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Linshizhi
ffmpeg.wasm-core
Commits
658bdc67
Commit
658bdc67
authored
Dec 27, 2017
by
Carl Eugen Hoyos
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lavc/jpeg2000dec: Support reading 64-bit atom size.
Fixes ticket #6935.
parent
ad73b32d
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10 additions
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1 deletion
+10
-1
jpeg2000dec.c
libavcodec/jpeg2000dec.c
+10
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libavcodec/jpeg2000dec.c
View file @
658bdc67
...
...
@@ -2009,7 +2009,16 @@ static int jp2_find_codestream(Jpeg2000DecoderContext *s)
bytestream2_get_bytes_left
(
&
s
->
g
)
>=
8
)
{
atom_size
=
bytestream2_get_be32u
(
&
s
->
g
);
atom
=
bytestream2_get_be32u
(
&
s
->
g
);
atom_end
=
bytestream2_tell
(
&
s
->
g
)
+
atom_size
-
8
;
if
(
atom_size
==
1
)
{
if
(
bytestream2_get_be32u
(
&
s
->
g
))
{
avpriv_request_sample
(
s
->
avctx
,
"Huge atom"
);
return
0
;
}
atom_size
=
bytestream2_get_be32u
(
&
s
->
g
);
atom_end
=
bytestream2_tell
(
&
s
->
g
)
+
atom_size
-
16
;
}
else
{
atom_end
=
bytestream2_tell
(
&
s
->
g
)
+
atom_size
-
8
;
}
if
(
atom
==
JP2_CODESTREAM
)
return
1
;
...
...
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