Commit 914d53a1 authored by Rupert Swarbrick's avatar Rupert Swarbrick

Tidy up and generalise av1_predict_intra_block

This tidies up the code somewhat, factoring the snapshot/restore of
rows and columns in the reference frame into a separate function. The
variable names might also be a little easier to follow.

The generalisation is that av1_predict_intra_block no longer requires
that a rectangular block is exactly 2:1 or 1:2. The new code will also
allow tiling a rectangular transform size (say two 1:2 transforms to
make a 1:4 transform).

Change-Id: Ie03cb01cce4645b49d943533c57a495dddc6e55d
parent f9023881
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