libavfilter/af_anull.c

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav 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  * Libav 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 Libav; 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  * null audio filter
  22  */
  23
  24 #include "audio.h"
  25 #include "avfilter.h"
  26 #include "internal.h"
  27 #include "libavutil/internal.h"
  28
  29 static const AVFilterPad avfilter_af_anull_inputs[] = {
  30     {
  31         .name             = "default",
  32         .type             = AVMEDIA_TYPE_AUDIO,
  33         .get_audio_buffer = ff_null_get_audio_buffer,
  34     },
  35     { NULL }
  36 };
  37
  38 static const AVFilterPad avfilter_af_anull_outputs[] = {
  39     {
  40         .name = "default",
  41         .type = AVMEDIA_TYPE_AUDIO,
  42     },
  43     { NULL }
  44 };
  45
  46 AVFilter avfilter_af_anull = {
  47     .name      = "anull",
  48     .description = NULL_IF_CONFIG_SMALL("Pass the source unchanged to the output."),
  49
  50     .priv_size = 0,
  51
  52     .inputs    = avfilter_af_anull_inputs,
  53
  54     .outputs   = avfilter_af_anull_outputs,
  55 };