tree 59799a1c5146b88df0577638e894d463cd7c496a
parent 02516e50a8a2e7fc80c5c67551b4cdf7ecb5d5ad
author chiyotsai <chiyotsai@google.com> 1571441484 -0700
committer Chi Yo Tsai <chiyotsai@google.com> 1571942442 +0000

Make best_mode_index an enum

This commit changes best_mode_index to signed integer to THR_MODES.
In addition, the mode_index for palette mode is corrected to THR_DC,
and best_mode_index is initialized to THR_INVALID.

BUG=aomedia:2513

Change-Id: Ic94aed2763cb1f4fbd3251e1947022ffddc2dc9c