I want to horizontally invert frames coming to Surface object made from TextureView. What I can do is to set transformation matrix to this TextureView instance, whereas I postScale by -1 for x and 1 for y (leave unchanged), and than postTranslate dx on the full width of the view and leave dy unchanged (0F).
But the problem appears when I rotate my device by 90 degrees (horizontally) with screen rotation off: the image is rotated by 180 degrees, and it, of course, makes perfect sense, because x and y axises did not change.
How it can be solved? Is it possible to play with the translation matrix in such a way to resolve this problem? Or may be with OpenGL ES tools?
P.S.: strangely, but rotation is done two times two times more comparing to the device rotation itself, e.g. when I rotate the device by 90 degrees - preview is rotated by 180.
P.S.S.: I tried to invert the preview using Matrix's setPolyToPoly method... and have got exactly the same result.
P.S.S.S.: Also, played with open gl to achieve the goal using simple scale and rotation transformations for the model and projection matricies, and have got exact the same result!
from Android Camera2 frame horizontal inversion
No comments:
Post a Comment