534 lines
15 KiB
C++
534 lines
15 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 "ymz280b.h"
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#include "../engine.h"
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#include "../../ta-log.h"
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#include <math.h>
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#include <map>
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#define CHIP_FREQBASE 25165824
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#define rWrite(a,v) {if(!skipRegisterWrites) {ymz280b.write(0,a); ymz280b.write(1,v); regPool[a]=v; if(dumpWrites) addWrite(a,v); }}
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const char* regCheatSheetYMZ280B[]={
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"CHx_Freq", "00+x*4",
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"CHx_Control", "01+x*4",
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"CHx_Volume", "02+x*4",
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"CHx_Panning", "03+x*4",
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"CHx_StartH", "20+x*4",
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"CHx_LoopStartH", "21+x*4",
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"CHx_LoopEndH", "22+x*4",
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"CHx_EndH", "23+x*4",
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"CHx_StartM", "40+x*4",
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"CHx_LoopStartM", "41+x*4",
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"CHx_LoopEndM", "42+x*4",
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"CHx_EndM", "43+x*4",
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"CHx_StartL", "60+x*4",
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"CHx_LoopStartL", "61+x*4",
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"CHx_LoopEndL", "62+x*4",
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"CHx_EndL", "63+x*4",
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"DSP_Channel", "80",
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"DSP_Enable", "81",
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"DSP_Data", "82",
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"RAM_AddrH", "84",
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"RAM_AddrM", "85",
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"RAM_AddrL", "86",
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"RAM_Data", "87",
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"IRQ_Enable", "E0",
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"Enable", "FF",
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NULL
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};
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const char** DivPlatformYMZ280B::getRegisterSheet() {
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return regCheatSheetYMZ280B;
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}
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void DivPlatformYMZ280B::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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short buf[16][256];
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short *bufPtrs[16]={
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buf[0],buf[1],buf[2],buf[3],buf[4],buf[5],buf[6],buf[7],
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buf[8],buf[9],buf[10],buf[11],buf[12],buf[13],buf[14],buf[15]
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};
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size_t pos=start;
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while (len > 0) {
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size_t blockLen = MIN(len, 256);
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ymz280b.sound_stream_update(bufPtrs, blockLen);
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for (size_t i=0; i<blockLen; i++) {
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int dataL=0;
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int dataR=0;
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for (int j=0; j<8; j++) {
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dataL+=buf[j*2][i];
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dataR+=buf[j*2+1][i];
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oscBuf[j]->data[oscBuf[j]->needle++]=(short)(((int)buf[j*2][i]+buf[j*2+1][i])/2);
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}
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bufL[pos]=(short)(dataL/8);
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bufR[pos]=(short)(dataR/8);
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pos++;
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}
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len-=blockLen;
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}
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}
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void DivPlatformYMZ280B::tick(bool sysTick) {
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for (int i=0; i<8; i++) {
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chan[i].std.next();
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if (chan[i].std.vol.had) {
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chan[i].outVol=((chan[i].vol&0xff)*MIN(chan[i].macroVolMul,chan[i].std.vol.val))/chan[i].macroVolMul;
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writeOutVol(i);
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}
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if (chan[i].std.arp.had) {
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if (!chan[i].inPorta) {
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chan[i].baseFreq=NOTE_FREQUENCY(parent->calcArp(chan[i].note,chan[i].std.arp.val));
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.pitch.had) {
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if (chan[i].std.pitch.mode) {
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chan[i].pitch2+=chan[i].std.pitch.val;
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CLAMP_VAR(chan[i].pitch2,-32768,32767);
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} else {
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chan[i].pitch2=chan[i].std.pitch.val;
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.panL.had) { // panning
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if (chan[i].isNewYMZ) {
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chan[i].panning=8+chan[i].std.panL.val;
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} else {
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chan[i].panning=MIN((chan[i].std.panL.val*15/16+15)/2+1,15);
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}
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rWrite(0x03+i*4,chan[i].panning);
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}
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if (chan[i].std.phaseReset.had) {
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if ((chan[i].std.phaseReset.val==1) && chan[i].active) {
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chan[i].audPos=0;
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chan[i].setPos=true;
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}
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}
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if (chan[i].setPos) {
