we see it
This commit is contained in:
tildearrow
parent
983ec75eb3
commit
7b2237ffac
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@ -384,6 +384,7 @@ src/engine/platform/pet.cpp
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src/engine/platform/vic20.cpp
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src/engine/platform/vrc6.cpp
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src/engine/platform/scc.cpp
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src/engine/platform/namcowsg.cpp
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src/engine/platform/dummy.cpp
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)
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@ -0,0 +1,432 @@
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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 "namcowsg.h"
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#include "../engine.h"
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#include <math.h>
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//#define rWrite(a,v) pendingWrites[a]=v;
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#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
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#define chWrite(c,a,v) \
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if (!skipRegisterWrites) { \
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if (curChan!=c) { \
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curChan=c; \
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rWrite(0,curChan); \
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} \
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regPool[16+((c)<<4)+((a)&0x0f)]=v; \
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rWrite(a,v); \
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}
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#define CHIP_DIVIDER 32
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const char* regCheatSheetNamcoWSG[]={
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"Select", "0",
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"MasterVol", "1",
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"FreqL", "2",
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"FreqH", "3",
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"DataCtl", "4",
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"ChanVol", "5",
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"WaveCtl", "6",
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"NoiseCtl", "7",
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"LFOFreq", "8",
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"LFOCtl", "9",
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NULL
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};
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const char** DivPlatformNamcoWSG::getRegisterSheet() {
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return regCheatSheetNamcoWSG;
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}
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const char* DivPlatformNamcoWSG::getEffectName(unsigned char effect) {
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switch (effect) {
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case 0x10:
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return "10xx: Change waveform";
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break;
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case 0x11:
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return "11xx: Toggle noise mode";
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break;
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}
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return NULL;
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}
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void DivPlatformNamcoWSG::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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short* buf[2]={
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bufL+start, bufR+start
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};
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while (!writes.empty()) {
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QueuedWrite w=writes.front();
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switch (devType) {
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case 1:
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((namco_device*)namco)->pacman_sound_w(w.addr,w.val);
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break;
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case 2:
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((namco_device*)namco)->polepos_sound_w(w.addr,w.val);
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break;
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case 15:
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((namco_15xx_device*)namco)->sharedram_w(w.addr,w.val);
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break;
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case 30:
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((namco_cus30_device*)namco)->namcos1_cus30_w(w.addr,w.val);
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break;
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}
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regPool[w.addr]=w.val;
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writes.pop();
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}
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namco->sound_stream_update(buf,len);
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}
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void DivPlatformNamcoWSG::updateWave(int ch) {
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chWrite(ch,0x04,0x5f);
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chWrite(ch,0x04,0x1f);
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for (int i=0; i<32; i++) {
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chWrite(ch,0x06,chan[ch].ws.output[i]);
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}
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if (chan[ch].active) {
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chWrite(ch,0x04,0x80|chan[ch].outVol);
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}
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}
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void DivPlatformNamcoWSG::tick(bool sysTick) {
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for (int i=0; i<chans; 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&15)*MIN(15,chan[i].std.vol.val))>>4;
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chWrite(i,0x04,0x80|chan[i].outVol);
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}
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if (chan[i].std.duty.had && i>=4) {
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chan[i].noise=chan[i].std.duty.val;
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chan[i].freqChanged=true;
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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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if (chan[i].std.arp.mode) {
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chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp.val);
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} else {
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chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp.val);
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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.arp.mode && chan[i].std.arp.finished) {
