aboutsummaryrefslogtreecommitdiffstats
path: root/libavfilter/vf_copy.c
blob: 8158414dcf4b8367a420cf555ddc99e0663b8210 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * copy video filter
 */

#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "video.h"

static int query_formats(AVFilterContext *ctx)
{
    return ff_set_common_formats(ctx, ff_formats_pixdesc_filter(0, AV_PIX_FMT_FLAG_HWACCEL));
}

static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
    AVFilterLink *outlink = inlink->dst->outputs[0];
    AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
    int ret;

    if (!out) {
        ret = AVERROR(ENOMEM);
        goto fail;
    }

    ret = av_frame_copy_props(out, in);
    if (ret < 0)
        goto fail;
    ret = av_frame_copy(out, in);
    if (ret < 0)
        goto fail;
    av_frame_free(&in);
    return ff_filter_frame(outlink, out);
fail:
    av_frame_free(&in);
    av_frame_free(&out);
    return ret;
}

static const AVFilterPad avfilter_vf_copy_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
    },
};

const AVFilter ff_vf_copy = {
    .name        = "copy",
    .description = NULL_IF_CONFIG_SMALL("Copy the input video unchanged to the output."),
    .flags       = AVFILTER_FLAG_METADATA_ONLY,
    FILTER_INPUTS(avfilter_vf_copy_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_QUERY_FUNC(query_formats),
};