mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-28 15:33:01 +00:00
c0e9b48b5b
SAA1099 (SAASound and MAME), Lynx, MMC5, N163, PC Engine, PC Speaker, PET, QSound, WonderSwan, VERA, VIC-20, VRC6 and X1-010!
457 lines
11 KiB
C++
457 lines
11 KiB
C++
/**
|
|
* Furnace Tracker - multi-system chiptune tracker
|
|
* Copyright (C) 2021-2022 tildearrow and contributors
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "pcspkr.h"
|
|
#include "../engine.h"
|
|
#include <math.h>
|
|
|
|
#ifdef __linux__
|
|
#include <sys/ioctl.h>
|
|
#include <sys/select.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <linux/input.h>
|
|
#include <linux/kd.h>
|
|
#endif
|
|
|
|
#define PCSPKR_DIVIDER 4
|
|
#define CHIP_DIVIDER 1
|
|
|
|
const char* regCheatSheetPCSpeaker[]={
|
|
"Period", "0",
|
|
NULL
|
|
};
|
|
|
|
const char** DivPlatformPCSpeaker::getRegisterSheet() {
|
|
return regCheatSheetPCSpeaker;
|
|
}
|
|
|
|
const char* DivPlatformPCSpeaker::getEffectName(unsigned char effect) {
|
|
return NULL;
|
|
}
|
|
|
|
const float cut=0.05;
|
|
const float reso=0.06;
|
|
|
|
void DivPlatformPCSpeaker::acquire_unfilt(short* bufL, short* bufR, size_t start, size_t len) {
|
|
int out=0;
|
|
for (size_t i=start; i<start+len; i++) {
|
|
if (on) {
|
|
pos-=PCSPKR_DIVIDER;
|
|
if (pos>freq) pos=freq;
|
|
while (pos<0) {
|
|
if (freq<1) {
|
|
pos=1;
|
|
} else {
|
|
pos+=freq;
|
|
}
|
|
}
|
|
out=(pos>(freq>>1) && !isMuted[0])?32767:0;
|
|
bufL[i]=out;
|
|
oscBuf->data[oscBuf->needle++]=out;
|
|
} else {
|
|
bufL[i]=0;
|
|
oscBuf->data[oscBuf->needle++]=0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::acquire_cone(short* bufL, short* bufR, size_t start, size_t len) {
|
|
for (size_t i=start; i<start+len; i++) {
|
|
if (on) {
|
|
pos-=PCSPKR_DIVIDER;
|
|
if (pos>freq) pos=freq;
|
|
while (pos<0) {
|
|
if (freq<1) {
|
|
pos=1;
|
|
} else {
|
|
pos+=freq;
|
|
}
|
|
}
|
|
float next=(pos>((freq+16)>>1) && !isMuted[0])?1:0;
|
|
low+=0.04*band;
|
|
band+=0.04*(next-low-band);
|
|
float out=(low+band)*0.75;
|
|
if (out>1.0) out=1.0;
|
|
if (out<-1.0) out=-1.0;
|
|
bufL[i]=out*32767;
|
|
oscBuf->data[oscBuf->needle++]=out*32767;
|
|
} else {
|
|
bufL[i]=0;
|
|
oscBuf->data[oscBuf->needle++]=0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::acquire_piezo(short* bufL, short* bufR, size_t start, size_t len) {
|
|
for (size_t i=start; i<start+len; i++) {
|
|
if (on) {
|
|
pos-=PCSPKR_DIVIDER;
|
|
if (pos>freq) pos=freq;
|
|
while (pos<0) {
|
|
if (freq<1) {
|
|
pos=1;
|
|
} else {
|
|
pos+=freq;
|
|
}
|
|
}
|
|
float next=(pos>((freq+64)>>1) && !isMuted[0])?1:0;
|
|
low+=cut*band;
|
|
band+=cut*(next-low-(reso*band));
|
|
float out=band*0.15-(next-low)*0.06;
|
|
if (out>1.0) out=1.0;
|
|
if (out<-1.0) out=-1.0;
|
|
bufL[i]=out*32767;
|
|
oscBuf->data[oscBuf->needle++]=out*32767;
|
|
} else {
|
|
bufL[i]=0;
|
|
oscBuf->data[oscBuf->needle++]=0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::beepFreq(int freq) {
|
|
#ifdef __linux__
|
|
static struct input_event ie;
|
|
if (beepFD>=0) {
|
|
gettimeofday(&ie.time,NULL);
|
|
ie.type=EV_SND;
|
|
ie.code=SND_TONE;
|
|
if (freq>0) {
|
|
ie.value=chipClock/freq;
|
|
} else {
|
|
ie.value=0;
|
|
}
|
|
if (write(beepFD,&ie,sizeof(struct input_event))<0) {
|
|
perror("error while writing frequency!");
|
|
} else {
|
|
//printf("writing freq: %d\n",freq);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::acquire_real(short* bufL, short* bufR, size_t start, size_t len) {
