Commit graph

13 commits

Author SHA1 Message Date
Thibault Saunier
86b106091c videomixer: Send caps event from the streaming thread
This way we avoid races in caps negotiation and we make sure
that the caps are sent after stream-start.

https://bugzilla.gnome.org/show_bug.cgi?id=684237
2013-05-19 09:28:04 -04:00
Mathieu Duponchelle
6b153ce385 videomixer: send stream-start event. 2013-04-25 16:09:34 -03:00
Tim-Philipp Müller
230cf41cc9 Fix FSF address
https://bugzilla.gnome.org/show_bug.cgi?id=687520
2012-11-04 00:07:18 +00:00
Youness Alaoui
13328bc129 videomixer2: Fix race condition where a src setcaps is ignored
If both pads receive data at the same time, they will both get their
sink_setcaps called which will call the src_setcaps, but there is
a race condition where the second one might not be called.
Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=683842
2012-10-19 12:10:31 +02:00
Tim-Philipp Müller
2d249dcc29 videomixer: change sink pad template name from sink_%d to sink_%u 2012-05-01 18:58:03 +01:00
Mark Nauwelaerts
67e168aef4 collectpads2: rename to collectpads 2012-04-17 15:14:27 +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
8331bd7e10 videomixer: some more porting 2012-01-25 18:40:03 +01:00
Sebastian Dröge
4cdacf4ca9 videomixer: Remove videomixer and register videomixer2 as videomixer 2012-01-09 14:53:27 +01:00
Sebastian Dröge
ae07ebedc9 videomixer2: Use collectpads2 from core 2011-10-28 09:36:17 +02:00
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
e79742205c videomixer2: Add documentation and add to the docs 2010-09-04 14:55:43 +02:00
Sebastian Dröge
bcfd60a8d2 videomixer2: Add videomixer2 element
This is based on collectpads2 and is synchronizing
all streams based on the running time.

New features compared to old videomixer:
 * Synchronizing frames on the running time
 * Improved and simplified negotiation
 * Full QoS support
 * Variable framerate support

Fixes bug #626048, #624905.
2010-09-04 14:52:11 +02:00