repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 15 | * | |
| 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 | |
| 19 | */ | |
| 20 | ||
| 21 | #ifndef AVCODEC_UNARY_H | |
| 22 | #define AVCODEC_UNARY_H | |
| 23 | ||
| 24 | #include "get_bits.h" | |
| 25 | ||
| 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 | |
| 32 | */ | |
| 33 | static inline int get_unary(GetBitContext *gb, int stop, int len) | |
| 34 | { | |
| 35 | int i; | |
| 36 | ||
| 37 | for(i = 0; i < len && get_bits1(gb) != stop; i++); | |
| 38 | return i; | |
| 39 | } | |
| 40 | ||
| 41 | /** | |
| 42 | * Get unary code terminated by a 0 with a maximum length of 33 | |
| 43 | * @param gb GetBitContext | |
| 44 | * @return Unary length/index | |
| 45 | */ | |
| 46 | static inline int get_unary_0_33(GetBitContext *gb) | |
| 47 | { | |
| 48 | return get_unary(gb, 0, 33); | |
| 49 | } | |
| 50 | ||
| 51 | static inline int get_unary_0_9(GetBitContext *gb) | |
| 52 | { | |
| 53 | return get_unary(gb, 0, 9); | |
| 54 | } | |
| 55 | ||
| 56 | #endif /* AVCODEC_UNARY_H */ |