1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * Additional copyright for this file: 8 * Copyright (C) 1994-1998 Revolution Software Ltd. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License 12 * as published by the Free Software Foundation; either version 2 13 * of the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 23 */ 24 25 #ifndef SWORD2_RESMAN_H 26 #define SWORD2_RESMAN_H 27 28 namespace Common { 29 class File; 30 } 31 32 #define MAX_MEM_CACHE (8 * 1024 * 1024) // we keep up to 8 megs of resource data files in memory 33 #define MAX_res_files 20 34 35 namespace Sword2 { 36 37 class Sword2Engine; 38 39 struct Resource { 40 byte *ptr; 41 uint32 size; 42 uint32 refCount; 43 Resource *next, *prev; 44 }; 45 46 struct ResourceFile { 47 char fileName[20]; 48 int32 numEntries; 49 uint32 *entryTab; 50 uint8 cd; 51 }; 52 53 class ResourceManager { 54 private: 55 Common::File *openCluFile(uint16 fileNum); 56 void readCluIndex(uint16 fileNum, Common::File *file); 57 void removeFromCacheList(Resource *res); 58 void addToCacheList(Resource *res); 59 void checkMemUsage(); 60 61 Sword2Engine *_vm; 62 63 int _curCD; 64 uint32 _totalResFiles; 65 uint32 _totalClusters; 66 67 // Gode generated res-id to res number/rel number conversion table 68 69 uint16 *_resConvTable; 70 ResourceFile _resFiles[MAX_res_files]; 71 Resource *_resList; 72 73 Resource *_cacheStart, *_cacheEnd; 74 uint32 _usedMem; // amount of used memory in bytes 75 76 public: 77 ResourceManager(Sword2Engine *vm); // read in the config file 78 ~ResourceManager(); 79 80 bool init(); 81 getNumResFiles()82 uint32 getNumResFiles() { return _totalResFiles; } getNumClusters()83 uint32 getNumClusters() { return _totalClusters; } getResFiles()84 ResourceFile *getResFiles() { return _resFiles; } getResList()85 Resource *getResList() { return _resList; } 86 87 byte *openResource(uint32 res, bool dump = false); 88 void closeResource(uint32 res); 89 90 bool checkValid(uint32 res); 91 uint32 fetchLen(uint32 res); 92 uint8 fetchType(byte *ptr); fetchType(uint32 res)93 uint8 fetchType(uint32 res) { 94 byte *ptr = openResource(res); 95 uint8 type = fetchType(ptr); 96 closeResource(res); 97 98 return type; 99 } 100 101 byte *fetchName(uint32 res, byte *buf = NULL) { 102 static byte tempbuf[NAME_LEN]; 103 104 if (!buf) 105 buf = tempbuf; 106 107 byte *ptr = openResource(res); 108 memcpy(buf, ptr + 10, NAME_LEN); 109 closeResource(res); 110 111 return buf; 112 } 113 fetchName(byte * ptr)114 byte *fetchName(byte *ptr) { 115 return ptr + 10; 116 } 117 118 // Prompts the user for the specified CD. 119 void askForCD(int cd); 120 setCD(int cd)121 void setCD(int cd) { 122 if (cd) 123 _curCD = cd; 124 } 125 getCD()126 int getCD() { 127 return _curCD; 128 } 129 130 void remove(int res); 131 void removeAll(); 132 133 // ----console commands 134 135 void killAll(bool wantInfo); 136 void killAllObjects(bool wantInfo); 137 }; 138 139 } // End of namespace Sword2 140 141 #endif 142