subprojects/gstreamer-sharp/sources/generated/Gst/GstSharp.IteratorItemFunctionNative.cs

   1 // This file was generated by the Gtk# code generator.
   2 // Any changes made will be lost if regenerated.
   3
   4 namespace GstSharp {
   5
   6         using System;
   7         using System.Runtime.InteropServices;
   8
   9 #region Autogenerated code
  10         [UnmanagedFunctionPointer (CallingConvention.Cdecl)]
  11         internal delegate int IteratorItemFunctionNative(IntPtr it, IntPtr item);
  12
  13         internal class IteratorItemFunctionInvoker {
  14
  15                 IteratorItemFunctionNative native_cb;
  16                 IntPtr __data;
  17                 GLib.DestroyNotify __notify;
  18
  19                 ~IteratorItemFunctionInvoker ()
  20                 {
  21                         if (__notify == null)
  22                                 return;
  23                         __notify (__data);
  24                 }
  25
  26                 internal IteratorItemFunctionInvoker (IteratorItemFunctionNative native_cb) : this (native_cb, IntPtr.Zero, null) {}
  27
  28                 internal IteratorItemFunctionInvoker (IteratorItemFunctionNative native_cb, IntPtr data) : this (native_cb, data, null) {}
  29
  30                 internal IteratorItemFunctionInvoker (IteratorItemFunctionNative native_cb, IntPtr data, GLib.DestroyNotify notify)
  31                 {
  32                         this.native_cb = native_cb;
  33                         __data = data;
  34                         __notify = notify;
  35                 }
  36
  37                 internal Gst.IteratorItemFunction Handler {
  38                         get {
  39                                 return new Gst.IteratorItemFunction(InvokeNative);
  40                         }
  41                 }
  42
  43                 Gst.IteratorItem InvokeNative (Gst.Iterator it, GLib.Value item)
  44                 {
  45                         IntPtr native_item = GLib.Marshaller.StructureToPtrAlloc (item);
  46                         Gst.IteratorItem __result = (Gst.IteratorItem) native_cb (it == null ? IntPtr.Zero : it.Handle, native_item);
  47                         Marshal.FreeHGlobal (native_item);
  48                         return __result;
  49                 }
  50         }
  51
  52         internal class IteratorItemFunctionWrapper {
  53
  54                 public int NativeCallback (IntPtr it, IntPtr item)
  55                 {
  56                         try {
  57                                 Gst.IteratorItem __ret = managed (it == IntPtr.Zero ? null : (Gst.Iterator) GLib.Opaque.GetOpaque (it, typeof (Gst.Iterator), false), (GLib.Value) Marshal.PtrToStructure (item, typeof (GLib.Value)));
  58                                 if (release_on_call)
  59                                         gch.Free ();
  60                                 return (int) __ret;
  61                         } catch (Exception e) {
  62                                 GLib.ExceptionManager.RaiseUnhandledException (e, true);
  63                                 // NOTREACHED: Above call does not return.
  64                                 throw e;
  65                         }
  66                 }
  67
  68                 bool release_on_call = false;
  69                 GCHandle gch;
  70
  71                 public void PersistUntilCalled ()
  72                 {
  73                         release_on_call = true;
  74                         gch = GCHandle.Alloc (this);
  75                 }
  76
  77                 internal IteratorItemFunctionNative NativeDelegate;
  78                 Gst.IteratorItemFunction managed;
  79
  80                 public IteratorItemFunctionWrapper (Gst.IteratorItemFunction managed)
  81                 {
  82                         this.managed = managed;
  83                         if (managed != null)
  84                                 NativeDelegate = new IteratorItemFunctionNative (NativeCallback);
  85                 }
  86
  87                 public static Gst.IteratorItemFunction GetManagedDelegate (IteratorItemFunctionNative native)
  88                 {
  89                         if (native == null)
  90                                 return null;
  91                         IteratorItemFunctionWrapper wrapper = (IteratorItemFunctionWrapper) native.Target;
  92                         if (wrapper == null)
  93                                 return null;
  94                         return wrapper.managed;
  95                 }
  96         }
  97 #endregion
  98 }