non-vr lobby, version fix

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core.meta

@@ -0,0 +1,8 @@
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+folderAsset: yes
+DefaultImporter:
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+  userData: 
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioGen.cs

@@ -0,0 +1,193 @@
+using System;
+
+#if NETFX_CORE
+using Windows.UI.Xaml;
+using TimeObject = System.Object;
+#else
+using TimeObject = System.Timers.ElapsedEventArgs;
+#endif
+
+namespace Photon.Voice
+{
+    public static partial class AudioUtil
+    {
+        /// <summary>IAudioReader that provides a constant tone signal.</summary>
+        /// Because of current resampling algorithm, the tone is distorted if SamplingRate does not equal encoder sampling rate.
+        public class ToneAudioReader<T> : IAudioReader<T>
+        {
+            /// <summary>Create a new ToneAudioReader instance</summary>
+            /// <param name="clockSec">Function to get current time in seconds. In Unity, pass in '() => AudioSettings.dspTime' for better results.</param>
+            /// <param name="frequency">Frequency of the generated tone (in Hz).</param>
+            /// <param name="samplingRate">Sampling rate of the audio signal (in Hz).</param>
+            /// <param name="channels">Number of channels in the audio signal.</param>
+            public ToneAudioReader(Func<double> clockSec = null, double frequency = 440, int samplingRate = 48000, int channels = 2)
+            {                
+                this.clockSec = clockSec == null ? () => DateTime.Now.Ticks / 10000000.0 : clockSec;
+                this.samplingRate = samplingRate;
+                this.channels = channels;
+                k = 2 * Math.PI * frequency / SamplingRate;
+            }
+
+            /// <summary>Number of channels in the audio signal.</summary>
+            public int Channels { get { return channels; } }
+
+            /// <summary>Sampling rate of the audio signal (in Hz).</summary>
+            public int SamplingRate { get { return samplingRate; } }
+            /// <summary>If not null, audio object is in invalid state.</summary>
+            public string Error { get; private set; }
+            
+            public void Dispose()
+            {
+            }
+            double k;
+            long timeSamples;
+            Func<double> clockSec;
+            int samplingRate;
+            int channels;
+            public bool Read(T[] buf)
+            {
+                var bufSamples = buf.Length / Channels;
+                var t = (long)(clockSec() * SamplingRate);
+
+                var deltaTimeSamples = t - timeSamples;
+                if (Math.Abs(deltaTimeSamples) > SamplingRate / 4) // when started or Read has not been called for a while
+                {
+                    deltaTimeSamples = bufSamples;
+                    timeSamples = t - bufSamples;
+                }
+
+                if (deltaTimeSamples < bufSamples)
+                {
+                    return false;
+                }
+                else
+                {
+                    int x = 0;
+
+                    if (buf is float[])
+                    {
+                        for (int i = 0; i < bufSamples; i++)
+                        {
+                            var b = buf as float[];
+                            var v = (float)(System.Math.Sin(timeSamples++ * k) * 0.2f);
+                            for (int j = 0; j < Channels; j++)
+                                b[x++] = v;
+                        }
+                    }
+                    else if (buf is short[])
+                    {
+                        var b = buf as short[];
+                        for (int i = 0; i < bufSamples; i++)
+                        {
+                            var v = (short)(System.Math.Sin(timeSamples++ * k) * (0.2f * short.MaxValue));
+                            for (int j = 0; j < Channels; j++)
+                                b[x++] = v;
+                        }
+                    }
+                    return true;
+                }
+            }
+        }
+
+        /// <summary>IAudioPusher that provides a constant tone signal.</summary>
+        // Helpful for debug but does not compile for UWP because of System.Timers.Timer.
+        public class ToneAudioPusher<T> : IAudioPusher<T>
+        {
+            /// <summary>Create a new ToneAudioReader instance</summary>
+            /// <param name="frequency">Frequency of the generated tone (in Hz).</param>
+            /// <param name="bufSizeMs">Size of buffers to push (in milliseconds).</param>
+            /// <param name="samplingRate">Sampling rate of the audio signal (in Hz).</param>
+            /// <param name="channels">Number of channels in the audio signal.</param>
+            public ToneAudioPusher(int frequency = 440, int bufSizeMs = 100, int samplingRate = 48000, int channels = 2)
+            {
+                this.samplingRate = samplingRate;
+                this.channels = channels;
+                this.bufSizeSamples = bufSizeMs * SamplingRate / 1000;
+                k = 2 * Math.PI * frequency/ SamplingRate;                
+            }
+            double k;
+#if NETFX_CORE
+            DispatcherTimer timer;
+#else
+            System.Timers.Timer timer;
+#endif
+            Action<T[]> callback;
+            ObjectFactory<T[], int> bufferFactory;
+
+            /// <summary>Set the callback function used for pushing data</summary>
+            /// <param name="callback">Callback function to use</param>
+            /// <param name="bufferFactory">Buffer factory used to create the buffer that is pushed to the callback</param>
+            public void SetCallback(Action<T[]> callback, ObjectFactory<T[], int> bufferFactory)
+            {
+                if (timer != null)
+                {
+                    Dispose();
+                }
+
+                this.callback = callback;
+                this.bufferFactory = bufferFactory;
+                // Hook up the Elapsed event for the timer.
+#if NETFX_CORE
+                timer = new DispatcherTimer();
+                timer.Tick += OnTimedEvent;
+                timer.Interval = new TimeSpan(10000000 * bufSizeSamples / SamplingRate); // ticks (10 000 000 per sec) in single buffer
+#else
+                timer = new System.Timers.Timer(1000.0 * bufSizeSamples / SamplingRate);
+                timer.Elapsed += new System.Timers.ElapsedEventHandler(OnTimedEvent);
+                timer.Enabled = true;
+#endif
+            }
+
+            private void OnTimedEvent(object source, TimeObject e)
+            {
+                var buf = bufferFactory.New(bufSizeSamples * Channels);
+                int x = 0;                
+                if (buf is float[])
+                {
+                    var b = buf as float[];
+                    for (int i = 0; i < bufSizeSamples; i++)
+                    {
+                        var v = (float)(System.Math.Sin((posSamples + i) * k) / 2);
+                        for (int j = 0; j < Channels; j++)
+                            b[x++] = v;
+                    }
+                }
+                else if (buf is short[])
+                {
+                    var b = buf as short[];
+                    for (int i = 0; i < bufSizeSamples; i++)
+                    {
+                        var v = (short)(System.Math.Sin((posSamples + i) * k) * short.MaxValue / 2);
+                        for (int j = 0; j < Channels; j++)
+                            b[x++] = v;
+                    }
+                }
+
+                cntFrame++;
+                posSamples += bufSizeSamples;
+                this.callback(buf);
+            }
+            int cntFrame;
+            int posSamples;
+            int bufSizeSamples;
+            int samplingRate;
+            int channels;
+
+            public int Channels { get { return channels; } }
+            public int SamplingRate { get { return samplingRate; } }
+            public string Error { get; private set; }
+
+            public void Dispose()
+            {
+                if (timer != null)
+                {
+#if NETFX_CORE
+                    timer.Stop();
+#else
+                    timer.Close();
+#endif
+                }
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioGen.cs.meta

@@ -0,0 +1,11 @@
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioInEnumerator.cs

@@ -0,0 +1 @@
+// placeholder for deleted file

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioInEnumerator.cs.meta

@@ -0,0 +1,11 @@
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioOut.cs

@@ -0,0 +1,506 @@
+// To enable SoundTouch library tempo change for audio frame shrinking when catching up:
+// Define PHOTON_VOICE_SOUND_TOUCH_ENABLE
+// Set PlayDelayConfig.TempoChangeHQ to true
+// Add SoundTouch library https://gitlab.com/soundtouch/soundtouch
+//   Android: edit /Android-lib/jni/Android.mk:
+//      add ../../SoundTouchDLL/SoundTouchDLL.cpp to sources list
+//      add LOCAL_CFLAGS += -DDLL_EXPORTS
+//   Windows: http://soundtouch.surina.net/download.html
+// Add SoundTouch library C# wrapper https://gitlab.com/soundtouch/soundtouch/-/blob/master/source/csharp-example/SoundTouch.cs
+// Replace "SoundTouch.dll" with "soundtouch" in SoundTouch.cs
+
+using System.Collections.Generic;
+using System;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice
+{
+    public interface IAudioOut<T>
+    {
+        bool IsPlaying { get; }
+        void Start(int frequency, int channels, int frameSamplesPerChannel);
+        void Flush();
+        void Stop();
+        void Push(T[] frame);
+        void Service();
+        int Lag { get; } // ms
+    }
+
+    public class AudioOutDelayControl
+    {
+        public class PlayDelayConfig
+        {
+            public PlayDelayConfig()
+            {
+                Low = 200;
+                High = 400;
+                Max = 1000;
+                SpeedUpPerc = 5;
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+                TempoChangeHQ = false;
+#endif
+            }
+            public int Low { get  ; set; } // ms: (Target) Audio player initilizes the delay with this value on Start and after flush and moves to it during corrections
+            public int High { get; set; } // ms: Audio player tries to keep the delay below this value.
+            public int Max { get; set; } // ms: Audio player guarantees that the delay never exceeds this value.
+            public int SpeedUpPerc { get; set; } // playback speed-up to catch up the stream
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+            public bool TempoChangeHQ { get; set; } 
+#endif
+            public PlayDelayConfig Clone()
+            {
+                return new PlayDelayConfig
+                {
+                    Low = Low,
+                    High = High,
+                    Max = Max,
+                    SpeedUpPerc = SpeedUpPerc,
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+                    TempoChangeHQ = TempoChangeHQ,
+#endif
+                };
+            }
+        }
+    }
+
+    // Consumes audio frames via Push(), optionally resizes and writes (OutWrite) them to the output to keep constant delay
+    // between output playback position (OutPos) and input stream position (advanced with each write).
+    // Assumes output is always playing.
+    public abstract class AudioOutDelayControl<T> : AudioOutDelayControl, IAudioOut<T>
+    {
+        readonly int sizeofT = Marshal.SizeOf(default(T));
+
+        abstract public int OutPos { get; }
+        abstract public void OutCreate(int frequency, int channels, int bufferSamples);
+        abstract public void OutStart();
+        abstract public void OutWrite(T[] data, int offsetSamples);
+
+        const int TEMPO_UP_SKIP_GROUP = 6;
+
+        private int frameSamples;
+        private int frameSize;
+        protected int bufferSamples;
+        protected int frequency;
+
+        private int clipWriteSamplePos;
+
+        private int playSamplePosPrev;
+        private int sourceTimeSamplesPrev;
+        private int playLoopCount;
+
+        PlayDelayConfig playDelayConfig;
+        protected int channels;
+        private bool started;
+        private bool flushed = true;
+
+        private int targetDelaySamples;
+        private int upperTargetDelaySamples;       // correct if higher: gradually move to target via input frames resampling
+        private int maxDelaySamples;               // set delay to this value if delay is higher
+
+        private const int NO_PUSH_TIMEOUT_MS = 100; // should be greater than Push() call interval
+        int lastPushTime = Environment.TickCount - NO_PUSH_TIMEOUT_MS;
+
+        protected readonly ILogger logger;
+        protected readonly string logPrefix;
+        private readonly bool debugInfo;
+        readonly bool processInService = false; // enqueue frame in Push() in process it in Service(), otherwise process directly in Push()
+
+        T[] zeroFrame;
+        T[] resampledFrame;
+
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+        soundtouch.SoundTouch st;
+#endif
+        AudioUtil.TempoUp<T> tempoUp;
+        bool tempoChangeHQ; // true if library is available
+
+        public AudioOutDelayControl(bool processInService, PlayDelayConfig playDelayConfig, ILogger logger, string logPrefix, bool debugInfo)
+        {
+            this.processInService = processInService;
+			// make sure that settings are not mutable
+            this.playDelayConfig = playDelayConfig.Clone();
+            this.logger = logger;
+            this.logPrefix = logPrefix;
+            this.debugInfo = debugInfo;
+        }
+        public int Lag { get { return (int)((this.clipWriteSamplePos - (this.started ? (float)this.playLoopCount * this.bufferSamples + this.OutPos : 0.0f)) * 1000 / frequency); } }
+
+        public bool IsFlushed
+        {
+            get { return !started || this.flushed; }
+        }
+
+        public bool IsPlaying
+        {
+            get { return !IsFlushed && (Environment.TickCount - lastPushTime < NO_PUSH_TIMEOUT_MS); }
+        }
+
+        public void Start(int frequency, int channels, int frameSamples)
+        {
+            //frequency = (int)(frequency * 1.2); // underrun test
+            //frequency = (int)(frequency / 1.2); // overrun test
+
+            this.frequency = frequency;
+            this.channels = channels;
+            // add 1 frame samples to make sure that we have something to play when delay set to 0
+            this.targetDelaySamples = playDelayConfig.Low * frequency / 1000 + frameSamples;
+            this.upperTargetDelaySamples = playDelayConfig.High * frequency / 1000 + frameSamples;
+            if (this.upperTargetDelaySamples < targetDelaySamples + 2 * frameSamples)
+            {
+                this.upperTargetDelaySamples = targetDelaySamples + 2 * frameSamples;
+            }
+
+            int resampleRampEndMs = playDelayConfig.Max;
+
+            this.maxDelaySamples = playDelayConfig.Max * frequency / 1000;
+            if (this.maxDelaySamples < this.upperTargetDelaySamples)
+            {
+                this.maxDelaySamples = this.upperTargetDelaySamples;
+            }
+
+            this.bufferSamples = 3 * this.maxDelaySamples; // make sure we have enough space
+            this.frameSamples = frameSamples;
+            this.frameSize = frameSamples * channels;
+
+            this.clipWriteSamplePos = this.targetDelaySamples;
+
+            if (this.framePool.Info != this.frameSize)
+            {
+                this.framePool.Init(this.frameSize);
+            }
+
+            this.zeroFrame = new T[this.frameSize];
+            this.resampledFrame = new T[this.frameSize];
+
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE            
+            if (this.playDelayConfig.TempoChangeHQ)
+            {
+                try
+                {
+                    st = new soundtouch.SoundTouch();
+                    st.Channels = (uint)channels;
+                    st.SampleRate = (uint)frequency;
+                    tempoChangeHQ = true;
+                }
+                catch (DllNotFoundException e)
+                {
+                    logger.LogError("{0} SoundTouch library not found, disabling HQ tempo mode: {1}", this.logPrefix, e);
+                    tempoChangeHQ = false;                    
+                }
+            }
+#else
+            tempoChangeHQ = false;
+#endif
+            if (!tempoChangeHQ)
+            {
+                tempoUp = new AudioUtil.TempoUp<T>();
+            }
+
+            OutCreate(frequency, channels, bufferSamples);
+            OutStart();
+            this.started = true;
+            this.logger.LogInfo("{0} Start: {1} bs={2} ch={3} f={4} tds={5} utds={6} mds={7} speed={8} tempo={9}", this.logPrefix, sizeofT == 2 ? "short" : "float", bufferSamples, channels, frequency, targetDelaySamples, upperTargetDelaySamples, maxDelaySamples, playDelayConfig.SpeedUpPerc, tempoChangeHQ ? "HQ" : "LQ");
+        }
+
+        Queue<T[]> frameQueue = new Queue<T[]>();
+        public const int FRAME_POOL_CAPACITY = 50;
+        PrimitiveArrayPool<T> framePool = new PrimitiveArrayPool<T>(FRAME_POOL_CAPACITY, "AudioOutDelayControl");
+        bool catchingUp = false;
+
+        bool processFrame(T[] frame, int playSamplePos)
+        {
+            var lagSamples = this.clipWriteSamplePos - playSamplePos;
+            if (!this.flushed)
+            {
+                if (lagSamples > maxDelaySamples)
+                {
+                    if (this.debugInfo)
+                    {
+                        this.logger.LogDebug("{0} overrun {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                    }
+                    this.clipWriteSamplePos = playSamplePos + maxDelaySamples;
+                    lagSamples = maxDelaySamples;
+                }
+                else if (lagSamples < 0)
+                {
+                    if (this.debugInfo)
+                    {
+                        this.logger.LogDebug("{0} underrun {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                    }
+                    this.clipWriteSamplePos = playSamplePos + targetDelaySamples;
+                    lagSamples = targetDelaySamples;
+                }
+            }
+
+            if (frame == null) // flush signalled
+            {
+                this.flushed = true;
+                if (this.debugInfo)
+                {
+                    this.logger.LogDebug("{0} stream flush pause {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                }
+                if (catchingUp)
+                {
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+                    if (tempoChangeHQ)
+                    {
+                        st.Flush();
+                        writeTempoHQ();
+                    }
+#endif
+                    catchingUp = false;
+                    if (this.debugInfo)
+                    {
+                        this.logger.LogDebug("{0} stream sync reset {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                    }
+                }
+                return true;
+            }
+            else
+            {
+                if (this.flushed)
+                {
+                    this.clipWriteSamplePos = playSamplePos + targetDelaySamples;
+                    lagSamples = targetDelaySamples;
+                    this.flushed = false;
+                    if (this.debugInfo)
+                    {
+                        this.logger.LogDebug("{0} stream unpause {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                    }
+                }
+            }
+
+            // starting catching up
+            if (lagSamples > upperTargetDelaySamples && !catchingUp)
+            {
+                if (!tempoChangeHQ)
+                {
+                    tempoUp.Begin(channels, playDelayConfig.SpeedUpPerc, TEMPO_UP_SKIP_GROUP);
+                }
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+                else
+                {
+                    st.Clear();
+                    var tempo = (float)(100 + playDelayConfig.SpeedUpPerc) / 100;
+                    st.Tempo = tempo;
+                }
+#endif
+                catchingUp = true;
+                if (this.debugInfo)
+                {
+                    this.logger.LogDebug("{0} stream sync started {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                }
+            }
+
+            // finishing catching up
+            bool frameIsWritten = false; // first frame after switching from catching up requires special processing to flush TempoUp (the end of skipping wave removed if required)
+            if (lagSamples <= targetDelaySamples && catchingUp)
+            {
+                if (!tempoChangeHQ)
+                {
+                    int skipSamples = tempoUp.End(frame);
+                    int resampledLenSamples = frame.Length / channels - skipSamples;
+                    Buffer.BlockCopy(frame, skipSamples * channels * sizeofT, resampledFrame, 0, resampledLenSamples * channels * sizeofT);
+                    writeResampled(resampledFrame, resampledLenSamples);
+                    frameIsWritten = true;
+                }
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+                else
+                {
+                    st.Flush();
+                    writeTempoHQ();
+                    st.Clear();
+                }
+#endif
+                catchingUp = false;
+                if (this.debugInfo)
+                {
+                    this.logger.LogDebug("{0} stream sync finished {1} {2} {3} {4} {5}", this.logPrefix, upperTargetDelaySamples, lagSamples, playSamplePos, this.clipWriteSamplePos, playSamplePos + targetDelaySamples);
+                }
+            }
+
+            if (frameIsWritten)
+            {
+                return false;
+            }
+
+            if (catchingUp)
+            {
+                if (!tempoChangeHQ)
+                {
+                    int resampledLenSamples = tempoUp.Process(frame, resampledFrame);
+                    writeResampled(resampledFrame, resampledLenSamples);
+                }
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+                else
+                {
+                    if (sizeofT == 2)
+                    {
+                        st.PutSamplesI16(frame as short[], (uint)(frame.Length / channels));
+                    }
+                    else
+                    {
+                        st.PutSamples(frame as float[], (uint)(frame.Length / channels));
+                    }
+                    lagSamples -= writeTempoHQ();
+                }
+#endif
+            }
+            else
+            {
+                OutWrite(frame, this.clipWriteSamplePos % this.bufferSamples);
+                this.clipWriteSamplePos += frame.Length / this.channels;
+            }
+
+            return false;
+        }
+
+        // should be called in Update thread
+        public void Service()
+        {
+            if (this.started)
+            {
+                // cache PlayerPos
+                int sourceTimeSamples = OutPos;
+                // loop detection (pcmsetpositioncallback not called when clip loops)
+                if (sourceTimeSamples < sourceTimeSamplesPrev)
+                {
+                    playLoopCount++;
+                }
+                sourceTimeSamplesPrev = sourceTimeSamples;
+
+                var playSamplePos = this.playLoopCount * this.bufferSamples + sourceTimeSamples;
+
+                if (processInService)
+                {
+                    lock (this.frameQueue)
+                    {
+                        while (frameQueue.Count > 0)
+                        {
+                            var frame = frameQueue.Dequeue();
+
+                            if (processFrame(frame, playSamplePos))
+                            {
+                                return;  // flush signalled
+                            }
+
+                            framePool.Release(frame, frame.Length);
+                        }
+                    }
+                }
+
+                // clear played back buffer segment
+                var clearStart = this.playSamplePosPrev;
+                var clearMin = playSamplePos - this.bufferSamples;
+                if (clearStart < clearMin)
+                {
+                    clearStart = clearMin;
+                }
+                // round up
+                var framesToClear = (playSamplePos - clearStart - 1) / this.frameSamples + 1;
+                for (var offset = playSamplePos - framesToClear * this.frameSamples; offset < playSamplePos; offset += this.frameSamples)
+                {
+                    var o = offset % this.bufferSamples;
+                    if (o < 0) o += this.bufferSamples;
+                    OutWrite(this.zeroFrame, o);
+                }
+                this.playSamplePosPrev = playSamplePos;
+
+            }
+        }
+
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+        int writeTempoHQ()
+        {
+            int resampledLenSamples;
+            if (sizeofT == 2)
+            {
+                resampledLenSamples = (int)st.ReceiveSamplesI16(resampledFrame as short[], (uint)(resampledFrame.Length / channels));
+            }
+            else
+            {
+                resampledLenSamples = (int)st.ReceiveSamples(resampledFrame as float[], (uint)(resampledFrame.Length / channels));
+            }
+            return writeResampled(resampledFrame, resampledLenSamples);
+        }
+#endif
+
+        int writeResampled(T[] f, int resampledLenSamples)
+        {
+            // zero not used part of the buffer because SetData applies entire frame
+            // if this frame is the last, grabage may be played back
+            var tailSize = (f.Length - resampledLenSamples * channels) * sizeofT;
+            if (tailSize > 0) // it may be 0 what BlockCopy does not like
+            {
+                Buffer.BlockCopy(this.zeroFrame, 0, f, resampledLenSamples * channels * sizeofT, tailSize);
+            }
+
+            OutWrite(f, this.clipWriteSamplePos % this.bufferSamples);
+            this.clipWriteSamplePos += resampledLenSamples;
+            return resampledLenSamples;
+        }
+
+        // may be called on any thread
+        public void Push(T[] frame)
+        {
+            if (!this.started)
+            {
+                return;
+            }
+
+            if (frame.Length == 0)
+            {
+                return;
+            }
+
+            if (frame.Length != this.frameSize)
+            {
+                logger.LogError("{0} audio frames are not of size: {1} != {2}", this.logPrefix, frame.Length, this.frameSize);
+                return;
+            }
+
+            if (processInService)
+            {
+                T[] b = framePool.AcquireOrCreate();
+                Buffer.BlockCopy(frame, 0, b, 0, frame.Length * sizeofT);
+                lock (this.frameQueue)
+                {
+                    this.frameQueue.Enqueue(b);
+                }
+            }
+            else 
+            {
+                processFrame(frame, this.playLoopCount * this.bufferSamples + OutPos);
+            }
+
+            lastPushTime = Environment.TickCount;
+        }
+
+        public void Flush()
+        {
+            if (processInService)
+            {
+                lock (this.frameQueue)
+                {
+                    this.frameQueue.Enqueue(null);
+                }
+            }
+            else
+            {
+                processFrame(null, this.playLoopCount * this.bufferSamples + OutPos);
+            }
+        }
+
+        virtual public void Stop()
+        {
+#if PHOTON_VOICE_SOUND_TOUCH_ENABLE
+            if (st != null)
+            {
+                st.Dispose();
+                st = null;
+            }
+#endif
+            this.started = false;
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioOut.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioSyncBuffer.cs

@@ -0,0 +1,266 @@
+using System.Collections.Generic;
+
+namespace Photon.Voice
+{
+    // Keeps buffer size within given bounds (discards or repeats samples) even if numbers of pushed and read samples per second are different
+    public class AudioSyncBuffer<T> : IAudioOut<T>
+    {
+        private int curPlayingFrameSamplePos;
+
+        private int sampleRate;
+        private int channels;
+        private int frameSamples;
+        private int frameSize;
+        private bool started;
+
+        private int maxDevPlayDelaySamples;
+        private int targetPlayDelaySamples;
+
+        int playDelayMs;
+        private readonly ILogger logger;
+        private readonly string logPrefix;
+        private readonly bool debugInfo;
+
+        private readonly int elementSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(T));
+
+        private T[] emptyFrame;
+
+        public AudioSyncBuffer(int playDelayMs, ILogger logger, string logPrefix, bool debugInfo)
+        {
+            this.playDelayMs = playDelayMs;
+            this.logger = logger;
+            this.logPrefix = logPrefix;
+            this.debugInfo = debugInfo;
+        }
+        public int Lag 
+        { 
+            get 
+            {
+                lock (this)
+                {
+                    return (int)((float)this.frameQueue.Count * this.frameSamples * 1000 / sampleRate);
+                }
+            } 
+        }
+
+        public bool IsPlaying
+        {
+            get 
+            {
+                lock (this)
+                {
+                    return this.started;
+                }
+            }
+        }
+
+        // Can be called on runnig AudioSyncBuffer to reuse it for other parameters
+        public void Start(int sampleRate, int channels, int frameSamples)
+        {
+            lock (this)
+            {
+                this.started = false;
+
+                this.sampleRate = sampleRate;
+
+                // this.sampleRate = (int)(sampleRate * 1.2); // underrun test
+                // this.sampleRate = (int)(sampleRate / 1.2); // overrun test
+
+                this.channels = channels;
+                this.frameSamples = frameSamples;
+                this.frameSize = frameSamples * channels;
+
+                int playDelaySamples = playDelayMs * sampleRate / 1000 + frameSamples;
+                this.maxDevPlayDelaySamples = playDelaySamples / 2;
+                this.targetPlayDelaySamples = playDelaySamples + maxDevPlayDelaySamples;
+
+                if (this.framePool.Info != this.frameSize)
+                {
+                    this.framePool.Init(this.frameSize);
+                }
+
+                //frameQueue = new Queue<T[]>();
+                while (this.frameQueue.Count > 0)
+                {
+                    dequeueFrameQueue();
+                }
+
+                // it's important to change 'emptyFrame' value after frameQueue cleaned up, otherwise ' != this.emptyFrame' check in dequeueFrameQueue() will not work
+                this.emptyFrame = new T[this.frameSize];
+
+                // initial sync
+                int framesCnt = targetPlayDelaySamples / this.frameSamples;
+                this.curPlayingFrameSamplePos = targetPlayDelaySamples % this.frameSamples;
+                while (this.frameQueue.Count < framesCnt)
+                {
+                    this.frameQueue.Enqueue(emptyFrame);
+                }
+
+                this.started = true;
+            }
+        }
+
+        Queue<T[]> frameQueue = new Queue<T[]>();
+        public const int FRAME_POOL_CAPACITY = 50;
+        PrimitiveArrayPool<T> framePool = new PrimitiveArrayPool<T>(FRAME_POOL_CAPACITY, "AudioSyncBuffer");
+
+        public void Service()
+        {
+        }
+        
+        public void Read(T[] outBuf, int outChannels, int outSampleRate)
+        {
+            lock (this)
+            {
+                if (this.started)
+                {
+                    int outPos = 0;
+                    // enough data in remaining frames to fill entire out buffer
+                    // framesElemRem / this.sampleRate >= outElemRem / outSampleRate
+                    while ((this.frameQueue.Count * this.frameSamples - this.curPlayingFrameSamplePos) * this.channels * outSampleRate >= (outBuf.Length - outPos) * this.sampleRate) 
+                    {
+                        int playingFramePos = this.curPlayingFrameSamplePos * this.channels;
+                        var frame = frameQueue.Peek();
+                        int outElemRem = outBuf.Length - outPos;
+                        int frameElemRem = frame.Length - playingFramePos;
+
+                        // enough data in the current frame to fill entire out buffer and some will remain for the next call: keeping this frame
+                        // frameElemRem / (frCh * frRate) > outElemRem / (outCh * outRate)
+                        if (frameElemRem * outChannels * outSampleRate > outElemRem * this.channels * this.sampleRate)
+                        {
+                            // frame remainder is large enough to fill outBuf remainder, keep this frame and return
+                            //int framePosDelta = this.channels * outChannels * this.sampleRate / (outElemRem * outSampleRate);
+                            int framePosDelta = outElemRem * this.channels* this.sampleRate / (outChannels * outSampleRate);
+                            if (this.sampleRate == outSampleRate && this.channels == outChannels)
+                            {
+                                System.Buffer.BlockCopy(frame, playingFramePos * elementSize, outBuf, outPos * elementSize, outElemRem * elementSize);
+                            }
+                            else
+                            {
+                                AudioUtil.Resample(frame, playingFramePos, framePosDelta, this.channels, outBuf, outPos, outElemRem, outChannels);
+                            }
+                            this.curPlayingFrameSamplePos += framePosDelta / this.channels;
+
+                            return;
+                        }
+                        // discarding current frame because it fills exactly out buffer or next frame required to do so
+                        else
+                        {
+                            int outPosDelta = frameElemRem * outChannels * outSampleRate / (this.channels * this.sampleRate);
+                            if (this.sampleRate == outSampleRate && this.channels == outChannels)
+                            {
+                                System.Buffer.BlockCopy(frame, playingFramePos * elementSize, outBuf, outPos * elementSize, frameElemRem * elementSize);
+                            }
+                            else
+                            {
+                                AudioUtil.Resample(frame, playingFramePos, frameElemRem, this.channels, outBuf, outPos, outPosDelta, outChannels);
+                            }
+                            outPos += outPosDelta;
+
+                            this.curPlayingFrameSamplePos = 0;
+
+                            dequeueFrameQueue();
+
+                            if (outPosDelta == outElemRem)
+                            {
+                                return;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        // may be called on any thread
+        public void Push(T[] frame)
+        {
+            lock (this)
+            {
+                if (this.started)
+                {
+                    if (frame.Length == 0)
+                    {
+                        return;
+                    }
+
+                    if (frame.Length != this.frameSize)
+                    {
+                        logger.LogError("{0} AudioSyncBuffer audio frames are not of size: {1} != {2}", this.logPrefix, frame.Length, frameSize);
+                        return;
+                    }
+
+                    //TODO: call framePool.AcquireOrCreate(frame.Length) and test
+                    if (framePool.Info != frame.Length)
+                    {
+                        framePool.Init(frame.Length);
+                    }
+                    T[] b = framePool.AcquireOrCreate();
+                    System.Buffer.BlockCopy(frame, 0, b, 0, System.Buffer.ByteLength(frame));
+
+                    lock (this)
+                    {
+                        frameQueue.Enqueue(b);
+
+                        syncFrameQueue();
+                    }
+                }
+            }
+        }
+
+        public void Flush()
+        {
+        }
+
+        public void Stop()
+        {
+            lock (this)
+            {
+                this.started = false;
+            }
+        }
+
+        // call inside lock (this) { ... }
+        private void dequeueFrameQueue()
+        {
+            var f = this.frameQueue.Dequeue();
+            if (f != this.emptyFrame)
+            {
+                this.framePool.Release(f, f.Length);
+            }
+
+        }
+
+        // call inside lock (this) { ... }
+        private void syncFrameQueue()
+        {
+            var lagSamples = this.frameQueue.Count * this.frameSamples - this.curPlayingFrameSamplePos;
+            if (lagSamples > targetPlayDelaySamples + maxDevPlayDelaySamples)
+            {
+                int framesCnt = targetPlayDelaySamples / this.frameSamples;
+                this.curPlayingFrameSamplePos = targetPlayDelaySamples % this.frameSamples;
+                while (frameQueue.Count > framesCnt)
+                {
+                    dequeueFrameQueue();
+                }
+                if (this.debugInfo)
+                {
+                    this.logger.LogWarning("{0} AudioSynctBuffer overrun {1} {2} {3} {4}", this.logPrefix, targetPlayDelaySamples - maxDevPlayDelaySamples, targetPlayDelaySamples + maxDevPlayDelaySamples, lagSamples, framesCnt, this.curPlayingFrameSamplePos);
+                }
+            }
+            else if (lagSamples < targetPlayDelaySamples - maxDevPlayDelaySamples)
+            {
+                int framesCnt = targetPlayDelaySamples / this.frameSamples;
+                this.curPlayingFrameSamplePos = targetPlayDelaySamples % this.frameSamples;
+                while (frameQueue.Count < framesCnt)
+                {
+                    frameQueue.Enqueue(emptyFrame);
+                }
+
+                if (this.debugInfo)
+                {
+                    this.logger.LogWarning("{0} AudioSyncBuffer underrun {1} {2} {3} {4}", this.logPrefix, targetPlayDelaySamples - maxDevPlayDelaySamples, targetPlayDelaySamples + maxDevPlayDelaySamples, lagSamples, framesCnt, this.curPlayingFrameSamplePos);
+                }
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioSyncBuffer.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/AudioUtil.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Device.cs

@@ -0,0 +1,185 @@
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+#define DLL_IMPORT_INTERNAL
+#endif
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice
+{
+    public struct DeviceInfo
+    {
+        // used internally for Default property creation
+        private DeviceInfo(bool isDefault, int idInt, string idString, string name)
+        {
+            IsDefault = isDefault;
+            IDInt = idInt;
+            IDString = idString;
+            Name = name;
+            useStringID = false;
+        }
+
+        // numeric id
+        public DeviceInfo(int id, string name)
+        {
+            IsDefault = false;
+            IDInt = id;
+            IDString = "";
+            Name = name;
+            useStringID = false;
+        }
+
+        // string id
+        public DeviceInfo(string id, string name)
+        {
+            IsDefault = false;
+            IDInt = 0;
+            IDString = id;
+            Name = name;
+            useStringID = true;
+        }
+
+        // name is id (Unity Microphone and WebCamTexture APIs)
+        public DeviceInfo(string name)
+        {
+            IsDefault = false;
+            IDInt = 0;
+            IDString = name;
+            Name = name;
+            useStringID = true;
+        }
+
+        public bool IsDefault { get; private set; }
+        public int IDInt { get; private set; }
+        public string IDString { get; private set; }
+        public string Name { get; private set; }
+        private bool useStringID;
+
+        public static bool operator ==(DeviceInfo d1, DeviceInfo d2)
+        {
+            return d1.Equals(d2);
+        }
+        public static bool operator !=(DeviceInfo d1, DeviceInfo d2)
+        {
+            return !d1.Equals(d2);
+        }
+
+        // trivial implementation to avoid warnings CS0660 and CS0661 about missing overrides when == and != defined 
+        public override bool Equals(object obj)
+        {
+            return base.Equals(obj);
+        }
+        public override int GetHashCode()
+        {
+            return base.GetHashCode();
+        }
+
+        public override string ToString()
+        {
+            if (useStringID)
+            {
+                return (Name == null ? "" : Name) + (IDString == null || IDString == Name ? "" : " (" + IDString.Substring(0, Math.Min(10, IDString.Length)) + ")");
+            }
+            else
+            {
+                return string.Format("{0} ({1})", Name, IDInt);
+            }
+        }
+
+        // default device id may differ on different platform, use this platform value instead of Default.Int
+        public static readonly DeviceInfo Default = new DeviceInfo(true, -128, "", "[Default]");
+    }
+
+    public interface IDeviceEnumerator : IDisposable, IEnumerable<DeviceInfo>
+    {
+        bool IsSupported { get; }
+        void Refresh();
+        string Error { get; }
+    }
+
+    public abstract class DeviceEnumeratorBase : IDeviceEnumerator
+    {
+        protected List<DeviceInfo> devices = new List<DeviceInfo>();
+        protected ILogger logger;
+        public DeviceEnumeratorBase(ILogger logger)
+        {
+            this.logger = logger;
+        }
+        public virtual bool IsSupported => true;
+        public virtual string Error { get; protected set; }
+
+        public IEnumerator<DeviceInfo> GetEnumerator()
+        {
+            return devices.GetEnumerator();
+        }
+
+        public abstract void Refresh();
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return this.GetEnumerator();
+        }
+
+        public abstract void Dispose();
+    }
+
+    internal class DeviceEnumeratorNotSupported : DeviceEnumeratorBase
+    {
+        public override bool IsSupported => false;
+
+        string message;
+        public DeviceEnumeratorNotSupported(ILogger logger, string message) : base(logger)
+        {
+            this.message = message;
+        }
+
+        public override void Refresh()
+        {
+        }
+
+        public override string Error { get { return message; } }
+
+        public override void Dispose()
+        {
+        }
+    }
+
+    internal class AudioInEnumeratorNotSupported : DeviceEnumeratorNotSupported
+    {
+        public AudioInEnumeratorNotSupported(ILogger logger)
+            : base(logger, "Current platform is not supported by audio input DeviceEnumerator.")
+        {
+        }
+    }
+
+    internal class VideoInEnumeratorNotSupported : DeviceEnumeratorNotSupported
+    {
+        public VideoInEnumeratorNotSupported(ILogger logger)
+            : base(logger, "Current platform is not supported by video capture DeviceEnumerator.")
+        {
+        }
+    }
+
+    public interface IAudioInChangeNotifier : IDisposable
+    {
+        bool IsSupported { get; }
+        string Error { get; }
+    }
+
+    public class AudioInChangeNotifierNotSupported : IAudioInChangeNotifier
+    {
+        public bool IsSupported => false;
+
+        public AudioInChangeNotifierNotSupported(Action callback, ILogger logger)
+        {
+        }
+
+        public string Error { get { return "Current platform " + "is not supported by AudioInChangeNotifier."; } }
+
+        public void Dispose()
+        {
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Device.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/FrameBuffer.cs

