103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2024 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 _CMD_STREAM_H
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#define _CMD_STREAM_H
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#include "defines.h"
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#include "safeReader.h"
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#define DIV_MAX_CSTRACE 64
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class DivEngine;
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struct DivCSChannelState {
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unsigned int startPos;
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unsigned int readPos;
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int waitTicks;
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int lastWaitLen;
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int note, pitch;
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int volume, volMax, volSpeed;
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int vibratoDepth, vibratoRate, vibratoPos;
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int portaTarget, portaSpeed;
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unsigned char arp, arpStage, arpTicks;
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unsigned int callStack[8];
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unsigned char callStackPos;
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unsigned int trace[DIV_MAX_CSTRACE];
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unsigned char tracePos;
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bool doCall(unsigned int addr);
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DivCSChannelState():
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readPos(0),
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waitTicks(0),
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lastWaitLen(0),
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note(-1),
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pitch(0),
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volume(0x7f00),
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volMax(0),
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volSpeed(0),
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vibratoDepth(0),
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vibratoRate(0),
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vibratoPos(0),
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portaTarget(0),
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portaSpeed(0),
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arp(0),
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arpStage(0),
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arpTicks(0),
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callStackPos(0),
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tracePos(0) {
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for (int i=0; i<DIV_MAX_CSTRACE; i++) {
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trace[i]=0;
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}
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}
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};
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class DivCSPlayer {
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DivEngine* e;
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unsigned char* b;
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size_t bLen;
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SafeReader stream;
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DivCSChannelState chan[DIV_MAX_CHANS];
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unsigned char fastDelays[16];
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unsigned char fastCmds[16];
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unsigned char arpSpeed;
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short vibTable[64];
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public:
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unsigned char* getData();
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size_t getDataLen();
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DivCSChannelState* getChanState(int ch);
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unsigned char* getFastDelays();
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unsigned char* getFastCmds();
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void cleanup();
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bool tick();
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bool init();
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DivCSPlayer(DivEngine* en, unsigned char* buf, size_t len):
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e(en),
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b(buf),
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bLen(len),
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stream(buf,len) {}
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};
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#endif
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