|
|
int out=0;
|
|
if (lastOn!=on || lastFreq!=freq) {
|
|
lastOn=on;
|
|
lastFreq=freq;
|
|
beepFreq((on && !isMuted[0])?freq:0);
|
|
}
|
|
for (size_t i=start; i<start+len; i++) {
|
|
if (on) {
|
|
pos-=PCSPKR_DIVIDER;
|
|
if (pos>freq) pos=freq;
|
|
while (pos<0) {
|
|
if (freq<1) {
|
|
pos=1;
|
|
} else {
|
|
pos+=freq;
|
|
}
|
|
}
|
|
out=(pos>(freq>>1) && !isMuted[0])?32767:0;
|
|
oscBuf->data[oscBuf->needle++]=out;
|
|
} else {
|
|
oscBuf->data[oscBuf->needle++]=0;
|
|
}
|
|
bufL[i]=0;
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::acquire(short* bufL, short* bufR, size_t start, size_t len) {
|
|
switch (speakerType) {
|
|
case 0:
|
|
acquire_unfilt(bufL,bufR,start,len);
|
|
break;
|
|
case 1:
|
|
acquire_cone(bufL,bufR,start,len);
|
|
break;
|
|
case 2:
|
|
acquire_piezo(bufL,bufR,start,len);
|
|
break;
|
|
case 3:
|
|
acquire_real(bufL,bufR,start,len);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::tick(bool sysTick) {
|
|
for (int i=0; i<1; i++) {
|
|
chan[i].std.next();
|
|
if (chan[i].std.vol.had) {
|
|
chan[i].outVol=(chan[i].vol && chan[i].std.vol.val);
|
|
on=chan[i].outVol;
|
|
}
|
|
if (chan[i].std.arp.had) {
|
|
if (!chan[i].inPorta) {
|
|
if (chan[i].std.arp.mode) {
|
|
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp.val);
|
|
} else {
|
|
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp.val);
|
|
}
|
|
}
|
|
chan[i].freqChanged=true;
|
|
} else {
|
|
if (chan[i].std.arp.mode && chan[i].std.arp.finished) {
|
|
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
|
|
chan[i].freqChanged=true;
|
|
}
|
|
}
|
|
if (chan[i].std.pitch.had) {
|
|
if (chan[i].std.pitch.mode) {
|
|
chan[i].pitch2+=chan[i].std.pitch.val;
|
|
CLAMP_VAR(chan[i].pitch2,-2048,2048);
|
|
} else {
|
|
chan[i].pitch2=chan[i].std.pitch.val;
|
|
}
|
|
chan[i].freqChanged=true;
|
|
}
|
|
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
|
|
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2)-1;
|
|
if (chan[i].freq<0) chan[i].freq=0;
|
|
if (chan[i].freq>65535) chan[i].freq=65535;
|
|
if (chan[i].keyOn) {
|
|
on=true;
|
|
}
|
|
if (chan[i].keyOff) {
|
|
on=false;
|
|
}
|
|
freq=chan[i].freq;
|
|
if (chan[i].keyOn) chan[i].keyOn=false;
|
|
if (chan[i].keyOff) chan[i].keyOff=false;
|
|
chan[i].freqChanged=false;
|
|
}
|
|
}
|
|
}
|
|
|
|
int DivPlatformPCSpeaker::dispatch(DivCommand c) {
|
|
switch (c.cmd) {
|
|
case DIV_CMD_NOTE_ON:
|
|
if (c.value!=DIV_NOTE_NULL) {
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
}
|
|
chan[c.chan].active=true;
|
|
chan[c.chan].keyOn=true;
|
|
chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
|
|
break;
|
|
case DIV_CMD_NOTE_OFF:
|
|
chan[c.chan].active=false;
|
|
chan[c.chan].keyOff=true;
|
|
chan[c.chan].macroInit(NULL);
|
|
break;
|
|
case DIV_CMD_NOTE_OFF_ENV:
|
|
case DIV_CMD_ENV_RELEASE:
|
|
chan[c.chan].std.release();
|
|
break;
|
|
case DIV_CMD_INSTRUMENT:
|
|
if (chan[c.chan].ins!=c.value || c.value2==1) {
|
|
chan[c.chan].ins=c.value;
|
|
}
|
|
break;
|
|
case DIV_CMD_VOLUME:
|
|
if (chan[c.chan].vol!=c.value) {
|
|
chan[c.chan].vol=c.value;
|
|
if (!chan[c.chan].std.vol.has) {
|
|
chan[c.chan].outVol=c.value;
|
|
}
|
|
if (chan[c.chan].active) {
|
|
on=chan[c.chan].vol;
|
|
}
|
|
}
|
|
break;
|
|
case DIV_CMD_GET_VOLUME:
|
|
return chan[c.chan].vol;
|
|
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_PERIODIC(c.value2);
|
|
bool return2=false;
|
|
if (destFreq>chan[c.chan].baseFreq) {
