mirror of
https://github.com/tildearrow/furnace.git
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more OPL preparation
DOES NOT WORK YET - JUST A PLACEHOLDER
This commit is contained in:
tildearrow
parent
8bda9df487
commit
c34b8325c9
4 changed files with 949 additions and 0 deletions
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@ -226,6 +226,7 @@ extern/adpcm/ymz_codec.c
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extern/Nuked-OPN2/ym3438.c
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extern/opm/opm.c
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extern/Nuked-OPLL/opll.c
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extern/Nuked-OPL3/opl3.c
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src/engine/platform/sound/sn76496.cpp
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src/engine/platform/sound/ay8910.cpp
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src/engine/platform/sound/saa1099.cpp
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@ -298,6 +299,7 @@ src/engine/platform/ym2610b.cpp
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src/engine/platform/ym2610bext.cpp
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src/engine/platform/ay.cpp
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src/engine/platform/ay8930.cpp
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src/engine/platform/opl.cpp
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src/engine/platform/tia.cpp
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src/engine/platform/saa.cpp
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src/engine/platform/amiga.cpp
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@ -34,6 +34,7 @@
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#include "platform/ym2610bext.h"
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#include "platform/ay.h"
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#include "platform/ay8930.h"
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#include "platform/opl.h"
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#include "platform/tia.h"
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#include "platform/saa.h"
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#include "platform/amiga.h"
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@ -210,6 +211,9 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
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((DivPlatformOPLL*)dispatch)->setVRC7(sys==DIV_SYSTEM_VRC7);
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((DivPlatformOPLL*)dispatch)->setProperDrums(sys==DIV_SYSTEM_OPLL_DRUMS);
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break;
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case DIV_SYSTEM_OPL3:
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dispatch=new DivPlatformOPL;
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break;
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case DIV_SYSTEM_SAA1099: {
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int saaCore=eng->getConfInt("saaCore",0);
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if (saaCore<0 || saaCore>2) saaCore=0;
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823
src/engine/platform/opl.cpp
Normal file
823
src/engine/platform/opl.cpp
Normal file
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@ -0,0 +1,823 @@
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/**
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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 "opl.h"
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#include "../engine.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) {pendingWrites[a]=v;}
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#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
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#define CHIP_FREQBASE 4720272
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// N = invalid
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#define N 255
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/*
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const unsigned char slotsOPL2[4][20]={
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{0, 1, 2, 6, 7, 8, 12, 13, 14}, // OP1
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{3, 4, 5, 9, 10, 11, 15, 16, 17}, // OP2
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{N, N, N, N, N, N, N, N, N},
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{N, N, N, N, N, N, N, N, N}
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};
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const unsigned char slotsOPL2Drums[4][20]={
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{0, 1, 2, 6, 7, 8, 12, 16, 14, 17, 13}, // OP1
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{3, 4, 5, 9, 10, 11, 15, N, N, N, N}, // OP2
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{N, N, N, N, N, N, N, N, N, N, N},
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{N, N, N, N, N, N, N, N, N, N, N}
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};
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const unsigned char slotsOPL3[4][20]={
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{0, 6, 1, 7, 2, 8, 18, 24, 19, 25, 20, 26, 30, 31, 32, 12, 13, 14}, // OP1
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{3, 9, 4, 10, 5, 11, 21, 27, 22, 28, 23, 29, 33, 34, 35, 15, 16, 17}, // OP2
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{6, N, 7, N, 8, N, 24, N, 25, N, 26, N, N, N, N, N, N, N}, // OP3
