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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2006 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 SCUMM_SMUSH_CHUNK_H
#define SCUMM_SMUSH_CHUNK_H
#include "common/scummsys.h"
#include "common/str.h"
#include "common/stream.h"
namespace Scumm {
class BaseScummFile;
class Chunk : public Common::SeekableReadStream {
public:
typedef uint32 type;
virtual type getType() const = 0;
virtual Chunk *subBlock() = 0;
virtual void reseek() = 0;
};
// Common functionality for concrete chunks (FileChunk, MemoryChunk)
class BaseChunk : public Chunk {
protected:
Chunk::type _type;
uint32 _size;
uint32 _curPos;
Common::String _name;
BaseChunk();
public:
Chunk::type getType() const;
uint32 size() const;
bool eos() const;
uint32 pos() const;
void seek(int32 delta, int dir);
};
class FileChunk : public BaseChunk {
private:
BaseScummFile *_data;
bool _deleteData;
uint32 _offset;
FileChunk(BaseScummFile *data, int offset);
public:
FileChunk(const Common::String &name, int offset = 0);
virtual ~FileChunk();
Chunk *subBlock();
void reseek();
uint32 read(void *buffer, uint32 size);
};
class MemoryChunk : public BaseChunk {
private:
byte *_data;
public:
MemoryChunk(byte *data);
Chunk *subBlock();
void reseek();
uint32 read(void *buffer, uint32 size);
};
} // End of namespace Scumm
#endif
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