From c2341b8596fbd3736a1b21cc0be4ac5997e14b8c Mon Sep 17 00:00:00 2001 From: Alex Converse Date: Wed, 19 May 2010 20:18:40 +0000 Subject: Add a chomp BSF to consume zero padding at the end of a packet. Originally committed as revision 23196 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/chomp_bsf.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 libavcodec/chomp_bsf.c (limited to 'libavcodec/chomp_bsf.c') diff --git a/libavcodec/chomp_bsf.c b/libavcodec/chomp_bsf.c new file mode 100644 index 0000000000..caf1ff9ac4 --- /dev/null +++ b/libavcodec/chomp_bsf.c @@ -0,0 +1,47 @@ +/* + * Chomp bitstream filter + * Copyright (c) 2010 Alex Converse + * + * 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 "internal.h" + +static int chomp_filter(AVBitStreamFilterContext *bsfc, + AVCodecContext *avctx, const char *args, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, + int keyframe) +{ + while (buf_size > 0 && !buf[buf_size-1]) + buf_size--; + + *poutbuf = (uint8_t*) buf; + *poutbuf_size = buf_size; + + return 0; +} + +/** + * This filter removes a string of \0 bytes from the end of a packet. + */ +AVBitStreamFilter chomp_bsf = { + "chomp", + 0, + chomp_filter, +}; -- cgit v1.2.3