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chan[i].baseFreq=NOTE_PERIODIC(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.wave.had) {
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if (chan[i].wave!=chan[i].std.wave.val || chan[i].ws.activeChanged()) {
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chan[i].wave=chan[i].std.wave.val;
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chan[i].ws.changeWave1(chan[i].wave);
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if (!chan[i].keyOff) chan[i].keyOn=true;
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}
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}
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if (chan[i].std.panL.had) {
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chan[i].pan&=0x0f;
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chan[i].pan|=(chan[i].std.panL.val&15)<<4;
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}
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if (chan[i].std.panR.had) {
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chan[i].pan&=0xf0;
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chan[i].pan|=chan[i].std.panR.val&15;
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}
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if (chan[i].std.panL.had || chan[i].std.panR.had) {
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chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
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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,-2048,2048);
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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].active) {
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if (chan[i].ws.tick() || (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1)) {
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updateWave(i);
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}
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
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chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
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if (chan[i].freq>4095) chan[i].freq=4095;
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chWrite(i,0x02,chan[i].freq&0xff);
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chWrite(i,0x03,chan[i].freq>>8);
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if (chan[i].keyOn) {
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//rWrite(16+i*5,0x80);
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//chWrite(i,0x04,0x80|chan[i].vol);
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}
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if (chan[i].keyOff) {
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chWrite(i,0x04,0);
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}
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if (chan[i].keyOn) chan[i].keyOn=false;
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if (chan[i].keyOff) chan[i].keyOff=false;
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chan[i].freqChanged=false;
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}
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}
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}
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int DivPlatformNamcoWSG::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_PCE);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
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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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chWrite(c.chan,0x04,0x80|chan[c.chan].vol);
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chan[c.chan].macroInit(ins);
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if (chan[c.chan].wave<0) {
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chan[c.chan].wave=0;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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}
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chan[c.chan].ws.init(ins,32,15,chan[c.chan].insChanged);
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chan[c.chan].insChanged=false;
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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].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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chan[c.chan].insChanged=true;
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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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if (chan[c.chan].active) chWrite(c.chan,0x04,0x80|chan[c.chan].outVol);
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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_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_WAVE:
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chan[c.chan].wave=c.value;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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chan[c.chan].keyOn=true;
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break;
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case DIV_CMD_NOTE_PORTA: {
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int destFreq=NOTE_PERIODIC(c.value2);
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bool return2=false;
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if (destFreq>chan[c.chan].baseFreq) {
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chan[c.chan].baseFreq+=c.value;
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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;
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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_STD_NOISE_MODE:
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chan[c.chan].noise=c.value;
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chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|chan[c.chan].note):0);
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break;
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case DIV_CMD_PANNING: {
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chan[c.chan].pan=(c.value&0xf0)|(c.value2>>4);
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chWrite(c.chan,0x05,isMuted[c.chan]?0:chan[c.chan].pan);
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break;
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}
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case DIV_CMD_LEGATO:
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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)));
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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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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_PCE));
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}
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chan[c.chan].inPorta=c.value;
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break;
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case DIV_CMD_GET_VOLMAX:
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return 15;
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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 DivPlatformNamcoWSG::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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chWrite(ch,0x05,isMuted[ch]?0:chan[ch].pan);
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}
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void DivPlatformNamcoWSG::forceIns() {
