hosts/skycam: working stream with go2rtc

pkgs/libcamera-rpi/libcamera-rpi-ipa-priv-key.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

pkgs/libcamera-rpi/package.nix

@@ -0,0 +1,66 @@
+{
+  lib,
+  fetchFromGitHub,
+  libcamera,
+  boost,
+  nlohmann_json,
+  python3Packages,
+  git,
+  cacert,
+  meson,
+}:
+libcamera.overrideAttrs (old: {
+  buildInputs = old.buildInputs ++ [
+    boost
+    nlohmann_json
+  ];
+  nativeBuildInputs = old.nativeBuildInputs ++ [ python3Packages.pybind11 ];
+
+  BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
+  BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
+
+  patches = [
+    ./patches/libcamera-installed.patch
+    ./patches/libcamera-no-timeout.patch
+  ];
+
+  postPatch =
+    old.postPatch
+    + ''
+      patchShebangs src/py/libcamera
+    '';
+
+  preBuild = ''
+    ninja src/ipa-priv-key.pem
+    install -D ${./libcamera-rpi-ipa-priv-key.pem} src/ipa-priv-key.pem
+  '';
+
+  mesonFlags = old.mesonFlags ++ [
+    "--buildtype=release"
+    "-Dcam=disabled"
+    "-Dgstreamer=disabled"
+    "-Dipas=rpi/vc4,rpi/pisp"
+    "-Dpipelines=rpi/vc4,rpi/pisp"
+    "-Dtest=false"
+  ];
+
+  src = fetchFromGitHub {
+    owner = "raspberrypi";
+    repo = "libcamera";
+    rev = "d83ff0a4ae4503bc56b7ed48cd142c3dd423ad3b";
+    sha256 = "sha256-VP0s1jOON9J3gn81aiemsChvGeqx0PPivQF5rmSga6M=";
+
+    nativeBuildInputs = [ git ];
+
+    postFetch = ''
+      cd "$out"
+
+      export NIX_SSL_CERT_FILE=${cacert}/etc/ssl/certs/ca-bundle.crt
+
+      ${lib.getExe meson} subprojects download \
+        libpisp
+
+      find subprojects -type d -name .git -prune -execdir rm -r {} +
+    '';
+  };
+})

pkgs/libcamera-rpi/patches/libcamera-installed.patch

@@ -0,0 +1,53 @@
+From e65bbb6e263d99212cd29a32d89e4c45d0c05353 Mon Sep 17 00:00:00 2001
+From: Jordan Holt <jordan@vimium.com>
+Date: Sat, 21 Jun 2025 18:38:38 +0100
+Subject: [PATCH] libcamera installed
+
+---
+ src/libcamera/source_paths.cpp | 9 ---------
+ src/py/libcamera/meson.build   | 4 ++--
+ 2 files changed, 2 insertions(+), 11 deletions(-)
+
+diff --git a/src/libcamera/source_paths.cpp b/src/libcamera/source_paths.cpp
+index 1af5386a..3fc7d044 100644
+--- a/src/libcamera/source_paths.cpp
++++ b/src/libcamera/source_paths.cpp
+@@ -39,15 +39,6 @@ namespace {
+  */
+ bool isLibcameraInstalled()
+ {
+-	/*
+-	 * DT_RUNPATH (DT_RPATH when the linker uses old dtags) is removed on
+-	 * install.
+-	 */
+-	for (const ElfW(Dyn) *dyn = _DYNAMIC; dyn->d_tag != DT_NULL; ++dyn) {
+-		if (dyn->d_tag == DT_RUNPATH || dyn->d_tag == DT_RPATH)
+-			return false;
+-	}
+-
+ 	return true;
+ }
+
+diff --git a/src/py/libcamera/meson.build b/src/py/libcamera/meson.build
+index 596a203c..c0b1db59 100644
+--- a/src/py/libcamera/meson.build
++++ b/src/py/libcamera/meson.build
+@@ -34,14 +34,14 @@ gen_py_controls = files('gen-py-controls.py')
+ pycamera_sources += custom_target('py_gen_controls',
+                                   input : controls_files,
+                                   output : ['py_controls_generated.cpp'],
+-                                  command : [gen_py_controls, '--mode', 'controls', '-o', '@OUTPUT@',
++                                  command : ['python3', gen_py_controls, '--mode', 'controls', '-o', '@OUTPUT@',
+                                              '-t', gen_py_controls_template, '@INPUT@'],
+                                   env : py_build_env)
+
+ pycamera_sources += custom_target('py_gen_properties',
+                                   input : properties_files,
+                                   output : ['py_properties_generated.cpp'],
+-                                  command : [gen_py_controls, '--mode', 'properties', '-o', '@OUTPUT@',
++                                  command : ['python3', gen_py_controls, '--mode', 'properties', '-o', '@OUTPUT@',
+                                              '-t', gen_py_controls_template, '@INPUT@'],
+                                   env : py_build_env)
+
+--
+2.49.0

