resource.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef TOLTECS_RESOURCE_H
#define TOLTECS_RESOURCE_H

#include "common/file.h"
#include "common/hashmap.h"
#include "common/hash-str.h"

#include "engines/engine.h"

namespace Toltecs {

const uint kMaxCacheItems = 1024;
const uint kMaxCacheSize = 8 * 1024 * 1024; // 8 MB


class ArchiveReader : public Common::File {
public:
    ArchiveReader();
    ~ArchiveReader() override;

    void openArchive(const char *filename);

    // Returns the size of the opened resource
    uint32 openResource(uint resIndex);
    // Closes the resource
    void closeResource();
    // Returns the size of the resource
    uint32 getResourceSize(uint resIndex);

    void dump(uint resIndex);

protected:
    uint32 *_offsets;

};

struct Resource {
    uint32 size;
    byte *data;
};

class ResourceCache {
public:
    ResourceCache(ToltecsEngine *vm);
    ~ResourceCache();

    Resource *load(uint resIndex);
    void purgeCache();

protected:
    typedef Common::HashMap<uint, Resource *> ResourceMap;

    ToltecsEngine *_vm;

    ResourceMap _cache;

};


} // End of namespace Toltecs

#endif /* TOLTECS_H */