From 0c587a4ea8256f12735f5234e783be02532696bb Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 26 Jun 2008 11:25:42 +0000 Subject: VP3 & Theora parser to extract keyframe flags. This parser is not able to split random bitstream pieces. Originally committed as revision 13986 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/vp3_parser.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 libavcodec/vp3_parser.c (limited to 'libavcodec/vp3_parser.c') diff --git a/libavcodec/vp3_parser.c b/libavcodec/vp3_parser.c new file mode 100644 index 0000000000..818b460ffc --- /dev/null +++ b/libavcodec/vp3_parser.c @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2008 Michael Niedermayer + * + * 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 "parser.h" + +static int parse(AVCodecParserContext *s, + AVCodecContext *avctx, + const uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size) +{ + if(avctx->codec_id == CODEC_ID_THEORA) + s->pict_type= (buf[0]&0x40) ? FF_P_TYPE : FF_I_TYPE; + else + s->pict_type= (buf[0]&0x80) ? FF_P_TYPE : FF_I_TYPE; + + *poutbuf = buf; + *poutbuf_size = buf_size; + return buf_size; +} + +AVCodecParser vp3_parser = { + { CODEC_ID_THEORA, CODEC_ID_VP3 }, + 0, + NULL, + parse, +}; -- cgit v1.2.3