4 commits

Author	SHA1	Message	Date
Thibault Saunier	806ff70590	compositor: Add support for crossfade blending ... Crossfading is a bit more complex than just having two pads with the right keyframes as the blending is not exactly the same. The difference is in the way we compute the alpha channel, in the case of crossfading, we have to compute an additive operation between the destination and the source (factored by the alpha property of both the input pad alpha property and the crossfading ratio) basically so that the crossfade result of 2 opaque frames is also fully opaque at any time in the crossfading process, avoid bleeding through the layer blending. Some rationnal can be found in https://phabricator.freedesktop.org/T7773. https://bugzilla.gnome.org/show_bug.cgi?id=784827	2017-08-03 12:59:43 -04:00
Sebastian Dröge	2a5aed6966	compositor: Implement rescaling of the input via pad properties ... compositor has now the same interface as glvideomixer.	2014-11-27 21:23:04 +01:00
Sebastian Dröge	debf5340bb	compositor: Remove unused zorder pad property ... It's handled in videoaggregator already.	2014-11-26 12:42:24 +01:00
Mathieu Duponchelle	11fa711c34	compositor: Add a new compositor based on the new GstVideoAggregator base class ... It is a replacement for videomixer with a similare API Co-Authored by: Thibault Saunier <tsaunier@gnome.org> https://bugzilla.gnome.org/show_bug.cgi?id=731919	2014-06-20 19:53:33 +02:00