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{9, N, 10, N, 11, N, 27, N, 28, N, 29, N, N, N, N, N, N, N} // OP4
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};
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const unsigned char slotsOPL3Drums[4][20]={
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{0, 6, 1, 7, 2, 8, 18, 24, 19, 25, 20, 26, 30, 31, 32, 12, 16, 14, 17, 13}, // OP1
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{3, 9, 4, 10, 5, 11, 21, 27, 22, 28, 23, 29, 33, 34, 35, N, N, N, N, N}, // OP2
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{6, N, 7, N, 8, N, 24, N, 25, N, 26, N, N, N, N, N, N, N, N, N}, // OP3
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{9, N, 10, N, 11, N, 27, N, 28, N, 29, N, N, N, N, N, N, N, N, N} // OP4
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};
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*/
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#undef N
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const char* DivPlatformOPL::getEffectName(unsigned char effect) {
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switch (effect) {
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case 0x10:
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return "10xy: Setup LFO (x: enable; y: speed)";
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break;
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case 0x11:
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return "11xx: Set feedback (0 to 7)";
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break;
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case 0x12:
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return "12xx: Set level of operator 1 (0 highest, 3F lowest)";
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break;
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case 0x13:
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return "13xx: Set level of operator 2 (0 highest, 3F lowest)";
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break;
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case 0x14:
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return "14xx: Set level of operator 3 (0 highest, 3F lowest; 4-op only)";
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break;
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case 0x15:
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return "15xx: Set level of operator 4 (0 highest, 3F lowest; 4-op only)";
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break;
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case 0x16:
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return "16xy: Set operator multiplier (x: operator from 1 to 4; y: multiplier)";
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break;
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case 0x17:
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return "17xx: Enable channel 6 DAC";
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break;
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case 0x18:
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return "18xx: Toggle extended channel 3 mode";
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break;
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case 0x19:
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return "19xx: Set attack of all operators (0 to F)";
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break;
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case 0x1a:
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return "1Axx: Set attack of operator 1 (0 to F)";
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break;
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case 0x1b:
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return "1Bxx: Set attack of operator 2 (0 to F)";
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break;
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case 0x1c:
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return "1Cxx: Set attack of operator 3 (0 to F; 4-op only)";
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break;
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case 0x1d:
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return "1Dxx: Set attack of operator 4 (0 to F; 4-op only)";
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break;
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case 0x20:
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return "20xy: Set PSG noise mode (x: preset freq/ch3 freq; y: thin pulse/noise)";
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break;
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}
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return NULL;
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}
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void DivPlatformOPL::acquire_nuked(short* bufL, short* bufR, size_t start, size_t len) {
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static short o[2];
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static int os[2];
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for (size_t h=start; h<start+len; h++) {
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os[0]=0; os[1]=0;
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if (!writes.empty() && --delay<0) {
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delay=12;
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QueuedWrite& w=writes.front();
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if (w.addrOrVal) {
