mirror of
https://github.com/libretro/scummvm.git
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2401 lines
68 KiB
C++
2401 lines
68 KiB
C++
/* ScummVM - Scumm Interpreter
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*
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* This file is licensed under both GPL and LGPL
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* Copyright (C) 2006 The ScummVM project
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* Copyright (C) 2006 Torbjorn Andersson and Johannes Schickel
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*
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* GPL License
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* LPGL License
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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* This library 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 GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/stdafx.h"
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#include "common/system.h"
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#include "common/mutex.h"
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#include "kyra/resource.h"
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#include "kyra/sound.h"
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#include "sound/mixer.h"
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#include "sound/fmopl.h"
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#include "sound/audiostream.h"
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// Basic Adlib Programming:
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// http://www.gamedev.net/reference/articles/article446.asp
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#define CALLBACKS_PER_SECOND 72
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namespace Kyra {
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class AdlibDriver : public Audio::AudioStream {
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public:
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AdlibDriver(Audio::Mixer *mixer, bool v2);
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~AdlibDriver();
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int callback(int opcode, ...);
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void callback();
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// AudioStream API
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int readBuffer(int16 *buffer, const int numSamples) {
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int32 samplesLeft = numSamples;
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memset(buffer, 0, sizeof(int16) * numSamples);
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while (samplesLeft) {
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if (!_samplesTillCallback) {
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callback();
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_samplesTillCallback = _samplesPerCallback;
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_samplesTillCallbackRemainder += _samplesPerCallbackRemainder;
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if (_samplesTillCallbackRemainder >= CALLBACKS_PER_SECOND) {
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_samplesTillCallback++;
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_samplesTillCallbackRemainder -= CALLBACKS_PER_SECOND;
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}
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}
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int32 render = MIN(samplesLeft, _samplesTillCallback);
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samplesLeft -= render;
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_samplesTillCallback -= render;
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YM3812UpdateOne(_adlib, buffer, render);
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buffer += render;
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}
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return numSamples;
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}
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bool isStereo() const { return false; }
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bool endOfData() const { return false; }
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int getRate() const { return _mixer->getOutputRate(); }
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void setSyncJumpMask(uint16 mask) { _syncJumpMask = mask; }
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private:
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struct OpcodeEntry {
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typedef int (AdlibDriver::*DriverOpcode)(va_list &list);
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DriverOpcode function;
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const char *name;
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};
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void setupOpcodeList();
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const OpcodeEntry *_opcodeList;
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int _opcodesEntries;
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int snd_ret0x100(va_list &list);
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int snd_ret0x1983(va_list &list);
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int snd_initDriver(va_list &list);
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int snd_deinitDriver(va_list &list);
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int snd_setSoundData(va_list &list);
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int snd_unkOpcode1(va_list &list);
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int snd_startSong(va_list &list);
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int snd_unkOpcode2(va_list &list);
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int snd_unkOpcode3(va_list &list);
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int snd_readByte(va_list &list);
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int snd_writeByte(va_list &list);
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int snd_getSoundTrigger(va_list &list);
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int snd_unkOpcode4(va_list &list);
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int snd_dummy(va_list &list);
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int snd_getNullvar4(va_list &list);
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int snd_setNullvar3(va_list &list);
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int snd_setFlag(va_list &list);
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int snd_clearFlag(va_list &list);
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// These variables have not yet been named, but some of them are partly
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// known nevertheless:
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//
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// unk16 - Sound-related. Possibly some sort of pitch bend.
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// unk18 - Sound-effect. Used for secondaryEffect1()
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// unk19 - Sound-effect. Used for secondaryEffect1()
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// unk20 - Sound-effect. Used for secondaryEffect1()
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// unk21 - Sound-effect. Used for secondaryEffect1()
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// unk22 - Sound-effect. Used for secondaryEffect1()
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// unk29 - Sound-effect. Used for primaryEffect1()
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// unk30 - Sound-effect. Used for primaryEffect1()
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// unk31 - Sound-effect. Used for primaryEffect1()
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// unk32 - Sound-effect. Used for primaryEffect2()
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// unk33 - Sound-effect. Used for primaryEffect2()
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// unk34 - Sound-effect. Used for primaryEffect2()
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// unk35 - Sound-effect. Used for primaryEffect2()
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// unk36 - Sound-effect. Used for primaryEffect2()
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// unk37 - Sound-effect. Used for primaryEffect2()
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// unk38 - Sound-effect. Used for primaryEffect2()
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// unk39 - Currently unused, except for updateCallback56()
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// unk40 - Currently unused, except for updateCallback56()
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// unk41 - Sound-effect. Used for primaryEffect2()
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struct Channel {
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bool lock; // New to ScummVM
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uint8 opExtraLevel2;
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uint8 *dataptr;
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uint8 duration;
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uint8 repeatCounter;
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int8 baseOctave;
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uint8 priority;
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uint8 dataptrStackPos;
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uint8 *dataptrStack[4];
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int8 baseNote;
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uint8 unk29;
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uint8 unk31;
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uint16 unk30;
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uint16 unk37;
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uint8 unk33;
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uint8 unk34;
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uint8 unk35;
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uint8 unk36;
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uint8 unk32;
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uint8 unk41;
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uint8 unk38;
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uint8 opExtraLevel1;
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uint8 spacing2;
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uint8 baseFreq;
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uint8 tempo;
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uint8 position;
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uint8 regAx;
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uint8 regBx;
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typedef void (AdlibDriver::*Callback)(Channel&);
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Callback primaryEffect;
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Callback secondaryEffect;
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uint8 fractionalSpacing;
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uint8 opLevel1;
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uint8 opLevel2;
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uint8 opExtraLevel3;
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uint8 twoChan;
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uint8 unk39;
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uint8 unk40;
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uint8 spacing1;
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uint8 durationRandomness;
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uint8 unk19;
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uint8 unk18;
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int8 unk20;
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int8 unk21;
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uint8 unk22;
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uint16 offset;
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uint8 tempoReset;
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uint8 rawNote;
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int8 unk16;
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};
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void primaryEffect1(Channel &channel);
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void primaryEffect2(Channel &channel);
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void secondaryEffect1(Channel &channel);
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void resetAdlibState();
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void writeOPL(byte reg, byte val);
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void initChannel(Channel &channel);
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void noteOff(Channel &channel);
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void unkOutput2(uint8 num);
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uint16 getRandomNr();
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void setupDuration(uint8 duration, Channel &channel);
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void setupNote(uint8 rawNote, Channel &channel, bool flag = false);
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void setupInstrument(uint8 regOffset, uint8 *dataptr, Channel &channel);
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void noteOn(Channel &channel);
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void adjustVolume(Channel &channel);
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uint8 calculateOpLevel1(Channel &channel);
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uint8 calculateOpLevel2(Channel &channel);
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uint16 checkValue(int16 val) {
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if (val < 0)
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val = 0;
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else if (val > 0x3F)
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val = 0x3F;
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return val;
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}
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// The sound data has at least two lookup tables:
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//
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// * One for programs, starting at offset 0.
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// * One for instruments, starting at offset 500.
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uint8 *getProgram(int progId) {
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return _soundData + READ_LE_UINT16(_soundData + 2 * progId);
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}
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uint8 *getInstrument(int instrumentId) {
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return _soundData + READ_LE_UINT16(_soundData + (_v2 ? 1000 : 500) + 2 * instrumentId);
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}
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void setupPrograms();
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void executePrograms();
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struct ParserOpcode {
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typedef int (AdlibDriver::*POpcode)(uint8 *&dataptr, Channel &channel, uint8 value);
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POpcode function;
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const char *name;
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};
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void setupParserOpcodeTable();
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const ParserOpcode *_parserOpcodeTable;
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int _parserOpcodeTableSize;
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int update_setRepeat(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_checkRepeat(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupProgram(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setNoteSpacing(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_jump(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_jumpToSubroutine(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_returnFromSubroutine(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setBaseOctave(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_stopChannel(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_playRest(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_writeAdlib(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupNoteAndDuration(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setBaseNote(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupSecondaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_stopOtherChannel(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_waitForEndOfProgram(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupInstrument(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupPrimaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_removePrimaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setBaseFreq(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupPrimaryEffect2(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setPriority(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback23(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback24(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setExtraLevel1(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupDuration(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_playNote(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setFractionalNoteSpacing(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setTempo(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_removeSecondaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setChannelTempo(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setExtraLevel3(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setExtraLevel2(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_changeExtraLevel2(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setAMDepth(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setVibratoDepth(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_changeExtraLevel1(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback38(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback39(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_removePrimaryEffect2(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback41(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_resetToGlobalTempo(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_nop1(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setDurationRandomness(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_changeChannelTempo(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback46(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_nop2(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setupRhythmSection(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_playRhythmSection(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_removeRhythmSection(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback51(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback52(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback53(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setSoundTrigger(uint8 *&dataptr, Channel &channel, uint8 value);
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int update_setTempoReset(uint8 *&dataptr, Channel &channel, uint8 value);
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int updateCallback56(uint8 *&dataptr, Channel &channel, uint8 value);
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private:
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// These variables have not yet been named, but some of them are partly
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// known nevertheless:
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//
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// _unkValue1 - Unknown. Used for updating _unkValue2
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// _unkValue2 - Unknown. Used for updating _unkValue4
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// _unkValue3 - Unknown. Used for updating _unkValue2
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// _unkValue4 - Unknown. Used for updating _unkValue5
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// _unkValue5 - Unknown. Used for controlling updateCallback24().
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// _unkValue6 - Unknown. Rhythm section volume?
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// _unkValue7 - Unknown. Rhythm section volume?
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// _unkValue8 - Unknown. Rhythm section volume?
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// _unkValue9 - Unknown. Rhythm section volume?
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// _unkValue10 - Unknown. Rhythm section volume?
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// _unkValue11 - Unknown. Rhythm section volume?
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// _unkValue12 - Unknown. Rhythm section volume?
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// _unkValue13 - Unknown. Rhythm section volume?
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// _unkValue14 - Unknown. Rhythm section volume?
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// _unkValue15 - Unknown. Rhythm section volume?
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// _unkValue16 - Unknown. Rhythm section volume?
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// _unkValue17 - Unknown. Rhythm section volume?
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// _unkValue18 - Unknown. Rhythm section volume?
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// _unkValue19 - Unknown. Rhythm section volume?
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// _unkValue20 - Unknown. Rhythm section volume?
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// _unkTable[] - Probably frequences for the 12-tone scale.
