tree a400152cf19b5dcefc34707e76ef74c4e22e0949
parent 5b19f795cc9f7e77335c224c919468354a40340e
author chiyotsai <chiyotsai@google.com> 1601416096 -0700
committer Chi Yo Tsai <chiyotsai@google.com> 1601485224 +0000

Reduce memory used for MACROBLOCK::mbmi_ext

The mbmi_ext struct in MACROBLOCK was previously an dynamically
allocated array whose size is the number of mi's in a superblock.
However, only the first element of the array was ever used.

This commit change the member struct from a dynamically allocated array
to a simple struct allocated on the stack.

This change reduces the memory consumption by 2.8% on a lowres clip.

Change-Id: I61a33577f0ff6ef63ce883bb9c46fb3efb48a8e8