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- /*
- ZynAddSubFX - a software synthesizer
-
- Sequencer.C - The Sequencer
- Copyright (C) 2003-2004 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[ntrack]);
-
- // printf("%g %g\n",nextevent[ntrack].time,playtime[ntrack].abs);
-
- if (nextevent[ntrack].time<playtime[ntrack].abs) readevent(&miditrack[ntrack].track,&nextevent[ntrack].ev);
- else return(-1);
- if (nextevent[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[ntrack].time,playtime[ntrack].abs,nextevent[ntrack].ev.par2);
-
- *type=nextevent[ntrack].ev.type;
- *par1=nextevent[ntrack].ev.par1;
- *par2=nextevent[ntrack].ev.par2;
- *midich=nextevent[ntrack].ev.channel;
-
-
- double dt=nextevent[ntrack].ev.deltatime*0.0001*realplayspeed;
- printf("zzzzzzzzzzzzzz[%d] %d\n",ntrack,nextevent[ntrack].ev.deltatime);
- nextevent[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);
- };
-