simple playback

src/api.vala

@@ -356,4 +356,8 @@ public class Wavelet.Subsonic : Object {
 
         assert (reader.get_error () == null);
     }
+
+    public string stream_uri (string id) {
+        return @"$(this.url)/rest/stream?id=$(id)&$(this.parameters)";
+    }
 }

src/application.vala

@@ -19,6 +19,7 @@
  */
 
 Sqlite.Database config_db;
+Gst.Element playbin;
 
 public class Wavelet.Application : Adw.Application {
     public Application () {
@@ -27,6 +28,9 @@ public class Wavelet.Application : Adw.Application {
             flags: ApplicationFlags.DEFAULT_FLAGS
         );
 
+        playbin = Gst.ElementFactory.make ("playbin3", null);
+        assert (playbin != null);
+
         var app_config_dir = Path.build_filename (Environment.get_user_config_dir (), "wavelet");
         try {
             File.new_build_filename (app_config_dir).make_directory_with_parents ();
@@ -83,6 +87,12 @@ public class Wavelet.Application : Adw.Application {
                     win.shuffle_all_tracks.sensitive = true;
                 });
             });
+
+            win.play_queue.play_now.connect ((song) => {
+                playbin.set_state (Gst.State.READY);
+                playbin.set ("uri", api.stream_uri (song.id));
+                playbin.set_state (Gst.State.PLAYING);
+            });
         });
         win.setup.load (config_db);
     }

src/main.vala

@@ -23,6 +23,8 @@ int main (string[] args) {
     Intl.bind_textdomain_codeset (Config.GETTEXT_PACKAGE, "UTF-8");
     Intl.textdomain (Config.GETTEXT_PACKAGE);
 
+    Gst.init (ref args);
+
     var app = new Wavelet.Application ();
     return app.run (args);
 }

src/meson.build

@@ -11,6 +11,7 @@ wavelet_sources = [
 
 wavelet_deps = [
   config_dep,
+  dependency('gstreamer-1.0'),
   dependency('gtk4'),
   dependency('json-glib-1.0'),
   dependency('libadwaita-1', version: '>= 1.4'),

src/play_queue.blp

@@ -10,6 +10,8 @@ template $WaveletPlayQueue: Adw.NavigationPage {
 
     ScrolledWindow {
       ListView list_view {
+        single-click-activate: true;
+
         factory: BuilderListItemFactory {
           template ListItem {
             child: Label {

src/play_queue.vala

@@ -25,9 +25,16 @@ public class Wavelet.PlayQueue : Adw.NavigationPage {
     private ListStore songs;
     private uint current;
 
+    public signal void play_now (Song song);
+
     construct {
         this.songs = new ListStore (typeof (Song));
         this.list_view.model = new Gtk.NoSelection (this.songs);
+
+        this.list_view.activate.connect ((position) => {
+            Song song = (Song) this.songs.get_item(position);
+            this.play_now (song);
+        });
     }
 
     public void clear () {