Recorder: Set application info for monitor apps (#293)

Author: ryonakano

src/Application.vala

@@ -145,6 +145,10 @@ public class Application : Adw.Application {
         Intl.bind_textdomain_codeset (Config.GETTEXT_PACKAGE, "UTF-8");
         Intl.textdomain (Config.GETTEXT_PACKAGE);
 
+        // Set human-readable string to the application name that can be used in monitor apps
+        // e.g. pavucontrol or gnome-system-monitor
+        Environment.set_application_name (Config.APP_NAME);
+
         // Load and setup styles
         unowned var display = Gdk.Display.get_default ();
 

src/Config.vala.in

@@ -1,6 +1,7 @@
 namespace Config {
     public const string LOCALEDIR = @LOCALEDIR@;
     public const string GETTEXT_PACKAGE = @GETTEXT_PACKAGE@;
+    public const string APP_NAME = @APP_NAME@;
     public const string APP_ID = @APP_ID@;
     public const string APP_VERSION = @APP_VERSION@;
     public const string RESOURCE_PREFIX = @RESOURCE_PREFIX@;

src/Model/Recorder.vala

@@ -151,6 +151,16 @@ namespace Model {
 
                 sys_sound.set ("device", monitor_name);
                 debug ("sound source (system): \"Monitor of %s\"", default_sink.display_name);
+
+                // Set properties that can be used in monitor apps e.g. pavucontrol or gnome-system-monitor
+                var pa_props = new Gst.Structure.from_string (
+                    "props" + ",media.role=music"
+                            + ",application.id=" + Config.APP_ID
+                            + ",application.icon_name=" + Config.APP_ID
+                    , null
+                );
+                sys_sound.set ("stream-properties", pa_props);
+
                 pipeline.add (sys_sound);
                 sys_sound.get_static_pad ("src").link (mixer.request_pad_simple ("sink_%u"));
             }
@@ -165,6 +175,16 @@ namespace Model {
                 }
 
                 debug ("sound source (microphone): \"%s\"", microphone.display_name);
+
+                // Set properties that can be used in monitor apps e.g. pavucontrol or gnome-system-monitor
+                var pa_props = new Gst.Structure.from_string (
+                    "props" + ",media.role=music"
+                            + ",application.id=" + Config.APP_ID
+                            + ",application.icon_name=" + Config.APP_ID
+                    , null
+                );
+                mic_sound.set ("stream-properties", pa_props);
+
                 pipeline.add (mic_sound);
                 mic_sound.get_static_pad ("src").link (mixer.request_pad_simple ("sink_%u"));
             }

src/meson.build

@@ -1,6 +1,7 @@
 config_data = configuration_data()
 config_data.set_quoted('LOCALEDIR', get_option('prefix') / get_option('localedir'))
 config_data.set_quoted('GETTEXT_PACKAGE', meson.project_name())
+config_data.set_quoted('APP_NAME', app_name)
 config_data.set_quoted('APP_ID', app_id)
 config_data.set_quoted('APP_VERSION', app_version)
 config_data.set_quoted('RESOURCE_PREFIX', '/' + meson.project_name().replace('.', '/'))