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// force keyon
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chan[i].keyOn=true;
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chan[i].setPos=false;
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} else {
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chan[i].audPos=0;
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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DivSample* s=parent->getSample(chan[i].sample);
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unsigned char ctrl;
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switch (s->depth) {
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case DIV_SAMPLE_DEPTH_YMZ_ADPCM: ctrl=0x20; break;
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case DIV_SAMPLE_DEPTH_8BIT: ctrl=0x40; break;
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case DIV_SAMPLE_DEPTH_16BIT: ctrl=0x60; break;
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default: ctrl=0;
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}
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double off=(s->centerRate>=1)?((double)s->centerRate/8363.0):1.0;
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chan[i].freq=(int)round(off*parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE)/256.0)-1;
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].freq>511) chan[i].freq=511;
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// ADPCM has half the range
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if (s->depth==DIV_SAMPLE_DEPTH_YMZ_ADPCM && chan[i].freq>255) chan[i].freq=255;
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ctrl|=(chan[i].active?0x80:0)|((s->isLoopable())?0x10:0)|(chan[i].freq>>8);
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if (chan[i].keyOn) {
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unsigned int start=0;
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unsigned int loopStart=0;
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unsigned int loopEnd=0;
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unsigned int end=0;
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if (chan[i].sample>=0 && chan[i].sample<parent->song.sampleLen) {
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start=sampleOff[chan[i].sample];
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end=MIN(start+s->getCurBufLen(),getSampleMemCapacity()-1);
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}
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if (chan[i].audPos>0) {
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switch (s->depth) {
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case DIV_SAMPLE_DEPTH_YMZ_ADPCM: start+=chan[i].audPos/2; break;
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case DIV_SAMPLE_DEPTH_8BIT: start+=chan[i].audPos; break;
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case DIV_SAMPLE_DEPTH_16BIT: start+=chan[i].audPos*2; break;
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default: break;
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}
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start=MIN(start,end);
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}
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if (s->isLoopable()) {
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switch (s->depth) {
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case DIV_SAMPLE_DEPTH_YMZ_ADPCM: loopStart=start+s->loopStart/2; loopEnd=start+s->loopEnd/2; break;
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case DIV_SAMPLE_DEPTH_8BIT: loopStart=start+s->loopStart; loopEnd=start+s->loopEnd; break;
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case DIV_SAMPLE_DEPTH_16BIT: loopStart=start+s->loopStart*2; loopEnd=start+s->loopEnd*2; break;
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default: break;
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}
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loopEnd=MIN(loopEnd,end);
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loopStart=MIN(loopStart,loopEnd);
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}
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rWrite(0x01+i*4,ctrl&~0x80); // force keyoff first
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rWrite(0x20+i*4,(start>>16)&0xff);
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rWrite(0x21+i*4,(loopStart>>16)&0xff);
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rWrite(0x22+i*4,(loopEnd>>16)&0xff);
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rWrite(0x23+i*4,(end>>16)&0xff);
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rWrite(0x40+i*4,(start>>8)&0xff);
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rWrite(0x41+i*4,(loopStart>>8)&0xff);
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rWrite(0x42+i*4,(loopEnd>>8)&0xff);
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rWrite(0x43+i*4,(end>>8)&0xff);
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rWrite(0x60+i*4,start&0xff);
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rWrite(0x61+i*4,loopStart&0xff);
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rWrite(0x62+i*4,loopEnd&0xff);
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rWrite(0x63+i*4,end&0xff);
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if (!chan[i].std.vol.had) {
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chan[i].outVol=chan[i].vol;
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writeOutVol(i);
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}
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chan[i].keyOn=false;
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}
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if (chan[i].keyOff) {
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chan[i].keyOff=false;
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}
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if (chan[i].freqChanged) {
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rWrite(0x00+i*4,chan[i].freq&0xff);
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chan[i].freqChanged=false;
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}
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rWrite(0x01+i*4,ctrl);
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}
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}
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}
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int DivPlatformYMZ280B::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_AMIGA);
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chan[c.chan].isNewYMZ=ins->type==DIV_INS_YMZ280B;
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chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:255;
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chan[c.chan].sample=ins->amiga.getSample(c.value);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
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}
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if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
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chan[c.chan].sample=-1;
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}
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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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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chan[c.chan].macroInit(ins);
