Fix Gst.Element bindings

Still missing: Support for creating new element subclasses
and adding pad templates/setting details on them.

3 files changed, 203 insertions, 62 deletions

diff --git a/gstreamer-sharp/Element.custom b/gstreamer-sharp/Element.custom
index 8a0e7c0..9ab37ec 100644
--- a/gstreamer-sharp/Element.custom
+++ b/gstreamer-sharp/Element.custom
@@ -1,94 +1,193 @@
+[DllImport ("gobject-2.0-0.dll") ]
+static extern IntPtr g_object_ref (IntPtr raw);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern bool gst_element_add_pad (IntPtr raw, IntPtr pad);
 
-public object this[string property] {
-  get {
-    return GetProperty (property).Val;
-  }
-  set {
-    SetProperty (property, value);
-  }
+public bool AddPad (Pad p) {
+  bool ret = gst_element_add_pad (this.Handle, p == null ? IntPtr.Zero : p.Handle);
+  if (ret)
+    g_object_ref (p.Handle);
+  return ret;
 }
 
-public new GLib.Value GetProperty (string propertyName) {
-  return base.GetProperty (propertyName);
-}
+public static bool LinkMany (params Element [] elements) {
+  for (int i = 0; i < elements.Length - 1; i++) {
+    if (!elements[i].Link (elements[i+1]))
+      return false;
+  }
 
-public new void SetProperty (string propertyName, GLib.Value value) {
-  base.SetProperty (propertyName, value);
+  return true;
 }
 
-public void SetProperty (string propertyName, object value) {
-  base.SetProperty (propertyName, new GLib.Value (value));
+public static void UnlinkMany (params Element [] elements) {
+  for (int i = 0; i < elements.Length - 1; i++) {
+    elements[i].Unlink (elements[i+1]);
+  }
 }
 
-public void SetProperty (string propertyName, string value) {
-  base.SetProperty (propertyName, new GLib.Value (value));
-}
+[DllImport ("gstreamer-0.10.dll") ]
+static extern int gst_iterator_next (IntPtr iterator, out IntPtr elem);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern void gst_iterator_resync (IntPtr iterator);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern void gst_iterator_free (IntPtr iterator);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern IntPtr gst_element_iterate_pads (IntPtr element);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern IntPtr gst_element_iterate_src_pads (IntPtr element);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern IntPtr gst_element_iterate_sink_pads (IntPtr element);
+
+private class PadEnumerable : IEnumerable {
+  private class PadEnumerator : IEnumerator {
+    Hashtable seen = new Hashtable ();
+    IntPtr iterator;
+
+    private object current = null;
+    public object Current {
+      get {
+        return current;
+      }
+    }
+
+    public bool MoveNext () {
+      IntPtr raw_ret;
+      bool retry = false;
+
+      do {
+        int ret = gst_iterator_next (iterator, out raw_ret);
+        switch (ret) {
+          case 0:
+            return false;
+          case 1:
+            if (seen.Contains (raw_ret)) {
+              retry = true;
+              break;
+            }
+
+            seen.Add (raw_ret, null);
+            current = GLib.Object.GetObject (raw_ret, true);
+            return true;
+          case 2:
+            gst_iterator_resync (iterator);
+            break;
+          default:
+          case 3:
+            throw new Exception ("Error while iterating pads");
+        }
+      } while (retry);
 
-public void SetProperty (string propertyName, int value) {
-  base.SetProperty (propertyName, new GLib.Value (value));
-}
+      return false;
+    }
 
-public void SetProperty (string propertyName, double value) {
-  base.SetProperty (propertyName, new GLib.Value (value));
-}
+    public void Reset () {
+      seen.Clear ();
+      gst_iterator_resync (iterator);
+    }
 
-public void SetProperty (string propertyName, bool value) {
-  base.SetProperty (propertyName, new GLib.Value (value));
-}
+    public PadEnumerator (IntPtr iterator) {
+      this.iterator = iterator;
+    }
+  }
+
+  private IntPtr iterator;
+  private PadEnumerator enumerator;
+
+  public PadEnumerable (IntPtr iterator) {
+    this.iterator = iterator;
+    this.enumerator = new PadEnumerator (iterator);
+  }
 
+  public IEnumerator GetEnumerator () {
+    return enumerator;
+  }
 
-public bool QueryPosition (Gst.Format format, out long current) {
-  return gst_element_query_position (Handle, ref format, out current);
+  ~PadEnumerable () {
+    gst_iterator_free (iterator);
+  }
 }
 
+public IEnumerable Pads {
+  get {
+    return new PadEnumerable (gst_element_iterate_pads (Handle));
+  }
+}
 
