private short[][] Decode(OpusParameters config)
{
var dec = new OpusDecoder(SampleRate, ChannelCount);
int maxSampleCount = Frames.Max(x => x.SampleCount);
var pcmOut = Helpers.CreateJaggedArray <short[][]>(ChannelCount, SampleCount);
var pcmBuffer = new short[ChannelCount * maxSampleCount];
int outPos = 0;
int remaining = SampleCount + PreSkipCount;
config.Progress?.SetTotal(Frames.Count);
for (int i = 0; i < Frames.Count; i++)
{
int frameSamples = Math.Min(remaining, Frames[i].SampleCount);
dec.Decode(Frames[i].Data, 0, Frames[i].Data.Length, pcmBuffer, 0, maxSampleCount);
short[][] deinterleaved = pcmBuffer.DeInterleave(1, ChannelCount);
CopyBuffer(deinterleaved, frameSamples, pcmOut, PreSkipCount, outPos);
outPos += frameSamples;
remaining -= frameSamples;
config.Progress?.ReportAdd(1);
}
config.Progress?.SetTotal(0);
return(pcmOut);
}
// find the last frame number
public int GetCurrentFrameNumber()
{
int currentFrames = 0;
currentFrames = Frames.Count > 0 ? Frames.Max(x => x.Key) : 0;
return(currentFrames);
}
public void EnsureHasFinalRange()
{
if (HasFinalRange)
{
return;
}
int maxSampleCount = Frames.Max(x => x.SampleCount);
var dec = new OpusDecoder(SampleRate, ChannelCount);
var pcm = new short[5760 * ChannelCount];
foreach (OpusFrame frame in Frames)
{
dec.Decode(frame.Data, 0, frame.Data.Length, pcm, 0, maxSampleCount);
frame.FinalRange = dec.FinalRange;
}
HasFinalRange = true;
}
