Add uStreamer service to skycam

flake.nix

@@ -70,7 +70,7 @@
       overlays = [
         agenix.overlays.default
         (import ./overlays/gnome.nix)
-        (import ./overlays/default.nix)
+        (import ./overlays/libcamera.nix)
         (
           final: prev: {
             unstable = import inputs.nixpkgs-unstable { system = final.system; };

hosts/skycam/default.nix

@@ -6,7 +6,10 @@
     ../server.nix
   ];
 
-  raspberry-pi-nix.board = "bcm2711";
+  raspberry-pi-nix = {
+    board = "bcm2711";
+    libcamera-overlay.enable = false;
+  };
 
   networking = {
     hostId = "731d1660";
@@ -25,9 +28,31 @@
 
   services.openssh.settings.PermitRootLogin = lib.mkForce "prohibit-password";
 
+  systemd.services.ustreamer = {
+    enable = true;
+    description = "uStreamer service";
+    unitConfig = {
+      Type = "simple";
+      ConditionPathExists = "/sys/bus/i2c/drivers/imx708/10-001a/video4linux";
+    };
+    serviceConfig = {
+      ExecStart = ''${pkgs.libcamera}/bin/libcamerify ${pkgs.unstable.ustreamer}/bin/ustreamer \
+        --host=0.0.0.0 \
+        --resolution=4608x2592
+      '';
+      DynamicUser = "yes";
+      SupplementaryGroups = [ "video" "i2c" ];
+      Restart = "always";
+      RestartSec = 10;
+    };
+    wantedBy = [ "network-online.target" ];
+    confinement.mode = "chroot-only";
+  };
+
   environment.systemPackages = with pkgs; [
     git
     neovim
+    libcamera
     libraspberrypi
     raspberrypi-eeprom
     v4l-utils

overlays/0001-Remove-relative-config-lookups.patch

@@ -0,0 +1,142 @@
+From 57128bb78f56cadf9e2dcca5ba4d710c3bd478a7 Mon Sep 17 00:00:00 2001
+From: Jordan Holt <jordan@vimium.com>
+Date: Mon, 5 Aug 2024 21:53:09 +0100
+Subject: [PATCH] Remove relative config lookups
+
+---
+ src/libcamera/ipa_manager.cpp      | 16 ----------
+ src/libcamera/ipa_proxy.cpp        | 48 ++----------------------------
+ src/libcamera/pipeline_handler.cpp | 21 ++-----------
+ 3 files changed, 4 insertions(+), 81 deletions(-)
+
+diff --git a/src/libcamera/ipa_manager.cpp b/src/libcamera/ipa_manager.cpp
+index f4e0b633..6d5bbd05 100644
+--- a/src/libcamera/ipa_manager.cpp
++++ b/src/libcamera/ipa_manager.cpp
+@@ -131,22 +131,6 @@ IPAManager::IPAManager()
+ 				<< "No IPA found in '" << modulePaths << "'";
+ 	}
+ 
+-	/*
+-	 * When libcamera is used before it is installed, load IPAs from the
+-	 * same build directory as the libcamera library itself.
+-	 */
+-	std::string root = utils::libcameraBuildPath();
+-	if (!root.empty()) {
+-		std::string ipaBuildPath = root + "src/ipa";
+-		constexpr int maxDepth = 2;
+-
+-		LOG(IPAManager, Info)
+-			<< "libcamera is not installed. Adding '"
+-			<< ipaBuildPath << "' to the IPA search path";
+-
+-		ipaCount += addDir(ipaBuildPath.c_str(), maxDepth);
+-	}
+-
+ 	/* Finally try to load IPAs from the installed system path. */
+ 	ipaCount += addDir(IPA_MODULE_DIR);
+ 
+diff --git a/src/libcamera/ipa_proxy.cpp b/src/libcamera/ipa_proxy.cpp
+index 69975d8f..cd9284a3 100644
+--- a/src/libcamera/ipa_proxy.cpp
++++ b/src/libcamera/ipa_proxy.cpp
+@@ -122,33 +122,11 @@ std::string IPAProxy::configurationFile(const std::string &name,
+ 		}
+ 	}
+ 
+-	std::string root = utils::libcameraSourcePath();
+-	if (!root.empty()) {
+-		/*
+-		 * When libcamera is used before it is installed, load
+-		 * configuration files from the source directory. The
+-		 * configuration files are then located in the 'data'
+-		 * subdirectory of the corresponding IPA module.
+-		 */
+-		std::string ipaConfDir = root + "src/ipa/" + ipaName + "/data";
+-
+-		LOG(IPAProxy, Info)
+-			<< "libcamera is not installed. Loading IPA configuration from '"
+-			<< ipaConfDir << "'";
+-
+-		std::string confPath = ipaConfDir + "/" + name;
++	for (const auto &dir : utils::split(IPA_CONFIG_DIR, ":")) {
++		std::string confPath = dir + "/" + ipaName + "/" + name;
+ 		ret = stat(confPath.c_str(), &statbuf);
+ 		if (ret == 0 && (statbuf.st_mode & S_IFMT) == S_IFREG)
+ 			return confPath;
+-
+-	} else {
+-		/* Else look in the system locations. */
+-		for (const auto &dir : utils::split(IPA_CONFIG_DIR, ":")) {
+-			std::string confPath = dir + "/" + ipaName + "/" + name;
+-			ret = stat(confPath.c_str(), &statbuf);
+-			if (ret == 0 && (statbuf.st_mode & S_IFMT) == S_IFREG)
+-				return confPath;
+-		}
+ 	}
+ 
+ 	if (fallbackName.empty()) {
+@@ -197,28 +175,6 @@ std::string IPAProxy::resolvePath(const std::string &file) const
+ 		}
+ 	}
+ 
+-	/*
+-	 * When libcamera is used before it is installed, load proxy workers
+-	 * from the same build directory as the libcamera directory itself.
+-	 * This requires identifying the path of the libcamera.so, and
+-	 * referencing a relative path for the proxy workers from that point.
+-	 */
+-	std::string root = utils::libcameraBuildPath();
+-	if (!root.empty()) {
+-		std::string ipaProxyDir = root + "src/libcamera/proxy/worker";
+-
+-		LOG(IPAProxy, Info)
+-			<< "libcamera is not installed. Loading proxy workers from '"
+-			<< ipaProxyDir << "'";
+-
+-		std::string proxyPath = ipaProxyDir + proxyFile;
+-		if (!access(proxyPath.c_str(), X_OK))
+-			return proxyPath;
+-
+-		return std::string();
+-	}
+-
+-	/* Else try finding the exec target from the install directory. */
+ 	std::string proxyPath = std::string(IPA_PROXY_DIR) + proxyFile;
+ 	if (!access(proxyPath.c_str(), X_OK))
+ 		return proxyPath;
+diff --git a/src/libcamera/pipeline_handler.cpp b/src/libcamera/pipeline_handler.cpp
+index 5ea2ca78..fd8555ca 100644
+--- a/src/libcamera/pipeline_handler.cpp
++++ b/src/libcamera/pipeline_handler.cpp
+@@ -561,25 +561,8 @@ std::string PipelineHandler::configurationFile(const std::string &subdir,
+ 	struct stat statbuf;
+ 	int ret;
+ 
+-	std::string root = utils::libcameraSourcePath();
+-	if (!root.empty()) {
+-		/*
+-		 * When libcamera is used before it is installed, load
+-		 * configuration files from the source directory. The
+-		 * configuration files are then located in the 'data'
+-		 * subdirectory of the corresponding pipeline handler.
+-		 */
+-		std::string confDir = root + "src/libcamera/pipeline/";
+-		confPath = confDir + subdir + "/data/" + name;
+-
+-		LOG(Pipeline, Info)
+-			<< "libcamera is not installed. Loading platform configuration file from '"
+-			<< confPath << "'";
+-	} else {
+-		/* Else look in the system locations. */
+-		confPath = std::string(LIBCAMERA_DATA_DIR)
+-				+ "/pipeline/" + subdir + '/' + name;
+-	}
++	confPath = std::string(LIBCAMERA_DATA_DIR)
++			+ "/pipeline/" + subdir + '/' + name;
+ 
+ 	ret = stat(confPath.c_str(), &statbuf);
+ 	if (ret == 0 && (statbuf.st_mode & S_IFMT) == S_IFREG)
+-- 
+2.44.1
+

