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Merge branch 'master' into es5506_alt

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cam900 2022-10-09 20:05:15 +09:00 • committed by GitHub
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57 changed files with 3520 additions and 397 deletions
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1
src/engine/platform/ay.cpp
View file

@ -776,6 +776,7 @@ void DivPlatformAY8910::setFlags(const DivConfig& flags) {
if (extMode) {
chipClock=extClock;
rate=chipClock/extDiv;
clockSel=false;
} else {
clockSel=flags.getBool("halfClock",false);
switch (flags.getInt("clockSel",0)) {

25
src/engine/platform/c64.cpp
View file

@ -129,18 +129,6 @@ void DivPlatformC64::tick(bool sysTick) {
rWrite(i*7+2,chan[i].duty&0xff);
rWrite(i*7+3,chan[i].duty>>8);
}
if (sysTick) {
if (chan[i].testWhen>0) {
if (--chan[i].testWhen<1) {
if (!chan[i].resetMask && !chan[i].inPorta) {
DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_C64);
rWrite(i*7+5,0);
rWrite(i*7+6,0);
rWrite(i*7+4,(chan[i].wave<<4)|(ins->c64.noTest?0:8)|(chan[i].test<<3)|(chan[i].ring<<2)|(chan[i].sync<<1));
}
}
}
}
if (chan[i].std.wave.had) {
chan[i].wave=chan[i].std.wave.val;
rWrite(i*7+4,(chan[i].wave<<4)|(chan[i].test<<3)|(chan[i].ring<<2)|(chan[i].sync<<1)|(int)(chan[i].active));
@ -173,6 +161,19 @@ void DivPlatformC64::tick(bool sysTick) {
rWrite(i*7+4,(chan[i].wave<<4)|(chan[i].test<<3)|(chan[i].ring<<2)|(chan[i].sync<<1)|(int)(chan[i].active));
}
if (sysTick) {
if (chan[i].testWhen>0) {
if (--chan[i].testWhen<1) {
if (!chan[i].resetMask && !chan[i].inPorta) {
DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_C64);
rWrite(i*7+5,0);
rWrite(i*7+6,0);
rWrite(i*7+4,(chan[i].wave<<4)|(ins->c64.noTest?0:8)|(chan[i].test<<3)|(chan[i].ring<<2)|(chan[i].sync<<1));
}
}
}
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,8,chan[i].pitch2,chipClock,CHIP_FREQBASE);
if (chan[i].freq>0xffff) chan[i].freq=0xffff;

8
src/engine/platform/gb.cpp
View file

@ -169,7 +169,9 @@ void DivPlatformGB::tick(bool sysTick) {
if (chan[i].baseFreq>255) chan[i].baseFreq=255;
if (chan[i].baseFreq<0) chan[i].baseFreq=0;
} else {
chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val,24));
if (!chan[i].inPorta) {
chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val,24));
}
}
chan[i].freqChanged=true;
}
@ -313,6 +315,9 @@ void DivPlatformGB::tick(bool sysTick) {
rWrite(16+i*5+3,(2048-chan[i].freq)&0xff);
rWrite(16+i*5+4,(((2048-chan[i].freq)>>8)&7)|((chan[i].keyOn||chan[i].keyOff)?0x80:0x00)|((chan[i].soundLen<63)<<6));
}
if (enoughAlready) { // more compat garbage
rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(chan[i].soundLen&63)));
}
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
chan[i].freqChanged=false;
@ -645,6 +650,7 @@ void DivPlatformGB::setFlags(const DivConfig& flags) {
model=GB_MODEL_AGB;
break;
}
enoughAlready=flags.getBool("enoughAlready",false);
}
int DivPlatformGB::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {

1
src/engine/platform/gb.h
View file

@ -76,6 +76,7 @@ class DivPlatformGB: public DivDispatch {
DivDispatchOscBuffer* oscBuf[4];
bool isMuted[4];
bool antiClickEnabled;
bool enoughAlready;
unsigned char lastPan;
DivWaveSynth ws;
struct QueuedWrite {

43
src/engine/platform/msm5232.cpp
View file

@ -17,6 +17,7 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _USE_MATH_DEFINES
#include "msm5232.h"
#include "../engine.h"
#include <math.h>
@ -52,13 +53,26 @@ void DivPlatformMSM5232::acquire(short* bufL, short* bufR, size_t start, size_t
regPool[w.addr&0x0f]=w.val;
writes.pop();
}
memset(temp,0,16*sizeof(short));
/*for (int i=0; i<8; i++) {
oscBuf[i]->data[oscBuf[i]->needle++]=CLAMP((pce->channel[i].blip_prev_samp[0]+pce->channel[i].blip_prev_samp[1])<<1,-32768,32767);
}*/
for (int i=0; i<8; i++) {
int o=(
((regPool[12+(i>>4)]&1)?((msm->vo16[i]*partVolume[3+(i&4)])>>8):0)+
((regPool[12+(i>>4)]&2)?((msm->vo8[i]*partVolume[2+(i&4)])>>8):0)+
((regPool[12+(i>>4)]&4)?((msm->vo4[i]*partVolume[1+(i&4)])>>8):0)+
((regPool[12+(i>>4)]&8)?((msm->vo2[i]*partVolume[i&4])>>8):0)
)<<3;
oscBuf[i]->data[oscBuf[i]->needle++]=CLAMP(o,-32768,32767);
}
msm->sound_stream_update(temp);
clockDriftLFOPos+=clockDriftLFOSpeed;
clockDriftLFOPos&=(1U<<21)-1;
clockDriftAccum+=clockDriftLFOWave[clockDriftLFOPos>>13];
if (clockDriftAccum>=2048) {
clockDriftAccum-=2048;
} else {
memset(temp,0,16*sizeof(short));
msm->sound_stream_update(temp);
}
//printf("tempL: %d tempR: %d\n",tempL,tempR);
bufL[h]=0;
@ -229,10 +243,22 @@ int DivPlatformMSM5232::dispatch(DivCommand c) {
}
break;
}
case DIV_CMD_WAVE:
groupControl[c.chan>>2]=c.value&0x1f;
updateGroup[c.chan>>2]=true;
break;
case DIV_CMD_STD_NOISE_MODE:
chan[c.chan].noise=c.value;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_FM_AR:
groupAR[c.chan>>2]=attackMap[c.value&7];
updateGroupAR[c.chan>>2]=true;
break;
case DIV_CMD_FM_DR:
groupDR[c.chan>>2]=decayMap[c.value&15];
updateGroupDR[c.chan>>2]=true;
break;
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_LINEAR(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
chan[c.chan].freqChanged=true;
@ -310,6 +336,8 @@ void DivPlatformMSM5232::reset() {
cycles=0;
curChan=-1;
delay=500;
clockDriftLFOPos=0;
clockDriftAccum=0;
for (int i=0; i<2; i++) {
groupControl[i]=15|(groupEnv[i]?0x20:0);
@ -381,6 +409,11 @@ void DivPlatformMSM5232::setFlags(const DivConfig& flags) {
capacitance[6]*0.000000001,
capacitance[7]*0.000000001
);
for (int i=0; i<256; i++) {
clockDriftLFOWave[i]=(1.0+sin(M_PI*(double)i/128.0))*flags.getInt("vibDepth",0.0f);
}
clockDriftLFOSpeed=flags.getInt("vibSpeed",0);
}
void DivPlatformMSM5232::poke(unsigned int addr, unsigned short val) {

4
src/engine/platform/msm5232.h
View file

@ -57,6 +57,7 @@ class DivPlatformMSM5232: public DivDispatch {
DivDispatchOscBuffer* oscBuf[8];
int partVolume[8];
int initPartVolume[8];
int clockDriftLFOWave[256];
double capacitance[8];
bool isMuted[8];
bool updateGroup[2];
@ -73,7 +74,8 @@ class DivPlatformMSM5232: public DivDispatch {
};
std::queue<QueuedWrite> writes;
int cycles, curChan, delay, detune;
int cycles, curChan, delay, detune, clockDriftAccum;
unsigned int clockDriftLFOPos, clockDriftLFOSpeed;
short temp[16];
msm5232_device* msm;
unsigned char regPool[128];

2
src/engine/platform/msm6258.cpp
View file

@ -167,7 +167,7 @@ int DivPlatformMSM6258::dispatch(DivCommand c) {
chan[c.chan].sample=-1;
chan[c.chan].macroInit(NULL);
chan[c.chan].outVol=chan[c.chan].vol;
if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
if ((12*sampleBank+c.value%12)<0 || (12*sampleBank+c.value%12)>=parent->song.sampleLen) {
break;
}
//DivSample* s=parent->getSample(12*sampleBank+c.value%12);

