/* ScummVM - Scumm Interpreter * Copyright (C) 2004 Ivan Dubrov * Copyright (C) 2004-2006 The ScummVM project * * 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/stdafx.h" #include "common/endian.h" #include "common/file.h" namespace Gob { #define MAX_FILES 30 #define MAX_DATA_FILES 8 #define MAX_SLOT_COUNT 4 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(char *source, char *dest); void openDataFile(const char *src, bool itk = 0); void closeDataFile(bool itk = 0); char *getUnpackedData(const char *name); void closeData(int16 handle); int16 openData(const char *path, Common::File::AccessMode mode = Common::File::kFileReadMode); int32 readData(int16 handle, char *buf, uint16 size); byte readByte(int16 handle); uint16 readUint16(int16 handle); uint32 readUint32(int16 handle); int32 writeData(int16 handle, char *buf, uint16 size); void seekData(int16 handle, int32 pos, int16 from); uint32 getPos(int16 handle); int32 getDataSize(const char *name); char *getData(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::AccessMode mode = Common::File::kFileReadMode); Common::File *file_getHandle(int16 handle); int16 getChunk(const char *chunkName); char freeChunk(int16 handle); int32 readChunk(int16 handle, char *buf, uint16 size); int16 seekChunk(int16 handle, int32 pos, int16 from); uint32 getChunkPos(int16 handle); int32 getChunkSize(const char *chunkName); }; } // End of namespace Gob #endif // GOB_DATAIO_H