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Linshizhi
ffmpeg.wasm-core
Commits
56b98dfc
Commit
56b98dfc
authored
Nov 16, 2014
by
Clément Bœsch
Committed by
Clément Bœsch
Nov 26, 2014
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avfilter/signalstats: integrate height loop into subfilters
parent
c7e8f610
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Side-by-side
Showing
1 changed file
with
23 additions
and
17 deletions
+23
-17
vf_signalstats.c
libavfilter/vf_signalstats.c
+23
-17
No files found.
libavfilter/vf_signalstats.c
View file @
56b98dfc
...
...
@@ -134,9 +134,11 @@ static void burn_frame(SignalstatsContext *s, AVFrame *f, int x, int y)
f
->
data
[
2
][
chromay
*
f
->
linesize
[
2
]
+
chromax
]
=
s
->
yuv_color
[
2
];
}
static
int
filter_brng
(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
y
,
int
w
,
int
h
)
static
int
filter_brng
(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
w
,
int
h
)
{
int
x
,
score
=
0
;
int
x
,
y
,
score
=
0
;
for
(
y
=
0
;
y
<
h
;
y
++
)
{
const
int
yc
=
y
>>
s
->
vsub
;
const
uint8_t
*
pluma
=
&
in
->
data
[
0
][
y
*
in
->
linesize
[
0
]];
const
uint8_t
*
pchromau
=
&
in
->
data
[
1
][
yc
*
in
->
linesize
[
1
]];
...
...
@@ -154,6 +156,7 @@ static int filter_brng(SignalstatsContext *s, const AVFrame *in, AVFrame *out, i
if
(
out
&&
filt
)
burn_frame
(
s
,
out
,
x
,
y
);
}
}
return
score
;
}
...
...
@@ -162,14 +165,16 @@ static int filter_tout_outlier(uint8_t x, uint8_t y, uint8_t z)
return
((
abs
(
x
-
y
)
+
abs
(
z
-
y
))
/
2
)
-
abs
(
z
-
x
)
>
4
;
// make 4 configurable?
}
static
int
filter_tout
(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
y
,
int
w
,
int
h
)
static
int
filter_tout
(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
w
,
int
h
)
{
const
uint8_t
*
p
=
in
->
data
[
0
];
int
lw
=
in
->
linesize
[
0
];
int
x
,
score
=
0
,
filt
;
int
x
,
y
,
score
=
0
,
filt
;
for
(
y
=
0
;
y
<
h
;
y
++
)
{
if
(
y
-
1
<
0
||
y
+
1
>=
h
)
return
0
;
continue
;
// detect two pixels above and below (to eliminate interlace artefacts)
// should check that video format is infact interlaced.
...
...
@@ -196,35 +201,38 @@ filter_tout_outlier(p[(y-j) * lw + x + i], \
burn_frame
(
s
,
out
,
x
,
y
);
}
}
}
return
score
;
}
#define VREP_START 4
static
int
filter_vrep
(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
y
,
int
w
,
int
h
)
static
int
filter_vrep
(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
w
,
int
h
)
{
const
uint8_t
*
p
=
in
->
data
[
0
];
const
int
lw
=
in
->
linesize
[
0
];
int
x
,
score
,
totdiff
=
0
;
int
x
,
y
,
score
=
0
;
for
(
y
=
VREP_START
;
y
<
h
;
y
++
)
{
const
int
y2lw
=
(
y
-
VREP_START
)
*
lw
;
const
int
ylw
=
y
*
lw
;
if
(
y
<
VREP_START
)
return
0
;
int
filt
,
totdiff
=
0
;
for
(
x
=
0
;
x
<
w
;
x
++
)
totdiff
+=
abs
(
p
[
y2lw
+
x
]
-
p
[
ylw
+
x
]);
filt
=
totdiff
<
w
;
score
=
(
totdiff
<
w
)
*
w
;
if
(
score
&&
out
)
score
+=
filt
;
if
(
filt
&&
out
)
for
(
x
=
0
;
x
<
w
;
x
++
)
burn_frame
(
s
,
out
,
x
,
y
);
return
score
;
}
return
score
*
w
;
}
static
const
struct
{
const
char
*
name
;
int
(
*
process
)(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
y
,
int
w
,
int
h
);
int
(
*
process
)(
SignalstatsContext
*
s
,
const
AVFrame
*
in
,
AVFrame
*
out
,
int
w
,
int
h
);
}
filters_def
[]
=
{
{
"TOUT"
,
filter_tout
},
{
"VREP"
,
filter_vrep
},
...
...
@@ -309,12 +317,10 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
cpw
+=
prev
->
linesize
[
1
];
}
for
(
j
=
0
;
j
<
link
->
h
;
j
++
)
{
for
(
fil
=
0
;
fil
<
FILT_NUMB
;
fil
++
)
{
if
(
s
->
filters
&
1
<<
fil
)
{
AVFrame
*
dbg
=
out
!=
in
&&
s
->
outfilter
==
fil
?
out
:
NULL
;
filtot
[
fil
]
+=
filters_def
[
fil
].
process
(
s
,
in
,
dbg
,
j
,
link
->
w
,
link
->
h
);
}
filtot
[
fil
]
=
filters_def
[
fil
].
process
(
s
,
in
,
dbg
,
link
->
w
,
link
->
h
);
}
}
...
...
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