2
src/engine/platform/msm6295.cpp
View file

@ -158,7 +158,7 @@ int DivPlatformMSM6295::dispatch(DivCommand c) {
chan[c.chan].sample=-1;
chan[c.chan].macroInit(NULL);
chan[c.chan].outVol=chan[c.chan].vol;
if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
if ((12*sampleBank+c.value%12)<0 || (12*sampleBank+c.value%12)>=parent->song.sampleLen) {
break;
}
//DivSample* s=parent->getSample(12*sampleBank+c.value%12);

10
src/engine/platform/nes.cpp
View file

@ -416,10 +416,12 @@ int DivPlatformNES::dispatch(DivCommand c) {
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
if (c.chan==2) {
rWrite(0x4000+c.chan*4,0xff);
} else {
rWrite(0x4000+c.chan*4,0x30|chan[c.chan].vol|((chan[c.chan].duty&3)<<6));
if (!parent->song.brokenOutVol2) {
if (c.chan==2) {
rWrite(0x4000+c.chan*4,0xff);
} else {
rWrite(0x4000+c.chan*4,0x30|chan[c.chan].vol|((chan[c.chan].duty&3)<<6));
}
}
break;
case DIV_CMD_NOTE_OFF:

5
src/engine/platform/sms.cpp
View file

@ -19,6 +19,7 @@
#include "sms.h"
#include "../engine.h"
#include "../../ta-log.h"
#include <math.h>
#define rWrite(a,v) {if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(0x200+a,v);}}}
@ -248,7 +249,9 @@ int DivPlatformSMS::dispatch(DivCommand c) {
chan[c.chan].actualNote=c.value;
}
chan[c.chan].active=true;
rWrite(0,0x90|c.chan<<5|(isMuted[c.chan]?15:(15-(chan[c.chan].vol&15))));
if (!parent->song.brokenOutVol2) {
rWrite(0,0x90|c.chan<<5|(isMuted[c.chan]?15:(15-(chan[c.chan].vol&15))));
}
chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_STD));
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;

94
src/engine/platform/snes.cpp
View file

@ -69,14 +69,16 @@ void DivPlatformSNES::acquire(short* bufL, short* bufR, size_t start, size_t len
short out[2];
short chOut[16];
for (size_t h=start; h<start+len; h++) {
// TODO: delay
if (!writes.empty()) {
QueuedWrite w=writes.front();
dsp.write(w.addr,w.val);
regPool[w.addr&0x7f]=w.val;
writes.pop();
if (--delay<=0) {
delay=0;
if (!writes.empty()) {
QueuedWrite w=writes.front();
dsp.write(w.addr,w.val);
regPool[w.addr&0x7f]=w.val;
writes.pop();
delay=(w.addr==0x5c)?8:1;
}
}
dsp.set_output(out,1);
dsp.run(32);
dsp.get_voice_outputs(chOut);
@ -159,7 +161,30 @@ void DivPlatformSNES::tick(bool sysTick) {
}
}
if (chan[i].std.vol.had || chan[i].std.panL.had || chan[i].std.panR.had || hasInverted) {
writeOutVol(i);
chan[i].shallWriteVol=true;
}
if (chan[i].std.ex2.had) {
if (chan[i].std.ex2.val&0x80) {
switch (chan[i].std.ex2.val&0x60) {
case 0x00:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LINEAR;
break;
case 0x20:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LOG;
break;
case 0x40:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_LINEAR;
break;
case 0x60:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_INVLOG;
break;
}
chan[i].state.gain=chan[i].std.ex2.val&31;
} else {
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_DIRECT;
chan[i].state.gain=chan[i].std.ex2.val&127;
}
chan[i].shallWriteEnv=true;
}
if (chan[i].setPos) {
// force keyon
@ -173,6 +198,8 @@ void DivPlatformSNES::tick(bool sysTick) {
updateWave(i);
}
}
}
for (int i=0; i<8; i++) {
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
DivSample* s=parent->getSample(chan[i].sample);
double off=(s->centerRate>=1)?((double)s->centerRate/8363.0):1.0;
@ -205,6 +232,7 @@ void DivPlatformSNES::tick(bool sysTick) {
sampleMem[tabAddr+2]=loop&0xff;
sampleMem[tabAddr+3]=loop>>8;
kon|=(1<<i);
koff|=(1<<i);
chan[i].keyOn=false;
}
if (chan[i].keyOff) {
@ -220,6 +248,9 @@ void DivPlatformSNES::tick(bool sysTick) {
}
}
}
if (koff!=0) {
rWrite(0x5c,koff);
}
if (writeControl) {
unsigned char control=(noiseFreq&0x1f)|(echoOn?0:0x20);
rWrite(0x6c,control);
@ -267,11 +298,24 @@ void DivPlatformSNES::tick(bool sysTick) {
rWrite(0x4d,echoBits);
writeEcho=false;
}
for (int i=0; i<8; i++) {
if (chan[i].shallWriteEnv) {
writeEnv(i);
chan[i].shallWriteEnv=false;
}
}
if (koff!=0) {
rWrite(0x5c,0);
}
if (kon!=0) {
rWrite(0x4c,kon);
}
// always write KOFF as it's constantly polled
rWrite(0x5c,koff);
for (int i=0; i<8; i++) {
if (chan[i].shallWriteVol) {
writeOutVol(i);
chan[i].shallWriteVol=false;
}
}
}
int DivPlatformSNES::dispatch(DivCommand c) {
@ -301,7 +345,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
}
chan[c.chan].active=true;
if (chan[c.chan].insChanged || chan[c.chan].state.sus) {
writeEnv(c.chan);
chan[c.chan].shallWriteEnv=true;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(NOTE_FREQUENCY(c.value));
@ -318,7 +362,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
if (chan[c.chan].state.sus) {
writeEnv(c.chan);
chan[c.chan].shallWriteEnv=true;
} else {
chan[c.chan].macroInit(NULL);
}
@ -328,7 +372,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
if (chan[c.chan].state.sus) {
writeEnv(c.chan);
chan[c.chan].shallWriteEnv=true;
}
chan[c.chan].std.release();
break;
@ -346,7 +390,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
writeOutVol(c.chan);
chan[c.chan].shallWriteVol=true;
}
}
break;
@ -356,7 +400,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
case DIV_CMD_PANNING:
chan[c.chan].panL=c.value>>1;
chan[c.chan].panR=c.value2>>1;
writeOutVol(c.chan);
chan[c.chan].shallWriteVol=true;
break;
case DIV_CMD_PITCH:
chan[c.chan].pitch=c.value;
@ -418,7 +462,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
case DIV_CMD_SNES_INVERT:
chan[c.chan].invertL=(c.value>>4);
chan[c.chan].invertR=c.chan&15;
writeOutVol(c.chan);
chan[c.chan].shallWriteVol=true;
break;
case DIV_CMD_SNES_GAIN_MODE:
if (c.value) {
@ -443,7 +487,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
} else {
chan[c.chan].state.useEnv=true;
}
writeEnv(c.chan);
chan[c.chan].shallWriteEnv=true;
break;
case DIV_CMD_SNES_GAIN:
if (chan[c.chan].state.gainMode==DivInstrumentSNES::GAIN_MODE_DIRECT) {
@ -451,7 +495,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
} else {
chan[c.chan].state.gain=c.value&0x1f;
}
if (!chan[c.chan].state.useEnv) writeEnv(c.chan);
if (!chan[c.chan].state.useEnv) chan[c.chan].shallWriteEnv=true;
break;
case DIV_CMD_STD_NOISE_FREQ:
noiseFreq=c.value&0x1f;
@ -459,19 +503,19 @@ int DivPlatformSNES::dispatch(DivCommand c) {
break;
case DIV_CMD_FM_AR:
chan[c.chan].state.a=c.value&15;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
if (chan[c.chan].state.useEnv) chan[c.chan].shallWriteEnv=true;
break;
case DIV_CMD_FM_DR:
chan[c.chan].state.d=c.value&7;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
if (chan[c.chan].state.useEnv) chan[c.chan].shallWriteEnv=true;
break;
case DIV_CMD_FM_SL:
chan[c.chan].state.s=c.value&7;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
if (chan[c.chan].state.useEnv) chan[c.chan].shallWriteEnv=true;
break;
case DIV_CMD_FM_RR:
chan[c.chan].state.r=c.value&0x1f;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
if (chan[c.chan].state.useEnv) chan[c.chan].shallWriteEnv=true;
break;
case DIV_CMD_SNES_ECHO:
chan[c.chan].echo=c.value;
@ -582,7 +626,7 @@ void DivPlatformSNES::writeEnv(int ch) {
void DivPlatformSNES::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
writeOutVol(ch);
chan[ch].shallWriteVol=true;
}
void DivPlatformSNES::forceIns() {
@ -760,6 +804,10 @@ void DivPlatformSNES::renderSamples() {
if (actualLength>0) {
sampleOff[i]=memPos;
memcpy(&copyOfSampleMem[memPos],s->dataBRR,actualLength);
// inject loop if needed
if (s->loop) {
copyOfSampleMem[memPos+actualLength-9]|=3;
}
memPos+=actualLength;
}
if (actualLength<length) {

