mirror of
https://github.com/libretro/scummvm.git
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142 lines
3.0 KiB
C++
142 lines
3.0 KiB
C++
/* Copyright (C) 1994-1998 Revolution Software Ltd.
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* Copyright (C) 2003-2006 The ScummVM project
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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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* $URL$
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* $Id$
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*/
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#ifndef SWORD2_RESMAN_H
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#define SWORD2_RESMAN_H
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namespace Common {
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class File;
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}
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#define MAX_MEM_CACHE (8 * 1024 * 1024) // we keep up to 8 megs of resource data files in memory
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#define MAX_res_files 20
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namespace Sword2 {
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class Sword2Engine;
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struct Resource {
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byte *ptr;
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uint32 size;
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uint32 refCount;
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Resource *next, *prev;
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};
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struct ResourceFile {
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char fileName[20];
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int32 numEntries;
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uint32 *entryTab;
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uint8 cd;
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};
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class ResourceManager {
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private:
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Common::File *openCluFile(uint16 fileNum);
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void readCluIndex(uint16 fileNum, Common::File *file = NULL);
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void removeFromCacheList(Resource *res);
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void addToCacheList(Resource *res);
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void checkMemUsage();
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Sword2Engine *_vm;
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int _curCD;
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uint32 _totalResFiles;
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uint32 _totalClusters;
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// Gode generated res-id to res number/rel number conversion table
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uint16 *_resConvTable;
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ResourceFile _resFiles[MAX_res_files];
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Resource *_resList;
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Resource *_cacheStart, *_cacheEnd;
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uint32 _usedMem; // amount of used memory in bytes
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public:
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ResourceManager(Sword2Engine *vm); // read in the config file
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~ResourceManager();
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bool init();
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uint32 getNumResFiles() { return _totalResFiles; }
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uint32 getNumClusters() { return _totalClusters; }
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ResourceFile *getResFiles() { return _resFiles; }
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Resource *getResList() { return _resList; }
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byte *openResource(uint32 res, bool dump = false);
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void closeResource(uint32 res);
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bool checkValid(uint32 res);
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uint32 fetchLen(uint32 res);
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uint8 fetchType(uint32 res) {
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byte *ptr = openResource(res);
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uint8 type = ptr[0];
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closeResource(res);
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return type;
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}
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uint8 fetchType(byte *ptr) {
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return ptr[0];
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}
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byte *fetchName(uint32 res, byte *buf = NULL) {
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static byte tempbuf[NAME_LEN];
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if (!buf)
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buf = tempbuf;
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byte *ptr = openResource(res);
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memcpy(buf, ptr + 10, NAME_LEN);
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closeResource(res);
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return buf;
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}
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byte *fetchName(byte *ptr) {
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return ptr + 10;
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}
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// Prompts the user for the specified CD.
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void askForCD(int cd);
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void setCD(int cd) {
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if (cd)
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_curCD = cd;
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}
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int getCD() {
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return _curCD;
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}
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void remove(int res);
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void removeAll();
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// ----console commands
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void killAll(bool wantInfo);
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void killAllObjects(bool wantInfo);
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};
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} // End of namespace Sword2
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#endif
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