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// _unkTable2[] - Unknown. Currently only used by updateCallback46()
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// _unkTable2_1[] - One of the tables in _unkTable2[]
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// _unkTable2_2[] - One of the tables in _unkTable2[]
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// _unkTable2_3[] - One of the tables in _unkTable2[]
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int32 _samplesPerCallback;
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int32 _samplesPerCallbackRemainder;
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int32 _samplesTillCallback;
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int32 _samplesTillCallbackRemainder;
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int _lastProcessed;
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int8 _flagTrigger;
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int _curChannel;
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uint8 _soundTrigger;
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int _soundsPlaying;
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uint16 _rnd;
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uint8 _unkValue1;
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uint8 _unkValue2;
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uint8 _unkValue3;
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uint8 _unkValue4;
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uint8 _unkValue5;
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uint8 _unkValue6;
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uint8 _unkValue7;
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uint8 _unkValue8;
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uint8 _unkValue9;
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uint8 _unkValue10;
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uint8 _unkValue11;
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uint8 _unkValue12;
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uint8 _unkValue13;
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uint8 _unkValue14;
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uint8 _unkValue15;
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uint8 _unkValue16;
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uint8 _unkValue17;
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uint8 _unkValue18;
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uint8 _unkValue19;
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uint8 _unkValue20;
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int _flags;
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FM_OPL *_adlib;
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uint8 *_soundData;
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uint8 _soundIdTable[0x10];
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Channel _channels[10];
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uint8 _vibratoAndAMDepthBits;
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uint8 _rhythmSectionBits;
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uint8 _curRegOffset;
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uint8 _tempo;
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const uint8 *_tablePtr1;
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const uint8 *_tablePtr2;
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static const uint8 _regOffset[];
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static const uint16 _unkTable[];
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static const uint8 *_unkTable2[];
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static const uint8 _unkTable2_1[];
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static const uint8 _unkTable2_2[];
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static const uint8 _unkTable2_3[];
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static const uint8 _unkTables[][32];
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uint16 _syncJumpMask;
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Common::Mutex _mutex;
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Audio::Mixer *_mixer;
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Audio::SoundHandle _soundHandle;
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bool _v2;
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void lock() { _mutex.lock(); }
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void unlock() { _mutex.unlock(); }
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};
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AdlibDriver::AdlibDriver(Audio::Mixer *mixer, bool v2) {
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setupOpcodeList();
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setupParserOpcodeTable();
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_v2 = v2;
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_mixer = mixer;
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_flags = 0;
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_adlib = makeAdlibOPL(getRate());
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assert(_adlib);
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memset(_channels, 0, sizeof(_channels));
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_soundData = 0;
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_vibratoAndAMDepthBits = _curRegOffset = 0;
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_lastProcessed = _flagTrigger = _curChannel = _rhythmSectionBits = 0;
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_soundsPlaying = 0;
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_rnd = 0x1234;
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_tempo = 0;
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_soundTrigger = 0;
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_unkValue3 = 0xFF;
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_unkValue1 = _unkValue2 = _unkValue4 = _unkValue5 = 0;
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_unkValue6 = _unkValue7 = _unkValue8 = _unkValue9 = _unkValue10 = 0;
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_unkValue11 = _unkValue12 = _unkValue13 = _unkValue14 = _unkValue15 =
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_unkValue16 = _unkValue17 = _unkValue18 = _unkValue19 = _unkValue20 = 0;
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_tablePtr1 = _tablePtr2 = 0;
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_mixer->playInputStream(Audio::Mixer::kPlainSoundType, &_soundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, false, true);
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_samplesPerCallback = getRate() / CALLBACKS_PER_SECOND;
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_samplesPerCallbackRemainder = getRate() % CALLBACKS_PER_SECOND;
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_samplesTillCallback = 0;
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_samplesTillCallbackRemainder = 0;
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_syncJumpMask = 0;
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}
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AdlibDriver::~AdlibDriver() {
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_mixer->stopHandle(_soundHandle);
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OPLDestroy(_adlib);
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_adlib = 0;
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}
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|
|
int AdlibDriver::callback(int opcode, ...) {
|
|
lock();
|
|
if (opcode >= _opcodesEntries || opcode < 0) {
|
|
warning("AdlibDriver: calling unknown opcode '%d'", opcode);
|
|
return 0;
|
|
}
|
|
|
|
debugC(9, kDebugLevelSound, "Calling opcode '%s' (%d)", _opcodeList[opcode].name, opcode);
|
|
|
|
va_list args;
|
|
va_start(args, opcode);
|
|
int returnValue = (this->*(_opcodeList[opcode].function))(args);
|
|
va_end(args);
|
|
unlock();
|
|
return returnValue;
|
|
}
|
|
|
|
// Opcodes
|
|
|
|
int AdlibDriver::snd_ret0x100(va_list &list) {
|
|
return 0x100;
|
|
}
|
|
|
|
int AdlibDriver::snd_ret0x1983(va_list &list) {
|
|
return 0x1983;
|
|
}
|
|
|
|
int AdlibDriver::snd_initDriver(va_list &list) {
|
|
_lastProcessed = _soundsPlaying = 0;
|
|
resetAdlibState();
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_deinitDriver(va_list &list) {
|
|
resetAdlibState();
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_setSoundData(va_list &list) {
|
|
if (_soundData) {
|
|
delete [] _soundData;
|
|
_soundData = 0;
|
|
}
|
|
_soundData = va_arg(list, uint8*);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_unkOpcode1(va_list &list) {
|
|
warning("unimplemented snd_unkOpcode1");
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_startSong(va_list &list) {
|
|
int songId = va_arg(list, int);
|
|
_flags |= 8;
|
|
_flagTrigger = 1;
|
|
|
|
uint8 *ptr = getProgram(songId);
|
|
uint8 chan = *ptr;
|
|
|
|
if ((songId << 1) != 0) {
|
|
if (chan == 9) {
|
|
if (_flags & 2)
|
|
return 0;
|
|
} else {
|
|
if (_flags & 1)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
_soundIdTable[_soundsPlaying++] = songId;
|
|
_soundsPlaying &= 0x0F;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_unkOpcode2(va_list &list) {
|
|
warning("unimplemented snd_unkOpcode2");
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_unkOpcode3(va_list &list) {
|
|
int value = va_arg(list, int);
|
|
int loop = value;
|
|
if (value < 0) {
|
|
value = 0;
|
|
loop = 9;
|
|
}
|
|
loop -= value;
|
|
++loop;
|
|
|
|
while (loop--) {
|
|
_curChannel = value;
|
|
Channel &channel = _channels[_curChannel];
|
|
channel.priority = 0;
|
|
channel.dataptr = 0;
|
|
if (value != 9)
|
|
noteOff(channel);
|
|
++value;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_readByte(va_list &list) {
|
|
int a = va_arg(list, int);
|
|
int b = va_arg(list, int);
|
|
uint8 *ptr = getProgram(a) + b;
|
|
return *ptr;
|
|
}
|
|
|
|
int AdlibDriver::snd_writeByte(va_list &list) {
|
|
int a = va_arg(list, int);
|
|
int b = va_arg(list, int);
|
|
int c = va_arg(list, int);
|
|
uint8 *ptr = getProgram(a) + b;
|
|
uint8 oldValue = *ptr;
|
|
*ptr = (uint8)c;
|
|
return oldValue;
|
|
}
|
|
|
|
int AdlibDriver::snd_getSoundTrigger(va_list &list) {
|
|
return _soundTrigger;
|
|
}
|
|
|
|
int AdlibDriver::snd_unkOpcode4(va_list &list) {
|
|
warning("unimplemented snd_unkOpcode4");
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_dummy(va_list &list) {
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_getNullvar4(va_list &list) {
|
|
warning("unimplemented snd_getNullvar4");
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_setNullvar3(va_list &list) {
|
|
warning("unimplemented snd_setNullvar3");
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::snd_setFlag(va_list &list) {
|
|
int oldFlags = _flags;
|
|
_flags |= va_arg(list, int);
|
|
return oldFlags;
|
|
}
|
|
|
|
int AdlibDriver::snd_clearFlag(va_list &list) {
|
|
int oldFlags = _flags;
|
|
_flags &= ~(va_arg(list, int));
|
|
return oldFlags;
|
|
}
|
|
|
|
// timer callback
|
|
|
|
void AdlibDriver::callback() {
|
|
lock();
|
|
--_flagTrigger;
|
|
if (_flagTrigger < 0)
|
|
_flags &= ~8;
|
|
setupPrograms();
|
|
executePrograms();
|
|
|
|
uint8 temp = _unkValue3;
|
|
_unkValue3 += _tempo;
|
|
if (_unkValue3 < temp) {
|
|
if (!(--_unkValue2)) {
|
|
_unkValue2 = _unkValue1;
|
|
++_unkValue4;
|
|
}
|
|
}
|
|
unlock();
|
|
}
|
|
|
|
void AdlibDriver::setupPrograms() {
|
|
while (_lastProcessed != _soundsPlaying) {
|
|
uint8 *ptr = getProgram(_soundIdTable[_lastProcessed]);
|
|
uint8 chan = *ptr++;
|
|
uint8 priority = *ptr++;
|
|
|
|
// Only start this sound if its priority is higher than the one
|
|
// already playing.
|
|
|
|
Channel &channel = _channels[chan];
|
|
|
|
if (priority >= channel.priority) {
|
|
initChannel(channel);
|
|
channel.priority = priority;
|
|
channel.dataptr = ptr;
|
|
channel.tempo = 0xFF;
|
|
channel.position = 0xFF;
|
|
channel.duration = 1;
|
|
unkOutput2(chan);
|
|
}
|
|
|
|
// What we have set up now is, probably, the controlling
|
|
// channel for the sound. It is assumed that this program will
|
|
// set up all the other channels it needs, clearing their locks
|
|
// along the way.
|
|
|
|
++_lastProcessed;
|
|
_lastProcessed &= 0x0F;
|
|
}
|
|
}
|
|
|
|
// A few words on opcode parsing and timing:
|
|
//
|
|
// First of all, We simulate a timer callback 72 times per second. Each timeout
|
|
// we update each channel that has something to play.
|
|
//
|
|
// Each channel has its own individual tempo, which is added to its position.
|
|
// This will frequently cause the position to "wrap around" but that is
|
|
// intentional. In fact, it's the signal to go ahead and do more stuff with
|
|
// that channel.
|
|
//
|
|
// Each channel also has a duration, indicating how much time is left on the
|
|
// its current task. This duration is decreased by one. As long as it still has
|
|
// not reached zero, the only thing that can happen is that the note is turned
|
|
// off depending on manual or automatic note spacing. Once the duration reaches
|
|
// zero, a new set of musical opcodes are executed.
|
|
//
|
|
// An opcode is one byte, followed by a variable number of parameters. Since
|
|
// most opcodes have at least one one-byte parameter, we read that as well. Any
|
|
// opcode that doesn't have that one parameter is responsible for moving the
|
|
// data pointer back again.
|
|
//
|
|
// If the most significant bit of the opcode is 1, it's a function; call it.
