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Linshizhi
ffmpeg.wasm-core
Commits
4bad76b6
Commit
4bad76b6
authored
May 04, 2018
by
Paul B Mahol
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avfilter/vf_amplify: add more options for finer filtering
Signed-off-by:
Paul B Mahol
<
onemda@gmail.com
>
parent
1d642ebf
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2 changed files
with
35 additions
and
8 deletions
+35
-8
filters.texi
doc/filters.texi
+8
-0
vf_amplify.c
libavfilter/vf_amplify.c
+27
-8
No files found.
doc/filters.texi
View file @
4bad76b6
...
@@ -5207,6 +5207,14 @@ Set threshold for difference amplification. Any differrence greater or equal to
...
@@ -5207,6 +5207,14 @@ Set threshold for difference amplification. Any differrence greater or equal to
this value will not alter source pixel. Default is 10.
this value will not alter source pixel. Default is 10.
Allowed range is from 0 to 65535.
Allowed range is from 0 to 65535.
@item low
Set lower limit for changing source pixel. Default is 65535. Allowed range is from 0 to 65535.
This option controls maximum possible value that will decrease source pixel value.
@item high
Set high limit for changing source pixel. Default is 65535. Allowed range is from 0 to 65535.
This option controls maximum possible value that will increase source pixel value.
@item planes
@item planes
Set which planes to filter. Default is all. Allowed range is from 0 to 15.
Set which planes to filter. Default is all. Allowed range is from 0 to 15.
@end table
@end table
...
...
libavfilter/vf_amplify.c
View file @
4bad76b6
...
@@ -36,11 +36,12 @@ typedef struct AmplifyContext {
...
@@ -36,11 +36,12 @@ typedef struct AmplifyContext {
float
threshold
;
float
threshold
;
int
planes
;
int
planes
;
int
llimit
;
int
hlimit
;
int
nb_inputs
;
int
nb_inputs
;
int
nb_frames
;
int
nb_frames
;
int
depth
;
int
depth
;
int
max
;
int
nb_planes
;
int
nb_planes
;
int
linesize
[
4
];
int
linesize
[
4
];
int
height
[
4
];
int
height
[
4
];
...
@@ -104,6 +105,9 @@ static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
...
@@ -104,6 +105,9 @@ static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
const
int
nb_inputs
=
s
->
nb_inputs
;
const
int
nb_inputs
=
s
->
nb_inputs
;
const
float
threshold
=
s
->
threshold
;
const
float
threshold
=
s
->
threshold
;
const
float
factor
=
s
->
factor
;
const
float
factor
=
s
->
factor
;
const
int
llimit
=
s
->
llimit
;
const
int
hlimit
=
s
->
hlimit
;
const
int
depth
=
s
->
depth
;
int
i
,
p
,
x
,
y
;
int
i
,
p
,
x
,
y
;
if
(
s
->
depth
<=
8
)
{
if
(
s
->
depth
<=
8
)
{
...
@@ -132,11 +136,18 @@ static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
...
@@ -132,11 +136,18 @@ static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
avg
=
sum
/
(
float
)
nb_inputs
;
avg
=
sum
/
(
float
)
nb_inputs
;
diff
=
src
-
avg
;
diff
=
src
-
avg
;
if
(
fabsf
(
diff
)
<
threshold
)
if
(
fabsf
(
diff
)
<
threshold
)
{
dst
[
x
]
=
av_clip_uint8
(
src
+
diff
*
factor
);
int
amp
;
else
if
(
diff
<
0
)
{
amp
=
-
FFMIN
(
FFABS
(
diff
*
factor
),
llimit
);
}
else
{
amp
=
FFMIN
(
FFABS
(
diff
*
factor
),
hlimit
);
}
dst
[
x
]
=
av_clip_uint8
(
src
+
amp
);
}
else
{
dst
[
x
]
=
src
;
dst
[
x
]
=
src
;
}
}
}
dst
+=
out
->
linesize
[
p
];
dst
+=
out
->
linesize
[
p
];
}
}
...
@@ -168,11 +179,18 @@ static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
...
