328 lines
9.9 KiB
C++
328 lines
9.9 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2023 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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#ifndef _ES5506_H
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#define _ES5506_H
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#include "../dispatch.h"
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#include "../engine.h"
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#include "../fixedQueue.h"
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#include "../macroInt.h"
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#include "../sample.h"
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#include "vgsound_emu/src/es550x/es5506.hpp"
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class DivPlatformES5506: public DivDispatch, public es550x_intf {
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struct Channel : public SharedChannel<int> {
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struct PCM {
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bool isNoteMap;
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int index, next;
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int note;
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double freqOffs;
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double nextFreqOffs;
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bool pause, direction;
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unsigned int bank;
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unsigned int start;
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unsigned int end;
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unsigned int length;
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unsigned int loopStart;
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unsigned int loopEnd;
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unsigned int nextPos;
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bool setPos;
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DivSampleLoopMode loopMode;
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PCM():
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isNoteMap(false),
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index(-1),
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next(-1),
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note(0),
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freqOffs(1.0),
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nextFreqOffs(1.0),
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pause(false),
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direction(false),
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bank(0),
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start(0),
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end(0),
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length(0),
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loopStart(0),
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loopEnd(0),
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nextPos(0),
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setPos(false),
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loopMode(DIV_SAMPLE_LOOP_MAX) {}
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} pcm;
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int nextFreq, nextNote, currNote, wave;
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int volMacroMax, panMacroMax;
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bool useWave, isReverseLoop;
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unsigned int cr;
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struct NoteChanged { // Note changed flags
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union { // pack flag bits in single byte
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struct { // flag bits
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unsigned char offs: 1; // frequency offset
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unsigned char note: 1; // note
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unsigned char freq: 1; // base frequency
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unsigned char dummy: 5; // dummy for bit padding
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};
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unsigned char changed; // Packed flags are stored here
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};
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NoteChanged() :
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changed(0) {}
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} noteChanged;
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struct VolChanged { // Volume changed flags
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union { // pack flag bits in single byte
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struct { // flag bits
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unsigned char lVol: 1; // left volume
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unsigned char rVol: 1; // right volume
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unsigned char ca: 1; // Channel assignment
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unsigned char dummy: 5; // dummy for bit padding
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};
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unsigned char changed; // Packed flags are stored here
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};
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VolChanged() :
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changed(0) {}
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} volChanged;
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struct FilterChanged { // Filter changed flags
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union { // pack flag bits in single byte
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struct { // flag bits
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unsigned char mode: 1; // Filter mode
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unsigned char k1: 1; // K1
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unsigned char k2: 1; // K2
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unsigned char dummy: 5; // dummy for bit padding
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};
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unsigned char changed; // Packed flags are stored here
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};
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FilterChanged():
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changed(0) {}
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} filterChanged;
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struct EnvChanged { // Envelope changed flags
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union { // pack flag bits in single byte
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struct { // flag bits
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unsigned char ecount: 1; // Envelope count
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unsigned char lVRamp: 1; // Left volume Ramp
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unsigned char rVRamp: 1; // Right volume Ramp
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unsigned char k1Ramp: 1; // K1 Ramp w/Slow flag
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unsigned char k2Ramp: 1; // K2 Ramp w/Slow flag
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unsigned char dummy: 3; // dummy for bit padding
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};
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unsigned char changed; // Packed flags are stored here
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};
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EnvChanged():
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changed(0) {}
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} envChanged;
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struct PCMChanged {
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union {
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struct {
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unsigned char index: 1; // sample index
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unsigned char slice: 1; // transwave slice
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unsigned char position: 1; // sample position in memory
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unsigned char loopBank: 1; // Loop mode and Bank
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unsigned char dummy: 4; // dummy for bit padding
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};
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unsigned char changed;
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};
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PCMChanged():
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changed(0) {}
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} pcmChanged;
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struct Overwrite {
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DivInstrumentES5506::Filter filter;
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DivInstrumentES5506::Envelope envelope;
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struct State {
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// overwrited flag
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union {
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struct {
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unsigned char mode: 1; // filter mode
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unsigned char k1: 1; // k1
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unsigned char k2: 1; // k2
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unsigned char ecount: 1; // envelope count
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unsigned char lVRamp: 1; // left volume ramp
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unsigned char rVRamp: 1; // right volume ramp
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unsigned char k1Ramp: 1; // k1 ramp
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unsigned char k2Ramp: 1; // k2 ramp
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};
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unsigned char overwrited;
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};
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State():
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overwrited(0) {}
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} state;
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Overwrite():
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filter(DivInstrumentES5506::Filter()),
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envelope(DivInstrumentES5506::Envelope()),
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state(State()) {}
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} overwrite;
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unsigned char ca;
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signed int k1Offs, k2Offs;