|
|
// The opcode functions return either 0 (continue), 1 (stop) or 2 (stop, and do
|
|
// not run the effects callbacks).
|
|
//
|
|
// If the most significant bit of the opcode is 0, it's a note, and the first
|
|
// parameter is its duration. (There are cases where the duration is modified
|
|
// but that's an exception.) The note opcode is assumed to return 1, and is the
|
|
// last opcode unless its duration is zero.
|
|
//
|
|
// Finally, most of the times that the callback is called, it will invoke the
|
|
// effects callbacks. The final opcode in a set can prevent this, if it's a
|
|
// function and it returns anything other than 1.
|
|
|
|
void AdlibDriver::executePrograms() {
|
|
// Each channel runs its own program. There are ten channels: One for
|
|
// each Adlib channel (0-8), plus one "control channel" (9) which is
|
|
// the one that tells the other channels what to do.
|
|
|
|
// This is where we ensure that channels that are made to jump "in
|
|
// sync" do so.
|
|
|
|
if (_syncJumpMask) {
|
|
bool forceUnlock = true;
|
|
|
|
for (_curChannel = 9; _curChannel >= 0; --_curChannel) {
|
|
if ((_syncJumpMask & (1 << _curChannel)) == 0)
|
|
continue;
|
|
|
|
if (_channels[_curChannel].dataptr && !_channels[_curChannel].lock)
|
|
forceUnlock = false;
|
|
}
|
|
|
|
if (forceUnlock) {
|
|
for (_curChannel = 9; _curChannel >= 0; --_curChannel)
|
|
if (_syncJumpMask & (1 << _curChannel))
|
|
_channels[_curChannel].lock = false;
|
|
}
|
|
}
|
|
|
|
for (_curChannel = 9; _curChannel >= 0; --_curChannel) {
|
|
int result = 1;
|
|
|
|
if (!_channels[_curChannel].dataptr)
|
|
continue;
|
|
|
|
if (_channels[_curChannel].lock && (_syncJumpMask & (1 << _curChannel)))
|
|
continue;
|
|
|
|
Channel &channel = _channels[_curChannel];
|
|
_curRegOffset = _regOffset[_curChannel];
|
|
|
|
if (channel.tempoReset)
|
|
channel.tempo = _tempo;
|
|
|
|
uint8 backup = channel.position;
|
|
channel.position += channel.tempo;
|
|
if (channel.position < backup) {
|
|
if (--channel.duration) {
|
|
if (channel.duration == channel.spacing2)
|
|
noteOff(channel);
|
|
if (channel.duration == channel.spacing1 && _curChannel != 9)
|
|
noteOff(channel);
|
|
} else {
|
|
// An opcode is not allowed to modify its own
|
|
// data pointer except through the 'dataptr'
|
|
// parameter. To enforce that, we have to work
|
|
// on a copy of the data pointer.
|
|
//
|
|
// This fixes a subtle music bug where the
|
|
// wrong music would play when getting the
|
|
// quill in Kyra 1.
|
|
uint8 *dataptr = channel.dataptr;
|
|
while (dataptr) {
|
|
uint8 opcode = *dataptr++;
|
|
uint8 param = *dataptr++;
|
|
|
|
if (opcode & 0x80) {
|
|
opcode &= 0x7F;
|
|
if (opcode >= _parserOpcodeTableSize)
|
|
opcode = _parserOpcodeTableSize - 1;
|
|
debugC(9, kDebugLevelSound, "Calling opcode '%s' (%d) (channel: %d)", _parserOpcodeTable[opcode].name, opcode, _curChannel);
|
|
result = (this->*(_parserOpcodeTable[opcode].function))(dataptr, channel, param);
|
|
channel.dataptr = dataptr;
|
|
if (result)
|
|
break;
|
|
} else {
|
|
debugC(9, kDebugLevelSound, "Note on opcode 0x%02X (duration: %d) (channel: %d)", opcode, param, _curChannel);
|
|
setupNote(opcode, channel);
|
|
noteOn(channel);
|
|
setupDuration(param, channel);
|
|
if (param) {
|
|
channel.dataptr = dataptr;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (result == 1) {
|
|
if (channel.primaryEffect)
|
|
(this->*(channel.primaryEffect))(channel);
|
|
if (channel.secondaryEffect)
|
|
(this->*(channel.secondaryEffect))(channel);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
|
|
void AdlibDriver::resetAdlibState() {
|
|
debugC(9, kDebugLevelSound, "resetAdlibState()");
|
|
_rnd = 0x1234;
|
|
|
|
// Authorize the control of the waveforms
|
|
writeOPL(0x01, 0x20);
|
|
|
|
// Select FM music mode
|
|
writeOPL(0x08, 0x00);
|
|
|
|
// I would guess the main purpose of this is to turn off the rhythm,
|
|
// thus allowing us to use 9 melodic voices instead of 6.
|
|
writeOPL(0xBD, 0x00);
|
|
|
|
int loop = 10;
|
|
while (loop--) {
|
|
if (loop != 9) {
|
|
// Silence the channel
|
|
writeOPL(0x40 + _regOffset[loop], 0x3F);
|
|
writeOPL(0x43 + _regOffset[loop], 0x3F);
|
|
}
|
|
initChannel(_channels[loop]);
|
|
}
|
|
}
|
|
|
|
// Old calling style: output0x388(0xABCD)
|
|
// New calling style: writeOPL(0xAB, 0xCD)
|
|
|
|
void AdlibDriver::writeOPL(byte reg, byte val) {
|
|
OPLWriteReg(_adlib, reg, val);
|
|
}
|
|
|
|
void AdlibDriver::initChannel(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "initChannel(%lu)", (long)(&channel - _channels));
|
|
memset(&channel.dataptr, 0, sizeof(Channel) - ((char*)&channel.dataptr - (char*)&channel));
|
|
|
|
channel.tempo = 0xFF;
|
|
channel.priority = 0;
|
|
// normally here are nullfuncs but we set 0 for now
|
|
channel.primaryEffect = 0;
|
|
channel.secondaryEffect = 0;
|
|
channel.spacing1 = 1;
|
|
channel.lock = false;
|
|
}
|
|
|
|
void AdlibDriver::noteOff(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "noteOff(%lu)", (long)(&channel - _channels));
|
|
|
|
// The control channel has no corresponding Adlib channel
|
|
|
|
if (_curChannel >= 9)
|
|
return;
|
|
|
|
// When the rhythm section is enabled, channels 6, 7 and 8 are special.
|
|
|
|
if (_rhythmSectionBits && _curChannel >= 6)
|
|
return;
|
|
|
|
// This means the "Key On" bit will always be 0
|
|
channel.regBx &= 0xDF;
|
|
|
|
// Octave / F-Number / Key-On
|
|
writeOPL(0xB0 + _curChannel, channel.regBx);
|
|
}
|
|
|
|
void AdlibDriver::unkOutput2(uint8 chan) {
|
|
debugC(9, kDebugLevelSound, "unkOutput2(%d)", chan);
|
|
|
|
// The control channel has no corresponding Adlib channel
|
|
|
|
if (chan >= 9)
|
|
return;
|
|
|
|
// I believe this has to do with channels 6, 7, and 8 being special
|
|
// when Adlib's rhythm section is enabled.
|
|
|
|
if (_rhythmSectionBits && chan >= 6)
|
|
return;
|
|
|
|
uint8 offset = _regOffset[chan];
|
|
|
|
// The channel is cleared: First the attack/delay rate, then the
|
|
// sustain level/release rate, and finally the note is turned off.
|
|
|
|
writeOPL(0x60 + offset, 0xFF);
|
|
writeOPL(0x63 + offset, 0xFF);
|
|
|
|
writeOPL(0x80 + offset, 0xFF);
|
|
writeOPL(0x83 + offset, 0xFF);
|
|
|
|
writeOPL(0xB0 + chan, 0x00);
|
|
|
|
// ...and then the note is turned on again, with whatever value is
|
|
// still lurking in the A0 + chan register, but everything else -
|
|
// including the two most significant frequency bit, and the octave -
|
|
// set to zero.
|
|
//
|
|
// This is very strange behaviour, and causes problems with the ancient
|
|
// FMOPL code we borrowed from AdPlug. I've added a workaround. See
|
|
// fmopl.cpp for more details.
|
|
//
|
|
// More recent versions of the MAME FMOPL don't seem to have this
|
|
// problem, but cannot currently be used because of licensing and
|
|
// performance issues.
|
|
//
|
|
// Ken Silverman's Adlib emulator (which can be found on his Web page -
|
|
// http://www.advsys.net/ken - and as part of AdPlug) also seems to be
|
|
// immune, but is apparently not as feature complete as MAME's.
|
|
|
|
writeOPL(0xB0 + chan, 0x20);
|
|
}
|
|
|
|
// I believe this is a random number generator. It actually does seem to
|
|
// generate an even distribution of almost all numbers from 0 through 65535,
|
|
// though in my tests some numbers were never generated.
|
|
|
|
uint16 AdlibDriver::getRandomNr() {
|
|
_rnd += 0x9248;
|
|
uint16 lowBits = _rnd & 7;
|
|
_rnd >>= 3;
|
|
_rnd |= (lowBits << 13);
|
|
return _rnd;
|
|
}
|
|
|
|
void AdlibDriver::setupDuration(uint8 duration, Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "setupDuration(%d, %lu)", duration, (long)(&channel - _channels));
|
|
if (channel.durationRandomness) {
|
|
channel.duration = duration + (getRandomNr() & channel.durationRandomness);
|
|
return;
|
|
}
|
|
if (channel.fractionalSpacing)
|
|
channel.spacing2 = (duration >> 3) * channel.fractionalSpacing;
|
|
channel.duration = duration;
|
|
}
|
|
|
|
// This function may or may not play the note. It's usually followed by a call
|
|
// to noteOn(), which will always play the current note.
|
|
|
|
void AdlibDriver::setupNote(uint8 rawNote, Channel &channel, bool flag) {
|
|
debugC(9, kDebugLevelSound, "setupNote(%d, %lu)", rawNote, (long)(&channel - _channels));
|
|
|
|
channel.rawNote = rawNote;
|
|
|
|
int8 note = (rawNote & 0x0F) + channel.baseNote;
|
|
int8 octave = ((rawNote + channel.baseOctave) >> 4) & 0x0F;
|
|
|
|
// There are only twelve notes. If we go outside that, we have to
|
|
// adjust the note and octave.
|
|
|
|
if (note >= 12) {
|
|
note -= 12;
|
|
octave++;
|
|
} else if (note < 0) {
|
|
note += 12;
|
|
octave--;
|
|
}
|
|
|
|
// The calculation of frequency looks quite different from the original
|
|
// disassembly at a first glance, but when you consider that the
|
|
// largest possible value would be 0x0246 + 0xFF + 0x47 (and that's if
|
|
// baseFreq is unsigned), freq is still a 10-bit value, just as it
|
|
// should be to fit in the Ax and Bx registers.
