Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Contribute to GitLab
Sign in / Register
Toggle navigation
F
ffmpeg.wasm-core
Project
Project
Details
Activity
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Issues
0
Issues
0
List
Board
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Charts
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Linshizhi
ffmpeg.wasm-core
Commits
42a8ac94
Commit
42a8ac94
authored
Dec 31, 2011
by
Stefano Sabatini
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
vf_tinterlace: implement interlace mode 5
Allow creating interlaced bottom field first video.
parent
8dc973e6
Show whitespace changes
Inline
Side-by-side
Showing
3 changed files
with
18 additions
and
11 deletions
+18
-11
filters.texi
doc/filters.texi
+4
-0
avfilter.h
libavfilter/avfilter.h
+1
-1
vf_tinterlace.c
libavfilter/vf_tinterlace.c
+13
-10
No files found.
doc/filters.texi
View file @
42a8ac94
...
...
@@ -2525,6 +2525,10 @@ generating a frame with double height at the same input framerate.
@item 4
Interleave the upper field from odd frames with the lower field from
even frames, generating a frame with unchanged height at half framerate.
@item 5
Interleave the lower field from odd frames with the upper field from
even frames, generating a frame with unchanged height at half framerate.
@end table
Default mode is 0.
...
...
libavfilter/avfilter.h
View file @
42a8ac94
...
...
@@ -31,7 +31,7 @@
#define LIBAVFILTER_VERSION_MAJOR 2
#define LIBAVFILTER_VERSION_MINOR 57
#define LIBAVFILTER_VERSION_MICRO 10
0
#define LIBAVFILTER_VERSION_MICRO 10
1
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
...
...
libavfilter/vf_tinterlace.c
View file @
42a8ac94
...
...
@@ -68,9 +68,9 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
if
(
args
)
{
n
=
sscanf
(
args
,
"%d"
,
&
tinterlace
->
mode
);
if
(
n
!=
1
||
tinterlace
->
mode
<
0
||
tinterlace
->
mode
>
4
)
{
if
(
n
!=
1
||
tinterlace
->
mode
<
0
||
tinterlace
->
mode
>
5
)
{
av_log
(
ctx
,
AV_LOG_ERROR
,
"Invalid mode '%s', use an integer between 0 and
4
\n
"
,
args
);
"Invalid mode '%s', use an integer between 0 and
5
\n
"
,
args
);
return
AVERROR
(
EINVAL
);
}
}
...
...
@@ -179,7 +179,7 @@ static void end_frame(AVFilterLink *inlink)
AVFilterBufferRef
*
cur
=
tinterlace
->
cur
;
AVFilterBufferRef
*
next
=
tinterlace
->
next
;
AVFilterBufferRef
*
out
=
NULL
;
int
field
;
int
field
,
tff
;
/* we need at least two frames */
if
(
!
tinterlace
->
cur
)
...
...
@@ -234,23 +234,26 @@ static void end_frame(AVFilterLink *inlink)
FIELD_UPPER_AND_LOWER
,
1
,
!
field
);
break
;
case
4
:
/* interleave upper lines from odd frames with low
er lines from even frames,
/* interleave upper/lower lines from odd frames with lower/upp
er lines from even frames,
* halving the frame rate and preserving image height */
case
4
:
/* top field first */
case
5
:
/* bottom field first */
tff
=
tinterlace
->
mode
==
4
;
out
=
avfilter_get_video_buffer
(
outlink
,
AV_PERM_WRITE
,
outlink
->
w
,
outlink
->
h
);
avfilter_copy_buffer_ref_props
(
out
,
cur
);
out
->
video
->
interlaced
=
1
;
out
->
video
->
top_field_first
=
1
;
out
->
video
->
top_field_first
=
tff
;
/* copy upper field from cur */
/* copy upper
/lower
field from cur */
copy_picture_field
(
out
->
data
,
out
->
linesize
,
cur
->
data
,
cur
->
linesize
,
inlink
->
format
,
inlink
->
w
,
inlink
->
h
,
FIELD_UPPER
,
1
,
FIELD_UPP
ER
);
/* copy lower
fields
from next */
tff
?
FIELD_UPPER
:
FIELD_LOWER
,
1
,
tff
?
FIELD_UPPER
:
FIELD_LOW
ER
);
/* copy lower
/upper field
from next */
copy_picture_field
(
out
->
data
,
out
->
linesize
,
next
->
data
,
next
->
linesize
,
inlink
->
format
,
inlink
->
w
,
inlink
->
h
,
FIELD_LOWER
,
1
,
FIELD_LOW
ER
);
tff
?
FIELD_LOWER
:
FIELD_UPPER
,
1
,
tff
?
FIELD_LOWER
:
FIELD_UPP
ER
);
avfilter_unref_buffer
(
tinterlace
->
next
);
tinterlace
->
next
=
NULL
;
break
;
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment