furnace/src/engine/cmdStream.h

89 lines
2.1 KiB
C
Raw Normal View History

/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2023 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 _CMD_STREAM_H
#define _CMD_STREAM_H
#include "defines.h"
#include "safeReader.h"
class DivEngine;
struct DivCSChannelState {
unsigned int readPos;
int waitTicks;
2023-03-27 05:40:54 +00:00
int note, pitch;
int volume, volMax, volSpeed;
2023-03-27 05:40:54 +00:00
int vibratoDepth, vibratoRate, vibratoPos;
int portaTarget, portaSpeed;
unsigned char arp, arpStage, arpTicks;
unsigned int callStack[8];
unsigned char callStackPos;
struct TraceEntry {
unsigned int addr;
unsigned char length;
unsigned char data[11];
} trace[32];
unsigned char tracePos;
bool doCall(unsigned int addr);
DivCSChannelState():
readPos(0),
waitTicks(0),
2023-03-27 05:40:54 +00:00
note(-1),
pitch(0),
volume(0x7f00),
volMax(0),
2023-03-27 05:40:54 +00:00
volSpeed(0),
vibratoDepth(0),
vibratoRate(0),
vibratoPos(0),
portaTarget(0),
portaSpeed(0),
arp(0),
arpStage(0),
arpTicks(0),
callStackPos(0) {}
};
class DivCSPlayer {
DivEngine* e;
unsigned char* b;
SafeReader stream;
DivCSChannelState chan[DIV_MAX_CHANS];
unsigned char fastDelays[16];
unsigned char fastCmds[16];
2023-03-27 05:40:54 +00:00
short vibTable[64];
public:
void cleanup();
bool tick();
bool init();
DivCSPlayer(DivEngine* en, unsigned char* buf, size_t len):
e(en),
b(buf),
stream(buf,len) {}
};
#endif