pkgs/libcamera-rpi/patches/libcamera-no-timeout.patch

@@ -0,0 +1,29 @@
+From 98918c4efdcf03701908bb756f252ba11b59490b Mon Sep 17 00:00:00 2001
+From: Jordan Holt <jordan@vimium.com>
+Date: Sat, 21 Jun 2025 18:41:54 +0100
+Subject: [PATCH] libcamera no timeout
+
+---
+ src/libcamera/ipc_pipe_unixsocket.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/libcamera/ipc_pipe_unixsocket.cpp b/src/libcamera/ipc_pipe_unixsocket.cpp
+index 668ec73b..faf7e2a5 100644
+--- a/src/libcamera/ipc_pipe_unixsocket.cpp
++++ b/src/libcamera/ipc_pipe_unixsocket.cpp
+@@ -130,11 +130,13 @@ int IPCPipeUnixSocket::call(const IPCUnixSocket::Payload &message,
+ 	/* \todo Make this less dangerous, see IPCPipe::sendSync() */
+ 	timeout.start(2000ms);
+ 	while (!iter->second.done) {
++	#if 0
+ 		if (!timeout.isRunning()) {
+ 			LOG(IPCPipe, Error) << "Call timeout!";
+ 			callData_.erase(iter);
+ 			return -ETIMEDOUT;
+ 		}
++	#endif
+
+ 		Thread::current()->eventDispatcher()->processEvents();
+ 	}
+--
+2.49.0

pkgs/rpicam-apps/package.nix

@@ -0,0 +1,68 @@
+{
+  stdenv,
+  callPackage,
+  fetchFromGitHub,
+  makeWrapper,
+  meson,
+  ninja,
+  pkg-config,
+  boost,
+  ffmpeg-headless,
+  libdrm,
+  libepoxy,
+  libexif,
+  libjpeg,
+  libpng,
+  libtiff,
+  libX11,
+}:
+let
+  libcamera-rpi = callPackage (import ../libcamera-rpi/package.nix) { };
+in
+stdenv.mkDerivation (finalAttrs: {
+  pname = "rpicam-apps";
+  version = "1.7.0";
+
+  src = fetchFromGitHub {
+    owner = "raspberrypi";
+    repo = "rpicam-apps";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-79qpAfY83YOZdM5ZPyIOkg3s7x75hvjG6Cc96UAIdb0=";
+  };
+
+  buildInputs = [
+    boost
+    ffmpeg-headless
+    libcamera-rpi
+    libdrm
+    libepoxy # GLES/EGL preview window
+    libexif
+    libjpeg
+    libpng
+    libtiff
+    libX11
+  ];
+
+  nativeBuildInputs = [
+    makeWrapper
+    meson
+    ninja
+    pkg-config
+  ];
+
+  # See all options here: https://github.com/raspberrypi/rpicam-apps/blob/main/meson_options.txt
+  mesonFlags = [
+    "-Denable_drm=disabled"
+    "-Denable_egl=disabled"
+    "-Denable_hailo=disabled"
+    "-Denable_qt=disabled"
+    "-Denable_libav=disabled"
+  ];
+
+  postInstall = ''
+    for f in rpicam-hello rpicam-jpeg rpicam-raw rpicam-still rpicam-vid
+    do
+      wrapProgram $out/bin/$f --set-default LIBCAMERA_IPA_PROXY_PATH ${libcamera-rpi}/libexec/libcamera
+    done
+  '';
+})