mirror of
https://github.com/libretro/scummvm.git
synced 2025-02-13 23:43:34 +00:00
87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
/* 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 MADS_COMPRESSION_H
|
|
#define MADS_COMPRESSION_H
|
|
|
|
#include "common/memstream.h"
|
|
#include "common/stream.h"
|
|
|
|
#include "mads/mads.h"
|
|
|
|
namespace MADS {
|
|
|
|
enum CompressionType { COMPRESS_NONE = 0, COMPRESS_FAB = 1 };
|
|
|
|
struct MadsPackEntry {
|
|
public:
|
|
CompressionType _type;
|
|
byte _priority;
|
|
uint32 _size;
|
|
uint32 _compressedSize;
|
|
byte *_data;
|
|
};
|
|
|
|
class MadsPack {
|
|
private:
|
|
MadsPackEntry *_items;
|
|
int _count;
|
|
int _dataOffset;
|
|
|
|
void initialize(Common::SeekableReadStream *stream);
|
|
public:
|
|
static bool isCompressed(Common::SeekableReadStream *stream);
|
|
MadsPack(Common::SeekableReadStream *stream);
|
|
MadsPack(const Common::String &resourceName, MADSEngine *_vm);
|
|
~MadsPack();
|
|
|
|
int getCount() const { return _count; }
|
|
MadsPackEntry &getItem(int index) const {
|
|
assert(index < _count);
|
|
return _items[index]; }
|
|
MadsPackEntry &operator[](int index) const {
|
|
assert(index < _count);
|
|
return _items[index];
|
|
}
|
|
Common::MemoryReadStream *getItemStream(int index) {
|
|
assert(index < _count);
|
|
return new Common::MemoryReadStream(_items[index]._data, _items[index]._size,
|
|
DisposeAfterUse::NO);
|
|
}
|
|
int getDataOffset() const { return _dataOffset; }
|
|
};
|
|
|
|
class FabDecompressor {
|
|
private:
|
|
int _bitsLeft;
|
|
uint32 _bitBuffer;
|
|
const byte *_srcData, *_srcP;
|
|
int _srcSize;
|
|
|
|
int getBit();
|
|
public:
|
|
void decompress(const byte *srcData, int srcSize, byte *destData, int destSize);
|
|
};
|
|
|
|
} // End of namespace MADS
|
|
|
|
#endif
|