@@ -0,0 +1,146 @@
+#define STATS
+using System;
+using System.Runtime.InteropServices;
+using System.Threading;
+
+namespace Photon.Voice
+{
+    // Encapsulates byte array slice, FrameFlags and dispose Action
+    public struct FrameBuffer
+    {
+        readonly byte[] array;
+        readonly int offset;
+        readonly int count;
+        readonly IDisposable disposer;
+        bool disposed;
+        int refCnt; // See Retain()
+
+        GCHandle gcHandle;
+        IntPtr ptr;
+        bool pinned;
+#if STATS
+        static internal int statDisposerCreated;
+        static internal int statDisposerDisposed;
+        static internal int statPinned;
+        static internal int statUnpinned;
+#else 
+        static internal int statDisposerCreated = Int32.MaxValue;
+        static internal int statDisposerDisposed = Int32.MaxValue;
+        static internal int statPinned = Int32.MaxValue;
+        static internal int statUnpinned = Int32.MaxValue;
+#endif
+        public FrameBuffer(byte[] array, int offset, int count, FrameFlags flags, IDisposable disposer)
+        {
+            this.array = array;
+            this.offset = offset;
+            this.count = count;
+            this.Flags = flags;
+            this.disposer = disposer;
+            this.disposed = false;
+            this.refCnt = 1;
+
+            this.gcHandle = new GCHandle();
+            this.ptr = IntPtr.Zero;
+            this.pinned = false;
+#if STATS
+            if (disposer != null)
+            {
+                Interlocked.Increment(ref statDisposerCreated);
+            }
+#endif
+        }
+
+        public FrameBuffer(byte[] array, FrameFlags flags)
+        {
+            this.array = array;
+            this.offset = 0;
+            this.count = array == null ? 0 : array.Length;
+            this.Flags = flags;
+            this.disposer = null;
+            this.disposed = false;
+            this.refCnt = 1;
+
+            this.gcHandle = new GCHandle();
+            this.ptr = IntPtr.Zero;
+            this.pinned = false;
+#if STATS
+            if (disposer != null) // false
+            {
+                Interlocked.Increment(ref statDisposerCreated);
+            }
+#endif
+        }
+
+        // Pins underlying buffer and returns the pointer to it with offset.
+        // Unpins in Dispose().
+        public IntPtr Ptr
+        {
+            get
+            {
+                if (!pinned)
+                {
+                    gcHandle = GCHandle.Alloc(array, GCHandleType.Pinned);
+                    ptr = IntPtr.Add(gcHandle.AddrOfPinnedObject(), offset);
+                    pinned = true;
+#if STATS
+                    Interlocked.Increment(ref statPinned);
+#endif
+                }
+                return ptr;
+            }
+        }
+
+        // Use Retain() to prevent the owner from disposing the buffer when it calls Release(). Since FrameBuffer is a struct, ref counter 
+        // is shared only between parameters in stack passed as ref, so ref counter is rather a flag, not a counter.
+        // To preserve the buffer for future use:
+        // void foo(ref FrameBuffer f1) {
+        //   this.f2 = f1; // don't call on copy!
+        //   f1.Retain()
+        // }
+        // in other thread or in subsequent call or when disposing the owner:
+        //   this.f2.release();
+        public void Retain()
+        {
+            refCnt++;
+        }
+
+        // Call on each owned FrameBuffer after processing:
+        // var f1 = new FrameBuffer()
+        // foo(f1)
+        // f1.Release()
+        public void Release()
+        {
+            refCnt--;
+            if (refCnt <= 0)
+            {
+                Dispose();
+            }
+        }
+
+        private void Dispose()
+        {
+            // not allocated if was created with FrameBuffer()
+            if (pinned)
+            {
+                gcHandle.Free();
+                pinned = false;
+#if STATS
+                Interlocked.Increment(ref statUnpinned);
+#endif
+            }
+            if (disposer != null && !disposed)
+            {
+                disposer.Dispose();
+                disposed = true;
+#if STATS
+                Interlocked.Increment(ref statDisposerDisposed);
+#endif
+            }
+        }
+
+        public byte[] Array { get { return array; } }
+        public int Length { get { return count; } }
+        public int Offset { get { return offset; } }
+        public FrameFlags Flags { get; }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/FrameBuffer.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/ObjectFactory.cs

@@ -0,0 +1,106 @@
+using System;
+
+namespace Photon.Voice
+{
+    /// <summary>
+    /// Uniform interface to <see cref="ObjectPool{TType, TInfo}"/> and single reusable object.
+    /// </summary>
+    /// <typeparam name="TType">Object type.</typeparam>
+    /// <typeparam name="TInfo">Type of property used to check 2 objects identity (like integral length of array).</typeparam>
+    public interface ObjectFactory<TType, TInfo> : IDisposable
+    {
+        TInfo Info { get; }
+        TType New();
+        TType New(TInfo info);
+        void Free(TType obj);
+        void Free(TType obj, TInfo info);
+    }
+
+    // Object factory implementation skipped, we use only arrays for now
+
+    /// <summary>
+    /// Array factory returnig the same array instance as long as it requested with the same array length. If length changes, new array instance created.
+    /// </summary>
+    /// <typeparam name="T">Array element type.</typeparam>
+    public class FactoryReusableArray<T> : ObjectFactory<T[], int>
+    {
+        T[] arr;
+        public FactoryReusableArray(int size)
+        {
+            this.arr = new T[size];
+        }
+
+        public int Info { get { return arr.Length; } }
+
+        public T[] New()
+        {
+            return arr;
+        }
+
+        public T[] New(int size)
+        {
+            if (arr.Length != size)
+            {
+                arr = new T[size];
+            }
+            return arr;
+        }
+
+        public void Free(T[] obj)
+        {
+        }
+
+        public void Free(T[] obj, int info)
+        {
+        }
+
+        public void Dispose()
+        {
+        }
+    }
+
+    /// <summary>
+    /// <see cref="PrimitiveArrayPool{T}"/> as wrapped in object factory interface.
+    /// </summary>
+    /// <typeparam name="T">Array element type.</typeparam>
+    public class FactoryPrimitiveArrayPool<T> : ObjectFactory<T[], int>
+    {
+        PrimitiveArrayPool<T> pool;
+        public FactoryPrimitiveArrayPool(int capacity, string name)
+        {
+            pool = new PrimitiveArrayPool<T>(capacity, name);
+        }
+
+        public FactoryPrimitiveArrayPool(int capacity, string name, int info)
+        {
+            pool = new PrimitiveArrayPool<T>(capacity, name, info);
+        }
+
+        public int Info { get { return pool.Info; } }
+
+        public T[] New()
+        {
+            return pool.AcquireOrCreate();
+        }
+
+        public T[] New(int size)
+        {
+            return pool.AcquireOrCreate(size);
+        }
+
+        public void Free(T[] obj)
+        {
+            pool.Release(obj);
+        }
+
+        public void Free(T[] obj, int info)
+        {
+            pool.Release(obj, info);
+        }
+
+        public void Dispose()
+        {
+            pool.Dispose();
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/ObjectFactory.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/ObjectPool.cs

@@ -0,0 +1,240 @@
+using System;
+
+namespace Photon.Voice
+{
+    /// <summary>
+    /// Generic Pool to re-use objects of a certain type (TType) that optionally match a certain property or set of properties (TInfo).
+    /// </summary>
+    /// <typeparam name="TType">Object type.</typeparam>
+    /// <typeparam name="TInfo">Type of parameter used to check 2 objects identity (like integral length of array).</typeparam>
+    public abstract class ObjectPool<TType, TInfo> : IDisposable
+    {
+        protected int capacity;
+        protected TInfo info;
+        private TType[] freeObj = new TType[0];
+        protected int pos;
+        protected string name;
+        private bool inited;
+        abstract protected TType createObject(TInfo info);
+        abstract protected void destroyObject(TType obj);
+        abstract protected bool infosMatch(TInfo i0, TInfo i1);
+        internal string LogPrefix { get { return "[ObjectPool] [" + name + "]"; } }
+
+        /// <summary>Create a new ObjectPool instance. Does not call Init().</summary>
+        /// <param name="capacity">Capacity (size) of the object pool.</param>
+        /// <param name="name">Name of the object pool.</param>
+        public ObjectPool(int capacity, string name)
+        {
+            this.capacity = capacity;
+            this.name = name;
+        }
+
+        /// <summary>Create a new ObjectPool instance with the given info structure. Calls Init().</summary>
+        /// <param name="capacity">Capacity (size) of the object pool.</param>
+        /// <param name="name">Name of the object pool.</param>
+        /// <param name="info">Info about this Pool's objects.</param>
+        public ObjectPool(int capacity, string name, TInfo info)
+        {
+            this.capacity = capacity;
+            this.name = name;
+            Init(info);
+        }
+
+        /// <summary>(Re-)Initializes this ObjectPool.</summary>
+        /// If there are objects available in this Pool, they will be destroyed.
+        /// Allocates (Capacity) new Objects.
+        /// <param name="info">Info about this Pool's objects.</param>
+        public void Init(TInfo info)
+        {
+            lock (this)
+            {
+                while (pos > 0)
+                {
+                    destroyObject(freeObj[--pos]);
+                }
+                this.info = info;
+                this.freeObj = new TType[capacity];
+                inited = true;
+            }
+        }
+
+        /// <summary>The property (info) that objects in this Pool must match.</summary>
+        public TInfo Info
+        {
+            get { return info; }
+        }
+
+        /// <summary>Acquire an existing object, or create a new one if none are available.</summary>
+        /// <remarks>If it fails to get one from the pool, this will create from the info given in this pool's constructor.</remarks>
+        public TType AcquireOrCreate()
+        {
+            lock (this)
+            {
+                if (pos > 0)
+                {
+                    return freeObj[--pos];
+                }
+                if (!inited)
+                {
+                    throw new Exception(LogPrefix + " not initialized");
+                }
+            }
+            return createObject(this.info);
+        }
+
+        /// <summary>Acquire an existing object (if info matches), or create a new one from the passed info.</summary>
+        /// <param name="info">Info structure to match, or create a new object with.</param>
+        public TType AcquireOrCreate(TInfo info)
+        {
+            // TODO: this.info thread safety
+            if (!infosMatch(this.info, info))
+            {
+                Init(info);
+            }
+            return AcquireOrCreate();
+        }
+
+        /// <summary>Returns object to pool.</summary>
+        /// <param name="obj">The object to return to the pool.</param>
+        /// <param name="objInfo">The info structure about obj.</param>
+        /// <remarks>obj is returned to the pool only if objInfo matches this pool's info. Else, it is destroyed.</remarks>
+        virtual public bool Release(TType obj, TInfo objInfo)
+        {
+            // TODO: this.info thread safety
+            if (infosMatch(this.info, objInfo))
+            {
+                lock (this)
+                {
+                    if (pos < freeObj.Length)
+                    {
+                        freeObj[pos++] = obj;
+                        return true;
+                    }
+                }
+            }
+
+            // destroy if can't reuse
+            //UnityEngine.Debug.Log(LogPrefix + " Release(Info) destroy");
+            destroyObject(obj);
+            // TODO: log warning
+            return false;
+        }
+
+        /// <summary>Returns object to pool, or destroys it if the pool is full.</summary>
+        /// <param name="obj">The object to return to the pool.</param>
+        virtual public bool Release(TType obj)
+        {
+            lock (this)
+            {
+                if (pos < freeObj.Length)
+                {
+                    freeObj[pos++] = obj;
+                    return true;
+                }
+            }
+
+            // destroy if can't reuse
+            //UnityEngine.Debug.Log(LogPrefix + " Release destroy " + pos);
+            destroyObject(obj);
+            // TODO: log warning
+            return false;
+        }
+
+        /// <summary>Free resources assoicated with this ObjectPool</summary>
+        public void Dispose()
+        {
+            lock (this)
+            {
+                while (pos > 0)
+                {
+                    destroyObject(freeObj[--pos]);
+                }
+                freeObj = new TType[0];
+            }
+        }
+    }
+
+    /// <summary>
+    /// Pool of Arrays with components of type T, with ObjectPool info being the array's size.
+    /// </summary>
+    /// <typeparam name="T">Array element type.</typeparam>
+    public class PrimitiveArrayPool<T> : ObjectPool<T[], int>
+    {
+        public PrimitiveArrayPool(int capacity, string name) : base(capacity, name) { }
+        public PrimitiveArrayPool(int capacity, string name, int info) : base(capacity, name, info) { }
+        protected override T[] createObject(int info)
+        {
+            //UnityEngine.Debug.Log(LogPrefix + " Create " + pos);
+            return new T[info];
+        }
+
+        protected override void destroyObject(T[] obj)
+        {
+            //UnityEngine.Debug.Log(LogPrefix + " Dispose " + pos + " " + obj.GetHashCode());
+        }
+
+        protected override bool infosMatch(int i0, int i1)
+        {
+            return i0 == i1;
+        }
+    }
+
+    public class ImageBufferNativePool<T> : ObjectPool<T, ImageBufferInfo> where T : ImageBufferNative
+    {
+        public delegate T Factory(ImageBufferNativePool<T> pool, ImageBufferInfo info);
+        Factory factory;
+        public ImageBufferNativePool(int capacity, Factory factory, string name) : base(capacity, name)
+        {
+            this.factory = factory;
+        }
+        public ImageBufferNativePool(int capacity, Factory factory, string name, ImageBufferInfo info) : base(capacity, name, info)
+        {
+            this.factory = factory;
+        }
+        protected override T createObject(ImageBufferInfo info)
+        {
+            //UnityEngine.Debug.Log(LogPrefix + " Create " + pos);
+            return factory(this, info);
+        }
+
+        protected override void destroyObject(T obj)
+        {
+            //UnityEngine.Debug.Log(LogPrefix + " Dispose " + pos + " " + obj.GetHashCode());
+            obj.Dispose();
+        }
+
+        // only height and stride compared, other parameters do not affect native buffers and can be simple overwritten
+        protected override bool infosMatch(ImageBufferInfo i0, ImageBufferInfo i1)
+        {
+            if (i0.Height != i1.Height)
+            {
+                return false;
+            }
+            var s0 = i0.Stride;
+            var s1 = i1.Stride;
+            if (s0.Length != s1.Length)
+            {
+                return false;
+            }
+            switch (i0.Stride.Length)
+            {
+                // most common case are 1 and 3 planes
+                case 1:
+                    return s0[0] == s1[0];
+                case 2:
+                    return s0[0] == s1[0] && s0[1] == s1[1];
+                case 3:
+                    return s0[0] == s1[0] && s0[1] == s1[1] && s0[2] == s1[2];
+                default:
+                    for (int i = 0; i < s0.Length; i++)
+                    {
+                        if (s0[i] != s1[i])
+                        {
+                            return false;
+                        }
+                    }
+                    return true;
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/ObjectPool.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/OpusCodec.cs

@@ -0,0 +1,269 @@
+using POpusCodec.Enums;
+using POpusCodec;
+using System;
+
+namespace Photon.Voice
+{
+    public class OpusCodec
+    {
+        static public string Version
+        {
+            get
+            {
+                return OpusLib.Version;
+            }
+        }
+
+        public enum FrameDuration
+        {
+            Frame2dot5ms = 2500,
+            Frame5ms = 5000,
+            Frame10ms = 10000,
+            Frame20ms = 20000,
+            Frame40ms = 40000,
+            Frame60ms = 60000
+        }
+
+        public static class Factory
+        {
+            static public IEncoder CreateEncoder<B>(VoiceInfo i, ILogger logger)
+            {
+                if (typeof(B) == typeof(float[]))
+                    return new EncoderFloat(i, logger);
+                else if (typeof(B) == typeof(short[]))
+                    return new EncoderShort(i, logger);
+                else
+                    throw new UnsupportedCodecException("Factory.CreateEncoder<" + typeof(B) + ">", i.Codec);
+            }
+        }
+
+        public static class DecoderFactory
+        {
+            public static IEncoder Create<T>(VoiceInfo i, ILogger logger)
+            {
+                var x = new T[1];
+                if (x[0].GetType() == typeof(float))
+                    return new EncoderFloat(i, logger);
+                else if (x[0].GetType() == typeof(short))
+                    return new EncoderShort(i, logger);
+                else
+                    throw new UnsupportedCodecException("EncoderFactory.Create<" + x[0].GetType() + ">", i.Codec);
+            }
+        }
+
+        abstract public class Encoder<T> : IEncoderDirect<T[]>
+        {
+            protected OpusEncoder encoder;
+            protected bool disposed;
+            protected Encoder(VoiceInfo i, ILogger logger)
+            {
+                try
+                {
+                    encoder = new OpusEncoder((SamplingRate)i.SamplingRate, (Channels)i.Channels, i.Bitrate, OpusApplicationType.Voip, (Delay)(i.FrameDurationUs * 2 / 1000));
+                    logger.LogInfo("[PV] OpusCodec.Encoder created. Opus version " + Version + ". Bitrate " + encoder.Bitrate + ". EncoderDelay " + encoder.EncoderDelay);
+                }
+                catch (Exception e)
+                {
+                    Error = e.ToString();
+                    if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                    {
+                        Error = "Exception in OpusCodec.Encoder constructor";
+                    }
+                    logger.LogError("[PV] OpusCodec.Encoder: " + Error);
+                }
+            }
+
+            public string Error { get; private set; }
+
+            public Action<ArraySegment<byte>, FrameFlags> Output { set; get; }
+
+            public void Input(T[] buf)
+            {
+                if (Error != null)
+                {
+                    return;
+                }
+                if (Output == null)
+                {
+                    Error = "OpusCodec.Encoder: Output action is not set";
+                    return;
+                }
+
+                lock (this)
+                {
+                    if (disposed || Error != null) { }
+                    else
+                    {
+                        var res = encodeTyped(buf);
+                        if (res.Count != 0)
+                        {
+                            Output(res, 0);
+                        }
+                    }
+                }
+            }
+
+            public void EndOfStream()
+            {
+                lock (this)
+                {
+                    if (disposed || Error != null) { }
+                    else
+                    {
+                        Output(EmptyBuffer, FrameFlags.EndOfStream);
+                    }
+                }
+                return;
+            }
+
+            private static readonly ArraySegment<byte> EmptyBuffer = new ArraySegment<byte>(new byte[] { });
+
+            public ArraySegment<byte> DequeueOutput(out FrameFlags flags) { flags = 0; return EmptyBuffer; }
+
+            protected abstract ArraySegment<byte> encodeTyped(T[] buf);
+
+            public I GetPlatformAPI<I>() where I : class
+            {
+                return null;
+            }
+
+            public void Dispose()
+            {
+                lock (this)
+                {
+                    if (encoder != null)
+                    {
+                        encoder.Dispose();
+                    }
+                    disposed = true;
+                }
+            }
+        }
+
+        public class EncoderFloat : Encoder<float>
+        {
+            internal EncoderFloat(VoiceInfo i, ILogger logger) : base(i, logger) { }
+
+            override protected ArraySegment<byte> encodeTyped(float[] buf)
+            {
+                return encoder.Encode(buf);
+            }
+        }
+        public class EncoderShort : Encoder<short>
+        {
+            internal EncoderShort(VoiceInfo i, ILogger logger) : base(i, logger) { }
+            override protected ArraySegment<byte> encodeTyped(short[] buf)
+            {
+                return encoder.Encode(buf);
+            }
+        }
+
+        public class Decoder<T> : IDecoder
+        {
+            protected OpusDecoder<T> decoder;
+            ILogger logger;
+            public Decoder(Action<FrameOut<T>> output, ILogger logger)
+            {
+                this.output = output;
+                this.logger = logger;
+            }
+
+            public void Open(VoiceInfo i)
+            {
+                try
+                {
+                    decoder = new OpusDecoder<T>((SamplingRate)i.SamplingRate, (Channels)i.Channels);
+                    logger.LogInfo("[PV] OpusCodec.Decoder created. Opus version " + Version);
+                }
+                catch (Exception e)
+                {
+                    Error = e.ToString();
+                    if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                    {
+                        Error = "Exception in OpusCodec.Decoder constructor";
+                    }
+                    logger.LogError("[PV] OpusCodec.Decoder: " + Error);
+                }
+            }
+
+            public string Error { get; private set; }
+
+            private Action<FrameOut<T>> output;
+
+            public void Dispose()
+            {
+                if (decoder != null)
+                {
+                    decoder.Dispose();
+                }
+            }
+
+            FrameOut<T> frameOut = new FrameOut<T>(null, false);
+            public void Input(ref FrameBuffer buf)
+            {
+                if (Error == null)
+                {
+                    bool endOfStream = (buf.Flags & FrameFlags.EndOfStream) != 0;
+                    if (endOfStream)
+                    {
+                        T[] res1 = null;
+                        T[] res2;
+                        // EndOfStream packet may have data
+                        // normally we do not send null with EndOfStream flag, but null is still valid here
+                        if (buf.Array == null && buf.Length > 0)
+                        {
+                            res1 = decoder.DecodePacket(ref buf);
+                        }
+                        // flush decoder
+                        res2 = decoder.DecodeEndOfStream();
+
+                        // if res1 is empty, res2 has correct (possible empty) buffer for EndOfStream frame
+                        if (res1 != null && res1.Length == 0)
+                        {
+                            // output cal per res required
+                            if (res2 != null && res2.Length != 0)
+                            {
+                                output(frameOut.Set(res1, false));
+                            }
+                            else                            
+                            {
+                                // swap results to reuse the code below
+                                res2 = res1;
+                            }
+                        }
+                        output(frameOut.Set(res2, true));
+                    }
+                    else
+                    {
+                        T[] res;
+                        res = decoder.DecodePacket(ref buf);
+                        if (res.Length != 0)
+                        {
+                            output(frameOut.Set(res, false));
+                        }
+                    }
+                    
+                }
+            }
+        }
+
+        public class Util
+        {
+            internal static int bestEncoderSampleRate(int f)
+            {
+                int diff = int.MaxValue;
+                int res = (int)SamplingRate.Sampling48000;
+                foreach (var x in Enum.GetValues(typeof(SamplingRate)))
+                {
+                    var d = Math.Abs((int)x - f);
+                    if (d < diff)
+                    {
+                        diff = d;
+                        res = (int)x;
+                    }
+                }
+                return res;
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/OpusCodec.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Bandwidth.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum Bandwidth : int
+    {
+        /// <summary>
+        /// Up to 4Khz
+        /// </summary>
+        Narrowband = 1101,
+        /// <summary>
+        /// Up to 6Khz
+        /// </summary>
+        Mediumband = 1102,
+        /// <summary>
+        /// Up to 8Khz
+        /// </summary>
+        Wideband = 1103,
+        /// <summary>
+        /// Up to 12Khz
+        /// </summary>
+        SuperWideband = 1104,
+        /// <summary>
+        /// Up to 20Khz (High Definition)
+        /// </summary>
+        Fullband = 1105
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Bandwidth.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Channels.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum Channels : int
+    {
+        /// <summary>
+        /// 1 Channel
+        /// </summary>
+        Mono = 1,
+        /// <summary>
+        /// 2 Channels
+        /// </summary>
+        Stereo = 2
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Channels.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Complexity.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum Complexity : int
+    {
+        Complexity0 = 0,
+        Complexity1 = 1,
+        Complexity2 = 2,
+        Complexity3 = 3,
+        Complexity4 = 4,
+        Complexity5 = 5,
+        Complexity6 = 6,
+        Complexity7 = 7,
+        Complexity8 = 8,
+        Complexity9 = 9,
+        Complexity10 = 10
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Complexity.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Delay.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    /// <summary>
+    /// Using a duration of less than 10 ms will prevent the encoder from using the LPC or hybrid modes. 
+    /// </summary>
+    public enum Delay
+    {
+        /// <summary>
+        /// 2.5ms
+        /// </summary>
+        Delay2dot5ms = 5,
+        /// <summary>
+        /// 5ms
+        /// </summary>
+        Delay5ms = 10,
+        /// <summary>
+        /// 10ms
+        /// </summary>
+        Delay10ms = 20,
+        /// <summary>
+        /// 20ms
+        /// </summary>
+        Delay20ms = 40,
+        /// <summary>
+        /// 40ms
+        /// </summary>
+        Delay40ms = 80,
+        /// <summary>
+        /// 60ms
+        /// </summary>
+        Delay60ms = 120
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/Delay.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/ForceChannels.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum ForceChannels : int
+    {
+        NoForce = -1000,
+        Mono = 1,
+        Stereo = 2
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/ForceChannels.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusApplicationType.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum OpusApplicationType : int
+    {
+        /// <summary>
+        /// Gives best quality at a given bitrate for voice signals.
+        /// It enhances the input signal by high-pass filtering and emphasizing formants and harmonics.
+        /// Optionally it includes in-band forward error correction to protect against packet loss.
+        /// Use this mode for typical VoIP applications.
+        /// Because of the enhancement, even at high bitrates the output may sound different from the input.
+        /// </summary>
+        Voip = 2048,
+        /// <summary>
+        /// Gives best quality at a given bitrate for most non-voice signals like music.
+        /// Use this mode for music and mixed (music/voice) content, broadcast, and applications requiring less than 15 ms of coding delay.
+        /// </summary>
+        Audio = 2049,
+        /// <summary>
+        /// Configures low-delay mode that disables the speech-optimized mode in exchange for slightly reduced delay.
+        /// </summary>
+        RestrictedLowDelay = 2051
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusApplicationType.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusCtlGetRequest.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    internal enum OpusCtlGetRequest : int
+    {
+        Application = 4001,
+        Bitrate = 4003,
+        MaxBandwidth = 4005,
+        VBR = 4007,
+        Bandwidth = 4009,
+        Complexity = 4011,
+        InbandFec = 4013,
+        PacketLossPercentage = 4015,
+        Dtx = 4017,
+        VBRConstraint = 4021,
+        ForceChannels = 4023,
+        Signal = 4025,
+        LookAhead = 4027,
+        SampleRate = 4029,
+        FinalRange = 4031,
+        Pitch = 4033,
+        Gain = 4035,
+        LsbDepth = 4037,
+        LastPacketDurationRequest = 4039
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusCtlGetRequest.cs.meta

@@ -0,0 +1,11 @@
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusCtlSetRequest.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    internal enum OpusCtlSetRequest : int
+    {
+        Application = 4000,
+        Bitrate = 4002,
+        MaxBandwidth = 4004,
+        VBR = 4006,
+        Bandwidth = 4008,
+        Complexity = 4010,
+        InbandFec = 4012,
+        PacketLossPercentage = 4014,
+        Dtx = 4016,
+        VBRConstraint = 4020,
+        ForceChannels = 4022,
+        Signal = 4024,
+        Gain = 4034,
+        LsbDepth = 4036
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusCtlSetRequest.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusStatusCode.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum OpusStatusCode : int
+    {
+        OK = 0,
+        BadArguments = -1,
+        BufferTooSmall = -2,
+        InternalError = -3,
+        InvalidPacket = -4,
+        Unimplemented = -5,
+        InvalidState = -6,
+        AllocFail = -7
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/OpusStatusCode.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/SamplingRate.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum SamplingRate : int
+    {
+        Sampling08000 = 8000,
+        Sampling12000 = 12000,
+        Sampling16000 = 16000,
+        Sampling24000 = 24000,
+        Sampling48000 = 48000
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/SamplingRate.cs.meta

@@ -0,0 +1,11 @@
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/SignalHint.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace POpusCodec.Enums
+{
+    public enum SignalHint : int
+    {
+        /// <summary>
+        /// (default) 
+        /// </summary>
+        Auto = -1000,
+        /// <summary>
+        /// Bias thresholds towards choosing LPC or Hybrid modes
+        /// </summary>
+        Voice = 3001,
+        /// <summary>
+        /// Bias thresholds towards choosing MDCT modes. 
+        /// </summary>
+        Music = 3002
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/Enums/SignalHint.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusDecoder.cs

@@ -0,0 +1,220 @@
+using System;
+using POpusCodec.Enums;
+using System.Runtime.InteropServices;
+using Photon.Voice;
+
+namespace POpusCodec
+{
+    public class OpusDecoder<T> : IDisposable
+    {
+        private const bool UseInbandFEC = true;
+
+        private bool TisFloat;
+        private int sizeofT;
+        
+        private IntPtr _handle = IntPtr.Zero;
+        private const int MaxFrameSize = 5760;
+
+        private int _channelCount;
+
+        private static readonly T[] EmptyBuffer = new T[] { };
+
+        private Bandwidth? _previousPacketBandwidth = null;
+
+        public Bandwidth? PreviousPacketBandwidth
+        {
+            get
+            {
+                return _previousPacketBandwidth;
+            }
+        }
+
+        public OpusDecoder(SamplingRate outputSamplingRateHz, Channels numChannels)
+        {
+            TisFloat = default(T) is float;
+            sizeofT = Marshal.SizeOf(default(T));
+
+            if ((outputSamplingRateHz != SamplingRate.Sampling08000)
+                && (outputSamplingRateHz != SamplingRate.Sampling12000)
+                && (outputSamplingRateHz != SamplingRate.Sampling16000)
+                && (outputSamplingRateHz != SamplingRate.Sampling24000)
+                && (outputSamplingRateHz != SamplingRate.Sampling48000))
+            {
+                throw new ArgumentOutOfRangeException("outputSamplingRateHz", "Must use one of the pre-defined sampling rates (" + outputSamplingRateHz + ")");
+            }
+            if ((numChannels != Channels.Mono)
+                && (numChannels != Channels.Stereo))
+            {
+                throw new ArgumentOutOfRangeException("numChannels", "Must be Mono or Stereo");
+            }
+
+            _channelCount = (int)numChannels;
+            _handle = Wrapper.opus_decoder_create(outputSamplingRateHz, numChannels);
+
+            if (_handle == IntPtr.Zero)
+            {
+                throw new OpusException(OpusStatusCode.AllocFail, "Memory was not allocated for the encoder");
+            }
+        }
+        
+        private T[] buffer; // allocated for exactly 1 frame size as first valid frame received
+        private FrameBuffer prevPacketData;
+        bool prevPacketInvalid; // maybe false if prevPacket us null
+
+        // pass null to indicate packet loss
+        public T[] DecodePacket(ref FrameBuffer packetData)
+        {
+            if (this.buffer == null && packetData.Array == null)
+            {
+                return EmptyBuffer;
+            }
+            
+            int numSamplesDecoded = 0;
+
+            if (this.buffer == null)
+            {
+                // on the first call we don't know frame size, use temporal buffer of maximal length
+                this.buffer = new T[MaxFrameSize * _channelCount];                
+            }
+
+            bool packetInvalid;
+            if (packetData.Array == null)
+            {
+                packetInvalid = true;
+            }
+            else
+            {
+                int bandwidth = Wrapper.opus_packet_get_bandwidth(packetData.Ptr);
+                packetInvalid = bandwidth == (int)OpusStatusCode.InvalidPacket;
+            }
+
+            bool regularDecode = false;
+            if (UseInbandFEC)
+            {
+                if (prevPacketInvalid)
+                {
+                    if (packetInvalid)
+                    {
+                        // no fec data, conceal previous frame
+                        numSamplesDecoded = TisFloat ?
+                            Wrapper.opus_decode(_handle, new FrameBuffer(), this.buffer as float[], 0, _channelCount) :
+                            Wrapper.opus_decode(_handle, new FrameBuffer(), this.buffer as short[], 0, _channelCount);
+                        //UnityEngine.Debug.Log("======================= Conceal");
+                    }
+                    else
+                    {
+                        // error correct previous frame with the help of the current
+                        numSamplesDecoded = TisFloat ?
+                            Wrapper.opus_decode(_handle, packetData, this.buffer as float[], 1, _channelCount) :
+                            Wrapper.opus_decode(_handle, packetData, this.buffer as short[], 1, _channelCount);
+                        //UnityEngine.Debug.Log("======================= FEC");
+                    }
+                }
+                else
+                {
+                    // decode previous frame
+                    if (prevPacketData.Array != null) // is null on 1st call
+                    {
+                        numSamplesDecoded = TisFloat ?
+                            Wrapper.opus_decode(_handle, prevPacketData, this.buffer as float[], 0, _channelCount) :
+                            Wrapper.opus_decode(_handle, prevPacketData, this.buffer as short[], 0, _channelCount);                        
+                        // prevPacketData is disposed below before copying packetData to it
+                        regularDecode = true;
+                    }
+                }
+
+                prevPacketData.Release();
+                prevPacketData = packetData;
+                packetData.Retain();
+                prevPacketInvalid = packetInvalid;
+            }
+            else
+            {
+                #pragma warning disable 162
+                // decode or conceal current frame
+                numSamplesDecoded = TisFloat ?
+                    Wrapper.opus_decode(_handle, packetData, this.buffer as float[], 0, _channelCount) :
+                    Wrapper.opus_decode(_handle, packetData, this.buffer as short[], 0, _channelCount);
+                regularDecode = true;
+                #pragma warning restore 162
+            }
+
+            if (numSamplesDecoded == 0)
+                return EmptyBuffer;
+            
+            if (this.buffer.Length != numSamplesDecoded * _channelCount)
+            {
+                if (!regularDecode)
+                {
+                    // wait for regular valid frame to imitialize the size
+                    return EmptyBuffer;
+                }
+                // now that we know the frame size, allocate the buffer and copy data from temporal buffer
+                var tmp = this.buffer;
+                this.buffer = new T[numSamplesDecoded * _channelCount];
+                Buffer.BlockCopy(tmp, 0, this.buffer, 0, numSamplesDecoded * sizeofT);
+            }
+            return this.buffer;
+        }
+
+        public T[] DecodeEndOfStream()
+        {
+            int numSamplesDecoded = 0;
+            if (UseInbandFEC && !prevPacketInvalid)
+            {
+                // follow the same buffer initializatiopn pattern as in DecodeFrame() though buffer is already initialized most likely
+                if (this.buffer == null)
+                {
+                    // on the first call we don't know frame size, use temporal buffer of maximal length
+                    this.buffer = new T[MaxFrameSize * _channelCount];
+                }
+
+                // decode previous frame
+                if (prevPacketData.Array != null) // is null on 1st call
+                {
+                    numSamplesDecoded = TisFloat ?
+                    Wrapper.opus_decode(_handle, prevPacketData, this.buffer as float[], 1, _channelCount) :
+                    Wrapper.opus_decode(_handle, prevPacketData, this.buffer as short[], 1, _channelCount);
+                }
+                prevPacketData.Release();
+                prevPacketData = new FrameBuffer();
+                prevPacketInvalid = false;
+
+                if (numSamplesDecoded == 0)
+                {
+                    return EmptyBuffer;
+                }
+                else
+                {
+                    // follow the same buffer initializatiopn pattern as in DecodeFrame() 
+                    if (this.buffer.Length != numSamplesDecoded * _channelCount)
+                    {
+                        // now that we know the frame size, allocate the buffer and copy data from temporal buffer
+                        var tmp = this.buffer;
+                        this.buffer = new T[numSamplesDecoded * _channelCount];
+                        Buffer.BlockCopy(tmp, 0, this.buffer, 0, numSamplesDecoded * sizeofT);
+                    }
+
+                    return this.buffer;
+                }
+            }
+            else
+            {
+                prevPacketData.Release();
+                prevPacketData = new FrameBuffer();
+                prevPacketInvalid = false;
+                return EmptyBuffer;
+            }
+        }
+
+        public void Dispose()
+        {
+            prevPacketData.Release();
+            if (_handle != IntPtr.Zero)
+            {
+                Wrapper.opus_decoder_destroy(_handle);
+                _handle = IntPtr.Zero;
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusDecoder.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusEncoder.cs

