3dvideo: Add simple gtk example stereoscopic video player

https://bugzilla.gnome.org/show_bug.cgi?id=611157

7 files changed, 1047 insertions, 1 deletions

diff --git a/tests/examples/gl/gtk/3dvideo/.gitignore b/tests/examples/gl/gtk/3dvideo/.gitignore
new file mode 100644
index 000000000..7c46573b5
--- /dev/null
+++ b/tests/examples/gl/gtk/3dvideo/.gitignore
@@ -0,0 +1 @@
+3dvideo
diff --git a/tests/examples/gl/gtk/3dvideo/3dvideo.vcproj b/tests/examples/gl/gtk/3dvideo/3dvideo.vcproj
new file mode 100644
index 000000000..bc0299a8b
--- /dev/null
+++ b/tests/examples/gl/gtk/3dvideo/3dvideo.vcproj
@@ -0,0 +1,210 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="9,00"
+	Name="3dvideo"
+	ProjectGUID="{E83070C2-58E4-48AE-AEB3-A4580EDE1212}"
+	RootNamespace="filtervideooverlay"
+	Keyword="Win32Proj"
+	TargetFrameworkVersion="131072"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="1"
+			CharacterSet="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				AdditionalIncludeDirectories="&quot;C:\gstreamer\include\glib-2.0&quot;;&quot;C:\gstreamer\lib\glib-2.0\include&quot;;&quot;..\..\..\..\..\gtk+\include\gtk-2.0&quot;;&quot;..\..\..\..\..\gtk+\lib\gtk-2.0\include&quot;;&quot;C:\gstreamer\include\gstreamer-1.0&quot;;C:\gstreamer\include\cairo;&quot;C:\gstreamer\include\pango-1.0&quot;;&quot;..\..\..\..\..\atk\include\atk-1.0&quot;;C:\gstreamer\include\libxml2;C:\gstreamer\include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="false"
+				DebugInformationFormat="4"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="gstreamer-1.0.lib glib-2.0.lib gmodule-2.0.lib gobject-2.0.lib gthread-2.0.lib gtk-win32-2.0.lib gdk-win32-2.0.lib"
+				LinkIncremental="2"
+				AdditionalLibraryDirectories="C:\gstreamer\lib;&quot;..\..\..\..\..\gtk+\lib&quot;"
+				GenerateDebugInformation="true"
+				SubSystem="1"
+				RandomizedBaseAddress="1"
+				DataExecutionPrevention="0"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="1"
+			CharacterSet="1"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				AdditionalIncludeDirectories="&quot;C:\gstreamer\include\glib-2.0&quot;;&quot;C:\gstreamer\lib\glib-2.0\include&quot;;&quot;..\..\..\..\..\gtk+\include\gtk-2.0&quot;;&quot;..\..\..\..\..\gtk+\lib\gtk-2.0\include&quot;;&quot;C:\gstreamer\include\gstreamer-1.0&quot;;C:\gstreamer\include\cairo;&quot;C:\gstreamer\include\pango-1.0&quot;;&quot;..\..\..\..\..\atk\include\atk-1.0&quot;;C:\gstreamer\include\libxml2;C:\gstreamer\include"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE"
+				RuntimeLibrary="2"
+				UsePrecompiledHeader="0"
+				WarningLevel="3"
+				Detect64BitPortabilityProblems="false"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalDependencies="gstreamer-1.0.lib glib-2.0.lib gmodule-2.0.lib gobject-2.0.lib gthread-2.0.lib gtk-win32-2.0.lib gdk-win32-2.0.lib"
+				LinkIncremental="1"
+				AdditionalLibraryDirectories="C:\gstreamer\lib;&quot;..\..\..\..\..\gtk+\lib&quot;"
+				GenerateDebugInformation="true"
+				SubSystem="1"
+				OptimizeReferences="2"
+				EnableCOMDATFolding="2"
+				RandomizedBaseAddress="1"
+				DataExecutionPrevention="0"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+			>
+			<File
+				RelativePath="..\gstgtk.c"
+				>
+			</File>
+			<File
+				RelativePath=".\main.cpp"
+				>
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl;inc;xsd"
+			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+			>
+			<File
+				RelativePath="..\gstgtk.h"
+				>
+			</File>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+			>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>
