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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_CACHE_H
#define BLADERUNNER_AUDIO_CACHE_H
#include "common/array.h"
#include "common/mutex.h"
namespace BladeRunner {
/*
* 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();
~AudioCache();
bool canAllocate(uint32 size) const;
bool dropOldest();
byte *findByHash(int32 hash);
void storeByHash(int32 hash, Common::SeekableReadStream *stream);
void incRef(int32 hash);
void decRef(int32 hash);
};
} // End of namespace BladeRunner
#endif
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