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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef TOWNS_AUDIO_H
#define TOWNS_AUDIO_H
#include "sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h"
class TownsAudioInterfacePluginDriver {
public:
virtual ~TownsAudioInterfacePluginDriver() {}
virtual void timerCallback(int timerId) = 0;
};
class TownsAudio_PcmChannel;
class TownsAudio_WaveTable;
class TownsAudioInterface : public TownsPC98_FmSynth {
public:
TownsAudioInterface(Audio::Mixer *mixer, TownsAudioInterfacePluginDriver *driver);
~TownsAudioInterface();
bool init();
int callback(int command, ...);
void setMusicVolume(int volume);
void setSoundEffectVolume(int volume);
// Defines the channels used as sound effect channels for the purpose of ScummVM GUI volume control.
// The first 6 bits are the 6 fm channels. The next 8 bits are pcm channels.
void setSoundEffectChanMask(int mask);
private:
void nextTickEx(int32 *buffer, uint32 bufferSize);
void timerCallbackA();
void timerCallbackB();
typedef int (TownsAudioInterface::*TownsAudioIntfCallback)(va_list &);
const TownsAudioIntfCallback *_intfOpcodes;
int intf_reset(va_list &args);
int intf_keyOn(va_list &args);
int intf_keyOff(va_list &args);
int intf_setPanPos(va_list &args);
int intf_setInstrument(va_list &args);
int intf_loadInstrument(va_list &args);
int intf_setPitch(va_list &args);
int intf_setLevel(va_list &args);
int intf_chanOff(va_list &args);
int intf_writeReg(va_list &args);
int intf_writeRegBuffer(va_list &args);
int intf_readRegBuffer(va_list &args);
int intf_setTimerA(va_list &args);
int intf_setTimerB(va_list &args);
int intf_enableTimerA(va_list &args);
int intf_enableTimerB(va_list &args);
int intf_loadSamples(va_list &args);
int intf_reserveEffectChannels(va_list &args);
int intf_loadWaveTable(va_list &args);
int intf_unloadWaveTable(va_list &args);
int intf_pcmPlayEffect(va_list &args);
int intf_pcmChanOff(va_list &args);
int intf_pcmEffectPlaying(va_list &args);
int intf_fmKeyOn(va_list &args);
int intf_fmKeyOff(va_list &args);
int intf_fmSetPanPos(va_list &args);
int intf_fmSetInstrument(va_list &args);
int intf_fmLoadInstrument(va_list &args);
int intf_fmSetPitch(va_list &args);
int intf_fmSetLevel(va_list &args);
int intf_fmReset(va_list &args);
int intf_setOutputVolume(va_list &args);
int intf_resetOutputVolume(va_list &args);
int intf_updateOutputVolume(va_list &args);
int intf_pcmUpdateEnvelopeGenerator(va_list &args);
int intf_notImpl(va_list &args);
void fmReset();
int fmKeyOn(int chan, int note, int velo);
int fmKeyOff(int chan);
int fmChanOff(int chan);
int fmSetPanPos(int chan, int mode);
int fmSetInstrument(int chan, int instrId);
int fmLoadInstrument(int instrId, const uint8 *data);
int fmSetPitch(int chan, int pitch);
int fmSetLevel(int chan, int lvl);
void bufferedWriteReg(uint8 part, uint8 regAddress, uint8 value);
uint8 _fmChanPlaying;
uint8 _fmChanNote[6];
int16 _fmChanPitch[6];
uint8 *_fmSaveReg[2];
uint8 *_fmInstruments;
void pcmReset();
int pcmKeyOn(int chan, int note, int velo);
int pcmKeyOff(int chan);
int pcmChanOff(int chan);
int pcmSetPanPos(int chan, int mode);
int pcmSetInstrument(int chan, int instrId);
int pcmLoadInstrument(int instrId, const uint8 *data);
int pcmSetPitch(int chan, int pitch);
int pcmSetLevel(int chan, int lvl);
void pcmUpdateEnvelopeGenerator(int chan);
TownsAudio_PcmChannel *_pcmChan;
uint8 _pcmChanOut;
uint8 _pcmChanReserved;
uint8 _pcmChanKeyPressed;
uint8 _pcmChanEffectPlaying;
uint8 _pcmChanKeyPlaying;
uint8 _pcmChanNote[8];
uint8 _pcmChanVelo[8];
uint8 _pcmChanLevel[8];
uint8 _numReservedChannels;
uint8 *_pcmInstruments;
TownsAudio_WaveTable *_waveTables;
uint8 _numWaveTables;
uint32 _waveTablesTotalDataSize;
void pcmCalcPhaseStep(TownsAudio_PcmChannel *p, TownsAudio_WaveTable *w);
void updateOutputVolume();
uint8 _outputVolumeFlags;
uint8 _outputLevel[16];
uint8 _outputMuteFlags;
const float _baserate;
uint32 _timerBase;
uint32 _tickLength;
uint32 _timer;
uint16 _musicVolume;
uint16 _sfxVolume;
int _pcmSfxChanMask;
TownsAudioInterfacePluginDriver *_drv;
bool _ready;
static const uint8 _chanFlags[];
static const uint16 _frequency[];
static const uint8 _carrier[];
static const uint8 _fmDefaultInstrument[];
static const uint16 _pcmPhase1[];
static const uint16 _pcmPhase2[];
};
#endif
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