Combine GStreamer GTK4 plugin with API

Ship custom gtk4glsink plugin as part of API insead of normal gstreamer plugin. This avoids gstreamer plugin registry conflicts with gtk3 plugin and allows more customization.
2025-08-31 16:31:58 +02:00 · 2021-01-29 17:27:39 +01:00
parent 4ad2b707dd
commit 2ce44d4e63
17 changed files with 2964 additions and 30 deletions
--- a/lib/gst/clapper/gstclapper-gtk4-plugin.c
+++ b/lib/gst/clapper/gstclapper-gtk4-plugin.c
@@ -0,0 +1,145 @@
+/* GStreamer
+ *
+ * Copyright (C) 2021 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstclapper-gtk4plugin
+ * @title: GstClapperGtk4Plugin
+ * @short_description: Clapper GTK4 plugin
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclapper-gtk4-plugin.h"
+#include "gtk4/gstgtkglsink.h"
+
+enum
+{
+  PROP_0,
+  PROP_VIDEO_SINK,
+  PROP_LAST
+};
+
+#define parent_class gst_clapper_gtk4_plugin_parent_class
+G_DEFINE_TYPE_WITH_CODE (GstClapperGtk4Plugin, gst_clapper_gtk4_plugin,
+    G_TYPE_OBJECT, NULL);
+
+static GParamSpec *param_specs[PROP_LAST] = { NULL, };
+
+static void gst_clapper_gtk4_plugin_constructed (GObject * object);
+static void gst_clapper_gtk4_plugin_finalize (GObject * object);
+static void gst_clapper_gtk4_plugin_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void gst_clapper_gtk4_plugin_init
+    (G_GNUC_UNUSED GstClapperGtk4Plugin * self)
+{
+}
+
+static void gst_clapper_gtk4_plugin_class_init
+    (G_GNUC_UNUSED GstClapperGtk4PluginClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+
+  gobject_class->constructed = gst_clapper_gtk4_plugin_constructed;
+  gobject_class->get_property = gst_clapper_gtk4_plugin_get_property;
+  gobject_class->finalize = gst_clapper_gtk4_plugin_finalize;
+
+  param_specs[PROP_VIDEO_SINK] =
+      g_param_spec_object ("video-sink",
+      "Video Sink", "Video sink to use with video renderer",
+      GST_TYPE_ELEMENT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (gobject_class, PROP_LAST, param_specs);
+}
+
+static void
+gst_clapper_gtk4_plugin_constructed (GObject * object)
+{
+  GstClapperGtk4Plugin *self = GST_CLAPPER_GTK4_PLUGIN (object);
+
+  if (!self->video_sink)
+    self->video_sink = g_object_new (GST_TYPE_GTK_GL_SINK, NULL);
+
+  gst_object_ref_sink (self->video_sink);
+
+  G_OBJECT_CLASS (parent_class)->constructed (object);
+}
+
+static void
+gst_clapper_gtk4_plugin_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstClapperGtk4Plugin *self = GST_CLAPPER_GTK4_PLUGIN (object);
+
+  switch (prop_id) {
+    case PROP_VIDEO_SINK:
+      g_value_set_object (value, self->video_sink);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_clapper_gtk4_plugin_finalize (GObject * object)
+{
+  GstClapperGtk4Plugin *self = GST_CLAPPER_GTK4_PLUGIN (object);
+
+  gst_object_unref (self->video_sink);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+#define C_ENUM(v) ((gint) v)
+
+GType
+gst_clapper_gtk4_plugin_type_get_type (void)
+{
+  static gsize id = 0;
+  static const GEnumValue values[] = {
+    {C_ENUM (GST_CLAPPER_GTK4_PLUGIN_TYPE_GLAREA), "GST_CLAPPER_GTK4_PLUGIN_TYPE_GLAREA", "glarea"},
+    {0, NULL, NULL}
+  };
+
+  if (g_once_init_enter (&id)) {
+    GType tmp = g_enum_register_static ("GstClapperGtk4PluginType", values);
+    g_once_init_leave (&id, tmp);
+  }
+
+  return (GType) id;
+}
+
+/**
+ * gst_clapper_gtk4_plugin_new:
+ * @plugin_type: (allow-none): Requested GstClapperGtk4PluginType
+ *
+ * Creates a new GTK4 plugin.
+ *
+ * Returns: (transfer full): the new GstClapperGtk4Plugin
+ */
+GstClapperGtk4Plugin *
+gst_clapper_gtk4_plugin_new (G_GNUC_UNUSED const GstClapperGtk4PluginType plugin_type)
+{
+  return g_object_new (GST_TYPE_CLAPPER_GTK4_PLUGIN, NULL);
+}