BA: Handle back to back volume level setting.
When BA receiver has been associated and started streaming,
then pair and connect bt-a2dp device and start streaming by
disabling the BA, then again enable BA. At this time due to
MM updating the volume to MUTE and unmute, volume has been
updated twice as '0' and then actual DUT volume value. So,
now in BA statemachine we have done handling of first updated
volume '0' and processed in btif streaming_audio_ns_handler
and sent to BTA layer to update remote by VSC command. To
process all this volume related stuff, BA SM would move to
pending_audio_ns_handler and process and send VSC command
to remote, when the status has been success for the same VSC,
then BA SM move to streaming_audio_ns_handler. But in mean
time when BA SM moved to pending_audio_ns_handler, then unmute
volume has been recieved and got ignored. Which is the reason
BA SM not processed the next actual volume updated by MM,
leading to this mute issue.
To handle this, cache the latest volume and when BA SM moved
to pending, then momorize the next volume event and process it
again when BA SM moved to stable state. So that latest volume
VSC has been sent to remote.
CRs-Fixed: 2546729
Change-Id: Ia3033be26fd7717a817f113c8872c07e0e24f75d
1 file changed