tests/examples: add a waylandsink example

https://bugzilla.gnome.org/show_bug.cgi?id=748322

.gitignore

@@ -65,6 +65,7 @@ gst*orc.h
 /tests/examples/opencv/gsthanddetect_test
 /tests/examples/opencv/gstfacedetect_test
 /tests/examples/playout
+/tests/examples/waylandsink/gtkwaylandsink
 
 Build
 *.user

configure.ac

@@ -3559,6 +3559,7 @@ tests/examples/mpegts/Makefile
 tests/examples/mxf/Makefile
 tests/examples/opencv/Makefile
 tests/examples/uvch264/Makefile
+tests/examples/waylandsink/Makefile
 tests/icles/Makefile
 ext/voamrwbenc/Makefile
 ext/voaacenc/Makefile

tests/examples/Makefile.am

@@ -40,6 +40,16 @@ else
 GTK3_DIR=
 endif
 
+if USE_WAYLAND
+if HAVE_GTK3
+WAYLAND_DIR=waylandsink
+else
+WAYLAND_DIR=
+endif
+else
+WAYLAND_DIR=
+endif
+
 noinst_PROGRAMS = playout
 
 playout_SOURCES = playout.c
@@ -47,7 +57,8 @@ playout_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
 playout_LDADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-$(GST_API_VERSION) $(GST_LIBS)
 
 SUBDIRS= codecparsers mpegts $(DIRECTFB_DIR) $(GTK_EXAMPLES) $(OPENCV_EXAMPLES) \
-        $(GL_DIR) $(GTK3_DIR) $(AVSAMPLE_DIR)
+        $(GL_DIR) $(GTK3_DIR) $(AVSAMPLE_DIR) $(WAYLAND_DIR)
-DIST_SUBDIRS= codecparsers mpegts camerabin2 directfb mxf opencv uvch264 gl gtk avsamplesink
+DIST_SUBDIRS= codecparsers mpegts camerabin2 directfb mxf opencv uvch264 gl gtk \
+        avsamplesink waylandsink
 
 include $(top_srcdir)/common/parallel-subdirs.mak

tests/examples/waylandsink/Makefile.am

@@ -0,0 +1,9 @@
+noinst_PROGRAMS = gtkwaylandsink
+
+gtkwaylandsink_SOURCES = main.c
+
+gtkwaylandsink_CFLAGS=-I$(top_srcdir)/gst-libs -I$(top_builddir)/gst-libs \
+	$(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(GTK3_CFLAGS)
+gtkwaylandsink_LDADD=$(GTK3_LIBS) $(GST_PLUGINS_BASE_LIBS) $(GST_LIBS) \
+	-lgstvideo-$(GST_API_VERSION) \
+	-L$(top_srcdir)/gst-libs/gst/wayland -lgstwayland-$(GST_API_VERSION)

