mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 12:39:56 +00:00
127 lines
3.4 KiB
C++
127 lines
3.4 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
#ifndef GOB_DATAIO_H
|
|
#define GOB_DATAIO_H
|
|
|
|
|
|
#include "common/endian.h"
|
|
|
|
#include "common/file.h"
|
|
|
|
namespace Gob {
|
|
|
|
#define MAX_FILES 30
|
|
#define MAX_DATA_FILES 8
|
|
#define MAX_SLOT_COUNT 8
|
|
|
|
class DataIO;
|
|
|
|
class DataStream : public Common::SeekableReadStream {
|
|
public:
|
|
DataStream(DataIO &io, int16 handle, uint32 dSize, bool dispose = false);
|
|
DataStream(byte *buf, uint32 dSize, bool dispose = true);
|
|
virtual ~DataStream();
|
|
|
|
virtual int32 pos() const;
|
|
virtual int32 size() const;
|
|
|
|
virtual bool seek(int32 offset, int whence = SEEK_SET);
|
|
|
|
virtual bool eos() const;
|
|
|
|
virtual uint32 read(void *dataPtr, uint32 dataSize);
|
|
|
|
private:
|
|
DataIO *_io;
|
|
int16 _handle;
|
|
uint32 _size;
|
|
byte *_data;
|
|
Common::MemoryReadStream *_stream;
|
|
bool _dispose;
|
|
};
|
|
|
|
class DataIO {
|
|
public:
|
|
struct ChunkDesc {
|
|
char chunkName[13];
|
|
uint32 size;
|
|
uint32 offset;
|
|
byte packed;
|
|
ChunkDesc() : size(0), offset(0), packed(0) { chunkName[0] = 0; }
|
|
};
|
|
|
|
int32 unpackData(byte *src, byte *dest);
|
|
|
|
void openDataFile(const char *src, bool itk = 0);
|
|
void closeDataFile(bool itk = 0);
|
|
byte *getUnpackedData(const char *name);
|
|
void closeData(int16 handle);
|
|
int16 openData(const char *path);
|
|
DataStream *openAsStream(int16 handle, bool dispose = false);
|
|
|
|
int32 getDataSize(const char *name);
|
|
byte *getData(const char *path);
|
|
DataStream *getDataStream(const char *path);
|
|
|
|
DataIO(class GobEngine *vm);
|
|
~DataIO();
|
|
|
|
protected:
|
|
Common::File _filesHandles[MAX_FILES];
|
|
struct ChunkDesc *_dataFiles[MAX_DATA_FILES];
|
|
int16 _numDataChunks[MAX_DATA_FILES];
|
|
int16 _dataFileHandles[MAX_DATA_FILES];
|
|
bool _dataFileItk[MAX_DATA_FILES];
|
|
int32 _chunkPos[MAX_SLOT_COUNT * MAX_DATA_FILES];
|
|
int32 _chunkOffset[MAX_SLOT_COUNT * MAX_DATA_FILES];
|
|
int32 _chunkSize[MAX_SLOT_COUNT * MAX_DATA_FILES];
|
|
bool _isCurrentSlot[MAX_SLOT_COUNT * MAX_DATA_FILES];
|
|
int32 _packedSize;
|
|
|
|
class GobEngine *_vm;
|
|
|
|
int16 file_open(const char *path);
|
|
Common::File *file_getHandle(int16 handle);
|
|
const Common::File *file_getHandle(int16 handle) const;
|
|
|
|
int16 getChunk(const char *chunkName);
|
|
char freeChunk(int16 handle);
|
|
int32 readChunk(int16 handle, byte *buf, uint16 size);
|
|
int16 seekChunk(int16 handle, int32 pos, int16 from);
|
|
uint32 getChunkPos(int16 handle) const;
|
|
int32 getChunkSize(const char *chunkName);
|
|
|
|
uint32 getPos(int16 handle);
|
|
void seekData(int16 handle, int32 pos, int16 from);
|
|
int32 readData(int16 handle, byte *buf, uint16 size);
|
|
|
|
friend class DataStream;
|
|
};
|
|
|
|
} // End of namespace Gob
|
|
|
|
#endif // GOB_DATAIO_H
|