@@ -0,0 +1,283 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using POpusCodec.Enums;
+using System.Runtime.InteropServices;
+
+namespace POpusCodec
+{
+    static public class OpusLib
+    {
+        static public string Version
+        {
+            get
+            {
+                return Marshal.PtrToStringAnsi(Wrapper.opus_get_version_string());
+            }
+        }
+    }
+
+    public class OpusEncoder : IDisposable
+    {
+        public const int BitrateMax = -1;
+
+        private IntPtr _handle = IntPtr.Zero;
+        private const int RecommendedMaxPacketSize = 4000;
+        private int _frameSizePerChannel = 960;
+        private SamplingRate _inputSamplingRate = SamplingRate.Sampling48000;
+        private Channels _inputChannels = Channels.Stereo;
+        
+        public SamplingRate InputSamplingRate
+        {
+            get
+            {
+                return _inputSamplingRate;
+            }
+        }
+
+        public Channels InputChannels
+        {
+            get
+            {
+                return _inputChannels;
+            }
+        }
+
+
+        private readonly byte[] writePacket = new byte[RecommendedMaxPacketSize];
+        private static readonly ArraySegment<byte> EmptyBuffer = new ArraySegment<byte>(new byte[] { });
+
+        private Delay _encoderDelay = Delay.Delay20ms;
+
+        /// <summary>
+        /// Using a duration of less than 10 ms will prevent the encoder from using the LPC or hybrid modes. 
+        /// </summary>
+        public Delay EncoderDelay
+        {
+            set
+            {
+                _encoderDelay = value;
+                _frameSizePerChannel = (int)((((int)_inputSamplingRate) / 1000) * ((decimal)_encoderDelay) / 2);
+            }
+            get
+            {
+                return _encoderDelay;
+            }
+        }
+
+        public int FrameSizePerChannel
+        {
+            get
+            {
+                return _frameSizePerChannel;
+            }
+        }
+
+        public int Bitrate
+        {
+            get
+            {
+                return Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.Bitrate);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.Bitrate, value);
+            }
+        }
+
+        public Bandwidth MaxBandwidth
+        {
+            get
+            {
+                return (Bandwidth)Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.MaxBandwidth);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.MaxBandwidth, (int)value);
+            }
+        }
+
+        public Complexity Complexity
+        {
+            get
+            {
+                return (Complexity)Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.Complexity);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.Complexity, (int)value);
+            }
+        }
+
+        public int ExpectedPacketLossPercentage
+        {
+            get
+            {
+                return Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.PacketLossPercentage);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.PacketLossPercentage, value);
+            }
+        }
+
+        public SignalHint SignalHint
+        {
+            get
+            {
+                return (SignalHint)Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.Signal);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.Signal, (int)value);
+            }
+        }
+
+        public ForceChannels ForceChannels
+        {
+            get
+            {
+                return (ForceChannels)Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.ForceChannels);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.ForceChannels, (int)value);
+            }
+        }
+
+        public bool UseInbandFEC
+        {
+            get
+            {
+                return Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.InbandFec) == 1;
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.InbandFec, value ? 1 : 0);
+            }
+        }
+
+        public int PacketLossPercentage
+        {
+            get
+            {
+                return Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.PacketLossPercentage);
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.PacketLossPercentage, value);
+            }
+        }
+
+        public bool UseUnconstrainedVBR
+        {
+            get
+            {
+                return Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.VBRConstraint) == 0;
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.VBRConstraint, value ? 0 : 1);
+            }
+        }
+
+        public bool DtxEnabled
+        {
+            get
+            {
+                return Wrapper.get_opus_encoder_ctl(_handle, OpusCtlGetRequest.Dtx) == 1;
+            }
+            set
+            {
+                Wrapper.set_opus_encoder_ctl(_handle, OpusCtlSetRequest.Dtx, value ? 1 : 0);
+            }
+        }
+
+        //public OpusEncoder(SamplingRate inputSamplingRateHz, Channels numChannels)
+        //    : this(inputSamplingRateHz, numChannels,  120000, OpusApplicationType.Audio, Delay.Delay20ms)
+        //{ }
+
+        //public OpusEncoder(SamplingRate inputSamplingRateHz, Channels numChannels, int bitrate)
+        //    : this(inputSamplingRateHz, numChannels, bitrate, OpusApplicationType.Audio, Delay.Delay20ms)
+        //{ }
+
+        //public OpusEncoder(SamplingRate inputSamplingRateHz, Channels numChannels, int bitrate, OpusApplicationType applicationType)
+        //    : this(inputSamplingRateHz, numChannels, bitrate, applicationType, Delay.Delay20ms)
+        //{ }
+
+        public OpusEncoder(SamplingRate inputSamplingRateHz, Channels numChannels, int bitrate, OpusApplicationType applicationType, Delay encoderDelay)
+        {
+            if ((inputSamplingRateHz != SamplingRate.Sampling08000)
+                && (inputSamplingRateHz != SamplingRate.Sampling12000)
+                && (inputSamplingRateHz != SamplingRate.Sampling16000)
+                && (inputSamplingRateHz != SamplingRate.Sampling24000)
+                && (inputSamplingRateHz != SamplingRate.Sampling48000))
+            {
+                throw new ArgumentOutOfRangeException("inputSamplingRateHz", "Must use one of the pre-defined sampling rates(" + inputSamplingRateHz + ")");
+            }
+            if ((numChannels != Channels.Mono)
+                && (numChannels != Channels.Stereo))
+            {
+                throw new ArgumentOutOfRangeException("numChannels", "Must be Mono or Stereo");
+            }
+            if ((applicationType != OpusApplicationType.Audio)
+                && (applicationType != OpusApplicationType.RestrictedLowDelay)
+                && (applicationType != OpusApplicationType.Voip))
+            {
+                throw new ArgumentOutOfRangeException("applicationType", "Must use one of the pre-defined application types (" + applicationType + ")");
+            }
+            if ((encoderDelay != Delay.Delay10ms)
+                && (encoderDelay != Delay.Delay20ms)
+                && (encoderDelay != Delay.Delay2dot5ms)
+                && (encoderDelay != Delay.Delay40ms)
+                && (encoderDelay != Delay.Delay5ms)
+                && (encoderDelay != Delay.Delay60ms))
+            {
+                throw new ArgumentOutOfRangeException("encoderDelay", "Must use one of the pre-defined delay values (" + encoderDelay + ")"); ;
+            }
+
+            _inputSamplingRate = inputSamplingRateHz;
+            _inputChannels = numChannels;
+            _handle = Wrapper.opus_encoder_create(inputSamplingRateHz, numChannels, applicationType);
+
+            if (_handle == IntPtr.Zero)
+            {
+                throw new OpusException(OpusStatusCode.AllocFail, "Memory was not allocated for the encoder");
+            }
+
+            EncoderDelay = encoderDelay;
+            Bitrate = bitrate;
+            UseInbandFEC = true;
+            PacketLossPercentage = 30;
+        }
+
+        public ArraySegment<byte> Encode(float[] pcmSamples)
+        {
+            int size = Wrapper.opus_encode(_handle, pcmSamples, _frameSizePerChannel, writePacket);
+
+            if (size <= 1) //DTX. Negative already handled at this point
+                return EmptyBuffer;
+            else
+                return new ArraySegment<byte>(writePacket, 0, size);
+        }
+
+        public ArraySegment<byte> Encode(short[] pcmSamples)
+        {
+            int size = Wrapper.opus_encode(_handle, pcmSamples, _frameSizePerChannel, writePacket);
+            if (size <= 1) //DTX. Negative already handled at this point
+                return EmptyBuffer;
+            else
+                return new ArraySegment<byte>(writePacket, 0, size);
+        }
+
+        public void Dispose()
+        {
+            if (_handle != IntPtr.Zero)
+            {
+                Wrapper.opus_encoder_destroy(_handle);
+                _handle = IntPtr.Zero;
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusEncoder.cs.meta

@@ -0,0 +1,11 @@
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+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusException.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using POpusCodec.Enums;
+
+namespace POpusCodec
+{
+    public class OpusException : Exception
+    {
+        private OpusStatusCode _statusCode = OpusStatusCode.OK;
+
+        public OpusStatusCode StatusCode
+        {
+            get
+            {
+                return _statusCode;
+            }
+        }
+
+        public OpusException(OpusStatusCode statusCode, string message)
+            : base(message + " (" + statusCode + ")")
+        {
+            _statusCode = statusCode;
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusException.cs.meta

@@ -0,0 +1,11 @@
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusWrapper.cs

@@ -0,0 +1,298 @@
+#if ((UNITY_IOS || UNITY_SWITCH) && !UNITY_EDITOR) || __IOS__
+#define DLL_IMPORT_INTERNAL
+#endif
+
+#if NONE //UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN || UNITY_WSA
+// opus.* lib built from original opus repo 
+#else
+#define OPUS_EGPV // opus_egpv.* lib with interop helpers (we still may use such libs for the platforms where helpers are not required)
+#endif
+
+// Interop helpers required for iOS ARM64 IL2CPP (and maybe in other cases) because of variadic functions PInvoke calling issue:
+// https://stackoverflow.com/questions/35536515/variable-argument-function-bad-access-with-va-arg-at-ios-arm64
+
+// use statically linked interop helpers defined outside of opus.lib
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+#define OPUS_EGPV_INTEROP_HELPER_EXTERNAL
+#endif
+
+// Interop helpers required also for Apple Silicon (ARM64)
+
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+// use interop helpers built into opus_egpv.* lib (works for any platform but requires opus lib compiled from customized sources)
+#define OPUS_EGPV_INTEROP_HELPER_BUILTIN
+#define OPUS_EGPV
+#endif
+
+#if UNITY_WEBGL && !UNITY_EDITOR
+#define DLL_IMPORT_INTERNAL
+#define OPUS_EGPV_INTEROP_HELPER_BUILTIN
+#endif
+
+using System;
+using System.Runtime.InteropServices;
+using POpusCodec.Enums;
+using Photon.Voice;
+
+namespace POpusCodec
+{
+    internal class Wrapper
+    {
+#if DLL_IMPORT_INTERNAL
+        const string lib_name = "__Internal";
+#else
+#if OPUS_EGPV
+        const string lib_name = "opus_egpv";
+#else
+        const string lib_name = "opus";
+#endif
+#endif
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern int opus_encoder_get_size(Channels channels);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern OpusStatusCode opus_encoder_init(IntPtr st, SamplingRate Fs, Channels channels, OpusApplicationType application);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern IntPtr opus_get_version_string();
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern int opus_encode(IntPtr st, short[] pcm, int frame_size, byte[] data, int max_data_bytes);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern int opus_encode_float(IntPtr st, float[] pcm, int frame_size, byte[] data, int max_data_bytes);
+
+#if OPUS_EGPV_INTEROP_HELPER_BUILTIN
+        const string ctl_entry_point_set = "_set";
+        const string ctl_entry_point_get = "_get";
+#elif OPUS_EGPV_INTEROP_HELPER_EXTERNAL
+        const string ctl_entry_point_set = "_set_ext";
+        const string ctl_entry_point_get = "_get_ext";
+#else
+        const string ctl_entry_point_set = "";
+        const string ctl_entry_point_get = "";
+#endif
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "opus_encoder_ctl" + ctl_entry_point_set)]
+        private static extern int opus_encoder_ctl_set(IntPtr st, OpusCtlSetRequest request, int value);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "opus_encoder_ctl" + ctl_entry_point_get)]
+        private static extern int opus_encoder_ctl_get(IntPtr st, OpusCtlGetRequest request, ref int value);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "opus_decoder_ctl" + ctl_entry_point_set)]
+        private static extern int opus_decoder_ctl_set(IntPtr st, OpusCtlSetRequest request, int value);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "opus_decoder_ctl" + ctl_entry_point_get)]
+        private static extern int opus_decoder_ctl_get(IntPtr st, OpusCtlGetRequest request, ref int value);
+
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern int opus_decoder_get_size(Channels channels);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern OpusStatusCode opus_decoder_init(IntPtr st, SamplingRate Fs, Channels channels);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern int opus_decode(IntPtr st, IntPtr data, int len, short[] pcm, int frame_size, int decode_fec);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern int opus_decode_float(IntPtr st, IntPtr data, int len, float[] pcm, int frame_size, int decode_fec);
+
+        //        [DllImport(import_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        //        private static extern int opus_decode(IntPtr st, IntPtr data, int len, short[] pcm, int frame_size, int decode_fec);
+
+        //        [DllImport(import_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        //        private static extern int opus_decode_float(IntPtr st, IntPtr data, int len, float[] pcm, int frame_size, int decode_fec);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern int opus_packet_get_bandwidth(IntPtr data);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern int opus_packet_get_nb_channels(byte[] data);
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        private static extern IntPtr opus_strerror(OpusStatusCode error);
+
+
+        public static IntPtr opus_encoder_create(SamplingRate Fs, Channels channels, OpusApplicationType application)
+        {
+            int size = Wrapper.opus_encoder_get_size(channels);
+            IntPtr ptr = Marshal.AllocHGlobal(size);
+
+            OpusStatusCode statusCode = Wrapper.opus_encoder_init(ptr, Fs, channels, application);
+
+            try
+            {
+                HandleStatusCode(statusCode, "opus_encoder_create/opus_encoder_init", Fs, channels, application);
+            }
+            catch (Exception ex)
+            {
+                if (ptr != IntPtr.Zero)
+                {
+                    Wrapper.opus_encoder_destroy(ptr);
+                    ptr = IntPtr.Zero;
+                }
+
+                throw ex;
+            }
+
+            return ptr;
+        }
+
+
+        public static int opus_encode(IntPtr st, short[] pcm, int frame_size, byte[] data)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusEncoder");
+
+            int payloadLength = opus_encode(st, pcm, frame_size, data, data.Length);
+
+            if (payloadLength <= 0)
+            {
+                HandleStatusCode((OpusStatusCode)payloadLength, "opus_encode/short", frame_size, data.Length);
+            }
+
+            return payloadLength;
+        }
+
+        public static int opus_encode(IntPtr st, float[] pcm, int frame_size, byte[] data)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusEncoder");
+
+            int payloadLength = opus_encode_float(st, pcm, frame_size, data, data.Length);
+
+            if (payloadLength <= 0)
+            {
+                HandleStatusCode((OpusStatusCode)payloadLength, "opus_encode/float", frame_size, data.Length);
+            }
+
+            return payloadLength;
+        }
+
+        public static void opus_encoder_destroy(IntPtr st)
+        {
+            Marshal.FreeHGlobal(st);
+        }
+
+        public static int get_opus_encoder_ctl(IntPtr st, OpusCtlGetRequest request)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusEncoder");
+
+            int value = 0;
+            OpusStatusCode statusCode = (OpusStatusCode)opus_encoder_ctl_get(st, request, ref value);
+
+            HandleStatusCode(statusCode, "opus_encoder_ctl_get", request);
+
+            return value;
+        }
+
+        public static void set_opus_encoder_ctl(IntPtr st, OpusCtlSetRequest request, int value)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusEncoder");
+
+            OpusStatusCode statusCode = (OpusStatusCode)opus_encoder_ctl_set(st, request, value);
+
+            HandleStatusCode(statusCode, "opus_encoder_ctl_set", request, value);
+        }
+
+        public static int get_opus_decoder_ctl(IntPtr st, OpusCtlGetRequest request)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusDcoder");
+
+            int value = 0;
+            OpusStatusCode statusCode = (OpusStatusCode)opus_decoder_ctl_get(st, request, ref value);
+
+            HandleStatusCode(statusCode, "get_opus_decoder_ctl", request, value);
+
+            return value;
+        }
+
+        public static void set_opus_decoder_ctl(IntPtr st, OpusCtlSetRequest request, int value)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusDecoder");
+
+            OpusStatusCode statusCode = (OpusStatusCode)opus_decoder_ctl_set(st, request, value);
+
+            HandleStatusCode(statusCode, "set_opus_decoder_ctl", request, value);
+        }
+        public static IntPtr opus_decoder_create(SamplingRate Fs, Channels channels)
+        {
+            int size = Wrapper.opus_decoder_get_size(channels);
+            IntPtr ptr = Marshal.AllocHGlobal(size);
+
+            OpusStatusCode statusCode = Wrapper.opus_decoder_init(ptr, Fs, channels);
+
+            try
+            {
+                HandleStatusCode(statusCode, "opus_decoder_create", Fs, channels);
+            }
+            catch (Exception ex)
+            {
+                if (ptr != IntPtr.Zero)
+                {
+                    Wrapper.opus_decoder_destroy(ptr);
+                    ptr = IntPtr.Zero;
+                }
+
+                throw ex;
+            }
+
+            return ptr;
+        }
+
+        public static void opus_decoder_destroy(IntPtr st)
+        {
+            Marshal.FreeHGlobal(st);
+        }
+
+        public static int opus_decode(IntPtr st, FrameBuffer data, short[] pcm, int decode_fec, int channels)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusDecoder");
+
+            int numSamplesDecoded = opus_decode(st, data.Ptr, data.Length, pcm, pcm.Length / channels, decode_fec);
+
+            if (numSamplesDecoded == (int)OpusStatusCode.InvalidPacket)
+                return 0;
+
+            if (numSamplesDecoded <= 0)
+            {
+                HandleStatusCode((OpusStatusCode)numSamplesDecoded, "opus_decode/short", data.Length, pcm.Length, decode_fec, channels);
+            }
+
+            return numSamplesDecoded;
+        }
+
+        public static int opus_decode(IntPtr st, FrameBuffer data, float[] pcm, int decode_fec, int channels)
+        {
+            if (st == IntPtr.Zero)
+                throw new ObjectDisposedException("OpusDecoder");
+
+            int numSamplesDecoded = opus_decode_float(st, data.Ptr, data.Length, pcm, pcm.Length / channels, decode_fec);
+
+            if (numSamplesDecoded == (int)OpusStatusCode.InvalidPacket)
+                return 0;
+
+            if (numSamplesDecoded <= 0)
+            {
+                HandleStatusCode((OpusStatusCode)numSamplesDecoded, "opus_decode/float", data.Length, pcm.Length, decode_fec, channels);
+            }
+
+            return numSamplesDecoded;
+        }
+
+        private static void HandleStatusCode(OpusStatusCode statusCode, params object[] info)
+        {
+            if (statusCode != OpusStatusCode.OK)
+            {
+                var infoMsg = "";
+                foreach (var i in info) infoMsg += i.ToString() + ":";
+                throw new OpusException(statusCode, infoMsg  + Marshal.PtrToStringAnsi(opus_strerror(statusCode)));
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/POpusCodec/OpusWrapper.cs.meta

@@ -0,0 +1,11 @@
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+  defaultReferences: []
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+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Platform.cs

@@ -0,0 +1,275 @@
+using System;
+
+namespace Photon.Voice
+{
+    public static class Platform
+    {
+        static public IDeviceEnumerator CreateAudioInEnumerator(ILogger logger)
+        {
+
+#if WINDOWS_UWP || ENABLE_WINMD_SUPPORT
+            return new UWP.AudioInEnumerator(logger);
+#elif PHOTON_VOICE_WINDOWS || UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN
+            return new Windows.AudioInEnumerator(logger);
+#elif UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+            return new MacOS.AudioInEnumerator(logger);
+#else
+            return new AudioInEnumeratorNotSupported(logger);
+#endif
+        }
+
+        static public IAudioInChangeNotifier CreateAudioInChangeNotifier(Action callback, ILogger logger)
+        {
+#if (UNITY_IOS && !UNITY_EDITOR)
+            return new IOS.AudioInChangeNotifier(callback, logger);
+#elif UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+            return new MacOS.AudioInChangeNotifier(callback, logger);
+#elif UNITY_SWITCH && !UNITY_EDITOR
+            return new Switch.AudioInChangeNotifier(callback, logger);
+#else
+            return new AudioInChangeNotifierNotSupported(callback, logger);
+#endif
+        }
+
+        static public IEncoder CreateDefaultAudioEncoder<T>(ILogger logger, VoiceInfo info)
+        {
+            switch (info.Codec)
+            {
+                case Codec.AudioOpus:
+                    return OpusCodec.Factory.CreateEncoder<T[]>(info, logger);
+                case Codec.Raw: // Debug only. Assumes that original data is short[].
+                    return new RawCodec.Encoder<T>();
+                default:
+                    throw new UnsupportedCodecException("Platform.CreateDefaultAudioEncoder", info.Codec);
+            }
+        }
+
+        static public IAudioDesc CreateDefaultAudioSource(ILogger logger, DeviceInfo dev, int samplingRate, int channels, object otherParams = null)
+        {
+#if PHOTON_VOICE_WINDOWS || UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN
+            return new Windows.WindowsAudioInPusher(dev.IsDefault ? -1 : dev.IDInt, logger);
+#elif UNITY_WEBGL && UNITY_2021_2_OR_NEWER && !UNITY_EDITOR // requires ES6
+            return new Unity.WebAudioMicIn(samplingRate, channels, logger);
+#elif UNITY_IOS && !UNITY_EDITOR
+            if (otherParams == null)
+            {
+                return new IOS.AudioInPusher(IOS.AudioSessionParametersPresets.VoIP, logger);
+            }
+            else
+            {
+                return new IOS.AudioInPusher((IOS.AudioSessionParameters)otherParams, logger);
+            }
+#elif UNITY_STANDALONE_OSX || UNITY_EDITOR_OSX
+            return new MacOS.AudioInPusher(dev.IsDefault ? -1 : dev.IDInt, logger);
+#elif UNITY_ANDROID && !UNITY_EDITOR
+            if (otherParams == null)
+            {
+                return new Unity.AndroidAudioInAEC(logger, true, true, true);
+            }
+            else
+            {
+                var p = (Unity.AndroidAudioInParameters)otherParams;
+                return new Unity.AndroidAudioInAEC(logger, p.EnableAEC, p.EnableAGC, p.EnableNS);
+            }            
+#elif UNITY_WSA && !UNITY_EDITOR
+            return new UWP.AudioInPusher(logger, samplingRate, channels, dev.IsDefault ? "" : dev.IDString);
+#elif UNITY_SWITCH && !UNITY_EDITOR
+            return new Switch.AudioInPusher(logger);
+#elif UNITY_5_3_OR_NEWER // #if UNITY
+            return new Unity.MicWrapper(dev.IDString, samplingRate, logger);
+#else
+            throw new UnsupportedPlatformException("Platform.CreateDefaultAudioSource");
+#endif
+        }
+
+#if PHOTON_VOICE_VIDEO_ENABLE
+        static public IDeviceEnumerator CreateVideoInEnumerator(ILogger logger)
+        {
+#if WINDOWS_UWP || ENABLE_WINMD_SUPPORT
+            return new UWP.VideoInEnumerator(logger);
+#elif UNITY_STANDALONE_WIN || UNITY_EDITOR_WIN || UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+            return new Unity.VideoInEnumerator(logger);
+#else
+            return new VideoInEnumeratorNotSupported(logger);
+#endif
+        }
+
+        static public IEncoderDirectImage CreateDefaultVideoEncoder(ILogger logger, VoiceInfo info)
+        {
+            switch (info.Codec)
+            {
+                case Codec.VideoVP8:
+                case Codec.VideoVP9:
+                    //return new FFmpegCodec.Encoder(logger, info);
+                    return new VPxCodec.Encoder(logger, info);
+#if PHOTON_VOICE_WINDOWS || UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
+                case Codec.VideoH264:
+                    //return new FFmpegCodec.Encoder(logger, info);
+                    return new Windows.MFTCodec.VideoEncoder(logger, info);
+#elif UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+                case Codec.VideoH264:
+                    //return new FFmpegCodec.Encoder(logger, info);
+                    return new MacOS.VideoEncoder(logger, info);
+#endif
+                default:
+                    throw new UnsupportedCodecException("Platform.CreateDefaultVideoEncoder", info.Codec);
+            }
+        }
+
+        static public IDecoderDirect<ImageBufferNative> CreateDefaultVideoDecoder(ILogger logger, VoiceInfo info)
+        {
+            switch (info.Codec)
+            {
+                case Codec.VideoVP8:
+                case Codec.VideoVP9:
+                    //return new FFmpegCodec.Decoder(logger);
+                    return new VPxCodec.Decoder(logger);
+#if PHOTON_VOICE_WINDOWS || UNITY_EDITOR_WIN || UNITY_STANDALONE_WIN
+                case Codec.VideoH264:
+                    //return new FFmpegCodec.Decoder(logger);
+                    return new Windows.MFTCodec.VideoDecoder(logger, info);
+#elif UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+                case Codec.VideoH264:
+                    //return new FFmpegCodec.Decoder(logger);
+                    return new MacOS.VideoDecoder(logger, info);
+                    break;
+#endif
+                default:
+                    throw new UnsupportedCodecException("Platform.CreateDefaultVideoDecoder", info.Codec);
+            }
+        }
+
+        static public IVideoRecorder CreateDefaultVideoRecorder(ILogger logger, VoiceInfo info, DeviceInfo camDevice, Action<IVideoRecorder> onReady)
+        {
+            // native platform-specific recorders
+#if UNITY_ANDROID && !UNITY_EDITOR
+            return new Unity.AndroidVideoRecorderSurfaceView(logger, info, onReady);
+#elif UNITY_IOS && !UNITY_EDITOR
+            if (info.Codec == Codec.VideoH264)
+            {
+                return new IOS.VideoRecorderLayer(logger, info, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateDefaultVideoRecorder", info.Codec);
+#elif WINDOWS_UWP || (UNITY_WSA && !UNITY_EDITOR)
+            if (info.Codec == Codec.VideoH264)
+            {
+                return new UWP.VideoRecorderMediaPlayerElement(logger, info, camDevice.IDString, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateDefaultVideoRecorder", info.Codec);
+#else // multi-platform VideoRecorderUnity
+            var ve = CreateDefaultVideoEncoder(logger, info);
+#if UNITY_5_3_OR_NEWER // #if UNITY
+            return new Unity.VideoRecorderUnity(ve, null, camDevice.IDString, info.Width, info.Height, info.FPS, onReady);
+#else
+            throw new NotImplementedException("Platform.CreateDefaultVideoRecorder: default Video Recorder for the platform is not implemented.");
+#endif
+#endif
+        }
+
+        static public IVideoPlayer CreateDefaultVideoPlayer(ILogger logger, VoiceInfo info, Action<IVideoPlayer> onReady)
+        {
+            // native platform-specific players
+#if UNITY_ANDROID && !UNITY_EDITOR
+            var vd = new Unity.AndroidVideoDecoderSurfaceView(logger, info);
+            return new VideoPlayer(vd, vd.Preview, info.Width, info.Height, onReady);
+#elif UNITY_IOS && !UNITY_EDITOR
+            if (info.Codec == Codec.VideoH264)
+            {
+                var vd = new IOS.VideoDecoderLayer(logger);
+                return new VideoPlayer(vd, vd.PreviewLayer, info.Width, info.Height, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateDefaultVideoPlayer", info.Codec);
+#elif WINDOWS_UWP || (UNITY_WSA && !UNITY_EDITOR)
+            if (info.Codec == Codec.VideoH264)
+            {
+                var vd = new UWP.VideoDecoderMediaPlayerElement(logger, info);
+                return new VideoPlayer(vd, vd.PreviewMediaPlayerElement, info.Width, info.Height, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateDefaultVideoPlayer", info.Codec);
+#else  // multi-platform VideoPlayerUnity or generic VideoPlayer
+            var vd = CreateDefaultVideoDecoder(logger, info);
+#if UNITY_5_3_OR_NEWER // #if UNITY
+            var vp = new Unity.VideoPlayerUnity(vd, onReady);
+            // assign Draw method copying Image to Unity texture as software decoder Output
+            vd.Output = vp.Draw;
+            return vp;
+#else
+            throw new NotImplementedException("Platform.CreateDefaultVideoPlayer: default Video Player for the platform is not implemented.");
+#endif
+
+#endif
+        }
+
+        public static IPreviewManager CreateDefaultPreviewManager(ILogger logger)
+        {
+#if UNITY_ANDROID && !UNITY_EDITOR
+            return new Unity.AndroidPreviewManagerSurfaceView(logger);
+#elif UNITY_IOS && !UNITY_EDITOR
+            return new IOS.PreviewManagerLayer(logger);
+#elif WINDOWS_UWP || (UNITY_WSA && !UNITY_EDITOR)
+            return new UWP.PreviewManagerMediaPlayerElement(logger);
+#elif UNITY_5_3_OR_NEWER // #if UNITY
+            return new Unity.PreviewManagerScreenQuadTexture(logger); // uses custom shader
+            // return new Unity.PreviewManagerUnityGUI(); // uses GUI.DrawTexture
+#else
+            return null;
+#endif
+        }
+
+// Unity Texture Previews
+#if UNITY_5_3_OR_NEWER // #if UNITY
+        static public IVideoRecorder CreateVideoRecorderUnityTexture(ILogger logger, VoiceInfo info, DeviceInfo camDevice, Action<IVideoRecorder> onReady)
+        {
+#if UNITY_ANDROID && !UNITY_EDITOR
+            return new Unity.AndroidVideoRecorderUnityTexture(logger, info, onReady);
+#elif UNITY_IOS && !UNITY_EDITOR
+            if (info.Codec == Codec.VideoH264)
+            {
+                return new IOS.VideoRecorderUnityTexture(logger, info, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateVideoRecorderUnityTexture", info.Codec);
+#elif WINDOWS_UWP || (UNITY_WSA && !UNITY_EDITOR)
+            if (info.Codec == Codec.VideoH264)
+            {
+                return new UWP.VideoRecorderUnityTexture(logger, info, camDevice.IDString, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateVideoRecorderUnityTexture", info.Codec);
+#else // multi-platform VideoRecorderUnity
+            var ve = CreateDefaultVideoEncoder(logger, info);
+            return new Unity.VideoRecorderUnity(ve, null, camDevice.IDString, info.Width, info.Height, info.FPS, onReady);
+#endif
+        }
+
+        static public IVideoPlayer CreateVideoPlayerUnityTexture(ILogger logger, VoiceInfo info, Action<IVideoPlayer> onReady)
+        {
+#if UNITY_ANDROID && !UNITY_EDITOR
+            return new Unity.AndroidVideoPlayerUnityTexture(logger, info, onReady);
+#elif UNITY_IOS && !UNITY_EDITOR
+            if (info.Codec == Codec.VideoH264)
+            {
+                return new IOS.VideoPlayerUnityTexture(logger, info, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateVideoPlayerUnityTexture", info.Codec);
+#elif WINDOWS_UWP || (UNITY_WSA && !UNITY_EDITOR)
+            if (info.Codec == Codec.VideoH264)
+            {
+                return new UWP.VideoPlayerUnityTexture(logger, info, onReady);
+            }
+            throw new UnsupportedCodecException("Platform.CreateVideoPlayerUnityTexture", info.Codec);
+#else  // multi-platform VideoPlayerUnity
+            var vd = CreateDefaultVideoDecoder(logger, info);
+            var vp = new Unity.VideoPlayerUnity(vd, onReady);
+            // assign Draw method copying Image to Unity texture as software decoder Output
+            vd.Output = vp.Draw;
+            return vp;
+#endif
+        }
+
+        static public IPreviewManager CreatePreviewManagerUnityTexture(ILogger logger)
+        {
+            return new Unity.PreviewManagerScreenQuadTexture(logger);
+        }
+#endif // UNITY_5_3_OR_NEWER
+#endif // PHOTON_VOICE_VIDEO_ENABLE
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Platform.cs.meta

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+  userData: 
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+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/RawCodec.cs

@@ -0,0 +1,131 @@
+using System;
+
+namespace Photon.Voice
+{
+    public class RawCodec
+    {
+        public class Encoder<T> : IEncoderDirect<T[]>
+        {
+            public string Error { get; private set; }
+
+            public Action<ArraySegment<byte>, FrameFlags> Output { set; get; }
+
+            int sizeofT = System.Runtime.InteropServices.Marshal.SizeOf(default(T));
+            byte[] byteBuf = new byte[0];
+            private static readonly ArraySegment<byte> EmptyBuffer = new ArraySegment<byte>(new byte[] { });
+
+            public ArraySegment<byte> DequeueOutput(out FrameFlags flags)
+            {
+                flags = 0;
+                return EmptyBuffer;
+            }
+
+            public void EndOfStream()
+            {
+            }
+
+            public I GetPlatformAPI<I>() where I : class
+            {
+                return null;
+            }
+
+            public void Dispose()
+            {
+            }
+
+            public void Input(T[] buf)
+            {
+                if (Error != null)
+                {
+                    return;
+                }
+                if (Output == null)
+                {
+                    Error = "RawCodec.Encoder: Output action is not set";
+                    return;
+                }
+                if (buf == null)
+                {
+                    return;
+                }
+                if (buf.Length == 0)
+                {
+                    return;
+                }
+
+                var s = buf.Length * sizeofT;
+                if (byteBuf.Length < s)
+                {
+                    byteBuf = new byte[s];
+                }
+                Buffer.BlockCopy(buf, 0, byteBuf, 0, s);
+                Output(new ArraySegment<byte>(byteBuf, 0, s), 0);
+            }
+        }
+
+        public class Decoder<T> : IDecoder
+        {
+            public string Error { get; private set; }
+
+            public Decoder(Action<FrameOut<T>> output)
+            {
+                this.output = output;
+            }
+
+            public void Open(VoiceInfo info)
+            {
+            }
+
+            T[] buf = new T[0];
+            int sizeofT = System.Runtime.InteropServices.Marshal.SizeOf(default(T));
+
+			public void Input(ref FrameBuffer byteBuf)
+            {
+                if (byteBuf.Array == null)
+                {
+                    return;
+                }
+                if (byteBuf.Length == 0)
+                {
+                    return;
+                }
+
+                var s = byteBuf.Length / sizeofT;
+                if (buf.Length < s)
+                {
+                    buf = new T[s];
+                }
+                Buffer.BlockCopy(byteBuf.Array, byteBuf.Offset, buf, 0, byteBuf.Length);
+
+                output(new FrameOut<T>((T[])(object)buf, false));
+            }
+            public void Dispose()
+            {
+            }
+
+            private Action<FrameOut<T>> output;
+        }
+
+        // Adapts FrameOut<float> output to FrameOut<short> decoder
+        // new RawCodec.Decoder<short>(new RawCodec.ShortToFloat(output as Action<FrameOut<float>>).Output);
+        public class ShortToFloat
+        {
+            public ShortToFloat(Action<FrameOut<float>> output)
+            {
+                this.output = output;
+            }
+            public void Output(FrameOut<short> shortBuf)
+            {
+                if (buf.Length < shortBuf.Buf.Length)
+                {
+                    buf = new float[shortBuf.Buf.Length];
+                }
+                AudioUtil.Convert(shortBuf.Buf, buf, shortBuf.Buf.Length);
+                output(new FrameOut<float>((float[])(object)buf, false));
+            }
+
+            Action<FrameOut<float>> output;
+            float[] buf = new float[0];
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/RawCodec.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Util.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Linq;
+using System.Threading;
+
+namespace Photon.Voice
+{
+    // Does not work until Start() gets called
+    internal class SpacingProfile
+    {
+        short[] buf;
+        bool[] info;
+        int capacity;
+        int ptr = 0;
+        System.Diagnostics.Stopwatch watch;
+        long watchLast;
+        bool flushed;
+
+        public SpacingProfile(int capacity)
+        {
+            this.capacity = capacity;
+        }
+
+        public void Start()
+        {
+            if (watch == null)
+            {
+                buf = new short[capacity];
+                info = new bool[capacity];
+                watch = System.Diagnostics.Stopwatch.StartNew();
+            }
+        }
+
+        public void Update(bool lost, bool flush)
+        {
+            if (watch == null)
+            {
+                return;
+            }
+
+            if (flushed)
+            {
+                watchLast = watch.ElapsedMilliseconds;
+            }
+            var t = watch.ElapsedMilliseconds;
+            buf[ptr] = (short)(t - watchLast);
+            info[ptr] = lost;
+            watchLast = t;
+            ptr++;
+            if (ptr == buf.Length)
+            {
+                ptr = 0;
+            }
+            flushed = flush;
+        }
+
+        public string Dump
+        {
+            get
+            {
+                if (watch == null)
+                {
+                    return "Error: Profiler not started.";
+                }
+                else
+                {
+                    var buf2 = buf.Select((v, i) => (info[i] ? "-" : "") + v.ToString()).ToArray();
+                    return "max=" + Max + " " + string.Join(",", buf2, ptr, buf.Length - ptr) + ", " + string.Join(",", buf2, 0, ptr);
+                }
+            }
+        }
+
+        // do not call frequently
+        public int Max { get { return buf.Select(v => Math.Abs(v)).Max(); } }
+    }
+
+    internal static class Util
+    {
+        static public void SetThreadName(Thread t, string name)
+        {
+            const int MAX = 25;
+            if (name.Length > MAX)
+            {
+                name = name.Substring(0, MAX);
+            }
+            t.Name = name;
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Util.cs.meta

