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Diffstat (limited to 'engines/gob/sound/soundblaster.h')
-rw-r--r-- | engines/gob/sound/soundblaster.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/engines/gob/sound/soundblaster.h b/engines/gob/sound/soundblaster.h new file mode 100644 index 0000000000..575d4994be --- /dev/null +++ b/engines/gob/sound/soundblaster.h @@ -0,0 +1,116 @@ +/* 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 GOB_SOUND_SOUNDBLASTER_H +#define GOB_SOUND_SOUNDBLASTER_H + +#include "common/mutex.h" +#include "common/frac.h" +#include "sound/audiostream.h" +#include "sound/mixer.h" +#include "sound/softsynth/pcspk.h" + +namespace Gob { + +class SoundBlaster : public Audio::AudioStream { +public: + char _playingSound; + + SoundBlaster(Audio::Mixer &mixer); + ~SoundBlaster(); + + bool loadSample(SoundDesc &sndDesc, const char *fileName); + void freeSample(SoundDesc &sndDesc); + + void playSample(SoundDesc &sndDesc, int16 repCount, + int16 frequency, int16 fadeLength = 0); + void stopSound(int16 fadeLength, SoundDesc *sndDesc = 0); + + void playComposition(int16 *composition, int16 freqVal, + SoundDesc *sndDescs = 0, int8 sndCount = 60); + void stopComposition(); + void endComposition(); + + bool isPlaying() const; + char getPlayingSound() const; + + void setRepeating(int32 repCount); + void waitEndPlay(bool interruptible = false, bool stopComp = true); + + static void convToSigned(byte *buffer, int length) { + while (length-- > 0) + *buffer++ ^= 0x80; + } + + int readBuffer(int16 *buffer, const int numSamples); + bool isStereo() const { return false; } + bool endOfData() const { return _end; } + bool endOfStream() const { return false; } + int getRate() const { return _rate; } + +protected: + Audio::Mixer *_mixer; + + Audio::SoundHandle *_activeHandle; + Audio::SoundHandle _compositionHandle; + + SoundDesc *_compositionSamples; + int8 _compositionSampleCount; + int16 _composition[50]; + int8 _compositionPos; + + Audio::SoundHandle _handle; + Common::Mutex _mutex; + SoundDesc *_curSoundDesc; + bool _end; + int8 *_data; + uint32 _length; + uint32 _rate; + int32 _freq; + int32 _repCount; + + uint32 _offset; + frac_t _offsetFrac; + frac_t _offsetInc; + + int16 _cur; + int16 _last; + + bool _fade; + int32 _fadeVol; + int32 _fadeVolStep; + uint8 _fadeLength; + uint32 _fadeSamples; + uint32 _curFadeSamples; + + void setSample(SoundDesc &sndDesc, int16 repCount, + int16 frequency, int16 fadeLength); + void checkEndSample(); + void nextCompositionPos(); +}; + +} // End of namespace Gob + +#endif // GOB_SOUND_SOUNDBLASTER_H |