I actually don't know the embedded world at all. My background is WebRTC/userland programming. My answers aren't going to be great, but this is where my learning is at today :)
> What systems are target of the SDK besides embedded linux
I had a few conversations with embedded devs and they said if I wrote this in Pure C (and avoided GCC-isms) it would work well for. Most of the people I have worked with so far are doing embedded Linux, a few are doing non-Linux but I just get bug reports from them. They tell me their C compiler chokes on this etc...
> I looked for some kind of platform abstraction layer
We have a library called PiC[0] that does some of that. I don't think it is as low level as you are thinking though! It has portable atomics, and allows people to provide their own allocators stuff like that.
> not sure whether it would be worthwhile at all to run something like WebRTC on a MCU with a RTOS
Yea I think it would be pretty hard. Getting usrsctp and OpenSSL on those devices seem pretty insane. I have looked at OpenSSL alternatives, but for usrsctp I think we will need to solve it ourselves. I want to explore bringing down the footprint more, but the project is really driven by customer demands and no one has explicitly asked yet.
There are a few widely-used embedded SSL stacks, of which mbed TLS is probably one worth targeting or adding support for (wolfSSL is another.) So long as this requires OpenSSL it's gonna basically be stuck in Linux.
I actually don't know the embedded world at all. My background is WebRTC/userland programming. My answers aren't going to be great, but this is where my learning is at today :)
> What systems are target of the SDK besides embedded linux
I had a few conversations with embedded devs and they said if I wrote this in Pure C (and avoided GCC-isms) it would work well for. Most of the people I have worked with so far are doing embedded Linux, a few are doing non-Linux but I just get bug reports from them. They tell me their C compiler chokes on this etc...
> I looked for some kind of platform abstraction layer
We have a library called PiC[0] that does some of that. I don't think it is as low level as you are thinking though! It has portable atomics, and allows people to provide their own allocators stuff like that.
> not sure whether it would be worthwhile at all to run something like WebRTC on a MCU with a RTOS
Yea I think it would be pretty hard. Getting usrsctp and OpenSSL on those devices seem pretty insane. I have looked at OpenSSL alternatives, but for usrsctp I think we will need to solve it ourselves. I want to explore bringing down the footprint more, but the project is really driven by customer demands and no one has explicitly asked yet.
[0] https://github.com/awslabs/amazon-kinesis-video-streams-prod...