diff --git a/tests/examples/gl/gtk/3dvideo/Makefile.am b/tests/examples/gl/gtk/3dvideo/Makefile.am
new file mode 100644
index 000000000..94c8d1619
--- /dev/null
+++ b/tests/examples/gl/gtk/3dvideo/Makefile.am
@@ -0,0 +1,16 @@
+noinst_PROGRAMS = 3dvideo
+
+noinst_HEADERS = mviewwidget.h
+
+3dvideo_SOURCES = mviewwidget.c main.cpp
+
+3dvideo_CXXFLAGS=$(GST_CXXFLAGS)
+
+3dvideo_CPPFLAGS=-I$(top_srcdir)/gst-libs -I$(top_builddir)/gst-libs \
+	$(GST_PLUGINS_BASE_CFLAGS) \
+	$(GL_CFLAGS) $(GTK3_CFLAGS)
+3dvideo_LDADD=../libgstgtkhelper.la \
+	$(top_builddir)/gst-libs/gst/gl/libgstgl-$(GST_API_VERSION).la \
+	$(GTK3_LIBS) $(GST_PLUGINS_BASE_LIBS) $(GST_LIBS) \
+	$(GL_LIBS) -lgstvideo-$(GST_API_VERSION)
+
diff --git a/tests/examples/gl/gtk/3dvideo/main.cpp b/tests/examples/gl/gtk/3dvideo/main.cpp
new file mode 100644
index 000000000..1d8e5b724
--- /dev/null
+++ b/tests/examples/gl/gtk/3dvideo/main.cpp
@@ -0,0 +1,417 @@
+/*
+ * GStreamer
+ * Copyright (C) 2008-2009 Julien Isorce <julien.isorce@gmail.com>
+ * Copyright (C) 2014-2015 Jan Schmidt <jan@centricular.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.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+#include <X11/Xlib.h>
+
+#include <gst/gst.h>
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+#include <gst/video/video-info.h>
+
+#include "../gstgtk.h"
+#include "mviewwidget.h"
+
+/* Until playbin properties support dynamic changes,
+ * use our own glviewconvert */
+#define USE_GLCONVERT_FOR_INPUT 1
+
+typedef struct _localstate
+{
+  GstVideoMultiviewFramePacking in_mode;
+  GstVideoMultiviewFlags out_mode;
+  GstVideoMultiviewFlags in_flags, out_flags;
+} LocalState;
+
+static GstBusSyncReply
+create_window (GstBus * bus, GstMessage * message, GtkWidget * widget)
+{
+  /* ignore anything but 'prepare-window-handle' element messages */
+  if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
+    return GST_BUS_PASS;
+
+  if (!gst_is_video_overlay_prepare_window_handle_message (message))
+    return GST_BUS_PASS;
+
+  /* do not call gdk_window_ensure_native for the first time here because
+   * we are in a different thread than the main thread */
+  gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC
+          (message)), widget);
+
+  gst_message_unref (message);
+
+  return GST_BUS_DROP;
+}
+
+static void
+end_stream_cb (GstBus * bus, GstMessage * message, GstElement * pipeline)
+{
+  switch (GST_MESSAGE_TYPE (message)) {
+    case GST_MESSAGE_EOS:
+      g_print ("End of stream\n");
+
+      gst_element_set_state (pipeline, GST_STATE_NULL);
+      gst_object_unref (pipeline);
+      gtk_main_quit ();
+      break;
+    case GST_MESSAGE_ERROR:
+    {
+      gchar *debug = NULL;
+      GError *err = NULL;
+
+      gst_message_parse_error (message, &err, &debug);
+
+      g_print ("Error: %s\n", err->message);
+      g_error_free (err);
+
+      if (debug) {
+        g_print ("Debug details: %s\n", debug);
+        g_free (debug);
+      }
+
+      gst_element_set_state (pipeline, GST_STATE_NULL);
+      gst_object_unref (pipeline);
+      gtk_main_quit ();
+      break;
+    }
+    default:
+      break;
+  }
+}
+
+static gboolean
+draw_cb (GtkWidget * widget, cairo_t * cr, GstElement * videosink)
+{
+  gst_video_overlay_expose (GST_VIDEO_OVERLAY (videosink));
+  return FALSE;
+}
+
+static void
+destroy_cb (GtkWidget * widget, GdkEvent * event, GstElement * pipeline)
+{
+  gst_element_set_state (pipeline, GST_STATE_NULL);
+  gst_object_unref (pipeline);
+
+  gtk_main_quit ();
+}
+
+static void
+button_state_ready_cb (GtkWidget * widget, GstElement * pipeline)
+{
+  gst_element_set_state (pipeline, GST_STATE_READY);