@@ -0,0 +1,11 @@
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+guid: b9318da328735db4c94813dcec17ada1
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Voice.cs

@@ -0,0 +1,662 @@
+// -----------------------------------------------------------------------
+// <copyright file="Voice.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2017 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Photon data streaming support.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+using System;
+
+using System.Collections.Generic;
+using System.Threading;
+
+namespace Photon.Voice
+{
+    /// <summary>
+    /// Interface for pulling data, in case this is more appropriate than pushing it.
+    /// </summary>
+    public interface IDataReader<T> : IDisposable
+    {
+        /// <summary>Fill full given frame buffer with source uncompressed data or return false if not enough such data.</summary>
+        /// <param name="buffer">Buffer to fill.</param>
+        /// <returns>True if buffer was filled successfully, false otherwise.</returns>
+        bool Read(T[] buffer);
+    }
+
+    /// <summary>
+    /// Interface for classes that want their Service() function to be called regularly in the context of a LocalVoice.
+    /// </summary>
+    public interface IServiceable
+    {
+        /// <summary>Service function that should be called regularly.</summary>
+        void Service(LocalVoice localVoice);
+    }
+
+    public class FrameOut<T>
+    {
+        public FrameOut(T[] buf, bool endOfStream)
+        {
+            Set(buf, endOfStream);
+        }
+        public FrameOut<T> Set(T[] buf, bool endOfStream)
+        {
+            Buf = buf;
+            EndOfStream = endOfStream;
+            return this;
+        }
+        public T[] Buf { get; private set; }
+        public bool EndOfStream { get; private set; } // stream interrupted but may be resumed, flush the output
+    }
+
+    /// <summary>
+    /// Represents outgoing data stream.
+    /// </summary>
+    public class LocalVoice : IDisposable
+    {
+        public const int DATA_POOL_CAPACITY = 50; // TODO: may depend on data type and properties, set for average audio stream
+
+        [Obsolete("Use InterestGroup.")]
+        public byte Group { get { return InterestGroup; } set { InterestGroup = value; } }
+        /// <summary>If InterestGroup != 0, voice's data is sent only to clients listening to this group (if supported by transport).</summary>
+        public byte InterestGroup { get; set; }
+        /// <summary>Returns Info structure assigned on local voice cration.</summary>
+        public VoiceInfo Info { get { return info; } }
+        /// <summary>If true, stream data broadcasted.</summary>
+        public bool TransmitEnabled 
+        { 
+            get
+            {
+                return transmitEnabled;
+            }
+            set
+            {
+                if (transmitEnabled != value)
+                {
+                    if (transmitEnabled)
+                    {
+                        if (encoder != null && this.voiceClient.transport.IsChannelJoined(this.channelId))
+                        {
+                            encoder.EndOfStream();
+                        }
+                    }
+                    transmitEnabled = value;
+                }
+            }
+        }
+        private bool transmitEnabled = true;
+
+        /// <summary>Returns true if stream broadcasts.</summary>
+        public bool IsCurrentlyTransmitting 
+        { 
+            get { return Environment.TickCount - lastTransmitTime < NO_TRANSMIT_TIMEOUT_MS; } 
+        }
+
+        /// <summary>Sent frames counter.</summary>
+        public int FramesSent { get; private set; }
+
+        /// <summary>Sent frames bytes counter.</summary>
+        public int FramesSentBytes { get; private set; }
+
+        /// <summary>Send data reliable.</summary>
+        public bool Reliable { get; set; }
+
+        /// <summary>Send data encrypted.</summary>
+        public bool Encrypt { get; set; }
+
+        /// <summary>Optional user object attached to LocalVoice. its Service() will be called at each VoiceClient.Service() call.</summary>
+        public IServiceable LocalUserServiceable { get; set; }
+
+        /// <summary>
+        /// If true, outgoing stream routed back to client via server same way as for remote client's streams.
+        /// Can be swithed any time. OnRemoteVoiceInfoAction and OnRemoteVoiceRemoveAction are triggered if required.
+        /// This functionality availability depends on transport.
+        /// </summary>
+        public bool DebugEchoMode
+        {
+            get { return debugEchoMode; }
+            set
+            {
+                if (debugEchoMode != value)
+                {
+                    debugEchoMode = value;
+                    if (voiceClient != null && voiceClient.transport != null)
+                    {
+                        if (voiceClient.transport.IsChannelJoined(this.channelId))
+                        {
+                            if (debugEchoMode)
+                            {
+                                voiceClient.sendVoicesInfoAndConfigFrame(new List<LocalVoice>() { this }, channelId, -1);
+                            }
+                            else
+                            {
+                                voiceClient.transport.SendVoiceRemove(this, channelId, -1);
+                            }
+                        }
+
+                    }
+                }
+            }
+        }
+        bool debugEchoMode;
+
+        public void SendSpacingProfileStart()
+        {
+            sendSpacingProfile.Start();
+        }
+
+        public string SendSpacingProfileDump { get { return sendSpacingProfile.Dump; } }
+
+        /// <summary>
+        /// Logs input frames time spacing profiling results. Do not call frequently.
+        /// </summary>
+        public int SendSpacingProfileMax { get { return sendSpacingProfile.Max; } }
+
+        public byte ID { get { return id; } }
+        public byte EvNumber { get { return evNumber; } }
+
+        #region nonpublic
+
+        protected VoiceInfo info;
+        protected IEncoder encoder;
+        internal byte id;
+        internal int channelId;
+        internal byte evNumber = 0; // sequence used by receivers to detect loss. will overflow.
+        protected VoiceClient voiceClient;
+        protected ArraySegment<byte> configFrame;
+
+        volatile protected bool disposed;
+        protected object disposeLock = new object();
+        internal LocalVoice() // for dummy voices
+        {
+        }
+
+        internal LocalVoice(VoiceClient voiceClient, IEncoder encoder, byte id, VoiceInfo voiceInfo, int channelId)
+        {
+            this.info = voiceInfo;
+            this.channelId = channelId;
+            this.voiceClient = voiceClient;
+            this.id = id;
+            if (encoder == null)
+            {
+                var m = LogPrefix + ": encoder is null";
+                voiceClient.logger.LogError(m);
+                throw new ArgumentNullException("encoder");
+            }
+            this.encoder = encoder;
+            this.encoder.Output = sendFrame;
+        }
+
+        protected string shortName { get { return "v#" + id + "ch#" + voiceClient.channelStr(channelId); } }
+
+        public string Name { get { return "Local " + info.Codec + " v#" + id + " ch#" + voiceClient.channelStr(channelId); } }
+        public string LogPrefix { get { return "[PV] " + Name; } }
+
+        private const int NO_TRANSMIT_TIMEOUT_MS = 100; // should be greater than SendFrame() call interval
+        private int lastTransmitTime = Environment.TickCount - NO_TRANSMIT_TIMEOUT_MS;
+        
+        internal virtual void service()
+        {
+            while (true)
+            {
+                FrameFlags f;
+                var x = encoder.DequeueOutput(out f);
+                if (x.Count == 0)
+                {
+                    break;
+                }
+                else
+                {
+                    sendFrame(x, f);
+                }
+            }
+            
+            if (LocalUserServiceable != null)
+            {
+                LocalUserServiceable.Service(this);
+            }
+        }
+
+        internal void sendConfigFrame(int targetPlayerId)
+        {
+            if (configFrame.Count != 0)
+            {
+                this.voiceClient.logger.LogInfo(LogPrefix + " Sending config frame to pl " + targetPlayerId);
+                sendFrame0(configFrame, FrameFlags.Config, targetPlayerId, true);
+            }
+        }
+
+        internal void sendFrame(ArraySegment<byte> compressed, FrameFlags flags)
+        {
+            if ((flags & FrameFlags.Config) != 0)
+            {
+                byte[] a = configFrame.Array != null && configFrame.Array.Length >= compressed.Count ? configFrame.Array : new byte[compressed.Count];
+                Buffer.BlockCopy(compressed.Array, compressed.Offset, a, 0, compressed.Count);
+                configFrame = new ArraySegment<byte>(a, 0, compressed.Count);
+
+                this.voiceClient.logger.LogInfo(LogPrefix + " Got config frame " + configFrame.Count + " bytes");
+            }
+            if (this.voiceClient.transport.IsChannelJoined(this.channelId) && this.TransmitEnabled)
+            {
+                sendFrame0(compressed, flags, 0, Reliable);
+            }
+        }
+
+        internal void sendFrame0(ArraySegment<byte> compressed, FrameFlags flags, int targetPlayerId, bool reliable)
+        {
+            if ((flags & FrameFlags.Config) != 0)
+            {
+                reliable = true;
+            }
+            if ((flags & FrameFlags.KeyFrame) != 0)
+            {
+                reliable = true;
+            }
+            // sending reliably breaks timing
+            // consider sending multiple EndOfStream packets for reliability
+            if ((flags & FrameFlags.EndOfStream) != 0)
+            {
+                //                reliable = true;
+            }
+
+            this.FramesSent++;
+            this.FramesSentBytes += compressed.Count;
+
+            this.voiceClient.transport.SendFrame(compressed, flags, evNumber, id, this.channelId, targetPlayerId, reliable, this);
+            this.sendSpacingProfile.Update(false, false);
+            if (this.DebugEchoMode)
+            {
+                this.eventTimestamps[evNumber] = Environment.TickCount;
+            }
+            evNumber++;            
+
+            if (compressed.Count > 0 && (flags & FrameFlags.Config) == 0) // otherwise the frame is config or control (EOS)
+            {
+                lastTransmitTime = Environment.TickCount;
+            }
+        }
+
+        internal Dictionary<byte, int> eventTimestamps = new Dictionary<byte, int>();
+
+        SpacingProfile sendSpacingProfile = new SpacingProfile(1000);
+        #endregion
+
+        /// <summary>Remove this voice from it's VoiceClient (using VoiceClient.RemoveLocalVoice</summary>
+        public void RemoveSelf()
+        {
+            if (this.voiceClient != null) // dummy voice can try to remove self
+            {
+                this.voiceClient.RemoveLocalVoice(this);
+            }
+        }
+
+        public virtual void Dispose()
+        {
+            if (!disposed)
+            {
+                if (this.encoder != null)
+                {
+                    this.encoder.Dispose();
+                }
+                disposed = true;
+            }
+        }
+    }
+
+    /// <summary>Event Actions and other options for a remote voice (incoming stream).</summary>
+    public struct RemoteVoiceOptions
+    {
+        public RemoteVoiceOptions(ILogger logger, string logPrefix, VoiceInfo voiceInfo)
+        {
+            this.logger = logger;
+            this.logPrefix = logPrefix;
+            this.voiceInfo = voiceInfo;
+            this.Decoder = null;
+            this.OnRemoteVoiceRemoveAction = null;
+        }
+
+		/// <summary>
+        /// Create default audio decoder and register a method to be called when a data frame is decoded.
+        /// </summary>
+        public void SetOutput(Action<FrameOut<float>> output)
+        {
+            if (voiceInfo.Codec == Codec.Raw) // Debug only. Assumes that original data is short[].
+            {
+                this.Decoder = new RawCodec.Decoder<short>(new RawCodec.ShortToFloat(output as Action<FrameOut<float>>).Output);
+                return;
+            }
+            setOutput<float>(output);
+        }
+
+        /// <summary>
+        /// Create default audio decoder and register a method to be called when a data frame is decoded.
+        /// </summary>
+        public void SetOutput(Action<FrameOut<short>> output)
+        {
+            if (voiceInfo.Codec == Codec.Raw) // Debug only. Assumes that original data is short[].
+            {
+                this.Decoder = new RawCodec.Decoder<short>(output);
+                return;
+            }
+            setOutput<short>(output);
+        }
+        
+        private void setOutput<T>(Action<FrameOut<T>> output)
+        {
+            logger.LogInfo(logPrefix + ": Creating default decoder " + voiceInfo.Codec + " for output FrameOut<" + typeof(T) + ">");
+            if (voiceInfo.Codec == Codec.AudioOpus)
+            {
+                this.Decoder = new OpusCodec.Decoder<T>(output, logger);
+            }
+            else
+            {
+                logger.LogError(logPrefix + ": FrameOut<" + typeof(T) + "> output set for non-audio decoder " + voiceInfo.Codec);
+            }
+        }
+
+        /// <summary>
+        /// Register a method to be called when the remote voice is removed.
+        /// </summary>
+        public Action OnRemoteVoiceRemoveAction { get; set; }
+
+        /// <summary>Remote voice data decoder. Use to set decoder options or override it with user decoder.</summary>
+        public IDecoder Decoder { get; set; }
+
+        private readonly ILogger logger;
+        private readonly VoiceInfo voiceInfo;
+        internal string logPrefix { get; }
+
+    }
+
+    internal class RemoteVoice : IDisposable
+    {
+        // Client.RemoteVoiceInfos support
+        internal VoiceInfo Info { get; private set; }
+        internal RemoteVoiceOptions options;
+        internal int channelId;
+        internal int DelayFrames { get; set; }
+        private int playerId;
+        private byte voiceId;
+        volatile private bool disposed;
+        object disposeLock = new object();
+
+        internal RemoteVoice(VoiceClient client, RemoteVoiceOptions options, int channelId, int playerId, byte voiceId, VoiceInfo info, byte lastEventNumber)
+        {
+            this.options = options;
+            this.LogPrefix = options.logPrefix;
+            this.voiceClient = client;
+            this.channelId = channelId;
+            this.playerId = playerId;
+            this.voiceId = voiceId;
+            this.Info = info;
+            this.lastEvNumber = lastEventNumber;
+
+            if (this.options.Decoder == null)
+            {
+                var m = LogPrefix + ": decoder is null (set it with options Decoder property or SetOutput method in OnRemoteVoiceInfoAction)";
+                voiceClient.logger.LogError(m);
+                disposed = true;
+                return;
+            }
+
+#if PHOTON_VOICE_THREADING_DISABLE
+            voiceClient.logger.LogInfo(LogPrefix + ": Starting decode singlethreaded");
+            options.Decoder.Open(Info);
+#else
+#if NETFX_CORE
+            Windows.System.Threading.ThreadPool.RunAsync((x) =>
+            {
+                decodeThread();
+            });
+#else
+            var t = new Thread(() => decodeThread());
+            Util.SetThreadName(t, "[PV] Dec" + shortName);
+            t.Start();
+#endif
+#endif
+        }
+        private string shortName { get { return "v#" + voiceId + "ch#" + voiceClient.channelStr(channelId) + "p#" + playerId; } }
+        public string LogPrefix { get; private set; }
+       
+        SpacingProfile receiveSpacingProfile = new SpacingProfile(1000);
+        
+        /// <summary>
+        /// Starts input frames time spacing profiling. Once started, it can't be stopped.
+        /// </summary>
+        public void ReceiveSpacingProfileStart()
+        {
+            receiveSpacingProfile.Start();
+        }
+
+        public string ReceiveSpacingProfileDump { get { return receiveSpacingProfile.Dump; } }
+
+        /// <summary>
+        /// Logs input frames time spacing profiling results. Do not call frequently.
+        /// </summary>
+        public int ReceiveSpacingProfileMax { get { return receiveSpacingProfile.Max; } }
+
+        internal byte lastEvNumber = 0;
+        private VoiceClient voiceClient;
+
+        private static byte byteDiff(byte latest, byte last)
+        {
+            return (byte)(latest - (last + 1));
+        }
+
+        internal void receiveBytes(ref FrameBuffer receivedBytes, byte evNumber)
+        {            
+            // receive-gap detection and compensation
+            if (evNumber != this.lastEvNumber) // skip check for 1st event 
+            {
+                int missing = byteDiff(evNumber, this.lastEvNumber);
+                if (missing == 0)
+                {
+                    this.lastEvNumber = evNumber;
+                }
+                else if (missing < 127)
+                {
+                    this.voiceClient.logger.LogWarning(LogPrefix + " evNumer: " + evNumber + " playerVoice.lastEvNumber: " + this.lastEvNumber + " missing: " + missing + " r/b " + receivedBytes.Length);
+                    this.voiceClient.FramesLost += missing;
+                    this.lastEvNumber = evNumber;
+                    // restoring missing frames
+                    receiveNullFrames(missing);
+                } else {
+                    // late (out of order) frames, just ignore them
+                    // these frames already counted in FramesLost
+                    this.voiceClient.logger.LogWarning(LogPrefix + " evNumer: " + evNumber + " playerVoice.lastEvNumber: " + this.lastEvNumber + " late: " + (255 - missing) + " r/b " + receivedBytes.Length);
+                }
+            }
+            this.receiveFrame(ref receivedBytes);
+        }
+
+        Queue<FrameBuffer> frameQueue = new Queue<FrameBuffer>();
+        AutoResetEvent frameQueueReady = new AutoResetEvent(false);
+        int flushingFramePosInQueue = -1; // if >= 0, we are flushing since the frame at this (dynamic) position got into the queue: process the queue w/o delays until this frame encountered
+        FrameBuffer nullFrame = new FrameBuffer();
+
+        void receiveFrame(ref FrameBuffer frame)
+        {
+#if PHOTON_VOICE_THREADING_DISABLE
+            if (disposed) return;
+
+            options.Decoder.Input(ref frame);
+            frame.Release();
+#else
+            lock (disposeLock) // sync with Dispose and decodeThread 'finally'
+            {
+                if (disposed) return;
+
+                receiveSpacingProfile.Update(false, (frame.Flags & FrameFlags.EndOfStream) != 0);
+                lock (frameQueue)
+                {
+                    frameQueue.Enqueue(frame);
+                    frame.Retain();
+                    if ((frame.Flags & FrameFlags.EndOfStream) != 0)
+                    {
+                        flushingFramePosInQueue = frameQueue.Count - 1;
+                    }
+                }
+                frameQueueReady.Set();
+            }
+#endif
+        }
+
+        void receiveNullFrames(int count)
+        {
+            lock (disposeLock) // sync with Dispose and decodeThread 'finally'
+            {
+                if (disposed) return;
+
+                
+                for (int i = 0; i < count; i++)
+                {
+                    receiveSpacingProfile.Update(true, false);
+                    lock (frameQueue)
+                    {
+                        frameQueue.Enqueue(nullFrame);
+                    }
+                }
+                frameQueueReady.Set();
+            }
+        }
+
+        void decodeThread()
+        {
+            //#if UNITY_5_3_OR_NEWER
+            //            UnityEngine.Profiling.Profiler.BeginThreadProfiling("PhotonVoice", LogPrefix);
+            //#endif
+
+            voiceClient.logger.LogInfo(LogPrefix + ": Starting decode thread");
+
+            var decoder = this.options.Decoder;
+
+            try
+            {
+#if UNITY_ANDROID
+                UnityEngine.AndroidJNI.AttachCurrentThread();
+#endif
+                decoder.Open(Info);
+
+                while (!disposed)
+                {
+                    frameQueueReady.WaitOne(); // Wait until data is pushed to the queue or Dispose signals.
+
+//#if UNITY_5_3_OR_NEWER
+//                    UnityEngine.Profiling.Profiler.BeginSample("Decoder");
+//#endif
+
+                    while (true) // Dequeue and process while the queue is not empty
+                    {
+                        if (disposed) break; // early exit to save few resources
+
+                        FrameBuffer f;
+                        bool haveFrame = false;
+                        lock (frameQueue)
+                        {
+                            var df = 0;
+                            // if flushing, process all frames in the queue
+                            // otherwise keep the queue length equal DelayFrames, also check DelayFrames for validity                            
+                            if (flushingFramePosInQueue < 0 && DelayFrames > 0 && DelayFrames < 300) // 10 sec. of video or max 3 sec. audio
+                            {
+                                df = DelayFrames;
+                            }
+                            if (frameQueue.Count > df)
+                            {
+                                f = frameQueue.Dequeue();
+                                flushingFramePosInQueue--; // -1 if f is flushing frame (f.Flags == FrameFlags.EndOfStream), the next frame will be processed with delay
+
+                                // leave it decrementing to have an idea when the last flush was triggered
+                                // but avoid overflow which will happen in 248.5 days for 100 input frames per sec
+                                if (flushingFramePosInQueue == Int32.MinValue)
+                                {
+                                    flushingFramePosInQueue = -1;
+                                }
+                                haveFrame = true;
+                            }
+                            else
+                            {
+                                break;
+                            }
+                        }
+                        if (haveFrame)
+                        {
+                            decoder.Input(ref f);
+                            f.Release();
+                        }                        
+                    }
+
+                    //#if UNITY_5_3_OR_NEWER
+                    //                    UnityEngine.Profiling.Profiler.EndSample();
+                    //#endif
+
+                }
+            }
+            catch (Exception e)
+            {
+                voiceClient.logger.LogError(LogPrefix + ": Exception in decode thread: " + e);
+                throw e;
+            }
+            finally
+            {
+                lock (disposeLock) // sync with receiveFrame/receiveNullFrames
+                {
+                    disposed = true; // set to disposing state if exiting due to exception
+                }
+                // cleaning up being sure that fields are not updated anymore
+#if NETFX_CORE
+                frameQueueReady.Dispose();
+#else
+                frameQueueReady.Close();
+#endif
+                lock (frameQueue)
+                {
+                    while (frameQueue.Count > 0)
+                    {
+                        frameQueue.Dequeue().Release();
+                    }
+                }
+                decoder.Dispose();
+#if UNITY_ANDROID
+                UnityEngine.AndroidJNI.DetachCurrentThread();
+#endif
+                voiceClient.logger.LogInfo(LogPrefix + ": Exiting decode thread");
+
+//#if UNITY_5_3_OR_NEWER
+//                UnityEngine.Profiling.Profiler.EndThreadProfiling();
+//#endif
+
+            }
+        }
+
+        internal void removeAndDispose()
+        {
+            if (options.OnRemoteVoiceRemoveAction != null)
+            {
+                options.OnRemoteVoiceRemoveAction();
+            }
+            Dispose();
+        }
+
+        public void Dispose()
+        {
+#if PHOTON_VOICE_THREADING_DISABLE
+            if (options.Decoder != null)
+            {
+                disposed = true;
+                options.Decoder.Dispose();
+            }
+#else
+            lock (disposeLock) // sync with receiveFrame/receiveNullFrames
+            {
+                if (!disposed)
+                {
+                    disposed = true;
+                    frameQueueReady.Set(); // let decodeThread dispose resporces and exit
+                }
+            }
+#endif
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/Voice.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceAudio.cs

@@ -0,0 +1,203 @@
+using System;
+
+namespace Photon.Voice
+{
+    public interface IResettable
+    {
+        void Reset();
+    }
+
+    /// <summary>Audio Source interface.</summary>
+    public interface IAudioDesc : IDisposable
+    {
+        /// <summary>Sampling rate of the audio signal (in Hz).</summary>
+        int SamplingRate { get; }
+
+        /// <summary>Number of channels in the audio signal.</summary>
+        int Channels { get; }
+
+        /// <summary>If not null, audio object is in invalid state.</summary>
+        string Error { get; }
+    }
+
+    // Trivial implementation. Used to build erroneous source.
+    public class AudioDesc : IAudioDesc
+    {
+        public AudioDesc(int samplingRate, int channels, string error)
+        {
+            SamplingRate = samplingRate;
+            Channels = channels;
+            Error = error;
+        }
+        public int SamplingRate { get; private set; }
+        public int Channels { get; private set; }
+        public string Error { get; private set; }
+        public void Dispose() { }
+    }
+    /// <summary>Audio Reader interface.</summary>
+    /// Opposed to an IAudioPusher (which will push its audio data whenever it is ready), 
+    /// an IAudioReader will deliver audio data when it is "pulled" (it's Read function is called).
+	public interface IAudioReader<T> : IDataReader<T>, IAudioDesc
+    {
+    }
+
+    /// <summary>Audio Pusher interface.</summary>
+    /// Opposed to an IAudioReader (which will deliver audio data when it is "pulled"),
+    /// an IAudioPusher will push its audio data whenever it is ready,
+	public interface IAudioPusher<T> : IAudioDesc
+	{
+        /// <summary>Set the callback function used for pushing data.</summary>
+        /// <param name="callback">Callback function to use.</param>
+        /// <param name="bufferFactory">Buffer factory used to create the buffer that is pushed to the callback</param>
+        void SetCallback(Action<T[]> callback, ObjectFactory<T[], int> bufferFactory);
+	}
+
+    /// <summary>Interface for an outgoing audio stream.</summary>
+    /// A LocalVoice always brings a LevelMeter and a VoiceDetector, which you can access using this interface.
+    public interface ILocalVoiceAudio
+    {
+        /// <summary>The VoiceDetector in use.</summary>
+        /// Use it to enable or disable voice detector and set its parameters.
+        AudioUtil.IVoiceDetector VoiceDetector { get; }
+
+        /// <summary>The LevelMeter utility in use.</summary>
+        AudioUtil.ILevelMeter LevelMeter { get; }
+
+        /// <summary>If true, voice detector calibration is in progress.</summary>
+        bool VoiceDetectorCalibrating { get; }
+
+        /// <summary>
+        /// Trigger voice detector calibration process.
+        /// </summary>
+        /// While calibrating, keep silence. Voice detector sets threshold based on measured backgroud noise level.
+        /// <param name="durationMs">Duration of calibration (in milliseconds).</param>
+        /// <param name="onCalibrated">Called when calibration is complete. Parameter is new threshold value.</param>
+        void VoiceDetectorCalibrate(int durationMs, Action<float> onCalibrated = null);
+    }
+
+    /// <summary>The type of samples used for audio processing.</summary>
+    public enum AudioSampleType
+    {
+        Source,
+        Short,
+        Float,
+    }
+
+    /// <summary>Outgoing audio stream.</summary>
+    abstract public class LocalVoiceAudio<T> : LocalVoiceFramed<T>, ILocalVoiceAudio
+    {
+        /// <summary>Create a new LocalVoiceAudio{T} instance.</summary>
+        /// <param name="voiceClient">The VoiceClient to use for this outgoing stream.</param>
+        /// <param name="voiceId">Numeric ID for this voice.</param>
+        /// <param name="encoder">Encoder to use for this voice.</param>
+        /// <param name="voiceInfo">Outgoing stream parameters.</param>
+        /// <param name="audioSourceDesc">Audio source parameters.</param>
+        /// <param name="channelId">Voice transport channel ID to use for this voice.</param>
+        /// <returns>The new LocalVoiceAudio{T} instance.</returns>
+        public static LocalVoiceAudio<T> Create(VoiceClient voiceClient, byte voiceId, IEncoder encoder, VoiceInfo voiceInfo, IAudioDesc audioSourceDesc, int channelId)
+        {
+            if (typeof(T) == typeof(float))
+            {
+                return new LocalVoiceAudioFloat(voiceClient, encoder, voiceId, voiceInfo, audioSourceDesc, channelId) as LocalVoiceAudio<T>;
+            }
+            else if (typeof(T) == typeof(short))
+            {
+                return new LocalVoiceAudioShort(voiceClient, encoder, voiceId, voiceInfo, audioSourceDesc, channelId) as LocalVoiceAudio<T>;
+            }
+            else
+            {
+                throw new UnsupportedSampleTypeException(typeof(T));
+            }
+        }
+
+    	public virtual AudioUtil.IVoiceDetector VoiceDetector { get { return voiceDetector; } }
+        protected AudioUtil.VoiceDetector<T> voiceDetector;
+        protected AudioUtil.VoiceDetectorCalibration<T> voiceDetectorCalibration;
+        public virtual AudioUtil.ILevelMeter LevelMeter { get { return levelMeter; } }
+        protected AudioUtil.LevelMeter<T> levelMeter;
+
+        /// <summary>Trigger voice detector calibration process.</summary>
+        /// While calibrating, keep silence. Voice detector sets threshold basing on measured backgroud noise level.
+        /// <param name="durationMs">Duration of calibration in milliseconds.</param>
+        /// <param name="onCalibrated">Called when calibration is complete. Parameter is new threshold value.</param>
+        public void VoiceDetectorCalibrate(int durationMs, Action<float> onCalibrated = null)
+        {
+            voiceDetectorCalibration.Calibrate(durationMs, onCalibrated);
+        }
+
+        /// <summary>True if the VoiceDetector is currently calibrating.</summary>
+        public bool VoiceDetectorCalibrating { get { return voiceDetectorCalibration.IsCalibrating; } }
+
+        protected int channels;
+        protected bool resampleSource;
+
+        internal LocalVoiceAudio(VoiceClient voiceClient, IEncoder encoder, byte id, VoiceInfo voiceInfo, IAudioDesc audioSourceDesc, int channelId)
+            : base(voiceClient, encoder, id, voiceInfo, channelId,
+                  voiceInfo.SamplingRate != 0 ? voiceInfo.FrameSize * audioSourceDesc.SamplingRate / voiceInfo.SamplingRate : voiceInfo.FrameSize
+                  )
+        {            
+            this.channels = voiceInfo.Channels;
+            if (audioSourceDesc.SamplingRate != voiceInfo.SamplingRate)
+            {
+                this.resampleSource = true;
+                this.voiceClient.logger.LogWarning("[PV] Local voice #" + this.id + " audio source frequency " + audioSourceDesc.SamplingRate + " and encoder sampling rate " + voiceInfo.SamplingRate + " do not match. Resampling will occur before encoding.");
+            }
+        }
+        protected void initBuiltinProcessors()
+        {
+            if (this.resampleSource)
+            {
+                AddPostProcessor(new AudioUtil.Resampler<T>(this.info.FrameSize, channels));
+            }
+            this.voiceDetectorCalibration = new AudioUtil.VoiceDetectorCalibration<T>(voiceDetector, levelMeter, this.info.SamplingRate, (int)this.channels);
+            AddPostProcessor(levelMeter, voiceDetectorCalibration, voiceDetector); // level meter and calibration should be processed even if no signal detected
+        }
+    }
+
+    /// <summary>Dummy LocalVoiceAudio</summary>
+    /// For testing, this LocalVoiceAudio implementation features a <see cref="AudioUtil.VoiceDetectorDummy"></see> and a <see cref="AudioUtil.LevelMeterDummy"></see>
+    public class LocalVoiceAudioDummy : LocalVoice, ILocalVoiceAudio
+    {
+        private AudioUtil.VoiceDetectorDummy voiceDetector;
+        private AudioUtil.LevelMeterDummy levelMeter;
+
+        public AudioUtil.IVoiceDetector VoiceDetector { get { return voiceDetector; } }
+        public AudioUtil.ILevelMeter LevelMeter { get { return levelMeter; } }
+        public bool VoiceDetectorCalibrating { get { return false; } }
+
+        public void VoiceDetectorCalibrate(int durationMs, Action<float> onCalibrated = null) { }
+        public LocalVoiceAudioDummy()
+        {
+            voiceDetector = new AudioUtil.VoiceDetectorDummy();
+            levelMeter = new AudioUtil.LevelMeterDummy();
+        }
+        /// <summary>A Dummy LocalVoiceAudio instance.</summary>
+        public static LocalVoiceAudioDummy Dummy = new LocalVoiceAudioDummy();
+    }
+
+    /// <summary>Specialization of <see cref="LocalVoiceAudio{T}"></see> for float audio</summary>
+    public class LocalVoiceAudioFloat : LocalVoiceAudio<float>
+    {
+        internal LocalVoiceAudioFloat(VoiceClient voiceClient, IEncoder encoder, byte id, VoiceInfo voiceInfo, IAudioDesc audioSourceDesc, int channelId)
+            : base(voiceClient, encoder, id, voiceInfo, audioSourceDesc, channelId)
+        {
+            // these 2 processors go after resampler
+            this.levelMeter = new AudioUtil.LevelMeterFloat(this.info.SamplingRate, this.info.Channels);
+            this.voiceDetector = new AudioUtil.VoiceDetectorFloat(this.info.SamplingRate, this.info.Channels);
+            initBuiltinProcessors();
+        }
+    }
+
+    /// <summary>Specialization of <see cref="LocalVoiceAudio{T}"></see> for short audio</summary>
+    public class LocalVoiceAudioShort : LocalVoiceAudio<short>
+    {
+        internal LocalVoiceAudioShort(VoiceClient voiceClient, IEncoder encoder, byte id, VoiceInfo voiceInfo, IAudioDesc audioSourceDesc, int channelId)
+            : base(voiceClient, encoder, id, voiceInfo,audioSourceDesc, channelId)
+        {
+            // these 2 processors go after resampler
+            this.levelMeter = new AudioUtil.LevelMeterShort(this.info.SamplingRate, this.info.Channels); //1/2 sec
+            this.voiceDetector = new AudioUtil.VoiceDetectorShort(this.info.SamplingRate, this.info.Channels);
+            initBuiltinProcessors();
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceAudio.cs.meta

@@ -0,0 +1,11 @@
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Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceClient.cs

