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Linshizhi
ffmpeg.wasm-core
Commits
4f54a3b8
Commit
4f54a3b8
authored
Mar 17, 2008
by
Måns Rullgård
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indentation
Originally committed as revision 12478 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
844ea46a
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fft.c
libavcodec/fft.c
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libavcodec/fft.c
View file @
4f54a3b8
...
...
@@ -87,33 +87,33 @@ int ff_fft_init(FFTContext *s, int nbits, int inverse)
#endif
/* compute constant table for HAVE_SSE version */
if
(
shuffle
)
{
int
np
,
nblocks
,
np2
,
l
;
FFTComplex
*
q
;
if
(
shuffle
)
{
int
np
,
nblocks
,
np2
,
l
;
FFTComplex
*
q
;
np
=
1
<<
nbits
;
nblocks
=
np
>>
3
;
np2
=
np
>>
1
;
s
->
exptab1
=
av_malloc
(
np
*
2
*
sizeof
(
FFTComplex
));
if
(
!
s
->
exptab1
)
goto
fail
;
q
=
s
->
exptab1
;
do
{
for
(
l
=
0
;
l
<
np2
;
l
+=
2
*
nblocks
)
{
*
q
++
=
s
->
exptab
[
l
];
*
q
++
=
s
->
exptab
[
l
+
nblocks
];
np
=
1
<<
nbits
;
nblocks
=
np
>>
3
;
np2
=
np
>>
1
;
s
->
exptab1
=
av_malloc
(
np
*
2
*
sizeof
(
FFTComplex
));
if
(
!
s
->
exptab1
)
goto
fail
;
q
=
s
->
exptab1
;
do
{
for
(
l
=
0
;
l
<
np2
;
l
+=
2
*
nblocks
)
{
*
q
++
=
s
->
exptab
[
l
];
*
q
++
=
s
->
exptab
[
l
+
nblocks
];
q
->
re
=
-
s
->
exptab
[
l
].
im
;
q
->
im
=
s
->
exptab
[
l
].
re
;
q
++
;
q
->
re
=
-
s
->
exptab
[
l
+
nblocks
].
im
;
q
->
im
=
s
->
exptab
[
l
+
nblocks
].
re
;
q
++
;
}
nblocks
=
nblocks
>>
1
;
}
while
(
nblocks
!=
0
);
av_freep
(
&
s
->
exptab
);
}
q
->
re
=
-
s
->
exptab
[
l
].
im
;
q
->
im
=
s
->
exptab
[
l
].
re
;
q
++
;
q
->
re
=
-
s
->
exptab
[
l
+
nblocks
].
im
;
q
->
im
=
s
->
exptab
[
l
+
nblocks
].
re
;
q
++
;
}
nblocks
=
nblocks
>>
1
;
}
while
(
nblocks
!=
0
);
av_freep
(
&
s
->
exptab
);
}
/* compute bit reverse table */
...
...
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