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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.
*
*/
#ifndef TOWNS_PC98_AUDIODRIVER_H
#define TOWNS_PC98_AUDIODRIVER_H
#include "audio/softsynth/fmtowns_pc98/pc98_audio.h"
class TownsPC98_MusicChannel;
class TownsPC98_MusicChannelSSG;
class TownsPC98_SfxChannel;
#ifndef DISABLE_PC98_RHYTHM_CHANNEL
class TownsPC98_MusicChannelPCM;
#endif
class TownsPC98_AudioDriver : public PC98AudioPluginDriver {
friend class TownsPC98_MusicChannel;
friend class TownsPC98_MusicChannelSSG;
friend class TownsPC98_SfxChannel;
#ifndef DISABLE_PC98_RHYTHM_CHANNEL
friend class TownsPC98_MusicChannelPCM;
#endif
public:
TownsPC98_AudioDriver(Audio::Mixer *mixer, EmuType type);
~TownsPC98_AudioDriver();
void loadMusicData(uint8 *data, bool loadPaused = false);
void loadSoundEffectData(uint8 *data, uint8 trackNum);
bool init();
void reset();
void fadeStep();
void pause();
void cont();
bool looping() const;
bool musicPlaying() const;
void setMusicVolume(int volume);
void setSoundEffectVolume(int volume);
private:
uint8 readReg(uint8 part, uint8 reg);
void writeReg(uint8 part, uint8 reg, uint8 val);
void preventRegisterWrite(bool prevent);
void timerCallbackA();
void timerCallbackB();
void startSoundEffect();
void setMusicTempo(uint8 tempo);
void setSfxTempo(uint16 tempo);
TownsPC98_MusicChannel **_channels;
TownsPC98_MusicChannelSSG **_ssgChannels;
TownsPC98_SfxChannel **_sfxChannels;
#ifndef DISABLE_PC98_RHYTHM_CHANNEL
TownsPC98_MusicChannelPCM *_rhythmChannel;
#endif
uint8 *_musicBuffer;
uint8 *_sfxBuffer;
const uint8 *_patchData;
uint8 _updateChannelsFlag;
uint8 _updateSSGFlag;
uint8 _updateRhythmFlag;
uint8 _updateSfxFlag;
uint8 _finishedChannelsFlag;
uint8 _finishedSSGFlag;
uint8 _finishedRhythmFlag;
uint8 _finishedSfxFlag;
bool _musicPlaying;
bool _sfxPlaying;
uint8 _fading;
uint8 _looping;
uint32 _musicTickCounter;
int _sfxOffs;
uint8 *_sfxData;
uint16 _sfxOffsets[2];
uint8 *_trackPtr;
bool _regWriteProtect;
PC98AudioCore *_pc98a;
const int _numChanFM;
const int _numChanSSG;
const int _numChanRHY;
static const uint8 _channelPreset[36];
static const uint8 _levelPresetFMTOWNS[24];
static const uint8 _levelPresetPC98[24];
const uint8 *_levelPresets;
bool _ready;
};
#endif
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