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signed int k1Slide, k2Slide;
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signed int k1Prev, k2Prev;
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int lVol, rVol;
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int outLVol, outRVol;
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int resLVol, resRVol;
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signed int oscOut;
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DivInstrumentES5506::Filter filter;
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DivInstrumentES5506::Envelope envelope;
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Channel():
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SharedChannel<int>(0xff),
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pcm(PCM()),
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nextFreq(0),
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nextNote(0),
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currNote(0),
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wave(-1),
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volMacroMax(0xfff),
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panMacroMax(0xfff),
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useWave(false),
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isReverseLoop(false),
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cr(0),
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noteChanged(NoteChanged()),
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volChanged(VolChanged()),
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filterChanged(FilterChanged()),
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envChanged(EnvChanged()),
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pcmChanged(PCMChanged()),
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overwrite(Overwrite()),
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ca(0),
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k1Offs(0),
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k2Offs(0),
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k1Slide(0),
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k2Slide(0),
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k1Prev(0xffff),
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k2Prev(0xffff),
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lVol(0xff),
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rVol(0xff),
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outLVol(0xfff),
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outRVol(0xfff),
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resLVol(0xfff),
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resRVol(0xfff),
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oscOut(0),
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filter(DivInstrumentES5506::Filter()),
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envelope(DivInstrumentES5506::Envelope()) {
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outVol=0xfff;
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}
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};
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Channel chan[32];
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DivDispatchOscBuffer* oscBuf[32];
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bool isMuted[32];
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signed short* sampleMem; // ES5506 uses 16 bit data bus for samples
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size_t sampleMemLen;
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unsigned int sampleOffES5506[256];
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bool sampleLoaded[256];
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struct QueuedHostIntf {
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unsigned char state;
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unsigned char step;
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unsigned char addr;
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unsigned int val;
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unsigned int mask;
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unsigned int* read;
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unsigned short delay;
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bool isRead;
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QueuedHostIntf():
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state(0),
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step(0),
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addr(0),
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val(0),
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mask(0),
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read(NULL),
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delay(0),
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isRead(false) {}
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QueuedHostIntf(unsigned char s, unsigned char a, unsigned int v, unsigned int m=(unsigned int)(~0), unsigned short d=0):
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state(0),
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step(s),
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addr(a),
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val(v),
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mask(m),
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read(NULL),
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delay(0),
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isRead(false) {}
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QueuedHostIntf(unsigned char st, unsigned char s, unsigned char a, unsigned int* r, unsigned int m=(unsigned int)(~0), unsigned short d=0):
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state(st),
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step(s),
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addr(a),
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val(0),
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mask(m),
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read(r),
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delay(d),
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isRead(true) {}
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};
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FixedQueue<QueuedHostIntf,2048> hostIntf32;
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FixedQueue<QueuedHostIntf,2048> hostIntf8;
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int cycle, curPage, volScale;
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unsigned char maskedVal;
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unsigned int irqv;
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bool isMasked, isReaded;
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bool irqTrigger;
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unsigned int curCR;
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unsigned char initChanMax, chanMax;
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es5506_core es5506;
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unsigned char regPool[4*16*128]; // 7 bit page x 16 registers per page x 32 bit per registers
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friend void putDispatchChip(void*,int);
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friend void putDispatchChan(void*,int,int);
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public:
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virtual void e_pin(bool state) override; // E output
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virtual void irqb(bool state) override; // IRQB output
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virtual s16 read_sample(u8 bank, u32 address) override {
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if (sampleMem==NULL) return 0;
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return sampleMem[((bank&3)<<21)|(address&0x1fffff)];
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}
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virtual void acquire(short** buf, size_t len) override;
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virtual int dispatch(DivCommand c) override;
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virtual void* getChanState(int chan) override;
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virtual DivMacroInt* getChanMacroInt(int ch) override;
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virtual DivDispatchOscBuffer* getOscBuffer(int chan) override;
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virtual unsigned char* getRegisterPool() override;
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virtual int getRegisterPoolSize() override;
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virtual void reset() override;
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virtual void forceIns() override;
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virtual void tick(bool sysTick=true) override;
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virtual void muteChannel(int ch, bool mute) override;
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virtual int getOutputCount() override;
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virtual bool keyOffAffectsArp(int ch) override;
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virtual void setFlags(const DivConfig& flags) override;
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virtual void notifyInsChange(int ins) override;
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virtual void notifyWaveChange(int wave) override;
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virtual void notifyInsDeletion(void* ins) override;
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virtual void poke(unsigned int addr, unsigned short val) override;
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virtual void poke(std::vector<DivRegWrite>& wlist) override;
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virtual const void* getSampleMem(int index = 0) override;
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virtual size_t getSampleMemCapacity(int index = 0) override;
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virtual size_t getSampleMemUsage(int index = 0) override;
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virtual bool isSampleLoaded(int index, int sample) override;
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virtual void renderSamples(int sysID) override;
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virtual const char** getRegisterSheet() override;
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virtual int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags) override;
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virtual void quit() override;
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DivPlatformES5506():
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DivDispatch(),
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es550x_intf(),
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es5506(*this) {}
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};
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#endif
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