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lavf/matroskadec: Ensure cues_end is initialized 

Ensure that cues_start and cues_end are always initialized and
the webm_dash_manifest_cues function returns appropriate error if
they are not computed correctly.

This fixes coverity defect CID1231991.

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Vignesh Venkatasubramanian 2014-08-25 09:15:13 -07:00 committed by Michael Niedermayer
parent bb29896793
commit 080acf7771
1 changed files with 2 additions and 1 deletions
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3
libavformat/matroskadec.c
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@ -3321,7 +3321,7 @@ static int webm_dash_manifest_cues(AVFormatContext *s)
EbmlList *seekhead_list = &matroska->seekhead;
MatroskaSeekhead *seekhead = seekhead_list->elem;
char *buf;
int64_t cues_start, cues_end, before_pos, bandwidth;
int64_t cues_start = -1, cues_end = -1, before_pos, bandwidth;
int i;
// determine cues start and end positions
@ -3340,6 +3340,7 @@ static int webm_dash_manifest_cues(AVFormatContext *s)
cues_end = cues_start + cues_length + 11; // 11 is the offset of Cues ID.
}
avio_seek(matroska->ctx->pb, before_pos, SEEK_SET);
if (cues_start == -1 || cues_end == -1) return -1;
// parse the cues
matroska_parse_cues(matroska);