SemiMt: Force incoming samples to "semi-mt" kernel format.

The SemiMtCorrectingFilterInterpreter processes fingers in the Kernel's
"Semi-MT" provides a bounding box format:

  slot[0] = (min_x, max_y)
  slot[1] = (max_x, min_y)

By forcing this format on incoming 2-finger data, the existing
SemiMtCorrectingFilterInterpreter can work with kernel drivers that provide
data in either semi-mt or (two-finger) MT-B format.

This is in preparation of a future change to the Cr48 touchpad kernel driver,
which may start to provide the original fingers as reported by the firmware,
and not a bounding box.

BUG=chromium-os:32257
TEST=unittest;

Change-Id: Iecf5df911cff7b50dc7f7bd72d01336484a7b413
Reviewed-on: https://gerrit.chromium.org/gerrit/26408
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Commit-Ready: Chung-yih Wang <cywang@chromium.org>
Reviewed-by: Chung-yih Wang <cywang@chromium.org>
Tested-by: Chung-yih Wang <cywang@chromium.org>

0 files changed, 0 insertions, 0 deletions