1/* 2 * Chomp bitstream filter 3 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "bsf.h" 23#include "bsf_internal.h" 24 25static int chomp_filter(AVBSFContext *ctx, AVPacket *pkt) 26{ 27 int ret; 28 29 ret = ff_bsf_get_packet_ref(ctx, pkt); 30 if (ret < 0) 31 return ret; 32 33 while (pkt->size > 0 && !pkt->data[pkt->size - 1]) 34 pkt->size--; 35 36 return 0; 37} 38 39/** 40 * This filter removes a string of NULL bytes from the end of a packet. 41 */ 42const FFBitStreamFilter ff_chomp_bsf = { 43 .p.name = "chomp", 44 .filter = chomp_filter, 45}; 46