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WebAPI/AudioChannels: Difference between revisions
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attribute boolean telephonySpeaker; // '''Not in V1''' Makes the "telephony" channel go through the speaker. | attribute boolean telephonySpeaker; // '''Not in V1''' Makes the "telephony" channel go through the speaker. | ||
readonly attribute DOMString[] occupiedChannels; | |||
void setOccupyChannel(DOMString channel, boolean occupy); | |||
} | } | ||
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I'm not sure if we need to have prompts if non-privileged apps try to use channels beyond the "normal" or "content" channels. | I'm not sure if we need to have prompts if non-privileged apps try to use channels beyond the "normal" or "content" channels. | ||
== Use cases and requirements == | |||
The set of use cases and requirements that we have tried to solve with the above APIs are: | |||
Ability for the system app to do the following for the currently running apps, as well as for the browser to do for the currently running tabs: | |||
* Show which applications/tabs are currently playing audio | |||
* Show UI which mutes a specific app/tag | |||
* Enable a spotify-app/tab to be treated as a music app. I.e. it should be able to get the same benefits as if it had mozaudiochannel=content. Including both the automatic muting of other content audio, as well the ability to play in the background. | |||
* Control which application/tab gets to play audio if there are several background applications that all are attempting to use the "content" channel, but no visible app using the "content" channel. | |||
Ability for the system app to: | |||
* Turn down the volume of background audio rather than completely silence it when the notification channel is used | |||
* Figure out which volume to modify when the user is pressing the volume buttons. | |||
Ability for apps to: | |||
* Act as if it's occupying a channel without actually using a media element playing on that channel. This is useful for example to prepare for audio which is about to start playing, or to prepare for turning on the camera. | |||