| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #ifndef AVFILTER_BLACKDETECT_H | ||
| 20 | #define AVFILTER_BLACKDETECT_H | ||
| 21 | |||
| 22 | #include <stddef.h> | ||
| 23 | #include <stdint.h> | ||
| 24 | |||
| 25 | typedef unsigned (*ff_blackdetect_fn)(const uint8_t *src, ptrdiff_t stride, | ||
| 26 | ptrdiff_t width, ptrdiff_t height, | ||
| 27 | unsigned threshold); | ||
| 28 | |||
| 29 | ff_blackdetect_fn ff_blackdetect_get_fn_x86(int depth); | ||
| 30 | |||
| 31 | 3 | static unsigned count_pixels8_c(const uint8_t *src, ptrdiff_t stride, | |
| 32 | ptrdiff_t width, ptrdiff_t height, | ||
| 33 | unsigned threshold) | ||
| 34 | { | ||
| 35 | 3 | unsigned int counter = 0; | |
| 36 |
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51 | while (height--) { |
| 37 |
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11952 | for (int x = 0; x < width; x++) |
| 38 | 11904 | counter += src[x] <= threshold; | |
| 39 | 48 | src += stride; | |
| 40 | } | ||
| 41 | 3 | return counter; | |
| 42 | } | ||
| 43 | |||
| 44 | 3 | static unsigned count_pixels16_c(const uint8_t *src, ptrdiff_t stride, | |
| 45 | ptrdiff_t width, ptrdiff_t height, | ||
| 46 | unsigned threshold) | ||
| 47 | { | ||
| 48 | 3 | unsigned int counter = 0; | |
| 49 |
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51 | while (height--) { |
| 50 | 48 | const uint16_t *src16 = (const uint16_t *) src; | |
| 51 |
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5808 | for (int x = 0; x < width; x++) |
| 52 | 5760 | counter += src16[x] <= threshold; | |
| 53 | 48 | src += stride; | |
| 54 | } | ||
| 55 | 3 | return counter; | |
| 56 | } | ||
| 57 | |||
| 58 | |||
| 59 | 26 | static inline ff_blackdetect_fn ff_blackdetect_get_fn(int depth) | |
| 60 | { | ||
| 61 | 26 | ff_blackdetect_fn fn = NULL; | |
| 62 | #if ARCH_X86 | ||
| 63 | 26 | fn = ff_blackdetect_get_fn_x86(depth); | |
| 64 | #endif | ||
| 65 | |||
| 66 |
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26 | if (!fn) |
| 67 |
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24 | fn = depth == 8 ? count_pixels8_c : count_pixels16_c; |
| 68 | 26 | return fn; | |
| 69 | } | ||
| 70 | |||
| 71 | #endif /* AVFILTER_BLACKDETECT_H */ | ||
| 72 |