Hi All, I have posted a question on stack overflow (https://stackoverflow.com/questions/49038140/audiobufferlist-for-auhal-unit-whose-output-stream-format-is-compressed <https://stackoverflow.com/questions/49038140/audiobufferlist-for-auhal-unit-whose-output-stream-format-is-compressed>) but since CoreAudio isn’t that popular I thought it would be worth it to ask it here as well.
To make it short (even if it’s not that easy in this case), I’d like to record audio from an input device using au AUHAL, encode it into AAC format and write to a file (.caf at the moment). So the input scope of the AUHAL reads data in LPCM and output scope should render AAC (everything in bus 1). However, I have an error when rendering (AudioUnitRender returns -50). I really don’t know what I’m doing wrong. My audio stream is in stereo so I allocate two AudioBuffer but it doesn’t seem to work. Anyway, everything is explained in more detail in the stack overflow question. Would be great if you could have a look at it and answer me either here or on the post to give a better visibility. Thanks ! Best, Pierre
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