overlays/libcamera.nix

@@ -1,48 +1,25 @@
-{ libcamera-src
-, libpisp-src
-, ...
-}:
 final: prev:
 {
-  libpisp = final.stdenv.mkDerivation {
-    name = "libpisp";
-    version = "1.0.6";
-    src = libpisp-src;
-    nativeBuildInputs = with final; [ pkg-config meson ninja ];
-    buildInputs = with final; [ nlohmann_json boost ];
-    # Meson is no longer able to pick up Boost automatically.
-    # https://github.com/NixOS/nixpkgs/issues/86131
-    BOOST_INCLUDEDIR = "${prev.lib.getDev final.boost}/include";
-    BOOST_LIBRARYDIR = "${prev.lib.getLib final.boost}/lib";
-  };
-
   libcamera = prev.libcamera.overrideAttrs (old: {
-    version = "0.2.0";
-    src = libcamera-src;
-    buildInputs = old.buildInputs ++ (with final; [
-      libpisp openssl libtiff
-      (python3.withPackages (ps: with ps; [
-        python3-gnutls pybind11 pyyaml ply
-      ]))
-      libglibutil gst_all_1.gst-plugins-base
-    ]);
-    patches = [ ./0001-Always-installed.patch ];
     postPatch = ''
-      patchShebangs utils/
+      patchShebangs utils/ src/py/
-      patchShebangs src/py/
     '';
-    mesonFlags = [
+
+    patches = [
+      ./0001-Remove-relative-config-lookups.patch
+    ];
+
+    mesonFlags = old.mesonFlags ++ [
       "--buildtype=release"
-      "-Dpipelines=rpi/vc4,rpi/pisp"
+      "-Dpipelines=rpi/vc4"
-      "-Dipas=rpi/vc4,rpi/pisp"
+      "-Dipas=rpi/vc4"
-      "-Dv4l2=true"
       "-Dgstreamer=enabled"
       "-Dtest=false"
-      "-Dlc-compliance=disabled"
+      "-Dcam=enabled"
-      "-Dcam=disabled"
-      "-Dqcam=disabled"
-      "-Ddocumentation=enabled"
-      "-Dpycamera=enabled"
     ];
   });
+
+  camera-streamer = prev.callPackage ../pkgs/camera-streamer/package.nix {
+    libcamera = final.libcamera;
+  };
 }