tree b1705e83bab251ab3604a80743dbddf1963ecaa1
parent 13f85600735aa9f7d57fbaf0096d00cb84895cd1
author Yahan Zhou <yahan@google.com> 1458084548 -0700
committer Greg Hartman <ghartman@google.com> 1535070292 -0700

Checksum for GLES messages from host to guest

This patch adds checksum for GLES messages from host to guest. It also
changes ChecksumCalculator a little because of how encoder and decoder
handle data buffers differently.

Currently when using ChecksumCalculator, for both read and write
checksum, one needs to call addBuffer for each data buffer, then call
validate/write. The reason is the encoder usually has data in multiple
buffers for both read and write, so we can't use the previous validate
interface where it only calculates checksum from one single buffer.

The interface for the decoder, ChecksumCalculatorThreadInfo, currently
provides functions to validate/write checksum for one single buffer.
This is because the decoder always has a large buffer to contain all
data for each GL command for both read and write.

Change-Id: I4a32e33f22b969e522c7bee8fd2c25c674ba1b8b