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We're currently using Linphone library to make VOIP calls and they have their own solution for audio playback. However, we would like to display a visualizer for the audio that Linphone is outputting from within our own app. Is there a way that we can intercept this data (maybe through sample buffering) in order to draw up audio waves/volume meter in the user interface?

AVAudioPlayer or AVPlayer is out of the question since we do not have access to those objects. Is there a solution in place for AVAudioSession or in CoreAudio?

rmaddy
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Jessica Lee
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1 Answers1

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Only if the audio output app is exporting the audio data using Inter-App-audio or Audiobus. Otherwise the iOS security sandbox will hide that audio output from your app.

hotpaw2
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  • Can you give some specifics? https://stackoverflow.com/questions/49340947/avaudiosession-how-do-i-listen-to-the-devices-output – Michael Mar 18 '18 at 15:04