commit 7c1f6d1862b1d8ff4443aca1be8768f1e32d99ba
author Yue Chen <yuec@google.com> Mon Mar 21 11:53:57 2016 -0700
committer Yue Chen <yuec@google.com> Mon Mar 21 16:12:05 2016 -0700
tree 9a4c7fd00717874f7187e27dcee38d6e055d4ace
parent cbfc15b11b297217b039558dd541071c0be8287a

Refactor transform type-size search function

Decompose choose_tx_size_from_rd into three functions that determine
the transform coding rd at different stages. Besides the original
function, txfm_yrd() calculates the rd for fixed size and type.
choose_tx_size_fix_type() fixes the type and searches for the size.
It can enable other experiments to do restricted tx searches so as to
reduce the impact on speed.
Similar refactoring is done for select_tx_type_yrd() in VAR_TX.

Performance change in baseline is trivial:
0.014/0.001/-0.020 for lowres/midres/hdres.

Change-Id: I2ecbf6066329be088ec1bfb69013b657b14b8afe