+}
+
+static void
+button_state_paused_cb (GtkWidget * widget, GstElement * pipeline)
+{
+  gst_element_set_state (pipeline, GST_STATE_PAUSED);
+}
+
+static void
+button_state_playing_cb (GtkWidget * widget, GstElement * pipeline)
+{
+  gst_element_set_state (pipeline, GST_STATE_PLAYING);
+}
+
+static gboolean
+set_mview_mode (GtkWidget * combo, GObject * target, const gchar * prop_name)
+{
+  gchar *mview_mode = NULL;
+  GEnumClass *p_class;
+  GEnumValue *v;
+  GParamSpec *p =
+      g_object_class_find_property (G_OBJECT_GET_CLASS (target), prop_name);
+
+  g_return_val_if_fail (p != NULL, FALSE);
+
+  p_class = G_PARAM_SPEC_ENUM (p)->enum_class;
+  g_return_val_if_fail (p_class != NULL, FALSE);
+
+  g_object_get (G_OBJECT (combo), "active-id", &mview_mode, NULL);
+  g_return_val_if_fail (mview_mode != NULL, FALSE);
+
+  v = g_enum_get_value_by_nick (p_class, mview_mode);
+  g_return_val_if_fail (v != NULL, FALSE);
+
+  g_object_set (target, prop_name, v->value, NULL);
+
+  return FALSE;
+}
+
+static gboolean
+set_mview_input_mode (GtkWidget * widget, gpointer data)
+{
+#if USE_GLCONVERT_FOR_INPUT
+  return set_mview_mode (widget, G_OBJECT (data), "input-mode-override");
+#else
+  return set_mview_mode (widget, G_OBJECT (data), "video-multiview-mode");
+#endif
+}
+
+static gboolean
+set_mview_output_mode (GtkWidget * widget, gpointer data)
+{
+  GstElement *sink = gst_bin_get_by_name (GST_BIN (data), "sink");
+  set_mview_mode (widget, G_OBJECT (sink), "output-multiview-mode");
+  gst_object_unref (GST_OBJECT (sink));
+  return FALSE;
+}
+
+static void
+input_flags_changed (GObject * gobject, GParamSpec * pspec, gpointer user_data)
+{
+  GObject *target = G_OBJECT (user_data);
+  GstVideoMultiviewFlags flags;
+
+  g_object_get (gobject, "flags", &flags, NULL);
+#if USE_GLCONVERT_FOR_INPUT
+  g_object_set (target, "input-flags-override", flags, NULL);
+#else
+  g_object_set (target, "video-multiview-flags", flags, NULL);
+#endif
+}
+
+static void
+output_flags_changed (GObject * gobject, GParamSpec * pspec, gpointer user_data)
+{
+  GObject *target = G_OBJECT (user_data);
+  GstVideoMultiviewFlags flags;
+  GstElement *sink = gst_bin_get_by_name (GST_BIN (target), "sink");
+
+  g_object_get (gobject, "flags", &flags, NULL);
+  g_object_set (G_OBJECT (sink), "output-multiview-flags", flags, NULL);
+
+  gst_object_unref (GST_OBJECT (sink));
+}
+
+static void
+downmix_method_changed (GObject * gobject, GParamSpec * pspec, gpointer user_data)
+{
+  GObject *target = G_OBJECT (user_data);
+  GstGLStereoDownmix downmix_method;
+  GstElement *sink = gst_bin_get_by_name (GST_BIN (target), "sink");
+
+  g_object_get (gobject, "downmix-mode", &downmix_method, NULL);
+  g_object_set (sink, "output-multiview-downmix-mode", downmix_method, NULL);
+  gst_object_unref (GST_OBJECT (sink));
+}
+
+static const gchar *
+enum_value_to_nick (GType enum_type, guint value)
+{
+  GEnumClass *enum_info;
+  GEnumValue *v;
+  const gchar *nick;
+
+  enum_info = (GEnumClass *) (g_type_class_ref (enum_type));
+  g_return_val_if_fail (enum_info != NULL, NULL);
+
+  v = g_enum_get_value (enum_info, value);
+  g_return_val_if_fail (v != NULL, NULL);
+
+  nick = v->value_nick;
+
+  g_type_class_unref (enum_info);
+
+  return nick;
+}
+
+static void
+detect_mode_from_uri (LocalState * state, const gchar * uri)
+{
+  if (strstr (uri, "HSBS")) {
+    state->in_mode = GST_VIDEO_MULTIVIEW_FRAME_PACKING_SIDE_BY_SIDE;
+    state->in_flags = GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT;
+  } else if (strstr (uri, "SBS")) {
+    state->in_mode = GST_VIDEO_MULTIVIEW_FRAME_PACKING_SIDE_BY_SIDE;
