/* ZynAddSubFX - a software synthesizer Sequencer.C - The Sequencer Copyright (C) 2003-2005 Nasca Octavian Paul Author: Nasca Octavian Paul This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License (version 2) for more details. You should have received a copy of the GNU General Public License (version 2) along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <math.h> #include <stdlib.h> #include <stdio.h> #include <sys/time.h> #include <time.h> #include "Sequencer.h" Sequencer::Sequencer(){ play=0; for (int i=0;i<NUM_MIDI_TRACKS;i++){ miditrack[i].track.first=NULL; miditrack[i].track.current=NULL; miditrack[i].track.size=0; miditrack[i].track.length=0.0; miditrack[i].record.first=NULL; miditrack[i].record.current=NULL; miditrack[i].record.size=0; miditrack[i].record.length=0.0; nextevent[i].time=0.0; resettime(&playtime[i]); }; setplayspeed(0); }; Sequencer::~Sequencer(){ for (int i=0;i<NUM_MIDI_TRACKS;i++){ deletelist(&miditrack[i].track); deletelist(&miditrack[i].record); }; }; int Sequencer::importmidifile(char *filename){ if (midifile.loadfile(filename)<0) return(-1); for (int i=0;i<NUM_MIDI_TRACKS;i++){ deletelist(&miditrack[i].record); }; if (midifile.parsemidifile(this)<0) return(-1); //copy the "record" track to the main track for (int i=0;i<NUM_MIDI_TRACKS;i++){ deletelist(&miditrack[i].track); miditrack[i].track=miditrack[i].record; deletelistreference(&miditrack[i].record); }; return(0); }; void Sequencer::startplay(){ if (play!=0) return; for (int i=0;i<NUM_MIDI_TRACKS;i++) resettime(&playtime[i]); for (int i=0;i<NUM_MIDI_TRACKS;i++){ rewindlist(&miditrack[i].track); }; play=1; }; void Sequencer::stopplay(){ if (play==0) return; play=0; }; // ************ Player stuff *************** int Sequencer::getevent(char ntrack,int *midich, int *type,int *par1, int *par2){ *type=0; if (play==0) return(-1); //test // if (ntrack!=0) return(-1); updatecounter(&playtime[(int)ntrack]); // printf("%g %g\n",nextevent[ntrack].time,playtime[ntrack].abs); if (nextevent[(int)ntrack].time<playtime[(int)ntrack].abs) readevent(&miditrack[(int)ntrack].track,&nextevent[(int)ntrack].ev); else return(-1); if (nextevent[(int)ntrack].ev.type==-1) return(-1); // printf("********************************\n"); //sa pun aici o protectie. a.i. daca distanta dintre timpul curent si eveliment e prea mare (>1sec) sa elimin nota if (ntrack==1) printf("_ %f %.2f (%d)\n",nextevent[(int)ntrack].time,playtime[(int)ntrack].abs,nextevent[(int)ntrack].ev.par2); *type=nextevent[(int)ntrack].ev.type; *par1=nextevent[(int)ntrack].ev.par1; *par2=nextevent[(int)ntrack].ev.par2; *midich=nextevent[(int)ntrack].ev.channel; double dt=nextevent[(int)ntrack].ev.deltatime*0.0001*realplayspeed; printf("zzzzzzzzzzzzzz[%d] %d\n",ntrack,nextevent[(int)ntrack].ev.deltatime); nextevent[(int)ntrack].time+=dt; // printf("%f - %d %d \n",nextevent[ntrack].time,par1,par2); return(0);//?? sau 1 }; /************** Timer stuff ***************/ void Sequencer::resettime(timestruct *t){ t->abs=0.0; t->rel=0.0; timeval tval; t->last=0.0; #ifndef OS_WINDOWS if (gettimeofday(&tval,NULL)==0) t->last=tval.tv_sec+tval.tv_usec*0.000001; #endif }; void Sequencer::updatecounter(timestruct *t){ timeval tval; double current=0.0; #ifndef OS_WINDOWS if (gettimeofday(&tval,NULL)==0) current=tval.tv_sec+tval.tv_usec*0.000001; #endif t->rel=current - t->last; t->abs+=t->rel; t->last=current; // printf("%f %f %f\n",t->last,t->abs,t->rel); }; void Sequencer::setplayspeed(int speed){ playspeed=speed; realplayspeed=pow(10.0,speed/128.0); };