public void Input(byte[] buf)
{
if (buf == null)
{
return;
}
if (buf.Length == 0)
{
return;
}
BinaryFormatter bf = new BinaryFormatter();
MemoryStream stream = new MemoryStream(buf);
var obj = bf.Deserialize(stream);
if (obj.GetType() != outType)
{
var objFloat = obj as float[];
if (objFloat != null)
{
var objShort = new short[objFloat.Length];
AudioUtil.Convert(objFloat, objShort, objFloat.Length);
output((T[])(object)objShort);
}
else
{
var objShort = obj as short[];
if (objShort != null)
{
objFloat = new float[objShort.Length];
AudioUtil.Convert(objShort, objFloat, objShort.Length);
output((T[])(object)objFloat);
}
}
}
else
{
output((T[])obj);
}
}
public void OnAudioOutFrameFloat(float[] data)
{
if (disposed)
{
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);
}
}
}
}
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;
}
}
}
}
}
}
public T[] Process(T[] buf)
{
AudioUtil.Resample(buf, this.frameResampled, this.frameResampled.Length, channels);
return(this.frameResampled);
}
/// <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 audio stream parameters. Set applicable fields to read them by encoder and by receiving client when voice created.</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>(transport, voiceInfo);
break;
case AudioSampleType.Short:
encoder = Platform.CreateDefaultAudioEncoder <short>(transport, voiceInfo);
break;
}
}
if (source is IAudioPusher <float> )
{
if (sampleType == AudioSampleType.Short)
{
transport.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)
{
transport.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)
{
transport.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)
{
transport.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
{
transport.LogError("[PV] CreateLocalVoiceAudioFromSource does not support Voice.IAudioDesc of type {0}", source.GetType());
return(LocalVoiceAudioDummy.Dummy);
}
}