+    if (g_regex_match_simple ("half", uri, G_REGEX_CASELESS,
+            (GRegexMatchFlags) 0)) {
+      state->in_flags = GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT;
+    }
+  }
+}
+
+gint
+main (gint argc, gchar * argv[])
+{
+  LocalState state;
+  GtkWidget *area, *combo, *w;
+  const gchar *uri;
+
+  XInitThreads ();
+
+  gst_init (&argc, &argv);
+  gtk_init (&argc, &argv);
+
+  if (argc < 2) {
+    g_print ("Usage: 3dvideo <uri-to-play>\n");
+    return 1;
+  }
+
+  uri = argv[1];
+
+  GstElement *pipeline = gst_element_factory_make ("playbin", NULL);
+  GstBin *sinkbin = (GstBin *) gst_parse_bin_from_description ("glupload ! glcolorconvert ! glviewconvert name=viewconvert ! glimagesink name=sink", TRUE, NULL);
+#if USE_GLCONVERT_FOR_INPUT
+  GstElement *glconvert = gst_bin_get_by_name (sinkbin, "viewconvert");
+#endif
+  GstElement *videosink = gst_bin_get_by_name (sinkbin, "sink");
+
+  /* Get defaults */
+  g_object_get (pipeline, "video-multiview-mode", &state.in_mode,
+      "video-multiview-flags", &state.in_flags, NULL);
+  gst_child_proxy_get (GST_CHILD_PROXY (videosink), "sink::output-multiview-mode", &state.out_mode,
+      "sink::output-multiview-flags", &state.out_flags, NULL);
+
+  detect_mode_from_uri (&state, uri);
+
+  g_return_val_if_fail (pipeline != NULL, 1);
+  g_return_val_if_fail (videosink != NULL, 1);
+
+  g_object_set (G_OBJECT (pipeline), "video-sink", sinkbin, NULL);
+  g_object_set (G_OBJECT (pipeline), "uri", uri, NULL);
+
+#if USE_GLCONVERT_FOR_INPUT
+  g_object_set (G_OBJECT (glconvert), "input-mode-override", state.in_mode,
+      NULL);
+  g_object_set (G_OBJECT (glconvert), "input-flags-override", state.in_flags,
+      NULL);
+#else
+  g_object_set (G_OBJECT (pipeline), "video-multiview-mode", state.in_mode,
+      NULL);
+  g_object_set (G_OBJECT (pipeline), "video-multiview-flags", state.in_flags,
+      NULL);
+#endif
+
+  /* Connect to bus for signal handling */
+  GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
+  gst_bus_add_signal_watch (bus);
+  g_signal_connect (bus, "message::error", G_CALLBACK (end_stream_cb),
+      pipeline);
+  g_signal_connect (bus, "message::warning", G_CALLBACK (end_stream_cb),
+      pipeline);
+  g_signal_connect (bus, "message::eos", G_CALLBACK (end_stream_cb), pipeline);
+
+  gst_element_set_state (pipeline, GST_STATE_READY);
+
+  area = gtk_drawing_area_new ();
+  gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, area, NULL);
+  gst_object_unref (bus);
+
+  /* Toplevel window */
+  GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_default_size (GTK_WINDOW (window), 800, 600);
+  gtk_window_set_title (GTK_WINDOW (window), "Stereoscopic video demo");
+  GdkGeometry geometry;
+  geometry.min_width = 1;
+  geometry.min_height = 1;
+  geometry.max_width = -1;
+  geometry.max_height = -1;
+  gtk_window_set_geometry_hints (GTK_WINDOW (window), window, &geometry,
+      GDK_HINT_MIN_SIZE);
+
+  GtkWidget *vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+
+  /* area where the video is drawn */
+  gtk_box_pack_start (GTK_BOX (vbox), area, TRUE, TRUE, 0);
+
+  /* Buttons to control the pipeline state */
+  GtkWidget *table = gtk_grid_new ();
+  gtk_container_add (GTK_CONTAINER (vbox), table);
+
+  GtkWidget *button_state_ready = gtk_button_new_with_label ("Stop");
+  g_signal_connect (G_OBJECT (button_state_ready), "clicked",
+      G_CALLBACK (button_state_ready_cb), pipeline);
+  gtk_grid_attach (GTK_GRID (table), button_state_ready, 1, 0, 1, 1);
+  gtk_widget_show (button_state_ready);
+
+  //control state paused
