tree 48a5d2e485b9591613c0df86d316f8f7ef2ac794
parent a0b3d1a7ec9b73985e9ad184ba55d318e20e47ff
author bohanli <bohanli@google.com> 1578612071 -0800
committer Bohan Li <bohanli@google.com> 1578935076 +0000

Add supporting functions for tx domain rate estimation.

This patch adds functions to estimate rate to code transform
coefficients based on Laplacian model conditioned on estimated
entropy context.

In the end it uses a look-up table to map from quantization level
to estimated rate for every coefficient.

Change-Id: Ibdfd50b167c540be09628c903ebc89c06a30aab7