Increase kFastTrackMultiplier from 1 to 2

Change-Id: I158f147295eebcea96e4047d7618069bc48bdd7d
stagefright: add an extra buffer to ANW's BUfferQueue

Add an extra buffer to ensure video player has a free buffer to
dequeue rather than wait for the queued buffer to be displayed.
Enable logs to indicate number of buffers allocated.

NOTE: This is not needed for 30fps content on 60fps panel, But
making this change regardless for all framerates till root-cause
is identified in SF

Change-Id: Id1048d7a104b2a75613dda8b9cf166e59bc4bb04
Revert extra buffer hack.

 * Breaks too many things, and this is an awful hack anyway.

Revert "stagefright: Fix "add an extra buffer to ANW's BUfferQueue""

This reverts commit dbb2bb90acd47a53d84809b1aa150bac6093f752.

Revert "stagefright: add an extra buffer to ANW's BUfferQueue"

This reverts commit 2bce3e06f60a8d60c81261b0438d0cc6f2bbe7d1.

Conflicts:
	media/libstagefright/OMXCodec.cpp

Change-Id: I94ce8908f8f6c270d3421841c2aae2e5750092ea
audio: Modified API for compress voip formats

 - Modified API for supported compress voip formats.

Change-Id: I0165fc48bbe631d3febf2104e8a28708bf85ef23
audio: do not invalidate stream used by voip

During the process of invalidation of voip streams,
actual driver is not closed so when it tries to open again
getoutput fails as only one instance of voip can be created.
so do not invalidate the tracks used by voip driver.
CRs-Fixed: 494093

Change-Id: I42a962991ce1d586d87f4aecba19c0e5dde6b9dd