| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * |
| * Copyright (C) 2005 Stepan Moskovchenko |
| * |
| * All files in this archive are subject to the GNU General Public License. |
| * See the file COPYING in the source tree root for full license agreement. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| |
| extern struct plugin_api * rb; |
| |
| long tempo=375000; |
| |
| |
| void setVol(int ch, int vol) |
| { |
| printf("\nvolume[%d] %d ==> %d", ch, chVol[ch], vol); |
| chVol[ch]=vol; |
| } |
| |
| void setPan(int ch, int pan) |
| { |
| printf("\npanning[%d] %d ==> %d", ch, chPanRight[ch], pan); |
| |
| chPanLeft[ch]=128-pan; |
| chPanRight[ch]=pan; |
| } |
| |
| |
| void setPatch(int ch, int pat) |
| { |
| chPat[ch]=pat; |
| } |
| |
| |
| /* |
| * Pitch Bend table, Computed by |
| * for i=0:127, fprintf('%d,', round(2^16*2^((i-64)/384))); end |
| * (When typed into Matlab) |
| * 16 bit pitch bend table |
| */ |
| long pitchTbl[]= |
| { |
| 58386,58491,58597,58703,58809,58915,59022,59128,59235,59342,59449,59557,59664,59772,59880,59988,60097,60205, |
| 60314,60423,60532,60642,60751,60861,60971,61081,61191,61302,61413,61524,61635,61746,61858,61970,62081,62194, |
| 62306,62419,62531,62644,62757,62871,62984,63098,63212,63326,63441,63555,63670,63785,63901,64016,64132,64248, |
| 64364,64480,64596,64713,64830,64947,65065,65182,65300,65418,65536,65654,65773,65892,66011,66130,66250,66369, |
| 66489,66609,66730,66850,66971,67092,67213,67335,67456,67578,67700,67823,67945,68068,68191,68314,68438,68561, |
| 68685,68809,68933,69058,69183,69308,69433,69558,69684,69810,69936,70062,70189,70316,70443,70570,70698,70825, |
| 70953,71082,71210,71339,71468,71597,71726,71856,71985,72115,72246,72376,72507,72638,72769,72901,73032,73164, |
| 73297,73429 |
| }; |
| |
| |
| void findDelta(struct SynthObject * so, int ch, int note) |
| { |
| |
| struct GWaveform * wf = patchSet[chPat[ch]]->waveforms[patchSet[chPat[ch]]->noteTable[note]]; |
| so->wf=wf; |
| so->delta = (((gustable[note]<<10) / (wf->rootFreq)) * wf->sampRate / (SAMPLE_RATE)); |
| so->delta = (so->delta * pitchTbl[chPW[ch]])>> 16; |
| } |
| |
| void setPW(int ch, int msb) |
| { |
| printf("\npitchw[%d] %d ==> %d", ch, chPW[ch], msb); |
| chPW[ch] = msb; |
| |
| int a=0; |
| for(a = 0; a<MAX_VOICES; a++) |
| { |
| if(voices[a].isUsed==1 && voices[a].ch == ch) |
| { |
| findDelta(&voices[a], ch, voices[a].note); |
| } |
| } |
| } |
| |
| void pressNote(int ch, int note, int vol) |
| { |
| |
| //Silences all channels but one, for easy debugging, for me. |
| /* |
| if(ch == 0) return; |
| if(ch == 1) return; |
| if(ch == 2) return; |
| if(ch == 3) return; |
| // if(ch == 4) return; |
| if(ch == 5) return; |
| if(ch == 6) return; |
| if(ch == 7) return; |
| if(ch == 8) return; |
| if(ch == 9) return; |
| if(ch == 10) return; |
| if(ch == 11) return; |
| if(ch == 12) return; |
| if(ch == 13) return; |
| if(ch == 14) return; |
| if(ch == 15) return; |
| */ |
| int a=0; |
| for(a=0; a<MAX_VOICES; a++) |
| { |
| if(voices[a].ch == ch && voices[a].note == note) |
| break; |
| |
| if(voices[a].isUsed==0) |
| break; |
| } |
| if(a==MAX_VOICES-1) |
| { |
| printf("\nOVERFLOW: Too many voices playing at once. No more left"); |
| printf("\nVOICE DUMP: "); |
| for(a=0; a<48; a++) |
| printf("\n#%d Ch=%d Note=%d curRate=%d curOffset=%d curPoint=%d targetOffset=%d", a, voices[a].ch, voices[a].note, voices[a].curRate, voices[a].curOffset, voices[a].curPoint, voices[a].targetOffset); |
| return; /* None available */ |
| } |
| voices[a].ch=ch; |
| voices[a].note=note; |
| voices[a].vol=vol; |
| voices[a].cp=0; |
| voices[a].state=STATE_ATTACK; |
| voices[a].decay=255; |
