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1af4932242
This patch/bug is closely related to the behavior shown in agos engine (see https://sourceforge.net/tracker/?func=detail&aid=1657436&group_id=37116&atid=418822). Every time structs are used to extract data from a buffer, these structs have to be packed. It is not OK to assume that the compiler does not pad the struct, or that it doesn't have alignment assumptions voodoo (see cited patch). svn-id: r25881
160 lines
3.5 KiB
C++
160 lines
3.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2006 The ScummVM project
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*
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* Copyright (C) 1999-2001 Sarien Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef AGI_SOUND_H
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#define AGI_SOUND_H
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#include "sound/audiostream.h"
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#include "sound/mixer.h"
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namespace Agi {
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#define BUFFER_SIZE 410
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#define SOUND_EMU_NONE 0
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#define SOUND_EMU_PC 1
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#define SOUND_EMU_TANDY 2
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#define SOUND_EMU_MAC 3
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#define SOUND_EMU_AMIGA 4
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#define SOUND_PLAYING 0x01
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#define WAVEFORM_SIZE 64
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#define ENV_ATTACK 10000 /**< envelope attack rate */
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#define ENV_DECAY 1000 /**< envelope decay rate */
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#define ENV_SUSTAIN 100 /**< envelope sustain level */
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#define ENV_RELEASE 7500 /**< envelope release rate */
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#define NUM_CHANNELS 7 /**< number of sound channels */
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/**
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* AGI sound resource structure.
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*/
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struct AgiSound {
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uint32 flen; /**< size of raw data */
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uint8 *rdata; /**< raw sound data */
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uint8 flags; /**< sound flags */
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uint16 type; /**< sound resource type */
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};
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#include "common/pack-start.h"
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/**
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* AGI sound note structure.
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*/
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struct AgiNote {
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uint8 durLo; /**< LSB of note duration */
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uint8 durHi; /**< MSB of note duration */
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uint8 frq0; /**< LSB of note frequency */
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uint8 frq1; /**< MSB of note frequency */
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uint8 vol; /**< note volume */
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};
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#include "common/pack-end.h"
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/**
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* AGI engine sound channel structure.
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*/
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struct ChannelInfo {
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#define AGI_SOUND_SAMPLE 0x0001
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#define AGI_SOUND_MIDI 0x0002
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#define AGI_SOUND_4CHN 0x0008
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uint32 type;
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struct AgiNote *ptr;
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int16 *ins;
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int32 size;
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uint32 phase;
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#define AGI_SOUND_LOOP 0x0001
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#define AGI_SOUND_ENVELOPE 0x0002
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uint32 flags;
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#define AGI_SOUND_ENV_ATTACK 3
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#define AGI_SOUND_ENV_DECAY 2
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#define AGI_SOUND_ENV_SUSTAIN 1
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#define AGI_SOUND_ENV_RELEASE 0
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uint32 adsr;
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int32 timer;
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uint32 end;
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uint32 freq;
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uint32 vol;
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uint32 env;
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};
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class AgiEngine;
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class SoundMgr : public Audio::AudioStream {
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AgiEngine *_vm;
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public:
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SoundMgr(AgiEngine *agi, Audio::Mixer *pMixer);
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~SoundMgr();
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virtual void setVolume(uint8 volume);
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// AudioStream API
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int readBuffer(int16 *buffer, const int numSamples) {
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premixerCall(buffer, numSamples / 2);
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return numSamples;
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}
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bool isStereo() const {
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return false;
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}
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bool endOfData() const {
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return false;
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}
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int getRate() const {
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// FIXME: Ideally, we should use _sampleRate.
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return 22050;
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}
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private:
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Audio::Mixer *_mixer;
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Audio::SoundHandle _soundHandle;
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uint32 _sampleRate;
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void premixerCall(int16 *buf, uint len);
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public:
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void decodeSound(int);
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void unloadSound(int);
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void playSound();
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int initSound();
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void deinitSound();
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void startSound(int, int);
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void stopSound();
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void stopNote(int i);
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void playNote(int i, int freq, int vol);
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void playAgiSound();
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uint32 mixSound();
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int loadInstruments(char *fname);
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#ifdef USE_IIGS_SOUND
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void playMidiSound();
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void playSampleSound();
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#endif
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};
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} // End of namespace Agi
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#endif /* AGI_SOUND_H */
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