1/* 2 * Header file for hardcoded motionpixels RGB to YUV table 3 * 4 * Copyright (c) 2009 Reimar D��ffinger <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 MOTIONPIXELS_TABLEGEN_H 24#define MOTIONPIXELS_TABLEGEN_H 25 26#include <stdint.h> 27 28typedef struct YuvPixel { 29 int8_t y, v, u; 30} YuvPixel; 31 32static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) { 33 static const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; 34 int r, g, b; 35 36 r = (1000 * y + 701 * v) / 1000; 37 g = (1000 * y - 357 * v - 172 * u) / 1000; 38 b = (1000 * y + 886 * u) / 1000; 39 if (clip_rgb) 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; 43 return 1 << 15; 44} 45 46#if CONFIG_HARDCODED_TABLES 47#define motionpixels_tableinit() 48#include "libavcodec/motionpixels_tables.h" 49#else 50static YuvPixel mp_rgb_yuv_table[1 << 15]; 51 52static void mp_set_zero_yuv(YuvPixel *p) 53{ 54 int i, j; 55 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)) 59 p[j] = p[j - 1]; 60 for (j = 0; j < 31 - i; ++j) 61 if (!(p[j].u | p[j].v | p[j].y)) 62 p[j] = p[j + 1]; 63 } 64} 65 66static void mp_build_rgb_yuv_table(YuvPixel *p) 67{ 68 int y, v, u, i; 69 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)) { 75 p[i].y = y; 76 p[i].v = v; 77 p[i].u = u; 78 } 79 } 80 for (i = 0; i < 1024; ++i) 81 mp_set_zero_yuv(p + i * 32); 82} 83 84static void motionpixels_tableinit(void) 85{ 86 if (!mp_rgb_yuv_table[0].u) 87 mp_build_rgb_yuv_table(mp_rgb_yuv_table); 88} 89#endif /* CONFIG_HARDCODED_TABLES */ 90 91#endif /* MOTIONPIXELS_TABLEGEN_H */ 92