5
src/engine/platform/snes.h
View file

@ -33,7 +33,7 @@ class DivPlatformSNES: public DivDispatch {
int sample, wave, ins;
int note;
int panL, panR;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, useWave, setPos, noise, echo, pitchMod, invertL, invertR;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, useWave, setPos, noise, echo, pitchMod, invertL, invertR, shallWriteVol, shallWriteEnv;
int vol, outVol;
int wtLen;
DivInstrumentSNES state;
@ -68,6 +68,8 @@ class DivPlatformSNES: public DivDispatch {
pitchMod(false),
invertL(false),
invertR(false),
shallWriteVol(false),
shallWriteEnv(false),
vol(127),
outVol(127),
wtLen(16) {}
@ -77,6 +79,7 @@ class DivPlatformSNES: public DivDispatch {
bool isMuted[8];
int globalVolL, globalVolR;
unsigned char noiseFreq;
signed char delay;
signed char echoVolL, echoVolR, echoFeedback;
signed char echoFIR[8];
unsigned char echoDelay;

8
src/engine/platform/sound/oki/msm5232.cpp
View file

@ -596,10 +596,10 @@ void msm5232_device::TG_group_advance(int groupidx)
/* calculate signed output */
if (!voi->mute) {
o16 += ( (out16-(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o8 += ( (out8 -(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o4 += ( (out4 -(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o2 += ( (out2 -(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o16 += vo16[groupidx*4+(4-i)] = ( (out16-(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o8 += vo8 [groupidx*4+(4-i)] = ( (out8 -(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o4 += vo4 [groupidx*4+(4-i)] = ( (out4 -(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
o2 += vo2 [groupidx*4+(4-i)] = ( (out2 -(1<<(STEP_SH-1))) * voi->egvol) >> STEP_SH;
if (i == 1 && groupidx == 1)
{

5
src/engine/platform/sound/oki/msm5232.h
View file

@ -33,6 +33,11 @@ public:
int get_rate();
int vo16[8];
int vo8[8];
int vo4[8];
int vo2[8];
private:
struct VOICE {
uint8_t mode;

361
src/engine/platform/sound/t6w28/T6W28_Apu.cpp Normal file
View file

@ -0,0 +1,361 @@
// T6W28_Snd_Emu
#include "T6W28_Apu.h"
#undef require
#define require( expr ) assert( expr )
/* Copyright (C) 2003-2006 Shay Green. This module is free software; you
can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version. This
module 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 Lesser General Public License for
more details. You should have received a copy of the GNU Lesser General
Public License along with this module; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
// T6W28_Osc
namespace MDFN_IEN_NGP
{
T6W28_Osc::T6W28_Osc()
{
outputs [0] = NULL; // always stays NULL
outputs [1] = NULL;
outputs [2] = NULL;
outputs [3] = NULL;
}
void T6W28_Osc::reset()
{
delay = 0;
last_amp_left = 0;
last_amp_right = 0;
volume_left = 0;
volume_right = 0;
}
// T6W28_Square
blip_inline void T6W28_Square::reset()
{
period = 0;
phase = 0;
T6W28_Osc::reset();
}
void T6W28_Square::run( sms_time_t time, sms_time_t end_time )
{
if ((!volume_left && !volume_right) || period <= 128 )
{
// ignore 16kHz and higher
if ( last_amp_left )
{
synth->offset( time, -last_amp_left, outputs[2] );
last_amp_left = 0;
}
if ( last_amp_right )
{
synth->offset( time, -last_amp_right, outputs[1] );
last_amp_right = 0;
}
time += delay;
if ( !period )
{
time = end_time;
}
else if ( time < end_time )
{
// keep calculating phase
int count = (end_time - time + period - 1) / period;
phase = (phase + count) & 1;
time += count * period;
}
}
else
{
int amp_left = phase ? volume_left : -volume_left;
int amp_right = phase ? volume_right : -volume_right;
{
int delta_left = amp_left - last_amp_left;
int delta_right = amp_right - last_amp_right;
if ( delta_left )
{
last_amp_left = amp_left;
synth->offset( time, delta_left, outputs[2] );
}
if ( delta_right )
{
last_amp_right = amp_right;
synth->offset( time, delta_right, outputs[1] );
}
}
time += delay;
if ( time < end_time )
{
Blip_Buffer* const output_left = this->outputs[2];
Blip_Buffer* const output_right = this->outputs[1];
int delta_left = amp_left * 2;
int delta_right = amp_right * 2;
do
{
delta_left = -delta_left;
delta_right = -delta_right;
synth->offset_inline( time, delta_left, output_left );
synth->offset_inline( time, delta_right, output_right );
time += period;
phase ^= 1;
}
while ( time < end_time );
this->last_amp_left = phase ? volume_left : -volume_left;
this->last_amp_right = phase ? volume_right : -volume_right;
}
}
delay = time - end_time;
}
// T6W28_Noise
static const int noise_periods [3] = { 0x100, 0x200, 0x400 };
blip_inline void T6W28_Noise::reset()
{
period = &noise_periods [0];
shifter = 0x4000;
tap = 13;
period_extra = 0;
T6W28_Osc::reset();
}
void T6W28_Noise::run( sms_time_t time, sms_time_t end_time )
{
int amp_left = volume_left;
int amp_right = volume_right;
if ( shifter & 1 )
{
amp_left = -amp_left;
amp_right = -amp_right;
}
{
int delta_left = amp_left - last_amp_left;
int delta_right = amp_right - last_amp_right;
if ( delta_left )
{
last_amp_left = amp_left;
synth.offset( time, delta_left, outputs[2] );
}
if ( delta_right )
{
last_amp_right = amp_right;
synth.offset( time, delta_right, outputs[1] );
}
}
time += delay;
if ( !volume_left && !volume_right )
time = end_time;
if ( time < end_time )
{
Blip_Buffer* const output_left = this->outputs[2];
Blip_Buffer* const output_right = this->outputs[1];
unsigned l_shifter = this->shifter;
int delta_left = amp_left * 2;
int delta_right = amp_right * 2;
int l_period = *this->period * 2;
if ( !l_period )
l_period = 16;
do
{
int changed = (l_shifter + 1) & 2; // set if prev and next bits differ
l_shifter = (((l_shifter << 14) ^ (l_shifter << tap)) & 0x4000) | (l_shifter >> 1);
if ( changed )
{
delta_left = -delta_left;
synth.offset_inline( time, delta_left, output_left );
delta_right = -delta_right;
synth.offset_inline( time, delta_right, output_right );
}
time += l_period;
}
while ( time < end_time );
this->shifter = l_shifter;
this->last_amp_left = delta_left >> 1;
this->last_amp_right = delta_right >> 1;
}
delay = time - end_time;
}
// T6W28_Apu
T6W28_Apu::T6W28_Apu()
{
for ( int i = 0; i < 3; i++ )
{
squares [i].synth = &square_synth;
oscs [i] = &squares [i];
}
oscs [3] = &noise;
volume( 1.0 );
reset();
}
T6W28_Apu::~T6W28_Apu()
{
}
void T6W28_Apu::osc_output( int index, Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right )
{
require( (unsigned) index < osc_count );
require( (center && left && right) || (!center && !left && !right) );
T6W28_Osc& osc = *oscs [index];
osc.outputs [1] = right;
osc.outputs [2] = left;
osc.outputs [3] = center;
}
void T6W28_Apu::output( Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right )
{
for ( int i = 0; i < osc_count; i++ )
osc_output( i, center, left, right );
}
void T6W28_Apu::reset()
{
last_time = 0;
latch_left = 0;
latch_right = 0;
squares [0].reset();
squares [1].reset();
squares [2].reset();
noise.reset();
}
void T6W28_Apu::run_until( sms_time_t end_time )
{
require( end_time >= last_time ); // end_time must not be before previous time
if ( end_time > last_time )
{
// run oscillators
for ( int i = 0; i < osc_count; ++i )
{
T6W28_Osc& osc = *oscs [i];
if ( osc.outputs[1] )
{
if ( i < 3 )
squares [i].run( last_time, end_time );
else
noise.run( last_time, end_time );
}
}
last_time = end_time;
}
}
bool T6W28_Apu::end_frame( sms_time_t end_time )
{
if ( end_time > last_time )
run_until( end_time );
assert( last_time >= end_time );
last_time -= end_time;
return(1);
}
static const unsigned char volumes [16] = {
// volumes [i] = 64 * pow( 1.26, 15 - i ) / pow( 1.26, 15 )
64, 50, 39, 31, 24, 19, 15, 12, 9, 7, 5, 4, 3, 2, 1, 0
};
void T6W28_Apu::write_data_left( sms_time_t time, int data )
{
require( (unsigned) data <= 0xFF );
run_until( time );
if ( data & 0x80 )
latch_left = data;
int index = (latch_left >> 5) & 3;
if ( latch_left & 0x10 )
{
oscs [index]->volume_left = volumes [data & 15];
}
else if ( index < 3 )
{
T6W28_Square& sq = squares [index];
if ( data & 0x80 )
sq.period = (sq.period & 0xFF00) | (data << 4 & 0x00FF);
else
sq.period = (sq.period & 0x00FF) | (data << 8 & 0x3F00);
}
}
void T6W28_Apu::write_data_right( sms_time_t time, int data )
{
require( (unsigned) data <= 0xFF );
run_until( time );
if ( data & 0x80 )
latch_right = data;
int index = (latch_right >> 5) & 3;
//printf("%d\n", index);
if ( latch_right & 0x10 )
{
oscs [index]->volume_right = volumes [data & 15];
}
else if ( index == 2 )
{
if ( data & 0x80 )
noise.period_extra = (noise.period_extra & 0xFF00) | (data << 4 & 0x00FF);
else
noise.period_extra = (noise.period_extra & 0x00FF) | (data << 8 & 0x3F00);
}
else if(index == 3)
{
int select = data & 3;
if ( select < 3 )
noise.period = &noise_periods [select];
else
noise.period = &noise.period_extra;
int const tap_disabled = 16;
noise.tap = (data & 0x04) ? 13 : tap_disabled;
noise.shifter = 0x4000;
}
}
}