-public bool QueryDuration (Gst.Format format, out long duration) {
-  return gst_element_query_duration (Handle, ref format, out duration);
+public IEnumerable SinkPads {
+  get {
+    return new PadEnumerable (gst_element_iterate_sink_pads (Handle));
+  }
 }
 
-public void Connect (string signal, DynamicSignalHandler handler) {
-  DynamicSignal.Connect (this, signal, handler);
+public IEnumerable SrcPads {
+  get {
+    return new PadEnumerable (gst_element_iterate_src_pads (Handle));
+  }
 }
 
-public void Disconnect (string signal, DynamicSignalHandler handler) {
-  DynamicSignal.Disconnect (this, signal, handler);
+public Gst.StateChangeReturn GetState (out Gst.State state, ulong timeout) {
+  Gst.State pending;
+  return GetState (out state, out pending, timeout);
 }
 
-public object Emit (string signal, params object[] parameters) {
-  return DynamicSignal.Emit (this, signal, parameters);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern void gst_element_found_tags (IntPtr raw, IntPtr list);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern IntPtr gst_tag_list_copy (IntPtr raw);
+
+public void FoundTags (Gst.TagList list) {
+  gst_element_found_tags (Handle, list == null ? IntPtr.Zero : gst_tag_list_copy (list.Handle));
 }
 
-[DllImport ("gobject-2.0-0.dll") ]
-static extern IntPtr g_object_ref (IntPtr raw);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern void gst_element_found_tags_for_pad (IntPtr raw, IntPtr pad, IntPtr list);
 
-public bool AddPad (Pad p) {
-  bool ret = gst_element_add_pad (this.Handle, p == null ? IntPtr.Zero : p.Handle);
-  if (ret)
-    g_object_ref (p.Handle);
-  return ret;
+public void FoundTagsForPad (Gst.Pad pad, Gst.TagList list) {
+  gst_element_found_tags_for_pad (Handle, pad == null ? IntPtr.Zero : pad.Handle, list == null ? IntPtr.Zero : gst_tag_list_copy (list.Handle));
 }
 
-public static bool LinkMany (params Element [] elements) {
-  for (int i = 0; i < elements.Length - 1; i++) {
-    if (!elements[i].Link (elements[i+1]))
-      return false;
-  }
+[DllImport ("gstreamer-0.10.dll") ]
+static extern bool gst_element_post_message (IntPtr raw, IntPtr message);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern IntPtr gst_mini_object_ref (IntPtr raw);
 
-  return true;
+public bool PostMessage (Gst.Message message) {
+  bool raw_ret = gst_element_post_message (Handle, message == null ? IntPtr.Zero : gst_mini_object_ref (message.Handle));
+  bool ret = raw_ret;
+  return ret;
 }
 
-public static void UnlinkMany (params Element [] elements) {
-  for (int i = 0; i < elements.Length - 1; i++) {
-    elements[i].Unlink (elements[i+1]);
+[DllImport ("gstreamer-0.10.dll") ]
+static extern IntPtr gst_element_get_query_types (IntPtr raw);
+
+public Gst.QueryType[] GetQueryTypes () {
+  IntPtr raw_ret = gst_element_get_query_types (Handle);
+  if (raw_ret == IntPtr.Zero)
+    return new Gst.QueryType[] {};
+
+  ArrayList result = new ArrayList ();
+  bool term = false;
+  int ofs = 0;
+  while (!term) {
+    Gst.QueryType t = (Gst.QueryType) Marshal.ReadInt32 (raw_ret, ofs);
+    if (t == Gst.QueryType.None) {
+      term = true;
+    } else {
+      result.Add (t);
+      ofs += 4;
+    }
   }
+
+  return (Gst.QueryType[]) result.ToArray (typeof (Gst.QueryType));
 }
 
 
-[DllImport ("gstreamer-0.10.dll") ]
-private static extern bool gst_element_query_position (IntPtr raw, ref Format format, out long cur);
+		[DllImport("gstreamer-0.10.dll")]
+		static extern bool gst_element_send_event(IntPtr raw, IntPtr evnt);
 
-[DllImport ("gstreamer-0.10.dll") ]
-private static extern bool gst_element_query_duration (IntPtr raw, ref Format format, out long duration);
+		public bool SendEvent(Gst.Event evnt) {
+			bool raw_ret = gst_element_send_event(Handle, evnt == null ? IntPtr.Zero : gst_mini_object_ref (evnt.Handle));
+			bool ret = raw_ret;
+			return ret;
+		}
 
