Where is webrtchttp to build for Raspbarian

General Discussion
1

I’m trying to get whepsrc available for PI. And unfortunately the plugin package isn’t available and has to be built.

Where is the webrtchttp sources to be able to build and a how to build. I spent 2 hours trying to find it and figure it out. Does it require building the entire project ?

2

Hello the webrtchttp is a part of the GStreamer Rust plugins. You can fetch the code from GStreamer / gst-plugins-rs · GitLab

Build instructions here - Building

3

Thanks. It’s still very vague. It documents how to build just one feature in it, so which feature name is it for whepsrc ? “gst-plugin-cdg”. Can it be built against the default debian packages for the rest ?

There is a meson build that isn’t documented. Is it easier to use meson, I see it has a build system for whepsrc.

4

I found a better build setup process as it’s missing all the requirements from that rep.

Updfate: this docker method for creating a cross compile deb which is exactly what I need. Almost worked but failed. have to research now.

docker run  -v .:/src:z --workdir /src ghcr.io/mopidy/gst-plugins-rs-build:1 /bin/bash entrypoint.sh armhf net/webrtchttp
docker: Error response from daemon: create .: volume name is too short, names should be at least two alphanumeric characters.
See 'docker run --help'.
make: *** [Makefile:17: build-armhf] Error 125
1 Like
5

there is another undocumented problem with that rs plugin project to continue further. It can’t find openssl headers.

 cargo:warning=build/expando.c:2:10: fatal error: openssl/opensslconf.h: No such file or directory

more here

It requires this in the dependencies

openssl = { version = "0.10", features = ["vendored"] }

But then it complains about this

The system library `gstreamer-webrtc-1.0` required by crate `gstreamer-webrtc-sys` was not found.

More info bullseye the version is 1.18.

> PKG_CONFIG_PATH=/usr/lib/aarch64-linux-gnu/pkgconfig PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags gstreamer-webrtc-1.0 gstreamer-webrtc-1.0 >= 1.18

I’ve spent hours and failed to get this building. Its installing the correct packages in the Docker file. I think “libssl-dev:arm64” works around the ssl header issue but not webrtc.

 libgstreamer-plugins-base1.0-dev \
    libgstreamer-plugins-bad1.0-dev \
    # RPi 0 and 1 (armv6)
    gcc-arm-linux-gnueabihf \
    libgstreamer-plugins-base1.0-dev:armhf \
    libgstreamer-plugins-bad1.0-dev:armhf \
    # RPi 3, 4 and 5 (64-bit ARM)
    gcc-aarch64-linux-gnu \
    libgstreamer-plugins-base1.0-dev:arm64 \
    libgstreamer-plugins-bad1.0-dev:arm64 \
    #openssl needed for whepsrc
    openssl \
    libssl-dev \
    libssl-dev:arm64 \
    libnice \
    libnice:arm64 \

It seems it cant find either headers I still get these failures. An updated cross compile doc would be good.

 cargo:warning=build/expando.c:2:10: fatal error: openssl/opensslconf.h: No such file or directory