|
|
chan[c.chan].baseFreq+=c.value;
|
|
if (chan[c.chan].baseFreq>=destFreq) {
|
|
chan[c.chan].baseFreq=destFreq;
|
|
return2=true;
|
|
}
|
|
} else {
|
|
chan[c.chan].baseFreq-=c.value;
|
|
if (chan[c.chan].baseFreq<=destFreq) {
|
|
chan[c.chan].baseFreq=destFreq;
|
|
return2=true;
|
|
}
|
|
}
|
|
chan[c.chan].freqChanged=true;
|
|
if (return2) {
|
|
chan[c.chan].inPorta=false;
|
|
return 2;
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_LEGATO:
|
|
if (c.chan==3) break;
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
break;
|
|
case DIV_CMD_PRE_PORTA:
|
|
if (chan[c.chan].active && c.value2) {
|
|
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
|
|
}
|
|
chan[c.chan].inPorta=c.value;
|
|
break;
|
|
case DIV_CMD_GET_VOLMAX:
|
|
return 1;
|
|
break;
|
|
case DIV_ALWAYS_SET_VOLUME:
|
|
return 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::muteChannel(int ch, bool mute) {
|
|
isMuted[ch]=mute;
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::forceIns() {
|
|
for (int i=0; i<1; i++) {
|
|
chan[i].insChanged=true;
|
|
}
|
|
}
|
|
|
|
void* DivPlatformPCSpeaker::getChanState(int ch) {
|
|
return &chan[ch];
|
|
}
|
|
|
|
DivDispatchOscBuffer* DivPlatformPCSpeaker::getOscBuffer(int ch) {
|
|
return oscBuf;
|
|
}
|
|
|
|
unsigned char* DivPlatformPCSpeaker::getRegisterPool() {
|
|
if (on) {
|
|
regPool[0]=freq;
|
|
regPool[1]=freq>>8;
|
|
} else {
|
|
regPool[0]=0;
|
|
regPool[1]=0;
|
|
}
|
|
return regPool;
|
|
}
|
|
|
|
int DivPlatformPCSpeaker::getRegisterPoolSize() {
|
|
return 2;
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::reset() {
|
|
for (int i=0; i<1; i++) {
|
|
chan[i]=DivPlatformPCSpeaker::Channel();
|
|
chan[i].std.setEngine(parent);
|
|
}
|
|
if (dumpWrites) {
|
|
addWrite(0xffffffff,0);
|
|
}
|
|
|
|
on=false;
|
|
lastOn=false;
|
|
freq=0;
|
|
lastFreq=0;
|
|
pos=0;
|
|
flip=false;
|
|
low=0;
|
|
band=0;
|
|
|
|
if (speakerType==3) {
|
|
#ifdef __linux__
|
|
if (beepFD==-1) {
|
|
beepFD=open("/dev/input/by-path/platform-pcspkr-event-spkr",O_WRONLY);
|
|
if (beepFD<0) {
|
|
perror("error while opening PC speaker");
|
|
}
|
|
}
|
|
#endif
|
|
beepFreq(0);
|
|
} else {
|
|
beepFreq(0);
|
|
}
|
|
|
|
memset(regPool,0,2);
|
|
}
|
|
|
|
bool DivPlatformPCSpeaker::keyOffAffectsArp(int ch) {
|
|
return true;
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::setFlags(unsigned int flags) {
|
|
chipClock=COLOR_NTSC/3.0;
|
|
rate=chipClock/PCSPKR_DIVIDER;
|
|
speakerType=flags&3;
|
|
oscBuf->rate=rate;
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::notifyInsDeletion(void* ins) {
|
|
for (int i=0; i<1; i++) {
|
|
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::notifyPlaybackStop() {
|
|
beepFreq(0);
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::poke(unsigned int addr, unsigned short val) {
|
|
// ???
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::poke(std::vector<DivRegWrite>& wlist) {
|
|
// ???
|
|
}
|
|
|
|
int DivPlatformPCSpeaker::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
beepFD=-1;
|
|
for (int i=0; i<1; i++) {
|
|
isMuted[i]=false;
|
|
}
|
|
oscBuf=new DivDispatchOscBuffer;
|
|
setFlags(flags);
|
|
|
|
reset();
|
|
return 5;
|
|
}
|
|
|
|
void DivPlatformPCSpeaker::quit() {
|
|
if (speakerType==3) {
|
|
beepFreq(0);
|
|
}
|
|
#ifdef __linux__
|
|
if (beepFD>=0) close(beepFD);
|
|
#endif
|
|
delete oscBuf;
|
|
}
|
|
|
|
DivPlatformPCSpeaker::~DivPlatformPCSpeaker() {
|
|
}
|