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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 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.
*
*/
#ifndef BLADERUNNER_AUDIO_PLAYER_H
#define BLADERUNNER_AUDIO_PLAYER_H
#include "common/array.h"
#include "common/mutex.h"
#include "common/str.h"
#include "audio/audiostream.h"
namespace BladeRunner {
class BladeRunnerEngine;
class AudioCache;
/*
* This is a poor imitation of Bladerunner's resource cache
*/
class AudioCache {
struct cacheItem {
int32 hash;
int refs;
uint lastAccess;
byte *data;
uint32 size;
};
Common::Mutex _mutex;
Common::Array<cacheItem> _cacheItems;
uint32 _totalSize;
uint32 _maxSize;
uint32 _accessCounter;
public:
AudioCache() :
_totalSize(0),
_maxSize(2457600),
_accessCounter(0) {
}
~AudioCache();
bool canAllocate(uint32 size);
bool dropOldest();
byte *findByHash(int32 hash);
void storeByHash(int32 hash, Common::SeekableReadStream *stream);
void incRef(int32 hash);
void decRef(int32 hash);
};
class AudioPlayer {
static const int kTracks = 6;
struct Track {
bool isActive;
int channel;
int priority;
int32 hash;
int volume;
int pan;
Audio::AudioStream *stream;
Track() : isActive(false) {}
};
BladeRunnerEngine *_vm;
Common::Mutex _mutex;
AudioCache *_cache;
Track _tracks[kTracks];
int _sfxVolume;
public:
AudioPlayer(BladeRunnerEngine *vm);
~AudioPlayer();
enum {
LOOP = 1,
OVERRIDE_VOLUME = 2
};
int playAud(const Common::String &name, int volume, int panStart, int panEnd, int priority, byte flags = 0);
bool isActive(int track);
void stop(int track, bool immediately);
void stopAll();
void adjustVolume(int track, int volume, int delay, bool overrideVolume);
void adjustPan(int track, int pan, int delay);
private:
void remove(int channel);
static void mixerChannelEnded(int channel, void *data);
};
} // End of namespace BladeRunner
#endif
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