scummvm/engines/mtropolis/audio_player.h

69 lines
2.2 KiB
C++

/* 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 MTROPOLIS_AUDIO_PLAYER_H
#define MTROPOLIS_AUDIO_PLAYER_H
#include "common/mutex.h"
#include "audio/audiostream.h"
#include "audio/mixer.h"
namespace MTropolis {
struct AudioMetadata;
class CachedAudio;
// Audio player, this does not support requeueing. If the sound exhausts, then you must create a
// new audio player. In particular, since time is being tracked separately, if the loop status
// changes when the timer thinks the sound should still be playing, but the sound has actually
// exhausted, then the sound needs to be requeued.
class AudioPlayer : public Audio::AudioStream {
public:
AudioPlayer(Audio::Mixer *mixer, byte volume, int8 balance, const Common::SharedPtr<AudioMetadata> &metadata, const Common::SharedPtr<CachedAudio> &audio, bool isLooping, size_t currentPos, size_t startPos, size_t endPos);
~AudioPlayer();
int readBuffer(int16 *buffer, const int numSamples) override;
bool isStereo() const override;
int getRate() const override;
bool endOfData() const override;
void sendToMixer(Audio::Mixer *mixer, byte volume, int8 balance);
void stop();
private:
Common::Mutex _mutex;
Common::SharedPtr<AudioMetadata> _metadata;
Common::SharedPtr<CachedAudio> _audio;
Audio::SoundHandle _handle;
bool _isLooping;
bool _exhausted;
size_t _currentPos;
size_t _startPos;
size_t _endPos;
Audio::Mixer *_mixer;
};
} // End of namespace MTropolis
#endif