audio: play local dts signal,sound from eARC is unsmooth [1/1]

PD#SWPL-199896

Problem:
The IEC data size that decoder output is larger than start threshold,
then the start threshold may does not take effect.

Solution:
Separate the output data into small size.

Verify:
yocto-t5w

Change-Id: I1f8ff24da389736befca5285722009a952086713
Signed-off-by: yayun.shi <yayun.shi@amlogic.com>
(cherry picked from commit 156465e6594d3aac7829a952d3afc27a5b318cf5)
3 files changed