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OPL3_WriteReg(&fm,0x1+((w.addr>>8)<<1),w.val);
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//printf("write: %x = %.2x\n",w.addr,w.val);
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lastBusy=0;
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regPool[w.addr&0x1ff]=w.val;
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writes.pop();
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} else {
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lastBusy++;
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//printf("busycounter: %d\n",lastBusy);
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OPL3_WriteReg(&fm,0x0+((w.addr>>8)<<1),w.addr);
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w.addrOrVal=true;
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}
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}
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OPL3_Generate(&fm,o); os[0]+=o[0]; os[1]+=o[1];
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if (os[0]<-32768) os[0]=-32768;
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if (os[0]>32767) os[0]=32767;
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if (os[1]<-32768) os[1]=-32768;
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if (os[1]>32767) os[1]=32767;
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bufL[h]=os[0];
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bufR[h]=os[1];
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}
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}
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void DivPlatformOPL::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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//if (useYMFM) {
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// acquire_ymfm(bufL,bufR,start,len);
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//} else {
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acquire_nuked(bufL,bufR,start,len);
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//}
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}
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void DivPlatformOPL::tick() {
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/*
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for (int i=0; i<20; i++) {
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if (i==2 && extMode) continue;
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chan[i].std.next();
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if (chan[i].std.hadVol) {
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chan[i].outVol=(chan[i].vol*MIN(127,chan[i].std.vol))/127;
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for (int j=0; j<4; j++) {
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unsigned short baseAddr=chanOffs[i]|opOffs[j];
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DivInstrumentFM::Operator& op=chan[i].state.op[j];
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if (isMuted[i]) {
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rWrite(baseAddr+ADDR_TL,127);
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} else {
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if (isOutput[chan[i].state.alg][j]) {
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rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
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} else {
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rWrite(baseAddr+ADDR_TL,op.tl);
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}
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}
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}
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}
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if (chan[i].std.hadArp) {
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if (!chan[i].inPorta) {
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if (chan[i].std.arpMode) {
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chan[i].baseFreq=NOTE_FREQUENCY(chan[i].std.arp);
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} else {
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chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note+(signed char)chan[i].std.arp);
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}
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}
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chan[i].freqChanged=true;
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} else {
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if (chan[i].std.arpMode && chan[i].std.finishedArp) {
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chan[i].baseFreq=NOTE_FREQUENCY(chan[i].note);
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chan[i].freqChanged=true;
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}
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}
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if (chan[i].std.hadAlg) {
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chan[i].state.alg=chan[i].std.alg;
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rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
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if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
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unsigned short baseAddr=chanOffs[i]|opOffs[j];
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DivInstrumentFM::Operator& op=chan[i].state.op[j];
