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submodule
ffmpeg
Commits
2e70b2de
Commit
2e70b2de
authored
Jan 01, 2012
by
Aneesh Dogra
Committed by
Diego Biurrun
Jan 03, 2012
Browse files
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Plain Diff
dct: K&R formatting cosmetics
Signed-off-by:
Diego Biurrun
<
diego@biurrun.de
>
parent
212fd3a1
Hide whitespace changes
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Side-by-side
Showing
1 changed file
with
61 additions
and
61 deletions
+61
-61
dct.c
libavcodec/dct.c
+61
-61
No files found.
libavcodec/dct.c
View file @
2e70b2de
...
@@ -28,15 +28,16 @@
...
@@ -28,15 +28,16 @@
*/
*/
#include <math.h>
#include <math.h>
#include "libavutil/mathematics.h"
#include "libavutil/mathematics.h"
#include "dct.h"
#include "dct.h"
#include "dct32.h"
#include "dct32.h"
/* sin((M_PI * x / (2
*
n)) */
/* sin((M_PI * x / (2
*
n)) */
#define SIN(s,
n,
x) (s->costab[(n) - (x)])
#define SIN(s,
n,
x) (s->costab[(n) - (x)])
/* cos((M_PI * x / (2
*
n)) */
/* cos((M_PI * x / (2
*
n)) */
#define COS(s,
n,
x) (s->costab[x])
#define COS(s,
n,
x) (s->costab[x])
static
void
ff_dst_calc_I_c
(
DCTContext
*
ctx
,
FFTSample
*
data
)
static
void
ff_dst_calc_I_c
(
DCTContext
*
ctx
,
FFTSample
*
data
)
{
{
...
@@ -44,28 +45,28 @@ static void ff_dst_calc_I_c(DCTContext *ctx, FFTSample *data)
...
@@ -44,28 +45,28 @@ static void ff_dst_calc_I_c(DCTContext *ctx, FFTSample *data)
int
i
;
int
i
;
data
[
0
]
=
0
;
data
[
0
]
=
0
;
for
(
i
=
1
;
i
<
n
/
2
;
i
++
)
{
for
(
i
=
1
;
i
<
n
/
2
;
i
++
)
{
float
tmp1
=
data
[
i
];
float
tmp1
=
data
[
i
];
float
tmp2
=
data
[
n
-
i
];
float
tmp2
=
data
[
n
-
i
];
float
s
=
SIN
(
ctx
,
n
,
2
*
i
);
float
s
=
SIN
(
ctx
,
n
,
2
*
i
);
s
*=
tmp1
+
tmp2
;
s
*=
tmp1
+
tmp2
;
tmp1
=
(
tmp1
-
tmp2
)
*
0
.
5
f
;
tmp1
=
(
tmp1
-
tmp2
)
*
0
.
5
f
;
data
[
i
]
=
s
+
tmp1
;
data
[
i
]
=
s
+
tmp1
;
data
[
n
-
i
]
=
s
-
tmp1
;
data
[
n
-
i
]
=
s
-
tmp1
;
}
}
data
[
n
/
2
]
*=
2
;
data
[
n
/
2
]
*=
2
;
ctx
->
rdft
.
rdft_calc
(
&
ctx
->
rdft
,
data
);
ctx
->
rdft
.
rdft_calc
(
&
ctx
->
rdft
,
data
);
data
[
0
]
*=
0
.
5
f
;
data
[
0
]
*=
0
.
5
f
;
for
(
i
=
1
;
i
<
n
-
2
;
i
+=
2
)
{
for
(
i
=
1
;
i
<
n
-
2
;
i
+=
2
)
{
data
[
i
+
1
]
+=
data
[
i
-
1
];
data
[
i
+
1
]
+=
data
[
i
-
1
];
data
[
i
]
=
-
data
[
i
+
2
];
data
[
i
]
=
-
data
[
i
+
2
];
}
}
data
[
n
-
1
]
=
0
;
data
[
n
-
1
]
=
0
;
}
}
static
void
ff_dct_calc_I_c
(
DCTContext
*
ctx
,
FFTSample
*
data
)
static
void
ff_dct_calc_I_c
(
DCTContext
*
ctx
,
FFTSample
*
data
)
...
@@ -74,19 +75,19 @@ static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
...
@@ -74,19 +75,19 @@ static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
int
i
;
int
i
;
float
next
=
-
0
.
5
f
*
(
data
[
0
]
-
data
[
n
]);
float
next
=
-
0
.
5
f
*
(
data
[
0
]
-
data
[
n
]);
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
{
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
{
float
tmp1
=
data
[
i
];
float
tmp1
=
data
[
i
];
float
tmp2
=
data
[
n
-
i
];
float
tmp2
=
data
[
n
-
i
];
float
s
=
SIN
(
ctx
,
n
,
2
*
i
);
float
s
=
SIN
(
ctx
,
n
,
2
*
i
);
float
c
=
COS
(
ctx
,
n
,
2
*
i
);
float
c
=
COS
(
ctx
,
n
,
2
*
i
);
c
*=
tmp1
-
tmp2
;
c
*=
tmp1
-
tmp2
;
s
*=
tmp1
-
tmp2
;
s
*=
tmp1
-
tmp2
;
next
+=
c
;
next
+=
c
;
tmp1
=
(
tmp1
+
tmp2
)
*
0
.