@@ -0,0 +1,756 @@
+// -----------------------------------------------------------------------
+// <copyright file="VoiceClient.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2017 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Photon data streaming support.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+using System;
+using System.Linq;
+using System.Collections.Generic;
+
+namespace Photon.Voice
+{
+    public interface ILogger
+    {
+        void LogError(string fmt, params object[] args);
+        void LogWarning(string fmt, params object[] args);
+        void LogInfo(string fmt, params object[] args);
+        void LogDebug(string fmt, params object[] args);
+    }
+
+    public interface IVoiceTransport
+    {
+        bool IsChannelJoined(int channelId);
+        // targetPlayerId: to all if 0, to myself if -1
+        void SendVoicesInfo(IEnumerable<LocalVoice> voices, int channelId, int targetPlayerId);
+        // targetPlayerId: to all if 0, to myself if -1
+        void SendVoiceRemove(LocalVoice voice, int channelId, int targetPlayerId);
+        // targetPlayerId: to all if 0, to myself if -1
+        void SendFrame(ArraySegment<byte> data, FrameFlags flags, byte evNumber, byte voiceId, int channelId, int targetPlayerId, bool reliable, LocalVoice localVoice);
+        string ChannelIdStr(int channelId);
+        string PlayerIdStr(int playerId);
+    }
+
+    /// <summary>
+    /// Voice client interact with other clients on network via IVoiceTransport.
+    /// </summary>        
+    public class VoiceClient : IDisposable
+    {
+        internal IVoiceTransport transport;
+        internal ILogger logger;
+
+        /// <summary>Lost frames counter.</summary>
+        public int FramesLost { get; internal set; }
+
+        /// <summary>Received frames counter.</summary>
+        public int FramesReceived { get; private set; }
+
+        /// <summary>Sent frames counter.</summary>
+        public int FramesSent { get { int x = 0; foreach (var v in this.localVoices) { x += v.Value.FramesSent; } return x; } }
+
+        /// <summary>Sent frames bytes counter.</summary>
+        public int FramesSentBytes { get { int x = 0; foreach (var v in this.localVoices) { x += v.Value.FramesSentBytes; } return x; } }
+
+        /// <summary>Average time required voice packet to return to sender.</summary>
+        public int RoundTripTime { get; private set; }
+
+        /// <summary>Average round trip time variation.</summary>
+        public int RoundTripTimeVariance { get; private set; }
+
+        /// <summary>Do not log warning when duplicate info received.</summary>
+        public bool SuppressInfoDuplicateWarning { get; set; }
+
+        /// <summary>Remote voice info event delegate.</summary>        
+        public delegate void RemoteVoiceInfoDelegate(int channelId, int playerId, byte voiceId, VoiceInfo voiceInfo, ref RemoteVoiceOptions options);
+
+        /// <summary>
+        /// Register a method to be called when remote voice info arrived (after join or new new remote voice creation).
+        /// Metod parameters: (int channelId, int playerId, byte voiceId, VoiceInfo voiceInfo, ref RemoteVoiceOptions options);
+        /// </summary>
+        public RemoteVoiceInfoDelegate OnRemoteVoiceInfoAction { get; set; }
+
+        /// <summary>Lost frames simulation ratio.</summary>
+        public int DebugLostPercent { get; set; }
+
+        private int prevRtt = 0;
+        /// <summary>Iterates through copy of all local voices list.</summary>
+        public IEnumerable<LocalVoice> LocalVoices
+        {
+            get
+            {
+                var res = new LocalVoice[this.localVoices.Count];
+                this.localVoices.Values.CopyTo(res, 0);
+                return res;
+            }
+        }
+
+        /// <summary>Iterates through copy of all local voices list of given channel.</summary>
+        public IEnumerable<LocalVoice> LocalVoicesInChannel(int channelId)
+        {
+            List<LocalVoice> channelVoices;
+            if (this.localVoicesPerChannel.TryGetValue(channelId, out channelVoices))
+            {
+                var res = new LocalVoice[channelVoices.Count];
+                channelVoices.CopyTo(res, 0);
+                return res;
+            }
+            else
+            {
+                return new LocalVoice[0];
+            }
+        }
+
+        /// <summary>Iterates through all remote voices infos.</summary>
+        public IEnumerable<RemoteVoiceInfo> RemoteVoiceInfos
+        {
+            get
+            {
+                foreach (var playerVoices in this.remoteVoices)
+                {
+                    foreach (var voice in playerVoices.Value)
+                    {
+                        yield return new RemoteVoiceInfo(voice.Value.channelId, playerVoices.Key, voice.Key, voice.Value.Info);
+                    }
+                }
+            }
+        }
+
+        public void LogSpacingProfiles()
+        {
+            foreach (var voice in this.localVoices)
+            {
+                voice.Value.SendSpacingProfileStart(); // in case it's not started yet
+                this.logger.LogInfo(voice.Value.LogPrefix + " ev. prof.: " + voice.Value.SendSpacingProfileDump);
+            }
+            foreach (var playerVoices in this.remoteVoices)
+            {
+                foreach (var voice in playerVoices.Value)
+                {
+                    voice.Value.ReceiveSpacingProfileStart(); // in case it's not started yet
+                    this.logger.LogInfo(voice.Value.LogPrefix + " ev. prof.: " + voice.Value.ReceiveSpacingProfileDump);
+                }
+            }
+        }
+
+        public void LogStats()
+        {
+            int dc = FrameBuffer.statDisposerCreated;
+            int dd = FrameBuffer.statDisposerDisposed;
+            int pp = FrameBuffer.statPinned;
+            int pu = FrameBuffer.statUnpinned;
+            this.logger.LogInfo("[PV] FrameBuffer stats Disposer: " + dc + " - " + dd + " = " + (dc - dd));
+            this.logger.LogInfo("[PV] FrameBuffer stats Pinned: " + pp + " - " + pu + " = " + (pp - pu));
+        }
+        
+        public void SetRemoteVoiceDelayFrames(Codec codec, int delayFrames)
+        {
+            remoteVoiceDelayFrames[codec] = delayFrames;
+            foreach (var playerVoices in this.remoteVoices)
+            {
+                foreach (var voice in playerVoices.Value)
+                {
+                    if (codec == voice.Value.Info.Codec)
+                    {
+                        voice.Value.DelayFrames = delayFrames;
+                    }
+                }
+            }
+        }
+
+        // store delay to apply on new remote voices
+        private Dictionary<Codec, int> remoteVoiceDelayFrames = new Dictionary<Codec, int>();
+
+        public struct CreateOptions
+        {
+            public byte VoiceIDMin;
+            public byte VoiceIDMax;
+
+            static public CreateOptions Default = new CreateOptions()
+            {
+                VoiceIDMin = 1, // 0 means invalid id
+                VoiceIDMax = 15 // preserve ids for other clients creating voices for the same player (server plugin)
+            };
+        }
+
+        /// <summary>Creates VoiceClient instance</summary>
+        public VoiceClient(IVoiceTransport transport, ILogger logger, CreateOptions opt = default(CreateOptions))
+        {
+            this.transport = transport;
+            this.logger = logger;
+            if (opt.Equals(default(CreateOptions)))
+            {
+                opt = CreateOptions.Default;
+            }
+            this.voiceIDMin = opt.VoiceIDMin;
+            this.voiceIDMax = opt.VoiceIDMax;
+            this.voiceIdLast = this.voiceIDMax;
+        }
+
+        /// <summary>
+        /// This method dispatches all available incoming commands and then sends this client's outgoing commands.
+        /// Call this method regularly (2..20 times a second).
+        /// </summary>
+        public void Service()
+        {
+            foreach (var v in localVoices)
+            {
+                v.Value.service();
+            }
+        }
+
+        private LocalVoice createLocalVoice(int channelId, Func<byte, int, LocalVoice> voiceFactory)
+        {
+            var newId = getNewVoiceId();
+            if (newId != 0)
+            {
+                LocalVoice v = voiceFactory(newId, channelId);
+                if (v != null)
+                {
+                    addVoice(newId, channelId, v);
+                    this.logger.LogInfo(v.LogPrefix + " added enc: " + v.Info.ToString());
+                    return v;
+                }
+            }
+
+            return null;
+        }
+        /// <summary>
+        /// Creates basic outgoing stream w/o data processing support. Provided encoder should generate output data stream.
+        /// </summary>
+        /// <param name="voiceInfo">Outgoing stream parameters.</param>
+        /// <param name="channelId">Transport channel specific to transport.</param>
+        /// <param name="encoder">Encoder producing the stream.</param>
+        /// <returns>Outgoing stream handler.</returns>
+        public LocalVoice CreateLocalVoice(VoiceInfo voiceInfo, int channelId = 0, IEncoder encoder = null)
+        {
+            return (LocalVoice)createLocalVoice(channelId, (vId, chId) => new LocalVoice(this, encoder, vId, voiceInfo, chId));
+        }
+
+        /// <summary>
+        /// Creates outgoing stream consuming sequence of values passed in array buffers of arbitrary length which repacked in frames of constant length for further processing and encoding.
+        /// </summary>
+        /// <typeparam name="T">Type of data consumed by outgoing stream (element type of array buffers).</typeparam>
+        /// <param name="voiceInfo">Outgoing stream parameters.</param>
+        /// <param name="frameSize">Size of buffer LocalVoiceFramed repacks input data stream to.</param>
+        /// <param name="channelId">Transport channel specific to transport.</param>
+        /// <param name="encoder">Encoder compressing data stream in pipeline.</param>
+        /// <returns>Outgoing stream handler.</returns>
+        public LocalVoiceFramed<T> CreateLocalVoiceFramed<T>(VoiceInfo voiceInfo, int frameSize, int channelId = 0, IEncoder encoder = null)
+        {
+            return (LocalVoiceFramed<T>)createLocalVoice(channelId, (vId, chId) => new LocalVoiceFramed<T>(this, encoder, vId, voiceInfo, chId, frameSize));
+        }
+
+        public LocalVoiceAudio<T> CreateLocalVoiceAudio<T>(VoiceInfo voiceInfo, IAudioDesc audioSourceDesc, IEncoder encoder, int channelId)
+        {
+            return (LocalVoiceAudio<T>)createLocalVoice(channelId, (vId, chId) => LocalVoiceAudio<T>.Create(this, vId, encoder, voiceInfo, audioSourceDesc, chId));
+        }
+
+        /// <summary>
+        /// Creates outgoing audio stream of type automatically assigned and adds procedures (callback or serviceable) for consuming given audio source data.
+        /// Adds audio specific features (e.g. resampling, level meter) to processing pipeline and to returning stream handler.
+        /// </summary>
+        /// <param name="voiceInfo">Outgoing stream parameters.</param>
+        /// <param name="source">Streaming audio source.</param>
+        /// <param name="sampleType">Voice's audio sample type. If does not match source audio sample type, conversion will occur.</param>
+        /// <param name="channelId">Transport channel specific to transport.</param>
+        /// <param name="encoder">Audio encoder. Set to null to use default Opus encoder.</param>
+        /// <returns>Outgoing stream handler.</returns>
+        /// <remarks>
+        /// audioSourceDesc.SamplingRate and voiceInfo.SamplingRate may do not match. Automatic resampling will occur in this case.
+        /// </remarks>
+        public LocalVoice CreateLocalVoiceAudioFromSource(VoiceInfo voiceInfo, IAudioDesc source, AudioSampleType sampleType, IEncoder encoder = null, int channelId = 0)
+        {
+            // resolve AudioSampleType.Source to concrete type for encoder creation
+            if (sampleType == AudioSampleType.Source)
+            {
+                if (source is IAudioPusher<float> || source is IAudioReader<float>)
+                {
+                    sampleType = AudioSampleType.Float;
+                }
+                else if (source is IAudioPusher<short> || source is IAudioReader<short>)
+                {
+                    sampleType = AudioSampleType.Short;
+                }
+            }
+
+            if (encoder == null)
+            {
+                switch (sampleType)
+                {
+                    case AudioSampleType.Float:
+                        encoder = Platform.CreateDefaultAudioEncoder<float>(logger, voiceInfo);
+                        break;
+                    case AudioSampleType.Short:
+                        encoder = Platform.CreateDefaultAudioEncoder<short>(logger, voiceInfo);
+                        break;
+                }    
+            }
+                
+            if (source is IAudioPusher<float>)
+            {
+                if (sampleType == AudioSampleType.Short)
+                {
+                    logger.LogInfo("[PV] Creating local voice with source samples type conversion from IAudioPusher float to short.");
+                    var localVoice = CreateLocalVoiceAudio<short>(voiceInfo, source, encoder, channelId);
+                    // we can safely reuse the same buffer in callbacks from native code
+                    // 
+                    var bufferFactory = new FactoryReusableArray<float>(0);
+                    ((IAudioPusher<float>)source).SetCallback(buf => {
+                        var shortBuf = localVoice.BufferFactory.New(buf.Length);
+                        AudioUtil.Convert(buf, shortBuf, buf.Length);
+                        localVoice.PushDataAsync(shortBuf);
+                    }, bufferFactory);
+                    return localVoice;
+                }
+                else
+                {
+                    var localVoice = CreateLocalVoiceAudio<float>(voiceInfo, source, encoder, channelId);
+                    ((IAudioPusher<float>)source).SetCallback(buf => localVoice.PushDataAsync(buf), localVoice.BufferFactory);
+                    return localVoice;
+                }
+            }
+            else if (source is IAudioPusher<short>)
+            {
+                if (sampleType == AudioSampleType.Float)
+                {
+                    logger.LogInfo("[PV] Creating local voice with source samples type conversion from IAudioPusher short to float.");
+                    var localVoice = CreateLocalVoiceAudio<float>(voiceInfo, source, encoder, channelId);
+                    // we can safely reuse the same buffer in callbacks from native code
+                    // 
+                    var bufferFactory = new FactoryReusableArray<short>(0);
+                    ((IAudioPusher<short>)source).SetCallback(buf =>
+                    {
+                        var floatBuf = localVoice.BufferFactory.New(buf.Length);
+                        AudioUtil.Convert(buf, floatBuf, buf.Length);
+                        localVoice.PushDataAsync(floatBuf);
+                    }, bufferFactory);
+                    return localVoice;
+                }
+                else
+                {
+                    var localVoice = CreateLocalVoiceAudio<short>(voiceInfo, source, encoder, channelId);
+                    ((IAudioPusher<short>)source).SetCallback(buf => localVoice.PushDataAsync(buf), localVoice.BufferFactory);
+                    return localVoice;
+                }
+            }
+            else if (source is IAudioReader<float>)
+            {
+                if (sampleType == AudioSampleType.Short)
+                {
+                    logger.LogInfo("[PV] Creating local voice with source samples type conversion from IAudioReader float to short.");
+                    var localVoice = CreateLocalVoiceAudio<short>(voiceInfo, source, encoder, channelId);
+                    localVoice.LocalUserServiceable = new BufferReaderPushAdapterAsyncPoolFloatToShort(localVoice, source as IAudioReader<float>);
+                    return localVoice;
+                }
+                else
+                {
+                    var localVoice = CreateLocalVoiceAudio<float>(voiceInfo, source, encoder, channelId);
+                    localVoice.LocalUserServiceable = new BufferReaderPushAdapterAsyncPool<float>(localVoice, source as IAudioReader<float>);
+                    return localVoice;
+                }
+            }
+            else if (source is IAudioReader<short>)
+            {
+                if (sampleType == AudioSampleType.Float)
+                {
+                    logger.LogInfo("[PV] Creating local voice with source samples type conversion from IAudioReader short to float.");
+                    var localVoice = CreateLocalVoiceAudio<float>(voiceInfo, source, encoder, channelId);
+                    localVoice.LocalUserServiceable = new BufferReaderPushAdapterAsyncPoolShortToFloat(localVoice, source as IAudioReader<short>);
+                    return localVoice;
+                }
+                else
+                {
+                    var localVoice = CreateLocalVoiceAudio<short>(voiceInfo, source, encoder, channelId);
+                    localVoice.LocalUserServiceable = new BufferReaderPushAdapterAsyncPool<short>(localVoice, source as IAudioReader<short>);
+                    return localVoice;
+                }
+            }
+            else
+            {
+                logger.LogError("[PV] CreateLocalVoiceAudioFromSource does not support Voice.IAudioDesc of type {0}", source.GetType());
+                return LocalVoiceAudioDummy.Dummy;
+            }
+        }
+
+#if PHOTON_VOICE_VIDEO_ENABLE
+        /// <summary>
+        /// Creates outgoing video stream consuming sequence of image buffers.
+        /// </summary>
+        /// <param name="voiceInfo">Outgoing stream parameters.</param>
+        /// <param name="recorder">Video recorder.</param>
+        /// <param name="channelId">Transport channel specific to transport.</param>
+        /// <returns>Outgoing stream handler.</returns>
+        public LocalVoiceVideo CreateLocalVoiceVideo(VoiceInfo voiceInfo, IVideoRecorder recorder, int channelId = 0)
+        {
+            var lv = (LocalVoiceVideo)createLocalVoice(channelId, (vId, chId) => new LocalVoiceVideo(this, recorder.Encoder, vId, voiceInfo, chId));
+            if (recorder is IVideoRecorderPusher)
+            {
+                (recorder as IVideoRecorderPusher).VideoSink = lv;
+            }
+            return lv;
+        }
+#endif
+
+        private byte voiceIDMin;
+        private byte voiceIDMax;
+        private byte voiceIdLast; // inited with voiceIDMax: the first id will be voiceIDMin
+
+        private byte idInc(byte id)
+        {
+            return id == voiceIDMax ? voiceIDMin : (byte)(id + 1);
+        }
+
+        private byte getNewVoiceId()
+        {
+            var used = new bool[256];
+            foreach (var v in localVoices)
+            {
+                used[v.Value.id] = true;
+            }
+            for (byte id = idInc(voiceIdLast); id != voiceIdLast; id = idInc(id))
+            {
+                if (!used[id])
+                {
+                    voiceIdLast = id;
+                    return id;
+                }
+            }
+            return 0;
+        }
+
+        void addVoice(byte newId, int channelId, LocalVoice v)
+        {
+            localVoices[newId] = v;
+
+            List<LocalVoice> voiceList;
+            if (!localVoicesPerChannel.TryGetValue(channelId, out voiceList))
+            {
+                voiceList = new List<LocalVoice>();
+                localVoicesPerChannel[channelId] = voiceList;
+            }
+            voiceList.Add(v);
+
+            if (this.transport.IsChannelJoined(channelId))
+            {
+                sendVoicesInfoAndConfigFrame(new List<LocalVoice>() { v }, channelId, 0); // broadcast if joined
+            }
+            v.InterestGroup = this.GlobalInterestGroup;
+        }
+        /// <summary>
+        /// Removes local voice (outgoing data stream).
+        /// <param name="voice">Handler of outgoing stream to be removed.</param>
+        /// </summary>
+        public void RemoveLocalVoice(LocalVoice voice)
+        {
+            this.localVoices.Remove(voice.id);
+
+            this.localVoicesPerChannel[voice.channelId].Remove(voice);
+            if (this.transport.IsChannelJoined(voice.channelId))
+            {
+                this.transport.SendVoiceRemove(voice, voice.channelId, 0);
+            }
+
+            voice.Dispose();
+            this.logger.LogInfo(voice.LogPrefix + " removed");
+        }
+
+        private void sendChannelVoicesInfo(int channelId, int targetPlayerId)
+        {
+            if (this.transport.IsChannelJoined(channelId))
+            {
+                List<LocalVoice> voiceList;
+                if (this.localVoicesPerChannel.TryGetValue(channelId, out voiceList))
+                {
+                    sendVoicesInfoAndConfigFrame(voiceList, channelId, targetPlayerId);
+                }
+            }
+        }
+
+        internal void sendVoicesInfoAndConfigFrame(IEnumerable<LocalVoice> voiceList, int channelId, int targetPlayerId)
+        {
+            this.transport.SendVoicesInfo(voiceList, channelId, targetPlayerId);
+            foreach (var v in voiceList)
+            {
+                v.sendConfigFrame(targetPlayerId);
+            }
+
+            // send debug echo infos to myself if broadcast requested
+            if (targetPlayerId == 0)
+            {
+                var debugEchoVoices = localVoices.Values.Where(x => x.DebugEchoMode);
+                if (debugEchoVoices.Count() > 0)
+                {
+                    this.transport.SendVoicesInfo(debugEchoVoices, channelId, -1);
+                }
+            }
+        }
+
+        internal byte GlobalInterestGroup
+        {
+            get { return this.globalInterestGroup; }
+            set
+            {
+                this.globalInterestGroup = value;
+                foreach (var v in this.localVoices)
+                {
+                    v.Value.InterestGroup = this.globalInterestGroup;
+                }
+            }
+        }
+
+        #region nonpublic
+
+        private byte globalInterestGroup;
+
+        private Dictionary<byte, LocalVoice> localVoices = new Dictionary<byte, LocalVoice>();
+        private Dictionary<int, List<LocalVoice>> localVoicesPerChannel = new Dictionary<int, List<LocalVoice>>();
+        // player id -> voice id -> voice
+        private Dictionary<int, Dictionary<byte, RemoteVoice>> remoteVoices = new Dictionary<int, Dictionary<byte, RemoteVoice>>();
+
+        private void clearRemoteVoices()
+        {
+            foreach (var playerVoices in remoteVoices)
+            {
+                foreach (var voice in playerVoices.Value)
+                {
+                    voice.Value.removeAndDispose();
+                }
+            }
+            remoteVoices.Clear();
+            this.logger.LogInfo("[PV] Remote voices cleared");
+        }
+
+        private void clearRemoteVoicesInChannel(int channelId)
+        {
+            foreach (var playerVoices in remoteVoices)
+            {
+                List<byte> toRemove = new List<byte>();
+                foreach (var voice in playerVoices.Value)
+                {
+                    if (voice.Value.channelId == channelId)
+                    {
+                        voice.Value.removeAndDispose();
+                        toRemove.Add(voice.Key);
+                    }
+                }
+                foreach (var id in toRemove)
+                {
+                    playerVoices.Value.Remove(id);
+                }
+            }
+            this.logger.LogInfo("[PV] Remote voices for channel " + this.channelStr(channelId) + " cleared");
+        }
+
+        private void clearRemoteVoicesInChannelForPlayer(int channelId, int playerId)
+        {
+            Dictionary<byte, RemoteVoice> playerVoices = null;
+            if (remoteVoices.TryGetValue(playerId, out playerVoices))
+            {
+                List<byte> toRemove = new List<byte>();
+                foreach (var v in playerVoices)
+                {
+                    if (v.Value.channelId == channelId)
+                    {
+                        v.Value.removeAndDispose();
+                        toRemove.Add(v.Key);
+                    }
+                }
+                foreach (var id in toRemove)
+                {
+                    playerVoices.Remove(id);
+                }
+            }
+        }
+        
+		public void onJoinChannel(int channel)
+        {
+            sendChannelVoicesInfo(channel, 0);// my join, broadcast
+        }
+
+        public void onLeaveChannel(int channel)
+        {
+            clearRemoteVoicesInChannel(channel);
+        }
+
+        public void onLeaveAllChannels()
+        {
+            clearRemoteVoices();
+        }
+
+        public void onPlayerJoin(int channelId, int playerId)
+        {
+            sendChannelVoicesInfo(channelId, playerId);// send to new joined only
+        }
+
+        public void onPlayerLeave(int channelId, int playerId)
+        {
+            clearRemoteVoicesInChannelForPlayer(channelId, playerId);
+        }
+
+        public void onVoiceInfo(int channelId, int playerId, byte voiceId, byte eventNumber, VoiceInfo info)
+        {
+            Dictionary<byte, RemoteVoice> playerVoices = null;
+
+            if (!remoteVoices.TryGetValue(playerId, out playerVoices))
+            {
+                playerVoices = new Dictionary<byte, RemoteVoice>();
+                remoteVoices[playerId] = playerVoices;
+            }
+
+            if (!playerVoices.ContainsKey(voiceId))
+            {
+                var voiceStr = " p#" + this.playerStr(playerId) + " v#" + voiceId + " ch#" + channelStr(channelId);
+                this.logger.LogInfo("[PV] " + voiceStr + " Info received: " + info.ToString() + " ev=" + eventNumber);
+                
+                var logPrefix = "[PV] Remote " + info.Codec + voiceStr;
+                RemoteVoiceOptions options = new RemoteVoiceOptions(logger, logPrefix, info);
+                if (this.OnRemoteVoiceInfoAction != null)
+                {
+                    this.OnRemoteVoiceInfoAction(channelId, playerId, voiceId, info, ref options);
+                }
+                var rv = new RemoteVoice(this, options, channelId, playerId, voiceId, info, eventNumber);
+                playerVoices[voiceId] = rv;
+                int delayFrames;
+                if (remoteVoiceDelayFrames.TryGetValue(info.Codec, out delayFrames))
+                {
+                    rv.DelayFrames = delayFrames;
+                }
+            }
+            else
+            {
+                if (!this.SuppressInfoDuplicateWarning)
+                {
+                    this.logger.LogWarning("[PV] Info duplicate for voice #" + voiceId + " of player " + this.playerStr(playerId) + " at channel " + this.channelStr(channelId));
+                }
+            }
+        }
+
+        public void onVoiceRemove(int channelId, int playerId, byte[] voiceIds)
+        {
+            Dictionary<byte, RemoteVoice> playerVoices = null;
+            if (remoteVoices.TryGetValue(playerId, out playerVoices))
+            {
+                foreach (var voiceId in voiceIds)
+                {
+                    RemoteVoice voice;
+                    if (playerVoices.TryGetValue(voiceId, out voice))
+                    {
+                        playerVoices.Remove(voiceId);
+                        this.logger.LogInfo("[PV] Remote voice #" + voiceId + " of player " + this.playerStr(playerId) + " at channel " + this.channelStr(channelId) + " removed");
+                        voice.removeAndDispose();
+                    }
+                    else
+                    {
+                        this.logger.LogWarning("[PV] Remote voice #" + voiceId + " of player " + this.playerStr(playerId) + " at channel " + this.channelStr(channelId) + " not found when trying to remove");
+                    }
+                }
+            }
+            else
+            {
+                this.logger.LogWarning("[PV] Remote voice list of player " + this.playerStr(playerId) + " at channel " + this.channelStr(channelId) + " not found when trying to remove voice(s)");
+            }
+        }
+
+        Random rnd = new Random();
+        public void onFrame(int channelId, int playerId, byte voiceId, byte evNumber, ref FrameBuffer receivedBytes, bool isLocalPlayer)
+        {
+            if (isLocalPlayer)
+            {
+                // rtt measurement in debug echo mode
+                LocalVoice voice;
+                if (this.localVoices.TryGetValue(voiceId, out voice))
+                {
+                    int sendTime;
+                    if (voice.eventTimestamps.TryGetValue(evNumber, out sendTime))
+                    {
+                        int rtt = Environment.TickCount - sendTime;
+                        int rttvar = rtt - prevRtt;
+                        prevRtt = rtt;
+                        if (rttvar < 0) rttvar = -rttvar;
+                        this.RoundTripTimeVariance = (rttvar + RoundTripTimeVariance * 19) / 20;
+                        this.RoundTripTime = (rtt + RoundTripTime * 19) / 20;
+                    }
+                }
+                //internal Dictionary<byte, DateTime> localEventTimestamps = new Dictionary<byte, DateTime>();
+            }
+
+            if (this.DebugLostPercent > 0 && rnd.Next(100) < this.DebugLostPercent)
+            {
+                this.logger.LogWarning("[PV] Debug Lost Sim: 1 packet dropped");
+                return;
+            }
+
+            FramesReceived++;
+
+            Dictionary<byte, RemoteVoice> playerVoices = null;
+            if (remoteVoices.TryGetValue(playerId, out playerVoices))
+            {
+
+                RemoteVoice voice = null;
+                if (playerVoices.TryGetValue(voiceId, out voice))
+                {
+                    voice.receiveBytes(ref receivedBytes, evNumber);
+                }
+                else
+                {
+                    this.logger.LogWarning("[PV] Frame event for not inited voice #" + voiceId + " of player " + this.playerStr(playerId) + " at channel " + this.channelStr(channelId));
+                }
+            }
+            else
+            {
+                this.logger.LogWarning("[PV] Frame event for voice #" + voiceId + " of not inited player " + this.playerStr(playerId) + " at channel " + this.channelStr(channelId));
+            }
+        }
+
+        internal string channelStr(int channelId)
+        {
+            var str = this.transport.ChannelIdStr(channelId);
+            if (str != null)
+            {
+                return channelId + "(" + str + ")";
+            }
+            else
+            {
+                return channelId.ToString();
+            }
+        }
+
+        internal string playerStr(int playerId)
+        {
+            var str = this.transport.PlayerIdStr(playerId);
+            if (str != null)
+            {
+                return playerId + "(" + str + ")";
+            }
+            else
+            {
+                return playerId.ToString();
+            }
+        }
+        //public string ToStringFull()
+        //{
+        //    return string.Format("Photon.Voice.Client, local: {0}, remote: {1}",  localVoices.Count, remoteVoices.Count);
+        //}
+
+        #endregion
+
+        public void Dispose()
+        {
+            foreach (var v in this.localVoices)
+            {
+                v.Value.Dispose();
+            }
+            foreach (var playerVoices in remoteVoices)
+            {
+                foreach (var voice in playerVoices.Value)
+                {
+                    voice.Value.Dispose();
+                }
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceClient.cs.meta

@@ -0,0 +1,11 @@
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+guid: b957d86707d108044af9c76171188f87
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceCodec.cs

@@ -0,0 +1,377 @@
+// -----------------------------------------------------------------------
+// <copyright file="VoiceCodec.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2017 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Photon data streaming support.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice
+{
+    public enum FrameFlags : byte
+    {
+        Config = 1,
+        KeyFrame = 2,
+        PartialFrame = 4,
+        EndOfStream = 8
+    }
+
+    /// <summary>Generic encoder interface.</summary>
+    /// <remarks>
+    /// Depending on implementation, encoder should either call Output on eaach data frame or return next data frame in DequeueOutput() call.
+    /// </remarks>
+    public interface IEncoder : IDisposable
+    {
+        /// <summary>If not null, the object is in invalid state.</summary>
+        string Error { get; }
+        /// <summary>Set callback encoder calls on each encoded data frame (if such output supported).</summary>
+        Action<ArraySegment<byte>, FrameFlags> Output { set; }
+        /// <summary>Returns next encoded data frame (if such output supported).</summary>
+        ArraySegment<byte> DequeueOutput(out FrameFlags flags);
+        /// <summary>Forces an encoder to flush and produce frame with EndOfStream flag (in output queue).</summary>
+        void EndOfStream();
+        /// <summary>Returns an platform-specific interface.</summary>
+        I GetPlatformAPI<I>() where I : class;
+    }
+
+    /// <summary>Interface for an encoder which consumes input data via explicit call.</summary>
+    public interface IEncoderDirect<B> : IEncoder
+    {
+        /// <summary>Consumes the given raw data.</summary>
+        /// <param name="buf">Array containing raw data (e.g. audio samples).</param>
+        void Input(B buf);
+    }
+
+    /// <summary>Interface for an encoder which consumes images via explicit call.</summary>
+    public interface IEncoderDirectImage : IEncoderDirect<ImageBufferNative>
+    {
+        /// <summary>Recommended encoder input image format. Encoder may support other formats.</summary>
+        ImageFormat ImageFormat { get; }
+    }
+
+    /// <summary>Generic decoder interface.</summary>
+    public interface IDecoder : IDisposable
+    {
+        /// <summary>Open (initialize) the decoder.</summary>
+        /// <param name="info">Properties of the data stream to decode.</param>
+        void Open(VoiceInfo info);
+        /// <summary>If not null, the object is in invalid state.</summary>
+        string Error { get; }
+        /// <summary>Consumes the given encoded data.</summary>
+        /// <remarks>
+        /// The callee can call buf.Retain() to prevent the caller from disposing the buffer.
+        /// In this case, the callee should call buf.Release() when buffer is no longer needed.
+        /// </remarks>
+        void Input(ref FrameBuffer buf);
+    }
+
+    /// <summary>Interface for an decoder which outputs data via explicit call.</summary>
+    public interface IDecoderDirect<B> : IDecoder
+    {
+        /// <summary>Callback to call when a new decoded data buffer is available.</summary>
+        Action<B> Output { get; set; }
+    }
+
+    /// <summary>Exception thrown if an unsupported audio sample type is encountered.</summary>
+    /// <remarks>
+    /// PhotonVoice generally supports 32-bit floating point ("float") or 16-bit signed integer ("short") audio,
+    /// but it usually won't be converted automatically due to the high CPU overhead (and potential loss of precision) involved.
+    /// </remarks>
+    class UnsupportedSampleTypeException : Exception
+    {
+        /// <summary>Create a new UnsupportedSampleTypeException.</summary>
+        /// <param name="t">The sample type actually encountered.</param>
+        public UnsupportedSampleTypeException(Type t) : base("[PV] unsupported sample type: " + t) { }
+    }
+
+    /// <summary>Exception thrown if an unsupported codec is encountered.</summary>
+    class UnsupportedCodecException : Exception
+    {
+        /// <summary>Create a new UnsupportedCodecException.</summary>
+        /// <param name="info">The info prepending standard message.</param>
+        /// <param name="codec">The codec actually encountered.</param>
+        public UnsupportedCodecException(string info, Codec codec) : base("[PV] " + info + ": unsupported codec: " + codec) { }
+    }
+
+    /// <summary>Exception thrown if an unsupported platform is encountered.</summary>
+    class UnsupportedPlatformException : Exception
+    {
+        /// <summary>Create a new UnsupportedPlatformException.</summary>
+        /// <param name="subject">The info prepending standard message.</param>
+        /// /// <param name="platform">Optional platform name.</param>
+        public UnsupportedPlatformException(string subject, string platform = null) : base("[PV] " + subject + " does not support " + (platform == null ? "current" : platform) + " platform") { }
+    }
+
+    /// <summary>Enum for Media Codecs supported by PhotonVoice.</summary>
+    /// <remarks>Transmitted in <see cref="VoiceInfo"></see>. Do not change the values of this Enum!</remarks>
+    public enum Codec
+    {
+        Raw = 1,
+        /// <summary>OPUS audio</summary>
+        AudioOpus = 11,
+#if PHOTON_VOICE_VIDEO_ENABLE
+        VideoVP8 = 21,
+        VideoVP9 = 22,
+        VideoH264 = 31,
+#endif
+    }
+
+    public enum ImageFormat
+    {
+        Undefined,
+        I420, // native vpx (no format conversion before encodong)
+        YV12, // native vpx (no format conversion before encodong)
+        Android420,
+        ABGR,
+        BGRA,
+        ARGB,
+        NV12,
+    }
+
+    public enum Rotation
+    {
+        Undefined = -1,
+        Rotate0 = 0,      // No rotation.
+        Rotate90 = 90,    // Rotate 90 degrees clockwise.
+        Rotate180 = 180,  // Rotate 180 degrees.
+        Rotate270 = 270,  // Rotate 270 degrees clockwise.
+    }
+
+    public struct Flip
+    {
+        public bool IsVertical { get; private set; }
+        public bool IsHorizontal { get; private set; }
+
+        public static bool operator ==(Flip f1, Flip f2)
+        {
+            return f1.IsVertical == f2.IsVertical && f1.IsHorizontal == f2.IsHorizontal;
+        }
+
+        public static bool operator !=(Flip f1, Flip f2)
+        {
+            return f1.IsVertical != f2.IsVertical || f1.IsHorizontal != f2.IsHorizontal;
+        }
+
+        // trivial implementation to avoid warnings CS0660 and CS0661 about missing overrides when == and != defined 
+        public override bool Equals(object obj) { return base.Equals(obj); } 
+        public override int GetHashCode() { return base.GetHashCode(); }
+
+        public static Flip operator *(Flip f1, Flip f2)
+        {
+            return new Flip
+            {
+                IsVertical = f1.IsVertical != f2.IsVertical,
+                IsHorizontal = f1.IsHorizontal != f2.IsHorizontal,
+            };
+        }
+
+        public static Flip None;
+        public static Flip Vertical = new Flip() { IsVertical = true };
+        public static Flip Horizontal = new Flip() { IsHorizontal = true };
+        public static Flip Both = Vertical * Horizontal;
+    }
+
+    // Image buffer pool support
+    public struct ImageBufferInfo
+    {
+        [StructLayout(LayoutKind.Sequential)] // the struct instance may be used where IntPtr[] expected by native method
+        public struct StrideSet
+        {
+            private int stride0;
+            private int stride1;
+            private int stride2;
+            private int stride3;
+
+            public StrideSet(int length, int s0 = 0, int s1 = 0, int s2 = 0, int s3 = 0)
+            {
+                Length = length;
+                stride0 = s0;
+                stride1 = s1;
+                stride2 = s2;
+                stride3 = s3;
+            }
+            public int this[int key]
+            {
+                get
+                {
+                    switch (key)
+                    {
+                        case 0: return stride0;
+                        case 1: return stride1;
+                        case 2: return stride2;
+                        case 3: return stride3;
+                        default: return 0;
+                    }
+                }
+
+                set
+                {
+                    switch (key)
+                    {
+                        case 0: stride0 = value; break;
+                        case 1: stride1 = value; break;
+                        case 2: stride2 = value; break;
+                        case 3: stride3 = value; break;
+                    }
+                }
+            }
+
+            public int Length { get; private set; }
+        }
+
+        public int Width { get; }
+        public int Height { get; }
+        public StrideSet Stride { get; }
+        public ImageFormat Format { get; }
+        public Rotation Rotation { get; set; }
+        public Flip Flip { get; set; }
+        public ImageBufferInfo(int width, int height, StrideSet stride, ImageFormat format)
+        {
+            Width = width;
+            Height = height;
+            Stride = stride;
+            Format = format;
+            Rotation = Rotation.Rotate0;
+            Flip = Flip.None;
+        }
+    }
+
+    public class ImageBufferNative
+    {
+        [StructLayout(LayoutKind.Sequential)] // the struct instance may be used where IntPtr[] expected by native method (does not work on Mac, so we use intermediate IntPtr[] to pass planes)
+        public struct PlaneSet
+        {
+            private IntPtr plane0;
+            private IntPtr plane1;
+            private IntPtr plane2;
+            private IntPtr plane3;
+
+            public PlaneSet(int length, IntPtr p0 = default(IntPtr), IntPtr p1 = default(IntPtr), IntPtr p2 = default(IntPtr), IntPtr p3 = default(IntPtr))
+            {
+                Length = length;
+                plane0 = p0;
+                plane1 = p1;
+                plane2 = p2;
+                plane3 = p3;
+            }
+            public IntPtr this[int key]
+            {
+                get
+                {
+                    switch (key)
+                    {
+                        case 0: return plane0;
+                        case 1: return plane1;
+                        case 2: return plane2;
+                        case 3: return plane3;
+                        default: return IntPtr.Zero;
+                    }
+                }
+
+                set
+                {
+                    switch (key)
+                    {
+                        case 0: plane0 = value; break;
+                        case 1: plane1 = value; break;
+                        case 2: plane2 = value; break;
+                        case 3: plane3 = value; break;
+                    }
+                }
+            }
+
+            public int Length { get; private set; }
+        }
+
+        public ImageBufferNative(ImageBufferInfo info)
+        {
+            Info = info;
+            Planes = new PlaneSet(info.Stride.Length);
+        }
+
+        public ImageBufferNative(IntPtr buf, int width, int height, int stride, ImageFormat imageFormat)
+        {
+            Info = new ImageBufferInfo(width, height, new ImageBufferInfo.StrideSet(1, stride), imageFormat);
+            Planes = new PlaneSet(1, buf);
+        }
+        public ImageBufferInfo Info;
+        public PlaneSet Planes; // operator[] setter does not compile if this member is a property (because [] applies to a copy of the property)
+
+        // Release resources for dispose or reuse.
+        public virtual void Release() { }
+        public virtual void Dispose() { }
+
+    }
+
+    // Allocates native buffers for planes
+    // Supports releasing to image pool with allocation reuse
+    public class ImageBufferNativeAlloc : ImageBufferNative, IDisposable
+    {
+        ImageBufferNativePool<ImageBufferNativeAlloc> pool;
+        public ImageBufferNativeAlloc(ImageBufferNativePool<ImageBufferNativeAlloc> pool, ImageBufferInfo info) : base(info)
+        {
+            this.pool = pool;
+            
+            for (int i = 0; i < info.Stride.Length; i++)
+            {
+                Planes[i] = Marshal.AllocHGlobal(info.Stride[i] * info.Height);
+            }
+        }
+
+        public override void Release()
+        {
+            if (pool != null)
+            {
+                pool.Release(this);
+            }
+        }
+
+        public override void Dispose()
+        {
+            for (int i = 0; i < Info.Stride.Length; i++)
+            {
+                Marshal.FreeHGlobal(Planes[i]);
+            }
+        }
+    }
+
+    // Acquires byte[] plane via GHandle. Optimized for single plane images.
+    // Supports releasing to image pool after freeing GHandle (object itself reused only)
+    public class ImageBufferNativeGCHandleSinglePlane : ImageBufferNative, IDisposable
+    {
+        ImageBufferNativePool<ImageBufferNativeGCHandleSinglePlane> pool;
+        GCHandle planeHandle;
+        public ImageBufferNativeGCHandleSinglePlane(ImageBufferNativePool<ImageBufferNativeGCHandleSinglePlane> pool, ImageBufferInfo info) : base(info)
+        {
+            if (info.Stride.Length != 1)
+            {
+                throw new Exception("ImageBufferNativeGCHandleSinglePlane wrong plane count " + info.Stride.Length);
+            }
+            this.pool = pool;
+        }
+        public void PinPlane(byte[] plane)
+        {
+            planeHandle = GCHandle.Alloc(plane, GCHandleType.Pinned);
+            Planes[0] = planeHandle.AddrOfPinnedObject();
+        }
+
+        public override void Release()
+        {
+            planeHandle.Free();
+            if (pool != null)
+            {
+                pool.Release(this);
+            }
+        }
+
+        public override void Dispose()
+        {
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceCodec.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 7ebdb2c4bb62b814ab3d75f168ecf94e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceFramed.cs

