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/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef TWP_AUDIO_H
#define TWP_AUDIO_H
#include "common/str.h"
#include "common/array.h"
#include "common/stream.h"
#include "audio/mixer.h"
#include "twp/ggpack.h"
namespace Audio {
class SeekableAudioStream;
}
namespace Twp {
enum {
NUM_AUDIO_SLOTS = 32
};
class AudioChannel;
class SoundDefinition;
class SoundDefinition;
class SoundStream : public Common::SeekableReadStream {
public:
void open(Common::SharedPtr<SoundDefinition> sndDef);
virtual uint32 read(void *dataPtr, uint32 dataSize) override;
virtual bool eos() const override;
virtual int64 pos() const override;
virtual int64 size() const override;
virtual bool seek(int64 offset, int whence = SEEK_SET) override;
private:
MemStream _stream;
};
class SoundDefinition {
public:
friend class SoundStream;
public:
SoundDefinition(const Common::String &name);
void load();
int getId() const { return _id; }
Common::String getName() const { return _name; }
private:
int _id; // identifier for this sound
Common::String _name; // name of the sound to load
Common::Array<byte> _buffer; // buffer containing the sound data
bool _loaded = false; // indicates whether or not the sound buffer has been loaded
};
struct AudioSlot {
Audio::SoundHandle handle; // handle returned when this sound has been played
Common::SharedPtr<SoundDefinition> sndDef; // sound definition associated to this slot
SoundStream stream; // audio stream
bool busy = false; // is sound active
float volume = 1.f; // actual volume for this slot
float fadeInTimeMs = 0.f; // fade-in time in milliseconds
float fadeOutTimeMs = 0.f; // fade-out time in milliseconds
int total = 0; // duration of the sound in milliseconds
int id = 0; // unique sound ID
int objId = 0; // object ID or 0 if none
int loopTimes = 0; // specified number of times to loop
Audio::Mixer::SoundType soundType = Audio::Mixer::kPlainSoundType; // sound type: plain, music, sfx, speech
};
class AudioSystem {
public:
int play(Common::SharedPtr<SoundDefinition> sndDef, Audio::Mixer::SoundType cat, int loopTimes = 0, float fadeInTimeMs = 0.f, float volume = 1.f, int objId = 0);
bool playing(int id) const;
bool playing(Common::SharedPtr<SoundDefinition> soundDef) const;
void fadeOut(int id, float fadeTime);
void stop(int id);
void setMasterVolume(float vol);
float getMasterVolume() const;
void setVolume(int id, float vol);
int getElapsed(int id) const;
int getDuration(int id) const;
void update(float elapsed);
Common::Array<Common::SharedPtr<SoundDefinition> > _soundDefs;
AudioSlot _slots[NUM_AUDIO_SLOTS];
Common::SharedPtr<SoundDefinition> _soundHover; // not used yet, should be used in the GUI
private:
void updateVolume(AudioSlot *slot);
AudioSlot *getFreeSlot();
private:
float _masterVolume = 1.f;
};
} // End of namespace Twp
#endif // TWP_H
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