public void AddSamples(AudioSampleBuffer buffer, int numSamples)
{
int ret;
if ((ret = ffmpeg.av_audio_fifo_realloc(audioFifo, GetBufferSize() + numSamples)) < 0)
{
throw new FFmpegException(ret, "Failed to reallocate fifo buffer.");
}
if ((ret = ffmpeg.av_audio_fifo_write(audioFifo, (void **)buffer.sampleBuffer, numSamples)) < 0)
{
throw new FFmpegException(ret, "Failed to write data to fifo buffer");
}
}
public void StoreFrameFromDecoder(AudioDecoder decoder, Resampler resampler = null)
{
AVFrame * inputFrame = null;
AudioSampleBuffer buffer = null;
AudioSampleBuffer resampledBuffer = null;
try
{
Util.InitInputFrame(&inputFrame);
if (decoder.GetNextAudioFrame(inputFrame))
{
buffer = new AudioSampleBuffer(inputFrame);
if (resampler != null)
{
resampler.Resample(buffer, out resampledBuffer, inputFrame->nb_samples);
AddSamples(resampledBuffer, inputFrame->nb_samples);
}
else
{
AddSamples(buffer, inputFrame->nb_samples);
}
}
}
finally
{
if (buffer != null)
{
buffer.Dispose();
}
if (resampledBuffer != null)
{
resampledBuffer.Dispose();
}
ffmpeg.av_frame_free(&inputFrame);
}
}
public void Resample(AudioSampleBuffer input, out AudioSampleBuffer output, int numSamples)
{
output = new AudioSampleBuffer(OutputSampleFormat, NumOutputChannels, numSamples);
Resample(input.sampleBuffer, output.sampleBuffer, numSamples);
}