/* * Header file for hardcoded motion pixels RGB to YUV table * * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_MOTIONPIXELS_TABLEGEN_H #define AVCODEC_MOTIONPIXELS_TABLEGEN_H #include <stdint.h> #include "libavutil/attributes.h" typedef struct YuvPixel { int8_t y, v, u; } YuvPixel; static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) { const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; int r, g, b; r = (1000 * y + 701 * v) / 1000; g = (1000 * y - 357 * v - 172 * u) / 1000; b = (1000 * y + 886 * u) / 1000; if (clip_rgb) return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3); if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32) return (r << 10) | (g << 5) | b; return 1 << 15; } #if CONFIG_HARDCODED_TABLES #define motionpixels_tableinit() #include "libavcodec/motionpixels_tables.h" #else static YuvPixel mp_rgb_yuv_table[1 << 15]; static av_cold void mp_set_zero_yuv(YuvPixel *p) { int i, j; for (i = 0; i < 31; ++i) { for (j = 31; j > i; --j) if (!(p[j].u | p[j].v | p[j].y)) p[j] = p[j - 1]; for (j = 0; j < 31 - i; ++j) if (!(p[j].u | p[j].v | p[j].y)) p[j] = p[j + 1]; } } static av_cold void mp_build_rgb_yuv_table(YuvPixel *p) { int y, v, u, i; for (y = 0; y <= 31; ++y) for (v = -31; v <= 31; ++v) for (u = -31; u <= 31; ++u) { i = mp_yuv_to_rgb(y, v, u, 0); if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) { p[i].y = y; p[i].v = v; p[i].u = u; } } for (i = 0; i < 1024; ++i) mp_set_zero_yuv(p + i * 32); } static av_cold void motionpixels_tableinit(void) { if (!mp_rgb_yuv_table[0].u) mp_build_rgb_yuv_table(mp_rgb_yuv_table); } #endif /* CONFIG_HARDCODED_TABLES */ #endif /* AVCODEC_MOTIONPIXELS_TABLEGEN_H */