/*
  * Chomp bitstream filter
  * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
  *
  * 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
  */
 
 #include "avcodec.h"

 #include "bsf.h"

 #include "internal.h"
 

 static int chomp_filter(AVBSFContext *ctx, AVPacket *out)

 {

     AVPacket *in;
     int ret;

     ret = ff_bsf_get_packet(ctx, &in);
     if (ret < 0)
         return ret;
 
     while (in->size > 0 && !in->data[in->size - 1])
         in->size--;
 
     av_packet_move_ref(out, in);
     av_packet_free(&in);

 
     return 0;
 }
 
 /**

  * This filter removes a string of NULL bytes from the end of a packet.

  */

 const AVBitStreamFilter ff_chomp_bsf = {

     .name   = "chomp",
     .filter = chomp_filter,

 };