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implement MIDI timecode output

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tildearrow 2023-05-10 02:57:59 -05:00
parent eb521a6dac
commit 826538e41b
5 changed files with 227 additions and 8 deletions
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77
src/engine/engine.cpp
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@ -2037,7 +2037,7 @@ String DivEngine::getPlaybackDebugInfo() {
"midiClockCycles: %d\n"
"midiClockDrift: %f\n"
"midiTimeCycles: %d\n"
"midiTimeDrift: %d\n"
"midiTimeDrift: %f\n"
"changeOrd: %d\n"
"changePos: %d\n"
"totalSeconds: %d\n"
@ -2190,6 +2190,8 @@ void DivEngine::playSub(bool preserveDrift, int goalRow) {
totalTicksR=0;
curMidiClock=0;
curMidiTime=0;
curMidiTimeCode=0;
curMidiTimePiece=0;
totalLoops=0;
lastLoopPos=-1;
}
@ -2403,9 +2405,74 @@ void DivEngine::play() {
for (int i=0; i<DIV_MAX_CHANS; i++) {
keyHit[i]=false;
}
curMidiTimePiece=0;
if (output) if (!skipping && output->midiOut!=NULL) {
int pos=curMidiClock;
output->midiOut->send(TAMidiMessage(TA_MIDI_POSITION,(pos>>7)&0x7f,pos&0x7f));
if (midiOutClock) {
output->midiOut->send(TAMidiMessage(TA_MIDI_POSITION,(curMidiClock>>7)&0x7f,curMidiClock&0x7f));
}
if (midiOutTime) {
TAMidiMessage msg;
msg.type=TA_MIDI_SYSEX;
msg.sysExData.reset(new unsigned char[10],std::default_delete<unsigned char[]>());
msg.sysExLen=10;
unsigned char* msgData=msg.sysExData.get();
int actualTime=curMidiTime;
int timeRate=midiOutTimeRate;
int drop=0;
if (timeRate<1 || timeRate>4) {
if (curSubSong->hz>=47.98 && curSubSong->hz<=48.02) {
timeRate=1;
} else if (curSubSong->hz>=49.98 && curSubSong->hz<=50.02) {
timeRate=2;
} else if (curSubSong->hz>=59.9 && curSubSong->hz<=60.11) {
timeRate=4;
} else {
timeRate=4;
}
}
switch (timeRate) {
case 1: // 24
msgData[5]=(actualTime/(60*60*24))%24;
msgData[6]=(actualTime/(60*24))%60;
msgData[7]=(actualTime/24)%60;
msgData[8]=actualTime%24;
break;
case 2: // 25
msgData[5]=(actualTime/(60*60*25))%24;
msgData[6]=(actualTime/(60*25))%60;
msgData[7]=(actualTime/25)%60;
msgData[8]=actualTime%25;
break;
case 3: // 29.97 (NTSC drop)
// drop
drop=((actualTime/(30*60))-(actualTime/(30*600)))*2;
actualTime+=drop;
msgData[5]=(actualTime/(60*60*30))%24;
msgData[6]=(actualTime/(60*30))%60;
msgData[7]=(actualTime/30)%60;
msgData[8]=actualTime%30;
break;
case 4: // 30 (NTSC non-drop)
default:
msgData[5]=(actualTime/(60*60*30))%24;
msgData[6]=(actualTime/(60*30))%60;
msgData[7]=(actualTime/30)%60;
msgData[8]=actualTime%30;
break;
}
msgData[5]|=(timeRate-1)<<5;
msgData[0]=0xf0;
msgData[1]=0x7f;
msgData[2]=0x7f;
msgData[3]=0x01;
msgData[4]=0x01;
msgData[9]=0xf7;
output->midiOut->send(msg);
}
output->midiOut->send(TAMidiMessage(TA_MIDI_MACHINE_PLAY,0,0));
}
BUSY_END;
@ -4410,6 +4477,8 @@ void DivEngine::quitDispatch() {
totalTicksR=0;
curMidiClock=0;
curMidiTime=0;
curMidiTimeCode=0;
curMidiTimePiece=0;
totalCmds=0;
lastCmds=0;
cmdsPerSecond=0;
@ -4436,6 +4505,8 @@ bool DivEngine::initAudioBackend() {
lowLatency=getConfInt("lowLatency",0);
metroVol=(float)(getConfInt("metroVol",100))/100.0f;
midiOutClock=getConfInt("midiOutClock",0);
midiOutTime=getConfInt("midiOutTime",0);
midiOutTimeRate=getConfInt("midiOutTimeRate",0);
midiOutProgramChange = getConfInt("midiOutProgramChange",0);
midiOutMode=getConfInt("midiOutMode",DIV_MIDI_MODE_NOTE);
if (metroVol<0.0f) metroVol=0.0f;