//------------------------------------------------------------
bool ofxSoundFile::mpg123ReadFile(ofSoundBuffer & buffer){
size_t done=0;
size_t block_size = mpg123_outblock( mp3File );
int err;
if(buffer.size()==0){
buffer.resize(block_size);
do{
err = mpg123_read(mp3File,(unsigned char*)&buffer[buffer.size()-block_size],block_size*4,&done);
buffer.resize(buffer.size()+block_size);
}while(err==MPG123_OK);
buffer.resize(buffer.size()-(block_size-done/4));
if(err != MPG123_DONE){
ofLogError() << "Warning: Decoding ended prematurely because: " << (err == MPG123_ERR ? mpg123_strerror(mp3File) : mpg123_plain_strerror(err));
return false;
}
duration = float(buffer.size())/float(channels) / float(samplerate);
}else{
err = mpg123_read(mp3File,(unsigned char*)&buffer[0],buffer.size()*sizeof(float),&done);
if(err != MPG123_OK){
ofLogError() << "Warning: Error decoding mp3: " << (err == MPG123_ERR ? mpg123_strerror(mp3File) : mpg123_plain_strerror(err));
return false;
}
}
return true;
}
//--------------------------------------------------------------
bool ofxSoundFile::readTo(ofSoundBuffer & buffer, unsigned int _samples){
buffer.setNumChannels(channels);
buffer.setSampleRate(samplerate);
if(_samples!=0){
// will read the requested number of samples
// clamp to the number of samples we actually have
_samples = min(_samples,samples);
buffer.resize(_samples*channels);
}
#ifdef OF_USING_SNDFILE
else if (sndFile){
// will read entire file
buffer.resize(samples);
}
#endif
#ifdef OF_USING_LAD
else if (audioDecoder) {
// will read entire file
buffer.resize(samples);
}
#endif
#ifdef OF_USING_MPG123
else if(mp3File){
buffer.clear();
}
#endif
#ifdef OF_USING_SNDFILE
if(sndFile) return sfReadFile(buffer);
#elif defined( OF_USING_MPG123 )
if(mp3File) return mpg123ReadFile(buffer);
#elif defined( OF_USING_LAD )
if(audioDecoder) return ladReadFile(buffer);
#endif
return false;
}