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avformat/dhav: Check ffio_ensure_seekback()

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Fixes Coverity issue #1492324.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-05-22 06:56:23 +02:00
parent 95faf45af1
commit cf6d07522a
1 changed files with 4 additions and 1 deletions
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5
libavformat/dhav.c
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@ -273,8 +273,11 @@ static int dhav_read_header(AVFormatContext *s)
{
DHAVContext *dhav = s->priv_data;
uint8_t signature[5];
int ret = ffio_ensure_seekback(s->pb, 5);
if (ret < 0)
return ret;
ffio_ensure_seekback(s->pb, 5);
avio_read(s->pb, signature, sizeof(signature));
if (!memcmp(signature, "DAHUA", 5)) {
avio_skip(s->pb, 0x400 - 5);