Multi-channel support for platform audio effects

VIM4
1

Which system do you use? Android, Ubuntu, OOWOW or others?

Android

Which version of system do you use? Please provide the version of the system here:

Android 11

Please describe your issue below:

How do I enable multi-channel audio support for the android effects pipeline on Khadas vim4’s Android 11 image? I am compile the image from source and integrated a multi-channel audio effect at the frameworks/av/media/libeffects level. The multi-channel effect is currently receiving a 2-channel config even when I playback an MP4 that has 5.1 aac audio.

Is this possible at all?

Thanks.

Post a console log of your issue below:


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2

@cedrictio ，
Can you provide us with the testing operation method or an APK for us to test?
You can also test it on Android 14.

3

Hi,

Thanks for the prompt reply. I am integrating the audio effect at the platform level (frameworks/av/media/libeffects). I don’t need an apk to test it. I just use the built in player to playback an MP4 with 5.1aac audio and it will be routed through the effects pipeline. What I am seeing now is that the attached audio effect is receiving 2 channels of pcm audio instead of the 5.1 pcm audio decided from aac.

Is there a way for my audio effect to receive the 5.1 pcm audio?

Thanks.