media-session: add config files

Remove -e and -d options
Manage modules in media-session.conf
Add alsa-monitor.conf that can match node/device properties with
a regex and update properties on it. All previous configuration and
more cane be done with this.

src/daemon/media-session.d/alsa-monitor.conf

@@ -0,0 +1,57 @@
+{
+  "properties": {
+  },
+  "rules": [
+    {
+      "#": [ "rules for matching a device or node. It is an array of",
+             "properties that all need to match the regexp. If any of the",
+	     "matches work, the actions are executed for the object."
+           ],
+
+      "matches": [
+        {
+          "device.name": "~alsa_card.*"
+	}
+      ],
+      "actions": {
+        "#": [ "actions can update properties on the matched object."
+             ],
+
+        "update-props": {
+           "api.alsa.use-acp": true,
+	   "#api.alsa.use-ucm": true,
+           "#api.alsa.soft-mixer": false,
+	   "#api.alsa.ignore-dB": false,
+	   "#device.profile-set": "profileset-name",
+	   "#device.profile": "default profile name",
+           "#api.acp.auto-port": true,
+           "#api.acp.auto-profile": true
+           "#device.nick": "My Device",
+        }
+      }
+    },
+    {
+      "matches": [
+        {
+          "node.name": "~alsa_input.*"
+	},
+        {
+          "node.name": "~alsa_output.*"
+	}
+      ],
+      "actions": {
+        "update-props": {
+           "#node.nick": "My Node",
+           "#node.nick": null,
+           "#priority.driver": 100,
+           "#resample.quality": 4,
+	   "#channelmix.normalize": false,
+	   "#channelmix.mix-lfe": false,
+	   "#audio.format": "S16LE",
+	   "#audio.rate": 44100,
+	   "#audio.position": "FL,FR"
+        }
+      }
+    }
+  ]
+}

src/daemon/media-session.d/media-session.conf

@@ -0,0 +1,55 @@
+{
+  "properties": {
+  },
+  "spa-libs": {
+    "#": [ "Mapping from factory name to library."
+         ],
+
+    "api.bluez5.*":    "bluez5/libspa-bluez5",
+    "api.alsa.*":      "alsa/libspa-alsa",
+    "api.v4l2.*":      "v4l2/libspa-v4l2",
+    "api.libcamera.*": "libcamera/libspa-libcamera"
+  },
+  "modules": {
+    "#": [ "These are the modules that are enabled when a file with",
+           "the key name is found in the media-session.d config directory.",
+	   "the default bundle is always enabled."
+	 ],
+
+    "default": [
+      "flatpak",		"# manages flatpak access",
+      "portal",			"# manage portal permissions",
+      "v4l2",			"# video for linux udev detection",
+      "#libcamera",		"# libcamera udev detection",
+      "suspend-node",		"# suspend inactive nodes",
+      "policy-node",		"# configure and link nodes",
+      "#metadata",		"# export metadata API",
+      "#default-nodes",		"# restore default nodes",
+      "#default-profile",	"# restore default profiles", 
+      "#default-routes",	"# restore default route",
+      "#alsa-seq",		"# alsa seq midi support",
+      "#alsa-monitor",		"# alsa udev detection",
+      "#bluez5",		"# bluetooth support",
+      "#restore-stream",	"#restore stream settings"
+    ],
+    "with-audio": [
+      "metadata",
+      "default-nodes",
+      "default-profile",
+      "default-routes",
+      "alsa-seq",
+      "alsa-monitor"
+    ],
+    "with-alsa": [
+      "with-audio"
+    ],
+    "with-jack": [
+      "with-audio"
+    ],
+    "with-pulseaudio": [
+      "with-audio",
+      "bluez5",
+      "restore-stream"
+    ]
+  }
+}

src/daemon/meson.build

@@ -22,7 +22,11 @@ conf_config.set('pipewire_pulse_path', join_paths(pipewire_bindir, 'pipewire-pul
 conf_install_dir = join_paths(get_option('sysconfdir'), 'pipewire')
 
 install_data(
-  sources : ['media-session.d/with-jack', 'media-session.d/with-pulseaudio'],
+  sources : [
+    'media-session.d/with-jack',
+    'media-session.d/with-pulseaudio',
+    'media-session.d/media-session.conf',
+    'media-session.d/alsa-monitor.conf' ],
   install_dir : join_paths(conf_install_dir, 'media-session.d'))
 
 conf_config_uninstalled = conf_config