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if (!parent->song.brokenOutVol && !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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break;
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}
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].sample=-1;
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chan[c.chan].active=false;
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chan[c.chan].keyOff=true;
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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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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_INSTRUMENT:
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if (chan[c.chan].ins!=c.value || c.value2==1) {
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chan[c.chan].ins=c.value;
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}
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break;
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case DIV_CMD_VOLUME:
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if (chan[c.chan].vol!=c.value) {
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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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writeOutVol(c.chan);
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}
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}
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break;
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case DIV_CMD_GET_VOLUME:
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if (chan[c.chan].std.vol.has) {
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return chan[c.chan].vol;
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}
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return chan[c.chan].outVol;
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break;
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case DIV_CMD_PANNING:
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chan[c.chan].panning=MIN(parent->convertPanSplitToLinearLR(c.value,c.value2,15)+1,15);
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rWrite(0x03+c.chan*4,chan[c.chan].panning);
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break;
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case DIV_CMD_PITCH:
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chan[c.chan].pitch=c.value;
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_NOTE_PORTA: {
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int destFreq=NOTE_FREQUENCY(c.value2);
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bool return2=false;
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int multiplier=(parent->song.linearPitch==2)?1:256;
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if (destFreq>chan[c.chan].baseFreq) {
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chan[c.chan].baseFreq+=c.value*multiplier;
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if (chan[c.chan].baseFreq>=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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} else {
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chan[c.chan].baseFreq-=c.value*multiplier;
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if (chan[c.chan].baseFreq<=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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}
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chan[c.chan].freqChanged=true;
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if (return2) {
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chan[c.chan].inPorta=false;
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return 2;
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}
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break;
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}
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case DIV_CMD_LEGATO: {
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chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val-12):(0)));
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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break;
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}
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case DIV_CMD_PRE_PORTA:
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if (chan[c.chan].active && c.value2) {
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if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA));
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}
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if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
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chan[c.chan].inPorta=c.value;
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break;
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case DIV_CMD_SAMPLE_POS:
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chan[c.chan].audPos=c.value;
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chan[c.chan].setPos=true;
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break;
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case DIV_CMD_GET_VOLMAX:
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return 255;
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break;
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case DIV_ALWAYS_SET_VOLUME:
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return 1;
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break;
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default:
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break;
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}
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return 1;
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}
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void DivPlatformYMZ280B::writeOutVol(int ch) {
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unsigned char val=isMuted[ch]?0:chan[ch].outVol;
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rWrite(0x02+ch*4,val);
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}
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void DivPlatformYMZ280B::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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writeOutVol(ch);
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}
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void DivPlatformYMZ280B::forceIns() {
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for (int i=0; i<8; i++) {
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chan[i].insChanged=true;
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chan[i].freqChanged=true;
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chan[i].sample=-1;
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rWrite(0x03+i*4,chan[i].panning);
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}
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}
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void* DivPlatformYMZ280B::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformYMZ280B::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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DivDispatchOscBuffer* DivPlatformYMZ280B::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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void DivPlatformYMZ280B::reset() {
