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83 lines
2.4 KiB
C++
83 lines
2.4 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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* Based on the original sources
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* Faery Tale II -- The Halls of the Dead
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* (c) 1993-1996 The Wyrmkeep Entertainment Co.
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*/
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#ifndef SAGA2_IMAGCACH_H
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#define SAGA2_IMAGCACH_H
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namespace Saga2 {
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/* ===================================================================== *
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ImageNode class which defines a re-entrant image resource
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* ===================================================================== */
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class CImageNode : public DNode {
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private:
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uint32 contextID; // ID of context
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uint32 resourceID; // RES_ID of image
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uint16 requested; // the number of allocation requests made to node
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void *image; // the image
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public:
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CImageNode(hResContext *con, uint32 resID);
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~CImageNode(void);
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void *getImagePtr(void);
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bool isSameImage(hResContext *con, uint32 resID);
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bool isSameImage(void *imagePtr);
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uint16 getNumRequested(void) {
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return requested;
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}
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bool releaseRequest(void);
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};
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/* ===================================================================== *
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ImageCache class which maintains a list of ImageNodes
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* ===================================================================== */
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class CImageCache {
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private:
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DList nodes; // list of ImageNode
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public:
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CImageCache(void) {
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assert(nodes.empty());
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}
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~CImageCache(void);
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void *requestImage(hResContext *con, uint32 resID);
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void releaseImage(void *);
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};
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// global declarations
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extern CImageCache ImageCache;
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} // end of namespace Saga2
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#endif
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