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ffmpeg / libavfilter / vf_null.c @ 7b018b1d

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/*
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file libavfilter/vf_null.c
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 * null filter
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 */
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#include "avfilter.h"
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static AVFilterPicRef *get_video_buffer(AVFilterLink *link, int perms, int w, int h)
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{
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    return avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
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}
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static void start_frame(AVFilterLink *link, AVFilterPicRef *picref)
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{
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    avfilter_start_frame(link->dst->outputs[0], picref);
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}
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static void end_frame(AVFilterLink *link)
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{
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    avfilter_end_frame(link->dst->outputs[0]);
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}
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AVFilter avfilter_vf_null = {
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    .name      = "null",
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    .priv_size = 0,
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    .inputs    = (AVFilterPad[]) {{ .name             = "default",
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                                    .type             = CODEC_TYPE_VIDEO,
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                                    .get_video_buffer = get_video_buffer,
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                                    .start_frame      = start_frame,
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                                    .end_frame        = end_frame },
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                                  { .name = NULL}},
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    .outputs   = (AVFilterPad[]) {{ .name             = "default",
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                                    .type             = CODEC_TYPE_VIDEO, },
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                                  { .name = NULL}},
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};