tree cffdeb827eb93870aa692b8a9d3a0842ff8405de
parent 0f05031545e43c8fe49a9dda0cfd9dce202d1ef3
author Eric Laurent <elaurent@google.com> 1441826751 -0700
committer Glenn Kasten <gkasten@google.com> 1441906287 -0700

audio flinger: force audio path start from normal mixer

The audio HAL wakes up and configures the audio path when receiving
the first write() in standby state. This causes a certain amount of
process to take place in the mixer threads which is problematic for
fast mixer running at FIFO priority.

We now force a fake write() of 0 bytes from normal mixer to trigger
the audio path configuration before starting the fast mixer.

Bug: 23791972.

Change-Id: I54311b337fda956444846f5d2f53a3263d54e04b