2 * Header file for hardcoded motionpixels RGB to YUV table
4 * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
6 * This file is part of FFmpeg.
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.
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.
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
23 #ifndef AVCODEC_MOTIONPIXELS_TABLEGEN_H
24 #define AVCODEC_MOTIONPIXELS_TABLEGEN_H
28 typedef struct YuvPixel {
32 static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) {
33 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
36 r = (1000 * y + 701 * v) / 1000;
37 g = (1000 * y - 357 * v - 172 * u) / 1000;
38 b = (1000 * y + 886 * u) / 1000;
40 return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3);
41 if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32)
42 return (r << 10) | (g << 5) | b;
46 #if CONFIG_HARDCODED_TABLES
47 #define motionpixels_tableinit()
48 #include "libavcodec/motionpixels_tables.h"
50 static YuvPixel mp_rgb_yuv_table[1 << 15];
52 static void mp_set_zero_yuv(YuvPixel *p)
56 for (i = 0; i < 31; ++i) {
57 for (j = 31; j > i; --j)
58 if (!(p[j].u | p[j].v | p[j].y))
60 for (j = 0; j < 31 - i; ++j)
61 if (!(p[j].u | p[j].v | p[j].y))
66 static void mp_build_rgb_yuv_table(YuvPixel *p)
70 for (y = 0; y <= 31; ++y)
71 for (v = -31; v <= 31; ++v)
72 for (u = -31; u <= 31; ++u) {
73 i = mp_yuv_to_rgb(y, v, u, 0);
74 if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) {
80 for (i = 0; i < 1024; ++i)
81 mp_set_zero_yuv(p + i * 32);
84 static void motionpixels_tableinit(void)
86 if (!mp_rgb_yuv_table[0].u)
87 mp_build_rgb_yuv_table(mp_rgb_yuv_table);
89 #endif /* CONFIG_HARDCODED_TABLES */
91 #endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */