gstreamer/gstreamer-sharp/Object.custom

public object this[string property] {
  get {
    GLib.Value v = GetProperty (property);
    object o = v.Val;
    v.Dispose ();
    return o;
  }
  set {
    GLib.Value v = new GLib.Value (this, property);
    v.Val = value;
    SetProperty (property, v);
    v.Dispose ();
  }
}

[DllImport ("libgobject-2.0-0.dll") ]
static extern IntPtr g_object_class_list_properties (IntPtr klass, out uint n_properties);

[DllImport ("libgobject-2.0-0.dll") ]
static extern IntPtr g_object_class_find_property (IntPtr gclass, IntPtr name);

public PropertyInfo GetPropertyInfo (string property) {
  IntPtr klass = Marshal.ReadIntPtr (Handle);

  IntPtr native_property = GLib.Marshaller.StringToPtrGStrdup (property);
  IntPtr pspec = g_object_class_find_property (klass, native_property);
  GLib.Marshaller.Free (native_property);

  if (pspec == IntPtr.Zero)
    throw new ArgumentException ("Unknown property");

  return new PropertyInfo (pspec);
}

public PropertyInfo[] Properties {
  get {
    uint n_properties;
    IntPtr klass = Marshal.ReadIntPtr (Handle);
    IntPtr properties = g_object_class_list_properties (klass, out n_properties);

    PropertyInfo[] ret = new PropertyInfo[n_properties];
    for (int i = 0; i < n_properties; i++) {
      IntPtr pspec_ptr = Marshal.ReadIntPtr (properties, i * IntPtr.Size);
      ret[i] = new PropertyInfo (pspec_ptr);
    }
    GLib.Marshaller.Free (properties);

    return ret;
  }
}

public void Connect (string signal, SignalHandler handler) {
  DynamicSignal.Connect (this, signal, handler);
}

public void Disconnect (string signal, SignalHandler handler) {
  DynamicSignal.Disconnect (this, signal, handler);
}

public void Connect (string signal, Delegate handler) {
  DynamicSignal.Connect (this, signal, handler);
}

public void Disconnect (string signal, Delegate handler) {
  DynamicSignal.Disconnect (this, signal, handler);
}

public object Emit (string signal, params object[] parameters) {
  return DynamicSignal.Emit (this, signal, parameters);
}

[DllImport("libgstreamer-0.10.dll") ]
static extern void gst_object_sink (IntPtr raw);
[DllImport("libgstreamer-0.10.dll") ]
static extern IntPtr gst_object_ref (IntPtr raw);

protected override IntPtr Raw {
  get {
    return base.Raw;
  }
  set {
    if (value != IntPtr.Zero) {
      gst_object_ref (value);
      gst_object_sink (value);
    }
    base.Raw = value;
  }
}


[DllImport("libgstreamer-0.10.dll") ]
static extern bool gst_object_set_parent (IntPtr raw, IntPtr parent);
[DllImport("libgstreamer-0.10.dll") ]
static extern IntPtr gst_object_get_parent (IntPtr raw);

public Gst.Object Parent {
  set {
    bool raw_ret = gst_object_set_parent (Handle, value == null ? IntPtr.Zero : value.Handle);
    if (!raw_ret)
      throw new ApplicationException ();
  }
  get {
    IntPtr raw_ret = gst_object_get_parent (Handle);
    Gst.Object ret = GLib.Object.GetObject (raw_ret, true) as Gst.Object;
    return ret;
  }
}

[DllImport ("gstreamersharpglue-0.10.dll") ]
extern static uint gstsharp_gst_object_get_lock_offset ();

static uint lock_offset = gstsharp_gst_object_get_lock_offset ();
internal IntPtr LockPtr {
  get {
    unsafe {
      IntPtr* raw_ptr = (IntPtr*) ( ( (byte*) Handle) + lock_offset);
      return (*raw_ptr);
    }
  }
}

[DllImport ("libglib-2.0-0.dll") ]
static extern void g_mutex_lock (IntPtr mutex);
[DllImport ("libglib-2.0-0.dll") ]
static extern void g_mutex_unlock (IntPtr mutex);
[DllImport ("libglib-2.0-0.dll") ]
static extern bool g_mutex_trylock (IntPtr mutex);

public void Lock () {
  g_mutex_lock (LockPtr);
}

public void Unlock () {
  g_mutex_unlock (LockPtr);
}

public bool TryLock () {
  return g_mutex_trylock (LockPtr);
}

[DllImport("libgstreamer-0.10.dll") ]
static extern bool gst_object_check_uniqueness (IntPtr list, IntPtr name);

public static bool CheckUniqueness (Gst.Object[] objects, string name) {
  GLib.List list = new GLib.List (objects, typeof (Gst.Object), false, false);
  IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
  bool raw_ret = gst_object_check_uniqueness (list.Handle, native_name);
  bool ret = raw_ret;
  GLib.Marshaller.Free (native_name);
  return ret;
}