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13-Nov-2012 |
Chih-Chung Chang <chihchung@chromium.org> |
CRAS: DSP - Add expression parsing and evaluation functions and unit tests.
The expression facility will be used to determine whether a plugin needs
to be enabled. For example, if we have this line in the ini file for
the DRC plugin:
disable=(or disable_drc (equal? output_device "HDMI"))
then the plugin will be disabled when this expression is evaluated to
true (that is, when the variable "disable_drc" is true or the variable
"output_device" equals to "HDMI".
The expression syntax generally follows the syntax in the Scheme
programming language, but we only use a (very small) subset of it.
BUG=chromium-os:36300
TEST=make check
Change-Id: If57f4f0ba2863ef5ed2d7592d3563a6dd5bee05d
Reviewed-on: https://gerrit.chromium.org/gerrit/38379
Commit-Ready: Chih-Chung Chang <chihchung@chromium.org>
Reviewed-by: Chih-Chung Chang <chihchung@chromium.org>
Tested-by: Chih-Chung Chang <chihchung@chromium.org>
/external/adhd/cras/src/server/cras_expr.c
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