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
30static 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
45static const AVFilterPad avfilter_vf_copy_inputs[] = {
46    {
47        .name         = "default",
48        .type         = AVMEDIA_TYPE_VIDEO,
49        .filter_frame = filter_frame,
50    },
51    { NULL }
52};
53
54static const AVFilterPad avfilter_vf_copy_outputs[] = {
55    {
56        .name = "default",
57        .type = AVMEDIA_TYPE_VIDEO,
58    },
59    { NULL }
60};
61
62AVFilter ff_vf_copy = {
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};
68