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if (isMuted[i]) {
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rWrite(baseAddr+ADDR_TL,127);
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} else {
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if (isOutput[chan[i].state.alg][j]) {
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rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
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} else {
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rWrite(baseAddr+ADDR_TL,op.tl);
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}
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}
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}
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}
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if (chan[i].std.hadFb) {
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chan[i].state.fb=chan[i].std.fb;
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rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
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}
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if (chan[i].std.hadFms) {
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chan[i].state.fms=chan[i].std.fms;
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rWrite(chanOffs[i]+ADDR_LRAF,(isMuted[i]?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
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}
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if (chan[i].std.hadAms) {
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chan[i].state.ams=chan[i].std.ams;
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rWrite(chanOffs[i]+ADDR_LRAF,(isMuted[i]?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
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}
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for (int j=0; j<4; j++) {
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unsigned short baseAddr=chanOffs[i]|opOffs[j];
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DivInstrumentFM::Operator& op=chan[i].state.op[j];
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DivMacroInt::IntOp& m=chan[i].std.op[j];
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if (m.hadAm) {
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op.am=m.am;
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rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
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}
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if (m.hadAr) {
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op.ar=m.ar;
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rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
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}
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if (m.hadDr) {
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op.dr=m.dr;
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rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
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}
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if (m.hadMult) {
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op.mult=m.mult;
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rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
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}
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if (m.hadRr) {
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op.rr=m.rr;
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rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
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}
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if (m.hadSl) {
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op.sl=m.sl;
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rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
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}
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if (m.hadTl) {
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op.tl=127-m.tl;
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if (isMuted[i]) {
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rWrite(baseAddr+ADDR_TL,127);
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} else {
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if (isOutput[chan[i].state.alg][j]) {
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rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
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} else {
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rWrite(baseAddr+ADDR_TL,op.tl);
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}
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}
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}
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if (m.hadRs) {
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op.rs=m.rs;
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rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
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}
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if (m.hadDt) {
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op.dt=m.dt;
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rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
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}
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if (m.hadD2r) {
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op.d2r=m.d2r;
