2 * This file is part of FFmpeg.
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.
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.
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
20 * @file libavfilter/vf_null.c
26 static AVFilterPicRef *get_video_buffer(AVFilterLink *link, int perms,
29 return avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
32 static void start_frame(AVFilterLink *link, AVFilterPicRef *picref)
34 avfilter_start_frame(link->dst->outputs[0], picref);
37 static void end_frame(AVFilterLink *link)
39 avfilter_end_frame(link->dst->outputs[0]);
42 AVFilter avfilter_vf_null = {
44 .description = NULL_IF_CONFIG_SMALL("Pass the source unchanged to the output."),
48 .inputs = (AVFilterPad[]) {{ .name = "default",
49 .type = CODEC_TYPE_VIDEO,
50 .get_video_buffer = get_video_buffer,
51 .start_frame = start_frame,
52 .end_frame = end_frame },
55 .outputs = (AVFilterPad[]) {{ .name = "default",
56 .type = CODEC_TYPE_VIDEO, },