Fix Gst.Preset bindings

As C# interfaces don't allow a default implementation we
add a static Gst.PresetDefault class that provides static
methods for calling the default GstPreset method implementations.

4 files changed, 243 insertions, 1 deletions

diff --git a/gstreamer-sharp/Gstreamer.metadata b/gstreamer-sharp/Gstreamer.metadata
index cb19ef9..ec0f03c 100644
--- a/gstreamer-sharp/Gstreamer.metadata
+++ b/gstreamer-sharp/Gstreamer.metadata
@@ -729,6 +729,18 @@
   <attr path="/api/namespace/object[@name='PluginFeature']/method[@cname='gst_plugin_feature_type_name_filter']" name="hidden">1</attr>
 
   <attr path="/api/namespace/class[@name='Print']" name="hidden">1</attr>
+  
+  <attr path="/api/namespace/interface[@name='Preset']/property" name="hidden">1</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/method[@cname='gst_preset_get_preset_names']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/method[@cname='gst_preset_get_preset_names']/return-type" name="null_term_array">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/virtual_method[@cname='get_preset_names']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/virtual_method[@cname='get_preset_names']/return-type" name="null_term_array">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/method[@cname='gst_preset_get_property_names']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/method[@cname='gst_preset_get_property_names']/return-type" name="null_term_array">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/virtual_method[@cname='get_property_names']/return-type" name="owned">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/virtual_method[@cname='get_property_names']/return-type" name="null_term_array">true</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/method[@cname='gst_preset_get_meta']/parameters/parameter[@name='value']" name="pass_as">out</attr>
+  <attr path="/api/namespace/interface[@name='Preset']/virtual_method[@cname='get_meta']/parameters/parameter[@name='value']" name="pass_as">out</attr>
 
   <change-node-type path="/api/namespace/object[@name='Query']">boxed</change-node-type>
   <attr path="/api/namespace/boxed[@name='Query']" name="opaque">true</attr>
diff --git a/gstreamer-sharp/Makefile.am b/gstreamer-sharp/Makefile.am
index 9a7d4e6..f487ac2 100644
--- a/gstreamer-sharp/Makefile.am
+++ b/gstreamer-sharp/Makefile.am
@@ -49,7 +49,8 @@ sources = \
 	plugins-base/TypeFindElement.cs \
 	GstSharp.PadQueryTypeFunctionNative.cs \
 	PadQueryTypeFunction.cs \
-	TypeFindDelegates.cs
+	TypeFindDelegates.cs \
+	PresetDefault.cs
 
