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avpicture.c
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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 
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 
50 {
51  return av_image_get_buffer_size(pix_fmt, width, height, 1);
52 }
53 
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_free(picture->data[0]);
70 }
71 
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