|
|
//
|
|
// If it were larger than that, it could have overflowed into the
|
|
// octave bits, and that could possibly have been used in some sound.
|
|
// But as it is now, I can't see any way it would happen.
|
|
|
|
uint16 freq = _unkTable[note] + channel.baseFreq;
|
|
|
|
// When called from callback 41, the behaviour is slightly different:
|
|
// We adjust the frequency, even when channel.unk16 is 0.
|
|
|
|
if (channel.unk16 || flag) {
|
|
const uint8 *table;
|
|
|
|
if (channel.unk16 >= 0) {
|
|
table = _unkTables[(channel.rawNote & 0x0F) + 2];
|
|
freq += table[channel.unk16];
|
|
} else {
|
|
table = _unkTables[channel.rawNote & 0x0F];
|
|
freq -= table[-channel.unk16];
|
|
}
|
|
}
|
|
|
|
channel.regAx = freq & 0xFF;
|
|
channel.regBx = (channel.regBx & 0x20) | (octave << 2) | ((freq >> 8) & 0x03);
|
|
|
|
// Keep the note on or off
|
|
writeOPL(0xA0 + _curChannel, channel.regAx);
|
|
writeOPL(0xB0 + _curChannel, channel.regBx);
|
|
}
|
|
|
|
void AdlibDriver::setupInstrument(uint8 regOffset, uint8 *dataptr, Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "setupInstrument(%d, %p, %lu)", regOffset, (const void *)dataptr, (long)(&channel - _channels));
|
|
// Amplitude Modulation / Vibrato / Envelope Generator Type /
|
|
// Keyboard Scaling Rate / Modulator Frequency Multiple
|
|
writeOPL(0x20 + regOffset, *dataptr++);
|
|
writeOPL(0x23 + regOffset, *dataptr++);
|
|
|
|
uint8 temp = *dataptr++;
|
|
|
|
// Feedback / Algorithm
|
|
|
|
// It is very likely that _curChannel really does refer to the same
|
|
// channel as regOffset, but there's only one Cx register per channel.
|
|
|
|
writeOPL(0xC0 + _curChannel, temp);
|
|
|
|
// The algorithm bit. I don't pretend to understand this fully, but
|
|
// "If set to 0, operator 1 modulates operator 2. In this case,
|
|
// operator 2 is the only one producing sound. If set to 1, both
|
|
// operators produce sound directly. Complex sounds are more easily
|
|
// created if the algorithm is set to 0."
|
|
|
|
channel.twoChan = temp & 1;
|
|
|
|
// Waveform Select
|
|
writeOPL(0xE0 + regOffset, *dataptr++);
|
|
writeOPL(0xE3 + regOffset, *dataptr++);
|
|
|
|
channel.opLevel1 = *dataptr++;
|
|
channel.opLevel2 = *dataptr++;
|
|
|
|
// Level Key Scaling / Total Level
|
|
writeOPL(0x40 + regOffset, calculateOpLevel1(channel));
|
|
writeOPL(0x43 + regOffset, calculateOpLevel2(channel));
|
|
|
|
// Attack Rate / Decay Rate
|
|
writeOPL(0x60 + regOffset, *dataptr++);
|
|
writeOPL(0x63 + regOffset, *dataptr++);
|
|
|
|
// Sustain Level / Release Rate
|
|
writeOPL(0x80 + regOffset, *dataptr++);
|
|
writeOPL(0x83 + regOffset, *dataptr++);
|
|
}
|
|
|
|
// Apart from playing the note, this function also updates the variables for
|
|
// primary effect 2.
|
|
|
|
void AdlibDriver::noteOn(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "noteOn(%lu)", (long)(&channel - _channels));
|
|
|
|
// The "note on" bit is set, and the current note is played.
|
|
|
|
channel.regBx |= 0x20;
|
|
writeOPL(0xB0 + _curChannel, channel.regBx);
|
|
|
|
int8 shift = 9 - channel.unk33;
|
|
uint16 temp = channel.regAx | (channel.regBx << 8);
|
|
channel.unk37 = ((temp & 0x3FF) >> shift) & 0xFF;
|
|
channel.unk38 = channel.unk36;
|
|
}
|
|
|
|
void AdlibDriver::adjustVolume(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "adjustVolume(%lu)", (long)(&channel - _channels));
|
|
// Level Key Scaling / Total Level
|
|
|
|
writeOPL(0x43 + _regOffset[_curChannel], calculateOpLevel2(channel));
|
|
if (channel.twoChan)
|
|
writeOPL(0x40 + _regOffset[_curChannel], calculateOpLevel1(channel));
|
|
}
|
|
|
|
// This is presumably only used for some sound effects, e.g. Malcolm blowing up
|
|
// the trees in the intro (but not the effect where he "booby-traps" the big
|
|
// tree) and turning Kallak to stone. Related functions and variables:
|
|
//
|
|
// update_setupPrimaryEffect1()
|
|
// - Initialises unk29, unk30 and unk31
|
|
// - unk29 is not further modified
|
|
// - unk30 is not further modified, except by update_removePrimaryEffect1()
|
|
//
|
|
// update_removePrimaryEffect1()
|
|
// - Deinitialises unk30
|
|
//
|
|
// unk29 - determines how often the notes are played
|
|
// unk30 - modifies the frequency
|
|
// unk31 - determines how often the notes are played
|
|
|
|
void AdlibDriver::primaryEffect1(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "Calling primaryEffect1 (channel: %d)", _curChannel);
|
|
uint8 temp = channel.unk31;
|
|
channel.unk31 += channel.unk29;
|
|
if (channel.unk31 >= temp)
|
|
return;
|
|
|
|
// Initialise unk1 to the current frequency
|
|
uint16 unk1 = ((channel.regBx & 3) << 8) | channel.regAx;
|
|
|
|
// This is presumably to shift the "note on" bit so far to the left
|
|
// that it won't be affected by any of the calculations below.
|
|
uint16 unk2 = ((channel.regBx & 0x20) << 8) | (channel.regBx & 0x1C);
|
|
|
|
int16 unk3 = (int16)channel.unk30;
|
|
|
|
if (unk3 >= 0) {
|
|
unk1 += unk3;
|
|
if (unk1 >= 734) {
|
|
// The new frequency is too high. Shift it down and go
|
|
// up one octave.
|
|
unk1 >>= 1;
|
|
if (!(unk1 & 0x3FF))
|
|
++unk1;
|
|
unk2 = (unk2 & 0xFF00) | ((unk2 + 4) & 0xFF);
|
|
unk2 &= 0xFF1C;
|
|
}
|
|
} else {
|
|
unk1 += unk3;
|
|
if (unk1 < 388) {
|
|
// The new frequency is too low. Shift it up and go
|
|
// down one octave.
|
|
unk1 <<= 1;
|
|
if (!(unk1 & 0x3FF))
|
|
--unk1;
|
|
unk2 = (unk2 & 0xFF00) | ((unk2 - 4) & 0xFF);
|
|
unk2 &= 0xFF1C;
|
|
}
|
|
}
|
|
|
|
// Make sure that the new frequency is still a 10-bit value.
|
|
unk1 &= 0x3FF;
|
|
|
|
writeOPL(0xA0 + _curChannel, unk1 & 0xFF);
|
|
channel.regAx = unk1 & 0xFF;
|
|
|
|
// Shift down the "note on" bit again.
|
|
uint8 value = unk1 >> 8;
|
|
value |= (unk2 >> 8) & 0xFF;
|
|
value |= unk2 & 0xFF;
|
|
|
|
writeOPL(0xB0 + _curChannel, value);
|
|
channel.regBx = value;
|
|
}
|
|
|
|
// This is presumably only used for some sound effects, e.g. Malcolm entering
|
|
// and leaving Kallak's hut. Related functions and variables:
|
|
//
|
|
// update_setupPrimaryEffect2()
|
|
// - Initialises unk32, unk33, unk34, unk35 and unk36
|
|
// - unk32 is not further modified
|
|
// - unk33 is not further modified
|
|
// - unk34 is a countdown that gets reinitialised to unk35 on zero
|
|
// - unk35 is based on unk34 and not further modified
|
|
// - unk36 is not further modified
|
|
//
|
|
// noteOn()
|
|
// - Plays the current note
|
|
// - Updates unk37 with a new (lower?) frequency
|
|
// - Copies unk36 to unk38. The unk38 variable is a countdown.
|
|
//
|
|
// unk32 - determines how often the notes are played
|
|
// unk33 - modifies the frequency
|
|
// unk34 - countdown, updates frequency on zero
|
|
// unk35 - initialiser for unk34 countdown
|
|
// unk36 - initialiser for unk38 countdown
|
|
// unk37 - frequency
|
|
// unk38 - countdown, begins playing on zero
|
|
// unk41 - determines how often the notes are played
|
|
//
|
|
// Note that unk41 is never initialised. Not that it should matter much, but it
|
|
// is a bit sloppy.
|
|
|
|
void AdlibDriver::primaryEffect2(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "Calling primaryEffect2 (channel: %d)", _curChannel);
|
|
if (channel.unk38) {
|
|
--channel.unk38;
|
|
return;
|
|
}
|
|
|
|
uint8 temp = channel.unk41;
|
|
channel.unk41 += channel.unk32;
|
|
if (channel.unk41 < temp) {
|
|
uint16 unk1 = channel.unk37;
|
|
if (!(--channel.unk34)) {
|
|
unk1 ^= 0xFFFF;
|
|
++unk1;
|
|
channel.unk37 = unk1;
|
|
channel.unk34 = channel.unk35;
|
|
}
|
|
|
|
uint16 unk2 = (channel.regAx | (channel.regBx << 8)) & 0x3FF;
|
|
unk2 += unk1;
|
|
|
|
channel.regAx = unk2 & 0xFF;
|
|
channel.regBx = (channel.regBx & 0xFC) | (unk2 >> 8);
|
|
|
|
// Octave / F-Number / Key-On
|
|
writeOPL(0xA0 + _curChannel, channel.regAx);
|
|
writeOPL(0xB0 + _curChannel, channel.regBx);
|
|
}
|
|
}
|
|
|
|
// I don't know where this is used. The same operation is performed several
|
|
// times on the current channel, using a chunk of the _soundData[] buffer for
|
|
// parameters. The parameters are used starting at the end of the chunk.
|
|
//
|
|
// Since we use _curRegOffset to specify the final register, it's quite
|
|
// unlikely that this function is ever used to play notes. It's probably only
|
|
// used to modify the sound. Another thing that supports this idea is that it
|
|
// can be combined with any of the effects callbacks above.
