christosts 9a793dab70 DefaultTrackSelector: Constrain audio channel count
The track selector will select multi-channel formats when those can be
spatialized, otherwise the selector will prefer stereo/mono audio
tracks. When the device supports audio spatialization (Android 12L+),
the DefaultTrackSelector will monitor for changes in the platform
Spatializer and trigger a new track selection upon a
Spatializer change event.

Devices with a `television` UI mode are excluded from audio channel
count constraints.

#minor-release

PiperOrigin-RevId: 453957269
(cherry picked from commit 9f3c595e022bc98fd776a16dcad10adc66b37e67)
2022-06-09 18:51:27 +00:00
..