info: start to use discoverer and improve the ui

Organize the info pane as a table. Add mime type and duration fields to
container section.

mediainfo/src/mi-info.vala

@@ -24,39 +24,81 @@ using Gst;
 we need to update the vapi for yet unreleased gstreamer api:
 
 cd vala/mediainfo/vapi
-vala-gen-introspect gstreamer-pbutils-0.10 packages/gstreamer-pbutils-0.10 && ../vapigen/vapigen --vapidir . --library \
+vala-gen-introspect gstreamer-pbutils-0.10 packages/gstreamer-pbutils-0.10
-  gstreamer-pbutils-0.10 packages/gstreamer-pbutils-0.10/gstreamer-pbutils-0.10.gi
+vapigen --vapidir . --library gstreamer-pbutils-0.10 packages/gstreamer-pbutils-0.10/gstreamer-pbutils-0.10.gi
  
 */
 
 public class MediaInfo.Info : VBox
 {
-  private Label uri;
+  // ui components
-  private Discoverer dc;
+  private Label mime_type;
+  private Label duration;
   private DrawingArea drawing_area;
+  // gstreamer objects
+  private Discoverer dc;
   private Pipeline pb;
 
   public Info ()
   {
     Label label;
+    Table table;
+    AttachOptions fill = AttachOptions.FILL;
+    AttachOptions fill_exp = AttachOptions.EXPAND|AttachOptions.FILL;
+    uint row = 0;
 
     // configure the view
     set_homogeneous (false);
 
     // add widgets
-    // FIXME: handle aspect ration (AspectFrame.ratio)
+    // FIXME: handle aspect ratio (AspectFrame.ratio)
     // FIXME: paint it black from the start
     drawing_area = new DrawingArea ();
     drawing_area.set_size_request (300, 150);
     pack_start (drawing_area, true, true, 0);
 
-    // FIXME: some alignment issues with the strings
+    table = new Table (5, 2, false);
-    uri = new Label (null);
+    pack_start (table, false, false, 0);
-    pack_start (uri, false, false, 0);
      
     label = new Label (null);
     label.set_markup("<b>Container</b>");
-    pack_start (label, false, false, 0);
+    label.set_alignment (0.0f, 0.5f);
+    table.attach (label, 0, 2, row, row+1, fill_exp, 0, 0, 1);
+    row++;
+
+    label = new Label ("Mime-Type:");
+    label.set_alignment (1.0f, 0.5f);
+    table.attach (label, 0, 1, row, row+1, fill, 0, 0, 0);
+    mime_type = new Label (null);
+    mime_type.set_alignment (0.0f, 0.5f);
+    table.attach (mime_type, 1, 2, row, row+1, fill_exp, 0, 3, 1);
+    row++;
+
+    label = new Label ("Duration:");
+    label.set_alignment (1.0f, 0.5f);
+    table.attach (label, 0, 1, row, row+1, fill, 0, 0, 0);
+    duration = new Label (null);
+    duration.set_alignment (0.0f, 0.5f);
+    table.attach (duration, 1, 2, row, row+1, fill_exp, 0, 3, 1);
+    row++;
+
+    label = new Label (null);
+    label.set_markup("<b>Video Streams</b>");
+    label.set_alignment (0.0f, 0.5f);
+    table.attach (label, 0, 2, row, row+1, fill_exp, 0, 0, 1);
+    row++;
+
+    // TODO: add video stream info widgets
+
+    label = new Label (null);
+    label.set_markup("<b>Audio Streams</b>");
+    label.set_alignment (0.0f, 0.5f);
+    table.attach (label, 0, 2, row, row+1, fill_exp, 0, 0, 1);
+    row++;
+
+    // TODO: add audio stream info widgets
+
+    
     
     show_all ();
 
@@ -64,7 +106,7 @@ public class MediaInfo.Info : VBox
     try {
       dc = new Discoverer ((ClockTime)(Gst.SECOND * 10));
     } catch (Error e) {
-      debug ("Failed to create the discoverer: %s", e.message);
+      debug ("Failed to create the discoverer: %s: %s", e.domain.to_string (), e.message);
     }
 
     pb = ElementFactory.make ("playbin2", "player") as Pipeline;
@@ -89,14 +131,38 @@ public class MediaInfo.Info : VBox
     // stop previous playback
     pb.set_state (State.NULL);
 
-    this.uri.set_text (uri);
+    // TODO: check if uri is a regular (local file)?
     if (uri != null) {
       DiscovererInfo info;
+      bool uncertain;
+
+      string mime_type = g_content_type_guess (uri, null, out uncertain);
+      if (uncertain) {
+        this.mime_type.set_markup (@"<i>$mime_type</i>");
+      } else {
+        this.mime_type.set_text (mime_type);
+      }
 
       try {
         info = dc.discover_uri (uri);
+
+        ClockTime dur = info.get_duration ();
+        string dur_str = "%u:%02u:%02u.%09u".printf (
+          (uint) (dur / (SECOND * 60 * 60)),
+          (uint) ((dur / (SECOND * 60)) % 60),
+          (uint) ((dur / SECOND) % 60),
+          (uint) ((dur) % SECOND));
+        this.duration.set_text (dur_str);
+
+        //stdout.printf ("Duration: %s\n", dur_str);
+
+        // TODO: get more info
+        // list = info.get_video_streams ();
+        // list = info.get_audio_streams ();
+        // list = info.get_container_streams ();
+        
       } catch (Error e) {
-        debug ("Failed to extract metadata from %s: %s", uri, e.message);
+        debug ("Failed to extract metadata from %s: %s: %s", uri, e.domain.to_string (), e.message);
       }
 
       // play file
@@ -119,6 +185,10 @@ public class MediaInfo.Info : VBox
       XOverlay xoverlay = message.src as XOverlay;
       xoverlay.set_xwindow_id (Gdk.x11_drawable_get_xid (drawing_area.window));
 
+      if (message.src.get_class ().find_property ("force-aspect-ratio") != null) {
+        ((GLib.Object)message.src).set_property ("force-aspect-ratio", true);
+      }
+
       drawing_area.unset_flags(Gtk.WidgetFlags.DOUBLE_BUFFERED);
     }
   }