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vf_copy.c
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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 /**
20  * @file
21  * copy video filter
22  */
23 
24 #include "libavutil/imgutils.h"
25 #include "libavutil/internal.h"
26 #include "avfilter.h"
27 #include "internal.h"
28 #include "video.h"
29 
30 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
31 {
32  AVFilterLink *outlink = inlink->dst->outputs[0];
33  AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
34 
35  if (!out) {
36  av_frame_free(&in);
37  return AVERROR(ENOMEM);
38  }
39  av_frame_copy_props(out, in);
40  av_frame_copy(out, in);
41  av_frame_free(&in);
42  return ff_filter_frame(outlink, out);
43 }
44 
46  {
47  .name = "default",
48  .type = AVMEDIA_TYPE_VIDEO,
49  .filter_frame = filter_frame,
50  },
51  { NULL }
52 };
53 
55  {
56  .name = "default",
57  .type = AVMEDIA_TYPE_VIDEO,
58  },
59  { NULL }
60 };
61 
63  .name = "copy",
64  .description = NULL_IF_CONFIG_SMALL("Copy the input video unchanged to the output."),
65  .inputs = avfilter_vf_copy_inputs,
66  .outputs = avfilter_vf_copy_outputs,
67 };