91 lines
2.5 KiB
C++
91 lines
2.5 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 _ZSM_H
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#define _ZSM_H
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//#include "engine.h"
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#include "safeWriter.h"
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#include "dispatch.h"
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#include <stdlib.h>
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#define ZSM_HEADER_SIZE 16
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#define ZSM_VERSION 1
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#define ZSM_YM_CMD 0x40
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#define ZSM_DELAY_CMD 0x80
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#define ZSM_YM_MAX_WRITES 63
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#define ZSM_SYNC_MAX_WRITES 31
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#define ZSM_DELAY_MAX 127
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#define ZSM_EOF ZSM_DELAY_CMD
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#define ZSM_EXT ZSM_YM_CMD
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#define ZSM_EXT_PCM 0x00
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#define ZSM_EXT_CHIP 0x40
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#define ZSM_EXT_SYNC 0x80
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#define ZSM_EXT_CUSTOM 0xC0
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enum YM_STATE { ym_PREV, ym_NEW, ym_STATES };
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enum PSG_STATE { psg_PREV, psg_NEW, psg_STATES };
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class DivZSM {
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private:
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struct S_pcmInst {
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int geometry;
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unsigned int offset, length, loopPoint;
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bool isLooped;
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};
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SafeWriter* w;
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int ymState[ym_STATES][256];
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int psgState[psg_STATES][64];
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int pcmRateCache;
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int pcmCtrlRVCache;
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int pcmCtrlDCCache;
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unsigned int pcmLoopPointCache;
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bool pcmIsLooped;
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std::vector<DivRegWrite> ymwrites;
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std::vector<DivRegWrite> pcmMeta;
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std::vector<unsigned char> pcmData;
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std::vector<unsigned char> pcmCache;
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std::vector<S_pcmInst> pcmInsts;
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std::vector<DivRegWrite> syncCache;
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int loopOffset;
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int numWrites;
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int ticks;
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int tickRate;
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int ymMask;
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int psgMask;
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public:
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DivZSM();
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~DivZSM();
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void init(unsigned int rate = 60);
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int getoffset();
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void writeYM(unsigned char a, unsigned char v);
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void writePSG(unsigned char a, unsigned char v);
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void writePCM(unsigned char a, unsigned char v);
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void writeSync(unsigned char a, unsigned char v);
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void tick(int numticks = 1);
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void setLoopPoint();
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SafeWriter* finish();
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private:
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void flushWrites();
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void flushTicks();
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};
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#endif
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