 overrides = \
 	override/URIHandlerAdapter.cs
diff --git a/gstreamer-sharp/PresetDefault.cs b/gstreamer-sharp/PresetDefault.cs
new file mode 100644
index 0000000..ded7b52
--- /dev/null
+++ b/gstreamer-sharp/PresetDefault.cs
@@ -0,0 +1,115 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Gst {
+  public static class PresetDefault {
+    [StructLayout (LayoutKind.Sequential) ]
+    struct GstPresetInterface {
+      public GetPresetNamesNativeDelegate GetPresetNames;
+      public GetPropertyNamesNativeDelegate GetPropertyNames;
+      public LoadPresetNativeDelegate LoadPreset;
+      public SavePresetNativeDelegate SavePreset;
+      public RenamePresetNativeDelegate RenamePreset;
+      public DeletePresetNativeDelegate DeletePreset;
+      public SetMetaNativeDelegate SetMeta;
+      public GetMetaNativeDelegate GetMeta;
+      [MarshalAs (UnmanagedType.ByValArray, SizeConst=4) ]
+      public IntPtr[] GstReserved;
+    }
+    delegate IntPtr GetPresetNamesNativeDelegate (IntPtr inst);
+    delegate IntPtr GetPropertyNamesNativeDelegate (IntPtr inst);
+    delegate bool LoadPresetNativeDelegate (IntPtr inst, IntPtr name);
+    delegate bool SavePresetNativeDelegate (IntPtr inst, IntPtr name);
+    delegate bool RenamePresetNativeDelegate (IntPtr inst, IntPtr old_name, IntPtr new_name);
+    delegate bool DeletePresetNativeDelegate (IntPtr inst, IntPtr name);
+    delegate bool SetMetaNativeDelegate (IntPtr inst, IntPtr name, IntPtr tag, IntPtr value);
+    delegate bool GetMetaNativeDelegate (IntPtr inst, IntPtr name, IntPtr tag, out IntPtr value);
+
+    static GstPresetInterface default_iface;
+
+    [DllImport ("libgobject-2.0-0.dll") ]
+    static extern IntPtr g_type_default_interface_ref (IntPtr type);
+    [DllImport ("gstreamer-0.10.dll") ]
+    static extern IntPtr gst_preset_get_type();
+
+    static PresetDefault () {
+      IntPtr type = gst_preset_get_type ();
+      if (type == IntPtr.Zero)
+        throw new Exception ("Can't get GstPreset interface type");
+      IntPtr native_iface = g_type_default_interface_ref (type);
+      if (native_iface == IntPtr.Zero)
+        throw new Exception ("Can't get GstPreset default interface vtable");
+      default_iface = (GstPresetInterface) Marshal.PtrToStructure (native_iface, typeof (GstPresetInterface));
+    }
+
+    public static bool DeletePreset (GLib.Object o, string name) {
+      IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
+      bool raw_ret = default_iface.DeletePreset (o.Handle, native_name);
+      bool ret = raw_ret;
+      GLib.Marshaller.Free (native_name);
+      return ret;
+    }
+
+    public static string[] GetPropertyNames (GLib.Object o) {
+      IntPtr raw_ret = default_iface.GetPropertyNames (o.Handle);
+      string[] ret = GLib.Marshaller.NullTermPtrToStringArray (raw_ret, true);
+      return ret;
+    }
+
+    public static bool RenamePreset (GLib.Object o, string old_name, string new_name) {
+      IntPtr native_old_name = GLib.Marshaller.StringToPtrGStrdup (old_name);
+      IntPtr native_new_name = GLib.Marshaller.StringToPtrGStrdup (new_name);
+      bool raw_ret = default_iface.RenamePreset (o.Handle, native_old_name, native_new_name);
+      bool ret = raw_ret;
+      GLib.Marshaller.Free (native_old_name);
+      GLib.Marshaller.Free (native_new_name);
+      return ret;
+    }
+
+    public static bool SetMeta (GLib.Object o, string name, string tag, string value) {
+      IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
+      IntPtr native_tag = GLib.Marshaller.StringToPtrGStrdup (tag);
+      IntPtr native_value = GLib.Marshaller.StringToPtrGStrdup (value);
+      bool raw_ret = default_iface.SetMeta (o.Handle, native_name, native_tag, native_value);
+      bool ret = raw_ret;
+      GLib.Marshaller.Free (native_name);
+      GLib.Marshaller.Free (native_tag);
+      GLib.Marshaller.Free (native_value);
+      return ret;
+    }
+
+    public static bool LoadPreset (GLib.Object o, string name) {
+      IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
+      bool raw_ret = default_iface.LoadPreset (o.Handle, native_name);
+      bool ret = raw_ret;
+      GLib.Marshaller.Free (native_name);
+      return ret;
+    }
+
+    public static bool GetMeta (GLib.Object o, string name, string tag, out string value) {
+      IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
+      IntPtr native_tag = GLib.Marshaller.StringToPtrGStrdup (tag);
+      IntPtr native_value;
+      bool raw_ret = default_iface.GetMeta (o.Handle, native_name, native_tag, out native_value);
+      bool ret = raw_ret;
+      GLib.Marshaller.Free (native_name);
+      GLib.Marshaller.Free (native_tag);
+      value = GLib.Marshaller.PtrToStringGFree (native_value);
+      return ret;
+    }
+
+    public static string[] GetPresetNames (GLib.Object o) {
