//--------------------------------------------------------------
bool ofxSoundFile::save(string path, const ofSoundBuffer &buff){
// check that we're writing a wav and complain if the file extension is wrong.
ofFile f(path);
if(ofToLower(f.getExtension())!="wav") {
path += ".wav";
ofLogWarning() << "Can only write wav files - will save file as " << path;
}
fstream file(ofToDataPath(path).c_str(), ios::out | ios::binary);
if(!file.is_open()) {
ofLogError() << "Error opening sound file '" << path << "' for writing";
return false;
}
// write a wav header
short myFormat = 1; // for pcm
int mySubChunk1Size = 16;
int bitsPerSample = 16; // assume 16 bit pcm
int myByteRate = buff.getSampleRate() * buff.getNumChannels() * bitsPerSample/8;
short myBlockAlign = buff.getNumChannels() * bitsPerSample/8;
int myChunkSize = 36 + buff.size()*bitsPerSample/8;
int myDataSize = buff.size()*bitsPerSample/8;
int channels = buff.getNumChannels();
int samplerate = buff.getSampleRate();
file.seekp (0, ios::beg);
file.write ("RIFF", 4);
file.write ((char*) &myChunkSize, 4);
file.write ("WAVE", 4);
file.write ("fmt ", 4);
file.write ((char*) &mySubChunk1Size, 4);
file.write ((char*) &myFormat, 2); // should be 1 for PCM
file.write ((char*) &channels, 2); // # channels (1 or 2)
file.write ((char*) &samplerate, 4); // 44100
file.write ((char*) &myByteRate, 4); //
file.write ((char*) &myBlockAlign, 2);
file.write ((char*) &bitsPerSample, 2); //16
file.write ("data", 4);
file.write ((char*) &myDataSize, 4);
// write the wav file per the wav file format, 4096 bytes of data at a time.
#define WRITE_BUFF_SIZE 4096
short writeBuff[WRITE_BUFF_SIZE];
int pos = 0;
while(pos<buff.size()) {
int len = MIN(WRITE_BUFF_SIZE, buff.size()-pos);
for(int i = 0; i < len; i++) {
writeBuff[i] = (int)(buff[pos]*32767.f);
pos++;
}
file.write((char*)writeBuff, len*bitsPerSample/8);
}
file.close();
return true;
}
bool ofxSoundFile::sfReadFile(ofSoundBuffer & buffer){
samples_read = sf_read_float (sndFile, &buffer[0], buffer.size());
/*if(samples_read<(int)buffer.size()){
ofLogError() << "ofxSoundFile: couldnt read " << path;
return false;
}*/
if (subformat == SF_FORMAT_FLOAT || subformat == SF_FORMAT_DOUBLE){
for (int i = 0 ; i < int(buffer.size()) ; i++){
buffer[i] *= scale ;
}
}
return true;
}
//------------------------------------------------------------
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::ladReadFile(ofSoundBuffer &buffer){
int samplesRead = audioDecoder->read( buffer.size(), &buffer[0] );
return samplesRead;
}
