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OPL: fix channel muting - PLEASE READ!

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**SUBMODULES UPDATED** - Nuked-OPL3 is no longer a submodule as I
had to directly modify the core for this
if you mess up while removing Nuked-OPL3 from your repo, delete
everything and clone again

fixes #414
This commit is contained in:
tildearrow 2022-05-04 18:06:32 -05:00
parent e50df18393
commit b75336bcb6
10 changed files with 2175 additions and 6 deletions
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3
.gitmodules vendored
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@ -19,6 +19,3 @@
[submodule "extern/adpcm"] [submodule "extern/adpcm"]
path = extern/adpcm path = extern/adpcm
url = https://github.com/superctr/adpcm url = https://github.com/superctr/adpcm
[submodule "extern/Nuked-OPL3"]
path = extern/Nuked-OPL3
url = https://github.com/nukeykt/Nuked-OPL3.git

2
CMakeLists.txt
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@ -237,7 +237,7 @@ extern/adpcm/ymz_codec.c
extern/Nuked-OPN2/ym3438.c extern/Nuked-OPN2/ym3438.c
extern/opm/opm.c extern/opm/opm.c
extern/Nuked-OPLL/opll.c extern/Nuked-OPLL/opll.c
extern/Nuked-OPL3/opl3.c extern/opl/opl3.c
src/engine/platform/sound/sn76496.cpp src/engine/platform/sound/sn76496.cpp
src/engine/platform/sound/ay8910.cpp src/engine/platform/sound/ay8910.cpp
src/engine/platform/sound/saa1099.cpp src/engine/platform/sound/saa1099.cpp

1
extern/Nuked-OPL3 vendored

@ -1 +0,0 @@
Subproject commit bb5c8d08a85779c42b75c79d7b84f365a1b93b66

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@ -0,0 +1,12 @@
# These are supported funding model platforms
github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
patreon: nukeykt # Replace with a single Patreon username
open_collective: # Replace with a single Open Collective username
ko_fi: # Replace with a single Ko-fi username
tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
liberapay: # Replace with a single Liberapay username
issuehunt: # Replace with a single IssueHunt username
otechie: # Replace with a single Otechie username
custom: ['https://www.buymeacoffee.com/nukeykt', 'https://paypal.me/nukeykt'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

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@ -0,0 +1,504 @@
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@ -0,0 +1,4 @@
# modification disclaimer
this is a modified version of Nuked-OPL3 which implements channel muting in the core.
see [this issue](https://github.com/tildearrow/furnace/issues/414) for more information.

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/* Nuked OPL3
* Copyright (C) 2013-2020 Nuke.YKT
*
* This file is part of Nuked OPL3.
*
* Nuked OPL3 is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1
* of the License, or (at your option) any later version.
*
* Nuked OPL3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Nuked OPL3. If not, see <https://www.gnu.org/licenses/>.
* Nuked OPL3 emulator.
* Thanks:
* MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh):
* Feedback and Rhythm part calculation information.
* forums.submarine.org.uk(carbon14, opl3):
* Tremolo and phase generator calculation information.
* OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
* OPL2 ROMs.
* siliconpr0n.org(John McMaster, digshadow):
* YMF262 and VRC VII decaps and die shots.
*
* version: 1.8
*/
#ifndef OPL_OPL3_H
#define OPL_OPL3_H
#ifdef __cplusplus
extern "C" {
#endif
#include <inttypes.h>
#ifndef OPL_ENABLE_STEREOEXT
#define OPL_ENABLE_STEREOEXT 0
#endif
#define OPL_WRITEBUF_SIZE 1024
#define OPL_WRITEBUF_DELAY 2
typedef struct _opl3_slot opl3_slot;
typedef struct _opl3_channel opl3_channel;
typedef struct _opl3_chip opl3_chip;
struct _opl3_slot {
opl3_channel *channel;
opl3_chip *chip;
int16_t out;
int16_t fbmod;
int16_t *mod;
int16_t prout;
uint16_t eg_rout;
uint16_t eg_out;
uint8_t eg_inc;
uint8_t eg_gen;
uint8_t eg_rate;
uint8_t eg_ksl;
uint8_t *trem;
uint8_t reg_vib;
uint8_t reg_type;
uint8_t reg_ksr;
uint8_t reg_mult;
uint8_t reg_ksl;
uint8_t reg_tl;
uint8_t reg_ar;
uint8_t reg_dr;
uint8_t reg_sl;
uint8_t reg_rr;
uint8_t reg_wf;
uint8_t key;
uint32_t pg_reset;
uint32_t pg_phase;
uint16_t pg_phase_out;
uint8_t slot_num;
};
struct _opl3_channel {
opl3_slot *slots[2];
opl3_channel *pair;
opl3_chip *chip;
int16_t *out[4];
#if OPL_ENABLE_STEREOEXT
int32_t leftpan;
int32_t rightpan;
#endif
uint8_t chtype;
uint16_t f_num;
uint8_t block;
uint8_t fb;
uint8_t con;
uint8_t alg;
uint8_t ksv;
uint16_t cha, chb;
uint8_t ch_num;
uint8_t muted;
};
typedef struct _opl3_writebuf {
uint64_t time;
uint16_t reg;
uint8_t data;
} opl3_writebuf;
struct _opl3_chip {
opl3_channel channel[18];
opl3_slot slot[36];
uint16_t timer;
uint64_t eg_timer;
uint8_t eg_timerrem;
uint8_t eg_state;
uint8_t eg_add;
uint8_t newm;
uint8_t nts;
uint8_t rhy;
uint8_t vibpos;
uint8_t vibshift;
uint8_t tremolo;
uint8_t tremolopos;
uint8_t tremoloshift;
uint32_t noise;
int16_t zeromod;
int32_t mixbuff[2];
uint8_t rm_hh_bit2;
uint8_t rm_hh_bit3;
uint8_t rm_hh_bit7;
uint8_t rm_hh_bit8;
uint8_t rm_tc_bit3;
uint8_t rm_tc_bit5;
#if OPL_ENABLE_STEREOEXT
uint8_t stereoext;
#endif
/* OPL3L */
int32_t rateratio;
int32_t samplecnt;
int16_t oldsamples[2];
int16_t samples[2];
uint64_t writebuf_samplecnt;
uint32_t writebuf_cur;
uint32_t writebuf_last;
uint64_t writebuf_lasttime;
opl3_writebuf writebuf[OPL_WRITEBUF_SIZE];
};
void OPL3_Generate(opl3_chip *chip, int16_t *buf);
void OPL3_GenerateResampled(opl3_chip *chip, int16_t *buf);
void OPL3_Reset(opl3_chip *chip, uint32_t samplerate);
void OPL3_WriteReg(opl3_chip *chip, uint16_t reg, uint8_t v);
void OPL3_WriteRegBuffered(opl3_chip *chip, uint16_t reg, uint8_t v);
void OPL3_GenerateStream(opl3_chip *chip, int16_t *sndptr, uint32_t numsamples);
#ifdef __cplusplus
}
#endif
#endif

