commit 4ffaaa987b051a5c626510063bf359382a68753c
author Nathan E. Egge <negge@mozilla.com> Sun Mar 06 13:41:53 2016 -0500
committer Nathan E. Egge <negge@mozilla.com> Tue Jun 21 13:11:32 2016 -0400
tree dee411da889d709d196b3a9b2b78f8775cbd212a
parent 2c78e5cc064049b5fb0b2e2f944741e1343ccbb7

Use Daala entropy coder to code trees.

When building with --enable-daala_ec, calls to aom_write_tree() and
 aom_read_tree() will convert a aom_tree_index structure with associated
 aom_prob probabilities into a CDF on the fly for use with the
 od_ec_encode_cdf_q15().
The number of symbols in the CDF is capped at 16, and trees that contain
 more than 16 leaf nodes are handled by splitting the most likely, e.g.,
 highest probability symbols, first and coding multiple symbols if
 necessary.

ntt-short-1:

         MEDIUM (%) HIGH (%)
    PSNR 0.000227   0.000213
 PSNRHVS 0.000215   0.000205
    SSIM 0.000229   0.000209
FASTSSIM 0.000229   0.000214

subset1:

          RATE (%)  DSNR (dB)
    PSNR -0.00026   0.00002
 PSNRHVS -0.00026   0.00002
    SSIM -0.00026   0.00001
FASTSSIM -0.00026   0.00001

Change-Id: Icb1a8cb854fd81fdd88fbe4bc6761c7eb4757dfe