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https://github.com/tildearrow/furnace.git
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438 lines
11 KiB
C++
438 lines
11 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "msm6258.h"
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#include "../engine.h"
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#include "../../ta-log.h"
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#include "sound/oki/okim6258.h"
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#include <string.h>
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#include <math.h>
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#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
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const char** DivPlatformMSM6258::getRegisterSheet() {
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return NULL;
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}
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void DivPlatformMSM6258::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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short* outs[2]={
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&msmOut,
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NULL
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};
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for (size_t h=start; h<start+len; h++) {
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if (--msmClockCount<0) {
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if (--msmDividerCount<=0) {
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if (!writes.empty()) {
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QueuedWrite& w=writes.front();
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switch (w.addr) {
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case 0:
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msm->ctrl_w(w.val);
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break;
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case 2:
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msmPan=w.val;
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break;
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case 8:
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msmClock=w.val;
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break;
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case 12:
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msmDivider=4-(w.val&3);
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if (msmDivider<2) msmDivider=2;
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break;
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}
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writes.pop();
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}
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if (sample>=0 && sample<parent->song.sampleLen) {
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DivSample* s=parent->getSample(sample);
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unsigned char nextData=(s->dataVOX[samplePos]>>4)|(s->dataVOX[samplePos]<<4);
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if (msm->data_w(nextData)) {
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samplePos++;
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if (samplePos>=(int)s->lengthVOX) {
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sample=-1;
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samplePos=0;
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msm->ctrl_w(1);
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}
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}
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}
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msm->sound_stream_update(outs,1);
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msmDividerCount=msmDivider;
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}
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msmClockCount=msmClock;
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}
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if (isMuted[0]) {
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bufL[h]=0;
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bufR[h]=0;
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oscBuf[0]->data[oscBuf[0]->needle++]=0;
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} else {
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bufL[h]=(msmPan&2)?msmOut:0;
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bufR[h]=(msmPan&1)?msmOut:0;
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oscBuf[0]->data[oscBuf[0]->needle++]=msmPan?msmOut:0;
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}
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}
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}
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void DivPlatformMSM6258::tick(bool sysTick) {
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for (int i=0; i<1; i++) {
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if (!parent->song.disableSampleMacro) {
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chan[i].std.next();
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if (chan[i].std.duty.had) {
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if (rateSel!=(chan[i].std.duty.val&3)) {
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rateSel=chan[i].std.duty.val&3;
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rWrite(12,rateSel);
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}
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}
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if (chan[i].std.panL.had) {
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if (chan[i].pan!=(chan[i].std.panL.val&3)) {
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chan[i].pan=chan[i].std.panL.val&3;
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rWrite(2,chan[i].pan);
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}
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}
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if (chan[i].std.ex1.had) {
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if (clockSel!=(chan[i].std.ex1.val&1)) {
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clockSel=chan[i].std.ex1.val&1;
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rWrite(8,clockSel);
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}
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}
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if (chan[i].std.phaseReset.had) {
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if (chan[i].std.phaseReset.val && chan[i].active) {
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chan[i].keyOn=true;
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}
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}
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}
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if (chan[i].keyOn || chan[i].keyOff) {
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samplePos=0;
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rWrite(0,1); // turn off
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if (chan[i].active && !chan[i].keyOff) {
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if (sample>=0 && sample<parent->song.sampleLen) {
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rWrite(0,2);
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} else {
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sample=-1;
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}
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} else {
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sample=-1;
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}
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chan[i].keyOn=false;
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chan[i].keyOff=false;
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}
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}
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}
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int DivPlatformMSM6258::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON: {
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DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_FM);
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if (ins->type==DIV_INS_MSM6258 || ins->type==DIV_INS_AMIGA) {
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chan[c.chan].furnacePCM=true;
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} else {
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chan[c.chan].furnacePCM=false;
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}
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if (skipRegisterWrites) break;
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if (chan[c.chan].furnacePCM) {
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chan[c.chan].macroInit(ins);
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if (!chan[c.chan].std.vol.will) {
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chan[c.chan].outVol=chan[c.chan].vol;
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}
