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From "Shazron Abdullah (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-906) Hardware mute button doesn't effect Media API playback
Date Fri, 15 Jun 2012 20:12:42 GMT

    [ https://issues.apache.org/jira/browse/CB-906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13295892#comment-13295892
] 

Shazron Abdullah commented on CB-906:
-------------------------------------

re: http://developer.apple.com/library/ios/#documentation/Audio/Conceptual/AudioSessionProgrammingGuide/Configuration/Configuration.html

Cordova sets the Audio session category to:
 * *AVAudioSessionCategoryPlayback* or the equivalent kAudioSessionCategory_MediaPlayback—Use
this category for an application whose audio playback is of primary importance. Your audio
plays even with the screen locked and with the Ring/Silent switch set to silent.

That's why it still plays when the mute button is toggled on. To respect the mute button,
we have to use either of the "ambient" categories:

 * *AVAudioSessionCategoryAmbient* or the equivalent kAudioSessionCategory_AmbientSound—Use
this category for an application that plays sounds that add polish or interest but are not
essential to the application’s use. Using this category, your audio is silenced by the Ring/Silent
switch and when the screen locks.
This category allows audio from the iPod, Safari, and other built-in applications to play
while your application is playing audio. You could, for example, use this category for an
application that provides a virtual musical instrument that a user plays along to iPod audio.
 * *AVAudioSessionCategorySoloAmbient* or the equivalent kAudioSessionCategory_SoloAmbientSound—Use
this category for an application whose audio you want silenced when the user switches the
Ring/Silent switch to the “silent” position and when the screen locks. This is the default
category. It differs from the AVAudioSessionCategoryAmbient category only in that it silences
other audio.

So, just by changing the audio session category we can't get what we want, that is:
1. play when screen is locked
2. honor the mute button

These two things are mutually exclusive. My proposal is to not break existing implementations,
and add something like the override parameter to "play" as suggested. Details forthcoming...

                
> Hardware mute button doesn't effect Media API playback
> ------------------------------------------------------
>
>                 Key: CB-906
>                 URL: https://issues.apache.org/jira/browse/CB-906
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: iOS
>    Affects Versions: 1.8.0
>         Environment: iPad 2/iOS 5.1.1
> iPhone 4/iOS 5.1.1
>            Reporter: Nathan Demick
>            Assignee: Shazron Abdullah
>             Fix For: 1.9.0
>
>
> When using the Media API, audio is played even if hardware mute button is switched on.
There is no way to override this setting.
> Expected behavior: Media API respects hardware mute button; optionally an "override"
argument could be passed to the play() method which ignores the mute button.

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