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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003-2006 The ScummVM project
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef SOUND_AUDIOCD_H
#define SOUND_AUDIOCD_H
#include "common/stdafx.h"
#include "common/scummsys.h"
#include "common/singleton.h"
#include "sound/mixer.h"
namespace Audio {
class DigitalTrackInfo {
public:
virtual ~DigitalTrackInfo() {}
virtual void play(Mixer *mixer, SoundHandle *handle, int numLoops, int startFrame, int duration) = 0;
// virtual void stop();
};
class AudioCDManager : public Common::Singleton<AudioCDManager> {
public:
struct Status {
bool playing;
int track;
int start;
int duration;
int numLoops;
};
/**
* Start playback of the specified "CD" track. This method mimics
* the interface of OSystem::playCD (which it in fact may call, if an Audio CD is
* present), but also can play digital audio tracks in various formats.
*
* @param track the track to play.
* @param num_loops how often playback should be repeated (-1 = infinitely often).
* @param start_frame the frame at which playback should start (75 frames = 1 second).
* @param duration the number of frames to play (0: play until end)
*/
void play(int track, int numLoops, int startFrame, int duration);
void stop();
bool isPlaying() const;
void updateCD();
Status getStatus() const;
private:
friend class Common::Singleton<SingletonBaseType>;
AudioCDManager();
int getCachedTrack(int track);
private:
/* used for emulated CD music */
struct ExtStatus : Status {
SoundHandle handle;
};
ExtStatus _cd;
enum {
#if defined(__PSP__)
CACHE_TRACKS = 4 //the PSP can't have more than 8 files open simultaneously
//so don't use more than 4 filehandles for CD tracks
#else
CACHE_TRACKS = 10
#endif
};
int _cachedTracks[CACHE_TRACKS];
DigitalTrackInfo *_trackInfo[CACHE_TRACKS];
int _currentCacheIdx;
Mixer *_mixer;
};
/** Shortcut for accessing the audio CD manager. */
#define AudioCD Audio::AudioCDManager::instance()
} // End of namespace Audio
#endif
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