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[Visualization] why Poweramp doesn't require record audio permission for visualization

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That would only be needed if an app was trying to retrieve the main system audio output, which PA does not. PA is generating the playback itself, so has access to all the data before playing it.



The Visualizer class enables application to retrieve part of the currently playing audio for visualization purpose. It is not an audio recording interface and only returns partial and low quality audio content.


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