tree 6f1dedbca440c3b0acc161a3a8696df565f87ce6
parent f20376cb0e4054b608c77c6db9d5f7fed5a87fca
author Ravi Chaudhary <ravi.chaudhary@ittiam.com> 1566198686 +0530
committer Yunqing Wang <yunqingwang@google.com> 1566431692 +0000

Modify size of ref_mv_stack and weight in PC_TREE

Size of ref_mv_stack and weight in MB_MODE_INFO_EXT
used in PC_TREE has been modified from [29][8] to
[29][4]. Similarly, in mbmi_ext_frame_base the size
is reduced from [8] to [4]. This is the usable size
of ref_mv_stack and weight for encoding decisions as
well as bitstream preparation, once the mv_refs list
is populated by function call av1_find_mv_refs().

Observed memory footprint reduction with similar
encoding time.

Resolution    Tile     Memory-reduction
                       Single   Multi
                       Thread   Thread
832x480       2x1      ~18%     ~24% (2 threads)
1280x720      2x2      ~14%     ~25% (4 threads)
1920x1080     4x2      ~9%      ~25% (8 threads)

Memory measuring command:
$ command time -v ./aomenc ...

Change-Id: I7a60f2debbc688b3da678f3509a120a5d1d689ad