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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * copyright (c) 2004 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVCODEC_UNARY_H |
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| 22 | #define AVCODEC_UNARY_H |
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| 23 | |||
| 24 | #include "get_bits.h" |
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| 25 | |||
| 26 | /** |
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| 27 | * Get unary code of limited length |
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| 28 | * @param gb GetBitContext |
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| 29 | * @param[in] stop The bitstop value (unary code of 1's or 0's) |
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| 30 | * @param[in] len Maximum length |
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| 31 | * @return Unary length/index |
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| 32 | */ |
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| 33 | static inline int get_unary(GetBitContext *gb, int stop, int len) |
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| 34 | { |
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| 35 | int i; |
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| 36 | |||
| 37 | for(i = 0; i < len && get_bits1(gb) != stop; i++); |
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| 38 | return i; |
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| 39 | } |
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| 40 | |||
| 41 | /** |
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| 42 | * Get unary code terminated by a 0 with a maximum length of 33 |
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| 43 | * @param gb GetBitContext |
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| 44 | * @return Unary length/index |
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| 45 | */ |
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| 46 | static inline int get_unary_0_33(GetBitContext *gb) |
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| 47 | { |
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| 48 | return get_unary(gb, 0, 33); |
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| 49 | } |
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| 50 | |||
| 51 | static inline int get_unary_0_9(GetBitContext *gb) |
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| 52 | { |
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| 53 | return get_unary(gb, 0, 9); |
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| 54 | } |
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| 55 | |||
| 56 | #endif /* AVCODEC_UNARY_H */ |