tests/examples/waylandsink/main.c

@@ -0,0 +1,279 @@
+/*
+ * Copyright (C) 2014-2015 Collabora Ltd.
+ *   @author George Kiagiadakis <george.kiagiadakis@collabora.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 <gst/gst.h>
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+
+#ifdef GDK_WINDOWING_WAYLAND
+#include <gdk/gdkwayland.h>
+#else
+#error "Wayland is not supported in GTK+"
+#endif
+
+#include <gst/video/videooverlay.h>
+#include <gst/wayland/wayland.h>
+
+
+static gboolean live = FALSE;
+
+static GOptionEntry entries[] = {
+  {"live", 'l', 0, G_OPTION_ARG_NONE, &live, "Use a live source", NULL},
+  {NULL}
+};
+
+typedef struct
+{
+  GtkWidget *app_widget;
+  GtkWidget *video_widget;
+
+  GstElement *pipeline;
+  GstVideoOverlay *overlay;
+
+  gchar **argv;
+  gint current_uri;             /* index for argv */
+} DemoApp;
+
+static void
+on_about_to_finish (GstElement * playbin, DemoApp * d)
+{
+  if (d->argv[++d->current_uri] == NULL)
+    d->current_uri = 1;
+
+  g_print ("Now playing %s\n", d->argv[d->current_uri]);
+  g_object_set (playbin, "uri", d->argv[d->current_uri], NULL);
+}
+
+static void
+error_cb (GstBus * bus, GstMessage * msg, gpointer user_data)
+{
+  DemoApp *d = user_data;
+  gchar *debug = NULL;
+  GError *err = NULL;
+
+  gst_message_parse_error (msg, &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 (d->pipeline, GST_STATE_NULL);
+}
+
+static GstBusSyncReply
+bus_sync_handler (GstBus * bus, GstMessage * message, gpointer user_data)
+{
+  DemoApp *d = user_data;
+
+  if (gst_is_wayland_display_handle_need_context_message (message)) {
+    GstContext *context;
+    GdkDisplay *display;
+    struct wl_display *display_handle;
+
+    display = gtk_widget_get_display (d->video_widget);
+    display_handle = gdk_wayland_display_get_wl_display (display);
+    context = gst_wayland_display_handle_context_new (display_handle);
+    gst_element_set_context (GST_ELEMENT (GST_MESSAGE_SRC (message)), context);
+
+    goto drop;
+  } else if (gst_is_video_overlay_prepare_window_handle_message (message)) {
+    GtkAllocation allocation;
+    GdkWindow *window;
+    struct wl_surface *window_handle;
+
+    /* GST_MESSAGE_SRC (message) will be the overlay object that we have to
+     * use. This may be waylandsink, but it may also be playbin. In the latter
+     * case, we must make sure to use playbin instead of waylandsink, because
+     * playbin resets the window handle and render_rectangle after restarting
+     * playback and the actual window size is lost */
+    d->overlay = GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message));
+
+    gtk_widget_get_allocation (d->video_widget, &allocation);
+    window = gtk_widget_get_window (d->video_widget);
+    window_handle = gdk_wayland_window_get_wl_surface (window);
+
+    g_print ("setting window handle and size (%d x %d)\n",
+        allocation.width, allocation.height);
+
+    gst_video_overlay_set_window_handle (d->overlay, (guintptr) window_handle);
+    gst_video_overlay_set_render_rectangle (d->overlay, allocation.x,
+        allocation.y, allocation.width, allocation.height);
+
+    goto drop;
+  }
+
+  return GST_BUS_PASS;
+
+drop:
+  gst_message_unref (message);
+  return GST_BUS_DROP;
+}
+
+/* We use the "draw" callback to change the size of the sink
+ * because the "configure-event" is only sent to top-level widgets. */
+static gboolean
+video_widget_draw_cb (GtkWidget * widget, cairo_t * cr, gpointer user_data)
+{
+  DemoApp *d = user_data;
+  GtkAllocation allocation;
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  g_print ("draw_cb x %d, y %d, w %d, h %d\n",
+      allocation.x, allocation.y, allocation.width, allocation.height);
+
+  if (d->overlay) {
+    gst_video_overlay_set_render_rectangle (d->overlay, allocation.x,
+        allocation.y, allocation.width, allocation.height);
+  }
+
+  /* There is no need to call gst_video_overlay_expose().
+   * The wayland compositor can always re-draw the window
+   * based on its last contents if necessary */
+
+  return FALSE;
+}
+
+static void
+playing_clicked_cb (GtkButton * button, DemoApp * d)
+{
+  gst_element_set_state (d->pipeline, GST_STATE_PLAYING);
+}
+
+static void
+paused_clicked_cb (GtkButton * button, DemoApp * d)
+{
+  gst_element_set_state (d->pipeline, GST_STATE_PAUSED);
+}
+
+static void
+ready_clicked_cb (GtkButton * button, DemoApp * d)
+{
+  gst_element_set_state (d->pipeline, GST_STATE_READY);
+}
+
+static void
+null_clicked_cb (GtkButton * button, DemoApp * d)
+{
+  gst_element_set_state (d->pipeline, GST_STATE_NULL);
+}
+
+static void
+build_window (DemoApp * d)
+{
+  GtkBuilder *builder;
+  GtkWidget *button;
+  GError *error = NULL;
+
+  builder = gtk_builder_new ();
+  if (!gtk_builder_add_from_file (builder, "window.ui", &error)) {
+    g_error ("Failed to load window.ui: %s", error->message);
+    g_error_free (error);
+    goto exit;
+  }
+
+  d->app_widget = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
+  g_object_ref (d->app_widget);
+  g_signal_connect (d->app_widget, "destroy", G_CALLBACK (gtk_main_quit), NULL);
+
+  d->video_widget = GTK_WIDGET (gtk_builder_get_object (builder, "videoarea"));
+  g_signal_connect (d->video_widget, "draw",
+      G_CALLBACK (video_widget_draw_cb), d);
+
+  button = GTK_WIDGET (gtk_builder_get_object (builder, "button_playing"));
+  g_signal_connect (button, "clicked", G_CALLBACK (playing_clicked_cb), d);
+
+  button = GTK_WIDGET (gtk_builder_get_object (builder, "button_paused"));
+  g_signal_connect (button, "clicked", G_CALLBACK (paused_clicked_cb), d);
+
+  button = GTK_WIDGET (gtk_builder_get_object (builder, "button_ready"));
+  g_signal_connect (button, "clicked", G_CALLBACK (ready_clicked_cb), d);
+
+  button = GTK_WIDGET (gtk_builder_get_object (builder, "button_null"));
+  g_signal_connect (button, "clicked", G_CALLBACK (null_clicked_cb), d);
+
+  gtk_widget_show_all (d->app_widget);
+
+exit:
+  g_object_unref (builder);
+}
+
+int
+main (int argc, char **argv)
+{
+  DemoApp *d;
+  GOptionContext *context;
+  GstBus *bus;
+  GError *error = NULL;
+
+  gtk_init (&argc, &argv);
+  gst_init (&argc, &argv);
+
+  context = g_option_context_new ("- waylandsink gtk demo");
+  g_option_context_add_main_entries (context, entries, NULL);
+  if (!g_option_context_parse (context, &argc, &argv, &error)) {
+    g_printerr ("option parsing failed: %s\n", error->message);
+    return 1;
+  }
+
+  d = g_slice_new0 (DemoApp);
+  build_window (d);
+
+  if (argc > 1) {
+    d->argv = argv;
+    d->current_uri = 1;
+
+    d->pipeline = gst_parse_launch ("playbin video-sink=waylandsink", NULL);
+    g_object_set (d->pipeline, "uri", argv[d->current_uri], NULL);
+
+    /* enable looping */
+    g_signal_connect (d->pipeline, "about-to-finish",
+        G_CALLBACK (on_about_to_finish), d);
+  } else {
+    if (live) {
+      d->pipeline = gst_parse_launch ("videotestsrc pattern=18 "
+          "background-color=0x000062FF is-live=true ! waylandsink", NULL);
+    } else {
+      d->pipeline = gst_parse_launch ("videotestsrc pattern=18 "
+          "background-color=0x000062FF ! waylandsink", NULL);
+    }
+  }
+
+  bus = gst_pipeline_get_bus (GST_PIPELINE (d->pipeline));
+  gst_bus_add_signal_watch (bus);
+  g_signal_connect (bus, "message::error", G_CALLBACK (error_cb), d);
+  gst_bus_set_sync_handler (bus, bus_sync_handler, d, NULL);
+  gst_object_unref (bus);
+
+  gst_element_set_state (d->pipeline, GST_STATE_PLAYING);
+
+  gtk_main ();
+
+  gst_element_set_state (d->pipeline, GST_STATE_NULL);
+  gst_object_unref (d->pipeline);
+  g_object_unref (d->app_widget);
+  g_slice_free (DemoApp, d);
+
+  return 0;
+}

