gstreamer/subprojects/gstreamer-sharp/sources/generated/Gst/GstSharp.MetaFreeFunctionNative.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 void MetaFreeFunctionNative(IntPtr meta, IntPtr buffer);
internal class MetaFreeFunctionInvoker {
MetaFreeFunctionNative native_cb;
IntPtr __data;
GLib.DestroyNotify __notify;
~MetaFreeFunctionInvoker ()
{
if (__notify == null)
return;
__notify (__data);
}
internal MetaFreeFunctionInvoker (MetaFreeFunctionNative native_cb) : this (native_cb, IntPtr.Zero, null) {}
internal MetaFreeFunctionInvoker (MetaFreeFunctionNative native_cb, IntPtr data) : this (native_cb, data, null) {}
internal MetaFreeFunctionInvoker (MetaFreeFunctionNative native_cb, IntPtr data, GLib.DestroyNotify notify)
{
this.native_cb = native_cb;
__data = data;
__notify = notify;
}
internal Gst.MetaFreeFunction Handler {
get {
return new Gst.MetaFreeFunction(InvokeNative);
}
}
void InvokeNative (Gst.Meta meta, Gst.Buffer buffer)
{
IntPtr native_meta = GLib.Marshaller.StructureToPtrAlloc (meta);
native_cb (native_meta, buffer == null ? IntPtr.Zero : buffer.Handle);
Marshal.FreeHGlobal (native_meta);
}
}
internal class MetaFreeFunctionWrapper {
public void NativeCallback (IntPtr meta, IntPtr buffer)
{
try {
managed (Gst.Meta.New (meta), buffer == IntPtr.Zero ? null : (Gst.Buffer) GLib.Opaque.GetOpaque (buffer, typeof (Gst.Buffer), false));
if (release_on_call)
gch.Free ();
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException (e, false);
}
}
bool release_on_call = false;
GCHandle gch;
public void PersistUntilCalled ()
{
release_on_call = true;
gch = GCHandle.Alloc (this);
}
internal MetaFreeFunctionNative NativeDelegate;
Gst.MetaFreeFunction managed;
public MetaFreeFunctionWrapper (Gst.MetaFreeFunction managed)
{
this.managed = managed;
if (managed != null)
NativeDelegate = new MetaFreeFunctionNative (NativeCallback);
}
public static Gst.MetaFreeFunction GetManagedDelegate (MetaFreeFunctionNative native)
{
if (native == null)
return null;
MetaFreeFunctionWrapper wrapper = (MetaFreeFunctionWrapper) native.Target;
if (wrapper == null)
return null;
return wrapper.managed;
}
}
#endregion
}