Audio HALs from Project Celadon

[Huy Minh Bui]

I just saw this repo on Proect Celadon's github

https://github.com/projectceladon/device-androidia-sound

This one is new for me, especially the HDMI. I noticed that compare to the one Android-x86 is using, there are some noticable changes like 

- DEFAULT_DEVICE is set to 3 instead of 0, there's also a seprate one for Elkhart Lake CPUs which set to 7 is you set property ro.vendor.hdmi.audio=ehl

- There's also a switch between Multichannel and Two-channel (vendor.audio.hdmi_multichannel set to 6 or 2) maybe this is just for showing information.

Hope this is helpful.

[Huy Minh Bùi (HMTheBoy154)]

I decided to straight up switching to Celadon's HAL and see if it's work good and so far everything is fine. I tested the primary HAL and USB HAL (using my FiiO BTR3K, both in USB & Bluetooth) and they are working pretty good. I can't be able to test HDMI audio yet but I'll show how can I be able to use it here.

This is currently for s-x86, I'll figure out other version later.

On device/generic/common, here's what I added : https://github.com/supremegamers/device_generic_common/commit/d50149e0790335bddcaed084c1420e8fd1880cb2

Here's  hardware/libaudio, I put all the xml files here : https://github.com/supremegamers/platform_hardware_libaudio/commit/74003156b29d81aea198995f28b42afebba1e8f1

and finally, the HAL itself. I just simply rename it to *.x86 instead of setting TARGET_BOARD_PLATFORM like Celadon did : https://github.com/supremegamers/hardware_intel_audio

Vào lúc 01:52:10 UTC+7 ngày Chủ Nhật, 15 tháng 8, 2021, Huy Minh Bùi đã viết: