/*

  * This file is part of FFmpeg.

  *

  * FFmpeg is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *

  * FFmpeg is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public

  * License along with FFmpeg; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
  * @file
  * Null bitstream filter -- pass the input through unchanged.
  */
 
 #include "avcodec.h"
 #include "bsf.h"
 
 static int null_filter(AVBSFContext *ctx, AVPacket *out)
 {
     AVPacket *in;
     int ret;
 
     ret = ff_bsf_get_packet(ctx, &in);
     if (ret < 0)
         return ret;
     av_packet_move_ref(out, in);
     av_packet_free(&in);
     return 0;
 }
 
 const AVBitStreamFilter ff_null_bsf = {
     .name           = "null",
     .filter         = null_filter,
 };