scummvm/engines/draci/barchive.h
Robert Špalek c4563616ae Added support for sound archives.
We initialize them in the DraciEngine constructor, but don't play any sounds
yet.  Checked that it works for all existing sound files (required several
work-arounds against unspoken specification).

When copying the interface from barchive.h, I decided to remove some const's
from there, because getFile() wasn't really behaving like const.

Removed some static Common::String instances.

svn-id: r44953
2009-10-11 22:30:40 +00:00

99 lines
2.8 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 DRACI_BARCHIVE_H
#define DRACI_BARCHIVE_H
#include "common/str.h"
namespace Draci {
/**
* Represents individual files inside the archive.
*/
struct BAFile {
uint _compLength; ///< Compressed length (the same as _length if the file is uncompressed)
uint _length; ///< Uncompressed length
uint32 _offset; ///< Offset of file inside archive
byte *_data;
byte _crc;
byte _stopper; ///< Not used in BAR files, needed for DFW
/** Releases the file data (for memory considerations) */
void close(void) {
delete[] _data;
_data = NULL;
}
};
class BArchive {
public:
BArchive() : _files(NULL), _fileCount(0), _opened(false) {}
BArchive(const Common::String &path) :
_files(NULL), _fileCount(0), _opened(false) {
openArchive(path);
}
~BArchive() { closeArchive(); }
void openArchive(const Common::String &path);
void closeArchive(void);
uint size() const { return _fileCount; }
/**
* Checks whether there is an archive opened. Should be called before reading
* from the archive to check whether openArchive() succeeded.
*/
bool isOpen() const { return _opened; }
void clearCache();
const BAFile *getFile(uint i);
private:
// Archive header data
static const char _magicNumber[];
static const char _dfwMagicNumber[];
static const uint _archiveHeaderSize = 10;
// File stream header data
static const uint _fileHeaderSize = 6;
Common::String _path; ///< Path to file
BAFile *_files; ///< Internal array of files
uint _fileCount; ///< Number of files in archive
bool _isDFW; ///< True if the archive is in DFW format, false otherwise
bool _opened; ///< True if the archive is opened, false otherwise
void openDFW(const Common::String &path);
BAFile *loadFileDFW(uint i);
BAFile *loadFileBAR(uint i);
};
} // End of namespace Draci
#endif // DRACI_BARCHIVE_H