5
f
;
tmp1
=
(
tmp1
+
tmp2
)
*
0
.
5
f
;
data
[
i
]
=
tmp1
-
s
;
data
[
i
]
=
tmp1
-
s
;
data
[
n
-
i
]
=
tmp1
+
s
;
data
[
n
-
i
]
=
tmp1
+
s
;
}
}
...
@@ -94,7 +95,7 @@ static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
...
@@ -94,7 +95,7 @@ static void ff_dct_calc_I_c(DCTContext *ctx, FFTSample *data)
data
[
n
]
=
data
[
1
];
data
[
n
]
=
data
[
1
];
data
[
1
]
=
next
;
data
[
1
]
=
next
;
for
(
i
=
3
;
i
<=
n
;
i
+=
2
)
for
(
i
=
3
;
i
<=
n
;
i
+=
2
)
data
[
i
]
=
data
[
i
-
2
]
-
data
[
i
];
data
[
i
]
=
data
[
i
-
2
]
-
data
[
i
];
}
}
...
@@ -103,16 +104,16 @@ static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
...
@@ -103,16 +104,16 @@ static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
int
n
=
1
<<
ctx
->
nbits
;
int
n
=
1
<<
ctx
->
nbits
;
int
i
;
int
i
;
float
next
=
data
[
n
-
1
];
float
next
=
data
[
n
-
1
];
float
inv_n
=
1
.
0
f
/
n
;
float
inv_n
=
1
.
0
f
/
n
;
for
(
i
=
n
-
2
;
i
>=
2
;
i
-=
2
)
{
for
(
i
=
n
-
2
;
i
>=
2
;
i
-=
2
)
{
float
val1
=
data
[
i
];
float
val1
=
data
[
i
];
float
val2
=
data
[
i
-
1
]
-
data
[
i
+
1
];
float
val2
=
data
[
i
-
1
]
-
data
[
i
+
1
];
float
c
=
COS
(
ctx
,
n
,
i
);
float
c
=
COS
(
ctx
,
n
,
i
);
float
s
=
SIN
(
ctx
,
n
,
i
);
float
s
=
SIN
(
ctx
,
n
,
i
);
data
[
i
]
=
c
*
val1
+
s
*
val2
;
data
[
i
]
=
c
*
val1
+
s
*
val2
;
data
[
i
+
1
]
=
s
*
val1
-
c
*
val2
;
data
[
i
+
1
]
=
s
*
val1
-
c
*
val2
;
}
}
...
@@ -121,13 +122,13 @@ static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
...
@@ -121,13 +122,13 @@ static void ff_dct_calc_III_c(DCTContext *ctx, FFTSample *data)
ctx
->
rdft
.
rdft_calc
(
&
ctx
->
rdft
,
data
);
ctx
->
rdft
.
rdft_calc
(
&
ctx
->
rdft
,
data
);
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
{
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
{
float
tmp1
=
data
[
i
]
*
inv_n
;
float
tmp1
=
data
[
i
]
*
inv_n
;
float
tmp2
=
data
[
n
-
i
-
1
]
*
inv_n
;
float
tmp2
=
data
[
n
-
i
-
1
]
*
inv_n
;
float
csc
=
ctx
->
csc2
[
i
]
*
(
tmp1
-
tmp2
);
float
csc
=
ctx
->
csc2
[
i
]
*
(
tmp1
-
tmp2
);
tmp1
+=
tmp2
;
tmp1
+=
tmp2
;
data
[
i
]
=
tmp1
+
csc
;
data
[
i
]
=
tmp1
+
csc
;
data
[
n
-
i
-
1
]
=
tmp1
-
csc
;
data
[
n
-
i
-
1
]
=
tmp1
-
csc
;
}
}
}
}
...
@@ -137,34 +138,33 @@ static void ff_dct_calc_II_c(DCTContext *ctx, FFTSample *data)
...
@@ -137,34 +138,33 @@ static void ff_dct_calc_II_c(DCTContext *ctx, FFTSample *data)
int
i
;
int
i
;
float
next
;
float
next
;
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
{
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
{
float
tmp1
=
data
[
i
];
float
tmp1
=
data
[
i
];
float
tmp2
=
data
[
n
-
i
-
1
];
float
tmp2
=
data
[
n
-
i
-
1
];
float
s
=
SIN
(
ctx
,
n
,
2
*
i
+
1
);
float
s
=
SIN
(
ctx
,
n
,
2
*
i
+
1
);
s
*=
tmp1
-
tmp2
;
s
*=
tmp1
-
tmp2
;
tmp1
=
(
tmp1
+
tmp2
)
*
0
.
