I'm not entirely sure if this is a bug in libcamera-ipa itself, or pipewire,
but, about 50% of the time, when I try to use my camera, I capture a frame or
two, and then pipewire is killed with SIGFPE.
I captured a coredump, which shows the following backtrace:
#0 0x00007f852c66ef98 in libcamera::ipa::soft::algorithms::Agc::process(libcamera::ipa::soft::IPAContext&, unsigned int, libcamera::ipa::soft::IPAFrameContext&, libcamera::SwIspStats const*, libcamera::ControlList&) () from /usr/lib/x86_64-linux-gnu/libcamera/ipa_soft_simple.so
#1 0x00007f852c66bb4f in libcamera::ipa::soft::IPASoftSimple::processStats(unsigned int, unsigned int, libcamera::ControlList const&) () from /usr/lib/x86_64-linux-gnu/libcamera/ipa_soft_simple.so
#2 0x00007f852e48ebd4 in libcamera::Object::message(libcamera::Message*) () from /lib/x86_64-linux-gnu/libcamera-base.so.0.4
#3 0x00007f852e49cbfc in libcamera::Thread::dispatchMessages(libcamera::Message::Type) () from /lib/x86_64-linux-gnu/libcamera-base.so.0.4
#4 0x00007f852e492f96 in libcamera::EventDispatcherPoll::processEvents() () from /lib/x86_64-linux-gnu/libcamera-base.so.0.4
#5 0x00007f852e49c809 in libcamera::Thread::exec() () from /lib/x86_64-linux-gnu/libcamera-base.so.0.4
#6 0x00007f852e2f8224 in ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6
#7 0x00007f8530783b7b in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448
#8 0x00007f85308015f0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100
I tried upgrading to the version of libcamera in trixie-backports (0.5.2), but
the camera doesn't seem to work *at all* if I do that.
My camera is (I believe) an OV01A10.