コード例 #1
0
//------------------------------------------------------------
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;
}
コード例 #2
0
//--------------------------------------------------------------
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;
}