+      IntPtr raw_ret = default_iface.GetPresetNames (o.Handle);
+      string[] ret = GLib.Marshaller.NullTermPtrToStringArray (raw_ret, true);
+      return ret;
+    }
+
+    public static bool SavePreset (GLib.Object o, string name) {
+      IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup (name);
+      bool raw_ret = default_iface.SavePreset (o.Handle, native_name);
+      bool ret = raw_ret;
+      GLib.Marshaller.Free (native_name);
+      return ret;
+    }
+  }
+}
diff --git a/gstreamer-sharp/gstreamer-api.raw b/gstreamer-sharp/gstreamer-api.raw
index 82edcd8..bb491a9 100644
--- a/gstreamer-sharp/gstreamer-api.raw
+++ b/gstreamer-sharp/gstreamer-api.raw
@@ -794,6 +794,120 @@
         </parameters>
       </method>
     </interface>
+    <interface name="Preset" cname="GstPreset">
+      <class_struct cname="GstPresetInterface">
+        <field name="Parent" cname="parent" type="GTypeInterface" />
+        <method vm="get_preset_names" />
+        <method vm="get_property_names" />
+        <method vm="load_preset" />
+        <method vm="save_preset" />
+        <method vm="rename_preset" />
+        <method vm="delete_preset" />
+        <method vm="set_meta" />
+        <method vm="get_meta" />
+        <field name="GstReserved" cname="_gst_reserved" type="gpointer" array_len="GST_PADDING" />
+      </class_struct>
+      <property name="PresetName" cname="preset-name" type="gchar*" writeable="true" />
+      <virtual_method name="GetPresetNames" cname="get_preset_names">
+        <return-type type="gchar**" />
+        <parameters />
+      </virtual_method>
+      <virtual_method name="GetPropertyNames" cname="get_property_names">
+        <return-type type="gchar**" />
+        <parameters />
+      </virtual_method>
+      <virtual_method name="LoadPreset" cname="load_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+        </parameters>
+      </virtual_method>
+      <virtual_method name="SavePreset" cname="save_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+        </parameters>
+      </virtual_method>
+      <virtual_method name="RenamePreset" cname="rename_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="old_name" />
+          <parameter type="const-gchar*" name="new_name" />
+        </parameters>
+      </virtual_method>
+      <virtual_method name="DeletePreset" cname="delete_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+        </parameters>
+      </virtual_method>
+      <virtual_method name="SetMeta" cname="set_meta">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+          <parameter type="const-gchar*" name="tag" />
+          <parameter type="const-gchar*" name="value" />
+        </parameters>
+      </virtual_method>
+      <virtual_method name="GetMeta" cname="get_meta">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+          <parameter type="const-gchar*" name="tag" />
+          <parameter type="gchar**" name="value" />
+        </parameters>
+      </virtual_method>
+      <method name="DeletePreset" cname="gst_preset_delete_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+        </parameters>
+      </method>
+      <method name="GetMeta" cname="gst_preset_get_meta">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+          <parameter type="const-gchar*" name="tag" />
+          <parameter type="gchar**" name="value" />
+        </parameters>
+      </method>
+      <method name="GetPresetNames" cname="gst_preset_get_preset_names">
+        <return-type type="gchar**" />
+      </method>
+      <method name="GetPropertyNames" cname="gst_preset_get_property_names">
+        <return-type type="gchar**" />
+      </method>
+      <method name="GetType" cname="gst_preset_get_type" shared="true">
+        <return-type type="GType" />
+      </method>
+      <method name="LoadPreset" cname="gst_preset_load_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+        </parameters>
+      </method>
+      <method name="RenamePreset" cname="gst_preset_rename_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="old_name" />
+          <parameter type="const-gchar*" name="new_name" />
+        </parameters>
+      </method>
+      <method name="SavePreset" cname="gst_preset_save_preset">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+        </parameters>
+      </method>
+      <method name="SetMeta" cname="gst_preset_set_meta">
+        <return-type type="gboolean" />
+        <parameters>
+          <parameter type="const-gchar*" name="name" />
+          <parameter type="const-gchar*" name="tag" />
+          <parameter type="const-gchar*" name="value" />
+        </parameters>
+      </method>
+    </interface>
     <interface name="TagSetter" cname="GstTagSetter">
       <class_struct cname="GstTagSetterIFace">
         <field name="GIface" cname="g_iface" type="GTypeInterface" />