mirror of
https://github.com/libretro/scummvm.git
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149 lines
3.9 KiB
C++
149 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef SOUND_H_
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#define SOUND_H_
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#include "audio/audiostream.h"
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#include "audio/mixer.h"
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#include "common/str.h"
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namespace Myst3 {
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class Myst3Engine;
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enum SoundType {
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kAny,
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kAmbient,
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kCue,
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kEffect,
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kMusic
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};
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enum SoundNextCommand {
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kRandom,
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kNext,
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kRandomIfOtherStarting,
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kNextIfOtherStarting
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};
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class SoundChannel {
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public:
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SoundChannel(Myst3Engine *vm);
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virtual ~SoundChannel();
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void play(uint32 id, uint32 volume, uint16 heading, uint16 attenuation, bool loop, SoundType type);
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void setVolume3D(uint32 volume, uint16 heading, uint16 attenuation);
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void fade(uint32 targetVolume, int32 targetHeading, int32 targetAttenuation, uint32 fadeDelay);
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void fadeOut(uint32 fadeDelay);
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void update();
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void stop();
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void age(uint32 maxAge);
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uint32 playedFrames();
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uint32 adjustVolume(uint32 volume);
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uint32 _id;
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bool _playing;
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bool _stopWhenSilent;
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bool _fading;
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SoundType _type;
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uint32 _age;
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uint32 _ambientFadeOutDelay;
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uint _fadeLastTick;
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int32 _fadeDuration; // In frames (@30 fps)
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int32 _fadePosition;
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int32 _fadeSourceVolume;
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int32 _fadeTargetVolume;
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int32 _fadeSourceHeading;
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int32 _fadeTargetHeading;
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int32 _fadeSourceAttenuation;
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int32 _fadeTargetAttenuation;
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bool _hasFadeArray;
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uint32 _fadeArrayPosition;
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uint32 _fadeDurations[4];
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uint32 _fadeVolumes[4];
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private:
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Myst3Engine *_vm;
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Common::String _name;
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uint32 _volume;
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int32 _heading;
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uint32 _headingAngle;
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Audio::AudioStream *_stream;
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Audio::SoundHandle _handle;
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Audio::Timestamp _length;
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Audio::RewindableAudioStream *makeAudioStream(const Common::String &name) const;
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void updateFading();
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Audio::Mixer::SoundType mixerSoundType();
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};
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class Sound {
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public:
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Sound(Myst3Engine *vm);
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virtual ~Sound();
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SoundChannel *getChannelForSound(uint32 id, SoundType type, bool *found = nullptr);
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void playEffect(uint32 id, uint32 volume, uint16 heading = 0, uint16 attenuation = 0);
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void playEffectLooping(uint32 id, uint32 volume, uint16 heading = 0, uint16 attenuation = 0);
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void playEffectFadeInOut(uint32 id, uint32 volume, uint16 heading, uint16 attenuation,
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uint32 fadeInDuration, uint32 playDuration, uint32 fadeOutDuration);
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void stopEffect(uint32 id, uint32 fadeDuration);
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void playCue(uint32 id, uint32 volume, uint16 heading, uint16 attenuation);
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void stopCue(uint32 fadeDelay);
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void stopMusic(uint32 fadeDelay);
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bool isPlaying(uint32 id);
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int32 playedFrames(uint32 id);
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void update();
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void age();
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void fadeOutOldSounds(uint32 fadeDelay);
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void computeVolumeBalance(int32 volume, int32 heading, uint attenuation, int32 *mixerVolume, int32 *balance);
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void setupNextSound(SoundNextCommand command, int16 controlVar, int16 startSoundId, int16 soundCount,
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int32 soundMinDelay, int32 soundMaxDelay, int32 controlSoundId = 0, int32 controlSoundMaxPosition = 0);
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void resetSoundVars();
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private:
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static const uint kNumChannels = 14;
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Myst3Engine *_vm;
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SoundChannel *_channels[kNumChannels];
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void compute3DVolumes(int32 heading, uint angle, int32 *left, int32 *right);
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};
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} // End of namespace Myst3
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#endif // SOUND_H_
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