/*
  * Header file for hardcoded motionpixels 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>
 
 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_cropTbl + 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 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 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 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 */