9
src/engine/platform/opl.cpp
View file

@ -564,6 +564,9 @@ int DivPlatformOPL::toFreq(int freq) {
void DivPlatformOPL::muteChannel(int ch, bool mute) { void DivPlatformOPL::muteChannel(int ch, bool mute) {
isMuted[ch]=mute; isMuted[ch]=mute;
if (ch<melodicChans) {
fm.channel[outChanMap[ch]].muted=mute;
}
int ops=(slots[3][ch]!=255 && chan[ch].state.ops==4 && oplType==3)?4:2; int ops=(slots[3][ch]!=255 && chan[ch].state.ops==4 && oplType==3)?4:2;
chan[ch].fourOp=(ops==4); chan[ch].fourOp=(ops==4);
update4OpMask=true; update4OpMask=true;
@ -1226,10 +1229,12 @@ void DivPlatformOPL::reset() {
properDrums=properDrumsSys; properDrums=properDrumsSys;
if (oplType==3) { if (oplType==3) {
chanMap=properDrums?chanMapOPL3Drums:chanMapOPL3; chanMap=properDrums?chanMapOPL3Drums:chanMapOPL3;
outChanMap=outChanMapOPL3;
melodicChans=properDrums?15:18; melodicChans=properDrums?15:18;
totalChans=properDrums?20:18; totalChans=properDrums?20:18;
} else { } else {
chanMap=properDrums?chanMapOPL2Drums:chanMapOPL2; chanMap=properDrums?chanMapOPL2Drums:chanMapOPL2;
outChanMap=outChanMapOPL2;
melodicChans=properDrums?6:9; melodicChans=properDrums?6:9;
totalChans=properDrums?11:9; totalChans=properDrums?11:9;
} }
@ -1240,6 +1245,10 @@ void DivPlatformOPL::reset() {
chan[i].vol=0x3f; chan[i].vol=0x3f;
chan[i].outVol=0x3f; chan[i].outVol=0x3f;
} }
for (int i=0; i<melodicChans; i++) {
fm.channel[outChanMap[i]].muted=isMuted[i];
}
for (int i=0; i<512; i++) { for (int i=0; i<512; i++) {
oldWrites[i]=-1; oldWrites[i]=-1;

2
src/engine/platform/opl.h
View file

@ -22,7 +22,7 @@
#include "../dispatch.h" #include "../dispatch.h"
#include "../macroInt.h" #include "../macroInt.h"
#include <queue> #include <queue>
#include "../../../extern/Nuked-OPL3/opl3.h" #include "../../../extern/opl/opl3.h"
class DivPlatformOPL: public DivDispatch { class DivPlatformOPL: public DivDispatch {
protected: protected: