WavStreamInstance::WavStreamInstance(WavStream *aParent)
{
mParent = aParent;
mOffset = 0;
mOgg = 0;
mFile = 0;
if (aParent->mFilename == NULL)
return;
mFile = fopen(aParent->mFilename, "rb");
if (mFile)
{
if (mParent->mOgg)
{
int e;
mOgg = stb_vorbis_open_file(mFile, 0, &e, NULL);
if (!mOgg)
{
fclose(mFile);
mFile = 0;
}
mOggFrameSize = 0;
mOggFrameOffset = 0;
mOggOutputs = 0;
}
else
{
fseek(mFile, aParent->mDataOffset, SEEK_SET);
}
}
}
int Wav::testAndLoadFile(DataReader *aReader)
{
delete[] mData;
mData = 0;
mSampleCount = 0;
int tag = aReader->read32();
if (tag == MAKEDWORD('O','g','g','S'))
{
aReader->seek(0);
int e = 0;
stb_vorbis *v = 0;
if (aReader->isMemoryFile())
{
v = stb_vorbis_open_memory(aReader->currentData(), aReader->dataLength(), &e, 0);
}
else
{
v = stb_vorbis_open_file(aReader->filePtr(), 0, &e, 0);
}
if (0 != v)
{
return loadogg(v);
}
return FILE_LOAD_FAILED;
}
else if (tag == MAKEDWORD('R','I','F','F'))
{
return loadwav(aReader);
}
return FILE_LOAD_FAILED;
}
WavStreamInstance::WavStreamInstance(WavStream *aParent)
{
mParent = aParent;
mOffset = 0;
mOgg = 0;
mFile = 0;
if (aParent->mMemFile)
{
MemoryFile *mf = new MemoryFile();
mFile = mf;
mf->openMem(aParent->mMemFile->getMemPtr(), aParent->mMemFile->length(), false, false);
}
else
if (aParent->mFilename)
{
DiskFile *df = new DiskFile;
mFile = df;
df->open(aParent->mFilename);
}
else
if (aParent->mStreamFile)
{
mFile = aParent->mStreamFile;
mFile->seek(0); // stb_vorbis assumes file offset to be at start of ogg
}
else
{
return;
}
if (mFile)
{
if (mParent->mOgg)
{
int e;
mOgg = stb_vorbis_open_file((Soloud_Filehack *)mFile, 0, &e, 0);
if (!mOgg)
{
if (mFile != mParent->mStreamFile)
delete mFile;
mFile = 0;
}
mOggFrameSize = 0;
mOggFrameOffset = 0;
mOggOutputs = 0;
}
else
{
mFile->seek(aParent->mDataOffset);
}
}
}
void WavStream::loadogg(FILE * fp)
{
fseek(fp,0,SEEK_SET);
int e;
stb_vorbis *v = stb_vorbis_open_file(fp, 0, &e, NULL);
if (!v) return;
stb_vorbis_info info = stb_vorbis_get_info(v);
if (info.channels > 1)
{
mChannels = 2;
}
mBaseSamplerate = (float)info.sample_rate;
int samples = stb_vorbis_stream_length_in_samples(v);
stb_vorbis_close(v);
mOgg = 1;
mSampleCount = samples;
}
static unsigned char *loadSound_ogg( String path,int *length,int *channels,int *format,int *hertz ){
FILE *f=fopenFile( path,"rb" );
if( !f ) return 0;
int error;
stb_vorbis *v=stb_vorbis_open_file( f,0,&error,0 );
if( !v ){
fclose( f );
return 0;
}
stb_vorbis_info info=stb_vorbis_get_info( v );
int limit=info.channels*4096;
int offset=0,data_len=0,total=limit;
short *data=(short*)malloc( total*sizeof(short) );
for(;;){
int n=stb_vorbis_get_frame_short_interleaved( v,info.channels,data+offset,total-offset );
if( !n ) break;
data_len+=n;
offset+=n*info.channels;
if( offset+limit>total ){
total*=2;
data=(short*)realloc( data,total*sizeof(short) );
}
}
*length=data_len;
*channels=info.channels;
*format=2;
*hertz=info.sample_rate;
stb_vorbis_close(v);
fclose( f );
return (unsigned char*)data;
}
result WavStream::loadogg(File * fp)
{
fp->seek(0);
int e;
stb_vorbis *v;
v = stb_vorbis_open_file((Soloud_Filehack *)fp, 0, &e, 0);
if (v == NULL)
return FILE_LOAD_FAILED;
stb_vorbis_info info = stb_vorbis_get_info(v);
if (info.channels > 1)
{
mChannels = 2;
}
mBaseSamplerate = (float)info.sample_rate;
int samples = stb_vorbis_stream_length_in_samples(v);
stb_vorbis_close(v);
mOgg = 1;
mSampleCount = samples;
return 0;
}
void LoadSoundStream(SoundStream* stream, const char * file_path) {
FILE *file = Global::platform()->OpenFile(file_path, "rb");
int error;
stb_vorbis *v = stb_vorbis_open_file(file, false, &error, nullptr);
if (v == nullptr) return;
stb_vorbis_info info = stb_vorbis_get_info(v);
stream->mChannels = info.channels;
stream->mSampleRate = info.sample_rate;
for (;;) {
float** frame_data;
int n = stb_vorbis_get_frame_float(v, &(info.channels), &frame_data);
if (n == 0) break;
for (int idx = 0; idx < n; ++idx)
{
for (int channel_idx = 0; channel_idx < info.channels; ++channel_idx)
{
stream->mAudio.push_back(frame_data[channel_idx][idx]);
}
}
}
stb_vorbis_close(v);
}
