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Linshizhi
ffmpeg.wasm-core
Commits
7bcd8129
Commit
7bcd8129
authored
Sep 14, 2011
by
Joakim Plate
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[wtv] Check return value of avio_seek and avoid modifying state if it fails
parent
d9d7174d
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1 changed file
with
9 additions
and
5 deletions
+9
-5
wtvdec.c
libavformat/wtvdec.c
+9
-5
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libavformat/wtvdec.c
View file @
7bcd8129
...
...
@@ -997,19 +997,23 @@ static int read_seek(AVFormatContext *s, int stream_index,
i
=
ff_index_search_timestamp
(
wtv
->
index_entries
,
wtv
->
nb_index_entries
,
ts_relative
,
flags
);
if
(
i
<
0
)
{
if
(
wtv
->
last_valid_pts
==
AV_NOPTS_VALUE
||
ts
<
wtv
->
last_valid_pts
)
avio_seek
(
pb
,
0
,
SEEK_SET
);
else
if
(
st
->
duration
!=
AV_NOPTS_VALUE
&&
ts_relative
>
st
->
duration
&&
wtv
->
nb_index_entries
)
avio_seek
(
pb
,
wtv
->
index_entries
[
wtv
->
nb_index_entries
-
1
].
pos
,
SEEK_SET
);
if
(
wtv
->
last_valid_pts
==
AV_NOPTS_VALUE
||
ts
<
wtv
->
last_valid_pts
)
{
if
(
avio_seek
(
pb
,
0
,
SEEK_SET
)
<
0
)
return
-
1
;
}
else
if
(
st
->
duration
!=
AV_NOPTS_VALUE
&&
ts_relative
>
st
->
duration
&&
wtv
->
nb_index_entries
)
{
if
(
avio_seek
(
pb
,
wtv
->
index_entries
[
wtv
->
nb_index_entries
-
1
].
pos
,
SEEK_SET
)
<
0
)
return
-
1
;
}
if
(
parse_chunks
(
s
,
SEEK_TO_PTS
,
ts
,
0
)
<
0
)
return
AVERROR
(
ERANGE
);
return
0
;
}
if
(
avio_seek
(
pb
,
wtv
->
index_entries
[
i
].
pos
,
SEEK_SET
)
<
0
)
return
-
1
;
wtv
->
pts
=
wtv
->
index_entries
[
i
].
timestamp
;
if
(
wtv
->
epoch
!=
AV_NOPTS_VALUE
)
wtv
->
pts
+=
wtv
->
epoch
;
wtv
->
last_valid_pts
=
wtv
->
pts
;
avio_seek
(
pb
,
wtv
->
index_entries
[
i
].
pos
,
SEEK_SET
);
return
0
;
}
...
...
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