tree 4270bb02dffae3ed72fd15f789e0af6c96097d9b
parent 24a4c7be3fa71ad66b64556aeaf3a72fd64e1ccf
author Haynes Mathew George <hgeorge@codeaurora.org> 1450131727 -0800
committer Gerrit - the friendly Code Review server <code-review@localhost> 1452665153 -0800

policy: Avoid unnecessary set_parameter calls

APM calls a set_parameter on primary output with key fm_volume
whenever a checkAndSetVolume is called. This is done irrespective
of whether the volume values are same of different.

A side effect of doing so is that the FastMixer associated with
the MixerThread will be put into HOT_IDLE unnecessarily which in turn
can cause glitches/breaks in audio.

CRs-Fixed: 948361
Change-Id: I7fd8b7340e6c78ee6d00b41ccf679582338c011a