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(); ////////////////////////////////////////////////////// /////// }