@@ -0,0 +1,416 @@
+// -----------------------------------------------------------------------
+// <copyright file="VoiceFramed.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2017 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Photon data streaming support.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+#if DUMP_TO_FILE
+using System.IO;
+#endif
+using System.Threading;
+
+namespace Photon.Voice
+{
+    /// <summary>Audio Processor interface.</summary>
+    public interface IProcessor<T> : IDisposable
+    {
+        /// <summary>Process a frame of audio data.</summary>
+        /// <param name="buf">Buffer containing input audio data</param>
+        /// <returns>Buffer containing output audio data or null if frame has been discarded (VAD)</returns>
+        T[] Process(T[] buf);
+    }
+
+    /// <summary>Utility class to re-frame audio packets.</summary>
+    public class Framer<T>
+    {
+        T[] frame;
+
+        /// <summary>Create new Framer instance.</summary>
+        public Framer(int frameSize)
+        {
+            this.frame = new T[frameSize];
+            var x = new T[1];
+            if (x[0] is byte)
+                this.sizeofT = sizeof(byte);
+            else if (x[0] is short)
+                this.sizeofT = sizeof(short);
+            else if (x[0] is float)
+                this.sizeofT = sizeof(float);
+            else
+                throw new Exception("Input data type is not supported: " + x[0].GetType());
+
+        }
+        int sizeofT;
+        int framePos = 0;
+
+        /// <summary>Get the number of frames available after adding bufLen samples.</summary>
+        /// <param name="bufLen">Number of samples that would be added.</param>
+        /// <returns>Number of full frames available when adding bufLen samples.</returns>
+        public int Count(int bufLen)
+        {
+            return (bufLen + framePos) / frame.Length;
+        }
+
+        /// <summary>Append arbitrary-sized buffer and return available full frames.</summary>
+        /// <param name="buf">Array of samples to add.</param>
+        /// <returns>Enumerator of full frames (might be none).</returns>
+        public IEnumerable<T[]> Frame(T[] buf)
+        {
+            // quick return in trivial case
+            if (frame.Length == buf.Length && framePos == 0)
+            {
+                yield return buf;
+            }
+            else
+            {
+                var bufPos = 0;
+
+                while (frame.Length - framePos <= buf.Length - bufPos)
+                {
+                    var l = frame.Length - framePos;
+                    Buffer.BlockCopy(buf, bufPos * sizeofT, frame, framePos * sizeofT, l * sizeofT);
+                    //Console.WriteLine("=== Y {0} {1} -> {2} {3} ", bufPos, bufPos + l, sourceFramePos, sourceFramePos + l);
+                    bufPos += l;
+                    framePos = 0;
+
+                    yield return this.frame;
+                }
+                if (bufPos != buf.Length)
+                {
+                    var l = buf.Length - bufPos;
+                    Buffer.BlockCopy(buf, bufPos * sizeofT, frame, framePos * sizeofT, l * sizeofT);
+                    //Console.WriteLine("=== L {0} {1} -> {2} {3} ", bufPos, bufPos + l, sourceFramePos, sourceFramePos + l);
+                    framePos += l;
+                }
+            }
+        }
+    }
+
+    /// <summary>
+    /// Typed re-framing LocalVoice
+    /// </summary>
+    /// <remarks>Base class for typed re-framing LocalVoice implementation (<see cref="LocalVoiceFramed{T}"></see>) </remarks>
+    public class LocalVoiceFramedBase : LocalVoice
+    {
+        /// <summary>Data flow will be repacked to frames of this size. May differ from input voiceInfo.FrameSize. Processors should resample in this case.</summary>
+        public int FrameSize { get; private set; }
+
+        internal LocalVoiceFramedBase(VoiceClient voiceClient, IEncoder encoder, byte id, VoiceInfo voiceInfo, int channelId, int frameSize)
+        : base(voiceClient, encoder, id, voiceInfo, channelId)
+        {
+            this.FrameSize = frameSize;
+        }
+    }
+
+    /// <summary>
+    /// Typed re-framing LocalVoice
+    /// </summary>
+    /// <remarks>
+    /// Consumes data in array buffers of arbitrary length. Repacks them in frames of constant length for further processing and encoding.
+    /// </remarks>
+    public class LocalVoiceFramed<T> : LocalVoiceFramedBase
+    {
+        Framer<T> framer;
+#if DUMP_TO_FILE
+        FileStream file;
+        static int fileCnt = 0;
+#endif
+        // Optionally process input data. 
+        // Should return arrays exactly of info.FrameSize size or null to skip sending
+        protected T[] processFrame(T[] buf)
+        {
+            lock (this.processors)
+            {
+                foreach (var p in processors)
+                {
+                    buf = p.Process(buf);
+                    if (buf == null)
+                    {
+                        break;
+                    }
+                }
+            }
+            return buf;
+        }
+
+        /// <summary>
+        /// Adds processors after any built-in processors and everything added with AddPreProcessor.
+        /// </summary>
+        /// <param name="processors"></param>
+        public void AddPostProcessor(params IProcessor<T>[] processors)
+        {
+            lock (this.processors)
+            {
+                foreach (var p in processors)
+                {
+                    this.processors.Add(p);
+                }
+            }
+        }
+
+        int preProcessorsCnt;
+
+        /// <summary>
+        /// Adds processors before built-in processors and everything added with AddPostProcessor.
+        /// </summary>
+        /// <param name="processors"></param>
+        public void AddPreProcessor(params IProcessor<T>[] processors)
+        {
+            lock (this.processors)
+            {
+                foreach (var p in processors)
+                {
+                    this.processors.Insert(preProcessorsCnt++, p);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Clears all processors in pipeline including built-in resampling.
+        /// User should add at least resampler processor after call.
+        /// </summary>
+        public void ClearProcessors()
+        {
+            lock (this.processors)
+            {
+                this.processors.Clear();
+                preProcessorsCnt = 0;
+            }
+        }
+
+        List<IProcessor<T>> processors = new List<IProcessor<T>>();
+
+        internal LocalVoiceFramed(VoiceClient voiceClient, IEncoder encoder, byte id, VoiceInfo voiceInfo, int channelId, int frameSize)
+        : base(voiceClient, encoder, id, voiceInfo, channelId, frameSize)
+		{
+#if DUMP_TO_FILE
+            file = File.Open("dump-" + fileCnt++ + ".raw", FileMode.Create);
+#endif
+			if (frameSize == 0)
+			{ 
+				throw new Exception(LogPrefix + ": non 0 frame size required for framed stream");
+			}
+			this.framer = new Framer<T>(FrameSize);
+
+            this.bufferFactory = new FactoryPrimitiveArrayPool<T>(DATA_POOL_CAPACITY, Name + " Data", FrameSize);
+        }
+
+        bool dataEncodeThreadStarted;
+        Queue<T[]> pushDataQueue = new Queue<T[]>();
+        AutoResetEvent pushDataQueueReady = new AutoResetEvent(false);
+
+        public FactoryPrimitiveArrayPool<T> BufferFactory { get { return bufferFactory; } }
+        FactoryPrimitiveArrayPool<T> bufferFactory;
+
+        /// <summary>Wether this LocalVoiceFramed has capacity for more data buffers to be pushed asynchronously.</summary>
+        public bool PushDataAsyncReady { get { lock (pushDataQueue) return pushDataQueue.Count < DATA_POOL_CAPACITY - 1; } } // 1 slot for buffer currently processed and not contained either by pool or queue
+
+        /// <summary>Asynchronously push data into this stream.</summary>
+        // Accepts array of arbitrary size. Automatically splits or aggregates input to buffers of length <see cref="FrameSize"></see>.
+        // Expects buf content to be preserved until PushData is called from a worker thread. Releases buffer to <see cref="BufferFactory"></see> then.
+        public void PushDataAsync(T[] buf)
+        {
+            if (disposed) return;
+
+#if PHOTON_VOICE_THREADING_DISABLE
+            PushData(buf);
+            return;
+#endif
+
+            if (!dataEncodeThreadStarted)
+            {
+                voiceClient.logger.LogInfo(LogPrefix + ": Starting data encode thread");
+#if NETFX_CORE
+                Windows.System.Threading.ThreadPool.RunAsync((x) =>
+                {
+                    PushDataAsyncThread();
+                });
+#else
+                var t = new Thread(PushDataAsyncThread);
+                t.Start();
+                Util.SetThreadName(t, "[PV] EncData " + shortName);
+#endif
+                dataEncodeThreadStarted = true;
+            }
+
+            // Caller should check this asap in general case if packet production is expensive.
+            // This is not the case For lightweight audio stream. Also overflow does not happen for audio stream normally.
+            // Make sure that queue is not too large even if caller missed the check.
+            if (this.PushDataAsyncReady)
+            {
+                lock (pushDataQueue)
+                {
+                    pushDataQueue.Enqueue(buf);
+                }
+                pushDataQueueReady.Set();
+            }
+            else
+            {
+                this.bufferFactory.Free(buf, buf.Length);
+                if (framesSkipped == framesSkippedNextLog)
+                {
+                    voiceClient.logger.LogWarning(LogPrefix + ": PushData queue overflow. Frames skipped: " + (framesSkipped + 1));
+                    framesSkippedNextLog = framesSkipped + 10;
+                }
+                framesSkipped++;
+            }
+        }
+        int framesSkippedNextLog;
+        int framesSkipped;
+        bool exitThread = false;
+        private void PushDataAsyncThread()
+        {
+
+//#if UNITY_5_3_OR_NEWER
+//            UnityEngine.Profiling.Profiler.BeginThreadProfiling("PhotonVoice", LogPrefix);
+//#endif
+
+            try
+            {
+                while (!exitThread)
+                {
+                    pushDataQueueReady.WaitOne(); // Wait until data is pushed to the queue or Dispose signals.
+
+//#if UNITY_5_3_OR_NEWER
+//                    UnityEngine.Profiling.Profiler.BeginSample("Encoder");
+//#endif
+
+                    while (true) // Dequeue and process while the queue is not empty
+                    {
+                        if (exitThread) break; // early exit to save few resources
+
+                        T[] b = null;
+                        lock (pushDataQueue)
+                        {
+                            if (pushDataQueue.Count > 0)
+                            {
+                                b = pushDataQueue.Dequeue();
+                            }
+                        }
+                        if (b != null)
+                        {
+                            PushData(b);
+                            this.bufferFactory.Free(b, b.Length);
+                        }
+                        else
+                        {
+                            break;
+                        }
+                    }
+
+//#if UNITY_5_3_OR_NEWER
+//                    UnityEngine.Profiling.Profiler.EndSample();
+//#endif
+
+                }
+            }
+            catch (Exception e)
+            {
+                voiceClient.logger.LogError(LogPrefix + ": Exception in encode thread: " + e);
+                throw e;
+            }
+            finally
+            {
+                Dispose();
+                this.bufferFactory.Dispose();
+
+#if NETFX_CORE
+                pushDataQueueReady.Dispose();
+#else
+                pushDataQueueReady.Close();
+#endif
+
+                voiceClient.logger.LogInfo(LogPrefix + ": Exiting data encode thread");
+
+//#if UNITY_5_3_OR_NEWER
+//                UnityEngine.Profiling.Profiler.EndThreadProfiling();
+//#endif
+
+            }
+        }
+
+
+        // counter for detection of first frame for which process() returned null
+        int processNullFramesCnt = 0;
+        /// <summary>Synchronously push data into this stream.</summary>
+        // Accepts array of arbitrary size. Automatically splits or aggregates input to buffers of length <see cref="FrameSize"></see>.
+        public void PushData(T[] buf)
+        {
+            if (this.voiceClient.transport.IsChannelJoined(this.channelId))
+            {
+                if (this.TransmitEnabled)
+                {
+                    if (this.encoder is IEncoderDirect<T[]>)
+                    {
+                        lock (disposeLock)
+                        {
+                            if (!disposed)
+                            {
+                                foreach (var framed in framer.Frame(buf))
+                                {
+                                    var processed = processFrame(framed);
+                                    if (processed != null)
+                                    {
+#if DUMP_TO_FILE
+                                        var b = new byte[processed.Length * sizeof(short)];
+                                        Buffer.BlockCopy(processed, 0, b, 0, b.Length);
+                                        file.Write(b, 0, b.Length);
+#endif
+                                        processNullFramesCnt = 0;
+                                        ((IEncoderDirect<T[]>)this.encoder).Input(processed);
+                                    }
+                                    else
+                                    {
+                                        processNullFramesCnt++;
+                                        if (processNullFramesCnt == 1)
+                                        {
+                                            this.encoder.EndOfStream();
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    else
+                    {
+                        throw new Exception(LogPrefix + ": PushData(T[]) called on encoder of unsupported type " + (this.encoder == null ? "null" : this.encoder.GetType().ToString()));
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Releases resources used by the <see cref="LocalVoiceFramed{T}"/> instance. 
+        /// Buffers used for asynchronous push will be disposed in encoder thread's 'finally'.
+        /// </summary>
+        public override void Dispose()
+        {
+#if DUMP_TO_FILE
+            file.Close();
+#endif
+            exitThread = true;
+            lock (disposeLock)
+            {
+                if (!disposed)
+                {
+                    lock (this.processors)
+                    {
+                        foreach (var p in processors)
+                        {
+                            p.Dispose();
+                        }
+                    }
+                    base.Dispose();
+                    pushDataQueueReady.Set(); // let worker exit
+                }
+            }
+            base.Dispose();
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceFramed.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ef70ab0e29cc1544896039f593d5a667
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceInfo.cs

@@ -0,0 +1,137 @@
+// -----------------------------------------------------------------------
+// <copyright file="VoiceInfo.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2017 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Photon data streaming support.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+using System.Collections.Generic;
+
+namespace Photon.Voice
+{
+	/// <summary>Describes stream properties.</summary>
+	public struct VoiceInfo
+    {
+        /// <summary>
+        /// Create stream info for an Opus audio stream.
+        /// </summary>
+        /// <param name="samplingRate">Audio sampling rate.</param>
+        /// <param name="channels">Number of channels.</param>
+        /// <param name="frameDurationUs">Uncompressed frame (audio packet) size in microseconds.</param>
+        /// <param name="bitrate">Stream bitrate (in bits/second).</param>
+        /// <param name="userdata">Optional user data. Should be serializable by Photon.</param>
+        /// <returns>VoiceInfo instance.</returns>
+        static public VoiceInfo CreateAudioOpus(POpusCodec.Enums.SamplingRate samplingRate, int channels, OpusCodec.FrameDuration frameDurationUs, int bitrate, object userdata = null)
+        {
+            return new VoiceInfo()
+            {
+                Codec = Codec.AudioOpus,
+                SamplingRate = (int)samplingRate,
+                Channels = channels,
+                FrameDurationUs = (int)frameDurationUs,
+                Bitrate = bitrate,
+                UserData = userdata
+            };
+        }
+		/// <summary>
+		/// Create stream info for an audio stream.
+		/// </summary>
+		/// <param name="codec">Audio codec.</param>
+		/// <param name="samplingRate">Audio sampling rate.</param>
+		/// <param name="channels">Number of channels.</param>
+		/// <param name="frameDurationUs">Uncompressed frame (audio packet) size in microseconds.</param>
+		/// <param name="userdata">Optional user data. Should be serializable by Photon.</param>
+		/// <returns>VoiceInfo instance.</returns>
+		static public VoiceInfo CreateAudio(Codec codec, int samplingRate, int channels, int frameDurationUs, object userdata = null)
+		{
+			return new VoiceInfo()
+			{
+				Codec = codec,
+				SamplingRate = (int)samplingRate,
+				Channels = channels,
+				FrameDurationUs = (int)frameDurationUs,
+				UserData = userdata
+			};
+		}
+
+#if PHOTON_VOICE_VIDEO_ENABLE
+        /// <summary>
+        /// Create stream info for a video stream.
+        /// </summary>
+        /// <param name="codec">Video codec.</param>
+        /// <param name="bitrate">Stream bitrate.</param>
+        /// <param name="width">Streamed video width. If 0, width and height of video source used (no rescaling).</param>
+        /// <param name="heigth">Streamed video height. If -1, aspect ratio preserved during rescaling.</param>
+        /// <param name="fps">Streamed video frames per second.</param>
+        /// <param name="keyFrameInt">Keyframes interval in frames.</param>/// 
+        /// <param name="userdata">Optional user data. Should be serializable by Photon.</param>        
+        /// <returns>VoiceInfo instance.</returns>
+        static public VoiceInfo CreateVideo(Codec codec, int bitrate, int width, int heigth, int fps, int keyFrameInt, object userdata = null)
+        {
+            return new VoiceInfo()
+            {
+                Codec = codec,
+                Bitrate = bitrate,
+                Width = width,
+                Height = heigth,
+                FPS = fps,
+                KeyFrameInt = keyFrameInt,
+                UserData = userdata,
+            };
+        }
+
+#endif
+        public override string ToString()
+        {
+            return "c=" + Codec + " f=" + SamplingRate + " ch=" + Channels + " d=" + FrameDurationUs + " s=" + FrameSize + " b=" + Bitrate + " w=" + Width + " h=" + Height + " fps=" + FPS + " kfi=" + KeyFrameInt + " ud=" + UserData;
+        }
+
+        public Codec Codec { get; set; }
+        /// <summary>Audio sampling rate (frequency, in Hz).</summary>
+        public int SamplingRate { get; set; }
+        /// <summary>Number of channels.</summary>
+        public int Channels { get; set; }
+        /// <summary>Uncompressed frame (audio packet) size in microseconds.</summary>
+        public int FrameDurationUs { get; set; }
+        /// <summary>Target bitrate (in bits/second).</summary>
+        public int Bitrate { get; set; }
+        /// <summary>Video width.</summary>
+        public int Width { get; set; }
+        /// <summary>Video height</summary>
+        public int Height { get; set; }
+        /// <summary>Video frames per second</summary>
+        public int FPS { get; set; }
+        /// <summary>Video keyframe interval in frames</summary>
+        public int KeyFrameInt { get; set; }
+        /// <summary>Optional user data. Should be serializable by Photon.</summary>
+        public object UserData { get; set; }
+
+        /// <summary>Uncompressed frame (data packet) size in samples.</summary>
+        public int FrameDurationSamples { get { return (int)(this.SamplingRate * (long)this.FrameDurationUs / 1000000); } }
+        /// <summary>Uncompressed frame (data packet) array size.</summary>
+        public int FrameSize { get { return this.FrameDurationSamples * this.Channels; } }        
+    }
+
+    /// <summary>Information about a remote voice (incoming stream).</summary>
+    public class RemoteVoiceInfo
+    {
+        internal RemoteVoiceInfo(int channelId, int playerId, byte voiceId, VoiceInfo info)
+        {
+            this.ChannelId = channelId;
+            this.PlayerId = playerId;
+            this.VoiceId = voiceId;
+            this.Info = info;
+        }
+        /// <summary>Remote voice info.</summary>
+        public VoiceInfo Info { get; private set; }
+        /// <summary>ID of channel used for transmission.</summary>
+        public int ChannelId { get; private set; }
+        /// <summary>Player ID of voice owner.</summary>
+        public int PlayerId { get; private set; }
+        /// <summary>Voice ID (unique in the room).</summary>
+        public byte VoiceId { get; private set; }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceInfo.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 8466257066e89eb4d9fd374d4c77e405
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceSourceAdapter.cs

@@ -0,0 +1,207 @@
+// -----------------------------------------------------------------------
+// <copyright file="VoiceSourceAdapter.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2017 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Photon data streaming support.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+using System;
+
+namespace Photon.Voice
+{
+    /// <summary>
+    /// Adapter base reading data from <see cref="IDataReader{T}.Read"></see> and pushing it to <see cref="LocalVoice"></see>.
+    /// </summary>
+    /// <remarks>
+    /// Use this with a LocalVoice of same T type.
+    /// </remarks>
+    public abstract class BufferReaderPushAdapterBase<T> : IServiceable
+    {
+        protected IDataReader<T> reader;
+
+        /// <summary>Do the actual data read/push.</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to.</param>
+        public abstract void Service(LocalVoice localVoice);
+
+        /// <summary>Create a new BufferReaderPushAdapterBase instance</summary>
+        /// <param name="reader">DataReader to read from.</param>
+        public BufferReaderPushAdapterBase(IDataReader<T> reader)
+        {
+            this.reader = reader;
+        }
+
+        /// <summary>Release resources associated with this instance.</summary>
+        public void Dispose()
+        {
+            this.reader.Dispose();
+        }
+    }
+
+    /// <summary>
+    /// Simple <see cref="BufferReaderPushAdapterBase{T}"></see> implementation using a single buffer and synchronous <see cref="LocalVoiceFramed{T}.PushData"></see>
+    /// </summary>
+    public class BufferReaderPushAdapter<T> : BufferReaderPushAdapterBase<T>
+    {
+        protected T[] buffer;
+
+        /// <summary>Create a new BufferReaderPushAdapter instance</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to.</param>
+        /// <param name="reader">DataReader to read from.</param>
+        public BufferReaderPushAdapter(LocalVoice localVoice, IDataReader<T> reader) : base(reader)
+        {
+            // any buffer will work but only of localVoice.FrameSize avoids additional processing
+            buffer = new T[((LocalVoiceFramed<T>)localVoice).FrameSize];
+        }
+
+        public override void Service(LocalVoice localVoice)
+        {
+            while (this.reader.Read(this.buffer))
+            {
+                ((LocalVoiceFramed<T>)localVoice).PushData(this.buffer);
+            }
+        }
+    }
+
+    /// <summary>
+    /// <see cref="BufferReaderPushAdapter{T}"></see> implementation using asynchronous <see cref="LocalVoiceFramed{T}.PushDataAsync"></see>.
+    /// </summary>
+    /// <remarks>
+    /// Acquires a buffer from pool before each Read, releases buffer after last Read (brings Acquire/Release overhead).
+    /// Expects localVoice to be a <see cref="LocalVoiceFramed{T}"></see> of same T.
+    /// </remarks>
+    public class BufferReaderPushAdapterAsyncPool<T> : BufferReaderPushAdapterBase<T>
+    {
+        /// <summary>Create a new BufferReaderPushAdapter instance</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to.</param>
+        /// <param name="reader">DataReader to read from.</param>
+        public BufferReaderPushAdapterAsyncPool(LocalVoice localVoice, IDataReader<T> reader) : base(reader) { }
+
+        /// <summary>Do the actual data read/push.</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to. Must be a <see cref="LocalVoiceFramed{T}"></see> of same T.</param>
+        public override void Service(LocalVoice localVoice)
+        {
+            var v = ((LocalVoiceFramed<T>)localVoice);
+            T[] buf = v.BufferFactory.New();
+            while (this.reader.Read(buf))
+            {
+                v.PushDataAsync(buf);
+                buf = v.BufferFactory.New();
+            }
+            // release unused buffer
+            v.BufferFactory.Free(buf, buf.Length);
+        }
+    }
+
+
+    /// <summary>
+    /// <see cref="BufferReaderPushAdapter{T}"></see> implementation using asynchronous <see cref="LocalVoiceFramed{T}.PushDataAsync(T[])"></see> and data copy.
+    /// </summary>
+    /// <remarks>
+    /// Reads data to preallocated buffer, copies it to buffer from pool before pushing.
+    /// Compared with <see cref="BufferReaderPushAdapterAsyncPool{T}"></see>, this avoids one pool Acquire/Release cycle at the cost
+    /// of a buffer copy.
+    /// Expects localVoice to be a <see cref="LocalVoiceFramed{T}"></see> of same T.
+    /// </remarks>
+    public class BufferReaderPushAdapterAsyncPoolCopy<T> : BufferReaderPushAdapterBase<T>
+    {
+        protected T[] buffer;
+
+        /// <summary>Create a new BufferReaderPushAdapter instance</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to.</param>
+        /// <param name="reader">DataReader to read from.</param>
+        public BufferReaderPushAdapterAsyncPoolCopy(LocalVoice localVoice, IDataReader<T> reader) : base(reader)
+        {
+            buffer = new T[((LocalVoiceFramedBase)localVoice).FrameSize];
+        }
+
+        /// <summary>Do the actual data read/push.</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to. Must be a <see cref="LocalVoiceFramed{T}"/> of same T.</param>
+        public override void Service(LocalVoice localVoice)
+        {
+            while (this.reader.Read(buffer))
+            {
+                var v = ((LocalVoiceFramed<T>)localVoice);
+                var buf = v.BufferFactory.New();
+                Array.Copy(buffer, buf, buffer.Length);
+                v.PushDataAsync(buf);
+            }
+        }
+    }
+
+    /// <summary>
+    /// <see cref="BufferReaderPushAdapter{T}"></see> implementation using asynchronous <see cref="LocalVoiceFramed{T}.PushDataAsync"></see>, converting float samples to short.
+    /// </summary>
+    /// <remarks>
+    /// This adapter works exactly like <see cref="BufferReaderPushAdapterAsyncPool{T}"></see>, but it converts float samples to short.
+    /// Acquires a buffer from pool before each Read, releases buffer after last Read.
+    /// 
+    /// Expects localVoice to be a <see cref="LocalVoiceFramed{T}"></see> of same T.
+    /// </remarks>
+    public class BufferReaderPushAdapterAsyncPoolFloatToShort : BufferReaderPushAdapterBase<float>
+    {
+        float[] buffer;
+
+        /// <summary>Create a new BufferReaderPushAdapter instance</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to.</param>
+        /// <param name="reader">DataReader to read from.</param>
+        public BufferReaderPushAdapterAsyncPoolFloatToShort(LocalVoice localVoice, IDataReader<float> reader) : base(reader)
+        {
+            buffer = new float[((LocalVoiceFramed<short>)localVoice).FrameSize];
+        }
+
+        /// <summary>Do the actual data read/push.</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to. Must be a <see cref="LocalVoiceFramed{T}"></see> of same T.</param>
+        public override void Service(LocalVoice localVoice)
+        {
+            var v = ((LocalVoiceFramed<short>)localVoice);
+            short[] buf = v.BufferFactory.New();
+            while (this.reader.Read(buffer))
+            {
+                AudioUtil.Convert(buffer, buf, buf.Length);
+                v.PushDataAsync(buf);
+                buf = v.BufferFactory.New();
+            }
+            // release unused buffer
+            v.BufferFactory.Free(buf, buf.Length);
+        }
+    }
+
+    /// <summary>
+    /// <see cref="BufferReaderPushAdapter{T}"></see> implementation using asynchronous <see cref="LocalVoiceFramed{T}.PushDataAsync"></see>, converting short samples to float.
+    /// </summary>
+    /// This adapter works exactly like <see cref="BufferReaderPushAdapterAsyncPool{T}"></see>, but it converts short samples to float.
+    /// Acquires a buffer from pool before each Read, releases buffer after last Read.
+    /// 
+    /// Expects localVoice to be a <see cref="LocalVoiceFramed{T}"></see> of same T.
+    public class BufferReaderPushAdapterAsyncPoolShortToFloat : BufferReaderPushAdapterBase<short>
+    {
+        short[] buffer;
+
+        /// <summary>Create a new BufferReaderPushAdapter instance</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to.</param>
+        /// <param name="reader">DataReader to read from.</param>
+        public BufferReaderPushAdapterAsyncPoolShortToFloat(LocalVoice localVoice, IDataReader<short> reader) : base(reader)
+        {
+            buffer = new short[((LocalVoiceFramed<float>)localVoice).FrameSize];
+        }
+
+        /// <summary>Do the actual data read/push.</summary>
+        /// <param name="localVoice">LocalVoice instance to push data to. Must be a <see cref="LocalVoiceFramed{T}"></see> of same T.</param>
+        public override void Service(LocalVoice localVoice)
+        {
+            var v = ((LocalVoiceFramed<float>)localVoice);
+            float[] buf = v.BufferFactory.New();
+            while (this.reader.Read(buffer))
+            {
+                AudioUtil.Convert(buffer, buf, buf.Length);
+                v.PushDataAsync(buf);
+                buf = v.BufferFactory.New();
+            }
+            // release unused buffer
+            v.BufferFactory.Free(buf, buf.Length);
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/VoiceSourceAdapter.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/WebRTCAudioProcessor.cs