|
|
//
|
|
// Related functions and variables:
|
|
//
|
|
// update_setupSecondaryEffect1()
|
|
// - Initialies unk18, unk19, unk20, unk21, unk22 and offset
|
|
// - unk19 is not further modified
|
|
// - unk20 is not further modified
|
|
// - unk22 is not further modified
|
|
// - offset is not further modified
|
|
//
|
|
// unk18 - determines how often the operation is performed
|
|
// unk19 - determines how often the operation is performed
|
|
// unk20 - the start index into the data chunk
|
|
// unk21 - the current index into the data chunk
|
|
// unk22 - the operation to perform
|
|
// offset - the offset to the data chunk
|
|
|
|
void AdlibDriver::secondaryEffect1(Channel &channel) {
|
|
debugC(9, kDebugLevelSound, "Calling secondaryEffect1 (channel: %d)", _curChannel);
|
|
uint8 temp = channel.unk18;
|
|
channel.unk18 += channel.unk19;
|
|
if (channel.unk18 < temp) {
|
|
if (--channel.unk21 < 0)
|
|
channel.unk21 = channel.unk20;
|
|
writeOPL(channel.unk22 + _curRegOffset, _soundData[channel.offset + channel.unk21]);
|
|
}
|
|
}
|
|
|
|
uint8 AdlibDriver::calculateOpLevel1(Channel &channel) {
|
|
int8 value = channel.opLevel1 & 0x3F;
|
|
|
|
if (channel.twoChan) {
|
|
value += channel.opExtraLevel1;
|
|
value += channel.opExtraLevel2;
|
|
value += channel.opExtraLevel3;
|
|
}
|
|
|
|
// Preserve the scaling level bits from opLevel1
|
|
|
|
return checkValue(value) | (channel.opLevel1 & 0xC0);
|
|
}
|
|
|
|
uint8 AdlibDriver::calculateOpLevel2(Channel &channel) {
|
|
int8 value = channel.opLevel2 & 0x3F;
|
|
|
|
value += channel.opExtraLevel1;
|
|
value += channel.opExtraLevel2;
|
|
value += channel.opExtraLevel3;
|
|
|
|
// Preserve the scaling level bits from opLevel2
|
|
|
|
return checkValue(value) | (channel.opLevel2 & 0xC0);
|
|
}
|
|
|
|
// parser opcodes
|
|
|
|
int AdlibDriver::update_setRepeat(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.repeatCounter = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_checkRepeat(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
++dataptr;
|
|
if (--channel.repeatCounter) {
|
|
int16 add = READ_LE_UINT16(dataptr - 2);
|
|
dataptr += add;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupProgram(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
if (value == 0xFF)
|
|
return 0;
|
|
|
|
uint8 *ptr = getProgram(value);
|
|
uint8 chan = *ptr++;
|
|
uint8 priority = *ptr++;
|
|
|
|
Channel &channel2 = _channels[chan];
|
|
|
|
if (priority >= channel2.priority) {
|
|
_flagTrigger = 1;
|
|
_flags |= 8;
|
|
initChannel(channel2);
|
|
channel2.priority = priority;
|
|
channel2.dataptr = ptr;
|
|
channel2.tempo = 0xFF;
|
|
channel2.position = 0xFF;
|
|
channel2.duration = 1;
|
|
unkOutput2(chan);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setNoteSpacing(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.spacing1 = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_jump(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
int16 add = READ_LE_UINT16(dataptr); dataptr += 2;
|
|
dataptr += add;
|
|
if (_syncJumpMask & (1 << (&channel - _channels)))
|
|
channel.lock = true;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_jumpToSubroutine(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
int16 add = READ_LE_UINT16(dataptr); dataptr += 2;
|
|
channel.dataptrStack[channel.dataptrStackPos++] = dataptr;
|
|
dataptr += add;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_returnFromSubroutine(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
dataptr = channel.dataptrStack[--channel.dataptrStackPos];
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setBaseOctave(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.baseOctave = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_stopChannel(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.priority = 0;
|
|
if (_curChannel != 9)
|
|
noteOff(channel);
|
|
dataptr = 0;
|
|
return 2;
|
|
}
|
|
|
|
int AdlibDriver::update_playRest(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
setupDuration(value, channel);
|
|
noteOff(channel);
|
|
return (value != 0);
|
|
}
|
|
|
|
int AdlibDriver::update_writeAdlib(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
writeOPL(value, *dataptr++);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupNoteAndDuration(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
setupNote(value, channel);
|
|
value = *dataptr++;
|
|
setupDuration(value, channel);
|
|
return (value != 0);
|
|
}
|
|
|
|
int AdlibDriver::update_setBaseNote(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.baseNote = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupSecondaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.unk18 = value;
|
|
channel.unk19 = value;
|
|
channel.unk20 = channel.unk21 = *dataptr++;
|
|
channel.unk22 = *dataptr++;
|
|
channel.offset = READ_LE_UINT16(dataptr); dataptr += 2;
|
|
channel.secondaryEffect = &AdlibDriver::secondaryEffect1;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_stopOtherChannel(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
Channel &channel2 = _channels[value];
|
|
channel2.duration = 0;
|
|
channel2.priority = 0;
|
|
channel2.dataptr = 0;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_waitForEndOfProgram(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
uint8 *ptr = getProgram(value);
|
|
uint8 chan = *ptr;
|
|
|
|
if (!_channels[chan].dataptr)
|
|
return 0;
|
|
|
|
dataptr -= 2;
|
|
return 2;
|
|
}
|
|
|
|
int AdlibDriver::update_setupInstrument(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
setupInstrument(_curRegOffset, getInstrument(value), channel);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupPrimaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.unk29 = value;
|
|
channel.unk30 = READ_BE_UINT16(dataptr);
|
|
dataptr += 2;
|
|
channel.primaryEffect = &AdlibDriver::primaryEffect1;
|
|
channel.unk31 = 0xFF;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_removePrimaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
channel.primaryEffect = 0;
|
|
channel.unk30 = 0;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setBaseFreq(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.baseFreq = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupPrimaryEffect2(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.unk32 = value;
|
|
channel.unk33 = *dataptr++;
|
|
uint8 temp = *dataptr++;
|
|
channel.unk34 = temp + 1;
|
|
channel.unk35 = temp << 1;
|
|
channel.unk36 = *dataptr++;
|
|
channel.primaryEffect = &AdlibDriver::primaryEffect2;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setPriority(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.priority = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback23(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
value >>= 1;
|
|
_unkValue1 = _unkValue2 = value;
|
|
_unkValue3 = 0xFF;
|
|
_unkValue4 = _unkValue5 = 0;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback24(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
if (_unkValue5) {
|
|
if (_unkValue4 & value) {
|
|
_unkValue5 = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (!(value & _unkValue4))
|
|
++_unkValue5;
|
|
|
|
dataptr -= 2;
|
|
channel.duration = 1;
|
|
return 2;
|
|
}
|
|
|
|
int AdlibDriver::update_setExtraLevel1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.opExtraLevel1 = value;
|
|
adjustVolume(channel);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupDuration(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
setupDuration(value, channel);
|
|
return (value != 0);
|
|
}
|
|
|
|
int AdlibDriver::update_playNote(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
setupDuration(value, channel);
|
|
noteOn(channel);
|
|
return (value != 0);
|
|
}
|
|
|
|
int AdlibDriver::update_setFractionalNoteSpacing(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.fractionalSpacing = value & 7;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setTempo(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
_tempo = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_removeSecondaryEffect1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
channel.secondaryEffect = 0;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setChannelTempo(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.tempo = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setExtraLevel3(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.opExtraLevel3 = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setExtraLevel2(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
int channelBackUp = _curChannel;
|
|
|
|
_curChannel = value;
|
|
Channel &channel2 = _channels[value];
|
|
channel2.opExtraLevel2 = *dataptr++;
|
|
adjustVolume(channel2);
|
|
|
|
_curChannel = channelBackUp;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_changeExtraLevel2(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
int channelBackUp = _curChannel;
|
|
|
|
_curChannel = value;
|
|
Channel &channel2 = _channels[value];
|
|
channel2.opExtraLevel2 += *dataptr++;
|
|
adjustVolume(channel2);
|
|
|
|
_curChannel = channelBackUp;
|
|
return 0;
|
|
}
|
|
|
|
// Apart from initialising to zero, these two functions are the only ones that
|
|
// modify _vibratoAndAMDepthBits.
|
|
|
|
int AdlibDriver::update_setAMDepth(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
if (value & 1)
|
|
_vibratoAndAMDepthBits |= 0x80;
|
|
else
|
|
_vibratoAndAMDepthBits &= 0x7F;
|
|
|
|
writeOPL(0xBD, _vibratoAndAMDepthBits);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setVibratoDepth(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
if (value & 1)
|
|
_vibratoAndAMDepthBits |= 0x40;
|
|
else
|
|
_vibratoAndAMDepthBits &= 0xBF;
|
|
|
|
writeOPL(0xBD, _vibratoAndAMDepthBits);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_changeExtraLevel1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.opExtraLevel1 += value;
|
|
adjustVolume(channel);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback38(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
int channelBackUp = _curChannel;
|
|
|
|
_curChannel = value;
|
|
Channel &channel2 = _channels[value];
|
|
channel2.duration = channel2.priority = 0;
|
|
channel2.dataptr = 0;
|
|
channel2.opExtraLevel2 = 0;
|
|
|
|
if (value != 9) {
|
|
uint8 outValue = _regOffset[value];
|
|
|
|
// Feedback strength / Connection type
|
|
writeOPL(0xC0 + _curChannel, 0x00);
|
|
|
|
// Key scaling level / Operator output level
|
|
writeOPL(0x43 + outValue, 0x3F);
|
|
|
|
// Sustain Level / Release Rate
|
|
writeOPL(0x83 + outValue, 0xFF);
|
|
|
|
// Key On / Octave / Frequency
|
|
writeOPL(0xB0 + _curChannel, 0x00);
|
|
}
|
|
|
|
_curChannel = channelBackUp;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback39(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
uint16 unk = *dataptr++;
|
|
unk |= value << 8;
|
|
unk &= getRandomNr();
|
|
|
|
uint16 unk2 = ((channel.regBx & 0x1F) << 8) | channel.regAx;
|
|
unk2 += unk;
|
|
unk2 |= ((channel.regBx & 0x20) << 8);
|
|
|
|
// Frequency
|
|
writeOPL(0xA0 + _curChannel, unk2 & 0xFF);
|
|
|
|
// Key On / Octave / Frequency
|
|
writeOPL(0xB0 + _curChannel, (unk2 & 0xFF00) >> 8);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_removePrimaryEffect2(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
channel.primaryEffect = 0;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback41(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.unk16 = value;
|
|
setupNote(channel.rawNote, channel, true);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_resetToGlobalTempo(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
channel.tempo = _tempo;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_nop1(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setDurationRandomness(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.durationRandomness = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_changeChannelTempo(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
int tempo = channel.tempo + (int8)value;
|
|
|
|
if (tempo <= 0)
|
|
tempo = 1;
|
|
else if (tempo > 255)
|
|
tempo = 255;
|
|
|
|
channel.tempo = tempo;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback46(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
uint8 entry = *dataptr++;
|
|
_tablePtr1 = _unkTable2[entry++];
|
|
_tablePtr2 = _unkTable2[entry];
|
|
if (value == 2) {
|
|
// Frequency
|
|
writeOPL(0xA0, _tablePtr2[0]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// TODO: This is really the same as update_nop1(), so they should be combined
|
|
// into one single update_nop().
