subprojects/gstreamer-sharp/sources/generated/Gst/GstSharp.BufferForeachMetaFuncNative.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 bool BufferForeachMetaFuncNative(IntPtr buffer, IntPtr meta, IntPtr user_data);
  12
  13         internal class BufferForeachMetaFuncInvoker {
  14
  15                 BufferForeachMetaFuncNative native_cb;
  16                 IntPtr __data;
  17                 GLib.DestroyNotify __notify;
  18
  19                 ~BufferForeachMetaFuncInvoker ()
  20                 {
  21                         if (__notify == null)
  22                                 return;
  23                         __notify (__data);
  24                 }
  25
  26                 internal BufferForeachMetaFuncInvoker (BufferForeachMetaFuncNative native_cb) : this (native_cb, IntPtr.Zero, null) {}
  27
  28                 internal BufferForeachMetaFuncInvoker (BufferForeachMetaFuncNative native_cb, IntPtr data) : this (native_cb, data, null) {}
  29
  30                 internal BufferForeachMetaFuncInvoker (BufferForeachMetaFuncNative 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.BufferForeachMetaFunc Handler {
  38                         get {
  39                                 return new Gst.BufferForeachMetaFunc(InvokeNative);
  40                         }
  41                 }
  42
  43                 bool InvokeNative (Gst.Buffer buffer, out Gst.Meta meta)
  44                 {
  45                         IntPtr native_meta = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (Gst.Meta)));
  46                         bool __result = native_cb (buffer == null ? IntPtr.Zero : buffer.Handle, native_meta, __data);
  47                         meta = Gst.Meta.New (native_meta);
  48                         Marshal.FreeHGlobal (native_meta);
  49                         return __result;
  50                 }
  51         }
  52
  53         internal class BufferForeachMetaFuncWrapper {
  54
  55                 public bool NativeCallback (IntPtr buffer, IntPtr meta, IntPtr user_data)
  56                 {
  57                         try {
  58                                 Gst.Meta mymeta;
  59
  60                                 bool __ret = managed (buffer == IntPtr.Zero ? null : (Gst.Buffer) GLib.Opaque.GetOpaque (buffer, typeof (Gst.Buffer), false), out mymeta);
  61                                 if (meta != IntPtr.Zero) System.Runtime.InteropServices.Marshal.StructureToPtr (mymeta, meta, false);
  62
  63                                 if (release_on_call)
  64                                         gch.Free ();
  65                                 return __ret;
  66                         } catch (Exception e) {
  67                                 GLib.ExceptionManager.RaiseUnhandledException (e, true);
  68                                 // NOTREACHED: Above call does not return.
  69                                 throw e;
  70                         }
  71                 }
  72
  73                 bool release_on_call = false;
  74                 GCHandle gch;
  75
  76                 public void PersistUntilCalled ()
  77                 {
  78                         release_on_call = true;
  79                         gch = GCHandle.Alloc (this);
  80                 }
  81
  82                 internal BufferForeachMetaFuncNative NativeDelegate;
  83                 Gst.BufferForeachMetaFunc managed;
  84
  85                 public BufferForeachMetaFuncWrapper (Gst.BufferForeachMetaFunc managed)
  86                 {
  87                         this.managed = managed;
  88                         if (managed != null)
  89                                 NativeDelegate = new BufferForeachMetaFuncNative (NativeCallback);
  90                 }
  91
  92                 public static Gst.BufferForeachMetaFunc GetManagedDelegate (BufferForeachMetaFuncNative native)
  93                 {
  94                         if (native == null)
  95                                 return null;
  96                         BufferForeachMetaFuncWrapper wrapper = (BufferForeachMetaFuncWrapper) native.Target;
  97                         if (wrapper == null)
  98                                 return null;
  99                         return wrapper.managed;
 100                 }
 101         }
 102 #endregion
 103 }