shithub: libvpx

Download patch

ref: 71b43b0ff0aad2ab222a56e7fc0564ea00892de4
parent: fac7c8c9f97b1d76aa699d8c5e217226bdf1808d
author: Deb Mukherjee <debargha@google.com>
date: Tue Aug 6 11:53:35 EDT 2013

Clean ups of the subpel search functions

Removes some unused code and speed features, and organizes the
interfaces for fractional mv step functions for use in new speed
features to come.

In the process a new speed feature - number of iterations per
step during the subpel search - is exposed.

No change when this parameter is set as the original value of 3.

Results:
subpel_iters_per_step = 3: baseline
subpel_iters_per_step = 2: psnr -0.067%, 1% speedup
subpel_iters_per_step = 1: psnr -0.331%, 3-4% speedup

Change-Id: I2eba8a21f6461be8caf56af04a5337257a5693a8