private void OnFrameReceived(object sender, RawFrame rawFrame)
{
if (!(rawFrame is RawAudioFrame rawAudioFrame))
{
return;
}
FFmpegAudioDecoder decoder = GetDecoderForFrame(rawAudioFrame);
if (!decoder.TryDecode(rawAudioFrame, out int decodedFrameSize))
{
return;
}
if (_decodedFrameBuffer.Length < decodedFrameSize)
{
_decodedFrameBuffer = new byte[decodedFrameSize];
}
var bufferSegment = new ArraySegment <byte>(_decodedFrameBuffer, 0, decodedFrameSize);
IDecodedAudioFrame decodedFrame = decoder.GetDecodedFrame(bufferSegment);
FrameReceived?.Invoke(this, decodedFrame);
}
private FFmpegAudioDecoder GetDecoderForFrame(RawAudioFrame audioFrame)
{
FFmpegAudioCodecId codecId = DetectCodecId(audioFrame);
if (!_audioDecodersMap.TryGetValue(codecId, out FFmpegAudioDecoder decoder))
{
int bitsPerCodedSample = 0;
if (audioFrame is RawG726Frame g726Frame)
{
bitsPerCodedSample = g726Frame.BitsPerCodedSample;
}
decoder = FFmpegAudioDecoder.CreateDecoder(codecId, bitsPerCodedSample);
_audioDecodersMap.Add(codecId, decoder);
}
return(decoder);
}
//convert the raw frame to decoded frame
private void RtspClientOnFrameReceived(object sender, RawFrame rawFrame)
{
if (!(rawFrame is RawAudioFrame rawAudioFrame))
{
return;
}
FFmpegAudioDecoder decoder = GetDecoderForFrame(rawAudioFrame);
if (!decoder.TryDecode(rawAudioFrame))
{
return;
}
//OutBitsPerSample may need to be set by user or the program?
IDecodedAudioFrame decodedFrame = decoder.GetDecodedFrame(new AudioConversionParameters()
{
OutBitsPerSample = 16
});
System.Windows.Application.Current.Dispatcher.Invoke(_invalidateAction, DispatcherPriority.Send, decodedFrame);
}
private void OnFrameReceived(object sender, RawFrame rawFrame)
{
if (!(rawFrame is RawAudioFrame rawAudioFrame))
{
return;
}
FFmpegAudioDecoder decoder = GetDecoderForFrame(rawAudioFrame);
if (!decoder.TryDecode(rawAudioFrame))
{
return;
}
IDecodedAudioFrame decodedFrame = decoder.GetDecodedFrame(new AudioConversionParameters()
{
OutBitsPerSample = 16
});
FrameReceived?.Invoke(this, decodedFrame);
}