@@ -0,0 +1,442 @@
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+#define DLL_IMPORT_INTERNAL
+#endif
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Threading;
+
+namespace Photon.Voice
+{
+    public class WebRTCAudioProcessor : WebRTCAudioLib, IProcessor<short>
+    {
+        const int REVERSE_BUFFER_POOL_CAPACITY = 50;
+
+        int reverseStreamDelayMs;
+        bool aec = false;
+        bool aecHighPass = true;
+        bool aecm = false;
+        bool highPass = false;
+        bool ns = false;
+        bool agc = true;
+        int agcCompressionGain = 9;
+        int agcTargetLevel = 3;
+        bool agc2 = false;
+        bool vad;
+
+        bool reverseStreamThreadRunning = false;
+        Queue<short[]> reverseStreamQueue = new Queue<short[]>();
+        AutoResetEvent reverseStreamQueueReady = new AutoResetEvent(false);
+        FactoryPrimitiveArrayPool<short> reverseBufferFactory;
+
+        public int AECStreamDelayMs { set { if (reverseStreamDelayMs != value) { reverseStreamDelayMs = value; if (proc != IntPtr.Zero) setParam(Param.REVERSE_STREAM_DELAY_MS, value); } } }
+        public bool AEC
+        {
+            set
+            {
+                if (aec != value)
+                {
+                    aec = value;
+                    InitReverseStream();
+                    if (proc != IntPtr.Zero) setParam(Param.AEC, aec ? 1 : 0);
+                    aecm = aec ? false : aecm;
+                }
+            }
+        }
+
+        public bool AECHighPass { set { if (aecHighPass != value) { aecHighPass = value; if (proc != IntPtr.Zero) setParam(Param.AEC_HIGH_PASS_FILTER, value ? 1 : 0); } } }
+
+        public bool AECMobile
+        {
+            set
+            {
+                if (aecm != value)
+                {
+                    aecm = value;
+                    InitReverseStream();
+                    if (proc != IntPtr.Zero) setParam(Param.AECM, aecm ? 1 : 0);
+                    aec = aecm ? false : aec;
+                }
+            }
+        }
+
+        public bool HighPass { set { if (highPass != value) { highPass = value; if (proc != IntPtr.Zero) setParam(Param.HIGH_PASS_FILTER, value ? 1 : 0); } } }
+        public bool NoiseSuppression { set { if (ns != value) { ns = value; if (proc != IntPtr.Zero) setParam(Param.NS, value ? 1 : 0); } } }
+        public bool AGC { set { if (agc != value) { agc = value; if (proc != IntPtr.Zero) setParam(Param.AGC, value ? 1 : 0); } } }
+        public int AGCCompressionGain
+        {
+            set
+            {
+                if (agcCompressionGain != value)
+                {
+                    if (value < 0 || value > 90)
+                    {
+                        logger.LogError("[PV] WebRTCAudioProcessor: new AGCCompressionGain value {0} not in range [0..90]", value);
+                    }
+                    else 
+                    { 
+                        agcCompressionGain = value;
+                        if (proc != IntPtr.Zero)
+                        {
+                            setParam(Param.AGC_COMPRESSION_GAIN, value);
+                        }
+                    }
+                }
+            }
+        }
+        public int AGCTargetLevel
+        {
+            set
+            {
+                if (agcTargetLevel != value)
+                {
+                    if (value > 31 || value < 0)
+                    {
+                        logger.LogError("[PV] WebRTCAudioProcessor: new AGCTargetLevel value {0} not in range [0..31]", value);
+                    }
+                    else
+                    {
+                        agcTargetLevel = value;
+                        if (proc != IntPtr.Zero)
+                            setParam(Param.AGC_TARGET_LEVEL_DBFS, value);
+                    }
+                }
+            }
+        }
+        public bool AGC2 { set { if (agc2 != value) { agc2 = value; if (proc != IntPtr.Zero) setParam(Param.AGC2, value ? 1 : 0); } } }
+        public bool VAD { set { if (vad != value) { vad = value; if (proc != IntPtr.Zero) setParam(Param.VAD, value ? 1 : 0); } } }
+        public bool Bypass
+        {
+            set
+            {
+                if (bypass != value) logger.LogInfo("[PV] WebRTCAudioProcessor: setting bypass=" + value);
+                bypass = value;
+            }
+            private get { return bypass; }
+        }
+        bool bypass = false;
+
+        int inFrameSize; // frames passed to Process
+        int processFrameSize; // frames passed to webrtc_audio_processor_process
+        int samplingRate; // input sampling rate (the same for Process and webrtc_audio_processor_process)
+        int channels;
+        IntPtr proc;
+        bool disposed;
+
+        Framer<float> reverseFramer;
+        int reverseSamplingRate;
+        int reverseChannels;
+        ILogger logger;
+
+        // audio parameters supported by webrtc
+        const int supportedFrameLenMs = 10;
+        public static readonly int[] SupportedSamplingRates = { 8000, 16000, 32000, 48000 };
+
+        public WebRTCAudioProcessor(ILogger logger, int frameSize, int samplingRate, int channels, int reverseSamplingRate, int reverseChannels)
+        {
+            bool ok = false;
+            foreach (var s in SupportedSamplingRates)
+            {
+                if (samplingRate == s)
+                {
+                    ok = true;
+                    break;
+                }
+            }
+            if (!ok)
+            {
+                logger.LogError("[PV] WebRTCAudioProcessor: input sampling rate ({0}) must be 8000, 16000, 32000 or 48000", samplingRate);
+                disposed = true;
+                return;
+            }
+
+            this.logger = logger;
+            this.inFrameSize = frameSize;
+            this.processFrameSize = samplingRate * supportedFrameLenMs / 1000;
+            if (this.inFrameSize / this.processFrameSize * this.processFrameSize != this.inFrameSize)
+            {
+                logger.LogError("[PV] WebRTCAudioProcessor: input frame size ({0} samples / {1} ms) must be equal to or N times more than webrtc processing frame size ({2} samples / 10 ms)", this.inFrameSize, 1000f * this.inFrameSize / samplingRate, processFrameSize);
+                disposed = true;
+                return;
+            }
+            this.samplingRate = samplingRate;
+            this.channels = channels;
+            this.reverseSamplingRate = reverseSamplingRate;
+            this.reverseChannels = reverseChannels;
+            this.proc = webrtc_audio_processor_create(samplingRate, channels, this.processFrameSize, samplingRate /* reverseSamplingRate to be converted */, reverseChannels);
+            webrtc_audio_processor_init(this.proc);
+            logger.LogInfo("[PV] WebRTCAudioProcessor create sampling rate {0}, channels{1}, frame size {2}, frame samples {3}, reverseChannels {4}", samplingRate, channels, this.processFrameSize, this.inFrameSize / this.channels, this.reverseChannels);
+        }
+
+        bool aecInited;
+        private void InitReverseStream()
+        {
+            lock (this)
+            {
+                if (!aecInited)
+                {
+                    if (disposed)
+                    {
+                        return;
+                    }
+
+                    int size = processFrameSize * reverseSamplingRate / samplingRate * reverseChannels;
+                    reverseFramer = new Framer<float>(size);
+                    reverseBufferFactory = new FactoryPrimitiveArrayPool<short>(REVERSE_BUFFER_POOL_CAPACITY, "WebRTCAudioProcessor Reverse Buffers", this.inFrameSize);
+
+                    logger.LogInfo("[PV] WebRTCAudioProcessor Init reverse stream: frame size {0}, reverseSamplingRate {1}, reverseChannels {2}", size, reverseSamplingRate, reverseChannels);
+
+                    if (!reverseStreamThreadRunning)
+                    {
+#if NETFX_CORE
+                        Windows.System.Threading.ThreadPool.RunAsync((x) =>
+                        {
+                            ReverseStreamThread();
+                        });
+#else
+                        var t = new Thread(ReverseStreamThread);
+                        t.Start();
+                        Util.SetThreadName(t, "[PV] WebRTCProcRevStream");
+#endif
+                    }
+
+                    if (reverseSamplingRate != samplingRate)
+                    {
+                        logger.LogWarning("[PV] WebRTCAudioProcessor AEC: output sampling rate {0} != {1} capture sampling rate. For better AEC, set audio source (microphone) and audio output samping rates to the same value.", reverseSamplingRate, samplingRate);
+                    }
+                    aecInited = true;
+                }
+            }
+        }
+
+        public short[] Process(short[] buf)
+        {
+            if (Bypass) return buf;
+            if (disposed) return buf;
+            if (proc == IntPtr.Zero) return buf;
+
+            if (buf.Length != this.inFrameSize)
+            {
+                this.logger.LogError("[PV] WebRTCAudioProcessor Process: frame size expected: {0}, passed: {1}", this.inFrameSize, buf);
+                return buf;
+            }
+            bool voiceDetected = false;
+            for (int offset = 0; offset < inFrameSize; offset += processFrameSize)
+            {
+                bool vd = true;
+                int err = webrtc_audio_processor_process(proc, buf, offset, out vd);
+                if (vd)
+                    voiceDetected = true;
+                if (lastProcessErr != err)
+                {
+                    lastProcessErr = err;
+                    this.logger.LogError("[PV] WebRTCAudioProcessor Process: webrtc_audio_processor_process() error {0}", err);
+                    return buf;
+                }
+            }
+            if (vad && !voiceDetected)
+            {
+                return null;
+            }
+            else
+            {
+                return buf;
+            }
+
+        }
+        int lastProcessErr = 0;
+        int lastProcessReverseErr = 0;
+
+        public void OnAudioOutFrameFloat(float[] data)
+        {
+            if (disposed) return;
+            if (!aecInited) return;
+            if (proc == IntPtr.Zero) return;
+            foreach (var reverseBufFloat in reverseFramer.Frame(data))
+            {
+                var reverseBuf = reverseBufferFactory.New();
+                if (reverseBufFloat.Length != reverseBuf.Length)
+                {
+                    AudioUtil.ResampleAndConvert(reverseBufFloat, reverseBuf, reverseBuf.Length, this.reverseChannels);
+                }
+                else
+                {
+                    AudioUtil.Convert(reverseBufFloat, reverseBuf, reverseBuf.Length);
+                }
+
+                lock (reverseStreamQueue)
+                {
+                    if (reverseStreamQueue.Count < REVERSE_BUFFER_POOL_CAPACITY - 1)
+                    {
+                        reverseStreamQueue.Enqueue(reverseBuf);
+                        reverseStreamQueueReady.Set();
+                    }
+                    else
+                    {
+                        this.logger.LogError("[PV] WebRTCAudioProcessor Reverse stream queue overflow");
+                        this.reverseBufferFactory.Free(reverseBuf);
+                    }
+                }
+            }
+        }
+
+        private void ReverseStreamThread()
+        {
+            logger.LogInfo("[PV] WebRTCAudioProcessor: Starting reverse stream thread");
+            reverseStreamThreadRunning = true;
+            try
+            {
+                while (!disposed)
+                {
+                    reverseStreamQueueReady.WaitOne(); // Wait until data is pushed to the queue or Dispose signals.
+
+                    //#if UNITY_5_3_OR_NEWER
+                    //                    UnityEngine.Profiling.Profiler.BeginSample("Encoder");
+                    //#endif
+
+                    while (true) // Dequeue and process while the queue is not empty
+                    {
+                        short[] reverseBuf = null;
+                        lock (reverseStreamQueue)
+                        {
+                            if (reverseStreamQueue.Count > 0)
+                            {
+                                reverseBuf = reverseStreamQueue.Dequeue();
+                            }
+                        }
+                        if (reverseBuf != null)
+                        {
+                            int err = webrtc_audio_processor_process_reverse(proc, reverseBuf, reverseBuf.Length);
+                            this.reverseBufferFactory.Free(reverseBuf);
+                            if (lastProcessReverseErr != err)
+                            {
+                                lastProcessReverseErr = err;
+                                this.logger.LogError("[PV] WebRTCAudioProcessor: OnAudioOutFrameFloat: webrtc_audio_processor_process_reverse() error {0}", err);
+                            }
+                        }
+                        else
+                        {
+                            break;
+                        }
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                this.logger.LogError("[PV] WebRTCAudioProcessor: ReverseStreamThread Exceptions: " + e);
+            }
+            finally
+            {
+                logger.LogInfo("[PV] WebRTCAudioProcessor: Exiting reverse stream thread");
+                reverseStreamThreadRunning = false;
+            }
+        }
+
+        private int setParam(Param param, int v)
+        {
+            if (disposed) return 0;
+            logger.LogInfo("[PV] WebRTCAudioProcessor: setting param " + param + "=" + v);
+            return webrtc_audio_processor_set_param(proc, (int)param, v);
+        }
+
+        public void Dispose()
+        {
+            lock (this)
+            {
+                if (!disposed)
+                {
+                    disposed = true;
+                    logger.LogInfo("[PV] WebRTCAudioProcessor: destroying...");
+                    reverseStreamQueueReady.Set();
+                    if (proc != IntPtr.Zero)
+                    {
+                        while (reverseStreamThreadRunning)
+                        {
+#if WINDOWS_UWP || ENABLE_WINMD_SUPPORT
+                            System.Threading.Tasks.Task.Delay(1).Wait();
+#else
+                            Thread.Sleep(1);
+#endif
+                        }
+                        webrtc_audio_processor_destroy(proc);
+                        logger.LogInfo("[PV] WebRTCAudioProcessor: destroyed");
+                    }
+                }
+            }
+        }
+    }
+
+    public class WebRTCAudioLib
+    {
+#if DLL_IMPORT_INTERNAL
+        const string lib_name = "__Internal";
+#else
+        const string lib_name = "webrtc-audio";
+#endif
+
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern IntPtr webrtc_audio_processor_create(int samplingRate, int channels, int frameSize, int revSamplingRate, int revChannels);
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern int webrtc_audio_processor_init(IntPtr proc);
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern int webrtc_audio_processor_set_param(IntPtr proc, int param, int v);
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern int webrtc_audio_processor_process(IntPtr proc, short[] buffer, int offset, out bool voiceDetected);
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern int webrtc_audio_processor_process_reverse(IntPtr proc, short[] buffer, int bufferSize);
+        [DllImport(lib_name, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+        public static extern void webrtc_audio_processor_destroy(IntPtr proc);
+
+        // library methods return webrtc error codes
+        public enum Error
+        {
+            // Fatal errors.
+            kNoError = 0,
+            kUnspecifiedError = -1,
+            kCreationFailedError = -2,
+            kUnsupportedComponentError = -3,
+            kUnsupportedFunctionError = -4,
+            kNullPointerError = -5,
+            kBadParameterError = -6,
+            kBadSampleRateError = -7,
+            kBadDataLengthError = -8,
+            kBadNumberChannelsError = -9,
+            kFileError = -10,
+            kStreamParameterNotSetError = -11,
+            kNotEnabledError = -12,
+
+            // Warnings are non-fatal.
+            // This results when a set_stream_ parameter is out of range. Processing
+            // will continue, but the parameter may have been truncated.
+            kBadStreamParameterWarning = -13
+        };
+
+        public enum Param
+        {
+            REVERSE_STREAM_DELAY_MS = 1,
+
+            AEC = 10,
+            AEC_HIGH_PASS_FILTER = 11,
+
+            AECM = 20,
+
+            HIGH_PASS_FILTER = 31,
+
+            NS = 41,
+            NS_LEVEL = 42,
+
+            AGC = 51,
+//            AGC_MODE = 52,
+            AGC_TARGET_LEVEL_DBFS = 55,
+            AGC_COMPRESSION_GAIN = 56,
+            AGC_LIMITER = 57,
+
+            VAD = 61,
+            VAD_FRAME_SIZE_MS = 62,
+            VAD_LIKELIHOOD = 63,
+
+            AGC2 = 71,
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/Core/WebRTCAudioProcessor.cs.meta

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+  serializedVersion: 2
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+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/LoadBalancingTransport.cs

@@ -0,0 +1,291 @@
+// -----------------------------------------------------------------------
+// <copyright file="LoadBalancingTransport.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2015 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Extends Photon Realtime API with media streaming functionality.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using ExitGames.Client.Photon;
+using Photon.Realtime;
+
+namespace Photon.Voice
+{
+    class VoiceEvent
+    {
+        /// <summary>
+        /// Single event used for voice communications.
+        /// </summary>
+        /// Change if it conflicts with other event codes used in the same Photon room.
+        public const byte Code = 202; // all photon voice events use single event code
+        public const byte FrameCode = 203; // LoadBalancingTransport2 uses separate code for frame event serialized as byte[]
+    }
+
+    /// <summary>
+    /// Extends LoadBalancingClient with media streaming functionality.
+    /// </summary>
+    /// <remarks>
+    /// Use your normal LoadBalancing workflow to join a Voice room. 
+    /// All standard LoadBalancing features are available.
+    /// Use <see cref="VoiceClient"/> to work with media streams.
+    /// </remarks>
+    public class LoadBalancingTransport : LoadBalancingClient, IVoiceTransport, ILogger, IDisposable
+    {
+        internal const int VOICE_CHANNEL = 0;
+
+        /// <summary>The <see cref="VoiceClient"></see> implementation associated with this LoadBalancingTransport.</summary>
+        public VoiceClient VoiceClient { get { return this.voiceClient; } }
+
+        protected VoiceClient voiceClient;
+        private PhotonTransportProtocol protocol;
+
+        public void LogError(string fmt, params object[] args) { this.DebugReturn(DebugLevel.ERROR, string.Format(fmt, args)); }
+        public void LogWarning(string fmt, params object[] args) { this.DebugReturn(DebugLevel.WARNING, string.Format(fmt, args)); }
+        public void LogInfo(string fmt, params object[] args) { this.DebugReturn(DebugLevel.INFO, string.Format(fmt, args)); }
+        public void LogDebug(string fmt, params object[] args) { this.DebugReturn(DebugLevel.ALL, string.Format(fmt, args)); }
+
+        // send different media type to different channels for efficiency
+        internal byte photonChannelForCodec(Codec c)
+        {
+            return (byte)(1 + Array.IndexOf(Enum.GetValues(typeof(Codec)), c));
+        }
+
+        public bool IsChannelJoined(int channelId) { return this.State == ClientState.Joined; }
+
+        /// <summary>
+        /// Initializes a new <see cref="LoadBalancingTransport"/>.
+        /// </summary>
+        /// <param name="logger">ILogger instance. If null, this instance LoadBalancingClient.DebugReturn implementation is used.<see cref="ConnectionProtocol"></see></param>
+        /// <param name="connectionProtocol">Connection protocol (UDP or TCP). <see cref="ConnectionProtocol"></see></param>
+        public LoadBalancingTransport(ILogger logger = null, ConnectionProtocol connectionProtocol = ConnectionProtocol.Udp) : base(connectionProtocol)
+        {
+            if (logger == null)
+            {
+                logger = this;
+            }
+            base.EventReceived += onEventActionVoiceClient;
+            base.StateChanged += onStateChangeVoiceClient;
+            this.voiceClient = new VoiceClient(this, logger);
+            var voiceChannelsCount = Enum.GetValues(typeof(Codec)).Length + 1; // channel per stream type, channel 0 is for user events
+            if (LoadBalancingPeer.ChannelCount < voiceChannelsCount)
+            {
+                this.LoadBalancingPeer.ChannelCount = (byte)voiceChannelsCount;
+            }
+            this.protocol = new PhotonTransportProtocol(voiceClient, logger);
+        }
+
+        /// <summary>
+        /// This method dispatches all available incoming commands and then sends this client's outgoing commands.
+        /// Call this method regularly (2 to 20 times a second).
+        /// </summary>
+        new public void Service()
+        {
+            base.Service();
+            this.voiceClient.Service();
+        }
+
+        [Obsolete("Use LoadBalancingPeer::OpChangeGroups().")]
+        public virtual bool ChangeAudioGroups(byte[] groupsToRemove, byte[] groupsToAdd)
+        {
+            return this.LoadBalancingPeer.OpChangeGroups(groupsToRemove, groupsToAdd);
+        }
+
+        [Obsolete("Use GlobalInterestGroup.")]
+        public byte GlobalAudioGroup
+        {
+            get { return GlobalInterestGroup; }
+            set { GlobalInterestGroup = value; }
+        }
+        /// <summary>
+        /// Set global interest group for this client. This call sets InterestGroup for existing local voices and for created later to given value.
+        /// Client set as listening to this group only until LoadBalancingPeer.OpChangeGroups() called. This method can be called any time.
+        /// </summary>
+        /// <see cref="LocalVoice.InterestGroup"/>
+        /// <see cref="LoadBalancingPeer.OpChangeGroups(byte[], byte[])"/>
+        public byte GlobalInterestGroup
+        {
+            get { return this.voiceClient.GlobalInterestGroup; }
+            set
+            {
+                this.voiceClient.GlobalInterestGroup = value;
+                if (this.State == ClientState.Joined)
+                {
+                    if (this.voiceClient.GlobalInterestGroup != 0)
+                    {
+                        this.LoadBalancingPeer.OpChangeGroups(new byte[0], new byte[] { this.voiceClient.GlobalInterestGroup });
+                    }
+                    else
+                    {
+                        this.LoadBalancingPeer.OpChangeGroups(new byte[0], null);
+                    }
+                }                
+            }
+        }
+
+
+        #region nonpublic
+
+        public void SendVoicesInfo(IEnumerable<LocalVoice> voices, int channelId, int targetPlayerId)
+        {
+            foreach (var codecVoices in voices.GroupBy(v => v.Info.Codec))
+            {
+                object content = protocol.buildVoicesInfo(codecVoices, true);
+
+                var sendOpt = new SendOptions()
+                {
+                    Reliability = true,
+                    Channel = photonChannelForCodec(codecVoices.Key),
+                };
+
+                var opt = new RaiseEventOptions();
+                if (targetPlayerId == -1)
+                {
+                    opt.TargetActors = new int[] { this.LocalPlayer.ActorNumber };
+                }
+                else if (targetPlayerId != 0)
+                {
+                    opt.TargetActors = new int[] { targetPlayerId };
+                }
+
+                this.OpRaiseEvent(VoiceEvent.Code, content, opt, sendOpt);
+            }
+        }
+
+        public void SendVoiceRemove(LocalVoice voice, int channelId, int targetPlayerId)
+        {
+            object content = protocol.buildVoiceRemoveMessage(voice);
+            var sendOpt = new SendOptions()
+            {
+                Reliability = true,
+                Channel = photonChannelForCodec(voice.Info.Codec),
+            };
+
+            var opt = new RaiseEventOptions();
+
+            if (targetPlayerId == -1)
+            {
+                opt.TargetActors = new int[] { this.LocalPlayer.ActorNumber };
+            }
+            else if (targetPlayerId != 0)
+            {
+                opt.TargetActors = new int[] { targetPlayerId };
+            }
+            if (voice.DebugEchoMode)
+            {
+                opt.Receivers = ReceiverGroup.All;
+            }
+
+            this.OpRaiseEvent(VoiceEvent.Code, content, opt, sendOpt);
+        }
+
+        public virtual void SendFrame(ArraySegment<byte> data, FrameFlags flags, byte evNumber, byte voiceId, int channelId, int targetPlayerId, bool reliable, LocalVoice localVoice)
+        {
+            object[] content = protocol.buildFrameMessage(voiceId, evNumber, data, flags);
+
+            var sendOpt = new SendOptions()
+            {
+                Reliability = reliable,
+                Channel = photonChannelForCodec(localVoice.Info.Codec),
+                Encrypt = localVoice.Encrypt
+            };
+
+            var opt = new RaiseEventOptions();
+            if (targetPlayerId == -1)
+            {
+                opt.TargetActors = new int[] { this.LocalPlayer.ActorNumber };
+            }
+            else if (targetPlayerId != 0)
+            {
+                opt.TargetActors = new int[] { targetPlayerId };
+            }
+            if (localVoice.DebugEchoMode)
+            {
+                opt.Receivers = ReceiverGroup.All;
+            }
+            opt.InterestGroup = localVoice.InterestGroup;
+
+            this.OpRaiseEvent(VoiceEvent.Code, content, opt, sendOpt);
+            while (this.LoadBalancingPeer.SendOutgoingCommands());
+        }
+
+        public string ChannelIdStr(int channelId) { return null; }
+        public string PlayerIdStr(int playerId) { return null; }
+
+        protected virtual void onEventActionVoiceClient(EventData ev)
+        {
+            // check for voice event first
+            if (ev.Code == VoiceEvent.Code)
+            {
+                // Payloads are arrays. If first array element is 0 than next is event subcode. Otherwise, the event is data frame with voiceId in 1st element.                    
+                protocol.onVoiceEvent(ev[(byte)ParameterCode.CustomEventContent], VOICE_CHANNEL, ev.Sender, ev.Sender == this.LocalPlayer.ActorNumber);
+            }
+            else
+            {
+                int playerId;
+                switch (ev.Code)
+                {
+                    case (byte)EventCode.Join:
+                        playerId = ev.Sender;
+                        if (playerId == this.LocalPlayer.ActorNumber)
+                        {
+                        }
+                        else
+                        {
+                            this.voiceClient.onPlayerJoin(VOICE_CHANNEL, playerId);                            
+                        }
+                        break;
+                    case (byte)EventCode.Leave:
+                        {
+                            playerId = ev.Sender;
+                            if (playerId == this.LocalPlayer.ActorNumber)
+                            {
+                                this.voiceClient.onLeaveAllChannels();
+                            }
+                            else
+                            {
+                                this.voiceClient.onPlayerLeave(VOICE_CHANNEL, playerId);
+                            }
+                        }
+                        break;
+                }
+            }
+        }
+
+        void onStateChangeVoiceClient(ClientState fromState, ClientState state)
+        {
+            switch (fromState)
+            {
+                case ClientState.Joined:
+                    this.voiceClient.onLeaveChannel(VOICE_CHANNEL);
+                    break;
+            }
+
+            switch (state)
+            {
+                case ClientState.Joined:
+                    this.voiceClient.onJoinChannel(VOICE_CHANNEL);
+                    if (this.voiceClient.GlobalInterestGroup != 0)
+                    {
+                        this.LoadBalancingPeer.OpChangeGroups(new byte[0], new byte[] { this.voiceClient.GlobalInterestGroup });
+                    }
+                    break;
+            }
+        }        
+
+        #endregion
+
+        /// <summary>
+        /// Releases all resources used by the <see cref="LoadBalancingTransport"/> instance.
+        /// </summary>
+        public void Dispose()
+        {
+            this.voiceClient.Dispose();
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/LoadBalancingTransport.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/LoadBalancingTransport2.cs

@@ -0,0 +1,128 @@
+// -----------------------------------------------------------------------
+// <copyright file="LoadBalancingTransport2.cs" company="Exit Games GmbH">
+//   Photon Voice API Framework for Photon - Copyright (C) 2020 Exit Games GmbH
+// </copyright>
+// <summary>
+//   Extends Photon Realtime API with audio streaming functionality.
+// </summary>
+// <author>developer@photonengine.com</author>
+// ----------------------------------------------------------------------------
+
+
+namespace Photon.Voice
+{
+    using System;
+    using ExitGames.Client.Photon;
+    using Realtime;
+
+
+    /// <summary>
+    /// Variant of LoadBalancingTransport. Aims to be non-alloc at the cost of breaking compatibility with older clients.
+    /// </summary>
+    public class LoadBalancingTransport2 : LoadBalancingTransport
+    {
+        public LoadBalancingTransport2(ILogger logger = null, ConnectionProtocol connectionProtocol = ConnectionProtocol.Udp) : base(logger, connectionProtocol)
+        {
+            this.LoadBalancingPeer.UseByteArraySlicePoolForEvents = true; // incoming byte[] events can be deserialized to a pooled ByteArraySlice
+            this.LoadBalancingPeer.ReuseEventInstance = true;             // this won't store references to the event anyways
+        }
+
+		const int DATA_OFFSET = 4;
+        public override void SendFrame(ArraySegment<byte> data, FrameFlags flags, byte evNumber, byte voiceId, int channelId, int targetPlayerId, bool reliable, LocalVoice localVoice)
+        {
+            // this uses a pooled slice, which is released within the send method (here RaiseEvent at the bottom)
+            ByteArraySlice frameData = this.LoadBalancingPeer.ByteArraySlicePool.Acquire(data.Count + DATA_OFFSET);
+            frameData.Buffer[0] = DATA_OFFSET;
+            frameData.Buffer[1] = voiceId;
+            frameData.Buffer[2] = evNumber;
+            frameData.Buffer[3] = (byte)flags;
+            Buffer.BlockCopy(data.Array, 0, frameData.Buffer, DATA_OFFSET, data.Count);
+            frameData.Count = data.Count + DATA_OFFSET; // need to set the count, as we manipulated the buffer directly
+
+            SendOptions sendOpt = new SendOptions() { Reliability = reliable, Channel = this.photonChannelForCodec(localVoice.Info.Codec), Encrypt = localVoice.Encrypt };
+
+            RaiseEventOptions opt = new RaiseEventOptions();
+            if (targetPlayerId == -1)
+            {
+                opt.TargetActors = new int[] { this.LocalPlayer.ActorNumber };
+            }
+            else if (targetPlayerId != 0)
+            {
+                opt.TargetActors = new int[] { targetPlayerId };
+            }
+            if (localVoice.DebugEchoMode)
+            {
+                opt.Receivers = ReceiverGroup.All;
+            }
+
+            opt.InterestGroup = localVoice.InterestGroup;
+
+            this.OpRaiseEvent(VoiceEvent.FrameCode, frameData, opt, sendOpt);
+
+            // each voice has it's own connection? else, we could aggregate voices data in less count of datagrams
+            while (this.LoadBalancingPeer.SendOutgoingCommands());
+        }
+
+
+        protected override void onEventActionVoiceClient(EventData ev)
+        {
+            if (ev.Code == VoiceEvent.FrameCode)
+            {
+                // Payloads are arrays. If first array element is 0 than next is event subcode. Otherwise, the event is data frame with voiceId in 1st element.
+                this.onVoiceFrameEvent(ev[(byte)ParameterCode.CustomEventContent], VOICE_CHANNEL, ev.Sender, this.LocalPlayer.ActorNumber);
+            }
+            else
+            {
+                base.onEventActionVoiceClient(ev);
+            }
+        }
+
+        internal void onVoiceFrameEvent(object content0, int channelId, int playerId, int localPlayerId)
+        {
+            byte[] content;
+            int contentLength;
+            int sliceOffset = 0;
+            ByteArraySlice slice = content0 as ByteArraySlice;
+            if (slice != null)
+            {
+                content = slice.Buffer;
+                contentLength = slice.Count;
+                sliceOffset = slice.Offset;
+            }
+            else
+            {
+                content = content0 as byte[];
+                contentLength = content.Length;
+            }
+
+            if (content == null || contentLength < 3)
+            {
+                this.LogError("[PV] onVoiceFrameEvent did not receive data (readable as byte[]) " + content0);
+            }
+            else
+            {
+                byte dataOffset = (byte)content[sliceOffset];
+                byte voiceId = (byte)content[sliceOffset + 1];
+                byte evNumber = (byte)content[sliceOffset + 2];
+                FrameFlags flags = 0;
+                if (dataOffset > 3)
+                {
+                    flags = (FrameFlags)content[3];
+                }
+
+                FrameBuffer buffer;
+                if (slice != null)
+                {
+                    buffer = new FrameBuffer(slice.Buffer, slice.Offset + dataOffset, contentLength - dataOffset, flags, slice);
+                }
+                else
+                {
+                    buffer = new FrameBuffer(content, dataOffset, contentLength - dataOffset, flags, null);
+                }
+                
+                this.voiceClient.onFrame(channelId, playerId, voiceId, evNumber, ref buffer, playerId == localPlayerId);
+                buffer.Release();
+            }
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/LoadBalancingTransport2.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/PhotonTransport.cs

@@ -0,0 +1,162 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Photon.Voice
+{
+    // for convenience, it also calls VoiceClient payload handlers
+    internal class PhotonTransportProtocol
+    {
+        enum EventSubcode : byte
+        {
+            VoiceInfo = 1,
+            VoiceRemove = 2,
+            Frame = 3,
+        }
+
+        enum EventParam : byte
+        {
+            VoiceId = 1,
+            SamplingRate = 2,
+            Channels = 3,
+            FrameDurationUs = 4,
+            Bitrate = 5,
+            Width = 6,
+            Height = 7,
+            FPS = 8,
+            KeyFrameInt = 9,
+            UserData = 10,
+            EventNumber = 11,
+            Codec = 12,
+        }
+
+        private VoiceClient voiceClient;
+        private ILogger logger;
+
+        public PhotonTransportProtocol(VoiceClient voiceClient, ILogger logger)
+        {
+            this.voiceClient = voiceClient;
+            this.logger = logger;
+        }
+
+        internal object[] buildVoicesInfo(IEnumerable<LocalVoice> voicesToSend, bool logInfo)
+        {
+            object[] infos = new object[voicesToSend.Count()];
+
+            object[] content = new object[] { (byte)0, EventSubcode.VoiceInfo, infos };
+            int i = 0;
+            foreach (var v in voicesToSend)
+            {
+                infos[i] = new Dictionary<byte, object>() {
+                    { (byte)EventParam.VoiceId, v.ID },
+                    { (byte)EventParam.Codec, v.Info.Codec },
+                    { (byte)EventParam.SamplingRate, v.Info.SamplingRate },
+                    { (byte)EventParam.Channels, v.Info.Channels },
+                    { (byte)EventParam.FrameDurationUs, v.Info.FrameDurationUs },
+                    { (byte)EventParam.Bitrate, v.Info.Bitrate },
+                    { (byte)EventParam.Width, v.Info.Width },
+                    { (byte)EventParam.Height, v.Info.Height },
+                    { (byte)EventParam.FPS, v.Info.FPS },
+                    { (byte)EventParam.KeyFrameInt, v.Info.KeyFrameInt },
+                    { (byte)EventParam.UserData, v.Info.UserData },
+                    { (byte)EventParam.EventNumber, v.EvNumber }
+                };
+                i++;
+
+                if (logInfo)
+                {
+                    logger.LogInfo(v.LogPrefix + " Sending info: " + v.Info.ToString() + " ev=" + v.EvNumber);
+                }
+            }
+            return content;
+        }
+
+        internal object[] buildVoiceRemoveMessage(LocalVoice v)
+        {
+            byte[] ids = new byte[] { v.ID };
+
+            object[] content = new object[] { (byte)0, EventSubcode.VoiceRemove, ids };
+
+            logger.LogInfo(v.LogPrefix + " remove sent");
+
+            return content;
+        }
+
+        internal object[] buildFrameMessage(byte voiceId, byte evNumber, ArraySegment<byte> data, FrameFlags flags)
+        {
+            return new object[] { voiceId, evNumber, data, (byte)flags };
+        }
+
+        // isLocalPlayer is required only for VoiceClient.RoundTripTime calculation
+        internal void onVoiceEvent(object content0, int channelId, int playerId, bool isLocalPlayer)
+        {
+            object[] content = (object[])content0;
+            if ((byte)content[0] == (byte)0)
+            {
+                switch ((byte)content[1])
+                {
+                    case (byte)EventSubcode.VoiceInfo:
+                        this.onVoiceInfo(channelId, playerId, content[2]);
+                        break;
+                    case (byte)EventSubcode.VoiceRemove:
+                        this.onVoiceRemove(channelId, playerId, content[2]);
+                        break;
+                    default:
+                        logger.LogError("[PV] Unknown sevent subcode " + content[1]);
+                        break;
+                }
+            }
+            else
+            {
+                byte voiceId = (byte)content[0];
+                byte evNumber = (byte)content[1];
+                byte[] receivedBytes = (byte[])content[2];
+                FrameFlags flags = 0;
+                if (content.Length > 3)
+                {
+                    flags = (FrameFlags)content[3];
+                }
+                var buffer = new FrameBuffer(receivedBytes, flags);
+                this.voiceClient.onFrame(channelId, playerId, voiceId, evNumber, ref buffer, isLocalPlayer);
+                buffer.Release();
+            }
+        }
+
+        private void onVoiceInfo(int channelId, int playerId, object payload)
+        {
+            foreach (var el in (object[])payload)
+            {
+                var h = (Dictionary<byte, Object>)el;
+                var voiceId = (byte)h[(byte)EventParam.VoiceId];
+                var eventNumber = (byte)h[(byte)EventParam.EventNumber];
+                var info = createVoiceInfoFromEventPayload(h);
+                voiceClient.onVoiceInfo(channelId, playerId, voiceId, eventNumber, info);
+            }
+        }
+
+        private void onVoiceRemove(int channelId, int playerId, object payload)
+        {
+            var voiceIds = (byte[])payload;
+            voiceClient.onVoiceRemove(channelId, playerId, voiceIds);
+        }
+
+        private VoiceInfo createVoiceInfoFromEventPayload(Dictionary<byte, object> h)
+        {
+            var i = new VoiceInfo();
+            i.Codec = (Codec)h[(byte)EventParam.Codec];
+            i.SamplingRate = (int)h[(byte)EventParam.SamplingRate];
+            i.Channels = (int)h[(byte)EventParam.Channels];
+            i.FrameDurationUs = (int)h[(byte)EventParam.FrameDurationUs];
+            i.Bitrate = (int)h[(byte)EventParam.Bitrate];
+            // check to keep compatibility with old clients
+            if (h.ContainsKey((byte)EventParam.Width)) i.Width = (int)h[(byte)EventParam.Width];
+            if (h.ContainsKey((byte)EventParam.Height)) i.Height = (int)h[(byte)EventParam.Height];
+            if (h.ContainsKey((byte)EventParam.FPS)) i.FPS = (int)h[(byte)EventParam.FPS];
+            if (h.ContainsKey((byte)EventParam.KeyFrameInt)) i.KeyFrameInt = (int)h[(byte)EventParam.KeyFrameInt];
+            i.UserData = h[(byte)EventParam.UserData];
+
+            return i;
+        }
+    }
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/PhotonTransport.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/PhotonVoice.API.asmdef

@@ -0,0 +1,10 @@
+{
+    "name": "PhotonVoice.API",
+    "references": [
+        "PhotonRealtime"
+    ],
+    "optionalUnityReferences": [],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": true
+}

Assets/Photon/PhotonVoice/PhotonVoiceApi/PhotonVoice.API.asmdef.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSAudioInChangeNotifier.cs

