public ErrorCode init(AVProperty prop, IMediaInfo input, out IMediaInfo output)
{
output = null;
if (input == null)
{
return ErrorCode.NullReference;
}
if (input.stremType() != StreamType.Audio)
{
return ErrorCode.InvalidStream;
}
if (input.mediaType() == MediaType.WAVE_LPCM)
{
lpcm_ = true;
}
else if (input.mediaType() == MediaType.WAVE_PCM)
{
lpcm_ = false;
}
else
{
return ErrorCode.InvalidStream;
}
output = new WaveInfo(input.getAudioInfo(), input.getDuration());
return ErrorCode.Success;
}
public static ErrorCode create(IMediaInfo info, out IFilter decoder)
{
decoder = null;
if (info == null)
{
return ErrorCode.NullReference;
}
if (info.stremType() == StreamType.Audio)
{
switch (info.mediaType())
{
case MediaType.WAVE_LPCM:
case MediaType.WAVE_PCM:
{
decoder = new PCMDecoder();
return ErrorCode.Success;
}
case MediaType.MPEG10:
{
decoder = new M1L2Decoder();
return ErrorCode.Success;
}
}
}
return ErrorCode.Unsupported;
}
public ErrorCode init(AVProperty prop, IMediaInfo input)
{
if (input == null)
{
return ErrorCode.NullReference;
}
StreamType st = input.stremType();
if (st != StreamType.Audio)
{
return ErrorCode.InvalidStream;
}
MediaType mt = input.mediaType();
if (mt != MediaType.WAVE_PCM)
{
return ErrorCode.InvalidStream;
}
AudioInfo ai = input.getAudioInfo();
wfx_.cbSize = 0;
wfx_.nChannels = ai.channels;
wfx_.wBitsPerSample = ai.bitsPerSample;
wfx_.nBlockAlign = (UInt16)(ai.channels * ai.bitsPerSample / 8);
wfx_.wFormatTag = 1;
wfx_.nSamplesPerSec = ai.sampleRate;
wfx_.nAvgBytesPerSec = wfx_.nBlockAlign * wfx_.nSamplesPerSec;
return ErrorCode.Success;
}
public static ErrorCode create(IMediaInfo info, out IRenderer renderer)
{
renderer = null;
if (info == null)
{
return ErrorCode.NullReference;
}
if (info.stremType() == StreamType.Audio)
{
switch (info.mediaType())
{
case MediaType.WAVE_PCM:
{
renderer = new AudioRenderer();
return ErrorCode.Success;
}
}
}
return ErrorCode.Unsupported;
}
public ErrorCode init(AVProperty prop, IMediaInfo input, out IMediaInfo output)
{
output = null;
if (input == null)
{
return ErrorCode.NullReference;
}
if (input.stremType() != StreamType.Audio)
{
return ErrorCode.InvalidStream;
}
if (input.mediaType() != MediaType.MPEG10)
{
return ErrorCode.InvalidStream;
}
output = new WaveInfo(input.getAudioInfo(), input.getDuration());
return ErrorCode.Success;
}