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videolan
vlc
Commits
6f7b2c43
Commit
6f7b2c43
authored
Aug 13, 2014
by
Rémi Denis-Courmont
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param_eq: single precision math
parent
0896977b
Changes
1
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1 changed file
with
19 additions
and
19 deletions
+19
-19
modules/audio_filter/param_eq.c
modules/audio_filter/param_eq.c
+19
-19
No files found.
modules/audio_filter/param_eq.c
View file @
6f7b2c43
...
...
@@ -200,15 +200,15 @@ static void CalcPeakEQCoeffs( float f0, float Q, float gainDB, float Fs,
if
(
gainDB
<
-
40
)
gainDB
=
-
40
;
if
(
gainDB
>
40
)
gainDB
=
40
;
A
=
pow
(
10
,
gainDB
/
40
);
w0
=
2
*
3
.
141593
f
*
f0
/
Fs
;
alpha
=
sin
(
w0
)
/
(
2
*
Q
);
A
=
pow
f
(
10
,
gainDB
/
40
);
w0
=
2
*
((
float
)
M_PI
)
*
f0
/
Fs
;
alpha
=
sin
f
(
w0
)
/
(
2
*
Q
);
b0
=
1
+
alpha
*
A
;
b1
=
-
2
*
cos
(
w0
);
b1
=
-
2
*
cos
f
(
w0
);
b2
=
1
-
alpha
*
A
;
a0
=
1
+
alpha
/
A
;
a1
=
-
2
*
cos
(
w0
);
a1
=
-
2
*
cos
f
(
w0
);
a2
=
1
-
alpha
/
A
;
// Store values to coeffs and normalize by 1/a0
...
...
@@ -244,27 +244,27 @@ static void CalcShelfEQCoeffs( float f0, float slope, float gainDB, int high,
if
(
gainDB
<
-
40
)
gainDB
=
-
40
;
if
(
gainDB
>
40
)
gainDB
=
40
;
A
=
pow
(
10
,
gainDB
/
40
);
A
=
pow
f
(
10
,
gainDB
/
40
);
w0
=
2
*
3
.
141593
f
*
f0
/
Fs
;
alpha
=
sin
(
w0
)
/
2
*
sqrt
(
(
A
+
1
/
A
)
*
(
1
/
slope
-
1
)
+
2
);
alpha
=
sin
f
(
w0
)
/
2
*
sqrtf
(
(
A
+
1
/
A
)
*
(
1
/
slope
-
1
)
+
2
);
if
(
high
)
{
b0
=
A
*
(
(
A
+
1
)
+
(
A
-
1
)
*
cos
(
w0
)
+
2
*
sqrt
(
A
)
*
alpha
);
b1
=
-
2
*
A
*
(
(
A
-
1
)
+
(
A
+
1
)
*
cos
(
w0
)
);
b2
=
A
*
(
(
A
+
1
)
+
(
A
-
1
)
*
cos
(
w0
)
-
2
*
sqrt
(
A
)
*
alpha
);
a0
=
(
A
+
1
)
-
(
A
-
1
)
*
cos
(
w0
)
+
2
*
sqrt
(
A
)
*
alpha
;
a1
=
2
*
(
(
A
-
1
)
-
(
A
+
1
)
*
cos
(
w0
)
);
a2
=
(
A
+
1
)
-
(
A
-
1
)
*
cos
(
w0
)
-
2
*
sqrt
(
A
)
*
alpha
;
b0
=
A
*
(
(
A
+
1
)
+
(
A
-
1
)
*
cos
f
(
w0
)
+
2
*
sqrtf
(
A
)
*
alpha
);
b1
=
-
2
*
A
*
(
(
A
-
1
)
+
(
A
+
1
)
*
cos
f
(
w0
)
);
b2
=
A
*
(
(
A
+
1
)
+
(
A
-
1
)
*
cos
f
(
w0
)
-
2
*
sqrtf
(
A
)
*
alpha
);
a0
=
(
A
+
1
)
-
(
A
-
1
)
*
cos
f
(
w0
)
+
2
*
sqrtf
(
A
)
*
alpha
;
a1
=
2
*
(
(
A
-
1
)
-
(
A
+
1
)
*
cos
f
(
w0
)
);
a2
=
(
A
+
1
)
-
(
A
-
1
)
*
cos
f
(
w0
)
-
2
*
sqrtf
(
A
)
*
alpha
;
}
else
{
b0
=
A
*
(
(
A
+
1
)
-
(
A
-
1
)
*
cos
(
w0
)
+
2
*
sqrt
(
A
)
*
alpha
);
b1
=
2
*
A
*
(
(
A
-
1
)
-
(
A
+
1
)
*
cos
(
w0
));
b2
=
A
*
(
(
A
+
1
)
-
(
A
-
1
)
*
cos
(
w0
)
-
2
*
sqrt
(
A
)
*
alpha
);
a0
=
(
A
+
1
)
+
(
A
-
1
)
*
cos
(
w0
)
+
2
*
sqrt
(
A
)
*
alpha
;
a1
=
-
2
*
(
(
A
-
1
)
+
(
A
+
1
)
*
cos
(
w0
));
a2
=
(
A
+
1
)
+
(
A
-
1
)
*
cos
(
w0
)
-
2
*
sqrt
(
A
)
*
alpha
;
b0
=
A
*
(
(
A
+
1
)
-
(
A
-
1
)
*
cos
f
(
w0
)
+
2
*
sqrtf
(
A
)
*
alpha
);
b1
=
2
*
A
*
(
(
A
-
1
)
-
(
A
+
1
)
*
cos
f
(
w0
));
b2
=
A
*
(
(
A
+
1
)
-
(
A
-
1
)
*
cos
f
(
w0
)
-
2
*
sqrtf
(
A
)
*
alpha
);
a0
=
(
A
+
1
)
+
(
A
-
1
)
*
cos
f
(
w0
)
+
2
*
sqrtf
(
A
)
*
alpha
;
a1
=
-
2
*
(
(
A
-
1
)
+
(
A
+
1
)
*
cos
f
(
w0
));
a2
=
(
A
+
1
)
+
(
A
-
1
)
*
cos
f
(
w0
)
-
2
*
sqrtf
(
A
)
*
alpha
;
}
// Store values to coeffs and normalize by 1/a0
coeffs
[
0
]
=
b0
/
a0
;
...
...
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