+  GtkWidget *button_state_paused = gtk_button_new_with_label ("Pause");
+  g_signal_connect (G_OBJECT (button_state_paused), "clicked",
+      G_CALLBACK (button_state_paused_cb), pipeline);
+  gtk_grid_attach (GTK_GRID (table), button_state_paused, 2, 0, 1, 1);
+  gtk_widget_show (button_state_paused);
+
+  //control state playing
+  GtkWidget *button_state_playing = gtk_button_new_with_label ("Play");
+  g_signal_connect (G_OBJECT (button_state_playing), "clicked",
+      G_CALLBACK (button_state_playing_cb), pipeline);
+  gtk_grid_attach (GTK_GRID (table), button_state_playing, 3, 0, 1, 1);
+  //gtk_widget_show (button_state_playing);
+
+  w = gst_mview_widget_new (FALSE);
+  combo = GST_MVIEW_WIDGET (w)->mode_selector;
+  gtk_combo_box_set_active_id (GTK_COMBO_BOX (combo),
+      enum_value_to_nick (GST_TYPE_VIDEO_MULTIVIEW_FRAME_PACKING,
+          state.in_mode));
+#if USE_GLCONVERT_FOR_INPUT
+  g_signal_connect (G_OBJECT (combo), "changed",
+      G_CALLBACK (set_mview_input_mode), glconvert);
+#else
+  g_signal_connect (G_OBJECT (combo), "changed",
+      G_CALLBACK (set_mview_input_mode), pipeline);
+#endif
+
+  g_object_set (G_OBJECT (w), "flags", state.in_flags, NULL);
+#if USE_GLCONVERT_FOR_INPUT
+  g_signal_connect (G_OBJECT (w), "notify::flags",
+      G_CALLBACK (input_flags_changed), glconvert);
+#else
+  g_signal_connect (G_OBJECT (w), "notify::flags",
+      G_CALLBACK (input_flags_changed), pipeline);
+#endif
+  gtk_container_add (GTK_CONTAINER (vbox), w);
+
+  w = gst_mview_widget_new (TRUE);
+  combo = GST_MVIEW_WIDGET (w)->mode_selector;
+  gtk_combo_box_set_active_id (GTK_COMBO_BOX (combo),
+      enum_value_to_nick (GST_TYPE_VIDEO_MULTIVIEW_MODE, state.out_mode));
+  g_signal_connect (G_OBJECT (combo), "changed",
+      G_CALLBACK (set_mview_output_mode), videosink);
+
+  g_object_set (G_OBJECT (w), "flags", state.out_flags, NULL);
+  g_signal_connect (G_OBJECT (w), "notify::flags",
+      G_CALLBACK (output_flags_changed), videosink);
+  g_signal_connect (G_OBJECT (w), "notify::downmix-mode",
+      G_CALLBACK (downmix_method_changed), videosink);
+  gtk_container_add (GTK_CONTAINER (vbox), w);
+
+  //configure the pipeline
+  g_signal_connect (G_OBJECT (window), "delete-event", G_CALLBACK (destroy_cb),
+      pipeline);
+
+  gtk_widget_realize (area);
+
+  /* Redraw needed when paused or stopped (PAUSED or READY) */
+  g_signal_connect (area, "draw", G_CALLBACK (draw_cb), videosink);
+
+  gtk_widget_show_all (window);
+
+  gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+  gtk_main ();
+
+  return 0;
+}
diff --git a/tests/examples/gl/gtk/3dvideo/mviewwidget.c b/tests/examples/gl/gtk/3dvideo/mviewwidget.c
new file mode 100644
index 000000000..b74409c13
--- /dev/null
+++ b/tests/examples/gl/gtk/3dvideo/mviewwidget.c
@@ -0,0 +1,324 @@
+/*
+ * GStreamer
+ * Copyright (C) 2014-2015 Jan Schmidt <jan@centricular.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.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "mviewwidget.h"
+
+G_DEFINE_TYPE (GstMViewWidget, gst_mview_widget, GTK_TYPE_GRID);
+
+static void gst_mview_widget_constructed (GObject * o);
+static void gst_mview_widget_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_mview_widget_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec);
+
+#define DEFAULT_DOWNMIX GST_GL_STEREO_DOWNMIX_ANAGLYPH_GREEN_MAGENTA_DUBOIS
+
+enum
+{
+  PROP_0,
+  PROP_IS_OUTPUT,
+  PROP_MODE_SELECTOR,
+  PROP_FLAGS,
+  PROP_DOWNMIX_MODE
+};
+
+typedef struct _ToggleClosure
+{
+  GstMViewWidget *mv;
+  GstVideoMultiviewFlags flag;
+} ToggleClosure;
+