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rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
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}
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if (m.hadSsg) {
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op.ssgEnv=m.ssg;
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rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
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}
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}
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if (chan[i].keyOn || chan[i].keyOff) {
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immWrite(0x28,0x00|konOffs[i]);
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chan[i].keyOff=false;
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}
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}
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*/
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for (int i=0; i<512; i++) {
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if (pendingWrites[i]!=oldWrites[i]) {
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immWrite(i,pendingWrites[i]&0xff);
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oldWrites[i]=pendingWrites[i];
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}
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}
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/*
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for (int i=0; i<20; i++) {
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if (chan[i].freqChanged) {
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chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,octave(chan[i].baseFreq));
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if (chan[i].freq>262143) chan[i].freq=262143;
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int freqt=toFreq(chan[i].freq);
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immWrite(chanOffs[i]+ADDR_FREQH,freqt>>8);
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immWrite(chanOffs[i]+ADDR_FREQ,freqt&0xff);
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if (chan[i].furnaceDac && dacMode) {
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double off=1.0;
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if (dacSample>=0 && dacSample<parent->song.sampleLen) {
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DivSample* s=parent->getSample(dacSample);
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if (s->centerRate<1) {
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off=1.0;
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} else {
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off=8363.0/(double)s->centerRate;
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}
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}
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dacRate=(1280000*1.25*off)/MAX(1,chan[i].baseFreq);
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if (dacRate<1) dacRate=1;
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if (dumpWrites) addWrite(0xffff0001,1280000/dacRate);
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}
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chan[i].freqChanged=false;
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}
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if (chan[i].keyOn) {
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immWrite(0x28,0xf0|konOffs[i]);
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chan[i].keyOn=false;
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}
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}
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*/
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}
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int DivPlatformOPL::octave(int freq) {
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if (freq>=82432) {
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return 128;
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} else if (freq>=41216) {
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return 64;
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} else if (freq>=20608) {
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return 32;
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} else if (freq>=10304) {
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return 16;
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} else if (freq>=5152) {
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return 8;
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} else if (freq>=2576) {
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return 4;
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} else if (freq>=1288) {
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return 2;
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} else {
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return 1;
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}
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return 1;
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}
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int DivPlatformOPL::toFreq(int freq) {
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if (freq>=82432) {
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return 0x3800|((freq>>7)&0x7ff);
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} else if (freq>=41216) {
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return 0x3000|((freq>>6)&0x7ff);