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for (int i=0; i<chans; i++) {
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chan[i].insChanged=true;
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chan[i].freqChanged=true;
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updateWave(i);
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chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
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}
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}
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void* DivPlatformNamcoWSG::getChanState(int ch) {
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return &chan[ch];
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}
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DivDispatchOscBuffer* DivPlatformNamcoWSG::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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unsigned char* DivPlatformNamcoWSG::getRegisterPool() {
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return regPool;
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}
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int DivPlatformNamcoWSG::getRegisterPoolSize() {
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return 112;
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}
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void DivPlatformNamcoWSG::reset() {
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while (!writes.empty()) writes.pop();
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memset(regPool,0,128);
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for (int i=0; i<chans; i++) {
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chan[i]=DivPlatformNamcoWSG::Channel();
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chan[i].std.setEngine(parent);
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chan[i].ws.setEngine(parent);
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chan[i].ws.init(NULL,32,15,false);
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}
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if (dumpWrites) {
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addWrite(0xffffffff,0);
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}
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// TODO: wave memory
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namco->device_start(NULL);
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lastPan=0xff;
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cycles=0;
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curChan=-1;
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}
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bool DivPlatformNamcoWSG::isStereo() {
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return (devType==30);
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}
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bool DivPlatformNamcoWSG::keyOffAffectsArp(int ch) {
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return true;
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}
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void DivPlatformNamcoWSG::notifyWaveChange(int wave) {
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for (int i=0; i<chans; i++) {
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if (chan[i].wave==wave) {
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chan[i].ws.changeWave1(wave);
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updateWave(i);
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}
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}
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}
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void DivPlatformNamcoWSG::notifyInsDeletion(void* ins) {
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for (int i=0; i<chans; i++) {
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chan[i].std.notifyInsDeletion((DivInstrument*)ins);
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}
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}
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void DivPlatformNamcoWSG::setDeviceType(int type) {
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devType=type;
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switch (type) {
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case 15:
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case 30:
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chans=8;
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break;
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default:
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chans=3;
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break;
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}
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}
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void DivPlatformNamcoWSG::setFlags(unsigned int flags) {
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chipClock=3072000;
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rate=chipClock/16;
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namco->device_clock_changed(rate);
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for (int i=0; i<chans; i++) {
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oscBuf[i]->rate=rate;
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}
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}
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void DivPlatformNamcoWSG::poke(unsigned int addr, unsigned short val) {
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rWrite(addr,val);
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}
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void DivPlatformNamcoWSG::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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int DivPlatformNamcoWSG::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
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parent=p;
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dumpWrites=false;
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skipRegisterWrites=false;
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for (int i=0; i<chans; i++) {
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isMuted[i]=false;
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oscBuf[i]=new DivDispatchOscBuffer;
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}
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switch (devType) {
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case 15:
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namco=new namco_15xx_device(3072000);
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break;
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case 30:
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namco=new namco_cus30_device(3072000);
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break;
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default:
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namco=new namco_device(3072000);
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break;
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}
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setFlags(flags);
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reset();
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return 6;
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}
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void DivPlatformNamcoWSG::quit() {
