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Linshizhi
ffmpeg.wasm-core
Commits
1e763454
Commit
1e763454
authored
Jan 12, 2015
by
Vittorio Giovara
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png: improve signature check
Return proper error code, print an error message and add missing parentheses.
parent
456ffec3
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1 changed file
with
4 additions
and
3 deletions
+4
-3
pngdec.c
libavcodec/pngdec.c
+4
-3
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libavcodec/pngdec.c
View file @
1e763454
...
...
@@ -415,9 +415,10 @@ static int decode_frame(AVCodecContext *avctx,
/* check signature */
if
(
buf_size
<
8
||
memcmp
(
buf
,
ff_pngsig
,
8
)
!=
0
&&
memcmp
(
buf
,
ff_mngsig
,
8
)
!=
0
)
return
-
1
;
(
memcmp
(
buf
,
ff_pngsig
,
8
)
!=
0
&&
memcmp
(
buf
,
ff_mngsig
,
8
)
!=
0
))
{
av_log
(
avctx
,
AV_LOG_ERROR
,
"Invalid PNG signature (%d).
\n
"
,
buf_size
);
return
AVERROR_INVALIDDATA
;
}
bytestream2_init
(
&
s
->
gb
,
buf
+
8
,
buf_size
-
8
);
s
->
y
=
s
->
state
=
0
;
...
...
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