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#ifndef LPC_BITSTREAM_H1102530057_INCLUDE_GUARD_
#define LPC_BITSTREAM_H1102530057_INCLUDE_GUARD_
/* This file is part of indexlib.
* Copyright (C) 2005 Luís Pedro Coelho <[email protected]>
*
* Indexlib is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation and available as file
* GPL_V2 which is distributed along with indexlib.
*
* Indexlib 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
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this program with any edition of
* the Qt library by Trolltech AS, Norway (or with modified versions
* of Qt that use the same license as Qt), and distribute linked
* combinations including the two. You must obey the GNU General
* Public License in all respects for all of the code used other than
* Qt. If you modify this file, you may extend this exception to
* your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from
* your version.
*/
#include <vector>
#include <inttypes.h>
struct bitstream {
public:
bitstream( const unsigned char* data, unsigned size );
bitstream( unsigned char* data, unsigned size );
bitstream& operator << ( uint16_t );
bitstream& operator << ( uint32_t );
bitstream& operator >> ( uint16_t& );
bitstream& operator >> ( uint32_t& );
void putback( uint16_t );
void putback( uint32_t );
unsigned nbytes() const { return size_ / 8 + bool( size_ % 8 ); }
unsigned nbits() const { return size_; }
const unsigned char* as_byte_vector() const { return &bytes_[ 0 ]; }
private:
bool getbit();
unsigned char* bytes_;
const bool writeable_;
const unsigned size_;
unsigned cur_;
void putbit( bool );
};
template <typename T>
unsigned bits_for();
#endif /* LPC_BITSTREAM_H1102530057_INCLUDE_GUARD_ */
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