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for (int i=0; i<chans; i++) {
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delete oscBuf[i];
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}
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delete namco;
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}
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DivPlatformNamcoWSG::~DivPlatformNamcoWSG() {
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}
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@ -0,0 +1,106 @@
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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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||||
*
|
||||
* 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 _NAMCOWSG_H
|
||||
#define _NAMCOWSG_H
|
||||
|
||||
#include "../dispatch.h"
|
||||
#include <queue>
|
||||
#include "../macroInt.h"
|
||||
#include "../waveSynth.h"
|
||||
#include "sound/namco.h"
|
||||
|
||||
class DivPlatformNamcoWSG: public DivDispatch {
|
||||
struct Channel {
|
||||
int freq, baseFreq, pitch, pitch2, note;
|
||||
int ins;
|
||||
unsigned char pan;
|
||||
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, noise;
|
||||
signed char vol, outVol, wave;
|
||||
DivMacroInt std;
|
||||
DivWaveSynth ws;
|
||||
void macroInit(DivInstrument* which) {
|
||||
std.init(which);
|
||||
pitch2=0;
|
||||
}
|
||||
Channel():
|
||||
freq(0),
|
||||
baseFreq(0),
|
||||
pitch(0),
|
||||
pitch2(0),
|
||||
note(0),
|
||||
ins(-1),
|
||||
pan(255),
|
||||
active(false),
|
||||
insChanged(true),
|
||||
freqChanged(false),
|
||||
keyOn(false),
|
||||
keyOff(false),
|
||||
inPorta(false),
|
||||
noise(false),
|
||||
vol(31),
|
||||
outVol(31),
|
||||
wave(-1) {}
|
||||
};
|
||||
Channel chan[8];
|
||||
DivDispatchOscBuffer* oscBuf[8];
|
||||
bool isMuted[8];
|
||||
struct QueuedWrite {
|
||||
unsigned char addr;
|
||||
unsigned char val;
|
||||
QueuedWrite(unsigned char a, unsigned char v): addr(a), val(v) {}
|
||||
};
|
||||
std::queue<QueuedWrite> writes;
|
||||
unsigned char lastPan;
|
||||
|
||||
int cycles, curChan, delay;
|
||||
int tempL[32];
|
||||
int tempR[32];
|
||||
namco_audio_device* namco;
|
||||
int devType, chans;
|
||||
unsigned char regPool[512];
|
||||
void updateWave(int ch);
|
||||
friend void putDispatchChan(void*,int,int);
|
||||
public:
|
||||
void acquire(short* bufL, short* bufR, size_t start, size_t len);
|
||||
int dispatch(DivCommand c);
|
||||
void* getChanState(int chan);
|
||||
DivDispatchOscBuffer* getOscBuffer(int chan);
|
||||
unsigned char* getRegisterPool();
|
||||
int getRegisterPoolSize();
|
||||
void reset();
|
||||
void forceIns();
|
||||
void tick(bool sysTick=true);
|
||||
void muteChannel(int ch, bool mute);
|
||||
bool isStereo();
|
||||
bool keyOffAffectsArp(int ch);
|
||||
void setDeviceType(int type);
|
||||
void setFlags(unsigned int flags);
|
||||
void notifyWaveChange(int wave);
|
||||
void notifyInsDeletion(void* ins);
|
||||
void poke(unsigned int addr, unsigned short val);
|
||||
void poke(std::vector<DivRegWrite>& wlist);
|
||||
const char** getRegisterSheet();
|
||||
const char* getEffectName(unsigned char effect);
|
||||
int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
|
||||
void quit();
|
||||
~DivPlatformNamcoWSG();
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
@ -80,11 +80,13 @@ namco_cus30_device::namco_cus30_device(uint32_t clock)
|
|||
// device_start - device-specific startup
|
||||
//-------------------------------------------------
|
||||
|
||||
void namco_audio_device::device_start()
|
||||
void namco_audio_device::device_start(unsigned char* wavePtr)
|
||||
{
|
||||
/* extract globals from the interface */
|
||||
m_last_channel = m_channel_list + m_voices;
|
||||
|
||||
m_wave_ptr = wavePtr;
|
||||
|
||||
/* build the waveform table */
|
||||
build_decoded_waveform(m_wave_ptr);
|
||||
|
||||
|
|
@ -106,34 +108,19 @@ void namco_audio_device::device_start()
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
void namco_device::device_start()
|
||||
void namco_audio_device::device_clock_changed(int clk)
|
||||
{
|
||||
namco_audio_device::device_start();
|
||||
int clock_multiple;
|
||||
|
||||
}
|
||||
|
||||
|
||||
void namco_15xx_device::device_start()
|
||||
{
|
||||
namco_audio_device::device_start();
|
||||
}
|
||||
|
||||
|
||||
void namco_audio_device::device_clock_changed()
|
||||
{
|
||||
//int clock_multiple;
|
||||
|
||||
/*
|
||||
// adjust internal clock
|
||||
m_namco_clock = clock();
|
||||
m_namco_clock = clk;
|
||||
for (clock_multiple = 0; m_namco_clock < INTERNAL_RATE; clock_multiple++)
|
||||
m_namco_clock *= 2;
|
||||
|
||||
m_f_fracbits = clock_multiple + 15;
|
||||
|
||||
// adjust output clock
|
||||
m_sample_rate = m_namco_clock;*/
|
||||
m_sample_rate = m_namco_clock;
|
||||
|
||||
//logerror("Namco: freq fractional bits = %d: internal freq = %d, output freq = %d\n", m_f_fracbits, m_namco_clock, m_sample_rate);
|
||||
}
|
||||
|
|
@ -791,18 +778,3 @@ void namco_audio_device::sound_stream_update(short** outputs, int len)
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
void namco_device::sound_stream_update(short** outputs, int len)
|
||||
{
|
||||
namco_audio_device::sound_stream_update(outputs,len);
|
||||
}
|
||||
|
||||
void namco_15xx_device::sound_stream_update(short** outputs, int len)
|
||||
{
|
||||
namco_audio_device::sound_stream_update(outputs,len);
|
||||
}
|
||||
|
||||
void namco_cus30_device::sound_stream_update(short** outputs, int len)
|
||||
{
|
||||
namco_audio_device::sound_stream_update(outputs,len);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -15,7 +15,6 @@ public:
|
|||
|
||||
void sound_enable_w(int state);
|
||||
|
||||
protected:
|
||||
static constexpr unsigned MAX_VOICES = 8;
|
||||
static constexpr unsigned MAX_VOLUME = 16;
|
||||
|
||||
|
|
@ -36,8 +35,8 @@ protected:
|
|||
namco_audio_device(uint32_t clock);
|
||||
|
||||
// device-level overrides
|
||||
void device_start();
|
||||
void device_clock_changed();
|
||||
void device_start(unsigned char* wavePtr);
|
||||
void device_clock_changed(int clk);
|
||||
|
||||
// internal state
|
||||
|
||||
|
|
@ -69,6 +68,7 @@ protected:
|
|||
int16_t m_waveform[MAX_VOLUME][512];
|
||||
|
||||
virtual void sound_stream_update(short** outputs, int len);
|
||||
virtual ~namco_audio_device() {}
|
||||
};
|
||||
|
||||
class namco_device : public namco_audio_device
|
||||
|
|
@ -81,11 +81,7 @@ public:
|
|||
uint8_t polepos_sound_r(int offset);
|
||||
void polepos_sound_w(int offset, uint8_t data);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start();
|
||||
|
||||
virtual void sound_stream_update(short** outputs, int len);
|
||||
~namco_device() {}
|
||||
|
||||
private:
|
||||
uint8_t m_soundregs[0x400];
|
||||
|
|
@ -101,11 +97,7 @@ public:
|
|||
uint8_t sharedram_r(int offset);
|
||||
void sharedram_w(int offset, uint8_t data);
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start();
|
||||
|
||||
virtual void sound_stream_update(short** outputs, int len);
|
||||
~namco_15xx_device() {}
|
||||
|
||||
private:
|
||||
uint8_t m_soundregs[0x400];
|
||||
|
|
@ -123,8 +115,7 @@ public:
|
|||
|
||||
void pacman_sound_w(int offset, uint8_t data);
|
||||
|
||||
protected:
|
||||
virtual void sound_stream_update(short** outputs, int len);
|
||||
~namco_cus30_device() {}
|
||||
};
|
||||
|
||||
#endif // MAME_SOUND_NAMCO_H
|
||||
|
|
|
|||
|
|
@ -0,0 +1,326 @@
|
|||
// license:BSD-3-Clause
|
||||
// copyright-holders:Barry Rodewald
|
||||
/**********************************************************************************************
|
||||
*
|
||||
* OKI MSM6258 ADPCM
|
||||
*
|
||||
* TODO:
|
||||
* 3-bit ADPCM support
|
||||
* Recording?
