Many applications have multiple objects dealing with audio, and each
needs to request audio resources from resource policy manager. Resource
policy manager handles audio resources per-manager. Each ResourceSet
instance creates new manager, which causes applications having multiple
audio objects to fight for the audio resources internally, even though
the streams are played from the same process id.
To overcome this in QtMultimedia applications, handle all ResourceSet
operations through singleton. This way one client has only one manager
id registered, and resource acquiring and releasing can be limited to
only when no resources are acquired or all resources are freed. To
reduce unnecessary noise from resource policy plugin to the clients,
keep track of client states and only notify clients which themselves
request for resources etc.
Change-Id: Ifa4488a9f6298a3f601399e9d339f7bd819be757
Done-with: Juho Hämäläinen <juho.hamalainen@tieto.com>
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Make resources required for capture optional and disable just the
capture features if they are not available, so the camera viewfinder
can be displayed and images captured without blocking the music
playback and the other way around.
Change-Id: Ic9692195156d994ccd4a911ae41d2242a00d575b
Reviewed-by: John Brooks <john.brooks@dereferenced.net>
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
This contains a new resource policy plugin, replacing the built-in
code that was deleted when the plugin interface was removed in
138242fb2d (which unfortunately did not provide a
plugin).
Change-Id: Iae7ed6edc330c69ca0c72d50bde6c7e12b8cca4e
Reviewed-by: Andy Nichols <andy.nichols@digia.com>
