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avformat/oggdec: Check for ost allocation failure 

Fixes CID1257798
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-22 18:54:10 +01:00
parent 586ba24ff2
commit 40adcf576f
1 changed files with 12 additions and 2 deletions
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14
libavformat/oggdec.c
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@ -68,6 +68,10 @@ static int ogg_save(AVFormatContext *s)
struct ogg_state *ost =
av_malloc(sizeof(*ost) + (ogg->nstreams - 1) * sizeof(*ogg->streams));
int i;
if (!ost)
return AVERROR(ENOMEM);
ost->pos = avio_tell(s->pb);
ost->curidx = ogg->curidx;
ost->next = ogg->state;
@ -583,6 +587,7 @@ static int ogg_get_length(AVFormatContext *s)
int i;
int64_t size, end;
int streams_left=0;
int ret;
if (!s->pb->seekable)
return 0;
@ -596,7 +601,9 @@ static int ogg_get_length(AVFormatContext *s)
return 0;
end = size > MAX_PAGE_SIZE ? size - MAX_PAGE_SIZE : 0;
ogg_save(s);
ret = ogg_save(s);
if (ret < 0)
return ret;
avio_seek(s->pb, end, SEEK_SET);
ogg->page_pos = -1;
@ -618,7 +625,10 @@ static int ogg_get_length(AVFormatContext *s)
ogg_restore(s, 0);
ogg_save (s);
ret = ogg_save(s);
if (ret < 0)
return ret;
avio_seek (s->pb, s->internal->data_offset, SEEK_SET);
ogg_reset(s);
while (streams_left > 0 && !ogg_packet(s, &i, NULL, NULL, NULL)) {