mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-23 18:21:04 +00:00
Code Issues 1 Projects Releases Wiki Activity

video/affinetransformationmeta: define the coordinate space used

Browse source 
Based on the expected output from the already existing usage by androidmedia
and the opengl plugins.

https://bugzilla.gnome.org/show_bug.cgi?id=764667
This commit is contained in:
Matthew Waters 2016-05-14 15:43:24 +03:00
parent fb2c75de68
commit 1e3f5e0ecf
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
gst-libs/gst/video/gstvideoaffinetransformationmeta.h
View file

@ -45,6 +45,13 @@ typedef gboolean (*GstVideoAffineTransformationGetMatrix) (GstVideoAffineTransfo
* matrix. The transformation matrix can be composed with * matrix. The transformation matrix can be composed with
* gst_video_affine_transformation_meta_apply_matrix(). * gst_video_affine_transformation_meta_apply_matrix().
* *
* The vertices operated on are all in the range 0 to 1, not in
* Normalized Device Coordinates (-1 to +1). Transforming points in this space
* are assumed to have an origin at (0.5, 0.5, 0.5) in a left-handed coordinate
* system with the x-axis moving horizontally (positive values to the right),
* the y-axis moving vertically (positive values up the screen) and the z-axis
* perpendicular to the screen (positive values into the screen).
*
* Since: 1.8 * Since: 1.8
*/ */