| |
| |
| voices[a].loopState=STATE_NONLOOPING; |
| voices[a].loopDir = LOOPDIR_FORWARD; |
| /* |
| * OKAY. Gt = Gus Table value |
| * rf = Root Frequency of wave |
| * SR = sound sampling rate |
| * sr = WAVE sampling rate |
| */ |
| |
| if(ch!=9) |
| { |
| findDelta(&voices[a], ch, note); |
| /* Turn it on */ |
| voices[a].isUsed=1; |
| setPoint(&voices[a], 0); |
| } else |
| { |
| if(drumSet[note]!=NULL) |
| { |
| if(note<35) |
| printf("\nNOTE LESS THAN 35, AND A DRUM PATCH EXISTS FOR THIS? WHAT THE HELL?"); |
| |
| struct GWaveform * wf = drumSet[note]->waveforms[0]; |
| voices[a].wf=wf; |
| voices[a].delta = (((gustable[note]<<10) / wf->rootFreq) * wf->sampRate / SAMPLE_RATE); |
| if(wf->mode & 28) |
| printf("\nWoah, a drum patch has a loop. Stripping the loop..."); |
| wf->mode = wf->mode & (255-28); |
| |
| /* Turn it on */ |
| voices[a].isUsed=1; |
| setPoint(&voices[a], 0); |
| |
| } else |
| { |
| printf("\nWarning: drum %d does not have a patch defined... Ignoring it", note); |
| } |
| } |
| } |
| |
| |
| void releaseNote(int ch, int note) |
| { |
| if(ch==9) |
| return; |
| |
| int a=0; |
| for(a=0; a<MAX_VOICES; a++) |
| { |
| if(voices[a].ch == ch && voices[a].note == note) |
| { |
| if((voices[a].wf->mode & 28)) |
| { |
| setPoint(&voices[a], 3); |
| } |
| } |
| } |
| } |
| |
| void sendEvent(struct Event * ev) |
| { |
| if( ((ev->status & 0xF0) == MIDI_CONTROL) && (ev->d1 == CTRL_VOLUME) ) |
| { |
| setVol((ev->status & 0xF), ev->d2); |
| return; |
| } |
| |
| if( ((ev->status & 0xF0) == MIDI_CONTROL) && (ev->d1 == CTRL_PANNING)) |
| { |
| setPan((ev->status & 0xF), ev->d2); |
| return; |
| } |
| |
| if(((ev->status & 0xF0) == MIDI_PITCHW)) |
| { |
| setPW((ev->status & 0xF), ev->d2); |
| return; |
| } |
| |
| if(((ev->status & 0xF0) == MIDI_NOTE_ON) && (ev->d2 != 0)) |
| { |
| pressNote(ev->status & 0x0F, ev->d1, ev->d2); |
| return; |
| } |
| |
| if(((ev->status & 0xF0) == MIDI_NOTE_ON) && (ev->d2 == 0)) /* Release by vol=0 */ |
| { |
| releaseNote(ev->status & 0x0F, ev->d1); |
| return; |
| } |
| |
| |
| if((ev->status & 0xF0) == MIDI_NOTE_OFF) |
| { |
| releaseNote(ev->status & 0x0F, ev->d1); |
| return; |
| } |
| |
| if((ev->status & 0xF0) == MIDI_PRGM) |
| { |
| if((ev->status & 0x0F) == 9) |
| printf("\nNOT PATCHING: Someone tried patching Channel 9 onto something?"); |
| else |
| setPatch(ev->status & 0x0F, ev->d1); |
| } |
| } |
| |
| |
| |
| |
| |
| int tick(struct MIDIfile * mf) |
| { |
| if(mf==NULL) |
| return 0; |
| |
| int a=0; |
| int tracksAdv=0; |
| for(a=0; a<mf->numTracks; a++) |
| { |
| struct Track * tr = mf->tracks[a]; |
| |
| if(tr == NULL) |
| printf("\nNULL TRACK: %d", a); |
| |
| |
| //BIG DEBUG STATEMENT |
| //printf("\nTrack %2d, Event = %4d of %4d, Delta = %5d, Next = %4d", a, tr->pos, tr->numEvents, tr->delta, getEvent(tr, tr->pos)->delta); |
| |
| |
| if(tr != NULL && (tr->pos < tr->numEvents)) |
| { |
| tr->delta++; |
| tracksAdv++; |
| while(getEvent(tr, tr->pos)->delta <= tr->delta) |
| { |
| struct Event * e = getEvent(tr, tr->pos); |
| |
| if(e->status != 0xFF) |
| { |
| sendEvent(e); |
| if(((e->status&0xF0) == MIDI_PRGM)) |
| { |
| printf("\nPatch Event, patch[%d] ==> %d", e->status&0xF, e->d1); |
| } |
| } |
| else |
| { |
| if(e->d1 == 0x51) |
| { |
| tempo = (((short)e->evData[0])<<16)|(((short)e->evData[1])<<8)|(e->evData[2]); |
| printf("\nMeta-Event: Tempo Set = %d", tempo); |
| bpm=mf->div*1000000/tempo; |
| numberOfSamples=SAMPLE_RATE/bpm; |
| |
| } |
| } |
| tr->delta = 0; |
| tr->pos++; |
| if(tr->pos>=(tr->numEvents-1)) |
| break; |
| } |
| } |
| } |
| |
| if(tracksAdv != 0) |
| return 1; |
| else |
| return 0; |
| } |