libavcodec/utvideo.c

   1 /*
   2  * Common Ut Video code
   3  * Copyright (c) 2011 Konstantin Shishkov
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * Libav is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with Libav; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * Common Ut Video code
  25  */
  26
  27 #include "utvideo.h"
  28
  29 #if FF_API_PRIVATE_OPT
  30 const int ff_ut_pred_order[5] = {
  31     PRED_LEFT, PRED_MEDIAN, PRED_MEDIAN, PRED_NONE, PRED_GRADIENT
  32 };
  33 #endif
  34
  35 const int ff_ut_rgb_order[4]  = { 1, 2, 0, 3 }; // G, B, R, A
  36
  37 int ff_ut_huff_cmp_len(const void *a, const void *b)
  38 {
  39     const HuffEntry *aa = a, *bb = b;
  40     return (aa->len - bb->len)*256 + aa->sym - bb->sym;
  41 }
  42
  43 int ff_ut10_huff_cmp_len(const void *a, const void *b)
  44 {
  45     const HuffEntry *aa = a, *bb = b;
  46     return (aa->len - bb->len) * 1024 + aa->sym - bb->sym;
  47 }