+static GtkWidget *combo_box_from_enum (GType enum_type);
+
+static void
+gst_mview_widget_class_init (GstMViewWidgetClass * klass)
+{
+  GObjectClass *object_klass = (GObjectClass *) (klass);
+
+  object_klass->constructed = gst_mview_widget_constructed;
+  object_klass->set_property = gst_mview_widget_set_property;
+  object_klass->get_property = gst_mview_widget_get_property;
+
+  g_object_class_install_property (object_klass, PROP_IS_OUTPUT,
+      g_param_spec_boolean ("is-output", "Is an Output widget",
+          "TRUE if the widget should have downmix mode", FALSE,
+          G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (object_klass, PROP_MODE_SELECTOR,
+      g_param_spec_object ("mode-selector", "Multiview Mode selector",
+          "Multiview Mode selector widget",
+          GTK_TYPE_WIDGET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_klass, PROP_FLAGS,
+      g_param_spec_flags ("flags", "Multiview Flags",
+          "multiview flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGS,
+          GST_VIDEO_MULTIVIEW_FLAGS_NONE,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (object_klass, PROP_DOWNMIX_MODE,
+      g_param_spec_enum ("downmix-mode",
+          "Mode for mono downmixed output",
+          "Output anaglyph type to generate when downmixing to mono",
+          GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE, DEFAULT_DOWNMIX,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+}
+
+static void
+gst_mview_widget_init (GstMViewWidget * mv)
+{
+}
+
+static void
+flag_changed (GObject * w, ToggleClosure * c)
+{
+  GstMViewWidget *mv = GST_MVIEW_WIDGET (c->mv);
+  gboolean flag_set;
+
+  g_object_get (w, "active", &flag_set, NULL);
+
+  if (flag_set)
+    mv->flags |= c->flag;
+  else
+    mv->flags &= ~(c->flag);
+  if (!mv->synching)
+    g_object_notify (G_OBJECT (mv), "flags");
+}
+
+static void
+link_button_to_flag (GstMViewWidget * mv, GtkWidget * w,
+    GstVideoMultiviewFlags flag)
+{
+  ToggleClosure *c = g_new0 (ToggleClosure, 1);
+
+  c->mv = mv;
+  c->flag = flag;
+
+  g_signal_connect_data (G_OBJECT (w), "toggled", G_CALLBACK (flag_changed),
+      c, (GClosureNotify) g_free, 0);
+}
+
+static void
+sync_flags (GstMViewWidget * mv)
+{
+  mv->synching = TRUE;
+  g_object_set (G_OBJECT (mv->lflip), "active",
+      ! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED), NULL);
+  g_object_set (G_OBJECT (mv->lflop), "active",
+      ! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED), NULL);
+  g_object_set (G_OBJECT (mv->rflip), "active",
+      ! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED), NULL);
+  g_object_set (G_OBJECT (mv->rflop), "active",
+      ! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED), NULL);
+  g_object_set (G_OBJECT (mv->right_first), "active",
+      ! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST), NULL);
+  g_object_set (G_OBJECT (mv->half_aspect), "active",
+      ! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT), NULL);
+  mv->synching = FALSE;
+}
+
+static const gchar *
+enum_value_to_nick (GType enum_type, guint value)
+{
+  GEnumClass *enum_info;
+  GEnumValue *v;
+  const gchar *nick;
+
+  enum_info = (GEnumClass *) (g_type_class_ref (enum_type));
+  g_return_val_if_fail (enum_info != NULL, NULL);
+
+  v = g_enum_get_value (enum_info, value);
+  g_return_val_if_fail (v != NULL, NULL);
+
+  nick = v->value_nick;
+
+  g_type_class_unref (enum_info);
+
+  return nick;
+}
+
+static void
+sync_downmix (GstMViewWidget * mv)
+{
+  mv->synching = TRUE;
+  gtk_combo_box_set_active_id (GTK_COMBO_BOX (mv->downmix_combo),
