void Session::bounce_region(RegionPtr region, std::string filename, Session::FileType type){
//use the bounce session to create file
//e.g Session temp;
//add the region
//temp->add_region(region)
//bounce down
//temp->bounce_session(filename)
//change original region to the new soundfile.
SamplePosition storedPosition = region->get_start_pos();
Session temp;
temp.set_playback_duration(region->get_duration() + region->get_extension());
region->set_start_pos(0);
temp.add_region(region);
temp.bounce_session(filename,type);
region->set_start_pos(storedPosition);
}
std::string Session::timestretch_region(RegionPtr region, double speed, std::string folderpath, std::string name, int fftSize, int numOverlaps){
//got here
//need to take region,
//call internal process on the region passing the output into a table,
//run through the table with phasor set up accordingly
//render out the new region using sndfile
//initially use the table lookup functionality
fsom::DebugStream << "Entering Timestretch"<<std::endl;
///////////////////////////////////////////////////////
////////Create new session with the region/////////////
SamplePosition storedPosition = region->get_start_pos();
Session temp;
temp.set_playback_duration(region->get_duration() + region->get_extension());
region->set_start_pos(0);
temp.add_region(region);
std::string filepath = folderpath + name+"bounce.wav";
temp.bounce_session(filepath);
region->set_start_pos(storedPosition);
fsom::DebugStream << "Region Bounced"<<std::endl;
///////////////////////////////////////////////////////
///////
std::stringstream ssPath;
char number[24]; // dummy size, you should take care of the size!
// sprintf(number, "%.2f", stretchAmount);
ssPath<< folderpath<< "TS" << name<< (1.0f/speed)*100<<"%.wav";
TimeStretcher timeStretcher(speed,fftSize,numOverlaps,filepath,ssPath.str() );
timeStretcher.run();
/*
MultiTableBuffer t_tables=load_file_to_table(filepath);
fsom::DebugStream << "File loaded into table"<<std::endl;
std::stringstream ssPath;
ssPath<< folderpath<< name<<stretchAmount*100<< "%TStretch.wav";
SNDFILE* outfile;
SF_INFO m_info;
m_info.channels = 2;
m_info.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16 | SF_ENDIAN_LITTLE;
m_info.samplerate = 44100;
outfile = sf_open(ssPath.str().c_str(),SFM_WRITE,&m_info);
fsom::DebugStream << "Table size = "<< t_tables.at(0)->get_size()+1 ;
//FIXME mixing logic here!!!!!!
/*
Phasor t_phasor(44100,stretchAmount/2.0f);
float* tempBuf = new float[2];
for(int n = 0; n < float(region->get_duration()/2)*stretchAmount ;++n){
tempBuf[0]= t_tables.at(0)->linear_lookup(t_phasor.get_phase()*(t_tables.at(0)->get_size()+1));
tempBuf[1]= t_tables.at(1)->linear_lookup(t_phasor.get_phase()*(t_tables.at(1)->get_size()+1));
sf_writef_float(outfile,tempBuf,2);//write to disk
t_phasor.tick();
}
delete []tempBuf;
const int HEADCOUNT = 16;
const int WINDOWSIZE = 1024;
const float FREQ = 44100.0f/float(WINDOWSIZE);
Phasor tapeHead(44100,FREQ);
Table<double> t_han(WINDOWSIZE);
t_han.fill_hann();
float pos = 0.0;
float rate = 1.0f/stretchAmount;
float headPos[HEADCOUNT];
for(int n = 0; n < HEADCOUNT; ++n){
headPos[n] = 0;
}
int size = region->get_duration()/rate;
for(int samp = 0; samp < size;++samp){
float s[2];
s[0] = s[1] = 0.0f;
for(int n = 0; n < HEADCOUNT; ++n){
float phase = phase_wrap( tapeHead.get_phase() + float(n)/float(HEADCOUNT) );
float gain = t_han.linear_lookup(phase*float(WINDOWSIZE)) ;
if( phase < 0.001 ){
headPos[n] = pos;
}
s[0] += ( t_tables.at(0)->linear_lookup( phase*float(WINDOWSIZE) + headPos[n] ) * gain) * (1.0f/float(HEADCOUNT));
s[1] += ( t_tables.at(1)->linear_lookup( phase*float(WINDOWSIZE) + headPos[n] ) * gain )* (1.0f/float(HEADCOUNT));
}
tapeHead.tick();
sf_writef_float(outfile,s,1);//write to disk
pos += rate;
}
*/
return ssPath.str();
//////////////////////////////////////////////////////
///////
}