SoundManager: Set up AVAudioSession
on iOS
#12714
Merged
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Based on #12672
On iOS, audio apps should set up an
AVAudioSession
to tailor the OS behavior towards their use case (e.g. whether the app should interrupt other audio etc.) As explained in PortAudio/portaudio#881, this is currently not handled by PortAudio and likely doesn't fit into its API, since different apps will have different requirements that can't be handled by a "one-size-fits-all" initialization.For Mixxx, I've set up the session in a way that it mixes with other apps1 and uses the standard playback mode.
Footnotes
Not strictly necessary, but since we're mixing our own decks anyway, I see no downside in mixing with other apps too? Also, we wouldn't interrupt audio when launching Mixxx that way (an alternative would be to activate the audio session first upon playing a track, but that would likely require the
AVAudioSession
logic to be more deeply intertwined with other playback logic, which might not be desirable in order to keep platform-specific stuff isolated). ↩