+      enum_value_to_nick (GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE,
+          mv->downmix_mode));
+  mv->synching = FALSE;
+}
+
+static gboolean
+set_downmix_mode (GtkWidget * widget, gpointer data)
+{
+  GstMViewWidget *mv = GST_MVIEW_WIDGET (data);
+  gchar *downmix_mode = NULL;
+  GEnumClass *p_class;
+  GEnumValue *v;
+  GParamSpec *p =
+      g_object_class_find_property (G_OBJECT_GET_CLASS (mv), "downmix-mode");
+
+  g_return_val_if_fail (p != NULL, FALSE);
+
+  p_class = G_PARAM_SPEC_ENUM (p)->enum_class;
+  g_return_val_if_fail (p_class != NULL, FALSE);
+
+  g_object_get (G_OBJECT (widget), "active-id", &downmix_mode, NULL);
+  g_return_val_if_fail (downmix_mode != NULL, FALSE);
+
+  v = g_enum_get_value_by_nick (p_class, downmix_mode);
+  g_return_val_if_fail (v != NULL, FALSE);
+
+  mv->downmix_mode = v->value;
+  if (!mv->synching)
+    g_object_notify (G_OBJECT (mv), "downmix-mode");
+
+  return FALSE;
+}
+
+static void
+gst_mview_widget_constructed (GObject * o)
+{
+  GstMViewWidget *mv = GST_MVIEW_WIDGET (o);
+  GtkGrid *g = GTK_GRID (mv);
+  GtkWidget *w;
+
+  gtk_widget_set_has_window (GTK_WIDGET (mv), FALSE);
+
+  if (mv->is_output) {
+    mv->mode_selector = w = combo_box_from_enum (GST_TYPE_VIDEO_MULTIVIEW_MODE);
+    gtk_grid_attach (g, gtk_label_new ("Output:"), 0, 0, 1, 1);
+  } else {
+    mv->mode_selector = w =
+        combo_box_from_enum (GST_TYPE_VIDEO_MULTIVIEW_FRAME_PACKING);
+    gtk_grid_attach (g, gtk_label_new ("Input:"), 0, 0, 1, 1);
+  }
+  gtk_grid_attach (g, mv->mode_selector, 1, 0, 3, 1);
+
+  gtk_grid_attach (g, gtk_label_new (" Left "), 4, 0, 1, 1);
+  mv->lflip = w = gtk_toggle_button_new_with_label ("Flip");
+  link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED);
+  gtk_grid_attach (g, w, 5, 0, 1, 1);
+  mv->lflop = w = gtk_toggle_button_new_with_label ("Flop");
+  link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED);
+  gtk_grid_attach (g, w, 6, 0, 1, 1);
+
+  gtk_grid_attach (g, gtk_label_new (" Right "), 4, 1, 1, 1);
+  mv->rflip = w = gtk_toggle_button_new_with_label ("Flip");
+  link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED);
+  gtk_grid_attach (g, w, 5, 1, 1, 1);
+  mv->rflop = w = gtk_toggle_button_new_with_label ("Flop");
+  link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED);
+  gtk_grid_attach (g, w, 6, 1, 1, 1);
+
+  mv->right_first = w = gtk_toggle_button_new_with_label ("Left/Right swap");
+  link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST);
+  gtk_grid_attach (g, w, 1, 1, 1, 1);
+  mv->half_aspect = w = gtk_toggle_button_new_with_label ("Half-Aspect");
+  link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT);
+  gtk_grid_attach (g, w, 2, 1, 1, 1);
+
+  if (mv->is_output) {
+    mv->downmix_combo = w =
+        combo_box_from_enum (GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE);
+    gtk_grid_attach (g, w, 1, 2, 3, 1);
+    sync_downmix (mv);
+    g_signal_connect (G_OBJECT (w), "changed",
+        G_CALLBACK (set_downmix_mode), mv);
+  }
+}
+
+static void
+gst_mview_widget_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstMViewWidget *mv = GST_MVIEW_WIDGET (object);
+  switch (prop_id) {
+    case PROP_IS_OUTPUT:
+      mv->is_output = g_value_get_boolean (value);
+      break;
+    case PROP_FLAGS:
+      mv->flags = (GstVideoMultiviewFlags) g_value_get_flags (value);
+      sync_flags (mv);
+      break;
+    case PROP_DOWNMIX_MODE:
+      mv->downmix_mode = g_value_get_enum (value);
+      sync_downmix (mv);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_mview_widget_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstMViewWidget *mv = GST_MVIEW_WIDGET (object);
