Skip to content
GitLab
Projects
Groups
Snippets
Help
Loading...
Help
What's new
10
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Open sidebar
BC
public
external
ffmpeg
Commits
fe20bdf9
Commit
fe20bdf9
authored
Jul 01, 2010
by
Måns Rullgård
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
Indent
Originally committed as revision 23958 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
588d28ac
Changes
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
8 additions
and
8 deletions
+8
-8
libavcodec/fft.c
libavcodec/fft.c
+8
-8
No files found.
libavcodec/fft.c
View file @
fe20bdf9
...
...
@@ -107,11 +107,11 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse)
if
(
HAVE_ALTIVEC
)
ff_fft_init_altivec
(
s
);
if
(
HAVE_MMX
)
ff_fft_init_mmx
(
s
);
for
(
j
=
4
;
j
<=
nbits
;
j
++
)
{
ff_init_ff_cos_tabs
(
j
);
}
for
(
i
=
0
;
i
<
n
;
i
++
)
s
->
revtab
[
-
split_radix_permutation
(
i
,
n
,
s
->
inverse
)
&
(
n
-
1
)]
=
i
;
for
(
j
=
4
;
j
<=
nbits
;
j
++
)
{
ff_init_ff_cos_tabs
(
j
);
}
for
(
i
=
0
;
i
<
n
;
i
++
)
s
->
revtab
[
-
split_radix_permutation
(
i
,
n
,
s
->
inverse
)
&
(
n
-
1
)]
=
i
;
return
0
;
fail:
...
...
@@ -125,9 +125,9 @@ void ff_fft_permute_c(FFTContext *s, FFTComplex *z)
int
j
,
np
;
const
uint16_t
*
revtab
=
s
->
revtab
;
np
=
1
<<
s
->
nbits
;
/* TODO: handle split-radix permute in a more optimal way, probably in-place */
for
(
j
=
0
;
j
<
np
;
j
++
)
s
->
tmp_buf
[
revtab
[
j
]]
=
z
[
j
];
memcpy
(
z
,
s
->
tmp_buf
,
np
*
sizeof
(
FFTComplex
));
/* TODO: handle split-radix permute in a more optimal way, probably in-place */
for
(
j
=
0
;
j
<
np
;
j
++
)
s
->
tmp_buf
[
revtab
[
j
]]
=
z
[
j
];
memcpy
(
z
,
s
->
tmp_buf
,
np
*
sizeof
(
FFTComplex
));
}
av_cold
void
ff_fft_end
(
FFTContext
*
s
)
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment