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Linshizhi
ffmpeg.wasm-core
Commits
7de21960
Commit
7de21960
authored
Oct 27, 2012
by
Michael Niedermayer
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sws: fix extreem downscaling
Signed-off-by:
Michael Niedermayer
<
michaelni@gmx.at
>
parent
95760b33
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utils.c
libswscale/utils.c
+2
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libswscale/utils.c
View file @
7de21960
...
...
@@ -230,7 +230,7 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos,
int
minFilterSize
;
int64_t
*
filter
=
NULL
;
int64_t
*
filter2
=
NULL
;
const
int64_t
fone
=
1LL
<<
54
;
const
int64_t
fone
=
1LL
<<
(
54
-
FFMIN
(
av_log2
(
srcW
/
dstW
),
8
))
;
int
ret
=
-
1
;
emms_c
();
// FIXME should not be required but IS (even for non-MMX versions)
...
...
@@ -356,7 +356,7 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos,
(
-
12
*
B
-
48
*
C
)
*
d
+
(
8
*
B
+
24
*
C
)
*
(
1
<<
30
);
}
coeff
*=
fone
>>
(
30
+
24
)
;
coeff
/=
(
1LL
<<
54
)
/
fone
;
}
#if 0
else if (flags & SWS_X) {
...
...
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