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// T6W28_Snd_Emu
#ifndef SMS_APU_H
#define SMS_APU_H
namespace MDFN_IEN_NGP
{
typedef long sms_time_t; // clock cycle count
}
#include "T6W28_Oscs.h"
namespace MDFN_IEN_NGP
{
typedef struct
{
int sq_period[3];
int sq_phase[3];
unsigned int noise_period;
unsigned int noise_period_extra;
unsigned int noise_shifter;
unsigned int noise_tap;
int delay[4];
int volume_left[4];
int volume_right[4];
unsigned char latch_left, latch_right;
} T6W28_ApuState;
class T6W28_Apu {
public:
// Outputs can be assigned to a single buffer for mono output, or to three
// buffers for stereo output (using Stereo_Buffer to do the mixing).
// Assign all oscillator outputs to specified buffer(s). If buffer
// is NULL, silences all oscillators.
void output( Blip_Buffer* mono );
void output( Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right );
// Assign single oscillator output to buffer(s). Valid indicies are 0 to 3,
// which refer to Square 1, Square 2, Square 3, and Noise. If buffer is NULL,
// silences oscillator.
enum { osc_count = 4 };
void osc_output( int index, Blip_Buffer* mono );
void osc_output( int index, Blip_Buffer* center, Blip_Buffer* left, Blip_Buffer* right );
// Reset oscillators and internal state
void reset();
// Write to data port
void write_data_left( sms_time_t, int );
void write_data_right( sms_time_t, int );
// Run all oscillators up to specified time, end current frame, then
// start a new frame at time 0. Returns true if any oscillators added
// sound to one of the left/right buffers, false if they only added
// to the center buffer.
bool end_frame( sms_time_t );
public:
T6W28_Apu();
~T6W28_Apu();
private:
// noncopyable
T6W28_Apu( const T6W28_Apu& );
T6W28_Apu& operator = ( const T6W28_Apu& );
T6W28_Osc* oscs [osc_count];
T6W28_Square squares [3];
//T6W28_Square::Synth square_synth; // used by squares
sms_time_t last_time;
int latch_left, latch_right;
T6W28_Noise noise;
void run_until( sms_time_t );
};
inline void T6W28_Apu::output( Blip_Buffer* b ) { output( b, b, b ); }
inline void T6W28_Apu::osc_output( int i, Blip_Buffer* b ) { osc_output( i, b, b, b ); }
}
#endif

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// Private oscillators used by T6W28_Apu
// T6W28_Snd_Emu
#ifndef SMS_OSCS_H
#define SMS_OSCS_H
namespace MDFN_IEN_NGP
{
struct T6W28_Osc
{
int output_select;
int delay;
int last_amp_left;
int last_amp_right;
int volume_left;
int volume_right;
T6W28_Osc();
void reset();
};
struct T6W28_Square : T6W28_Osc
{
int period;
int phase;
void reset();
void run( sms_time_t, sms_time_t );
};
struct T6W28_Noise : T6W28_Osc
{
const int* period;
int period_extra;
unsigned shifter;
unsigned tap;
void reset();
void run( sms_time_t, sms_time_t );
};
}
#endif

