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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 "internal.h"
  28. #include "libavutil/internal.h"
  29.  
  30. static const AVFilterPad avfilter_af_anull_inputs[] = {
  31.     {
  32.         .name = "default",
  33.         .type = AVMEDIA_TYPE_AUDIO,
  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.     .query_formats = ff_query_formats_all,
  50.     .inputs        = avfilter_af_anull_inputs,
  51.     .outputs       = avfilter_af_anull_outputs,
  52. };
  53.