FFmpeg
af_anull.c
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1 /*
2  * Copyright (c) 2010 S.N. Hemanth Meenakshisundaram <smeenaks@ucsd.edu>
3  * This file is part of FFmpeg.
4  *
5  * FFmpeg is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * FFmpeg is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with FFmpeg; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 /**
21  * @file
22  * null audio filter
23  */
24 
25 #include "audio.h"
26 #include "avfilter.h"
27 #include "filters.h"
28 #include "libavutil/internal.h"
29 
31  .name = "anull",
32  .description = NULL_IF_CONFIG_SMALL("Pass the source unchanged to the output."),
36 };
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: filters.h:262
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:205
filters.h
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: filters.h:263
ff_af_anull
const AVFilter ff_af_anull
Definition: af_anull.c:30
ff_audio_default_filterpad
const AVFilterPad ff_audio_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_AUDIO.
Definition: audio.c:34
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:94
internal.h
AVFilter
Filter definition.
Definition: avfilter.h:201
avfilter.h
AVFILTER_FLAG_METADATA_ONLY
#define AVFILTER_FLAG_METADATA_ONLY
The filter is a "metadata" filter - it does not modify the frame data in any way.
Definition: avfilter.h:168
audio.h