tree 9d53077f277e94b1839dc6e8ba4fe7ca11c084f4
parent 65cb1dac44500a1b9777a18892299f9c66ff1fdf
author Remya <remya.prakasan@ittiam.com> 1565936844 +0530
committer Yunqing Wang <yunqingwang@google.com> 1565971930 +0000

Modify frame level structure for mbmi_ext_base

Introduced a new structure MB_MODE_INFO_EXT_FRAME at frame level
(for mbmi_ext_base) – which will store refmvs, weight, mode_context
and refmv_count for only the winner reference mode instead of all
possible reference modes (MODE_CTX_REF_FRAMES). This will be used
during the bitstream preparation stage.

Observed memory footprint reduction with similar encoding time.

Resolution    Tile     Memory reduction
                       Single   Multi
                       Thread   Thread
832x480       2x1      ~19%     ~14% (2 threads)
1280x720      2x2      ~30%     ~16% (4 threads)
1920x1080     4x2      ~37%     ~18% (8 threads)

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

Change-Id: Ief3b3832b79acbf93dab8674fa4cac9bd26770b8