Nice, this will be a useful component!

This has a bluetooth mode out of the box, I'm having it hooked up to an amp right now: https://github.com/MrBuddyCasino/ESP32_MP3_Decoder

In case there will be nothing but crickets: the Chromium source contains a C++ echo canceller for WebRTC that is supposed to be good. I don't know if its suitable for embedded usage though.

I bet RAM usage would be significantly reduced when using the Rust programming language, combined with a run-to-completion scheduler. Such schedulers lead to significantly better code (no races guaranteed), less overhead and a single stack model (which much reduces RAM usage). Rust also brings bett...

I think the DAC takes unsigned samples, while regular I2S is signed. So you'll need to convert the samples from -32768-32767 to 0-65535. Adding 0x8000 per channel should accomplish that.

I don't know what that is, so I searched for "DMA subframe", yet couldn't find a decent explanation. Do you have a link or something?

That depends on the server you use, of course - nginx, apache, whatever. But OpenSSL only recently added support for that extension, so its possible that yours doesn't support it yet.

I once worked around this issue by using BearSSL (see https://github.com/MrBuddyCasino/ESP32_Alexa/). You get ownership of the buffer, and thus don't have to copy. Its not trivial though, and I can't give any assistance. Another option to safe memory is to not use a threading model, but an event rea...

Props for figuring all this stuff out. Its appreciated.

Nice! Had some trouble flashing BMP to a Blue Pill due to 64k flash limit, this would have saved me some time. Is the port feature complete?