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38a3af96d0
Apparently GtkSharp expects each object has only one ToggleRef at any time. Assigning element.Handle into Raw has a consequence that second ToggleRef attempts to get created but fails on g_object_unref () that breaks a GObject assertion: toggle_refs_notify: assertion failed: (tstack.n_toggle_refs == 1) This is because toggle references should be removed with g_object_remove_toggle_ref(), not a simple unref(). In order to avoid duplicate toggle references, introduce ElementFactory.MakeRaw(), which creates a GstElement without its accompanying C# object. The returned raw pointer can be assigned into another GLib.Object without trouble. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1885>
42 lines
1.4 KiB
C#
42 lines
1.4 KiB
C#
//
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// ElementFactory.cs
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//
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// Authors:
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// Jakub Adam <jakub.adam@collabora.com>
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//
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// Copyright (C) 2020 Collabora Ltd.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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// 02110-1301 USA
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namespace Gst
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{
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using System;
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using System.Runtime.InteropServices;
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public partial class ElementFactory
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{
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public static IntPtr MakeRaw(string factoryname, string name)
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{
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IntPtr native_factoryname = GLib.Marshaller.StringToPtrGStrdup(factoryname);
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IntPtr native_name = GLib.Marshaller.StringToPtrGStrdup(name);
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IntPtr raw_ret = gst_element_factory_make(native_factoryname, native_name);
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GLib.Marshaller.Free(native_factoryname);
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GLib.Marshaller.Free(native_name);
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return raw_ret;
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}
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}
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}
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