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Diffstat (limited to 'engines/scumm/player_nes.h')
-rw-r--r-- | engines/scumm/player_nes.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/engines/scumm/player_nes.h b/engines/scumm/player_nes.h new file mode 100644 index 0000000000..17a11b2fe3 --- /dev/null +++ b/engines/scumm/player_nes.h @@ -0,0 +1,115 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001 Ludvig Strigeus + * Copyright (C) 2001-2006 The ScummVM project + * + * 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 PLAYER_NES_H +#define PLAYER_NES_H + +#include "common/scummsys.h" +#include "scumm/music.h" +#include "sound/audiostream.h" + +namespace Audio { + class Mixer; +} + +namespace Scumm { + +class ScummEngine; + +static const int MAXVOLUME = 0x7F; +static const int NUMSLOTS = 3; +static const int NUMCHANS = 4; + +/** + * Scumm NES sound/music driver. + */ +class Player_NES : public AudioStream, public MusicEngine { +public: + Player_NES(ScummEngine *scumm); + virtual ~Player_NES(); + + virtual void setMusicVolume(int vol); + virtual void startSound(int sound); + virtual void stopSound(int sound); + virtual void stopAllSounds(); + virtual int getSoundStatus(int sound) const; + + // AudioStream API + int readBuffer(int16 *buffer, const int numSamples); + bool isStereo() const { return false; } + bool endOfData() const { return false; } + int getRate() const { return _sample_rate; } + +private: + + void sound_play(); + void playSFX(int nr); + void playMusic(); + byte fetchSoundByte(int nr); + void chainCommand(int chan); + void checkSilenceChannels(int chan); + + void APU_writeChannel(int chan, int offset, byte value); + void APU_writeControl(byte value); + byte APU_readStatus(); + + void do_mix(int16 *buf, uint len); + + ScummEngine *_vm; + Audio::Mixer *_mixer; + int _sample_rate; + int _samples_per_frame; + int _current_sample; + int _maxvol; + + struct slot { + int framesleft; + int id; + int type; + byte *data; + int offset; + } _slot[NUMSLOTS]; + + struct mchan { + int command; + int framedelay; + int pitch; + int volume; + int voldelta; + int envflags; + int cmdlock; + } _mchan[NUMCHANS]; + + bool isSFXplaying, wasSFXplaying; + + byte *dataStart; + int numNotes; + byte *auxData1; + byte *auxData2; + + byte *soundptr; +}; + +} // End of namespace Scumm + +#endif |