5
f
;
tmp1
=
(
tmp1
+
tmp2
)
*
0
.
5
f
;
data
[
i
]
=
tmp1
+
s
;
data
[
i
]
=
tmp1
+
s
;
data
[
n
-
i
-
1
]
=
tmp1
-
s
;
data
[
n
-
i
-
1
]
=
tmp1
-
s
;
}
}
ctx
->
rdft
.
rdft_calc
(
&
ctx
->
rdft
,
data
);
ctx
->
rdft
.
rdft_calc
(
&
ctx
->
rdft
,
data
);
next
=
data
[
1
]
*
0
.
5
;
next
=
data
[
1
]
*
0
.
5
;
data
[
1
]
*=
-
1
;
data
[
1
]
*=
-
1
;
for
(
i
=
n
-
2
;
i
>=
0
;
i
-=
2
)
{
for
(
i
=
n
-
2
;
i
>=
0
;
i
-=
2
)
{
float
inr
=
data
[
i
];
float
inr
=
data
[
i
];
float
ini
=
data
[
i
+
1
];
float
ini
=
data
[
i
+
1
];
float
c
=
COS
(
ctx
,
n
,
i
);
float
c
=
COS
(
ctx
,
n
,
i
);
float
s
=
SIN
(
ctx
,
n
,
i
);
float
s
=
SIN
(
ctx
,
n
,
i
);
data
[
i
]
=
c
*
inr
+
s
*
ini
;
data
[
i
]
=
c
*
inr
+
s
*
ini
;
data
[
i
+
1
]
=
next
;
data
[
i
+
1
]
=
next
;
next
+=
s
*
inr
-
c
*
ini
;
next
+=
s
*
inr
-
c
*
ini
;
}
}
}
}
...
@@ -180,36 +180,36 @@ av_cold int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType inverse)
...
@@ -180,36 +180,36 @@ av_cold int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType inverse)
memset
(
s
,
0
,
sizeof
(
*
s
));
memset
(
s
,
0
,
sizeof
(
*
s
));
s
->
nbits
=
nbits
;
s
->
nbits
=
nbits
;
s
->
inverse
=
inverse
;
s
->
inverse
=
inverse
;
if
(
inverse
==
DCT_II
&&
nbits
==
5
)
{
if
(
inverse
==
DCT_II
&&
nbits
==
5
)
{
s
->
dct_calc
=
dct32_func
;
s
->
dct_calc
=
dct32_func
;
}
else
{
}
else
{
ff_init_ff_cos_tabs
(
nbits
+
2
);
ff_init_ff_cos_tabs
(
nbits
+
2
);
s
->
costab
=
ff_cos_tabs
[
nbits
+
2
];
s
->
csc2
=
av_malloc
(
n
/
2
*
sizeof
(
FFTSample
));
s
->
costab
=
ff_cos_tabs
[
nbits
+
2
];
s
->
csc2
=
av_malloc
(
n
/
2
*
sizeof
(
FFTSample
));
if
(
ff_rdft_init
(
&
s
->
rdft
,
nbits
,
inverse
==
DCT_III
)
<
0
)
{
if
(
ff_rdft_init
(
&
s
->
rdft
,
nbits
,
inverse
==
DCT_III
)
<
0
)
{
av_free
(
s
->
csc2
);
av_free
(
s
->
csc2
);
return
-
1
;
return
-
1
;
}
}
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
for
(
i
=
0
;
i
<
n
/
2
;
i
++
)
s
->
csc2
[
i
]
=
0
.
5
/
sin
((
M_PI
/
(
2
*
n
)
*
(
2
*
i
+
1
)));
s
->
csc2
[
i
]
=
0
.
5
/
sin
((
M_PI
/
(
2
*
n
)
*
(
2
*
i
+
1
)));
switch
(
inverse
)
{
switch
(
inverse
)
{
case
DCT_I
:
s
->
dct_calc
=
ff_dct_calc_I_c
;
break
;
case
DCT_I
:
s
->
dct_calc
=
ff_dct_calc_I_c
;
break
;
case
DCT_II
:
s
->
dct_calc
=
ff_dct_calc_II_c
;
break
;
case
DCT_II
:
s
->
dct_calc
=
ff_dct_calc_II_c
;
break
;
case
DCT_III
:
s
->
dct_calc
=
ff_dct_calc_III_c
;
break
;
case
DCT_III
:
s
->
dct_calc
=
ff_dct_calc_III_c
;
break
;
case
DST_I
:
s
->
dct_calc
=
ff_dst_calc_I_c
;
break
;
case
DST_I
:
s
->
dct_calc
=
ff_dst_calc_I_c
;
break
;
}
}
}
}
s
->
dct32
=
ff_dct32_float
;
s
->
dct32
=
ff_dct32_float
;
if
(
HAVE_MMX
)
ff_dct_init_mmx
(
s
);
if
(
HAVE_MMX
)
ff_dct_init_mmx
(
s
);
return
0
;
return
0
;
}
}
...
...
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