libavcodec/imgconvert.c

   1 /*
   2  * Misc image conversion routines
   3  * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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  * misc image conversion routines
  25  */
  26
  27 #include "avcodec.h"
  28 #include "libavutil/pixdesc.h"
  29 #include "libavutil/pixfmt.h"
  30
  31 enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(const enum AVPixelFormat *pix_fmt_list,
  32                                             enum AVPixelFormat src_pix_fmt,
  33                                             int has_alpha, int *loss_ptr){
  34     int i;
  35
  36     enum AVPixelFormat best = AV_PIX_FMT_NONE;
  37     int loss;
  38
  39     for (i=0; pix_fmt_list[i] != AV_PIX_FMT_NONE; i++) {
  40         loss = loss_ptr ? *loss_ptr : 0;
  41         best = av_find_best_pix_fmt_of_2(best, pix_fmt_list[i], src_pix_fmt, has_alpha, &loss);
  42     }
  43
  44     if (loss_ptr)
  45         *loss_ptr = loss;
  46     return best;
  47 }
  48