-[DllImport ("gstreamer-0.10.dll") ]
-static extern bool gst_element_add_pad (IntPtr raw, IntPtr pad);
diff --git a/gstreamer-sharp/Gstreamer.metadata b/gstreamer-sharp/Gstreamer.metadata
index 458fe9f..f2a1c73 100644
--- a/gstreamer-sharp/Gstreamer.metadata
+++ b/gstreamer-sharp/Gstreamer.metadata
@@ -246,19 +246,40 @@
   <attr path="/api/namespace/enum[@name='ClockFlags']/member[@cname='GST_CLOCK_FLAG_CAN_SET_RESOLUTION']" name="value">MiniObjectFlags.Last &lt;&lt; 4</attr>
   <attr path="/api/namespace/enum[@name='ClockFlags']/member[@cname='GST_CLOCK_FLAG_CAN_SET_MASTER']" name="value">MiniObjectFlags.Last &lt;&lt; 5</attr>
   <attr path="/api/namespace/enum[@name='ClockFlags']/member[@cname='GST_CLOCK_FLAG_LAST']" name="value">MiniObjectFlags.Last &lt;&lt; 8</attr>
 
   <attr path="/api/namespace/class[@name='Debug']" name="hidden">1</attr>
 
-  <attr path="/api/namespace/object[@name='Element']/method[@name='LinkMany']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@name='Element']/method[@name='UnlinkMany']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_link_many']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/field" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_unlink_many']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_add_pad']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_pad']" name="hidden">1</attr>
   <attr path="/api/namespace/object[@name='Element']/signal[@name='NoMorePads']" name="name">HasNoMorePads</attr>
   <attr path="/api/namespace/object[@name='Element']/method[@name='ContinueState']/parameters/*[@name='ret']" name="name">state_change_ret</attr>
-  <attr path="/api/namespace/object[@name='Element']/method[@name='QueryPosition']" name="hidden">1</attr>
-  <attr path="/api/namespace/object[@name='Element']/method[@name='QueryDuration']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_query_position']/parameters/parameter[@name='format']" name="pass_as">ref</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_query_duration']/parameters/parameter[@name='format']" name="pass_as">ref</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_query_convert']/parameters/parameter[@name='dest_format']" name="pass_as">ref</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_compatible_pad']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_request_pad']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_static_pad']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_bus']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_clock']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_get_index']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_provide_clock']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_requires_clock']" name="name">GetRequiresClock</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_provides_clock']" name="name">GetProvidesClock</attr>
+  <move-node path="/api/namespace/object[@name='Element']/method[@cname='gst_element_state_get_name']">/api/namespace/class[@name='Util']</move-node>
+  <move-node path="/api/namespace/object[@name='Element']/method[@cname='gst_element_state_change_return_get_name']">/api/namespace/class[@name='Util']</move-node>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_found_tags']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_found_tags_for_pad']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_message_full']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_post_message']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_send_event']" name="hidden">1</attr>
+  <attr path="/api/namespace/object[@name='Element']/method[@cname='gst_element_seek_simple']" name="name">Seek</attr>
+  <remove-attr path="/api/namespace/object[@name='Element']/field[@name='CurrentState']" name="hidden"/>
 
   <attr path="/api/namespace/object[@name='ElementFactory']/method[@name='Make']/return-type" name="owned">true</attr>
   <attr path="/api/namespace/object[@name='ElementFactory']/method[@name='Create']/return-type" name="owned">true</attr>
   <attr path="/api/namespace/object[@name='ElementFactory']/method[@cname='gst_element_factory_get_uri_protocols']/return-type" name="null_term_array">1</attr>
   <attr path="/api/namespace/object[@name='ElementFactory']/method[@cname='gst_element_factory_get_uri_protocols']/return-type" name="owned">false</attr>
   <attr path="/api/namespace/object[@name='ElementFactory']/method[@cname='gst_element_factory_get_uri_protocols']/return-type" name="elements_owned">false</attr>
diff --git a/gstreamer-sharp/Object.custom b/gstreamer-sharp/Object.custom
index b1e76e2..ccd5fd0 100644
--- a/gstreamer-sharp/Object.custom
+++ b/gstreamer-sharp/Object.custom
@@ -1,6 +1,27 @@
+public object this[string property] {
+  get {
+    return GetProperty (property).Val;
+  }
+  set {
+    SetProperty (property, new GLib.Value (value));
+  }
+}
+
+public void Connect (string signal, DynamicSignalHandler handler) {
+  DynamicSignal.Connect (this, signal, handler);
+}
+
+public void Disconnect (string signal, DynamicSignalHandler handler) {
+  DynamicSignal.Disconnect (this, signal, handler);
+}
+
+public object Emit (string signal, params object[] parameters) {
+  return DynamicSignal.Emit (this, signal, parameters);
+}
+
 [DllImport ("gstreamer-0.10.dll") ]
 static extern void gst_object_sink (IntPtr raw);
 [DllImport ("gstreamer-0.10.dll") ]
 static extern IntPtr gst_object_ref (IntPtr raw);
 
 protected override IntPtr Raw {