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} else if (freq>=20608) {
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return 0x2800|((freq>>5)&0x7ff);
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} else if (freq>=10304) {
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return 0x2000|((freq>>4)&0x7ff);
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} else if (freq>=5152) {
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return 0x1800|((freq>>3)&0x7ff);
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} else if (freq>=2576) {
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return 0x1000|((freq>>2)&0x7ff);
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} else if (freq>=1288) {
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||||
return 0x800|((freq>>1)&0x7ff);
|
||||
} else {
|
||||
return freq&0x7ff;
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformOPL::muteChannel(int ch, bool mute) {
|
||||
isMuted[ch]=mute;
|
||||
/*
|
||||
for (int j=0; j<4; j++) {
|
||||
unsigned short baseAddr=chanOffs[ch]|opOffs[j];
|
||||
DivInstrumentFM::Operator& op=chan[ch].state.op[j];
|
||||
if (isMuted[ch]) {
|
||||
rWrite(baseAddr+ADDR_TL,127);
|
||||
} else {
|
||||
if (isOutput[chan[ch].state.alg][j]) {
|
||||
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[ch].outVol&0x7f))/127));
|
||||
} else {
|
||||
rWrite(baseAddr+ADDR_TL,op.tl);
|
||||
}
|
||||
}
|
||||
}
|
||||
rWrite(chanOffs[ch]+ADDR_LRAF,(isMuted[ch]?0:(chan[ch].pan<<6))|(chan[ch].state.fms&7)|((chan[ch].state.ams&3)<<4));
|
||||
*/
|
||||
}
|
||||
|
||||
int DivPlatformOPL::dispatch(DivCommand c) {
|
||||
switch (c.cmd) {
|
||||
case DIV_CMD_NOTE_ON: {
|
||||
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
|
||||
|
||||
if (chan[c.chan].insChanged) {
|
||||
chan[c.chan].state=ins->fm;
|
||||
}
|
||||
|
||||
chan[c.chan].std.init(ins);
|
||||
if (!chan[c.chan].std.willVol) {
|
||||
chan[c.chan].outVol=chan[c.chan].vol;
|
||||
}
|
||||
|
||||
/*
|
||||
for (int i=0; i<4; i++) {
|
||||
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
|
||||
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
|
||||
if (isMuted[c.chan]) {
|
||||
rWrite(baseAddr+ADDR_TL,127);
|
||||
} else {
|
||||
if (isOutput[chan[c.chan].state.alg][i]) {
|
||||
if (!chan[c.chan].active || chan[c.chan].insChanged) {
|
||||
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
|
||||
}
|
||||
} else {
|
||||
if (chan[c.chan].insChanged) {
|
||||
rWrite(baseAddr+ADDR_TL,op.tl);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (chan[c.chan].insChanged) {
|
||||
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
|
||||
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
|
||||
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
|
||||
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
|
||||
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
|
||||
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
|
||||
}
|
||||
}
|
||||
if (chan[c.chan].insChanged) {
|
||||
rWrite(chanOffs[c.chan]+ADDR_FB_ALG,(chan[c.chan].state.alg&7)|(chan[c.chan].state.fb<<3));
|
||||
rWrite(chanOffs[c.chan]+ADDR_LRAF,(isMuted[c.chan]?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
|
||||
}
|
||||
*/
|
||||
chan[c.chan].insChanged=false;
|
||||
|
||||
if (c.value!=DIV_NOTE_NULL) {
|
||||
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
|
||||
chan[c.chan].note=c.value;
|
||||
chan[c.chan].freqChanged=true;
|
||||
}
|
||||
chan[c.chan].keyOn=true;
|
||||
chan[c.chan].active=true;
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_NOTE_OFF:
|
||||
if (c.chan==5) {
|
||||
dacSample=-1;
|
||||
if (dumpWrites) addWrite(0xffff0002,0);
|
||||
}
|
||||
chan[c.chan].keyOff=true;
|
||||
chan[c.chan].keyOn=false;
|
||||
chan[c.chan].active=false;
|
||||
break;
|
||||
case DIV_CMD_NOTE_OFF_ENV:
|
||||
if (c.chan==5) {
|
||||
dacSample=-1;
|
||||
if (dumpWrites) addWrite(0xffff0002,0);
|
||||
}
|
||||
chan[c.chan].keyOff=true;
|
||||
chan[c.chan].keyOn=false;
|
||||
chan[c.chan].active=false;
|
||||
chan[c.chan].std.release();
|
||||
break;
|
||||
case DIV_CMD_ENV_RELEASE:
|
||||
chan[c.chan].std.release();
|
||||
break;
|
||||
case DIV_CMD_VOLUME: {
|
||||
chan[c.chan].vol=c.value;
|
||||
if (!chan[c.chan].std.hasVol) {
|
||||
chan[c.chan].outVol=c.value;
|
||||
}
|
||||
/*
|
||||
for (int i=0; i<4; i++) {
|
||||
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
|
||||
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
|
||||
if (isMuted[c.chan]) {
|
||||
rWrite(baseAddr+ADDR_TL,127);
|
||||
} else {
|
||||
if (isOutput[chan[c.chan].state.alg][i]) {
|
||||
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
|
||||
} else {
|
||||
rWrite(baseAddr+ADDR_TL,op.tl);
|
||||
}
|
||||
}
|
||||
}
|
||||
*/
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_GET_VOLUME: {
|
||||
return chan[c.chan].vol;
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_INSTRUMENT:
|
||||
if (chan[c.chan].ins!=c.value || c.value2==1) {
|
||||
chan[c.chan].insChanged=true;
|
||||
}
|
||||
chan[c.chan].ins=c.value;
|
||||
break;
|
||||
case DIV_CMD_PANNING: {
|
||||
switch (c.value) {
|
||||
case 0x01:
|
||||
chan[c.chan].pan=1;
|
||||
break;
|
||||
case 0x10:
|
||||
chan[c.chan].pan=2;
|
||||
break;
|
||||
default:
|
||||
chan[c.chan].pan=3;
|
||||
break;
|
||||
}
|
||||
//rWrite(chanOffs[c.chan]+ADDR_LRAF,(isMuted[c.chan]?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_PITCH: {
|
||||
chan[c.chan].pitch=c.value;
|
||||
chan[c.chan].freqChanged=true;
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_NOTE_PORTA: {
