audio: refactor update metadata process
The meta data isn't updated when stream volume was changed on MMAP
playback thread.
- Move readAndClearHasChanged() and
setMetadataHasChanged() from Track to TrackBase and changes of meta
data is able to be noticed for all types of track.
- Added the flow to check every track's status on
ActiveTracks<T>::readAndClearHasChanged().
- Added isStreamInitialized() in ThreadBase to simplify the processed
flow for each thread.
Bug: 187769565
Test: mmap playback/deep-buffer/offload/low-latency
Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I949772cf38c77de4e41d4d699231c1edecf70f76
Merged-In: I949772cf38c77de4e41d4d699231c1edecf70f76
4 files changed