git.sesse.net Git - ffmpeg/blob - libavcodec/utvideodsp.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <stdint.h>
  20
  21 #include "config.h"
  22 #include "libavutil/attributes.h"
  23 #include "utvideodsp.h"
  24
  25 static void restore_rgb_planes_c(uint8_t *src_r,
  26                                  uint8_t *src_g,
  27                                  uint8_t *src_b,
  28                                  ptrdiff_t linesize_r,
  29                                  ptrdiff_t linesize_g,
  30                                  ptrdiff_t linesize_b,
  31                                  int width, int height)
  32 {
  33     uint8_t r, g, b;
  34     int i, j;
  35
  36     for (j = 0; j < height; j++) {
  37         for (i = 0; i < width; i++) {
  38             r = src_r[i];
  39             g = src_g[i];
  40             b = src_b[i];
  41             src_r[i] = r + g - 0x80;
  42             src_b[i] = b + g - 0x80;
  43         }
  44         src_r += linesize_r;
  45         src_g += linesize_g;
  46         src_b += linesize_b;
  47     }
  48 }
  49
  50 static void restore_rgb_planes10_c(uint16_t *src_r,
  51                                    uint16_t *src_g,
  52                                    uint16_t *src_b,
  53                                    ptrdiff_t linesize_r,
  54                                    ptrdiff_t linesize_g,
  55                                    ptrdiff_t linesize_b,
  56                                    int width, int height)
  57 {
  58     int r, g, b;
  59     int i, j;
  60
  61     for (j = 0; j < height; j++) {
  62         for (i = 0; i < width; i++) {
  63             r = src_r[i];
  64             g = src_g[i];
  65             b = src_b[i];
  66             src_r[i] = (r + g - 0x200) & 0x3FF;
  67             src_b[i] = (b + g - 0x200) & 0x3FF;
  68         }
  69         src_r += linesize_r;
  70         src_g += linesize_g;
  71         src_b += linesize_b;
  72     }
  73 }
  74
  75 av_cold void ff_utvideodsp_init(UTVideoDSPContext *c)
  76 {
  77     c->restore_rgb_planes   = restore_rgb_planes_c;
  78     c->restore_rgb_planes10 = restore_rgb_planes10_c;
  79
  80     if (ARCH_X86)
  81         ff_utvideodsp_init_x86(c);
  82 }