tree 96795da81afa1fc5ddfd6edea849f41e00ac0be3
parent 736644daf75f44acf61a2450926006829beb8234
author bohanli <bohanli@google.com> 1578689015 -0800
committer Bohan Li <bohanli@google.com> 1579027572 +0000

Add a speed feature to use tx type prune based on estimated RD.

The speed feature is turned on for speed 4 and 5.
On speed 4, speed loss is ~2%, with BD-rate gain of ~0.2% in overall
PSNR.

BD-rate on cpu-used=4 (%):

	avgPSNR	 overPSNR  ssim     VMAF
lowres	-0.202	 -0.212	   -0.190   -0.535
midres  -0.162   -0.181	   -0.161   -0.437
ugc360p -0.249   -0.225	   -0.136   -0.329

Also fixed a few implicit conversions.

STATS_CHANGED

Change-Id: I2964dfb3cabe6f0090418f18cc9a46dd4dd578bf