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submodule
ffmpeg
Commits
a8d98377
Commit
a8d98377
authored
May 19, 2013
by
Stefano Sabatini
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lavfi/geq: prefer symbolic constants
Hopefully enhance readability.
parent
2210003b
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Showing
1 changed file
with
34 additions
and
32 deletions
+34
-32
vf_geq.c
libavfilter/vf_geq.c
+34
-32
No files found.
libavfilter/vf_geq.c
View file @
a8d98377
...
...
@@ -42,24 +42,26 @@ typedef struct {
int
is_rgb
;
}
GEQContext
;
enum
{
Y
=
0
,
U
,
V
,
A
,
G
,
B
,
R
};
#define OFFSET(x) offsetof(GEQContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static
const
AVOption
geq_options
[]
=
{
{
"lum_expr"
,
"set luminance expression"
,
OFFSET
(
expr_str
[
0
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"lum"
,
"set luminance expression"
,
OFFSET
(
expr_str
[
0
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cb_expr"
,
"set chroma blue expression"
,
OFFSET
(
expr_str
[
1
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cb"
,
"set chroma blue expression"
,
OFFSET
(
expr_str
[
1
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cr_expr"
,
"set chroma red expression"
,
OFFSET
(
expr_str
[
2
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cr"
,
"set chroma red expression"
,
OFFSET
(
expr_str
[
2
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"alpha_expr"
,
"set alpha expression"
,
OFFSET
(
expr_str
[
3
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"a"
,
"set alpha expression"
,
OFFSET
(
expr_str
[
3
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"red_expr"
,
"set red expression"
,
OFFSET
(
expr_str
[
6
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"r"
,
"set red expression"
,
OFFSET
(
expr_str
[
6
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"green_expr"
,
"set green expression"
,
OFFSET
(
expr_str
[
4
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"g"
,
"set green expression"
,
OFFSET
(
expr_str
[
4
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"blue_expr"
,
"set blue expression"
,
OFFSET
(
expr_str
[
5
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"b"
,
"set blue expression"
,
OFFSET
(
expr_str
[
5
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"lum_expr"
,
"set luminance expression"
,
OFFSET
(
expr_str
[
Y
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"lum"
,
"set luminance expression"
,
OFFSET
(
expr_str
[
Y
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cb_expr"
,
"set chroma blue expression"
,
OFFSET
(
expr_str
[
U
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cb"
,
"set chroma blue expression"
,
OFFSET
(
expr_str
[
U
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cr_expr"
,
"set chroma red expression"
,
OFFSET
(
expr_str
[
V
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"cr"
,
"set chroma red expression"
,
OFFSET
(
expr_str
[
V
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"alpha_expr"
,
"set alpha expression"
,
OFFSET
(
expr_str
[
A
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"a"
,
"set alpha expression"
,
OFFSET
(
expr_str
[
A
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"red_expr"
,
"set red expression"
,
OFFSET
(
expr_str
[
R
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"r"
,
"set red expression"
,
OFFSET
(
expr_str
[
R
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"green_expr"
,
"set green expression"
,
OFFSET
(
expr_str
[
G
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"g"
,
"set green expression"
,
OFFSET
(
expr_str
[
G
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"blue_expr"
,
"set blue expression"
,
OFFSET
(
expr_str
[
B
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
"b"
,
"set blue expression"
,
OFFSET
(
expr_str
[
B
]),
AV_OPT_TYPE_STRING
,
{.
str
=
NULL
},
CHAR_MIN
,
CHAR_MAX
,
FLAGS
},
{
NULL
},
};
...
...
@@ -103,42 +105,42 @@ static av_cold int geq_init(AVFilterContext *ctx)
GEQContext
*
geq
=
ctx
->
priv
;
int
plane
,
ret
=
0
;
if
(
!
geq
->
expr_str
[
0
]
&&
!
geq
->
expr_str
[
4
]
&&
!
geq
->
expr_str
[
5
]
&&
!
geq
->
expr_str
[
6
])
{
if
(
!
geq
->
expr_str
[
Y
]
&&
!
geq
->
expr_str
[
G
]
&&
!
geq
->
expr_str
[
B
]
&&
!
geq
->
expr_str
[
R
])
{
av_log
(
ctx
,
AV_LOG_ERROR
,
"A luminance or RGB expression is mandatory
\n
"
);
ret
=
AVERROR
(
EINVAL
);
goto
end
;
}
geq
->
is_rgb
=
!
