int test(){
printf("test start!\n");
op_test();
mem_test();
stack_test();
file_test();
return 0;
}
bool CSoundFile::ReadOpusSample(SAMPLEINDEX sample, FileReader &file)
{
file.Rewind();
#if defined(MPT_WITH_OPUSFILE)
int rate = 0;
int channels = 0;
std::vector<int16> raw_sample_data;
FileReader initial = file.GetChunk(65536); // 512 is recommended by libopusfile
if(op_test(NULL, initial.GetRawData<unsigned char>(), initial.GetLength()) != 0)
{
return false;
}
OggOpusFile *of = op_open_memory(file.GetRawData<unsigned char>(), file.GetLength(), NULL);
if(!of)
{
return false;
}
rate = 48000;
channels = op_channel_count(of, -1);
if(rate <= 0 || channels <= 0)
{
op_free(of);
of = NULL;
return false;
}
if(channels > 2 || op_link_count(of) != 1)
{
// We downmix multichannel to stereo as recommended by Opus specification in
// case we are not able to handle > 2 channels.
// We also decode chained files as stereo even if they start with a mono
// stream, which simplifies handling of link boundaries for us.
channels = 2;
}
std::vector<int16> decodeBuf(120 * 48000 / 1000); // 120ms (max Opus packet), 48kHz
bool eof = false;
while(!eof)
{
int framesRead = 0;
if(channels == 2)
{
framesRead = op_read_stereo(of, &(decodeBuf[0]), static_cast<int>(decodeBuf.size()));
} else if(channels == 1)
{
framesRead = op_read(of, &(decodeBuf[0]), static_cast<int>(decodeBuf.size()), NULL);
}
if(framesRead > 0)
{
raw_sample_data.insert(raw_sample_data.end(), decodeBuf.begin(), decodeBuf.begin() + (framesRead * channels));
} else if(framesRead == 0)
{
eof = true;
} else if(framesRead == OP_HOLE)
{
// continue
} else
{
// other errors are fatal, stop decoding
eof = true;
}
}
op_free(of);
of = NULL;
if(raw_sample_data.empty())
{
return false;
}
DestroySampleThreadsafe(sample);
strcpy(m_szNames[sample], "");
Samples[sample].Initialize();
Samples[sample].nC5Speed = rate;
Samples[sample].nLength = raw_sample_data.size() / channels;
Samples[sample].uFlags.set(CHN_16BIT);
Samples[sample].uFlags.set(CHN_STEREO, channels == 2);
Samples[sample].AllocateSample();
std::copy(raw_sample_data.begin(), raw_sample_data.end(), Samples[sample].pSample16);
Samples[sample].Convert(MOD_TYPE_IT, GetType());
Samples[sample].PrecomputeLoops(*this, false);
return Samples[sample].pSample != nullptr;
#else // !MPT_WITH_OPUSFILE
MPT_UNREFERENCED_PARAMETER(sample);
MPT_UNREFERENCED_PARAMETER(file);
return false;
#endif // MPT_WITH_OPUSFILE
}
