[audio] Audio doesn't play on `PLATFORM_DRM` or `PLATFORM_RPI`

[Trithilon]

Please, before submitting a new issue verify and check:

• [ Y ] I tested it on latest raylib version from master branch
• [ Y ] I checked there is no similar issue already reported
• [ Y ] My code has no errors or misuse of raylib

Issue description

Audio examples do not play sound of a Raspberry Pi Zero 2 W.

Environment

Replicated on RPI02W piCore CLI - with and without DRM.

Code Example

Just run "make PLATFORM=PLATFORM_RPI" or "make PLATFORM=PLATFORM_DRM" against Raylib 4.2.0 and its examples on piCore (It works on Debian Buster Lite). Audio won't playback via HDMI. (Playback happens when using Desktop mode)

[TSnake41]

Probably related to pulseaudio/whatever not being active.

[alvinphilips]

Hey, I could try and take a look into this. Could you provide some more context? I see a lot of issues particularly regarding RPis and Audio/Middle Mouse Button here.

[raysan5]

@polarvoid Actually Raspberry Pi requires some more testing, afaik audio/gamepad worked ok in previous version.

[alvinphilips]

If y'all need any help with that, I can take a look. I have a few Pis that I can test on.

[Trithilon]

I just received my new RPi 4 and 3B+ - so happy to test stuff out as well.

[alvinphilips]

One can never have too many of em XD.

[JupiterRider]

I had no issues on Raspberry Pi OS Lite (64-bit, Debian 11 bullseye).

I used raylib 4.2 PLATFORM_DRM and played a .wav file using the audio jack.

Its a Raspberry Pi 3B+

[Trithilon]

@JupiterRider : I was using RPI Zero 2 W, so there was no headphone jack. There was no HDMI sound. I'll check this at my end as well tomorrow now that I just got my RPI 4 and 3B+

[raysan5]

I think this issue is related to OS configuration, raylib is proven to work in similar platforms.