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/******************************************************************************/
/* Mednafen Virtual Boy Emulation Module */
/******************************************************************************/
/* vsu.cpp:
** Copyright (C) 2010-2016 Mednafen Team
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License
** as published by the Free Software Foundation; either version 2
** of the License, or (at your option) any later version.
**
** 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 for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software Foundation, Inc.,
** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "vsu.h"
#include <stdio.h>
#include <assert.h>
#include <string.h>
static const unsigned int Tap_LUT[8] = { 15 - 1, 11 - 1, 14 - 1, 5 - 1, 9 - 1, 7 - 1, 10 - 1, 12 - 1 };
#define MDFN_UNLIKELY(x) x
VSU::VSU()
{
for(int ch = 0; ch < 6; ch++)
{
for(int lr = 0; lr < 2; lr++)
last_output[ch][lr] = 0;
}
}
VSU::~VSU()
{
}
void VSU::SetSoundRate(double rate)
{
/*
for(int y = 0; y < 2; y++)
{
sbuf[y].set_sample_rate(rate ? rate : 44100, 50);
sbuf[y].clock_rate((long)(VB_MASTER_CLOCK / 4));
sbuf[y].bass_freq(20);
}
*/
}
void VSU::Power(void)
{
SweepControl = 0;
SweepModCounter = 0;
SweepModClockDivider = 1;
for(int ch = 0; ch < 6; ch++)
{
IntlControl[ch] = 0;
LeftLevel[ch] = 0;
RightLevel[ch] = 0;
Frequency[ch] = 0;
EnvControl[ch] = 0;
RAMAddress[ch] = 0;
EffFreq[ch] = 0;
Envelope[ch] = 0;
WavePos[ch] = 0;
FreqCounter[ch] = 1;
IntervalCounter[ch] = 0;
EnvelopeCounter[ch] = 1;
EffectsClockDivider[ch] = 4800;
IntervalClockDivider[ch] = 4;
EnvelopeClockDivider[ch] = 4;
LatcherClockDivider[ch] = 120;
}
ModWavePos = 0;
NoiseLatcherClockDivider = 120;
NoiseLatcher = 0;
lfsr = 0;
memset(WaveData, 0, sizeof(WaveData));
memset(ModData, 0, sizeof(ModData));
last_ts = 0;
}
void VSU::Write(int timestamp, unsigned int A, unsigned char V)
{
if(MDFN_UNLIKELY(A & 0x3))
{
return;
}
//
//
A &= 0x7FF;
//Update(timestamp);
//printf("VSU Write: %d, %08x %02x\n", timestamp, A, V);
if(A < 0x280)
WaveData[A >> 7][(A >> 2) & 0x1F] = V & 0x3F;
else if(A < 0x400)
{
//if(A >= 0x300)
//printf("Modulation mirror write? %08x %02x\n", A, V);
ModData[(A >> 2) & 0x1F] = V;
}
else if(A < 0x600)
{
int ch = (A >> 6) & 0xF;
//if(ch < 6)
//printf("Ch: %d, Reg: %d, Value: %02x\n", ch, (A >> 2) & 0xF, V);
if(ch > 5)
{
if(A == 0x580 && (V & 1))
{
//puts("STOP, HAMMER TIME");
for(int i = 0; i < 6; i++)
IntlControl[i] &= ~0x80;
}
}
else
switch((A >> 2) & 0xF)
{
case 0x0: IntlControl[ch] = V & ~0x40;
if(V & 0x80)
{
EffFreq[ch] = Frequency[ch];
if(ch == 5)
FreqCounter[ch] = 10 * (2048 - EffFreq[ch]);
else
FreqCounter[ch] = 2048 - EffFreq[ch];
IntervalCounter[ch] = (V & 0x1F) + 1;
EnvelopeCounter[ch] = (EnvControl[ch] & 0x7) + 1;
if(ch == 4)
{
SweepModCounter = (SweepControl >> 4) & 7;
SweepModClockDivider = (SweepControl & 0x80) ? 8 : 1;
ModWavePos = 0;
}
WavePos[ch] = 0;
if(ch == 5) // Not sure if this is correct.
lfsr = 1;
//if(!(IntlControl[ch] & 0x80))
// Envelope[ch] = (EnvControl[ch] >> 4) & 0xF;
EffectsClockDivider[ch] = 4800;
IntervalClockDivider[ch] = 4;
EnvelopeClockDivider[ch] = 4;
}
break;
case 0x1: LeftLevel[ch] = (V >> 4) & 0xF;
RightLevel[ch] = (V >> 0) & 0xF;
break;
case 0x2: Frequency[ch] &= 0xFF00;
Frequency[ch] |= V << 0;
EffFreq[ch] &= 0xFF00;
EffFreq[ch] |= V << 0;
break;
case 0x3: Frequency[ch] &= 0x00FF;
Frequency[ch] |= (V & 0x7) << 8;
EffFreq[ch] &= 0x00FF;
EffFreq[ch] |= (V & 0x7) << 8;
break;
case 0x4: EnvControl[ch] &= 0xFF00;
EnvControl[ch] |= V << 0;
Envelope[ch] = (V >> 4) & 0xF;
break;
case 0x5: EnvControl[ch] &= 0x00FF;
if(ch == 4)
EnvControl[ch] |= (V & 0x73) << 8;
else if(ch == 5)
{
EnvControl[ch] |= (V & 0x73) << 8;
lfsr = 1;
}
else
EnvControl[ch] |= (V & 0x03) << 8;
break;
case 0x6: RAMAddress[ch] = V & 0xF;
break;
case 0x7: if(ch == 4)
{
SweepControl = V;
}
break;
}
}
}
inline void VSU::CalcCurrentOutput(int ch, int &left, int &right)
{
if(!(IntlControl[ch] & 0x80))
{
left = right = 0;
return;
}
int WD;
int l_ol, r_ol;
if(ch == 5)
WD = NoiseLatcher; //(NoiseLatcher << 6) - NoiseLatcher;
else
{
if(RAMAddress[ch] > 4)
WD = 0;
else
WD = WaveData[RAMAddress[ch]][WavePos[ch]]; // - 0x20;
}
l_ol = Envelope[ch] * LeftLevel[ch];
if(l_ol)
{
l_ol >>= 3;
l_ol += 1;
}
r_ol = Envelope[ch] * RightLevel[ch];
if(r_ol)
{
r_ol >>= 3;
r_ol += 1;
}
left = WD * l_ol;
right = WD * r_ol;
}
void VSU::Update(int timestamp)
{
//puts("VSU Start");
int left, right;
for(int ch = 0; ch < 6; ch++)
{
int clocks = timestamp - last_ts;
//int running_timestamp = last_ts;
// Output sound here
CalcCurrentOutput(ch, left, right);
/*Synth.offset_inline(running_timestamp, left - last_output[ch][0], &sbuf[0]);
Synth.offset_inline(running_timestamp, right - last_output[ch][1], &sbuf[1]);*/
last_output[ch][0] = left;
last_output[ch][1] = right;
if(!(IntlControl[ch] & 0x80))
continue;
while(clocks > 0)
{
int chunk_clocks = clocks;
if(chunk_clocks > EffectsClockDivider[ch])
chunk_clocks = EffectsClockDivider[ch];
if(ch == 5)
{
if(chunk_clocks > NoiseLatcherClockDivider)
chunk_clocks = NoiseLatcherClockDivider;
}
else
{
if(EffFreq[ch] >= 2040)
{
if(chunk_clocks > LatcherClockDivider[ch])
chunk_clocks = LatcherClockDivider[ch];
}
else
{
if(chunk_clocks > FreqCounter[ch])
chunk_clocks = FreqCounter[ch];
}
}
if(ch == 5 && chunk_clocks > NoiseLatcherClockDivider)
chunk_clocks = NoiseLatcherClockDivider;
FreqCounter[ch] -= chunk_clocks;
while(FreqCounter[ch] <= 0)
{
if(ch == 5)
{
int feedback = ((lfsr >> 7) & 1) ^ ((lfsr >> Tap_LUT[(EnvControl[5] >> 12) & 0x7]) & 1) ^ 1;
lfsr = ((lfsr << 1) & 0x7FFF) | feedback;
FreqCounter[ch] += 10 * (2048 - EffFreq[ch]);
}
else
{
FreqCounter[ch] += 2048 - EffFreq[ch];
WavePos[ch] = (WavePos[ch] + 1) & 0x1F;
}
}
LatcherClockDivider[ch] -= chunk_clocks;
while(LatcherClockDivider[ch] <= 0)
LatcherClockDivider[ch] += 120;
if(ch == 5)
{
NoiseLatcherClockDivider -= chunk_clocks;
if(!NoiseLatcherClockDivider)
{
NoiseLatcherClockDivider = 120;
NoiseLatcher = ((lfsr & 1) << 6) - (lfsr & 1);
}
}
EffectsClockDivider[ch] -= chunk_clocks;
while(EffectsClockDivider[ch] <= 0)
{
EffectsClockDivider[ch] += 4800;
IntervalClockDivider[ch]--;
while(IntervalClockDivider[ch] <= 0)
{
IntervalClockDivider[ch] += 4;
if(IntlControl[ch] & 0x20)
{
IntervalCounter[ch]--;
if(!IntervalCounter[ch])
{
IntlControl[ch] &= ~0x80;
}
}
EnvelopeClockDivider[ch]--;
while(EnvelopeClockDivider[ch] <= 0)
{
EnvelopeClockDivider[ch] += 4;
if(EnvControl[ch] & 0x0100) // Enveloping enabled?
{
EnvelopeCounter[ch]--;
if(!EnvelopeCounter[ch])
{
EnvelopeCounter[ch] = (EnvControl[ch] & 0x7) + 1;
if(EnvControl[ch] & 0x0008) // Grow
{
if(Envelope[ch] < 0xF || (EnvControl[ch] & 0x200))
Envelope[ch] = (Envelope[ch] + 1) & 0xF;
}
else // Decay
{
if(Envelope[ch] > 0 || (EnvControl[ch] & 0x200))
Envelope[ch] = (Envelope[ch] - 1) & 0xF;
}
}
}
} // end while(EnvelopeClockDivider[ch] <= 0)
} // end while(IntervalClockDivider[ch] <= 0)
if(ch == 4)
{
SweepModClockDivider--;
while(SweepModClockDivider <= 0)
{
SweepModClockDivider += (SweepControl & 0x80) ? 8 : 1;
if(((SweepControl >> 4) & 0x7) && (EnvControl[ch] & 0x4000))
{
if(SweepModCounter)
SweepModCounter--;
if(!SweepModCounter)
{
SweepModCounter = (SweepControl >> 4) & 0x7;
if(EnvControl[ch] & 0x1000) // Modulation
{
if(ModWavePos < 32 || (EnvControl[ch] & 0x2000))
{
ModWavePos &= 0x1F;
EffFreq[ch] = (Frequency[ch] + (signed char)ModData[ModWavePos]) & 0x7FF;
ModWavePos++;
}
}
else // Sweep
{
int delta = EffFreq[ch] >> (SweepControl & 0x7);
int NewFreq = EffFreq[ch] + ((SweepControl & 0x8) ? delta : -delta);
//printf("Sweep(%d): Old: %d, New: %d\n", ch, EffFreq[ch], NewFreq);
if(NewFreq < 0)
EffFreq[ch] = 0;
else if(NewFreq > 0x7FF)
{
//EffFreq[ch] = 0x7FF;
IntlControl[ch] &= ~0x80;
}
else
EffFreq[ch] = NewFreq;
}
}
}
} // end while(SweepModClockDivider <= 0)
} // end if(ch == 4)
} // end while(EffectsClockDivider[ch] <= 0)
clocks -= chunk_clocks;
//running_timestamp += chunk_clocks;
// Output sound here too.
CalcCurrentOutput(ch, left, right);
/*
Synth.offset_inline(running_timestamp, left - last_output[ch][0], &sbuf[0]);
Synth.offset_inline(running_timestamp, right - last_output[ch][1], &sbuf[1]);
*/
last_output[ch][0] = left;
last_output[ch][1] = right;
}
}
last_ts = timestamp;
//puts("VSU End");
}
int VSU::EndFrame(int timestamp)
{
int ret = 0;
Update(timestamp);
last_ts = 0;
/*
if(SoundBuf)
{
for(int y = 0; y < 2; y++)
{
sbuf[y].end_frame(timestamp);
ret = sbuf[y].read_samples(SoundBuf + y, SoundBufMaxSize, 1);
}
}
*/
return ret;
}
unsigned char VSU::PeekWave(const unsigned int which, unsigned int Address)
{
assert(which <= 4);
Address &= 0x1F;
return(WaveData[which][Address]);
}
void VSU::PokeWave(const unsigned int which, unsigned int Address, unsigned char value)
{
assert(which <= 4);
Address &= 0x1F;
WaveData[which][Address] = value & 0x3F;
}
unsigned char VSU::PeekModWave(unsigned int Address)
{
Address &= 0x1F;
return(ModData[Address]);
}
void VSU::PokeModWave(unsigned int Address, unsigned char value)
{
Address &= 0x1F;
ModData[Address] = value & 0xFF;
}

