Commit graph

8 commits

Author SHA1 Message Date
Youness Alaoui
c3d619be67 videomixer2: Adding nv12 and nv21 support
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=683841
2012-09-12 10:46:22 +02:00
Wim Taymans
df260a2ec6 videomixer: port to 0.11
It builds and gst-inspect-0.11 works.. otherwise untested
2012-01-26 18:16:58 +01:00
Wim Taymans
3f1bccbb17 videomixer: port blend function 2012-01-25 18:02:13 +01:00
Lane Brooks
69b5aedc58 videomixer2: Add transparent background option for alpha channel formats
This option allows the videomixer2 element to output a valid alpha
channel when the inputs contain a valid alpha channel. This allows
mixing to occur in multiple stages serially.

The following pipeline shows an example of such a pipeline:

gst-launch videotestsrc background-color=0x000000 pattern=ball ! video/x-raw-yuv,format=\(fourcc\)AYUV ! videomixer2 background=transparent name=mix1 ! videomixer2 name=mix2 ! ffmpegcolorspace ! autovideosink  videotestsrc ! video/x-raw-yuv,format=\(fourcc\)AYUV ! mix2.

The first videotestsrc in this pipeline creates a moving ball on a
transparent background. It is then passed to the first videomixer2.
Previously, this videomixer2 would have forced the alpha channel to
1.0 and given a background of checker, black, or white to the
stream. With this patch, however, you can now specify the background
as transparent, and the alpha channel of the input will be
preserved. This allows for further mixing downstream, as is shown in
the above pipeline where the a second videomixer2 is used to mix in a
background of an smpte videotestsrc. So the result is a ball hovering
over the smpte test source. This could, of course, have been
accomplished with a single mixer element, but staged mixing is useful
when it is not convenient to mix all video at once (e.g. a pipeline
where a foreground and background bin exist and are mixed at the final
output, but the foreground bin needs an internal mixer to create
transitions between clips).

Fixes bug #639994.
2011-04-01 11:35:26 +02:00
Sebastian Dröge
6dd3edd0f7 videomixer: Add support for YUY2, YVYU, UYVY 2010-04-29 19:28:22 +02:00
Sebastian Dröge
bd0b307a74 videomixer: Add support for Y444, Y42B, Y41B and YV12 2010-04-29 19:28:22 +02:00
Sebastian Dröge
fe4ff4f324 videomixer: Add support for ABGR and RGBA
Now all 4 ARGB variants are supported by videomixer.
2010-03-20 17:32:48 +01:00
Sebastian Dröge
2950262186 videomixer: Refactor processing functions
This allows easier plugging of optimized processing functions
in the future, like for SSE or AltiVec.
2010-01-11 18:37:44 +01:00