ffmpeg/libavcodec/avpicture.c

   1 /*
   2  * AVPicture management 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  * AVPicture management routines
  25  */
  26
  27 #include "avcodec.h"
  28 #include "internal.h"
  29 #include "libavutil/common.h"
  30 #include "libavutil/pixdesc.h"
  31 #include "libavutil/imgutils.h"
  32 #include "libavutil/colorspace.h"
  33
  34 int avpicture_fill(AVPicture *picture, const uint8_t *ptr,
  35                    enum AVPixelFormat pix_fmt, int width, int height)
  36 {
  37     return av_image_fill_arrays(picture->data, picture->linesize,
  38                                 ptr, pix_fmt, width, height, 1);
  39 }
  40
  41 int avpicture_layout(const AVPicture* src, enum AVPixelFormat pix_fmt, int width, int height,
  42                      unsigned char *dest, int dest_size)
  43 {
  44     return av_image_copy_to_buffer(dest, dest_size,
  45                                    (const uint8_t * const*)src->data, src->linesize,
  46                                    pix_fmt, width, height, 1);
  47 }
  48
  49 int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height)
  50 {
  51     return av_image_get_buffer_size(pix_fmt, width, height, 1);
  52 }
  53
  54 int avpicture_alloc(AVPicture *picture,
  55                     enum AVPixelFormat pix_fmt, int width, int height)
  56 {
  57     int ret = av_image_alloc(picture->data, picture->linesize,
  58                              width, height, pix_fmt, 1);
  59     if (ret < 0) {
  60         memset(picture, 0, sizeof(AVPicture));
  61         return ret;
  62     }
  63
  64     return 0;
  65 }
  66
  67 void avpicture_free(AVPicture *picture)
  68 {
  69     av_freep(&picture->data[0]);
  70 }
  71
  72 void av_picture_copy(AVPicture *dst, const AVPicture *src,
  73                      enum AVPixelFormat pix_fmt, int width, int height)
  74 {
  75     av_image_copy(dst->data, dst->linesize, (const uint8_t **)src->data,
  76                   src->linesize, pix_fmt, width, height);
  77 }
  78