|
||||
int destFreq=NOTE_FREQUENCY(c.value2);
|
||||
int newFreq;
|
||||
bool return2=false;
|
||||
if (destFreq>chan[c.chan].baseFreq) {
|
||||
newFreq=chan[c.chan].baseFreq+c.value*octave(chan[c.chan].baseFreq);
|
||||
if (newFreq>=destFreq) {
|
||||
newFreq=destFreq;
|
||||
return2=true;
|
||||
}
|
||||
} else {
|
||||
newFreq=chan[c.chan].baseFreq-c.value*octave(chan[c.chan].baseFreq);
|
||||
if (newFreq<=destFreq) {
|
||||
newFreq=destFreq;
|
||||
return2=true;
|
||||
}
|
||||
}
|
||||
if (!chan[c.chan].portaPause) {
|
||||
if (octave(chan[c.chan].baseFreq)!=octave(newFreq)) {
|
||||
chan[c.chan].portaPause=true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
chan[c.chan].baseFreq=newFreq;
|
||||
chan[c.chan].portaPause=false;
|
||||
chan[c.chan].freqChanged=true;
|
||||
if (return2) {
|
||||
chan[c.chan].inPorta=false;
|
||||
return 2;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_SAMPLE_MODE: {
|
||||
dacMode=c.value;
|
||||
rWrite(0x2b,c.value<<7);
|
||||
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_LEGATO: {
|
||||
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
|
||||
chan[c.chan].note=c.value;
|
||||
chan[c.chan].freqChanged=true;
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_FM_LFO: {
|
||||
lfoValue=(c.value&7)|((c.value>>4)<<3);
|
||||
rWrite(0x22,lfoValue);
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_FM_FB: {
|
||||
chan[c.chan].state.fb=c.value&7;
|
||||
//rWrite(chanOffs[c.chan]+ADDR_FB_ALG,(chan[c.chan].state.alg&7)|(chan[c.chan].state.fb<<3));
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_FM_MULT: {
|
||||
/*
|
||||
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
|
||||
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
|
||||
op.mult=c.value2&15;
|
||||
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
|
||||
*/
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_FM_TL: {
|
||||
/*
|
||||
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
|
||||
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
|
||||
op.tl=c.value2;
|
||||
if (isMuted[c.chan]) {
|
||||
rWrite(baseAddr+ADDR_TL,127);
|
||||
} else {
|
||||
if (isOutput[chan[c.chan].state.alg][c.value]) {
|
||||
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[c.chan].outVol&0x7f))/127));
|
||||
} else {
|
||||
rWrite(baseAddr+ADDR_TL,op.tl);
|
||||
}
|
||||
}
|
||||
*/
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_FM_AR: {
|
||||
/*
|
||||
if (c.value<0) {
|
||||
for (int i=0; i<4; i++) {
|
||||
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
|
||||
op.ar=c.value2&31;
|
||||
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
|
||||
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
|
||||
}
|
||||
} else {
|
||||
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
|
||||
op.ar=c.value2&31;
|
||||
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
|
||||
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
|
||||
}
|
||||
*/
|
||||
|
||||
break;
|
||||
}
|
||||
case DIV_ALWAYS_SET_VOLUME:
|
||||
return 0;
|
||||
break;
|
||||
case DIV_CMD_GET_VOLMAX:
|
||||
return 127;
|
||||
break;
|
||||
case DIV_CMD_PRE_PORTA:
|
||||
chan[c.chan].inPorta=c.value;
|
||||
break;
|
||||
case DIV_CMD_PRE_NOTE:
|
||||
break;
|
||||
default:
|
||||
//printf("WARNING: unimplemented command %d\n",c.cmd);
|
||||
break;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
void DivPlatformOPL::forceIns() {
|
||||
/*
|
||||
for (int i=0; i<20; i++) {
|
||||
for (int j=0; j<4; j++) {
|
||||
unsigned short baseAddr=chanOffs[i]|opOffs[j];
|
||||
DivInstrumentFM::Operator& op=chan[i].state.op[j];
|
||||
if (isMuted[i]) {
|
||||
rWrite(baseAddr+ADDR_TL,127);
|
||||
} else {
|
||||
if (isOutput[chan[i].state.alg][j]) {
|
||||
rWrite(baseAddr+ADDR_TL,127-(((127-op.tl)*(chan[i].outVol&0x7f))/127));
|
||||
} else {
|
||||
rWrite(baseAddr+ADDR_TL,op.tl);
|
||||
}
|
||||
}
|
||||
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
|
||||
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
|
||||
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
|
||||
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
|
||||
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
|
||||
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
|
||||
}
|
||||
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
|
||||
rWrite(chanOffs[i]+ADDR_LRAF,(isMuted[i]?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
|
||||
if (chan[i].active) {
|
||||
chan[i].keyOn=true;
|
||||
chan[i].freqChanged=true;
|
||||
}
|
||||
}
|
||||
if (dacMode) {
|
||||
rWrite(0x2b,0x80);
|
||||
}
|
||||
immWrite(0x22,lfoValue);
|
||||
*/
|
||||
}
|
||||
|
||||
void DivPlatformOPL::toggleRegisterDump(bool enable) {
|
||||
DivDispatch::toggleRegisterDump(enable);
|
||||
}
|
||||
|
||||
void* DivPlatformOPL::getChanState(int ch) {
|
||||
return &chan[ch];
|
||||
}
|
||||
|
||||
unsigned char* DivPlatformOPL::getRegisterPool() {
|
||||
return regPool;
|
||||
}
|
||||
|
||||
int DivPlatformOPL::getRegisterPoolSize() {
|
||||
return 512;
|
||||
}
|
||||
|
||||
void DivPlatformOPL::reset() {
|
||||
while (!writes.empty()) writes.pop();
|
||||
memset(regPool,0,512);
|
||||
/*
|
||||
if (useYMFM) {
|
||||
fm_ymfm->reset();
|
||||
}
|
||||
*/
|
||||
OPL3_Reset(&fm,rate);
|
||||
if (dumpWrites) {
|
||||
addWrite(0xffffffff,0);
|
||||
}
|
||||
for (int i=0; i<20; i++) {
|
||||
chan[i]=DivPlatformOPL::Channel();
|
||||
chan[i].vol=0x3f;
|
||||
chan[i].outVol=0x3f;
|
||||
}
|
||||
|
||||
for (int i=0; i<512; i++) {
|
||||
oldWrites[i]=-1;
|
||||
pendingWrites[i]=-1;
|
||||
}
|
||||
|
||||
lastBusy=60;
