tree fbbe54896c95eee0f5ccb438b9a1dbff405c3092
parent 6fd3ccf97aa6d0181ea6bbf9d63fa600c525e8db
author Ravi Chaudhary <ravi.chaudhary@ittiam.com> 1547199835 +0530
committer Yunqing Wang <yunqingwang@google.com> 1549472602 +0000

Limit row-mt threads based on tile size for encoder

As per theoretical estimate, in case of encoder row-mt,
Maximum number of threads allowed for a tile should be:
MIN(Num_of_SB_cols/2,Num_of_SB_rows).

In row based multi-threading of encoder, this patch limits
the number of threads assigned to a tile as per theoretical
limits.

Change-Id: I360147a2648460a3e5b8d6acb45a149be429a096