|
||||
*
|
||||
**********************************************************************************************/
|
||||
|
||||
|
||||
#include "emu.h"
|
||||
#include "okim6258.h"
|
||||
|
||||
#define COMMAND_STOP (1 << 0)
|
||||
#define COMMAND_PLAY (1 << 1)
|
||||
#define COMMAND_RECORD (1 << 2)
|
||||
|
||||
#define STATUS_PLAYING (1 << 1)
|
||||
#define STATUS_RECORDING (1 << 2)
|
||||
|
||||
static const int dividers[4] = { 1024, 768, 512, 512 };
|
||||
|
||||
/* step size index shift table */
|
||||
static const int index_shift[8] = { -1, -1, -1, -1, 2, 4, 6, 8 };
|
||||
|
||||
/* lookup table for the precomputed difference */
|
||||
static int diff_lookup[49*16];
|
||||
|
||||
/* tables computed? */
|
||||
static int tables_computed = 0;
|
||||
|
||||
|
||||
|
||||
// device type definition
|
||||
DEFINE_DEVICE_TYPE(OKIM6258, okim6258_device, "okim6258", "OKI MSM6258 ADPCM")
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// LIVE DEVICE
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// okim6258_device - constructor
|
||||
//-------------------------------------------------
|
||||
|
||||
okim6258_device::okim6258_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
|
||||
: device_t(mconfig, OKIM6258, tag, owner, clock),
|
||||
device_sound_interface(mconfig, *this),
|
||||
m_status(0),
|
||||
m_start_divider(0),
|
||||
m_divider(512),
|
||||
m_adpcm_type(0),
|
||||
m_data_in(0),
|
||||
m_nibble_shift(0),
|
||||
m_stream(nullptr),
|
||||
m_output_bits(0),
|
||||
m_signal(0),
|
||||
m_step(0)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
compute_tables -- compute the difference tables
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
static void compute_tables()
|
||||
{
|
||||
/* nibble to bit map */
|
||||
static const int nbl2bit[16][4] =
|
||||
{
|
||||
{ 1, 0, 0, 0}, { 1, 0, 0, 1}, { 1, 0, 1, 0}, { 1, 0, 1, 1},
|
||||
{ 1, 1, 0, 0}, { 1, 1, 0, 1}, { 1, 1, 1, 0}, { 1, 1, 1, 1},
|
||||
{-1, 0, 0, 0}, {-1, 0, 0, 1}, {-1, 0, 1, 0}, {-1, 0, 1, 1},
|
||||
{-1, 1, 0, 0}, {-1, 1, 0, 1}, {-1, 1, 1, 0}, {-1, 1, 1, 1}
|
||||
};
|
||||
|
||||
int step, nib;
|
||||
|
||||
/* loop over all possible steps */
|
||||
for (step = 0; step <= 48; step++)
|
||||
{
|
||||
/* compute the step value */
|
||||
int stepval = floor(16.0 * pow(11.0 / 10.0, (double)step));
|
||||
|
||||
/* loop over all nibbles and compute the difference */
|
||||
for (nib = 0; nib < 16; nib++)
|
||||
{
|
||||
diff_lookup[step*16 + nib] = nbl2bit[nib][0] *
|
||||
(stepval * nbl2bit[nib][1] +
|
||||
stepval/2 * nbl2bit[nib][2] +
|
||||
stepval/4 * nbl2bit[nib][3] +
|
||||
stepval/8);
|
||||
}
|
||||
}
|
||||
|
||||
tables_computed = 1;
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_start - device-specific startup
|
||||
//-------------------------------------------------
|
||||
|
||||
void okim6258_device::device_start()
|
||||
{
|
||||
compute_tables();
|
||||
|
||||
m_divider = dividers[m_start_divider];
|
||||
|
||||
m_stream = stream_alloc(0, 1, clock()/m_divider);
|
||||
|
||||
m_signal = -2;
|
||||
m_step = 0;
|
||||
|
||||
state_save_register();
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_reset - device-specific reset
|
||||
//-------------------------------------------------
|
||||
|
||||
void okim6258_device::device_reset()
|
||||
{
|
||||
m_stream->update();
|
||||
|
||||
m_signal = -2;
|
||||
m_step = 0;
|
||||
m_status = 0;
|
||||
}
