GstVideo.VideoAffineTransformationMeta

Fields

Name	Type	Access	Description
matrix	[float]	r/w	the column-major 4x4 transformation matrix
meta	Gst.Meta	r/w	parent Gst.Meta

Methods

class	get_info ()
	apply_matrix (matrix)

Details

class GstVideo.VideoAffineTransformationMeta

Extra buffer metadata for performing an affine transformation using a 4x4 matrix. The transformation matrix can be composed with GstVideo.VideoAffineTransformationMeta.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).

New in version 1.8.

classmethod get_info()

Return type:

Gst.MetaInfo

apply_matrix(matrix)

Parameters:

matrix ([float]) – a 4x4 transformation matrix to be applied

Apply a transformation using the given 4x4 transformation matrix. Performs the multiplication, meta->matrix X matrix.

New in version 1.8.