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  1. /*
  2.  * Copyright (c) 2010 S.N. Hemanth Meenakshisundaram <smeenaks@ucsd.edu>
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #include "libavutil/internal.h"
  22. #include "avfilter.h"
  23. #include "internal.h"
  24.  
  25. static int null_filter_frame(AVFilterLink *link, AVFrame *frame)
  26. {
  27.     av_frame_free(&frame);
  28.     return 0;
  29. }
  30.  
  31. static const AVFilterPad avfilter_asink_anullsink_inputs[] = {
  32.     {
  33.         .name           = "default",
  34.         .type           = AVMEDIA_TYPE_AUDIO,
  35.         .filter_frame   = null_filter_frame,
  36.     },
  37.     { NULL },
  38. };
  39.  
  40. AVFilter avfilter_asink_anullsink = {
  41.     .name        = "anullsink",
  42.     .description = NULL_IF_CONFIG_SMALL("Do absolutely nothing with the input audio."),
  43.  
  44.     .priv_size = 0,
  45.  
  46.     .inputs    = avfilter_asink_anullsink_inputs,
  47.     .outputs   = NULL,
  48. };
  49.