furnace/src/engine/platform/saa.h
tildearrow c0e9b48b5b per-channel oscilloscope, part 5
SAA1099 (SAASound and MAME), Lynx, MMC5, N163, PC Engine, PC Speaker,
PET, QSound, WonderSwan, VERA, VIC-20, VRC6 and X1-010!
2022-05-01 02:40:03 -05:00

114 lines
3.7 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.
*/
#ifndef _SAA_H
#define _SAA_H
#include "../dispatch.h"
#include "../macroInt.h"
#include <queue>
#include "sound/saa1099.h"
#include "../../../extern/SAASound/src/SAASound.h"
enum DivSAACores {
DIV_SAA_CORE_MAME=0,
DIV_SAA_CORE_SAASOUND,
DIV_SAA_CORE_E
};
class DivPlatformSAA1099: public DivDispatch {
protected:
struct Channel {
unsigned char freqH, freqL;
int freq, baseFreq, pitch, pitch2, note, ins;
unsigned char psgMode;
signed char konCycles;
bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, inPorta;
int vol, outVol;
unsigned char pan;
DivMacroInt std;
void macroInit(DivInstrument* which) {
std.init(which);
pitch2=0;
}
Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), pitch2(0), note(0), ins(-1), psgMode(1), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), portaPause(false), inPorta(false), vol(0), outVol(15), pan(255) {}
};
Channel chan[6];
DivDispatchOscBuffer* oscBuf[6];
bool isMuted[6];
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;
DivSAACores core;
saa1099_device saa;
CSAASound* saa_saaSound;
unsigned char regPool[32];
unsigned char lastBusy;
bool dacMode;
int dacPeriod;
int dacRate;
int dacPos;
int dacSample;
unsigned char sampleBank;
int delay;
bool extMode;
short oldWrites[16];
short pendingWrites[16];
short* saaBuf[2];
size_t saaBufLen;
unsigned char saaEnv[2];
unsigned char saaNoise[2];
friend void putDispatchChan(void*,int,int);
void acquire_e(short* bufL, short* bufR, size_t start, size_t len);
void acquire_saaSound(short* bufL, short* bufR, size_t start, size_t len);
void acquire_mame(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);
DivDispatchOscBuffer* getOscBuffer(int chan);
unsigned char* getRegisterPool();
int getRegisterPoolSize();
void reset();
void forceIns();
void tick(bool sysTick=true);
void muteChannel(int ch, bool mute);
void setCore(DivSAACores core);
void setFlags(unsigned int flags);
bool isStereo();
int getPortaFloor(int ch);
bool keyOffAffectsArp(int ch);
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();
};
#endif