private OpusDecoder(double frameSize, OpusSampleRate sampleRate, OpusAudioChannels audioChannels, bool frameSizeWasSpecified)
{
switch (frameSize)
{
case 2.5:
case 5:
case 10:
case 20:
case 40:
case 60:
break;
default:
throw new ArgumentException("Value must be one of the following: 2.5, 5, 10, 20, 40 or 60.", nameof(frameSize));
}
if (!Enum.IsDefined(typeof(OpusSampleRate), sampleRate))
{
throw new ArgumentException("Value is not defined in the enumeration.", nameof(sampleRate));
}
if (!Enum.IsDefined(typeof(OpusAudioCHannels), audioChannels))
{
throw new ArgumentException("Value is not defined in the enumeration.", nameof(audioChannels));
}
if (frameSizeWasSpecified)
{
FrameSize = frameSize;
}
SampleRate = sampleRate;
AudioChannels = audioChannels;
_samples = GetSampleCount(frameSize);
_pcmLength = GetPCMLength(_samples);
_handle = FFI.opus_decoder_create((int)sampleRate, (int)audioChannels, out int error);
ThrowIfError(error);
}
public static extern int opus_decode(SafeDecoderHandle st, IntPtr data, int len, IntPtr pcm, int frame_size, int decode_fec);