yading@10: /*
yading@10:  * copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_UNARY_H
yading@10: #define AVCODEC_UNARY_H
yading@10: 
yading@10: #include "get_bits.h"
yading@10: 
yading@10: /**
yading@10:  * Get unary code of limited length
yading@10:  * @param gb GetBitContext
yading@10:  * @param[in] stop The bitstop value (unary code of 1's or 0's)
yading@10:  * @param[in] len Maximum length
yading@10:  * @return Unary length/index
yading@10:  */
yading@10: static inline int get_unary(GetBitContext *gb, int stop, int len)
yading@10: {
yading@10:     int i;
yading@10: 
yading@10:     for(i = 0; i < len && get_bits1(gb) != stop; i++);
yading@10:     return i;
yading@10: }
yading@10: 
yading@10: /**
yading@10:  * Get unary code terminated by a 0 with a maximum length of 33
yading@10:  * @param gb GetBitContext
yading@10:  * @return Unary length/index
yading@10:  */
yading@10: static inline int get_unary_0_33(GetBitContext *gb)
yading@10: {
yading@10:     return get_unary(gb, 0, 33);
yading@10: }
yading@10: 
yading@10: static inline int get_unary_0_9(GetBitContext *gb)
yading@10: {
yading@10:     return get_unary(gb, 0, 9);
yading@10: }
yading@10: 
yading@10: #endif /* AVCODEC_UNARY_H */