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sample=ins->amiga.getSample(c.value);
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samplePos=0;
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if (sample>=0 && sample<parent->song.sampleLen) {
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//DivSample* s=parent->getSample(chan[c.chan].sample);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].note=c.value;
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chan[c.chan].freqChanged=true;
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}
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chan[c.chan].active=true;
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chan[c.chan].keyOn=true;
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} else {
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break;
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}
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} else {
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chan[c.chan].sample=-1;
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chan[c.chan].macroInit(NULL);
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chan[c.chan].outVol=chan[c.chan].vol;
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if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
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break;
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}
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//DivSample* s=parent->getSample(12*sampleBank+c.value%12);
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sample=12*sampleBank+c.value%12;
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samplePos=0;
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chan[c.chan].active=true;
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chan[c.chan].keyOn=true;
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}
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break;
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}
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].keyOff=true;
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chan[c.chan].keyOn=false;
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chan[c.chan].active=false;
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chan[c.chan].macroInit(NULL);
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break;
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case DIV_CMD_NOTE_OFF_ENV:
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chan[c.chan].keyOff=true;
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chan[c.chan].keyOn=false;
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chan[c.chan].active=false;
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chan[c.chan].std.release();
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break;
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case DIV_CMD_ENV_RELEASE:
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chan[c.chan].std.release();
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break;
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case DIV_CMD_VOLUME: {
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chan[c.chan].vol=c.value;
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if (!chan[c.chan].std.vol.has) {
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chan[c.chan].outVol=c.value;
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}
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break;
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}
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case DIV_CMD_GET_VOLUME: {
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return chan[c.chan].vol;
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break;
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}
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case DIV_CMD_INSTRUMENT:
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if (chan[c.chan].ins!=c.value || c.value2==1) {
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chan[c.chan].insChanged=true;
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}
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chan[c.chan].ins=c.value;
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break;
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case DIV_CMD_PITCH: {
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break;
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}
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case DIV_CMD_NOTE_PORTA: {
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return 2;
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}
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case DIV_CMD_SAMPLE_BANK:
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sampleBank=c.value;
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if (sampleBank>(parent->song.sample.size()/12)) {
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sampleBank=parent->song.sample.size()/12;
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}
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break;
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case DIV_CMD_SAMPLE_FREQ:
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rateSel=c.value&3;
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rWrite(12,rateSel);
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break;
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case DIV_CMD_SAMPLE_MODE:
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clockSel=c.value&1;
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rWrite(8,clockSel);
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break;
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case DIV_CMD_PANNING: {
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if (c.value==0 && c.value2==0) {
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chan[c.chan].pan=3;
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} else {
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chan[c.chan].pan=(c.value2>0)|((c.value>0)<<1);
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}
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rWrite(2,chan[c.chan].pan);
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break;
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}
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case DIV_CMD_LEGATO: {
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break;
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}
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case DIV_ALWAYS_SET_VOLUME:
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return 0;
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break;
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case DIV_CMD_GET_VOLMAX:
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return 8;
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break;
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case DIV_CMD_PRE_PORTA:
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break;
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case DIV_CMD_PRE_NOTE:
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break;
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default:
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//printf("WARNING: unimplemented command %d\n",c.cmd);
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break;
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}
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return 1;
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}
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void DivPlatformMSM6258::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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}
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void DivPlatformMSM6258::forceIns() {
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while (!writes.empty()) writes.pop();
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for (int i=0; i<1; i++) {
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chan[i].insChanged=true;
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}
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rWrite(12,rateSel);
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rWrite(8,clockSel);
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rWrite(2,chan[0].pan);
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}
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void* DivPlatformMSM6258::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformMSM6258::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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DivDispatchOscBuffer* DivPlatformMSM6258::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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unsigned char* DivPlatformMSM6258::getRegisterPool() {
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return NULL;
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}
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int DivPlatformMSM6258::getRegisterPoolSize() {
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return 0;
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}
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void DivPlatformMSM6258::poke(unsigned int addr, unsigned short val) {
