audio.h

/* 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/>.
 *
 */

/* Sound engine */
#ifndef SCI_SOUND_AUDIO_H
#define SCI_SOUND_AUDIO_H

#include "sci/engine/vm_types.h"
#include "audio/mixer.h"

namespace Audio {
class RewindableAudioStream;
} // End of namespace Audio

namespace Sci {

enum AudioCommands {
    kSciAudioWPlay = 1, /* Loads an audio stream */
    kSciAudioPlay = 2, /* Plays an audio stream */
    kSciAudioStop = 3, /* Stops an audio stream */
    kSciAudioPause = 4, /* Pauses an audio stream */
    kSciAudioResume = 5, /* Resumes an audio stream */
    kSciAudioPosition = 6, /* Return current position in audio stream */
    kSciAudioRate = 7, /* Return audio rate */
    kSciAudioVolume = 8, /* Return audio volume */
    kSciAudioLanguage = 9, /* Return audio language */
    kSciAudioCD = 10 /* Plays SCI1.1 CD audio */
};

#define AUDIO_VOLUME_MAX 127

class Resource;
class ResourceId;
class ResourceManager;
class SegManager;

class AudioPlayer {
public:
    AudioPlayer(ResourceManager *resMan);
    ~AudioPlayer();

    void setAudioRate(uint16 rate) { _audioRate = rate; }
    Audio::SoundHandle *getAudioHandle() { return &_audioHandle; }
    Audio::RewindableAudioStream *getAudioStream(uint32 number, uint32 volume, int *sampleLen);
    int getAudioPosition();
    int startAudio(uint16 module, uint32 tuple);
    int wPlayAudio(uint16 module, uint32 tuple);
    void stopAudio();
    void pauseAudio();
    void resumeAudio();

    void handleFanmadeSciAudio(reg_t sciAudioObject, SegManager *segMan);

    int audioCdPlay(int track, int start, int duration);
    void audioCdStop();
    void audioCdUpdate();
    int audioCdPosition();

    void stopAllAudio();

    void incrementPlayCounter();
    uint16 getPlayCounter();

private:
    ResourceManager *_resMan;
    uint16 _audioRate;
    Audio::SoundHandle _audioHandle;
    Audio::Mixer *_mixer;
    uint32 _audioCdStart;
    bool _wPlayFlag;
    bool _initCD;
    uint16 _playCounter;
};

} // End of namespace Sci

#endif // SCI_SOUND_AUDIO_H