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more command stream playback work

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This commit is contained in:
tildearrow 2023-03-27 00:40:54 -05:00
parent 84e13cc91e
commit da7d67fa85
4 changed files with 158 additions and 29 deletions
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113
src/engine/cmdStream.cpp
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@ -21,6 +21,18 @@
#include "engine.h"
#include "../ta-log.h"
bool DivCSChannelState::doCall(unsigned int addr) {
if (callStackPos>=8) {
readPos=0;
return false;
}
callStack[callStackPos++]=readPos;
readPos=addr;
return true;
}
void DivCSPlayer::cleanup() {
delete b;
}
@ -29,18 +41,25 @@ bool DivCSPlayer::tick() {
bool ticked=false;
for (int i=0; i<e->getTotalChannelCount(); i++) {
bool sendVolume=false;
bool sendPitch=false;
if (chan[i].readPos==0) continue;
ticked=true;
chan[i].waitTicks--;
while (chan[i].waitTicks<=0) {
stream.seek(chan[i].readPos,SEEK_SET);
if (!stream.seek(chan[i].readPos,SEEK_SET)) {
logE("%d: access violation! $%x",i,chan[i].readPos);
chan[i].readPos=0;
break;
}
unsigned char next=stream.readC();
unsigned char command=0;
if (next<0xb3) { // note
e->dispatchCmd(DivCommand(DIV_CMD_NOTE_ON,i,next-60));
e->dispatchCmd(DivCommand(DIV_CMD_NOTE_ON,i,(int)next-60));
logV("%d: note on (%d)",i,(int)next-60);
chan[i].vibratoPos=0;
} else if (next>=0xd0 && next<=0xdf) {
command=fastCmds[next&15];
} else if (next>=0xe0 && next<=0xef) { // preset delay
@ -48,6 +67,7 @@ bool DivCSPlayer::tick() {
} else switch (next) {
case 0xb4: // note on null
e->dispatchCmd(DivCommand(DIV_CMD_NOTE_ON,i,DIV_NOTE_NULL));
chan[i].vibratoPos=0;
break;
case 0xb5: // note off
e->dispatchCmd(DivCommand(DIV_CMD_NOTE_OFF,i));
@ -66,17 +86,46 @@ bool DivCSPlayer::tick() {
case 0xf7:
command=stream.readC();
break;
case 0xf8:
logE("TODO: CALL");
case 0xf8: {
unsigned int callAddr=chan[i].readPos+2+stream.readS();
if (!chan[i].doCall(callAddr)) {
logE("%d: (callb16) stack error!",i);
}
break;
}
case 0xf6: {
unsigned int callAddr=chan[i].readPos+4+stream.readI();
if (!chan[i].doCall(callAddr)) {
logE("%d: (callb32) stack error!",i);
}
break;
}
case 0xf5: {
unsigned int callAddr=stream.readI();
if (!chan[i].doCall(callAddr)) {
logE("%d: (call) stack error!",i);
}
break;
}
case 0xf4: {
logE("%d: (callsym) not supported here!",i);
chan[i].readPos=0;
break;
}
case 0xf9:
logE("TODO: RET");
if (!chan[i].callStackPos) {
logE("%d: (ret) stack error!",i);
chan[i].readPos=0;
break;
}
chan[i].readPos=chan[i].callStack[--chan[i].callStackPos];
break;
case 0xfa:
logE("TODO: JMP");
chan[i].readPos=stream.readI();
break;
case 0xfb:
logE("TODO: RATE");
stream.readI();
break;
case 0xfc:
chan[i].waitTicks=(unsigned short)stream.readS();
@ -88,6 +137,11 @@ bool DivCSPlayer::tick() {
chan[i].waitTicks=1;
break;
case 0xff:
chan[i].readPos=0;
logI("%d: stop",i);
break;
default:
logE("%d: illegal instruction $%.2x! $%.x",i,next,chan[i].readPos);
chan[i].readPos=0;
break;
}
@ -101,15 +155,17 @@ bool DivCSPlayer::tick() {
case DIV_CMD_INSTRUMENT:
case DIV_CMD_HINT_VIBRATO_RANGE:
case DIV_CMD_HINT_VIBRATO_SHAPE:
case DIV_CMD_HINT_PITCH:
case DIV_CMD_HINT_VOLUME:
arg0=(unsigned char)stream.readC();
break;
case DIV_CMD_HINT_PITCH:
arg0=(signed char)stream.readC();
break;
case DIV_CMD_PANNING:
case DIV_CMD_HINT_VIBRATO:
case DIV_CMD_HINT_ARPEGGIO:
case DIV_CMD_HINT_PORTA:
arg0=(unsigned char)stream.readC();
arg0=(signed char)stream.readC();
arg1=(unsigned char)stream.readC();
break;
case DIV_CMD_PRE_PORTA:
@ -120,6 +176,14 @@ bool DivCSPlayer::tick() {
case DIV_CMD_HINT_VOL_SLIDE:
arg0=(short)stream.readS();
break;
case DIV_CMD_HINT_LEGATO:
arg0=(unsigned char)stream.readC();
if (arg0==0xff) {
arg0=DIV_NOTE_NULL;
} else {
arg0-=60;
}
break;
case DIV_CMD_SAMPLE_MODE:
case DIV_CMD_SAMPLE_FREQ:
case DIV_CMD_SAMPLE_BANK:
@ -218,6 +282,23 @@ bool DivCSPlayer::tick() {
case DIV_CMD_HINT_VOL_SLIDE:
chan[i].volSpeed=arg0;
break;
case DIV_CMD_HINT_PITCH:
chan[i].pitch=arg0;
sendPitch=true;
break;
case DIV_CMD_HINT_VIBRATO:
chan[i].vibratoDepth=arg0;
chan[i].vibratoRate=arg1;
sendPitch=true;
break;
case DIV_CMD_HINT_PORTA:
chan[i].portaTarget=arg0;
chan[i].portaSpeed=arg1;
break;
case DIV_CMD_HINT_LEGATO:
chan[i].note=arg0;
e->dispatchCmd(DivCommand(DIV_CMD_LEGATO,i,chan[i].note));
break;
default: // dispatch it
e->dispatchCmd(DivCommand((DivDispatchCmds)command,i,arg0,arg1));
break;
@ -238,6 +319,18 @@ bool DivCSPlayer::tick() {
e->dispatchCmd(DivCommand(DIV_CMD_VOLUME,i,chan[i].volume>>8));
}
if (sendPitch || chan[i].vibratoDepth!=0) {
if (chan[i].vibratoDepth>0) {
chan[i].vibratoPos+=chan[i].vibratoRate;
if (chan[i].vibratoPos>=64) chan[i].vibratoPos-=64;
}
e->dispatchCmd(DivCommand(DIV_CMD_PITCH,i,chan[i].pitch+(vibTable[chan[i].vibratoPos&63]*chan[i].vibratoDepth)/15));
}
if (chan[i].portaSpeed) {
e->dispatchCmd(DivCommand(DIV_CMD_NOTE_PORTA,i,chan[i].portaSpeed*(e->song.linearPitch==2?e->song.pitchSlideSpeed:1),chan[i].portaTarget));
}
}
return ticked;
@ -273,6 +366,10 @@ bool DivCSPlayer::init() {
chan[i].volume=chan[i].volMax;
}
for (int i=0; i<64; i++) {
vibTable[i]=127*sin(((double)i/64.0)*(2*M_PI));
}
return true;
}