public RubberBandWaveStream(IWaveProvider source)
{
if (source.WaveFormat.BitsPerSample != 16)
{
throw new FormatException("Can't process bit depth of " + source.WaveFormat.BitsPerSample);
}
_source = source;
_sourceSamples = Enumerable.Range(1, source.WaveFormat.Channels).Select(channel => new float[16384]).ToArray();
_sourceBuffer = new byte[_sourceSamples.Sum(channel => channel.Length) * 2];
_stretchedSamples = Enumerable.Range(1, source.WaveFormat.Channels).Select(channel => new float[16384]).ToArray();
_stretcher = new RubberBandStretcher(_source.WaveFormat.SampleRate, _source.WaveFormat.Channels, RubberBandStretcher.Options.ProcessRealTime);
_tempo = 1.0;
}
private void _updateAudioContext()
{
_dataWasSent = false;
_stretcher?.Dispose();
var speedRatio = (_renderer.RefreshRate / _config.TargetFps);
Console.Write(speedRatio);
_stretcher = new RubberBandStretcher(
_config.SampleRate,
2,
RubberBandStretcher.Options.ProcessRealTime,
1 / speedRatio,
speedRatio
);
_latencyCounter = _stretcher.GetLatency();
if (_resamplerState != IntPtr.Zero)
{
SampleRate.src_delete(_resamplerState);
}
if (_config.SampleRate != (int)_currentSystemAvInfo.Timing.SampleRate)
{
_resampleNeeded = true;
_audioResampleRatio = (_config.SampleRate / _currentSystemAvInfo.Timing.SampleRate);
_resamplerState = SampleRate.src_new(SampleRate.Quality.SRC_SINC_BEST_QUALITY, 2, out var error);
if (error > 0)
{
Logger.Error("Error initializing resampler: '{0}'", SampleRate.src_strerror(error));
}
Logger.Debug("Audio Resample Ratio: {0}", _audioResampleRatio);
}
else
{
_resampleNeeded = false;
Logger.Debug("Resampling not needed");
}
}
