dimuse_bndmgr.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 SCUMM_IMUSE_DIGI_BUNDLE_MGR_H
#define SCUMM_IMUSE_DIGI_BUNDLE_MGR_H

#include "common/scummsys.h"
#include "common/file.h"
#include "scumm/imuse_digi/dimuse_defs.h"

namespace Scumm {

class BaseScummFile;

class BundleDirCache {
public:
    struct AudioTable {
        char filename[24];
        int32 offset;
        int32 size;
    };

    struct IndexNode {
        char filename[24];
        int32 index;
    };

private:

    struct FileDirCache {
        char fileName[20];
        AudioTable *bundleTable;
        int32 numFiles;
        bool isCompressed;
        IndexNode *indexTable;
    } _bundleDirCache[4];

    const ScummEngine *_vm;
public:
    BundleDirCache(const ScummEngine *vm);
    ~BundleDirCache();

    int matchFile(const char *filename);
    AudioTable *getTable(int slot);
    IndexNode *getIndexTable(int slot);
    int32 getNumFiles(int slot);
    bool isSndDataExtComp(int slot);
};

class BundleMgr {

private:
    struct CompTable {
        int32 offset;
        int32 size;
        int32 codec;
    };

    BundleDirCache *_cache;
    BundleDirCache::AudioTable *_bundleTable;
    BundleDirCache::IndexNode *_indexTable = nullptr;
    CompTable *_compTable;

    int _numFiles = 0;
    int _numCompItems = 0;
    int _lastBlockDecompressedSize = 0;
    int _curSampleId = 0;
    int _curDecompressedFilePos = 0;
    BaseScummFile *_file;
    bool _compTableLoaded = 0;
    bool _isUncompressed = 0;
    int _fileBundleId = 0;
    byte _compOutputBuff[0x2000] = {};
    byte *_compInputBuff = nullptr;
    int _outputSize = 0;
    int _lastBlock = 0;
    bool loadCompTable(int32 index);

public:

    BundleMgr(const ScummEngine *vm, BundleDirCache *_cache);
    ~BundleMgr();

    bool open(const char *filename, bool &isCompressed, bool errorFlag = false);
    void close();
    Common::SeekableReadStream *getFile(const char *filename, int32 &offset, int32 &size);
    int32 seekFile(int32 offset, int size);
    int32 readFile(const char *name, int32 size, byte **compFinal, bool headerOutside);
    bool isExtCompBun(byte gameId);
};

} // End of namespace Scumm

#endif