Rename var: val -> energy
[FFMpeg-mirror/DVCPRO-HD.git] / libavcodec / unary.h
blobabd7a531b1e1dbf3e7e21989bdffcb98abe23d75
1 /*
2 * copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef FFMPEG_UNARY_H
22 #define FFMPEG_UNARY_H
24 #include "bitstream.h"
26 /**
27 * Get unary code of limited length
28 * @param gb GetBitContext
29 * @param[in] stop The bitstop value (unary code of 1's or 0's)
30 * @param[in] len Maximum length
31 * @return Unary length/index
33 static inline int get_unary(GetBitContext *gb, int stop, int len)
35 int i;
37 for(i = 0; i < len && get_bits1(gb) != stop; i++);
38 return i;
41 /**
42 * Get unary code terminated by a 0 with a maximum length of 33
43 * @param gb GetBitContext
44 * @return Unary length/index
46 static inline int get_unary_0_33(GetBitContext *gb)
48 return get_unary(gb, 0, 33);
51 static inline int get_unary_0_9(GetBitContext *gb)
53 return get_unary(gb, 0, 9);
56 #endif /* FFMPEG_UNARY_H */