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Linshizhi
ffmpeg.wasm-core
Commits
0c2466de
Commit
0c2466de
authored
Feb 25, 2013
by
Anton Khirnov
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vf_transpose: switch to an AVOptions-based system.
parent
ffea3b00
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2 changed files
with
44 additions
and
28 deletions
+44
-28
filters.texi
doc/filters.texi
+14
-6
vf_transpose.c
libavfilter/vf_transpose.c
+30
-22
No files found.
doc/filters.texi
View file @
0c2466de
...
@@ -2107,11 +2107,19 @@ will create 5 copies of the input video.
...
@@ -2107,11 +2107,19 @@ will create 5 copies of the input video.
Transpose rows with columns in the input video and optionally flip it.
Transpose rows with columns in the input video and optionally flip it.
It accepts a parameter representing an integer, which can assume the
This filter accepts the following options:
values:
@table @option
@item dir
The direction of the transpose.
@end table
The direction can assume the following values:
@table @samp
@table @samp
@item
0
@item
cclock_flip
Rotate by 90 degrees counterclockwise and vertically flip (default), that is:
Rotate by 90 degrees counterclockwise and vertically flip (default), that is:
@example
@example
L.R L.l
L.R L.l
...
@@ -2119,7 +2127,7 @@ L.R L.l
...
@@ -2119,7 +2127,7 @@ L.R L.l
l.r R.r
l.r R.r
@end example
@end example
@item
1
@item
clock
Rotate by 90 degrees clockwise, that is:
Rotate by 90 degrees clockwise, that is:
@example
@example
L.R l.L
L.R l.L
...
@@ -2127,7 +2135,7 @@ L.R l.L
...
@@ -2127,7 +2135,7 @@ L.R l.L
l.r r.R
l.r r.R
@end example
@end example
@item
2
@item
cclock
Rotate by 90 degrees counterclockwise, that is:
Rotate by 90 degrees counterclockwise, that is:
@example
@example
L.R R.r
L.R R.r
...
@@ -2135,7 +2143,7 @@ L.R R.r
...
@@ -2135,7 +2143,7 @@ L.R R.r
l.r L.l
l.r L.l
@end example
@end example
@item
3
@item
clock_flip
Rotate by 90 degrees clockwise and vertically flip, that is:
Rotate by 90 degrees clockwise and vertically flip, that is:
@example
@example
L.R r.R
L.R r.R
...
...
libavfilter/vf_transpose.c
View file @
0c2466de
...
@@ -31,38 +31,27 @@
...
@@ -31,38 +31,27 @@
#include "libavutil/pixdesc.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "avfilter.h"
#include "formats.h"
#include "formats.h"
#include "internal.h"
#include "internal.h"
#include "video.h"
#include "video.h"
enum
TransposeDir
{
TRANSPOSE_CCLOCK_FLIP
,
TRANSPOSE_CLOCK
,
TRANSPOSE_CCLOCK
,
TRANSPOSE_CLOCK_FLIP
,
};
typedef
struct
{
typedef
struct
{
const
AVClass
*
class
;
int
hsub
,
vsub
;
int
hsub
,
vsub
;
int
pixsteps
[
4
];
int
pixsteps
[
4
];
/* 0 Rotate by 90 degrees counterclockwise and vflip. */
enum
TransposeDir
dir
;
/* 1 Rotate by 90 degrees clockwise. */
/* 2 Rotate by 90 degrees counterclockwise. */
/* 3 Rotate by 90 degrees clockwise and vflip. */
int
dir
;
}
TransContext
;
}
TransContext
;
static
av_cold
int
init
(
AVFilterContext
*
ctx
,
const
char
*
args
)
{
TransContext
*
trans
=
ctx
->
priv
;
trans
->
dir
=
0
;
if
(
args
)
sscanf
(
args
,
"%d"
,
&
trans
->
dir
);
if
(
trans
->
dir
<
0
||
trans
->
dir
>
3
)
{
av_log
(
ctx
,
AV_LOG_ERROR
,
"Invalid value %d not between 0 and 3.
\n
"
,
trans
->
dir
);
return
AVERROR
(
EINVAL
);
}
return
0
;
}
static
int
query_formats
(
AVFilterContext
*
ctx
)
static
int
query_formats
(
AVFilterContext
*
ctx
)
{
{
enum
AVPixelFormat
pix_fmts
[]
=
{
enum
AVPixelFormat
pix_fmts
[]
=
{
...
@@ -198,6 +187,25 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
...
@@ -198,6 +187,25 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
return
ff_filter_frame
(
outlink
,
out
);
return
ff_filter_frame
(
outlink
,
out
);
}
}
#define OFFSET(x) offsetof(TransContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static
const
AVOption
options
[]
=
{
{
"dir"
,
"Transpose direction"
,
OFFSET
(
dir
),
AV_OPT_TYPE_INT
,
{
.
i64
=
TRANSPOSE_CCLOCK_FLIP
},
TRANSPOSE_CCLOCK_FLIP
,
TRANSPOSE_CLOCK_FLIP
,
FLAGS
,
"dir"
},
{
"cclock_flip"
,
"counter-clockwise with vertical flip"
,
0
,
AV_OPT_TYPE_CONST
,
{
.
i64
=
TRANSPOSE_CCLOCK_FLIP
},
.
unit
=
"dir"
},
{
"clock"
,
"clockwise"
,
0
,
AV_OPT_TYPE_CONST
,
{
.
i64
=
TRANSPOSE_CLOCK
},
.
unit
=
"dir"
},
{
"cclock"
,
"counter-clockwise"
,
0
,
AV_OPT_TYPE_CONST
,
{
.
i64
=
TRANSPOSE_CCLOCK
},
.
unit
=
"dir"
},
{
"clock_flip"
,
"clockwise with vertical flip"
,
0
,
AV_OPT_TYPE_CONST
,
{
.
i64
=
TRANSPOSE_CLOCK_FLIP
},
.
unit
=
"dir"
},
{
NULL
},
};
static
const
AVClass
transpose_class
=
{
.
class_name
=
"transpose"
,
.
item_name
=
av_default_item_name
,
.
option
=
options
,
.
version
=
LIBAVUTIL_VERSION_INT
,
};
static
const
AVFilterPad
avfilter_vf_transpose_inputs
[]
=
{
static
const
AVFilterPad
avfilter_vf_transpose_inputs
[]
=
{
{
{
.
name
=
"default"
,
.
name
=
"default"
,
...
@@ -220,8 +228,8 @@ AVFilter avfilter_vf_transpose = {
...
@@ -220,8 +228,8 @@ AVFilter avfilter_vf_transpose = {
.
name
=
"transpose"
,
.
name
=
"transpose"
,
.
description
=
NULL_IF_CONFIG_SMALL
(
"Transpose input video."
),
.
description
=
NULL_IF_CONFIG_SMALL
(
"Transpose input video."
),
.
init
=
init
,
.
priv_size
=
sizeof
(
TransContext
),
.
priv_size
=
sizeof
(
TransContext
),
.
priv_class
=
&
transpose_class
,
.
query_formats
=
query_formats
,
.
query_formats
=
query_formats
,
...
...
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