00001 /* 00002 * Chomp bitstream filter 00003 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #include "avcodec.h" 00023 #include "internal.h" 00024 00025 static int chomp_filter(AVBitStreamFilterContext *bsfc, 00026 AVCodecContext *avctx, const char *args, 00027 uint8_t **poutbuf, int *poutbuf_size, 00028 const uint8_t *buf, int buf_size, 00029 int keyframe) 00030 { 00031 while (buf_size > 0 && !buf[buf_size-1]) 00032 buf_size--; 00033 00034 *poutbuf = (uint8_t*) buf; 00035 *poutbuf_size = buf_size; 00036 00037 return 0; 00038 } 00039 00043 AVBitStreamFilter ff_chomp_bsf = { 00044 "chomp", 00045 0, 00046 chomp_filter, 00047 };