+  switch (prop_id) {
+    case PROP_IS_OUTPUT:
+      g_value_set_boolean (value, mv->is_output);
+      break;
+    case PROP_MODE_SELECTOR:
+      g_value_set_object (value, mv->mode_selector);
+      break;
+    case PROP_FLAGS:
+      g_value_set_flags (value, mv->flags);
+      break;
+    case PROP_DOWNMIX_MODE:
+      g_value_set_enum (value, mv->downmix_mode);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GtkWidget *
+combo_box_from_enum (GType enum_type)
+{
+  GEnumClass *enum_info;
+  GtkWidget *combo;
+  guint i;
+
+  enum_info = (GEnumClass *) (g_type_class_ref (enum_type));
+  g_return_val_if_fail (enum_info != NULL, NULL);
+
+  combo = gtk_combo_box_text_new ();
+  for (i = 0; i < enum_info->n_values; i++) {
+    GEnumValue *v = enum_info->values + i;
+    gtk_combo_box_text_insert (GTK_COMBO_BOX_TEXT (combo),
+        i, v->value_nick, v->value_name);
+  }
+
+  g_type_class_unref (enum_info);
+
+  return combo;
+}
+
+GtkWidget *
+gst_mview_widget_new (gboolean is_output)
+{
+  GtkWidget *ret;
+
+  ret = g_object_new (GST_TYPE_MVIEW_WIDGET, "is-output", is_output, NULL);
+
+  return ret;
+}
diff --git a/tests/examples/gl/gtk/3dvideo/mviewwidget.h b/tests/examples/gl/gtk/3dvideo/mviewwidget.h
new file mode 100644
index 000000000..b63d7a944
--- /dev/null
+++ b/tests/examples/gl/gtk/3dvideo/mviewwidget.h
@@ -0,0 +1,78 @@
+/*
+ * GStreamer
+ * Copyright (C) 2014-2015 Jan Schmidt <jan@centricular.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.
+ */
+#include <string.h>
+
+#define GST_USE_UNSTABLE_API 1
+
+#include <gst/gst.h>
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+#include <gst/video/video-info.h>
+#include <gst/gl/gstglviewconvert.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_MVIEW_WIDGET (gst_mview_widget_get_type())
+#define GST_MVIEW_WIDGET(obj) \
+        (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MVIEW_WIDGET, GstMViewWidget))
+#define GST_MVIEW_WIDGET_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MVIEW_WIDGET, GstMViewWidgetClass))
+#define GST_IS_MVIEW_WIDGET(obj) \
+        (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MVIEW_WIDGET))
+#define GST_IS_MVIEW_WIDGET_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MVIEW_WIDGET))
+#define GST_MVIEW_WIDGET_GET_CLASS(obj) \
+        (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_MVIEW_WIDGET,GstMViewWidgetClass))
+
+typedef struct _GstMViewWidget GstMViewWidget;
+typedef struct _GstMViewWidgetClass GstMViewWidgetClass;
+
+struct _GstMViewWidget {
+  GtkGrid parent;
+
+  gboolean is_output;
+
+  GtkWidget *mode_selector;
+
+  GstVideoMultiviewMode mode;
+  GstVideoMultiviewFlags flags;
+  GstGLStereoDownmix downmix_mode;
+
+  /* Array of toggle buttons for flags */
+  GtkWidget *lflip;
+  GtkWidget *lflop;
+  GtkWidget *rflip;
+  GtkWidget *rflop;
+  GtkWidget *half_aspect;
+  GtkWidget *right_first;
+
+  GtkWidget *downmix_combo;
+
+  gboolean synching;
+};
+
+struct _GstMViewWidgetClass {
+  GtkGridClass parent;
+};
+
+GType gst_mview_widget_get_type ();
+GtkWidget *gst_mview_widget_new (gboolean is_output);
+
+G_END_DECLS
diff --git a/tests/examples/gl/gtk/Makefile.am b/tests/examples/gl/gtk/Makefile.am
index a41566bc0..3c1867926 100644
--- a/tests/examples/gl/gtk/Makefile.am
+++ b/tests/examples/gl/gtk/Makefile.am
@@ -1,5 +1,5 @@
 
-SUBDIRS = . gtkvideooverlay filternovideooverlay filtervideooverlay fxtest switchvideooverlay
+SUBDIRS = . gtkvideooverlay filternovideooverlay filtervideooverlay fxtest switchvideooverlay 3dvideo
 
 noinst_LTLIBRARIES = libgstgtkhelper.la