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