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https://github.com/libretro/scummvm.git
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66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef BLADERUNNER_AUDIO_CACHE_H
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#define BLADERUNNER_AUDIO_CACHE_H
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#include "common/array.h"
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#include "common/mutex.h"
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namespace BladeRunner {
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/*
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* This is a poor imitation of Bladerunner's resource cache
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*/
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class AudioCache {
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struct cacheItem {
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int32 hash;
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int refs;
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uint lastAccess;
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byte *data;
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uint32 size;
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};
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Common::Mutex _mutex;
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Common::Array<cacheItem> _cacheItems;
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uint32 _totalSize;
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uint32 _maxSize;
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uint32 _accessCounter;
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public:
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AudioCache();
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~AudioCache();
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bool canAllocate(uint32 size) const;
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bool dropOldest();
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byte *findByHash(int32 hash);
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void storeByHash(int32 hash, Common::SeekableReadStream *stream);
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void incRef(int32 hash);
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void decRef(int32 hash);
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};
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} // End of namespace BladeRunner
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#endif
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