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VP3 & Theora parser to extract keyframe flags.

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This parser is not able to split random bitstream pieces.

Originally committed as revision 13986 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-06-26 11:25:42 +00:00
parent fb9464e807
commit 0c587a4ea8
3 changed files with 45 additions and 0 deletions
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1
libavcodec/Makefile
View File

@ -350,6 +350,7 @@ OBJS-$(CONFIG_MPEGAUDIO_PARSER) += mpegaudio_parser.o mpegaudiodecheader.
OBJS-$(CONFIG_MPEGVIDEO_PARSER) += mpegvideo_parser.o mpeg12.o mpeg12data.o mpegvideo.o error_resilience.o
OBJS-$(CONFIG_PNM_PARSER) += pnm_parser.o pnm.o
OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o
OBJS-$(CONFIG_VP3_PARSER) += vp3_parser.o
OBJS-$(CONFIG_DUMP_EXTRADATA_BSF) += dump_extradata_bsf.o
OBJS-$(CONFIG_H264_MP4TOANNEXB_BSF) += h264_mp4toannexb_bsf.o

1
libavcodec/allcodecs.c
View File

@ -310,6 +310,7 @@ void avcodec_register_all(void)
REGISTER_PARSER (MPEGVIDEO, mpegvideo);
REGISTER_PARSER (PNM, pnm);
REGISTER_PARSER (VC1, vc1);
REGISTER_PARSER (VP3, vp3);
/* bitstream filters */
REGISTER_BSF (DUMP_EXTRADATA, dump_extradata);

43
libavcodec/vp3_parser.c Normal file
View File

@ -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,
};