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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * Header file for hardcoded motionpixels RGB to YUV table |
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| 3 | * |
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| 4 | * Copyright (c) 2009 Reimar Döffinger |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #ifndef AVCODEC_MOTIONPIXELS_TABLEGEN_H |
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| 24 | #define AVCODEC_MOTIONPIXELS_TABLEGEN_H |
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| 25 | |||
| 26 | #include |
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| 27 | |||
| 28 | typedef struct YuvPixel { |
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| 29 | int8_t y, v, u; |
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| 30 | } YuvPixel; |
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| 31 | |||
| 32 | static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) { |
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| 33 | const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; |
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| 34 | int r, g, b; |
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| 35 | |||
| 36 | r = (1000 * y + 701 * v) / 1000; |
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| 37 | g = (1000 * y - 357 * v - 172 * u) / 1000; |
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| 38 | b = (1000 * y + 886 * u) / 1000; |
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| 39 | if (clip_rgb) |
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| 40 | return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3); |
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| 41 | if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32) |
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| 42 | return (r << 10) | (g << 5) | b; |
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| 43 | return 1 << 15; |
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| 44 | } |
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| 45 | |||
| 46 | #if CONFIG_HARDCODED_TABLES |
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| 47 | #define motionpixels_tableinit() |
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| 48 | #include "libavcodec/motionpixels_tables.h" |
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| 49 | #else |
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| 50 | static YuvPixel mp_rgb_yuv_table[1 << 15]; |
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| 51 | |||
| 52 | static void mp_set_zero_yuv(YuvPixel *p) |
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| 53 | { |
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| 54 | int i, j; |
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| 55 | |||
| 56 | for (i = 0; i < 31; ++i) { |
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| 57 | for (j = 31; j > i; --j) |
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| 58 | if (!(p[j].u | p[j].v | p[j].y)) |
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| 59 | p[j] = p[j - 1]; |
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| 60 | for (j = 0; j < 31 - i; ++j) |
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| 61 | if (!(p[j].u | p[j].v | p[j].y)) |
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| 62 | p[j] = p[j + 1]; |
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| 63 | } |
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| 64 | } |
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| 65 | |||
| 66 | static void mp_build_rgb_yuv_table(YuvPixel *p) |
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| 67 | { |
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| 68 | int y, v, u, i; |
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| 69 | |||
| 70 | for (y = 0; y <= 31; ++y) |
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| 71 | for (v = -31; v <= 31; ++v) |
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| 72 | for (u = -31; u <= 31; ++u) { |
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| 73 | i = mp_yuv_to_rgb(y, v, u, 0); |
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| 74 | if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) { |
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| 75 | p[i].y = y; |
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| 76 | p[i].v = v; |
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| 77 | p[i].u = u; |
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| 78 | } |
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| 79 | } |
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| 80 | for (i = 0; i < 1024; ++i) |
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| 81 | mp_set_zero_yuv(p + i * 32); |
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| 82 | } |
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| 83 | |||
| 84 | static void motionpixels_tableinit(void) |
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| 85 | { |
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| 86 | if (!mp_rgb_yuv_table[0].u) |
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| 87 | mp_build_rgb_yuv_table(mp_rgb_yuv_table); |
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| 88 | } |
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| 89 | #endif /* CONFIG_HARDCODED_TABLES */ |
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| 90 | |||
| 91 | #endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */ |