This change will try to detect the optimal buffer size and sample-rate
on Android (requires API level 17+). If the device supports low-latency
playback, then it's recommended that application developers check the
preferred sample-rate through QAudioDeviceInfo::preferredFormat().
On most devices the preferred sample rate seems to be 48 KHz, so this
is now the default instead of 44.1 KHz.
Note that not all devices supports "proper" low-latency playback, and
there are no APIs to retrieve information about how many devices that
can be active at the same time; The only remotely quantitative value
I've found is "a few"...
Change-Id: I0708738b4a31f6bf9e88e9a816679cb688e023f3
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
3bd9da9aba