geq
->
expr_str
[
0
];
geq
->
is_rgb
=
!
geq
->
expr_str
[
Y
];
if
((
geq
->
expr_str
[
0
]
||
geq
->
expr_str
[
1
]
||
geq
->
expr_str
[
2
])
&&
(
geq
->
expr_str
[
4
]
||
geq
->
expr_str
[
5
]
||
geq
->
expr_str
[
6
]))
{
if
((
geq
->
expr_str
[
Y
]
||
geq
->
expr_str
[
U
]
||
geq
->
expr_str
[
V
])
&&
(
geq
->
expr_str
[
G
]
||
geq
->
expr_str
[
B
]
||
geq
->
expr_str
[
R
]))
{
av_log
(
ctx
,
AV_LOG_ERROR
,
"Either YCbCr or RGB but not both must be specified
\n
"
);
ret
=
AVERROR
(
EINVAL
);
goto
end
;
}
if
(
!
geq
->
expr_str
[
1
]
&&
!
geq
->
expr_str
[
2
])
{
if
(
!
geq
->
expr_str
[
U
]
&&
!
geq
->
expr_str
[
V
])
{
/* No chroma at all: fallback on luma */
geq
->
expr_str
[
1
]
=
av_strdup
(
geq
->
expr_str
[
0
]);
geq
->
expr_str
[
2
]
=
av_strdup
(
geq
->
expr_str
[
0
]);
geq
->
expr_str
[
U
]
=
av_strdup
(
geq
->
expr_str
[
Y
]);
geq
->
expr_str
[
V
]
=
av_strdup
(
geq
->
expr_str
[
Y
]);
}
else
{
/* One chroma unspecified, fallback on the other */
if
(
!
geq
->
expr_str
[
1
])
geq
->
expr_str
[
1
]
=
av_strdup
(
geq
->
expr_str
[
2
]);
if
(
!
geq
->
expr_str
[
2
])
geq
->
expr_str
[
2
]
=
av_strdup
(
geq
->
expr_str
[
1
]);
if
(
!
geq
->
expr_str
[
U
])
geq
->
expr_str
[
U
]
=
av_strdup
(
geq
->
expr_str
[
V
]);
if
(
!
geq
->
expr_str
[
V
])
geq
->
expr_str
[
V
]
=
av_strdup
(
geq
->
expr_str
[
U
]);
}
if
(
!
geq
->
expr_str
[
3
])
geq
->
expr_str
[
3
]
=
av_strdup
(
"255"
);
if
(
!
geq
->
expr_str
[
4
])
geq
->
expr_str
[
4
]
=
av_strdup
(
"g(X,Y)"
);
if
(
!
geq
->
expr_str
[
5
])
geq
->
expr_str
[
5
]
=
av_strdup
(
"b(X,Y)"
);
if
(
!
geq
->
expr_str
[
6
])
geq
->
expr_str
[
6
]
=
av_strdup
(
"r(X,Y)"
);
if
(
!
geq
->
expr_str
[
A
])
geq
->
expr_str
[
A
]
=
av_strdup
(
"255"
);
if
(
!
geq
->
expr_str
[
G
])
geq
->
expr_str
[
G
]
=
av_strdup
(
"g(X,Y)"
);
if
(
!
geq
->
expr_str
[
B
])
geq
->
expr_str
[
B
]
=
av_strdup
(
"b(X,Y)"
);
if
(
!
geq
->
expr_str
[
R
])
geq
->
expr_str
[
R
]
=
av_strdup
(
"r(X,Y)"
);
if
(
geq
->
is_rgb
?
(
!
geq
->
expr_str
[
4
]
||
!
geq
->
expr_str
[
5
]
||
!
geq
->
expr_str
[
6
])
(
!
geq
->
expr_str
[
G
]
||
!
geq
->
expr_str
[
B
]
||
!
geq
->
expr_str
[
R
])
:
(
!
geq
->
expr_str
[
1
]
||
!
geq
->
expr_str
[
2
]
||
!
geq
->
expr_str
[
3
]))
{
(
!
geq
->
expr_str
[
U
]
||
!
geq
->
expr_str
[
V
]
||
!
geq
->
expr_str
[
A
]))
{
ret
=
AVERROR
(
ENOMEM
);
goto
end
;
}
...
...
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