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10 commits

Author SHA1 Message Date
Sebastian Dröge
10446bd371 cairooverlay: Add overlay as meta to the buffers if we can 
This requires that downstream supports it and
draw-on-transparent-surface is enabled.

https://bugzilla.gnome.org/show_bug.cgi?id=797091
 2018-10-03 23:20:10 +03:00
Sebastian Dröge
f1c5a22a7a cairooverlay: Pre-multiply and un-premultiply alpha in case of ARGB32 
Cairo expects pre-multiplied alpha, we work on un-premultiplied alpha.

https://bugzilla.gnome.org/show_bug.cgi?id=797091
 2018-10-03 23:20:10 +03:00
Sebastian Dröge
9844bdbf7a cairooverlay: Add property for drawing on a transparent surface and then blending 
This allows us to use the GstVideoOverlayComposition API and correctly
handle pre-multiplied alpha, while also only doing the alpha conversion
once instead of twice for the whole frame.

At a later point we can attach the meta to the buffer instead of
blending ourselves if downstream supports that.

https://bugzilla.gnome.org/show_bug.cgi?id=797091
 2018-10-03 23:20:10 +03:00
Vineeth TM
1071309870 good: use new gst_element_class_add_static_pad_template() 
https://bugzilla.gnome.org/show_bug.cgi?id=763076
 2016-03-24 14:32:20 +02:00
Julien Isorce
90b01fce61 cairooverlay: add support for RGB16 
https://bugzilla.gnome.org/show_bug.cgi?id=723289
 2014-01-31 14:17:54 +00:00
Tim-Philipp Müller
08702be68f cairo: port cairooverlay to 0.11 
The other elements are not that interesting now that we're
using pangocairo in the pango plugin, and should probably
just be removed.
 2013-01-01 11:52:09 +00:00
Tim-Philipp Müller
230cf41cc9 Fix FSF address 
https://bugzilla.gnome.org/show_bug.cgi?id=687520
 2012-11-04 00:07:18 +00:00
Tim-Philipp Müller
e09ae5736d Use new gst_element_class_set_static_metadata() 2012-04-10 00:51:41 +01:00
Sebastian Dröge
fdbdbfefd2 cairooverlay: Some minor cleanup 2011-03-02 23:14:36 +01:00
Jon Nordby
32dff9df75 cairooverlay: Add generic Cairo overlay video element. 
Allows applications to connect to the "draw" signal of
the element and do their custom drawing there.
Includes an example application demonstrating usage.

Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=595520
 2011-03-02 22:55:52 +01:00