repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Header file for hardcoded motionpixels RGB to YUV table | |
| 3 | * | |
| 4 | * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> | |
| 5 | * | |
| 6 | * This file is part of FFmpeg. | |
| 7 | * | |
| 8 | * FFmpeg is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU Lesser General Public | |
| 10 | * License as published by the Free Software Foundation; either | |
| 11 | * version 2.1 of the License, or (at your option) any later version. | |
| 12 | * | |
| 13 | * FFmpeg is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 | * Lesser General Public License for more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU Lesser General Public | |
| 19 | * License along with FFmpeg; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef AVCODEC_MOTIONPIXELS_TABLEGEN_H | |
| 24 | #define AVCODEC_MOTIONPIXELS_TABLEGEN_H | |
| 25 | ||
| 26 | #include <stdint.h> | |
| 27 | #include "libavutil/attributes.h" | |
| 28 | ||
| 29 | typedef struct YuvPixel { | |
| 30 | int8_t y, v, u; | |
| 31 | } YuvPixel; | |
| 32 | ||
| 33 | static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) { | |
| 34 | const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; | |
| 35 | int r, g, b; | |
| 36 | ||
| 37 | r = (1000 * y + 701 * v) / 1000; | |
| 38 | g = (1000 * y - 357 * v - 172 * u) / 1000; | |
| 39 | b = (1000 * y + 886 * u) / 1000; | |
| 40 | if (clip_rgb) | |
| 41 | return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3); | |
| 42 | if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32) | |
| 43 | return (r << 10) | (g << 5) | b; | |
| 44 | return 1 << 15; | |
| 45 | } | |
| 46 | ||
| 47 | #if CONFIG_HARDCODED_TABLES | |
| 48 | #define motionpixels_tableinit() | |
| 49 | #include "libavcodec/motionpixels_tables.h" | |
| 50 | #else | |
| 51 | static YuvPixel mp_rgb_yuv_table[1 << 15]; | |
| 52 | ||
| 53 | static av_cold void mp_set_zero_yuv(YuvPixel *p) | |
| 54 | { | |
| 55 | int i, j; | |
| 56 | ||
| 57 | for (i = 0; i < 31; ++i) { | |
| 58 | for (j = 31; j > i; --j) | |
| 59 | if (!(p[j].u | p[j].v | p[j].y)) | |
| 60 | p[j] = p[j - 1]; | |
| 61 | for (j = 0; j < 31 - i; ++j) | |
| 62 | if (!(p[j].u | p[j].v | p[j].y)) | |
| 63 | p[j] = p[j + 1]; | |
| 64 | } | |
| 65 | } | |
| 66 | ||
| 67 | static av_cold void mp_build_rgb_yuv_table(YuvPixel *p) | |
| 68 | { | |
| 69 | int y, v, u, i; | |
| 70 | ||
| 71 | for (y = 0; y <= 31; ++y) | |
| 72 | for (v = -31; v <= 31; ++v) | |
| 73 | for (u = -31; u <= 31; ++u) { | |
| 74 | i = mp_yuv_to_rgb(y, v, u, 0); | |
| 75 | if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) { | |
| 76 | p[i].y = y; | |
| 77 | p[i].v = v; | |
| 78 | p[i].u = u; | |
| 79 | } | |
| 80 | } | |
| 81 | for (i = 0; i < 1024; ++i) | |
| 82 | mp_set_zero_yuv(p + i * 32); | |
| 83 | } | |
| 84 | ||
| 85 | static av_cold void motionpixels_tableinit(void) | |
| 86 | { | |
| 87 | if (!mp_rgb_yuv_table[0].u) | |
| 88 | mp_build_rgb_yuv_table(mp_rgb_yuv_table); | |
| 89 | } | |
| 90 | #endif /* CONFIG_HARDCODED_TABLES */ | |
| 91 | ||
| 92 | #endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */ |