gstreamer/sources/generated/Gst/GstSharp.BufferForeachMetaFuncNative.cs

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2018-01-29 18:56:49 +00:00
// This file was generated by the Gtk# code generator.
// Any changes made will be lost if regenerated.
namespace GstSharp {
using System;
using System.Runtime.InteropServices;
#region Autogenerated code
[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
internal delegate bool BufferForeachMetaFuncNative(IntPtr buffer, IntPtr meta, IntPtr user_data);
internal class BufferForeachMetaFuncInvoker {
BufferForeachMetaFuncNative native_cb;
IntPtr __data;
GLib.DestroyNotify __notify;
~BufferForeachMetaFuncInvoker ()
{
if (__notify == null)
return;
__notify (__data);
}
internal BufferForeachMetaFuncInvoker (BufferForeachMetaFuncNative native_cb) : this (native_cb, IntPtr.Zero, null) {}
internal BufferForeachMetaFuncInvoker (BufferForeachMetaFuncNative native_cb, IntPtr data) : this (native_cb, data, null) {}
internal BufferForeachMetaFuncInvoker (BufferForeachMetaFuncNative native_cb, IntPtr data, GLib.DestroyNotify notify)
{
this.native_cb = native_cb;
__data = data;
__notify = notify;
}
internal Gst.BufferForeachMetaFunc Handler {
get {
return new Gst.BufferForeachMetaFunc(InvokeNative);
}
}
bool InvokeNative (Gst.Buffer buffer, out Gst.Meta meta)
{
IntPtr native_meta = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (Gst.Meta)));
bool __result = native_cb (buffer == null ? IntPtr.Zero : buffer.Handle, native_meta, __data);
meta = Gst.Meta.New (native_meta);
Marshal.FreeHGlobal (native_meta);
return __result;
}
}
internal class BufferForeachMetaFuncWrapper {
public bool NativeCallback (IntPtr buffer, IntPtr meta, IntPtr user_data)
{
try {
Gst.Meta mymeta;
bool __ret = managed (buffer == IntPtr.Zero ? null : (Gst.Buffer) GLib.Opaque.GetOpaque (buffer, typeof (Gst.Buffer), false), out mymeta);
if (meta != IntPtr.Zero) System.Runtime.InteropServices.Marshal.StructureToPtr (mymeta, meta, false);
if (release_on_call)
gch.Free ();
return __ret;
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException (e, true);
// NOTREACHED: Above call does not return.
throw e;
}
}
bool release_on_call = false;
GCHandle gch;
public void PersistUntilCalled ()
{
release_on_call = true;
gch = GCHandle.Alloc (this);
}
internal BufferForeachMetaFuncNative NativeDelegate;
Gst.BufferForeachMetaFunc managed;
public BufferForeachMetaFuncWrapper (Gst.BufferForeachMetaFunc managed)
{
this.managed = managed;
if (managed != null)
NativeDelegate = new BufferForeachMetaFuncNative (NativeCallback);
}
public static Gst.BufferForeachMetaFunc GetManagedDelegate (BufferForeachMetaFuncNative native)
{
if (native == null)
return null;
BufferForeachMetaFuncWrapper wrapper = (BufferForeachMetaFuncWrapper) native.Target;
if (wrapper == null)
return null;
return wrapper.managed;
}
}
#endregion
}