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//immWrite(addr,val);
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}
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void DivPlatformMSM6258::poke(std::vector<DivRegWrite>& wlist) {
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//for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
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}
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void DivPlatformMSM6258::reset() {
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while (!writes.empty()) writes.pop();
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msm->device_reset();
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msmClock=chipClock;
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msmDivider=2;
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msmDividerCount=0;
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msmClock=0;
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msmClockCount=0;
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msmPan=3;
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rateSel=2;
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clockSel=0;
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if (dumpWrites) {
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addWrite(0xffffffff,0);
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}
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for (int i=0; i<1; i++) {
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chan[i]=DivPlatformMSM6258::Channel();
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chan[i].std.setEngine(parent);
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}
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for (int i=0; i<1; i++) {
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chan[i].vol=8;
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chan[i].outVol=8;
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}
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sampleBank=0;
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sample=-1;
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samplePos=0;
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delay=0;
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}
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bool DivPlatformMSM6258::isStereo() {
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return true;
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}
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bool DivPlatformMSM6258::keyOffAffectsArp(int ch) {
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return false;
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}
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void DivPlatformMSM6258::notifyInsChange(int ins) {
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for (int i=0; i<1; i++) {
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if (chan[i].ins==ins) {
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chan[i].insChanged=true;
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}
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}
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}
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void DivPlatformMSM6258::notifyInsDeletion(void* ins) {
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}
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const void* DivPlatformMSM6258::getSampleMem(int index) {
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return index == 0 ? adpcmMem : NULL;
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}
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size_t DivPlatformMSM6258::getSampleMemCapacity(int index) {
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return index == 0 ? 262144 : 0;
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}
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size_t DivPlatformMSM6258::getSampleMemUsage(int index) {
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return index == 0 ? adpcmMemLen : 0;
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}
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void DivPlatformMSM6258::renderSamples() {
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memset(adpcmMem,0,getSampleMemCapacity(0));
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// sample data
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size_t memPos=0;
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int sampleCount=parent->song.sampleLen;
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if (sampleCount>128) sampleCount=128;
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for (int i=0; i<sampleCount; i++) {
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DivSample* s=parent->song.sample[i];
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int paddedLen=s->lengthVOX;
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if (memPos>=getSampleMemCapacity(0)) {
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logW("out of ADPCM memory for sample %d!",i);
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break;
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}
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if (memPos+paddedLen>=getSampleMemCapacity(0)) {
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memcpy(adpcmMem+memPos,s->dataVOX,getSampleMemCapacity(0)-memPos);
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logW("out of ADPCM memory for sample %d!",i);
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} else {
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memcpy(adpcmMem+memPos,s->dataVOX,paddedLen);
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}
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memPos+=paddedLen;
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}
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adpcmMemLen=memPos+256;
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}
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void DivPlatformMSM6258::setFlags(unsigned int flags) {
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switch (flags) {
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case 3:
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chipClock=8192000;
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break;
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case 2:
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chipClock=8000000;
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break;
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case 1:
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chipClock=4096000;
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break;
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default:
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chipClock=4000000;
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break;
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}
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rate=chipClock/256;
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for (int i=0; i<1; i++) {
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oscBuf[i]->rate=rate;
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}
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}
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int DivPlatformMSM6258::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
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parent=p;
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adpcmMem=new unsigned char[getSampleMemCapacity(0)];
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adpcmMemLen=0;
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dumpWrites=false;
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skipRegisterWrites=false;
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updateOsc=0;
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for (int i=0; i<1; i++) {
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isMuted[i]=false;
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oscBuf[i]=new DivDispatchOscBuffer;
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}
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msm=new okim6258_device(4000000);
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msm->device_start();
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setFlags(flags);
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reset();
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return 4;
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}
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void DivPlatformMSM6258::quit() {
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for (int i=0; i<1; i++) {
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delete oscBuf[i];
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}
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delete msm;
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delete[] adpcmMem;
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}
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DivPlatformMSM6258::~DivPlatformMSM6258() {
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}
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