/// <exception cref="DecoderException"></exception>
public static FFmpegAudioDecoder CreateDecoder(FFmpegAudioCodecId audioCodecId, int bitsPerCodedSample)
{
int resultCode = FFmpegAudioPInvoke.CreateAudioDecoder(audioCodecId, bitsPerCodedSample, out IntPtr decoderPtr);
if (resultCode != 0)
{
throw new DecoderException($"An error occurred while creating audio decoder for {audioCodecId} codec, code: {resultCode}");
}
return(new FFmpegAudioDecoder(audioCodecId, bitsPerCodedSample, decoderPtr));
}
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);
}
public static extern int CreateAudioDecoder(FFmpegAudioCodecId audioCodecId, int bitsPerCodedSample, out IntPtr handle);
private FFmpegAudioDecoder(FFmpegAudioCodecId audioCodecId, int bitsPerCodedSample, IntPtr decoderHandle)
{
_audioCodecId = audioCodecId;
BitsPerCodedSample = bitsPerCodedSample;
_decoderHandle = decoderHandle;
}
