Currently we check AV_FRAME_DATA_DISPLAYMATRIX for its rotation factor
but not for its flip factor, which could happen with some input files.
This commit adds and autovflip filter, which is applied before the
autorotate filter to flip vertically before rotating. It also changes
the displaymatrix reading code to output to mp_image->params.vflip so
it can be autoinserted as necessary.
Signed-off-by: Leo Izen <[email protected]>
Leo Izen
5870c95e89