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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004-2005 The ScummVM project
*
* The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
// RSC Resource file management header file
#ifndef SAGA_RSCFILE_H__
#define SAGA_RSCFILE_H__
#include "backends/fs/fs.h"
#include "common/file.h"
namespace Saga {
#define RSC_TABLEINFO_SIZE 8
#define RSC_TABLEENTRY_SIZE 8
#define RSC_MIN_FILESIZE (RSC_TABLEINFO_SIZE + RSC_TABLEENTRY_SIZE + 1)
//TODO: good PATCH.RE_ support
struct ResourceData {
size_t offset;
size_t size;
Common::File *patchFile;
};
struct ResourceContext {
const char *fileName;
uint16 fileType;
Common::File *file;
int serial;
bool isBigEndian;
ResourceData *table;
size_t count;
Common::File *getFile(ResourceData *resourceData) const {
if (resourceData->patchFile != NULL) {
return resourceData->patchFile;
} else {
return file;
}
}
};
class Resource {
public:
Resource(SagaEngine *vm);
~Resource();
bool createContexts();
void clearContexts();
void loadResource(ResourceContext *context, uint32 resourceId, byte*&resourceBuffer, size_t &resourceSize);
size_t getResourceSize(ResourceContext *context, uint32 resourceId);
uint32 convertResourceId(uint32 resourceId);
ResourceContext *getContext(uint16 fileType, int serial = 0) {
int i;
for (i = 0; i < _contextsCount; i++) {
if ((_contexts[i].fileType & fileType) && _contexts[i].serial == serial) {
return &_contexts[i];
}
}
return NULL;
}
bool validResourceId(ResourceContext *context, uint32 resourceId) const {
return (resourceId < context->count);
}
size_t getResourceSize(ResourceContext *context, uint32 resourceId) const {
return getResourceData(context, resourceId)->size;
}
size_t getResourceOffset(ResourceContext *context, uint32 resourceId) const {
return getResourceData(context, resourceId)->offset;
}
ResourceData *getResourceData(ResourceContext *context, uint32 resourceId) const {
if (!validResourceId(context, resourceId)) {
error("Resource::getResourceData() wrong resourceId %d", resourceId);
}
return &context->table[resourceId];
}
private:
SagaEngine *_vm;
ResourceContext *_contexts;
int _contextsCount;
bool loadContext(ResourceContext *context);
};
} // End of namespace Saga
#endif
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