|
||||
dacMode=0;
|
||||
dacPeriod=0;
|
||||
dacPos=0;
|
||||
dacRate=0;
|
||||
dacSample=-1;
|
||||
sampleBank=0;
|
||||
lfoValue=8;
|
||||
|
||||
extMode=false;
|
||||
|
||||
// LFO
|
||||
immWrite(0x22,lfoValue);
|
||||
|
||||
delay=0;
|
||||
}
|
||||
|
||||
bool DivPlatformOPL::isStereo() {
|
||||
return true;
|
||||
}
|
||||
|
||||
bool DivPlatformOPL::keyOffAffectsArp(int ch) {
|
||||
return (ch>5);
|
||||
}
|
||||
|
||||
bool DivPlatformOPL::keyOffAffectsPorta(int ch) {
|
||||
return (ch>5);
|
||||
}
|
||||
|
||||
void DivPlatformOPL::notifyInsChange(int ins) {
|
||||
for (int i=0; i<20; i++) {
|
||||
if (chan[i].ins==ins) {
|
||||
chan[i].insChanged=true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformOPL::notifyInsDeletion(void* ins) {
|
||||
}
|
||||
|
||||
void DivPlatformOPL::poke(unsigned int addr, unsigned short val) {
|
||||
immWrite(addr,val);
|
||||
}
|
||||
|
||||
void DivPlatformOPL::poke(std::vector<DivRegWrite>& wlist) {
|
||||
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
|
||||
}
|
||||
|
||||
int DivPlatformOPL::getPortaFloor(int ch) {
|
||||
return (ch>5)?12:0;
|
||||
}
|
||||
|
||||
void DivPlatformOPL::setYMFM(bool use) {
|
||||
useYMFM=use;
|
||||
}
|
||||
|
||||
void DivPlatformOPL::setFlags(unsigned int flags) {
|
||||
/*
|
||||
if (flags==3) {
|
||||
chipClock=COLOR_NTSC*12.0/7.0;
|
||||
} else if (flags==2) {
|
||||
chipClock=8000000.0;
|
||||
} else if (flags==1) {
|
||||
chipClock=COLOR_PAL*12.0/7.0;
|
||||
} else {
|
||||
chipClock=COLOR_NTSC*15.0/7.0;
|
||||
}
|
||||
ladder=flags&0x80000000;
|
||||
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
|
||||
if (useYMFM) {
|
||||
if (fm_ymfm!=NULL) delete fm_ymfm;
|
||||
if (ladder) {
|
||||
fm_ymfm=new ymfm::ym2612(iface);
|
||||
} else {
|
||||
fm_ymfm=new ymfm::ym3438(iface);
|
||||
}
|
||||
rate=chipClock/144;
|
||||
} else {
|
||||
rate=chipClock/36;
|
||||
}*/
|
||||
|
||||
chipClock=COLOR_NTSC*4.0;
|
||||
rate=chipClock/32;
|
||||
}
|
||||
|
||||
int DivPlatformOPL::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
|
||||
parent=p;
|
||||
dumpWrites=false;
|
||||
ladder=false;
|
||||
skipRegisterWrites=false;
|
||||
for (int i=0; i<20; i++) {
|
||||
isMuted[i]=false;
|
||||
}
|
||||
setFlags(flags);
|
||||
|
||||
reset();
|
||||
return 10;
|
||||
}
|
||||
|
||||
void DivPlatformOPL::quit() {
|
||||
}
|
||||
|
||||
DivPlatformOPL::~DivPlatformOPL() {
|
||||
}
|
||||
120
src/engine/platform/opl.h
Normal file
120
src/engine/platform/opl.h
Normal file
|
|
@ -0,0 +1,120 @@
|
|||
/**
|
||||
* 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 _OPL_H
|
||||
#define _OPL_H
|
||||
#include "../dispatch.h"
|
||||
#include "../macroInt.h"
|
||||
#include <queue>
|
||||
#include "../../../extern/Nuked-OPL3/opl3.h"
|
||||
|
||||
class DivPlatformOPL: public DivDispatch {
|
||||
protected:
|
||||
struct Channel {
|
||||
DivInstrumentFM state;
|
||||
DivMacroInt std;
|
||||
unsigned char freqH, freqL;
|
||||
int freq, baseFreq, pitch, note;
|
||||
unsigned char ins;
|
||||
bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, furnaceDac, inPorta;
|
||||
int vol, outVol;
|
||||
unsigned char pan;
|
||||
Channel():
|
||||
freqH(0),
|
||||
freqL(0),
|
||||
freq(0),
|
||||
baseFreq(0),
|
||||
pitch(0),
|
||||
note(0),
|
||||
ins(-1),
|
||||
active(false),
|
||||
insChanged(true),
|
||||
freqChanged(false),
|
||||
keyOn(false),
|
||||
keyOff(false),
|
||||
portaPause(false),
|
||||
furnaceDac(false),
|
||||
inPorta(false),
|
||||
vol(0),
|
||||
pan(3) {}
|
||||
};
|
||||
Channel chan[20];
|
||||
bool isMuted[20];
|
||||
struct QueuedWrite {
|
||||
unsigned short addr;
|
||||
unsigned char val;
|
||||
bool addrOrVal;
|
||||
QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v), addrOrVal(false) {}
|
||||
};
|
||||
std::queue<QueuedWrite> writes;
|
||||
opl3_chip fm;
|
||||
int delay;
|
||||
unsigned char lastBusy;
|
||||
|
||||
unsigned char regPool[512];
|
||||
|
||||
bool dacMode;
|
||||
int dacPeriod;
|
||||
int dacRate;
|
||||
unsigned int dacPos;
|
||||
int dacSample;
|
||||
unsigned char sampleBank;
|
||||
unsigned char lfoValue;
|
||||
|
||||
bool extMode, useYMFM;
|
||||
bool ladder;
|
||||
|
||||
short oldWrites[512];
|
||||
short pendingWrites[512];
|
||||
|
||||
int octave(int freq);
|
||||
int toFreq(int freq);
|
||||
|
||||
friend void putDispatchChan(void*,int,int);
|
||||
|
||||
void acquire_nuked(short* bufL, short* bufR, size_t start, size_t len);
|
||||
//void acquire_ymfm(short* bufL, short* bufR, size_t start, size_t len);
|
||||
|
||||
public:
|
||||
void acquire(short* bufL, short* bufR, size_t start, size_t len);
|
||||
int dispatch(DivCommand c);
|
||||
void* getChanState(int chan);
|
||||
unsigned char* getRegisterPool();
|
||||
int getRegisterPoolSize();
|
||||
void reset();
|
||||
void forceIns();
|
||||
void tick();
|
||||
void muteChannel(int ch, bool mute);
|
||||
bool isStereo();
|
||||
void setYMFM(bool use);
|
||||
bool keyOffAffectsArp(int ch);
|
||||
bool keyOffAffectsPorta(int ch);
|
||||
void toggleRegisterDump(bool enable);
|
||||
void setFlags(unsigned int flags);
|
||||
void notifyInsChange(int ins);
|
||||
void notifyInsDeletion(void* ins);
|
||||
int getPortaFloor(int ch);
|
||||
void poke(unsigned int addr, unsigned short val);
|
||||
void poke(std::vector<DivRegWrite>& wlist);
|
||||
const char* getEffectName(unsigned char effect);
|
||||
int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
|
||||
void quit();
|
||||
~DivPlatformOPL();
|
||||
};
|
||||
#endif
|
||||
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Reference in a new issue