tests/examples/waylandsink/window.ui

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.18.2 -->
+<interface>
+  <requires lib="gtk+" version="3.0"/>
+  <object class="GtkWindow" id="window">
+    <property name="can_focus">False</property>
+    <property name="title" translatable="yes">GStreamer Wayland GTK Demo</property>
+    <child>
+      <object class="GtkBox" id="box">
+        <property name="visible">True</property>
+        <property name="can_focus">False</property>
+        <property name="orientation">vertical</property>
+        <child>
+          <object class="GtkEventBox" id="videoarea">
+            <property name="width_request">400</property>
+            <property name="height_request">300</property>
+            <property name="visible">True</property>
+            <property name="app_paintable">True</property>
+            <property name="can_focus">False</property>
+            <property name="double_buffered">False</property>
+            <property name="vexpand">True</property>
+            <child>
+              <placeholder/>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButtonBox" id="buttonbox">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="layout_style">center</property>
+            <child>
+              <object class="GtkButton" id="button_playing">
+                <property name="label" translatable="yes">PLAYING</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkButton" id="button_paused">
+                <property name="label" translatable="yes">PAUSED</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkButton" id="button_ready">
+                <property name="label" translatable="yes">READY</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">2</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkButton" id="button_null">
+                <property name="label" translatable="yes">NULL</property>
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">3</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">1</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>