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mpegvideo: don't pretend the first frame is always a key frame

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Signed-off-by: Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>

Modify the parser initialization so that parsers can
set pict_type themselves.  Use this in the mpegvideo parser
so that initial frames are not unconditionally I frames.
I have had this in my tree for several years.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Wolfram Gloger
2012-03-16 21:17:00 +01:00
committed by Michael Niedermayer
parent 6f9803e5e0
commit f8353d5fda
3 changed files with 12 additions and 5 deletions
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7
libavcodec/mpegvideo_parser.c
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@@ -182,9 +182,16 @@ static int mpegvideo_split(AVCodecContext *avctx,
return 0;
}
static int mpegvideo_parse_init(AVCodecParserContext *s)
{
s->pict_type = AV_PICTURE_TYPE_NONE; // first frame might be partial
return 0;
}
AVCodecParser ff_mpegvideo_parser = {
.codec_ids = { CODEC_ID_MPEG1VIDEO, CODEC_ID_MPEG2VIDEO },
.priv_data_size = sizeof(struct MpvParseContext),
.parser_init = mpegvideo_parse_init,
.parser_parse = mpegvideo_parse,
.parser_close = ff_parse_close,
.split = mpegvideo_split,