97
src/engine/platform/sound/vsu.h Normal file
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@ -0,0 +1,97 @@
/******************************************************************************/
/* Mednafen Virtual Boy Emulation Module */
/******************************************************************************/
/* vsu.h:
** Copyright (C) 2010-2016 Mednafen Team
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License
** as published by the Free Software Foundation; either version 2
** of the License, or (at your option) any later version.
**
** 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 for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software Foundation, Inc.,
** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __VB_VSU_H
#define __VB_VSU_H
class VSU
{
public:
int last_output[6][2];
VSU();
~VSU();
void SetSoundRate(double rate);
void Power(void);
void Write(int timestamp, unsigned int A, unsigned char V);
int EndFrame(int timestamp);
unsigned char PeekWave(const unsigned int which, unsigned int Address);
void PokeWave(const unsigned int which, unsigned int Address, unsigned char value);
unsigned char PeekModWave(unsigned int Address);
void PokeModWave(unsigned int Address, unsigned char value);
private:
void CalcCurrentOutput(int ch, int &left, int &right);
void Update(int timestamp);
unsigned char IntlControl[6];
unsigned char LeftLevel[6];
unsigned char RightLevel[6];
unsigned short Frequency[6];
unsigned short EnvControl[6]; // Channel 5/6 extra functionality tacked on too.
unsigned char RAMAddress[6];
unsigned char SweepControl;
unsigned char WaveData[5][0x20];
unsigned char ModData[0x20];
//
//
//
int EffFreq[6];
int Envelope[6];
int WavePos[6];
int ModWavePos;
int LatcherClockDivider[6];
int FreqCounter[6];
int IntervalCounter[6];
int EnvelopeCounter[6];
int SweepModCounter;
int EffectsClockDivider[6];
int IntervalClockDivider[6];
int EnvelopeClockDivider[6];
int SweepModClockDivider;
int NoiseLatcherClockDivider;
unsigned int NoiseLatcher;
unsigned int lfsr;
int last_ts;
};
#endif

2
src/engine/platform/su.cpp
View file

@ -518,7 +518,7 @@ void DivPlatformSoundUnit::setFlags(const DivConfig& flags) {
bool echoOn=flags.getBool("echo",false);
initIlCtrl=3|(echoOn?4:0);
initIlSize=((flags.getInt("echoDelay",0))&63)|(echoOn?0x40:0)|(flags.getBool("swapEcho",false)?0x80:0);
initFil1=flags.getInt("echoFeedback",0);
initFil1=flags.getInt("echoFeedback",0)|(flags.getInt("echoResolution",0)<<4);
initEchoVol=flags.getInt("echoVol",0);
sampleMemSize=flags.getInt("sampleMemSize",0);