|
|
|
|
int AdlibDriver::update_nop2(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setupRhythmSection(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
int channelBackUp = _curChannel;
|
|
int regOffsetBackUp = _curRegOffset;
|
|
|
|
_curChannel = 6;
|
|
_curRegOffset = _regOffset[6];
|
|
|
|
setupInstrument(_curRegOffset, getInstrument(value), channel);
|
|
_unkValue6 = channel.opLevel2;
|
|
|
|
_curChannel = 7;
|
|
_curRegOffset = _regOffset[7];
|
|
|
|
setupInstrument(_curRegOffset, getInstrument(*dataptr++), channel);
|
|
_unkValue7 = channel.opLevel1;
|
|
_unkValue8 = channel.opLevel2;
|
|
|
|
_curChannel = 8;
|
|
_curRegOffset = _regOffset[8];
|
|
|
|
setupInstrument(_curRegOffset, getInstrument(*dataptr++), channel);
|
|
_unkValue9 = channel.opLevel1;
|
|
_unkValue10 = channel.opLevel2;
|
|
|
|
// Octave / F-Number / Key-On for channels 6, 7 and 8
|
|
|
|
_channels[6].regBx = *dataptr++ & 0x2F;
|
|
writeOPL(0xB6, _channels[6].regBx);
|
|
writeOPL(0xA6, *dataptr++);
|
|
|
|
_channels[7].regBx = *dataptr++ & 0x2F;
|
|
writeOPL(0xB7, _channels[7].regBx);
|
|
writeOPL(0xA7, *dataptr++);
|
|
|
|
_channels[8].regBx = *dataptr++ & 0x2F;
|
|
writeOPL(0xB8, _channels[8].regBx);
|
|
writeOPL(0xA8, *dataptr++);
|
|
|
|
_rhythmSectionBits = 0x20;
|
|
|
|
_curRegOffset = regOffsetBackUp;
|
|
_curChannel = channelBackUp;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_playRhythmSection(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
// Any instrument that we want to play, and which was already playing,
|
|
// is temporarily keyed off. Instruments that were off already, or
|
|
// which we don't want to play, retain their old on/off status. This is
|
|
// probably so that the instrument's envelope is played from its
|
|
// beginning again...
|
|
|
|
writeOPL(0xBD, (_rhythmSectionBits & ~(value & 0x1F)) | 0x20);
|
|
|
|
// ...but since we only set the rhythm instrument bits, and never clear
|
|
// them (until the entire rhythm section is disabled), I'm not sure how
|
|
// useful the cleverness above is. We could perhaps simply turn off all
|
|
// the rhythm instruments instead.
|
|
|
|
_rhythmSectionBits |= value;
|
|
|
|
writeOPL(0xBD, _vibratoAndAMDepthBits | 0x20 | _rhythmSectionBits);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_removeRhythmSection(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
--dataptr;
|
|
_rhythmSectionBits = 0;
|
|
|
|
// All the rhythm bits are cleared. The AM and Vibrato depth bits
|
|
// remain unchanged.
|
|
|
|
writeOPL(0xBD, _vibratoAndAMDepthBits);
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback51(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
uint8 value2 = *dataptr++;
|
|
|
|
if (value & 1) {
|
|
_unkValue12 = value2;
|
|
|
|
// Channel 7, op1: Level Key Scaling / Total Level
|
|
writeOPL(0x51, checkValue(value2 + _unkValue7 + _unkValue11 + _unkValue12));
|
|
}
|
|
|
|
if (value & 2) {
|
|
_unkValue14 = value2;
|
|
|
|
// Channel 8, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x55, checkValue(value2 + _unkValue10 + _unkValue13 + _unkValue14));
|
|
}
|
|
|
|
if (value & 4) {
|
|
_unkValue15 = value2;
|
|
|
|
// Channel 8, op1: Level Key Scaling / Total Level
|
|
writeOPL(0x52, checkValue(value2 + _unkValue9 + _unkValue16 + _unkValue15));
|
|
}
|
|
|
|
if (value & 8) {
|
|
_unkValue18 = value2;
|
|
|
|
// Channel 7, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x54, checkValue(value2 + _unkValue8 + _unkValue17 + _unkValue18));
|
|
}
|
|
|
|
if (value & 16) {
|
|
_unkValue20 = value2;
|
|
|
|
// Channel 6, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x53, checkValue(value2 + _unkValue6 + _unkValue19 + _unkValue20));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback52(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
uint8 value2 = *dataptr++;
|
|
|
|
if (value & 1) {
|
|
_unkValue11 = checkValue(value2 + _unkValue7 + _unkValue11 + _unkValue12);
|
|
|
|
// Channel 7, op1: Level Key Scaling / Total Level
|
|
writeOPL(0x51, _unkValue11);
|
|
}
|
|
|
|
if (value & 2) {
|
|
_unkValue13 = checkValue(value2 + _unkValue10 + _unkValue13 + _unkValue14);
|
|
|
|
// Channel 8, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x55, _unkValue13);
|
|
}
|
|
|
|
if (value & 4) {
|
|
_unkValue16 = checkValue(value2 + _unkValue9 + _unkValue16 + _unkValue15);
|
|
|
|
// Channel 8, op1: Level Key Scaling / Total Level
|
|
writeOPL(0x52, _unkValue16);
|
|
}
|
|
|
|
if (value & 8) {
|
|
_unkValue17 = checkValue(value2 + _unkValue8 + _unkValue17 + _unkValue18);
|
|
|
|
// Channel 7, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x54, _unkValue17);
|
|
}
|
|
|
|
if (value & 16) {
|
|
_unkValue19 = checkValue(value2 + _unkValue6 + _unkValue19 + _unkValue20);
|
|
|
|
// Channel 6, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x53, _unkValue19);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback53(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
uint8 value2 = *dataptr++;
|
|
|
|
if (value & 1) {
|
|
_unkValue11 = value2;
|
|
|
|
// Channel 7, op1: Level Key Scaling / Total Level
|
|
writeOPL(0x51, checkValue(value2 + _unkValue7 + _unkValue12));
|
|
}
|
|
|
|
if (value & 2) {
|
|
_unkValue13 = value2;
|
|
|
|
// Channel 8, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x55, checkValue(value2 + _unkValue10 + _unkValue14));
|
|
}
|
|
|
|
if (value & 4) {
|
|
_unkValue16 = value2;
|
|
|
|
// Channel 8, op1: Level Key Scaling / Total Level
|
|
writeOPL(0x52, checkValue(value2 + _unkValue9 + _unkValue15));
|
|
}
|
|
|
|
if (value & 8) {
|
|
_unkValue17 = value2;
|
|
|
|
// Channel 7, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x54, checkValue(value2 + _unkValue8 + _unkValue18));
|
|
}
|
|
|
|
if (value & 16) {
|
|
_unkValue19 = value2;
|
|
|
|
// Channel 6, op2: Level Key Scaling / Total Level
|
|
writeOPL(0x53, checkValue(value2 + _unkValue6 + _unkValue20));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setSoundTrigger(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
_soundTrigger = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::update_setTempoReset(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.tempoReset = value;
|
|
return 0;
|
|
}
|
|
|
|
int AdlibDriver::updateCallback56(uint8 *&dataptr, Channel &channel, uint8 value) {
|
|
channel.unk39 = value;
|
|
channel.unk40 = *dataptr++;
|
|
return 0;
|
|
}
|
|
|
|
// static res
|
|
|
|
#define COMMAND(x) { &AdlibDriver::x, #x }
|
|
|
|
void AdlibDriver::setupOpcodeList() {
|
|
static const OpcodeEntry opcodeList[] = {
|
|
COMMAND(snd_ret0x100),
|
|
COMMAND(snd_ret0x1983),
|
|
COMMAND(snd_initDriver),
|
|
COMMAND(snd_deinitDriver),
|
|
COMMAND(snd_setSoundData),
|
|
COMMAND(snd_unkOpcode1),
|
|
COMMAND(snd_startSong),
|
|
COMMAND(snd_unkOpcode2),
|
|
COMMAND(snd_unkOpcode3),
|
|
COMMAND(snd_readByte),
|
|
COMMAND(snd_writeByte),
|
|
COMMAND(snd_getSoundTrigger),
|
|
COMMAND(snd_unkOpcode4),
|
|
COMMAND(snd_dummy),
|
|
COMMAND(snd_getNullvar4),
|
|
COMMAND(snd_setNullvar3),
|
|
COMMAND(snd_setFlag),
|
|
COMMAND(snd_clearFlag)
|
|
};
|
|
|
|
_opcodeList = opcodeList;
|
|
_opcodesEntries = ARRAYSIZE(opcodeList);
|
|
}
|
|
|
|
void AdlibDriver::setupParserOpcodeTable() {
|
|
static const ParserOpcode parserOpcodeTable[] = {
|
|
// 0
|
|
COMMAND(update_setRepeat),
|
|
COMMAND(update_checkRepeat),
|
|
COMMAND(update_setupProgram),
|
|
COMMAND(update_setNoteSpacing),
|
|
|
|
// 4
|
|
COMMAND(update_jump),
|
|
COMMAND(update_jumpToSubroutine),
|
|
COMMAND(update_returnFromSubroutine),
|
|
COMMAND(update_setBaseOctave),
|
|
|
|
// 8
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_playRest),
|
|
COMMAND(update_writeAdlib),
|
|
COMMAND(update_setupNoteAndDuration),
|
|
|
|
// 12
|
|
COMMAND(update_setBaseNote),
|
|
COMMAND(update_setupSecondaryEffect1),
|
|
COMMAND(update_stopOtherChannel),
|
|
COMMAND(update_waitForEndOfProgram),
|
|
|
|
// 16
|
|
COMMAND(update_setupInstrument),
|
|
COMMAND(update_setupPrimaryEffect1),
|
|
COMMAND(update_removePrimaryEffect1),
|
|
COMMAND(update_setBaseFreq),
|
|
|
|
// 20
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_setupPrimaryEffect2),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_stopChannel),
|
|
|
|
// 24
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_setPriority),
|
|
COMMAND(update_stopChannel),
|
|
|
|
// 28
|
|
COMMAND(updateCallback23),
|
|
COMMAND(updateCallback24),
|
|
COMMAND(update_setExtraLevel1),
|
|
COMMAND(update_stopChannel),
|
|
|
|
// 32
|
|
COMMAND(update_setupDuration),
|
|
COMMAND(update_playNote),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_stopChannel),
|
|
|
|
// 36
|
|
COMMAND(update_setFractionalNoteSpacing),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_setTempo),
|
|
COMMAND(update_removeSecondaryEffect1),
|
|
|
|
// 40
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_setChannelTempo),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_setExtraLevel3),
|
|
|
|
// 44
|
|
COMMAND(update_setExtraLevel2),
|
|
COMMAND(update_changeExtraLevel2),
|
|
COMMAND(update_setAMDepth),
|
|
COMMAND(update_setVibratoDepth),
|
|
|
|
// 48
|
|
COMMAND(update_changeExtraLevel1),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(updateCallback38),
|
|
|
|
// 52
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(updateCallback39),
|
|
COMMAND(update_removePrimaryEffect2),
|
|
COMMAND(update_stopChannel),
|
|
|
|
// 56
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(updateCallback41),
|
|
COMMAND(update_resetToGlobalTempo),
|
|
COMMAND(update_nop1),
|
|
|
|
// 60
|
|
COMMAND(update_setDurationRandomness),
|
|
COMMAND(update_changeChannelTempo),
|
|
COMMAND(update_stopChannel),
|
|
COMMAND(updateCallback46),
|
|
|
|
// 64
|
|
COMMAND(update_nop2),
|
|
COMMAND(update_setupRhythmSection),
|
|
COMMAND(update_playRhythmSection),
|
|
COMMAND(update_removeRhythmSection),
|
|
|
|
// 68
|
|
COMMAND(updateCallback51),
|
|
COMMAND(updateCallback52),
|
|
COMMAND(updateCallback53),
|
|
COMMAND(update_setSoundTrigger),
|
|
|
|
// 72
|
|
COMMAND(update_setTempoReset),
|
|
COMMAND(updateCallback56),
|
|
COMMAND(update_stopChannel)
|
|
};
|
|
|
|
_parserOpcodeTable = parserOpcodeTable;
|
|
_parserOpcodeTableSize = ARRAYSIZE(parserOpcodeTable);
|
|
}
|
|
#undef COMMAND
|
|
|
|
// This table holds the register offset for operator 1 for each of the nine
|
|
// channels. To get the register offset for operator 2, simply add 3.
