View Full Version : How to use OpenMAX IL to control audio hardware??

06-09-2009, 10:20 AM
It seems OpenMAX IL does not support controlling audio hardware (microphone and speaker).
But it will be great to take the hardware into the scope of OpenMAX IL. That will provide a unified interface to control all parts of audio.

Please just answer me: Which API of OpenMAX IL can be used to do the audio hardware control (audio hardware path selecting, gain setting, filter controlling.....)???

I see this message board is not very active. But I still wish somebody can spend one minute and share some ideas.

Thank you very very very very much.

12-15-2009, 07:20 PM

The audio hardware can be(part of) a sink or source OMX component. The gains are controlled with "OMX_AUDIO_CONFIG_VOLUMETYPE".
Concerning "audio hardware path selecting" (I assume you are talking about routing the audio to different outputs), this can be handled by different source/sink components each handling a specific path.
Eg: OMX.XYZ.Audio.Sink_path1, OMX.XYZ.Audio.Sink_path2 and so on......

Can you please be a more descriptive regarding the filter controlling. What filter you are talking about.