647
src/engine/platform/vb.cpp Normal file
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@ -0,0 +1,647 @@
/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "vb.h"
#include "../engine.h"
#include <math.h>
//#define rWrite(a,v) pendingWrites[a]=v;
#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define chWrite(c,a,v) rWrite(0x400+((c)<<6)+((a)<<2),v);
#define CHIP_DIVIDER 16
const char* regCheatSheetVB[]={
"Wave0", "000",
"Wave1", "080",
"Wave2", "100",
"Wave3", "180",
"Wave4", "200",
"ModTable", "280",
"S0INT", "400",
"S0LRV", "404",
"S0FQL", "408",
"S0FQH", "40C",
"S0EV0", "410",
"S0EV1", "414",
"S0RAM", "418",
"S1INT", "440",
"S1LRV", "444",
"S1FQL", "448",
"S1FQH", "44C",
"S1EV0", "450",
"S1EV1", "454",
"S1RAM", "458",
"S2INT", "480",
"S2LRV", "484",
"S2FQL", "488",
"S2FQH", "48C",
"S2EV0", "480",
"S2EV1", "484",
"S2RAM", "488",
"S3INT", "4C0",
"S3LRV", "4C4",
"S3FQL", "4C8",
"S3FQH", "4CC",
"S3EV0", "4C0",
"S3EV1", "4C4",
"S3RAM", "4C8",
"S4INT", "500",
"S4LRV", "504",
"S4FQL", "508",
"S4FQH", "50C",
"S4EV0", "510",
"S4EV1", "514",
"S4RAM", "518",
"S4SWP", "51C",
"S5INT", "540",
"S5LRV", "544",
"S5FQL", "548",
"S5FQH", "54C",
"S5EV0", "550",
"S5EV1", "554",
"S5RAM", "558",
NULL
};
const char** DivPlatformVB::getRegisterSheet() {
return regCheatSheetVB;
}
void DivPlatformVB::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
// PCM part
/*
for (int i=0; i<6; i++) {
if (chan[i].pcm && chan[i].dacSample!=-1) {
chan[i].dacPeriod+=chan[i].dacRate;
if (chan[i].dacPeriod>rate) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->samples<=0) {
chan[i].dacSample=-1;
continue;
}
chWrite(i,0x07,0);
signed char dacData=((signed char)((unsigned char)s->data8[chan[i].dacPos]^0x80))>>3;
chan[i].dacOut=CLAMP(dacData,-16,15);
if (!isMuted[i]) {
chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].outVol));
chWrite(i,0x06,chan[i].dacOut&0x1f);
} else {
chWrite(i,0x04,0xc0);
chWrite(i,0x06,0x10);
}
chan[i].dacPos++;
if (s->isLoopable() && chan[i].dacPos>=(unsigned int)s->loopEnd) {
chan[i].dacPos=s->loopStart;
} else if (chan[i].dacPos>=s->samples) {
chan[i].dacSample=-1;
}
chan[i].dacPeriod-=rate;
}
}
}
*/
// VB part
cycles=0;
while (!writes.empty()) {
QueuedWrite w=writes.front();
vb->Write(cycles,w.addr,w.val);
regPool[w.addr]=w.val;
//cycles+=2;
writes.pop();
}
vb->EndFrame(16);
tempL=0;
tempR=0;
for (int i=0; i<6; i++) {
oscBuf[i]->data[oscBuf[i]->needle++]=(vb->last_output[i][0]+vb->last_output[i][1])*8;
tempL+=vb->last_output[i][0];
tempR+=vb->last_output[i][1];
}
if (tempL<-32768) tempL=-32768;
if (tempL>32767) tempL=32767;
if (tempR<-32768) tempR=-32768;
if (tempR>32767) tempR=32767;
bufL[h]=tempL;
bufR[h]=tempR;
}
}
void DivPlatformVB::updateWave(int ch) {
if (ch>=5) return;
if (chan[ch].pcm) {
chan[ch].deferredWaveUpdate=true;
return;
}
for (int i=0; i<32; i++) {
rWrite((ch<<7)+(i<<2),chan[ch].ws.output[i]);
//chWrite(ch,0x06,chan[ch].ws.output[(i+chan[ch].antiClickWavePos)&31]);
}
chan[ch].antiClickWavePos&=31;
if (chan[ch].active) {
//chWrite(ch,0x04,0x80|chan[ch].outVol);
}
if (chan[ch].deferredWaveUpdate) {
chan[ch].deferredWaveUpdate=false;
}
}
// TODO: in octave 6 the noise table changes to a tonal one
static unsigned char noiseFreq[12]={
4,13,15,18,21,23,25,27,29,31,0,2
};
void DivPlatformVB::tick(bool sysTick) {
for (int i=0; i<6; i++) {
// anti-click
if (antiClickEnabled && sysTick && chan[i].freq>0) {
chan[i].antiClickPeriodCount+=(chipClock/MAX(parent->getCurHz(),1.0f));
chan[i].antiClickWavePos+=chan[i].antiClickPeriodCount/chan[i].freq;
chan[i].antiClickPeriodCount%=chan[i].freq;
}
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LINEAR(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
if (chan[i].furnaceDac && chan[i].pcm) {
// ignore for now
} else {
chWrite(i,0x04,chan[i].outVol<<4);
}
}
if (chan[i].std.duty.had && i>=4) {
chan[i].noise=chan[i].std.duty.val;
chan[i].freqChanged=true;
int noiseSeek=chan[i].note;
if (noiseSeek<0) noiseSeek=0;
chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
}
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
int noiseSeek=parent->calcArp(chan[i].note,chan[i].std.arp.val);
chan[i].baseFreq=NOTE_PERIODIC(noiseSeek);
if (noiseSeek<0) noiseSeek=0;
chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
}
chan[i].freqChanged=true;
}
if (chan[i].std.wave.had && !chan[i].pcm) {
if (chan[i].wave!=chan[i].std.wave.val || chan[i].ws.activeChanged()) {
chan[i].wave=chan[i].std.wave.val;
chan[i].ws.changeWave1(chan[i].wave);
if (!chan[i].keyOff) chan[i].keyOn=true;
}
}
if (chan[i].std.panL.had) {
chan[i].pan&=0x0f;
chan[i].pan|=(chan[i].std.panL.val&15)<<4;
}
if (chan[i].std.panR.had) {
chan[i].pan&=0xf0;
chan[i].pan|=chan[i].std.panR.val&15;
}
if (chan[i].std.panL.had || chan[i].std.panR.had) {
chWrite(i,0x01,isMuted[i]?0:chan[i].pan);
}
if (chan[i].std.pitch.had) {
if (chan[i].std.pitch.mode) {
chan[i].pitch2+=chan[i].std.pitch.val;
CLAMP_VAR(chan[i].pitch2,-32768,32767);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
if (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1) {
if (chan[i].furnaceDac && chan[i].pcm) {
if (chan[i].active && chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
chan[i].dacPos=0;
chan[i].dacPeriod=0;
//chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].vol));
addWrite(0xffff0000+(i<<8),chan[i].dacSample);
chan[i].keyOn=true;
}
}
chan[i].antiClickWavePos=0;
chan[i].antiClickPeriodCount=0;
}
if (chan[i].active) {
if (chan[i].ws.tick() || (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1) || chan[i].deferredWaveUpdate) {
updateWave(i);
}
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
if (chan[i].furnaceDac && chan[i].pcm) {
double off=1.0;
if (chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->centerRate<1) {
off=1.0;
} else {
off=8363.0/(double)s->centerRate;
}
}
chan[i].dacRate=((double)chipClock/2)/MAX(1,off*chan[i].freq);
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
}
if (chan[i].freq<1) chan[i].freq=1;
if (chan[i].freq>2047) chan[i].freq=2047;
chan[i].freq=2048-chan[i].freq;
chWrite(i,0x02,chan[i].freq&0xff);
chWrite(i,0x03,chan[i].freq>>8);
if (chan[i].keyOn) {
}
if (chan[i].keyOff) {
chWrite(i,0x04,0);
}
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
chan[i].freqChanged=false;
}
}
}
int DivPlatformVB::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_PCE);
chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:31;
if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
chan[c.chan].pcm=true;
} else if (chan[c.chan].furnaceDac) {
chan[c.chan].pcm=false;
}
if (chan[c.chan].pcm) {
if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
chan[c.chan].furnaceDac=true;
if (skipRegisterWrites) break;
chan[c.chan].dacSample=ins->amiga.getSample(c.value);
if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
break;
} else {
if (dumpWrites) {
//chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
}
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
//chan[c.chan].keyOn=true;
} else {
chan[c.chan].furnaceDac=false;
if (skipRegisterWrites) break;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
}
chan[c.chan].dacSample=12*sampleBank+chan[c.chan].note%12;
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
break;
} else {
if (dumpWrites) addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=parent->getSample(chan[c.chan].dacSample)->rate;
if (dumpWrites) {
//chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dacRate);
}
}
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
if (chan[c.chan].wave<0) {
chan[c.chan].wave=0;
chan[c.chan].ws.changeWave1(chan[c.chan].wave);
}
chan[c.chan].ws.init(ins,32,63,chan[c.chan].insChanged);
chan[c.chan].insChanged=false;
break;
}
case DIV_CMD_NOTE_OFF:
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
chan[c.chan].pcm=false;
chan[c.chan].active=false;
chan[c.chan].keyOff=true;
chan[c.chan].macroInit(NULL);
break;
case DIV_CMD_NOTE_OFF_ENV:
case DIV_CMD_ENV_RELEASE:
chan[c.chan].std.release();
break;
case DIV_CMD_INSTRUMENT:
if (chan[c.chan].ins!=c.value || c.value2==1) {
chan[c.chan].ins=c.value;
chan[c.chan].insChanged=true;
}
break;
case DIV_CMD_VOLUME:
if (chan[c.chan].vol!=c.value) {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
if (chan[c.chan].active && !chan[c.chan].pcm) {
chWrite(c.chan,0x04,chan[c.chan].outVol<<4);
}
}
}
break;
case DIV_CMD_GET_VOLUME:
if (chan[c.chan].std.vol.has) {
return chan[c.chan].vol;
}
return chan[c.chan].outVol;
break;
case DIV_CMD_PITCH:
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_WAVE:
chan[c.chan].wave=c.value;
chan[c.chan].ws.changeWave1(chan[c.chan].wave);
chan[c.chan].keyOn=true;
break;
case DIV_CMD_PCE_LFO_MODE:
if (c.value==0) {
lfoMode=0;
} else {
lfoMode=c.value;
}
rWrite(0x08,lfoSpeed);
rWrite(0x09,lfoMode);
break;
case DIV_CMD_PCE_LFO_SPEED:
lfoSpeed=255-c.value;
rWrite(0x08,lfoSpeed);
rWrite(0x09,lfoMode);
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value;
if (chan[c.chan].baseFreq<=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
}
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
case DIV_CMD_STD_NOISE_MODE:
chan[c.chan].noise=c.value;
chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|chan[c.chan].note):0);
break;
case DIV_CMD_SAMPLE_MODE:
chan[c.chan].pcm=c.value;
break;
case DIV_CMD_SAMPLE_BANK:
sampleBank=c.value;
if (sampleBank>(parent->song.sample.size()/12)) {
sampleBank=parent->song.sample.size()/12;
}
break;
case DIV_CMD_PANNING: {
chan[c.chan].pan=(c.value&0xf0)|(c.value2>>4);
chWrite(c.chan,0x01,isMuted[c.chan]?0:chan[c.chan].pan);
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
case DIV_CMD_PRE_PORTA:
if (chan[c.chan].active && c.value2) {
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
}
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_GET_VOLMAX:
return 15;
break;
case DIV_ALWAYS_SET_VOLUME:
return 1;
break;
default:
break;
}
return 1;
}
void DivPlatformVB::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
chWrite(ch,0x01,isMuted[ch]?0:chan[ch].pan);
if (!isMuted[ch] && (chan[ch].pcm && chan[ch].dacSample!=-1)) {
//chWrite(ch,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[ch].outVol));
//chWrite(ch,0x06,chan[ch].dacOut&0x1f);
}
}
void DivPlatformVB::forceIns() {
for (int i=0; i<6; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
updateWave(i);
chWrite(i,0x01,isMuted[i]?0:chan[i].pan);
}
}
void* DivPlatformVB::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformVB::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformVB::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformVB::getRegisterPool() {
return regPool;
}
int DivPlatformVB::getRegisterPoolSize() {
return 0x600;
}
int DivPlatformVB::getRegisterPoolDepth() {
return 8;
}
void DivPlatformVB::reset() {
while (!writes.empty()) writes.pop();
memset(regPool,0,0x600);
for (int i=0; i<6; i++) {
chan[i]=DivPlatformVB::Channel();
chan[i].std.setEngine(parent);
chan[i].ws.setEngine(parent);
chan[i].ws.init(NULL,32,63,false);
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
vb->Power();
lastPan=0xff;
tempL=0;
tempR=0;
cycles=0;
curChan=-1;
sampleBank=0;
lfoMode=0;
lfoSpeed=255;
// set per-channel initial values
for (int i=0; i<6; i++) {
chWrite(i,0x01,isMuted[i]?0:chan[i].pan);
chWrite(i,0x05,0x00);
chWrite(i,0x00,0x80);
chWrite(i,0x06,i);
}
delay=500;
}
bool DivPlatformVB::isStereo() {
return true;
}
bool DivPlatformVB::keyOffAffectsArp(int ch) {
return true;
}
float DivPlatformVB::getPostAmp() {
return 6.0f;
}
void DivPlatformVB::notifyWaveChange(int wave) {
for (int i=0; i<6; i++) {
if (chan[i].wave==wave) {
chan[i].ws.changeWave1(wave);
updateWave(i);
}
}
}
void DivPlatformVB::notifyInsDeletion(void* ins) {
for (int i=0; i<6; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformVB::setFlags(const DivConfig& flags) {
chipClock=5000000.0;
antiClickEnabled=!flags.getBool("noAntiClick",false);
rate=chipClock/16;
for (int i=0; i<6; i++) {
oscBuf[i]->rate=rate;
}
if (vb!=NULL) {
delete vb;
vb=NULL;
}
vb=new VSU;
}
void DivPlatformVB::poke(unsigned int addr, unsigned short val) {
rWrite(addr,val);
}
void DivPlatformVB::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
}
int DivPlatformVB::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<6; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
vb=NULL;
setFlags(flags);
reset();
return 6;
}
void DivPlatformVB::quit() {
for (int i=0; i<6; i++) {
delete oscBuf[i];
}
if (vb!=NULL) {
delete vb;
vb=NULL;
}
}
DivPlatformVB::~DivPlatformVB() {
}