|
|
|
|
const uint8 AdlibDriver::_regOffset[] = {
|
|
0x00, 0x01, 0x02, 0x08, 0x09, 0x0A, 0x10, 0x11,
|
|
0x12
|
|
};
|
|
|
|
// Given the size of this table, and the range of its values, it's probably the
|
|
// F-Numbers (10 bits) for the notes of the 12-tone scale. However, it does not
|
|
// match the table in the Adlib documentation I've seen.
|
|
|
|
const uint16 AdlibDriver::_unkTable[] = {
|
|
0x0134, 0x0147, 0x015A, 0x016F, 0x0184, 0x019C, 0x01B4, 0x01CE, 0x01E9,
|
|
0x0207, 0x0225, 0x0246
|
|
};
|
|
|
|
// These tables are currently only used by updateCallback46(), which only ever
|
|
// uses the first element of one of the sub-tables.
|
|
|
|
const uint8 *AdlibDriver::_unkTable2[] = {
|
|
AdlibDriver::_unkTable2_1,
|
|
AdlibDriver::_unkTable2_2,
|
|
AdlibDriver::_unkTable2_1,
|
|
AdlibDriver::_unkTable2_2,
|
|
AdlibDriver::_unkTable2_3,
|
|
AdlibDriver::_unkTable2_2
|
|
};
|
|
|
|
const uint8 AdlibDriver::_unkTable2_1[] = {
|
|
0x50, 0x50, 0x4F, 0x4F, 0x4E, 0x4E, 0x4D, 0x4D,
|
|
0x4C, 0x4C, 0x4B, 0x4B, 0x4A, 0x4A, 0x49, 0x49,
|
|
0x48, 0x48, 0x47, 0x47, 0x46, 0x46, 0x45, 0x45,
|
|
0x44, 0x44, 0x43, 0x43, 0x42, 0x42, 0x41, 0x41,
|
|
0x40, 0x40, 0x3F, 0x3F, 0x3E, 0x3E, 0x3D, 0x3D,
|
|
0x3C, 0x3C, 0x3B, 0x3B, 0x3A, 0x3A, 0x39, 0x39,
|
|
0x38, 0x38, 0x37, 0x37, 0x36, 0x36, 0x35, 0x35,
|
|
0x34, 0x34, 0x33, 0x33, 0x32, 0x32, 0x31, 0x31,
|
|
0x30, 0x30, 0x2F, 0x2F, 0x2E, 0x2E, 0x2D, 0x2D,
|
|
0x2C, 0x2C, 0x2B, 0x2B, 0x2A, 0x2A, 0x29, 0x29,
|
|
0x28, 0x28, 0x27, 0x27, 0x26, 0x26, 0x25, 0x25,
|
|
0x24, 0x24, 0x23, 0x23, 0x22, 0x22, 0x21, 0x21,
|
|
0x20, 0x20, 0x1F, 0x1F, 0x1E, 0x1E, 0x1D, 0x1D,
|
|
0x1C, 0x1C, 0x1B, 0x1B, 0x1A, 0x1A, 0x19, 0x19,
|
|
0x18, 0x18, 0x17, 0x17, 0x16, 0x16, 0x15, 0x15,
|
|
0x14, 0x14, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11,
|
|
0x10, 0x10
|
|
};
|
|
|
|
// no don't ask me WHY this table exsits!
|
|
const uint8 AdlibDriver::_unkTable2_2[] = {
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
|
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
|
|
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
|
|
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
|
|
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
|
|
0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
|
|
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
|
|
0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
|
|
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
|
|
0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x6F,
|
|
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
|
|
0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
|
|
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
|
|
0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F
|
|
};
|
|
|
|
const uint8 AdlibDriver::_unkTable2_3[] = {
|
|
0x40, 0x40, 0x40, 0x3F, 0x3F, 0x3F, 0x3E, 0x3E,
|
|
0x3E, 0x3D, 0x3D, 0x3D, 0x3C, 0x3C, 0x3C, 0x3B,
|
|
0x3B, 0x3B, 0x3A, 0x3A, 0x3A, 0x39, 0x39, 0x39,
|
|
0x38, 0x38, 0x38, 0x37, 0x37, 0x37, 0x36, 0x36,
|
|
0x36, 0x35, 0x35, 0x35, 0x34, 0x34, 0x34, 0x33,
|
|
0x33, 0x33, 0x32, 0x32, 0x32, 0x31, 0x31, 0x31,
|
|
0x30, 0x30, 0x30, 0x2F, 0x2F, 0x2F, 0x2E, 0x2E,
|
|
0x2E, 0x2D, 0x2D, 0x2D, 0x2C, 0x2C, 0x2C, 0x2B,
|
|
0x2B, 0x2B, 0x2A, 0x2A, 0x2A, 0x29, 0x29, 0x29,
|
|
0x28, 0x28, 0x28, 0x27, 0x27, 0x27, 0x26, 0x26,
|
|
0x26, 0x25, 0x25, 0x25, 0x24, 0x24, 0x24, 0x23,
|
|
0x23, 0x23, 0x22, 0x22, 0x22, 0x21, 0x21, 0x21,
|
|
0x20, 0x20, 0x20, 0x1F, 0x1F, 0x1F, 0x1E, 0x1E,
|
|
0x1E, 0x1D, 0x1D, 0x1D, 0x1C, 0x1C, 0x1C, 0x1B,
|
|
0x1B, 0x1B, 0x1A, 0x1A, 0x1A, 0x19, 0x19, 0x19,
|
|
0x18, 0x18, 0x18, 0x17, 0x17, 0x17, 0x16, 0x16,
|
|
0x16, 0x15
|
|
};
|
|
|
|
// This table is used to modify the frequency of the notes, depending on the
|
|
// note value and unk16. In theory, we could very well try to access memory
|
|
// outside this table, but in reality that probably won't happen.
|
|
//
|
|
// This could be some sort of pitch bend, but I have yet to see it used for
|
|
// anything so it's hard to say.
