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65 lines
2.3 KiB
65 lines
2.3 KiB
#ifndef LPC_BITSTREAM_H1102530057_INCLUDE_GUARD_
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#define LPC_BITSTREAM_H1102530057_INCLUDE_GUARD_
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/* This file is part of indexlib.
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* Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org>
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*
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* Indexlib is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation and available as file
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* GPL_V2 which is distributed along with indexlib.
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*
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* Indexlib is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of this program with any edition of
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* the Qt library by Trolltech AS, Norway (or with modified versions
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* of Qt that use the same license as Qt), and distribute linked
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* combinations including the two. You must obey the GNU General
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* Public License in all respects for all of the code used other than
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* Qt. If you modify this file, you may extend this exception to
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* your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from
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* your version.
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*/
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#include <vector>
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#include <inttypes.h>
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struct bitstream {
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public:
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bitstream( const unsigned char* data, unsigned size );
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bitstream( unsigned char* data, unsigned size );
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bitstream& operator << ( uint16_t );
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bitstream& operator << ( uint32_t );
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bitstream& operator >> ( uint16_t& );
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bitstream& operator >> ( uint32_t& );
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void putback( uint16_t );
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void putback( uint32_t );
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unsigned nbytes() const { return size_ / 8 + bool( size_ % 8 ); }
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unsigned nbits() const { return size_; }
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const unsigned char* as_byte_vector() const { return &bytes_[ 0 ]; }
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private:
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bool getbit();
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unsigned char* bytes_;
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const bool writeable_;
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const unsigned size_;
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unsigned cur_;
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void putbit( bool );
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};
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template <typename T>
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unsigned bits_for();
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#endif /* LPC_BITSTREAM_H1102530057_INCLUDE_GUARD_ */
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