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towns_pc98_driver.h

/* 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_PC98_AUDIODRIVER_H
#define TOWNS_PC98_AUDIODRIVER_H

#include "audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h"

class TownsPC98_MusicChannel;
class TownsPC98_MusicChannelSSG;
class TownsPC98_SfxChannel;
#ifndef DISABLE_PC98_RHYTHM_CHANNEL
class TownsPC98_MusicChannelPCM;
#endif

00038 class TownsPC98_AudioDriver : public TownsPC98_FmSynth {
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() {
            _musicPlaying = false;
      }
      void cont() {
            _musicPlaying = true;
      }

      void timerCallbackB();
      void timerCallbackA();

      bool looping() {
            return _looping == _updateChannelsFlag ? true : false;
      }
      bool musicPlaying() {
            return _musicPlaying;
      }

      void setMusicVolume(int volume) {
            _musicVolume = volume;
            setVolumeIntern(_musicVolume, _sfxVolume);
      }
      void setSoundEffectVolume(int volume) {
            _sfxVolume = volume;
            setVolumeIntern(_musicVolume, _sfxVolume);
      }

protected:
      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

      const uint8 *_opnCarrier;
      const uint8 *_opnFreqTable;
      const uint8 *_opnFreqTableSSG;
      const uint8 *_opnFxCmdLen;
      const uint8 *_opnLvlPresets;

      uint8 *_musicBuffer;
      uint8 *_sfxBuffer;
      uint8 *_trackPtr;
      uint8 *_patches;
      uint8 *_ssgPatches;

      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];

      uint16 _musicVolume;
      uint16 _sfxVolume;

      static const uint8 _drvTables[];

      bool _ready;
};

#endif


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