tree b42682c20d3a539a78ec08fc13f5e709a2bae15e
parent 5d6970f2ae37d288e3f25078d500a5f062b9d317
author Yang Ni <yangni@google.com> 1483678869 -0800
committer I-Jui (Ray) Sung <ijsung@google.com> 1484259826 -0800

Fallback to CPU execution if RSoV compilation fails

Bug: 30964317

With a few additional changes:
* Cleaned up the RSoV script initialization code to get rid of
memory leaks;
* Updated the RSoVAllocation destructor to destroy the buffer but
not the uninitialized image.
* Updated allocation initialization code to correctly calculate
allocation size when rows are not aligned to the default minimum
alignment (16 bytes).
* Added a utility function to check if a script is completely backed
by CPU, and updated the CPU context lookup callback function to
use this utility to correctly return a CPU driver-specific script
for a HAL script.

Test: RSoVTest and RsTest

Change-Id: If85b8f01bde3190a9397aaedce8b9808d09716e6