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7 Commits

Author SHA1 Message Date
Alex Converse
62a94a649d Switch rANS to 15 bit precision, and adjust L_BASE. 
This causes rANS to operate at the same precision as the Daala EC.

aom/master stats: rans10uabs8lbase12 → rans15uabs8lbase15

objective-1-fast
PSNR YCbCr:      0.01%      0.01%      0.01%
   PSNRHVS:      0.01%
      SSIM:      0.01%
    MSSSIM:      0.01%
 CIEDE2000:      0.01%

subset1
PSNR YCbCr:     -0.01%     -0.00%     -0.00%
   PSNRHVS:     -0.01%
      SSIM:     -0.01%
    MSSSIM:     -0.01%
 CIEDE2000:     -0.01%

(cherry picked from aom/master commit ddbc2e2a68bfc997dc61fca5bcaac3a75245e965)

Change-Id: I6ef0a4f6198784b3712a61af9f105d560a22eaea
 2016-10-14 14:05:50 -07:00
Alex Converse
9ed1a2ff44 Remove custom rans types 
(cherry picked from aom/master commit 11206c60d930be9d29100567aa67f2a65463852a)

Includes renames in a bunch of places not handled by the original
due to differing tree states.

Change-Id: Ic74d9d8850b8c80a51e55e425bbf472a67e2653f
 2016-10-13 05:53:58 +00:00
Alex Converse
d5b9c730ad Remove unused aom_rans_build_cdf_from_pdf 
Change-Id: I544989eae45b7dda04250365c3de99f50110a76b
(cherry picked from aom/master commit 06cce842caa5212826d51c2a317de0bdfae74349)
 2016-10-12 17:44:14 -07:00
Alex Converse
e9f70f8f10 Remove the starting zero from ANS CDFs. 
This brings it in line with the Daala CDFs and will make it easier to
share code.

Change-Id: Idfd2d2b33c3b9b2c4e72ce72fb3d8039013448b9
(cherry picked from aom/master commit af98507ca928afe33e9f88fdd2ca168379528d6a)
 2016-10-12 17:41:01 -07:00
Alex Converse
33590f8c71 Rename rans_dec_lut to rans_lut 
It's used in both encoding and decoding. Matches (historical)
implementation in aom/master.

Change-Id: Ib009b6b6023cfe69e99a0a92f3c70f4416fcdb47
 2016-09-28 15:35:04 -07:00
Alex Converse
7fe2ae8e88 Port ANS from aom/master 25aaf40 
Reconciles the following commits from aom/master to nextgenv2:
- 25aaf40bbc24beeb52de9af7d7624b7d7c6ce9de
- 87073de5693df70eba1c9b9be2b2732ed3b08fb3

Change-Id: Ideda50a6ec75485cb4fa7437c69f4e58d6a2ca73
 2016-09-28 12:07:00 -07:00
Alex Converse
1ac1ae73dc Move ANS to aom_dsp. 
That's where it lives in aom/master.

Change-Id: I38f405827d9c2d0b06ef5f3bfd7cadc35d5991ef
 2016-09-19 09:51:27 -07:00