|
|
|
|
const uint8 AdlibDriver::_unkTables[][32] = {
|
|
// 0
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x08,
|
|
0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
|
|
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x19,
|
|
0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21 },
|
|
// 1
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x06, 0x07, 0x09,
|
|
0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11,
|
|
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x1A,
|
|
0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x22, 0x24 },
|
|
// 2
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x06, 0x08, 0x09,
|
|
0x0A, 0x0C, 0x0D, 0x0E, 0x0F, 0x11, 0x12, 0x13,
|
|
0x14, 0x15, 0x16, 0x17, 0x19, 0x1A, 0x1C, 0x1D,
|
|
0x1E, 0x1F, 0x20, 0x21, 0x22, 0x24, 0x25, 0x26 },
|
|
// 3
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x06, 0x08, 0x0A,
|
|
0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x11, 0x12, 0x13,
|
|
0x14, 0x15, 0x16, 0x17, 0x18, 0x1A, 0x1C, 0x1D,
|
|
0x1E, 0x1F, 0x20, 0x21, 0x23, 0x25, 0x27, 0x28 },
|
|
// 4
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x06, 0x08, 0x0A,
|
|
0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x11, 0x13, 0x15,
|
|
0x16, 0x17, 0x18, 0x19, 0x1B, 0x1D, 0x1F, 0x20,
|
|
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x28, 0x2A },
|
|
// 5
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x05, 0x07, 0x09, 0x0B,
|
|
0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x13, 0x15,
|
|
0x16, 0x17, 0x18, 0x19, 0x1B, 0x1D, 0x1F, 0x20,
|
|
0x21, 0x22, 0x23, 0x25, 0x27, 0x29, 0x2B, 0x2D },
|
|
// 6
|
|
{ 0x00, 0x01, 0x02, 0x03, 0x05, 0x07, 0x09, 0x0B,
|
|
0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x13, 0x15,
|
|
0x16, 0x17, 0x18, 0x1A, 0x1C, 0x1E, 0x21, 0x24,
|
|
0x25, 0x26, 0x27, 0x29, 0x2B, 0x2D, 0x2F, 0x30 },
|
|
// 7
|
|
{ 0x00, 0x01, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C,
|
|
0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x13, 0x15, 0x18,
|
|
0x19, 0x1A, 0x1C, 0x1D, 0x1F, 0x21, 0x23, 0x25,
|
|
0x26, 0x27, 0x29, 0x2B, 0x2D, 0x2F, 0x30, 0x32 },
|
|
// 8
|
|
{ 0x00, 0x01, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0D,
|
|
0x0E, 0x0F, 0x10, 0x11, 0x12, 0x14, 0x17, 0x1A,
|
|
0x19, 0x1A, 0x1C, 0x1E, 0x20, 0x22, 0x25, 0x28,
|
|
0x29, 0x2A, 0x2B, 0x2D, 0x2F, 0x31, 0x33, 0x35 },
|
|
// 9
|
|
{ 0x00, 0x01, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0E,
|
|
0x0F, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1B,
|
|
0x1C, 0x1D, 0x1E, 0x20, 0x22, 0x24, 0x26, 0x29,
|
|
0x2A, 0x2C, 0x2E, 0x30, 0x32, 0x34, 0x36, 0x39 },
|
|
// 10
|
|
{ 0x00, 0x01, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0E,
|
|
0x0F, 0x10, 0x12, 0x14, 0x16, 0x19, 0x1B, 0x1E,
|
|
0x1F, 0x21, 0x23, 0x25, 0x27, 0x29, 0x2B, 0x2D,
|
|
0x2E, 0x2F, 0x31, 0x32, 0x34, 0x36, 0x39, 0x3C },
|
|
// 11
|
|
{ 0x00, 0x01, 0x03, 0x05, 0x07, 0x0A, 0x0C, 0x0F,
|
|
0x10, 0x11, 0x13, 0x15, 0x17, 0x19, 0x1B, 0x1E,
|
|
0x1F, 0x20, 0x22, 0x24, 0x26, 0x28, 0x2B, 0x2E,
|
|
0x2F, 0x30, 0x32, 0x34, 0x36, 0x39, 0x3C, 0x3F },
|
|
// 12
|
|
{ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0B, 0x0D, 0x10,
|
|
0x11, 0x12, 0x14, 0x16, 0x18, 0x1B, 0x1E, 0x21,
|
|
0x22, 0x23, 0x25, 0x27, 0x29, 0x2C, 0x2F, 0x32,
|
|
0x33, 0x34, 0x36, 0x38, 0x3B, 0x34, 0x41, 0x44 },
|
|
// 13
|
|
{ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0B, 0x0D, 0x11,
|
|
0x12, 0x13, 0x15, 0x17, 0x1A, 0x1D, 0x20, 0x23,
|
|
0x24, 0x25, 0x27, 0x29, 0x2C, 0x2F, 0x32, 0x35,
|
|
0x36, 0x37, 0x39, 0x3B, 0x3E, 0x41, 0x44, 0x47 }
|
|
};
|
|
|
|
#pragma mark -
|
|
|
|
// Kyra 1 sound triggers. Most noticeably, these are used towards the end of
|
|
// the game, in the castle, to cycle between different songs. The same music is
|
|
// used in other places throughout the game, but the player is less likely to
|
|
// spend enough time there to notice.
|
|
|
|
const int SoundAdlibPC::_kyra1SoundTriggers[] = {
|
|
0, 4, 5, 3
|
|
};
|
|
|
|
const int SoundAdlibPC::_kyra1NumSoundTriggers = ARRAYSIZE(SoundAdlibPC::_kyra1SoundTriggers);
|
|
|
|
SoundAdlibPC::SoundAdlibPC(KyraEngine *vm, Audio::Mixer *mixer)
|
|
: Sound(vm, mixer), _driver(0), _trackEntries(), _soundDataPtr(0) {
|
|
memset(_trackEntries, 0, sizeof(_trackEntries));
|
|
_v2 = (_vm->gameFlags().gameID == GI_KYRA2);
|
|
_driver = new AdlibDriver(mixer, _v2);
|
|
assert(_driver);
|
|
|
|
_sfxPlayingSound = -1;
|
|
_soundFileLoaded = (uint)-1;
|
|
|
|
if (_v2) {
|
|
// TODO: Figure out if Kyra 2 uses sound triggers at all.
|
|
_soundTriggers = 0;
|
|
_numSoundTriggers = 0;
|
|
} else {
|
|
_soundTriggers = _kyra1SoundTriggers;
|
|
_numSoundTriggers = _kyra1NumSoundTriggers;
|
|
}
|
|
}
|
|
|
|
SoundAdlibPC::~SoundAdlibPC() {
|
|
delete [] _soundDataPtr;
|
|
delete _driver;
|
|
}
|
|
|
|
bool SoundAdlibPC::init() {
|
|
_driver->callback(2);
|
|
_driver->callback(16, int(4));
|
|
return true;
|
|
}
|
|
|
|
void SoundAdlibPC::process() {
|
|
uint8 trigger = _driver->callback(11);
|
|
|
|
if (trigger < _numSoundTriggers) {
|
|
int soundId = _soundTriggers[trigger];
|
|
|
|
if (soundId)
|
|
playTrack(soundId);
|
|
} else {
|
|
warning("Unknown sound trigger %d", trigger);
|
|
// TODO: At this point, we really want to clear the trigger...
|
|
}
|
|
}
|
|
|
|
void SoundAdlibPC::setVolume(int volume) {
|
|
}
|
|
|
|
int SoundAdlibPC::getVolume() {
|
|
return 0;
|
|
}
|
|
|
|
void SoundAdlibPC::playTrack(uint8 track) {
|
|
if (_musicEnabled) {
|
|
// WORKAROUND: There is a bug in the Kyra 1 "Pool of Sorrow"
|
|
// music which causes the channels to get progressively out of
|
|
// sync for each loop. To avoid that, we declare that all four
|
|
// of the song channels have to jump "in sync".
|
|
|
|
if (track == 4 && scumm_stricmp(soundFilename(_soundFileLoaded), "KYRA1B") == 0)
|
|
_driver->setSyncJumpMask(0x000F);
|
|
else
|
|
_driver->setSyncJumpMask(0);
|
|
play(track);
|
|
}
|
|
}
|
|
|
|
void SoundAdlibPC::haltTrack() {
|
|
unk1();
|
|
unk2();
|
|
//_vm->_system->delayMillis(3 * 60);
|
|
}
|
|
|
|
void SoundAdlibPC::playSoundEffect(uint8 track) {
|
|
if (_sfxEnabled)
|
|
play(track);
|
|
}
|
|
|
|
void SoundAdlibPC::play(uint8 track) {
|
|
uint16 soundId = 0;
|
|
|
|
if (_v2)
|
|
soundId = READ_LE_UINT16(&_trackEntries[track<<1]);
|
|
else
|
|
soundId = _trackEntries[track];
|
|
|
|
if ((soundId == 0xFFFF && _v2) || (soundId == 0xFF && !_v2) || !_soundDataPtr)
|
|
return;
|
|
|
|
while ((_driver->callback(16, 0) & 8)) {
|
|
// We call the system delay and not the game delay to avoid concurrency issues.
|
|
_vm->_system->delayMillis(10);
|
|
}
|
|
|
|
if (_sfxPlayingSound != -1) {
|
|
// Restore the sounds's normal values.
|
|
_driver->callback(10, _sfxPlayingSound, int(1), int(_sfxPriority));
|
|
_driver->callback(10, _sfxPlayingSound, int(3), int(_sfxFourthByteOfSong));
|
|
_sfxPlayingSound = -1;
|
|
}
|
|
|
|
int chan = _driver->callback(9, soundId, int(0));
|
|
|
|
if (chan != 9) {
|
|
_sfxPlayingSound = soundId;
|
|
_sfxPriority = _driver->callback(9, soundId, int(1));
|
|
_sfxFourthByteOfSong = _driver->callback(9, soundId, int(3));
|
|
|
|
// In the cases I've seen, the mysterious fourth byte has been
|
|
// the parameter for the update_setExtraLevel3() callback.
|
|
//
|
|
// The extra level is part of the channels "total level", which
|
|
// is a six-bit value where larger values means softer volume.
|
|
//
|
|
// So what seems to be happening here is that sounds which are
|
|
// started by this function are given a slightly lower priority
|
|
// and a slightly higher (i.e. softer) extra level 3 than they
|
|
// would have if they were started from anywhere else. Strange.
|
|
|
|
int newVal = ((((-_sfxFourthByteOfSong) + 63) * 0xFF) >> 8) & 0xFF;
|
|
newVal = -newVal + 63;
|
|
_driver->callback(10, soundId, int(3), newVal);
|
|
newVal = ((_sfxPriority * 0xFF) >> 8) & 0xFF;
|
|
_driver->callback(10, soundId, int(1), newVal);
|
|
}
|
|
|
|
_driver->callback(6, soundId);
|
|
}
|
|
|
|
void SoundAdlibPC::beginFadeOut() {
|
|
playSoundEffect(1);
|
|
}
|
|
|
|
void SoundAdlibPC::loadSoundFile(uint file) {
|
|
if (_soundFileLoaded == file)
|
|
return;
|
|
|
|
if (_soundDataPtr)
|
|
haltTrack();
|
|
|
|
uint8 *file_data = 0; uint32 file_size = 0;
|
|
|
|
char filename[25];
|
|
sprintf(filename, "%s.ADL", soundFilename(file));
|
|
|
|
file_data = _vm->resource()->fileData(filename, &file_size);
|
|
if (!file_data) {
|
|
warning("Couldn't find music file: '%s'", filename);
|
|
return;
|
|
}
|
|
|
|
unk2();
|
|
unk1();
|
|
|
|
_driver->callback(8, int(-1));
|
|
_soundDataPtr = 0;
|
|
|
|
int soundDataSize = file_size;
|
|
uint8 *p = file_data;
|
|
|
|
if (_v2) {
|
|
memcpy(_trackEntries, p, 500);
|
|
p += 500;
|
|
soundDataSize -= 500;
|
|
} else {
|
|
memcpy(_trackEntries, p, 120);
|
|
p += 120;
|
|
soundDataSize -= 120;
|
|
}
|
|
|
|
_soundDataPtr = new uint8[soundDataSize];
|
|
assert(_soundDataPtr);
|
|
|
|
memcpy(_soundDataPtr, p, soundDataSize*sizeof(uint8));
|
|
|
|
delete [] file_data;
|
|
file_data = p = 0;
|
|
file_size = 0;
|
|
|
|
_driver->callback(4, _soundDataPtr);
|
|
|
|
_soundFileLoaded = file;
|
|
}
|
|
|
|
void SoundAdlibPC::unk1() {
|
|
playSoundEffect(0);
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//_vm->_system->delayMillis(5 * 60);
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}
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void SoundAdlibPC::unk2() {
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playSoundEffect(0);
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}
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} // end of namespace Kyra
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