@@ -168,11 +179,18 @@ static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
avg
=
sum
/
(
float
)
nb_inputs
;
avg
=
sum
/
(
float
)
nb_inputs
;
diff
=
src
-
avg
;
diff
=
src
-
avg
;
if
(
fabsf
(
diff
)
<
threshold
)
if
(
fabsf
(
diff
)
<
threshold
)
{
dst
[
x
]
=
av_clip
(
src
+
(
src
-
avg
)
*
factor
,
0
,
s
->
max
);
int
amp
;
else
if
(
diff
<
0
)
{
amp
=
-
FFMIN
(
FFABS
(
diff
*
factor
),
llimit
);
}
else
{
amp
=
FFMIN
(
FFABS
(
diff
*
factor
),
hlimit
);
}
dst
[
x
]
=
av_clip_uintp2
(
src
+
amp
,
depth
);
}
else
{
dst
[
x
]
=
src
;
dst
[
x
]
=
src
;
}
}
}
dst
+=
out
->
linesize
[
p
]
/
2
;
dst
+=
out
->
linesize
[
p
]
/
2
;
}
}
...
@@ -194,7 +212,6 @@ static int config_output(AVFilterLink *outlink)
...
@@ -194,7 +212,6 @@ static int config_output(AVFilterLink *outlink)
return
AVERROR_BUG
;
return
AVERROR_BUG
;
s
->
nb_planes
=
av_pix_fmt_count_planes
(
outlink
->
format
);
s
->
nb_planes
=
av_pix_fmt_count_planes
(
outlink
->
format
);
s
->
depth
=
s
->
desc
->
comp
[
0
].
depth
;
s
->
depth
=
s
->
desc
->
comp
[
0
].
depth
;
s
->
max
=
(
1
<<
s
->
depth
)
-
1
;
if
((
ret
=
av_image_fill_linesizes
(
s
->
linesize
,
inlink
->
format
,
inlink
->
w
))
<
0
)
if
((
ret
=
av_image_fill_linesizes
(
s
->
linesize
,
inlink
->
format
,
inlink
->
w
))
<
0
)
return
ret
;
return
ret
;
...
@@ -252,6 +269,8 @@ static const AVOption amplify_options[] = {
...
@@ -252,6 +269,8 @@ static const AVOption amplify_options[] = {
{
"radius"
,
"set radius"
,
OFFSET
(
radius
),
AV_OPT_TYPE_INT
,
{.
i64
=
2
},
1
,
63
,
.
flags
=
FLAGS
},
{
"radius"
,
"set radius"
,
OFFSET
(
radius
),
AV_OPT_TYPE_INT
,
{.
i64
=
2
},
1
,
63
,
.
flags
=
FLAGS
},
{
"factor"
,
"set factor"
,
OFFSET
(
factor
),
AV_OPT_TYPE_FLOAT
,
{.
dbl
=
2
},
0
,
UINT16_MAX
,
.
flags
=
FLAGS
},
{
"factor"
,
"set factor"
,
OFFSET
(
factor
),
AV_OPT_TYPE_FLOAT
,
{.
dbl
=
2
},
0
,
UINT16_MAX
,
.
flags
=
FLAGS
},
{
"threshold"
,
"set threshold"
,
OFFSET
(
threshold
),
AV_OPT_TYPE_FLOAT
,
{.
dbl
=
10
},
0
,
UINT16_MAX
,
.
flags
=
FLAGS
},
{
"threshold"
,
"set threshold"
,
OFFSET
(
threshold
),
AV_OPT_TYPE_FLOAT
,
{.
dbl
=
10
},
0
,
UINT16_MAX
,
.
flags
=
FLAGS
},
{
"low"
,
"set low limit for amplification"
,
OFFSET
(
llimit
),
AV_OPT_TYPE_INT
,
{.
i64
=
UINT16_MAX
},
0
,
UINT16_MAX
,
.
flags
=
FLAGS
},
{
"high"
,
"set high limit for amplification"
,
OFFSET
(
hlimit
),
AV_OPT_TYPE_INT
,
{.
i64
=
UINT16_MAX
},
0
,
UINT16_MAX
,
.
flags
=
FLAGS
},
{
"planes"
,
"set what planes to filter"
,
OFFSET
(
planes
),
AV_OPT_TYPE_FLAGS
,
{.
i64
=
7
},
0
,
15
,
FLAGS
},
{
"planes"
,
"set what planes to filter"
,
OFFSET
(
planes
),
AV_OPT_TYPE_FLAGS
,
{.
i64
=
7
},
0
,
15
,
FLAGS
},
{
NULL
},
{
NULL
},
};
};
...
...
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