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// sound_stream_update - handle a stream update
|
||||
//-------------------------------------------------
|
||||
|
||||
void okim6258_device::sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs)
|
||||
{
|
||||
auto &buffer = outputs[0];
|
||||
|
||||
if (m_status & STATUS_PLAYING)
|
||||
{
|
||||
int nibble_shift = m_nibble_shift;
|
||||
|
||||
for (int sampindex = 0; sampindex < buffer.samples(); sampindex++)
|
||||
{
|
||||
/* Compute the new amplitude and update the current step */
|
||||
int nibble = (m_data_in >> nibble_shift) & 0xf;
|
||||
|
||||
/* Output to the buffer */
|
||||
int16_t sample = clock_adpcm(nibble);
|
||||
|
||||
nibble_shift ^= 4;
|
||||
|
||||
buffer.put_int(sampindex, sample, 32768);
|
||||
}
|
||||
|
||||
/* Update the parameters */
|
||||
m_nibble_shift = nibble_shift;
|
||||
}
|
||||
else
|
||||
{
|
||||
buffer.fill(0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
state save support for MAME
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
void okim6258_device::state_save_register()
|
||||
{
|
||||
save_item(NAME(m_status));
|
||||
save_item(NAME(m_divider));
|
||||
save_item(NAME(m_data_in));
|
||||
save_item(NAME(m_nibble_shift));
|
||||
save_item(NAME(m_signal));
|
||||
save_item(NAME(m_step));
|
||||
}
|
||||
|
||||
|
||||
int16_t okim6258_device::clock_adpcm(uint8_t nibble)
|
||||
{
|
||||
int32_t max = (1 << (m_output_bits - 1)) - 1;
|
||||
int32_t min = -(1 << (m_output_bits - 1));
|
||||
|
||||
m_signal += diff_lookup[m_step * 16 + (nibble & 15)];
|
||||
|
||||
/* clamp to the maximum */
|
||||
if (m_signal > max)
|
||||
m_signal = max;
|
||||
else if (m_signal < min)
|
||||
m_signal = min;
|
||||
|
||||
/* adjust the step size and clamp */
|
||||
m_step += index_shift[nibble & 7];
|
||||
if (m_step > 48)
|
||||
m_step = 48;
|
||||
else if (m_step < 0)
|
||||
m_step = 0;
|
||||
|
||||
/* return the signal scaled up to 32767 */
|
||||
return m_signal << 4;
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
okim6258::set_divider -- set the master clock divider
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
void okim6258_device::set_divider(int val)
|
||||
{
|
||||
m_divider = dividers[val];
|
||||
notify_clock_changed();
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
okim6258::set_clock -- set the master clock
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
void okim6258_device::device_clock_changed()
|
||||
{
|
||||
m_stream->set_sample_rate(clock() / m_divider);
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
okim6258::get_vclk -- get the VCLK/sampling frequency
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
int okim6258_device::get_vclk()
|
||||
{
|
||||
return (clock() / m_divider);
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
okim6258_status_r -- read the status port of an OKIM6258-compatible chip
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
uint8_t okim6258_device::status_r()
|
||||
{
|
||||
m_stream->update();
|
||||
|
||||
return (m_status & STATUS_PLAYING) ? 0x00 : 0x80;
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
okim6258_data_w -- write to the control port of an OKIM6258-compatible chip
|
||||
|
||||
***********************************************************************************************/
|
||||
void okim6258_device::data_w(uint8_t data)
|
||||
{
|
||||
/* update the stream */
|
||||