@@ -0,0 +1,77 @@
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.MacOS
+{
+    public class AudioInChangeNotifier : IAudioInChangeNotifier
+    {
+        public bool IsSupported => true;
+
+        const string lib_name = "AudioIn";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreateChangeNotifier(int instanceID, Action<int> callback);
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_DestroyChangeNotifier(IntPtr handle);
+
+        private delegate void CallbackDelegate(int instanceID);
+
+        IntPtr handle;
+        int instanceID;
+        Action callback;
+
+        public AudioInChangeNotifier(Action callback, ILogger logger)
+        {
+            this.callback = callback;
+            //nativeCallback(8888);
+            var handle = Photon_Audio_In_CreateChangeNotifier(instanceCnt, nativeCallback);
+            lock (instancePerHandle)
+            {
+                this.handle = handle;
+                this.instanceID = instanceCnt;
+                instancePerHandle.Add(instanceCnt++, this);
+            }
+        }
+
+        // IL2CPP does not support marshaling delegates that point to instance methods to native code.
+        // Using static method and per instance table.
+        static int instanceCnt;
+        private static Dictionary<int, AudioInChangeNotifier> instancePerHandle = new Dictionary<int, AudioInChangeNotifier>();
+        [MonoPInvokeCallbackAttribute(typeof(CallbackDelegate))]
+        private static void nativeCallback(int instanceID)
+        {
+            AudioInChangeNotifier instance;
+            bool ok;
+            lock (instancePerHandle)
+            {
+                ok = instancePerHandle.TryGetValue(instanceID, out instance);
+            }
+            if (ok)
+            {
+                instance.callback();
+            }
+        }
+
+        /// <summary>If not null, the enumerator is in invalid state.</summary>
+        public string Error { get; private set; }
+
+        /// <summary>Disposes enumerator.
+        /// Call it to free native resources.
+        /// </summary>
+        public void Dispose()
+        {
+            lock (instancePerHandle)
+            {
+                instancePerHandle.Remove(instanceID);
+            }
+            if (handle != IntPtr.Zero)
+            {
+                Photon_Audio_In_DestroyChangeNotifier(handle);
+                handle = IntPtr.Zero;
+            }
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSAudioInChangeNotifier.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSAudioInPusher.cs

@@ -0,0 +1,96 @@
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.MacOS
+{
+    public class MonoPInvokeCallbackAttribute : System.Attribute
+    {
+        private Type type;
+        public MonoPInvokeCallbackAttribute(Type t) { type = t; }
+    }
+
+    public class AudioInPusher : IAudioPusher<float>
+    {
+        const string lib_name = "AudioIn";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreatePusher(int instanceID, int deviceID, Action<int, IntPtr, int> pushCallback);
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_Destroy(IntPtr handler);
+
+        private delegate void CallbackDelegate(int instanceID, IntPtr buf, int len);
+
+        public AudioInPusher(int deviceID, ILogger logger)
+        {
+            this.deviceID = deviceID;
+            try
+            {
+                handle = Photon_Audio_In_CreatePusher(instanceCnt, deviceID, nativePushCallback);
+                instancePerHandle.Add(instanceCnt++, this);
+            }
+            catch (Exception e)
+            {
+                Error = e.ToString();
+                if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                {
+                    Error = "Exception in AudioInPusher constructor";
+                }
+                logger.LogError("[PV] AudioInPusher: " + Error);
+            }
+        }
+
+        private int deviceID;
+        // IL2CPP does not support marshaling delegates that point to instance methods to native code.
+        // Using static method and per instance table.
+        static int instanceCnt;
+        private static Dictionary<int, AudioInPusher> instancePerHandle = new Dictionary<int, AudioInPusher>();
+        [MonoPInvokeCallbackAttribute(typeof(CallbackDelegate))]
+        private static void nativePushCallback(int instanceID, IntPtr buf, int len)
+        {
+            AudioInPusher instance;
+            if (instancePerHandle.TryGetValue(instanceID, out instance))
+            {
+                instance.push(buf, len);
+            }
+        }
+
+        IntPtr handle;
+        Action<float[]> pushCallback;
+        ObjectFactory<float[], int> bufferFactory;
+
+        // Supposed to be called once at voice initialization.
+        // Otherwise recreate native object (instead of adding 'set callback' method to native interface)
+        public void SetCallback(Action<float[]> callback, ObjectFactory<float[], int> bufferFactory)
+        {
+            this.bufferFactory = bufferFactory;
+            this.pushCallback = callback;
+        }
+        private void push(IntPtr buf, int len)
+        {            
+            if (this.pushCallback != null)
+            {
+                var bufManaged = bufferFactory.New(len);
+                Marshal.Copy(buf, bufManaged, 0, len);
+                pushCallback(bufManaged);
+            }
+        }
+
+        public int Channels { get { return 1; } }
+
+		public int SamplingRate { get { return 44100; } }
+
+        public string Error { get; private set; }
+
+        public void Dispose()
+        {
+            if (handle != IntPtr.Zero)
+            {
+                Photon_Audio_In_Destroy(handle);
+                handle = IntPtr.Zero;
+            }
+            // TODO: Remove this from instancePerHandle
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSAudioInPusher.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSAudioInReader.cs

@@ -0,0 +1,56 @@
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+using System;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.MacOS
+{
+    public class AudioInReader : IAudioReader<float>
+    {
+        const string lib_name = "AudioIn";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreateReader(int deviceID);
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_Destroy(IntPtr handler);
+        [DllImport(lib_name)]
+        private static extern bool Photon_Audio_In_Read(IntPtr handle, float[] buf, int len);
+
+        IntPtr audioIn;
+
+        public AudioInReader(int deviceID, ILogger logger)
+        {
+            try
+            {
+                audioIn = Photon_Audio_In_CreateReader(deviceID);
+            }
+            catch (Exception e)
+            {
+                Error = e.ToString();
+                if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                {
+                    Error = "Exception in AudioInReader constructor";
+                }
+                logger.LogError("[PV] AudioInReader: " + Error);
+            }
+        }
+        public int Channels { get { return 1; } }
+
+        public int SamplingRate { get { return 44100; } }
+
+        public string Error { get; private set; }
+
+        public void Dispose()
+        {
+            if (audioIn != IntPtr.Zero)
+            {
+                Photon_Audio_In_Destroy(audioIn);
+                audioIn = IntPtr.Zero;
+            }
+        }
+
+        public bool Read(float[] buf)
+        {
+            return audioIn != IntPtr.Zero && Photon_Audio_In_Read(audioIn, buf, buf.Length);
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSAudioInReader.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSDeviceEnumerator.cs

@@ -0,0 +1,70 @@
+#if UNITY_EDITOR_OSX || UNITY_STANDALONE_OSX
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.MacOS
+{
+    /// <summary>Enumerates microphones available on device.
+    /// </summary>
+    public class AudioInEnumerator : DeviceEnumeratorBase
+    {
+        const string lib_name = "AudioIn";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreateMicEnumerator();
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_DestroyMicEnumerator(IntPtr handle);
+        [DllImport(lib_name)]
+        private static extern int Photon_Audio_In_MicEnumerator_Count(IntPtr handle);
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_MicEnumerator_NameAtIndex(IntPtr handle, int idx);
+        [DllImport(lib_name)]
+        private static extern int Photon_Audio_In_MicEnumerator_IDAtIndex(IntPtr handle, int idx);
+
+        IntPtr handle;
+        public AudioInEnumerator(ILogger logger) : base(logger)
+        {
+            Refresh();
+        }
+
+        /// <summary>Refreshes the microphones list.
+        /// </summary>
+        public override void Refresh()
+        {
+            Dispose();
+            try
+            {
+                handle = Photon_Audio_In_CreateMicEnumerator();
+                var count = Photon_Audio_In_MicEnumerator_Count(handle);
+                devices = new List<DeviceInfo>();
+                for (int i = 0; i < count; i++)
+                {
+                    devices.Add(new DeviceInfo(Photon_Audio_In_MicEnumerator_IDAtIndex(handle, i), Marshal.PtrToStringAuto(Photon_Audio_In_MicEnumerator_NameAtIndex(handle, i))));
+                }
+                Error = null;
+            }
+            catch (Exception e)
+            {
+                Error = e.ToString();
+                if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                {
+                    Error = "Exception in AudioInEnumerator.Refresh()";
+                }
+            }
+        }
+
+        /// <summary>Disposes enumerator.
+        /// Call it to free native resources.
+        /// </summary>
+        public override void Dispose()
+        {
+            if (handle != IntPtr.Zero && Error == null)
+            {
+                Photon_Audio_In_DestroyMicEnumerator(handle);
+                handle = IntPtr.Zero;
+            }
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/MacOSDeviceEnumerator.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioInChangeNotifier.cs

@@ -0,0 +1,83 @@
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.IOS
+{
+    public class AudioInChangeNotifier : IAudioInChangeNotifier
+    {
+        public bool IsSupported => true;
+
+        const string lib_name = "__Internal";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreateChangeNotifier(int instanceID, Action<int> callback);
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_DestroyChangeNotifier(IntPtr handle);
+
+        private delegate void CallbackDelegate(int instanceID);
+
+        IntPtr handle;
+        int instanceID;
+        Action callback;
+
+        public AudioInChangeNotifier(Action callback, ILogger logger)
+        {
+            this.callback = callback;
+            var handle = Photon_Audio_In_CreateChangeNotifier(instanceCnt, nativeCallback);
+            lock (instancePerHandle)
+            {
+                this.handle = handle;
+                this.instanceID = instanceCnt;
+                instancePerHandle.Add(instanceCnt++, this);
+            }
+        }
+
+        public class MonoPInvokeCallbackAttribute : System.Attribute
+        {
+            private Type type;
+            public MonoPInvokeCallbackAttribute(Type t) { type = t; }
+        }
+
+        // IL2CPP does not support marshaling delegates that point to instance methods to native code.
+        // Using static method and per instance table.
+        static int instanceCnt;
+        private static Dictionary<int, AudioInChangeNotifier> instancePerHandle = new Dictionary<int, AudioInChangeNotifier>();
+        [MonoPInvokeCallbackAttribute(typeof(CallbackDelegate))]
+        private static void nativeCallback(int instanceID)
+        {
+            AudioInChangeNotifier instance;
+            bool ok;
+            lock (instancePerHandle)
+            {
+                ok = instancePerHandle.TryGetValue(instanceID, out instance);
+            }
+            if (ok)
+            {
+                instance.callback();
+            }
+        }
+
+        /// <summary>If not null, the enumerator is in invalid state.</summary>
+        public string Error { get; private set; }
+
+        /// <summary>Disposes enumerator.
+        /// Call it to free native resources.
+        /// </summary>
+        public void Dispose()
+        {
+            lock (instancePerHandle)
+            {
+                instancePerHandle.Remove(instanceID);
+            }
+            if (handle != IntPtr.Zero)
+            {
+                Photon_Audio_In_DestroyChangeNotifier(handle);
+                handle = IntPtr.Zero;
+            }
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioInChangeNotifier.cs.meta

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Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioInPusher.cs

@@ -0,0 +1,139 @@
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+using System;
+using System.Threading;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.IOS
+{
+    public class MonoPInvokeCallbackAttribute : System.Attribute
+    {
+        private Type type;
+        public MonoPInvokeCallbackAttribute(Type t) { type = t; }
+    }
+
+    public class AudioInPusher : IAudioPusher<float>, IResettable
+    {
+        const string lib_name = "__Internal";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreatePusher(int instanceID, Action<int, IntPtr, int> pushCallback, int sessionCategory, int sessionMode, int sessionCategoryOptions);
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_Reset(IntPtr handler);
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_Destroy(IntPtr handler);
+
+        private delegate void CallbackDelegate(int instanceID, IntPtr buf, int len);
+        private bool initializationFinished;
+
+        public AudioInPusher(AudioSessionParameters sessParam, ILogger logger)
+        {
+            // initialization in a separate thread to avoid 0.5 - 1 sec. pauses in main thread execution
+            var t = new Thread(() =>
+            {
+                lock (instancePerHandle) // prevent concurrent initialization
+                {
+                    try
+                    {
+                        var handle = Photon_Audio_In_CreatePusher(instanceCnt, nativePushCallback, (int)sessParam.Category, (int)sessParam.Mode, sessParam.CategoryOptionsToInt());
+                        this.handle = handle;
+                        this.instanceID = instanceCnt;
+                        instancePerHandle.Add(instanceCnt++, this);
+                    }
+                    catch (Exception e)
+                    {
+                        Error = e.ToString();
+                        if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                        {
+                            Error = "Exception in AudioInPusher constructor";
+                        }
+                        logger.LogError("[PV] AudioInPusher: " + Error);
+                    }
+                    finally
+                    {
+                        initializationFinished = true;
+                    }
+                }
+            });
+            Util.SetThreadName(t, "[PV] IOSAudioInPusherCtr");
+            t.Start();
+        }
+
+        // IL2CPP does not support marshaling delegates that point to instance methods to native code.
+        // Using static method and per instance table.
+        static int instanceCnt;
+        private static Dictionary<int, AudioInPusher> instancePerHandle = new Dictionary<int, AudioInPusher>();
+        [MonoPInvokeCallbackAttribute(typeof(CallbackDelegate))]
+        private static void nativePushCallback(int instanceID, IntPtr buf, int len)
+        {
+            AudioInPusher instance;
+            bool ok;
+            lock (instancePerHandle)
+            {
+                ok = instancePerHandle.TryGetValue(instanceID, out instance);
+            }
+            if (ok)
+            {
+                instance.push(buf, len);
+            }
+        }
+
+        IntPtr handle;
+        int instanceID;
+        Action<float[]> pushCallback;
+        ObjectFactory<float[], int> bufferFactory;
+
+        // Supposed to be called once at voice initialization.
+        // Otherwise recreate native object (instead of adding 'set callback' method to native interface)
+        public void SetCallback(Action<float[]> callback, ObjectFactory<float[], int> bufferFactory)
+        {
+            this.bufferFactory = bufferFactory;
+            this.pushCallback = callback;            
+        }
+        private void push(IntPtr buf, int len)
+        {            
+            if (this.pushCallback != null)
+            {
+                var bufManaged = bufferFactory.New(len);
+                Marshal.Copy(buf, bufManaged, 0, len);
+                pushCallback(bufManaged);
+            }
+        }
+
+        public int Channels { get { return 1; } }
+
+        public int SamplingRate { get { return 48000; } }
+
+        public string Error { get; private set; }
+
+        public void Reset()
+        {
+            lock (instancePerHandle)
+            {
+                if (handle != IntPtr.Zero)
+                {
+                    Photon_Audio_In_Reset(handle);
+                }
+            }
+        }
+
+        public void Dispose()
+        {
+            lock (instancePerHandle)
+            {
+                instancePerHandle.Remove(instanceID);
+
+                while (!initializationFinished) // should never happen because of lock if the thread in constructor started before Dispose() call
+                {
+                    Thread.Sleep(1);
+                }
+
+                if (handle != IntPtr.Zero)
+                {
+                    Photon_Audio_In_Destroy(handle);
+                    handle = IntPtr.Zero;
+                }
+            }
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioInPusher.cs.meta

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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioInReader.cs

@@ -0,0 +1,96 @@
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+using System;
+using System.Threading;
+using System.Runtime.InteropServices;
+
+namespace Photon.Voice.IOS
+{
+    public class AudioInReader : IAudioReader<float>, IResettable
+    {
+        const string lib_name = "__Internal";
+        [DllImport(lib_name)]
+        private static extern IntPtr Photon_Audio_In_CreateReader(int sessionCategory, int sessionMode, int sessionCategoryOptions);
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_Reset(IntPtr handler);
+        [DllImport(lib_name)]
+        private static extern void Photon_Audio_In_Destroy(IntPtr handler);
+        [DllImport(lib_name)]
+        private static extern bool Photon_Audio_In_Read(IntPtr handle, float[] buf, int len);
+
+        IntPtr audioIn;
+        private bool initializationFinished;
+
+        public AudioInReader(AudioSessionParameters sessParam, ILogger logger)
+        {
+            // initialization in a separate thread to avoid 0.5 - 1 sec. pauses in main thread execution
+            var t = new Thread(() =>
+            {
+                lock (this)
+                {
+                    try
+                    {
+                        var audioIn = Photon_Audio_In_CreateReader((int)sessParam.Category, (int)sessParam.Mode, sessParam.CategoryOptionsToInt());
+                        lock (this)
+                        {
+                            this.audioIn = audioIn;
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        Error = e.ToString();
+                        if (Error == null) // should never happen but since Error used as validity flag, make sure that it's not null
+                        {
+                            Error = "Exception in AudioInReader constructor";
+                        }
+                        logger.LogError("[PV] AudioInReader: " + Error);
+                    }
+                    finally
+                    {
+                        initializationFinished = true;
+                    }
+                }
+            });
+            Util.SetThreadName(t, "[PV] IOSAudioInReaderCtr");
+            t.Start();
+        }
+        public int Channels { get { return 1; } }
+
+        public int SamplingRate { get { return 48000; } }
+
+        public string Error { get; private set; }
+
+        public void Reset()
+        {
+            lock (this)
+             {
+                if (audioIn != IntPtr.Zero)
+                {
+                    Photon_Audio_In_Reset(audioIn);
+                }
+            }
+        }
+
+        public void Dispose()
+        {
+            lock (this)
+            {
+                while (!initializationFinished) // should never happen because of lock if the thread in constructor started before Dispose() call
+                {
+                    Thread.Sleep(1);
+                }
+
+                if (audioIn != IntPtr.Zero)
+                {
+                    Photon_Audio_In_Destroy(audioIn);
+                    audioIn = IntPtr.Zero;
+                }
+            }
+        }
+
+        public bool Read(float[] buf)
+        {
+            return audioIn != IntPtr.Zero && Photon_Audio_In_Read(audioIn, buf, buf.Length);
+        }
+    }
+}
+#endif

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioInReader.cs.meta

@@ -0,0 +1,11 @@
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+guid: 7c99541283e96384ea52e265269b1dee
+MonoImporter:
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+  executionOrder: 0
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+  userData: 
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+  assetBundleVariant: 

Assets/Photon/PhotonVoice/PhotonVoiceApi/Platforms/Apple/iOSAudioSession.cs

@@ -0,0 +1,346 @@
+namespace Photon.Voice.IOS
+{
+    public enum AudioSessionCategory // values are the same as in AudioIn.mm enums
+    {
+        /// <summary>
+        /// Use this category for background sounds such as rain, car engine noise, etc.  
+        /// Mixes with other music.
+        /// </summary>
+        /// <remarks>API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);</remarks>
+        Ambient = 0,
+
+        /// <summary> Use this category for background sounds.  Other music will stop playing. </summary>
+        /// <remarks>API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);</remarks>
+        SoloAmbient = 1, 
+
+        /// <summary> Use this category for music tracks. </summary>
+        /// <remarks>API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);</remarks>
+        Playback = 2, 
+
+        /// <summary> Use this category when recording audio. </summary>
+        /// <remarks>API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);</remarks>
+        Record = 3,
+
+        /// <summary> Use this category when recording and playing back audio. </summary>
+        /// <remarks>API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);</remarks>
+        PlayAndRecord = 4,
+
+        /// <summary> Use this category when using a hardware codec or signal processor while
+        /// not playing or recording audio. </summary>
+        /// <remarks>API_DEPRECATED("No longer supported", ios(3.0, 10.0)) API_UNAVAILABLE(watchos, tvos) API_UNAVAILABLE(macos);</remarks>
+        AudioProcessing = 5,
+
+        /// <summary> Use this category to customize the usage of available audio accessories and built-in audio hardware.
+        ///  For example, this category provides an application with the ability to use an available USB output 
+        ///  and headphone output simultaneously for separate, distinct streams of audio data. Use of 
+        ///  this category by an application requires a more detailed knowledge of, and interaction with, 
+        ///  the capabilities of the available audio routes.  May be used for input, output, or both.
+        ///  Note that not all output types and output combinations are eligible for multi-route.  Input is limited
+        ///  to the last-in input port. Eligible inputs consist of the following:
+        ///     AVAudioSessionPortUSBAudio, AVAudioSessionPortHeadsetMic, and AVAudioSessionPortBuiltInMic.  
+        ///  Eligible outputs consist of the following: 
+        ///     AVAudioSessionPortUSBAudio, AVAudioSessionPortLineOut, AVAudioSessionPortHeadphones, AVAudioSessionPortHDMI, 
+        ///    and AVAudioSessionPortBuiltInSpeaker.  
+        ///  Note that AVAudioSessionPortBuiltInSpeaker is only allowed to be used when there are no other eligible 
+        ///  outputs connected. </summary>
+        /// <remarks>API_AVAILABLE(ios(6.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);</remarks>
+        MultiRoute = 6, 
+    }
+
+    public enum AudioSessionMode // values are the same as in AudioIn.mm enums
+    {
+        /// <summary>
+        /// Modes modify the audio category in order to introduce behavior that is tailored to the specific
+        /// use of audio within an application.  Available in iOS 5.0 and greater.
+        /// </summary>
+        /// <remarks>
+        /// The default mode
+        /// API_AVAILABLE(ios(5.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+        /// </remarks>
+        Default = 0,
+
+        /// <summary>
+        /// Only valid with AVAudioSessionCategoryPlayAndRecord.  Appropriate for Voice over IP
+        /// (VoIP) applications.  Reduces the number of allowable audio routes to be only those
+        /// that are appropriate for VoIP applications and may engage appropriate system-supplied
+        /// signal processing.  Has the side effect of setting AVAudioSessionCategoryOptionAllowBluetooth
+        /// </summary>
+        /// <remarks>
+        /// API_AVAILABLE(ios(5.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+        /// </remarks>
+        VoiceChat = 1,
+
+        /* Set by Game Kit on behalf of an application that uses a GKVoiceChat object; valid
+         only with the AVAudioSessionCategoryPlayAndRecord category.
+         Do not set this mode directly. If you need similar behavior and are not using
+         a GKVoiceChat object, use AVAudioSessionModeVoiceChat instead. */
+//        GameChat = 2, // API_AVAILABLE(ios(5.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+
+        /// <summary>
+        /// Only valid with AVAudioSessionCategoryPlayAndRecord or AVAudioSessionCategoryRecord.
+        /// Modifies the audio routing options and may engage appropriate system-supplied signal processing.
+        /// </summary>
+        /// <remarks>
+        /// API_AVAILABLE(ios(5.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+        /// </remarks>
+        VideoRecording = 3, 
+
+        /// <summary>
+        /// Appropriate for applications that wish to minimize the effect of system-supplied signal
+        /// processing for input and/or output audio signals.
+        /// </summary>
+        /// <remarks>
+        /// API_AVAILABLE(ios(5.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+        /// </remarks>
+        Measurement = 4,
+
+        /// <summary>
+        /// Engages appropriate output signal processing for movie playback scenarios.  Currently
+        /// only applied during playback over built-in speaker.
+        /// </summary>
+        /// <remarks>
+        /// API_AVAILABLE(ios(6.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+        /// </remarks>
+        MoviePlayback = 5,
+
+        /// <summary>
+        /// Only valid with kAudioSessionCategory_PlayAndRecord. Reduces the number of allowable audio
+        /// routes to be only those that are appropriate for video chat applications. May engage appropriate
+        /// system-supplied signal processing.  Has the side effect of setting
+        /// AVAudioSessionCategoryOptionAllowBluetooth and AVAudioSessionCategoryOptionDefaultToSpeaker.
+        /// </summary>
+        /// <remarks>
+        /// API_AVAILABLE(ios(7.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+        /// </remarks>
+        VideoChat = 6,
+
+        /* Appropriate for applications which play spoken audio and wish to be paused (via audio session interruption) rather than ducked
+        if another app (such as a navigation app) plays a spoken audio prompt.  Examples of apps that would use this are podcast players and
+        audio books.  For more information, see the related category option AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers. */
+//        SpokenAudio = 7, // API_AVAILABLE(ios(9.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
+
+        /* Appropriate for applications which play audio using text to speech. Setting this mode allows for different routing behaviors when
+        connected to certain audio devices such as CarPlay. An example of an app that would use this mode is a turn by turn navigation app that
+        plays short prompts to the user. Typically, these same types of applications would also configure their session to use
+        AVAudioSessionCategoryOptionDuckOthers and AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers */
+//        VoicePrompt = 8, // API_AVAILABLE(ios(12.0), watchos(5.0), tvos(12.0)) API_UNAVAILABLE(macos);
+    }
+
+    public enum AudioSessionCategoryOption // values as defined in Apple Audio Session API
+    {
+        /*
+        AVAudioSessionCategoryOptionMixWithOthers -- 
+            This allows an application to set whether or not other active audio apps will be interrupted or mixed with
+            when your app's audio session goes active. The typical cases are:
+             (1) AVAudioSessionCategoryPlayAndRecord or AVAudioSessionCategoryMultiRoute
+                 this will default to false, but can be set to true. This would allow other applications to play in the background
+                 while an app had both audio input and output enabled
+             (2) AVAudioSessionCategoryPlayback
+                 this will default to false, but can be set to true. This would allow other applications to play in the background,
+                 but an app will still be able to play regardless of the setting of the ringer switch
+             (3) Other categories
+                 this defaults to false and cannot be changed (that is, the mix with others setting of these categories
+                 cannot be overridden. An application must be prepared for setting this property to fail as behaviour 
+                 may change in future releases. If an application changes their category, they should reassert the 
+                 option (it is not sticky across category changes).
+
+        AVAudioSessionCategoryOptionDuckOthers -- 
+            This allows an application to set whether or not other active audio apps will be ducked when when your app's audio
+            session goes active. An example of this is the Nike app, which provides periodic updates to its user (it reduces the
+            volume of any music currently being played while it provides its status). This defaults to off. Note that the other
+            audio will be ducked for as long as the current session is active. You will need to deactivate your audio
+            session when you want full volume playback of the other audio. 
+            If your category is AVAudioSessionCategoryPlayback, AVAudioSessionCategoryPlayAndRecord, or 
+            AVAudioSessionCategoryMultiRoute, by default the audio session will be non-mixable and non-ducking. 
+            Setting this option will also make your category mixable with others (AVAudioSessionCategoryOptionMixWithOthers
+            will be set).
+
+        AVAudioSessionCategoryOptionAllowBluetooth --
+            This allows an application to change the default behaviour of some audio session categories with regards to showing
+            bluetooth Hands-Free Profile (HFP) devices as available routes. The current category behavior is:
+             (1) AVAudioSessionCategoryPlayAndRecord
+                 this will default to false, but can be set to true. This will allow a paired bluetooth HFP device to show up as
+                 an available route for input, while playing through the category-appropriate output
+             (2) AVAudioSessionCategoryRecord
+                 this will default to false, but can be set to true. This will allow a paired bluetooth HFP device to show up
+                 as an available route for input
+             (3) Other categories
+                 this defaults to false and cannot be changed (that is, enabling bluetooth for input in these categories is
+                 not allowed)
+                 An application must be prepared for setting this option to fail as behaviour may change in future releases.
+                 If an application changes their category or mode, they should reassert the override (it is not sticky
+                 across category and mode changes).
+
+        AVAudioSessionCategoryOptionDefaultToSpeaker --
+            This allows an application to change the default behaviour of some audio session categories with regards to
+            the audio route. The current category behavior is:
+             (1) AVAudioSessionCategoryPlayAndRecord category
+                 this will default to false, but can be set to true. this will route to Speaker (instead of Receiver)
+                 when no other audio route is connected.
+             (2) Other categories
+                 this defaults to false and cannot be changed (that is, the default to speaker setting of these
+                 categories cannot be overridden
+                 An application must be prepared for setting this property to fail as behaviour may change in future releases.
+                 If an application changes their category, they should reassert the override (it is not sticky across
+                 category and mode changes). 
+
+        AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers --
+            If another app's audio session mode is set to AVAudioSessionModeSpokenAudio (podcast playback in the background for example),
+            then that other app's audio will be interrupted when the current application's audio session goes active. An example of this
+            is a navigation app that provides navigation prompts to its user (it pauses any spoken audio currently being played while it
+            plays the prompt). This defaults to off. Note that the other app's audio will be paused for as long as the current session is
+            active. You will need to deactivate your audio session to allow the other audio to resume playback.
+            Setting this option will also make your category mixable with others (AVAudioSessionCategoryOptionMixWithOthers
+            will be set).  If you want other non-spoken audio apps to duck their audio when your app's session goes active, also set
+            AVAudioSessionCategoryOptionDuckOthers.
+
+        AVAudioSessionCategoryOptionAllowBluetoothA2DP --
+            This allows an application to change the default behaviour of some audio session categories with regards to showing
+            bluetooth Advanced Audio Distribution Profile (A2DP), i.e. stereo Bluetooth, devices as available routes. The current 
+            category behavior is:
+            (1) AVAudioSessionCategoryPlayAndRecord
+            this will default to false, but can be set to true. This will allow a paired bluetooth A2DP device to show up as
+            an available route for output, while recording through the category-appropriate input
+            (2) AVAudioSessionCategoryMultiRoute and AVAudioSessionCategoryRecord
+            this will default to false, and cannot be set to true.
+            (3) Other categories
+            this defaults to true and cannot be changed (that is, bluetooth A2DP ports are always supported in output-only categories).
+            An application must be prepared for setting this option to fail as behaviour may change in future releases.
+            If an application changes their category or mode, they should reassert the override (it is not sticky
+            across category and mode changes).
+            Setting both AVAudioSessionCategoryOptionAllowBluetooth and AVAudioSessionCategoryOptionAllowBluetoothA2DP is allowed. In cases
+            where a single Bluetooth device supports both HFP and A2DP, the HFP ports will be given a higher priority for routing. For HFP 
+            and A2DP ports on separate hardware devices, the last-in wins rule applies.
+
+         AVAudioSessionCategoryOptionAllowAirPlay --
+            This allows an application to change the default behaviour of some audio session categories with regards to showing
+            AirPlay devices as available routes. See the documentation of AVAudioSessionCategoryOptionAllowBluetoothA2DP for details on 
+            how this option applies to specific categories.
+         */
+
+        /// <summary>
+        /// This allows an application to set whether or not other active audio apps will be interrupted or mixed with
+        /// when your app's audio session goes active. The typical cases are:
+        /// (1) AVAudioSessionCategoryPlayAndRecord or AVAudioSessionCategoryMultiRoute
+        /// this will default to false, but can be set to true. This would allow other applications to play in the background
+        /// while an app had both audio input and output enabled
+        /// (2) AVAudioSessionCategoryPlayback
+        /// this will default to false, but can be set to true. This would allow other applications to play in the background,
+        /// but an app will still be able to play regardless of the setting of the ringer switch
+        /// (3) Other categories
+        /// this defaults to false and cannot be changed (that is, the mix with others setting of these categories
+        /// cannot be overridden. An application must be prepared for setting this property to fail as behaviour 
+        /// may change in future releases. If an application changes their category, they should reassert the 
+        /// option (it is not sticky across category changes).
+        /// MixWithOthers is only valid with AVAudioSessionCategoryPlayAndRecord, AVAudioSessionCategoryPlayback, and  AVAudioSessionCategoryMultiRoute
+        /// </summary>
+        MixWithOthers = 0x1,
+        /// <summary>
+        /// This allows an application to set whether or not other active audio apps will be ducked when when your app's audio
+        /// session goes active. An example of this is the Nike app, which provides periodic updates to its user (it reduces the
+        /// volume of any music currently being played while it provides its status). This defaults to off. Note that the other
+        /// audio will be ducked for as long as the current session is active. You will need to deactivate your audio
+        /// session when you want full volume playback of the other audio. 
+        /// If your category is AVAudioSessionCategoryPlayback, AVAudioSessionCategoryPlayAndRecord, or 
+        /// AVAudioSessionCategoryMultiRoute, by default the audio session will be non-mixable and non-ducking. 
+        /// Setting this option will also make your category mixable with others (AVAudioSessionCategoryOptionMixWithOthers
+        /// will be set).
+        /// DuckOthers is only valid with AVAudioSessionCategoryAmbient, AVAudioSessionCategoryPlayAndRecord, AVAudioSessionCategoryPlayback, and AVAudioSessionCategoryMultiRoute
+        /// </summary>
+        DuckOthers = 0x2,
+        /// <summary>
+        /// This allows an application to change the default behaviour of some audio session categories with regards to showing
+        /// bluetooth Hands-Free Profile (HFP) devices as available routes. The current category behavior is:
+        /// (1) AVAudioSessionCategoryPlayAndRecord
+        /// this will default to false, but can be set to true. This will allow a paired bluetooth HFP device to show up as
+        /// an available route for input, while playing through the category-appropriate output
+        /// (2) AVAudioSessionCategoryRecord
+        /// this will default to false, but can be set to true. This will allow a paired bluetooth HFP device to show up
+        /// as an available route for input
+        /// (3) Other categories
+        /// this defaults to false and cannot be changed (that is, enabling bluetooth for input in these categories is
+        /// not allowed)
+        /// An application must be prepared for setting this option to fail as behaviour may change in future releases.
+        /// If an application changes their category or mode, they should reassert the override (it is not sticky
+        /// across category and mode changes).
+        /// AllowBluetooth is only valid with AVAudioSessionCategoryRecord and AVAudioSessionCategoryPlayAndRecord
+        /// </summary>
+        AllowBluetooth = 0x4, // API_UNAVAILABLE(tvos, watchos, macos)
+        /// <summary>
+        /// This allows an application to change the default behaviour of some audio session categories with regards to
+        /// the audio route. The current category behavior is:
+        /// (1) AVAudioSessionCategoryPlayAndRecord category
+        /// this will default to false, but can be set to true. this will route to Speaker (instead of Receiver)
+        /// when no other audio route is connected.
+        /// (2) Other categories
+        /// this defaults to false and cannot be changed (that is, the default to speaker setting of these
+        /// categories cannot be overridden
+        /// An application must be prepared for setting this property to fail as behaviour may change in future releases.
+        /// If an application changes their category, they should reassert the override (it is not sticky across
+        /// category and mode changes). 
+        /// DefaultToSpeaker is only valid with AVAudioSessionCategoryPlayAndRecord
+        /// </summary>
+        DefaultToSpeaker = 0x8, // API_UNAVAILABLE(tvos, watchos, macos)
+        /* InterruptSpokenAudioAndMixWithOthers is only valid with AVAudioSessionCategoryPlayAndRecord, AVAudioSessionCategoryPlayback, and AVAudioSessionCategoryMultiRoute */
+//        InterruptSpokenAudioAndMixWithOthers = 0x11, // API_AVAILABLE(ios(9.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos)
+        /* AllowBluetoothA2DP is only valid with AVAudioSessionCategoryPlayAndRecord */
+//        AllowBluetoothA2DP = 0x20, // API_AVAILABLE(ios(10.0), watchos(3.0), tvos(10.0)) API_UNAVAILABLE(macos)
+        /* AllowAirPlay is only valid with AVAudioSessionCategoryPlayAndRecord */
+//        AllowAirPlay = 0x40, // API_AVAILABLE(ios(10.0), tvos(10.0)) API_UNAVAILABLE(watchos, macos)
+    }
+
+    [System.Serializable]
+    public struct AudioSessionParameters
+    {
+        public AudioSessionCategory Category;//= AudioSessionCategory.PlayAndRecord;
+        public AudioSessionMode Mode;// = AudioSessionMode.Default;
+        public AudioSessionCategoryOption[] CategoryOptions;
+        public int CategoryOptionsToInt()
+        {
+            int opt = 0;
+            if (CategoryOptions != null)
+            {
+                for (int i = 0; i < CategoryOptions.Length; i++)
+                {
+                    opt |= (int)CategoryOptions[i];
+                }
+            }
+            return opt;
+        }
+		public override string ToString()
+		{
+            var opt = "[";
+            if (CategoryOptions != null)
+            {
+                for (int i = 0; i < CategoryOptions.Length; i++)
+                {
+                    opt += CategoryOptions[i];
+                    if (i != CategoryOptions.Length - 1)
+                    {
+                        opt += ", ";
+                    }
+                }
+            }
+            opt += "]";
+            return string.Format("category = {0}, mode = {1}, options = {2}", Category, Mode, opt);
+		}
+	}
+
+    public static class AudioSessionParametersPresets
+    {
+        public static AudioSessionParameters Game = new AudioSessionParameters()
+        {
+            Category = AudioSessionCategory.PlayAndRecord,
+            Mode = AudioSessionMode.Default,
+            CategoryOptions = new AudioSessionCategoryOption[] { AudioSessionCategoryOption.DefaultToSpeaker, AudioSessionCategoryOption.AllowBluetooth }
+        };
+        public static AudioSessionParameters VoIP = new AudioSessionParameters()
+        {
+            Category = AudioSessionCategory.PlayAndRecord,
+            Mode = AudioSessionMode.VoiceChat,
+            // VoiceChat should have the side effect of setting AVAudioSessionCategoryOptionAllowBluetooth according to doc 
+            // but tests don't confirm this
+            CategoryOptions = new AudioSessionCategoryOption[] { AudioSessionCategoryOption.AllowBluetooth }
+       };
+    }
+}