123
src/engine/platform/vb.h Normal file
View file

@ -0,0 +1,123 @@
/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _PLATFORM_VB_H
#define _PLATFORM_VB_H
#include "../dispatch.h"
#include <queue>
#include "../macroInt.h"
#include "../waveSynth.h"
#include "sound/vsu.h"
class DivPlatformVB: public DivDispatch {
struct Channel {
int freq, baseFreq, pitch, pitch2, note, antiClickPeriodCount, antiClickWavePos;
int dacPeriod, dacRate, dacOut;
unsigned int dacPos;
int dacSample, ins;
unsigned char pan;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, noise, pcm, furnaceDac, deferredWaveUpdate;
signed char vol, outVol, wave;
int macroVolMul;
DivMacroInt std;
DivWaveSynth ws;
void macroInit(DivInstrument* which) {
std.init(which);
pitch2=0;
}
Channel():
freq(0),
baseFreq(0),
pitch(0),
pitch2(0),
note(0),
antiClickPeriodCount(0),
antiClickWavePos(0),
dacPeriod(0),
dacRate(0),
dacOut(0),
dacPos(0),
dacSample(-1),
ins(-1),
pan(255),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
noise(false),
pcm(false),
furnaceDac(false),
deferredWaveUpdate(false),
vol(31),
outVol(31),
wave(-1),
macroVolMul(31) {}
};
Channel chan[6];
DivDispatchOscBuffer* oscBuf[6];
bool isMuted[6];
bool antiClickEnabled;
struct QueuedWrite {
unsigned short addr;
unsigned char val;
QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v) {}
};
std::queue<QueuedWrite> writes;
unsigned char lastPan;
int cycles, curChan, delay;
int tempL;
int tempR;
unsigned char sampleBank, lfoMode, lfoSpeed;
VSU* vb;
unsigned char regPool[0x600];
void updateWave(int ch);
friend void putDispatchChip(void*,int);
friend void putDispatchChan(void*,int,int);
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);
int dispatch(DivCommand c);
void* getChanState(int chan);
DivMacroInt* getChanMacroInt(int ch);
DivDispatchOscBuffer* getOscBuffer(int chan);
unsigned char* getRegisterPool();
int getRegisterPoolSize();
int getRegisterPoolDepth();
void reset();
void forceIns();
void tick(bool sysTick=true);
void muteChannel(int ch, bool mute);
bool isStereo();
bool keyOffAffectsArp(int ch);
float getPostAmp();
void setFlags(const DivConfig& flags);
void notifyWaveChange(int wave);
void notifyInsDeletion(void* ins);
void poke(unsigned int addr, unsigned short val);
void poke(std::vector<DivRegWrite>& wlist);
const char** getRegisterSheet();
int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags);
void quit();
~DivPlatformVB();
};
#endif

12
src/engine/platform/x1_010.cpp
View file

@ -476,6 +476,7 @@ void DivPlatformX1_010::tick(bool sysTick) {
}
}
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,chan[i].pcm?off:CHIP_FREQBASE);
if (chan[i].fixedFreq) chan[i].freq=chan[i].fixedFreq;
if (chan[i].pcm) {
if (chan[i].freq<1) chan[i].freq=1;
if (chan[i].freq>255) chan[i].freq=255;
@ -554,11 +555,13 @@ int DivPlatformX1_010::dispatch(DivCommand c) {
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].baseFreq=NoteX1_010(c.chan,chan[c.chan].note);
chan[c.chan].fixedFreq=0;
chan[c.chan].freqChanged=true;
}
} else {
chan[c.chan].macroInit(NULL);
chan[c.chan].outVol=chan[c.chan].vol;
// huh?
if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
chWrite(c.chan,0,0); // reset
chWrite(c.chan,1,0);
@ -571,7 +574,8 @@ int DivPlatformX1_010::dispatch(DivCommand c) {
} else {
chan[c.chan].macroInit(NULL);
chan[c.chan].outVol=chan[c.chan].vol;
if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
chan[c.chan].sample=12*sampleBank+c.value%12;
if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
chWrite(c.chan,0,0); // reset
chWrite(c.chan,1,0);
chWrite(c.chan,2,0);
@ -579,7 +583,7 @@ int DivPlatformX1_010::dispatch(DivCommand c) {
chWrite(c.chan,5,0);
break;
}
DivSample* s=parent->getSample(12*sampleBank+c.value%12);
DivSample* s=parent->getSample(chan[c.chan].sample);
if (isBanked) {
bankSlot[chan[c.chan].bankSlot]=sampleOffX1[chan[c.chan].sample]>>17;
unsigned int bankedOffs=(chan[c.chan].bankSlot<<17)|(sampleOffX1[chan[c.chan].sample]&0x1ffff);
@ -591,12 +595,14 @@ int DivPlatformX1_010::dispatch(DivCommand c) {
int end=(sampleOffX1[chan[c.chan].sample]+s->length8+0xfff)&~0xfff; // padded
chWrite(c.chan,5,(0x100-(end>>12))&0xff);
}
chan[c.chan].baseFreq=(((unsigned int)s->rate)<<4)/(chipClock/512);
// ????
chan[c.chan].fixedFreq=(((unsigned int)s->rate)<<4)/(chipClock/512);
chan[c.chan].freqChanged=true;
}
} else if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].baseFreq=NoteX1_010(c.chan,chan[c.chan].note);
chan[c.chan].fixedFreq=0;
chan[c.chan].freqChanged=true;
}
chan[c.chan].active=true;

4
src/engine/platform/x1_010.h
View file

@ -68,7 +68,7 @@ class DivPlatformX1_010: public DivDispatch, public vgsound_emu_mem_intf {
slide(0),
slidefrac(0) {}
};
int freq, baseFreq, pitch, pitch2, note;
int freq, baseFreq, fixedFreq, pitch, pitch2, note;
int wave, sample, ins;
unsigned char pan, autoEnvNum, autoEnvDen;
bool active, insChanged, envChanged, freqChanged, keyOn, keyOff, inPorta, furnacePCM, pcm;
@ -95,7 +95,7 @@ class DivPlatformX1_010: public DivDispatch, public vgsound_emu_mem_intf {
pitch2=0;
}
Channel():
freq(0), baseFreq(0), pitch(0), pitch2(0), note(0),
freq(0), baseFreq(0), fixedFreq(0), pitch(0), pitch2(0), note(0),
wave(-1), sample(-1), ins(-1),
pan(255), autoEnvNum(0), autoEnvDen(0),
active(false), insChanged(true), envChanged(true), freqChanged(false), keyOn(false), keyOff(false), inPorta(false), furnacePCM(false), pcm(false),