m_stream->update();
|
||||
|
||||
m_data_in = data;
|
||||
m_nibble_shift = 0;
|
||||
}
|
||||
|
||||
|
||||
/**********************************************************************************************
|
||||
|
||||
okim6258_ctrl_w -- write to the control port of an OKIM6258-compatible chip
|
||||
|
||||
***********************************************************************************************/
|
||||
|
||||
void okim6258_device::ctrl_w(uint8_t data)
|
||||
{
|
||||
m_stream->update();
|
||||
|
||||
if (data & COMMAND_STOP)
|
||||
{
|
||||
m_status &= ~(STATUS_PLAYING | STATUS_RECORDING);
|
||||
return;
|
||||
}
|
||||
|
||||
if (data & COMMAND_PLAY)
|
||||
{
|
||||
if (!(m_status & STATUS_PLAYING))
|
||||
{
|
||||
m_status |= STATUS_PLAYING;
|
||||
|
||||
/* Also reset the ADPCM parameters */
|
||||
m_signal = -2;
|
||||
m_step = 0;
|
||||
m_nibble_shift = 0;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
m_status &= ~STATUS_PLAYING;
|
||||
}
|
||||
|
||||
if (data & COMMAND_RECORD)
|
||||
{
|
||||
logerror("M6258: Record enabled\n");
|
||||
m_status |= STATUS_RECORDING;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_status &= ~STATUS_RECORDING;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
// license:BSD-3-Clause
|
||||
// copyright-holders:Barry Rodewald
|
||||
#ifndef MAME_SOUND_OKIM6258_H
|
||||
#define MAME_SOUND_OKIM6258_H
|
||||
|
||||
#pragma once
|
||||
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
// ======================> okim6258_device
|
||||
|
||||
class okim6258_device : public device_t,
|
||||
public device_sound_interface
|
||||
{
|
||||
public:
|
||||
static constexpr int FOSC_DIV_BY_1024 = 0;
|
||||
static constexpr int FOSC_DIV_BY_768 = 1;
|
||||
static constexpr int FOSC_DIV_BY_512 = 2;
|
||||
|
||||
static constexpr int TYPE_3BITS = 0;
|
||||
static constexpr int TYPE_4BITS = 1;
|
||||
|
||||
static constexpr int OUTPUT_10BITS = 10;
|
||||
static constexpr int OUTPUT_12BITS = 12;
|
||||
|
||||
okim6258_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
// configuration
|
||||
void set_start_div(int div) { m_start_divider = div; }
|
||||
void set_type(int type) { m_adpcm_type = type; }
|
||||
void set_outbits(int outbit) { m_output_bits = outbit; }
|
||||
|
||||
uint8_t status_r();
|
||||
void data_w(uint8_t data);
|
||||
void ctrl_w(uint8_t data);
|
||||
|
||||
void set_divider(int val);
|
||||
int get_vclk();
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
virtual void device_clock_changed() override;
|
||||
|
||||
// sound stream update overrides
|
||||
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
|
||||
|
||||
private:
|
||||
void state_save_register();
|
||||
int16_t clock_adpcm(uint8_t nibble);
|
||||
|
||||
uint8_t m_status;
|
||||
|
||||
uint32_t m_start_divider;
|
||||
uint32_t m_divider; /* master clock divider */
|
||||
uint8_t m_adpcm_type; /* 3/4 bit ADPCM select */
|
||||
uint8_t m_data_in; /* ADPCM data-in register */
|
||||
uint8_t m_nibble_shift; /* nibble select */
|
||||
sound_stream *m_stream; /* which stream are we playing on? */
|
||||
|
||||
uint8_t m_output_bits; /* D/A precision is 10-bits but 12-bit data can be
|
||||
output serially to an external DAC */
|
||||
|
||||
int32_t m_signal;
|
||||
int32_t m_step;
|
||||
};
|
||||
|
||||
DECLARE_DEVICE_TYPE(OKIM6258, okim6258_device)
|
||||
|
||||
#endif // MAME_SOUND_OKIM6258_H
|
||||
Loading…
Reference in New Issue