private void RenderVisualization(short[] frame, AudioVisualizer audioVisualizer)
{
if (audioVisualizer != null)
{
var samples = new short[frame.Length / sizeof(short)];
Buffer.BlockCopy(frame, 0, samples, 0, frame.Length);
audioVisualizer.RenderVisualization(samples);
}
}
private static void RenderVisualization(short[] frame, int start, int length, AudioVisualizer audioVisualizer)
{
if (audioVisualizer != null)
{
var samples = new short[length];
Buffer.BlockCopy(frame, start * sizeof(short), samples, 0, length * sizeof(short));
audioVisualizer.RenderVisualization(samples);
}
}
public virtual void SubmitRecordedFrame(AudioContext ctx, byte[] frame)
{
var recordedFrame = new byte[frame.Length];
Buffer.BlockCopy(frame, 0, recordedFrame, 0, frame.Length);
RecordedFrames.Add(recordedFrame);
if (mRecordedFrameCount++ % VisualizationRate == 0)
{
mAudioVisualizer.RenderVisualization(recordedFrame);
}
}
public virtual void GetNextAudioFrame(Action <MemoryStream> callback)
{
if (IsConnected)
{
if (mFrameIndex < Frames.Count)
{
byte[] frame = Frames[mFrameIndex++];
if (mFrameIndex % VisualizationRate == 0)
{
Deployment.Current.Dispatcher.BeginInvoke(() => mAudioVisualizer.RenderVisualization(frame));
}
callback(new MemoryStream(frame));
return;
}
StopPlaying();
}
callback(new MemoryStream());
}
protected void EchoCancelFrame(byte[] frame)
{
mEchoCancelFilter.Write(frame);
bool moreFrames;
do
{
var cancelledShorts = new short[frame.Length / sizeof(short)];
if (mEchoCancelFilter.Read(cancelledShorts, out moreFrames))
{
var cancelledBytes = new byte[frame.Length];
Buffer.BlockCopy(cancelledShorts, 0, cancelledBytes, 0, frame.Length);
CancelledFrames.Add(cancelledBytes);
if (mCancelledFrameCount++ % VisualizationRate == 0)
{
mCancelledAudioVisualizer.RenderVisualization(cancelledBytes);
}
}
} while (moreFrames);
}