private ResultCode DecodeInterleavedInternal(BinaryReader input, out short[] outPcmData, long outputSize, out uint outConsumed, out int outSamples)
{
outPcmData = null;
outConsumed = 0;
outSamples = 0;
long streamSize = input.BaseStream.Length;
if (streamSize < Marshal.SizeOf <OpusPacketHeader>())
{
return(ResultCode.OpusInvalidInput);
}
OpusPacketHeader header = OpusPacketHeader.FromStream(input);
uint totalSize = header.length + (uint)Marshal.SizeOf <OpusPacketHeader>();
if (totalSize > streamSize)
{
return(ResultCode.OpusInvalidInput);
}
byte[] opusData = input.ReadBytes((int)header.length);
ResultCode result = GetPacketNumSamples(out int numSamples, opusData);
if (result == ResultCode.Success)
{
if ((uint)numSamples * (uint)_channelsCount * sizeof(short) > outputSize)
{
return(ResultCode.OpusInvalidInput);
}
outPcmData = new short[numSamples * _channelsCount];
if (_reset)
{
_reset = false;
_decoder.ResetState();
}
try
{
outSamples = _decoder.Decode(opusData, 0, opusData.Length, outPcmData, 0, outPcmData.Length / _channelsCount);
outConsumed = totalSize;
}
catch (OpusException)
{
// TODO: as OpusException doesn't provide us the exact error code, this is kind of inaccurate in some cases...
return(ResultCode.OpusInvalidInput);
}
}
return(ResultCode.Success);
}
public static ResultCode DecodeInterleaved(
this IDecoder decoder,
bool reset,
ReadOnlySpan <byte> input,
out short[] outPcmData,
ulong outputSize,
out uint outConsumed,
out int outSamples)
{
outPcmData = null;
outConsumed = 0;
outSamples = 0;
int streamSize = input.Length;
if (streamSize < Unsafe.SizeOf <OpusPacketHeader>())
{
return(ResultCode.OpusInvalidInput);
}
OpusPacketHeader header = OpusPacketHeader.FromSpan(input);
int headerSize = Unsafe.SizeOf <OpusPacketHeader>();
uint totalSize = header.length + (uint)headerSize;
if (totalSize > streamSize)
{
return(ResultCode.OpusInvalidInput);
}
byte[] opusData = input.Slice(headerSize, (int)header.length).ToArray();
ResultCode result = decoder.GetPacketNumSamples(out int numSamples, opusData);
if (result == ResultCode.Success)
{
if ((uint)numSamples * (uint)decoder.ChannelsCount * sizeof(short) > outputSize)
{
return(ResultCode.OpusInvalidInput);
}
outPcmData = new short[numSamples * decoder.ChannelsCount];
if (reset)
{
decoder.ResetState();
}
try
{
outSamples = decoder.Decode(opusData, 0, opusData.Length, outPcmData, 0, outPcmData.Length / decoder.ChannelsCount);
outConsumed = totalSize;
}
catch (OpusException)
{
// TODO: as OpusException doesn't provide us the exact error code, this is kind of inaccurate in some cases...
return(ResultCode.OpusInvalidInput);
}
}
return(ResultCode.Success);
}