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memset(regPool,0,256);
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ymz280b.device_reset();
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rWrite(0xff,0x80); // enable keyon
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for (int i=0; i<8; i++) {
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chan[i]=DivPlatformYMZ280B::Channel();
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chan[i].std.setEngine(parent);
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rWrite(0x02+i*4,255);
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rWrite(0x03+i*4,8);
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}
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}
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bool DivPlatformYMZ280B::isStereo() {
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return true;
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}
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void DivPlatformYMZ280B::notifyInsChange(int ins) {
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for (int i=0; i<8; 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 DivPlatformYMZ280B::notifyWaveChange(int wave) {
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// TODO when wavetables are added
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// TODO they probably won't be added unless the samples reside in RAM
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}
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void DivPlatformYMZ280B::notifyInsDeletion(void* ins) {
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for (int i=0; i<8; i++) {
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chan[i].std.notifyInsDeletion((DivInstrument*)ins);
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}
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}
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void DivPlatformYMZ280B::poke(unsigned int addr, unsigned short val) {
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rWrite(addr,val);
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}
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void DivPlatformYMZ280B::poke(std::vector<DivRegWrite>& wlist) {
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for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
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}
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unsigned char* DivPlatformYMZ280B::getRegisterPool() {
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return regPool;
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}
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int DivPlatformYMZ280B::getRegisterPoolSize() {
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return 256;
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}
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float DivPlatformYMZ280B::getPostAmp() {
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// according to MAME core's mixing
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return 4.0f;
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}
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const void* DivPlatformYMZ280B::getSampleMem(int index) {
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return index == 0 ? sampleMem : NULL;
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}
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size_t DivPlatformYMZ280B::getSampleMemCapacity(int index) {
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return index == 0 ? 16777216 : 0;
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}
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size_t DivPlatformYMZ280B::getSampleMemUsage(int index) {
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return index == 0 ? sampleMemLen : 0;
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}
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bool DivPlatformYMZ280B::isSampleLoaded(int index, int sample) {
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if (index!=0) return false;
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if (sample<0 || sample>255) return false;
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return sampleLoaded[sample];
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}
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void DivPlatformYMZ280B::renderSamples(int sysID) {
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memset(sampleMem,0,getSampleMemCapacity());
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memset(sampleOff,0,256*sizeof(unsigned int));
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memset(sampleLoaded,0,256*sizeof(bool));
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size_t memPos=0;
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for (int i=0; i<parent->song.sampleLen; i++) {
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DivSample* s=parent->song.sample[i];
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if (!s->renderOn[0][sysID]) {
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sampleOff[i]=0;
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continue;
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}
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int length=s->getCurBufLen();
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unsigned char* src=(unsigned char*)s->getCurBuf();
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int actualLength=MIN((int)(getSampleMemCapacity()-memPos),length);
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if (actualLength>0) {
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#ifdef TA_BIG_ENDIAN
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memcpy(&sampleMem[memPos],src,actualLength);
|
|
#else
|
|
if (s->depth==DIV_SAMPLE_DEPTH_16BIT) {
|
|
for (int i=0; i<actualLength; i++) {
|
|
sampleMem[memPos+i]=src[i^1];
|
|
}
|
|
} else {
|
|
memcpy(&sampleMem[memPos],src,actualLength);
|
|
}
|
|
#endif
|
|
sampleOff[i]=memPos;
|
|
memPos+=length;
|
|
}
|
|
if (actualLength<length) {
|
|
logW("out of YMZ280B PCM memory for sample %d!",i);
|
|
break;
|
|
}
|
|
sampleLoaded[i]=true;
|
|
}
|
|
sampleMemLen=memPos;
|
|
}
|
|
|
|
void DivPlatformYMZ280B::setChipModel(int type) {
|
|
chipType=type;
|
|
}
|
|
|
|
void DivPlatformYMZ280B::setFlags(const DivConfig& flags) {
|
|
switch (chipType) {
|
|
default:
|
|
case 280:
|
|
switch (flags.getInt("clockSel",0)) {
|
|
case 0x01:
|
|
chipClock=COLOR_NTSC*4.0;
|
|
break;
|
|
case 0x02:
|
|
chipClock=COLOR_PAL*16.0/5.0;
|
|
break;
|
|
case 0x03:
|
|
chipClock=16000000;
|
|
break;
|
|
case 0x04:
|
|
chipClock=50000000.0/3.0;
|
|
break;
|
|
case 0x05:
|
|
chipClock=14000000;
|
|
break;
|
|
default:
|
|
chipClock=16934400;
|
|
break;
|
|
}
|
|
CHECK_CUSTOM_CLOCK;
|
|
rate=chipClock/384;
|
|
break;
|
|
case 759:
|
|
rate=32000;
|
|
chipClock=rate*384;
|
|
break;
|
|
}
|
|
for (int i=0; i<8; i++) {
|
|
oscBuf[i]->rate=rate;
|
|
}
|
|
}
|
|
|
|
int DivPlatformYMZ280B::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
|
|
for (int i=0; i<8; i++) {
|
|
isMuted[i]=false;
|
|
oscBuf[i]=new DivDispatchOscBuffer;
|
|
}
|
|
sampleMem=new unsigned char[getSampleMemCapacity()];
|
|
sampleMemLen=0;
|
|
ymz280b.device_start(sampleMem);
|
|
setFlags(flags);
|
|
reset();
|
|
|
|
return 8;
|
|
}
|
|
|
|
void DivPlatformYMZ280B::quit() {
|
|
delete[] sampleMem;
|
|
for (int i=0; i<8; i++) {
|
|
delete oscBuf[i];
|
|
}
|
|
}
|