gtk-clutter-app.c

   1
   2 #include <gst/gst.h>
   3 #include <gtk/gtk.h>
   4 #include <gst/interfaces/xoverlay.h>
   5 #include <gdk/gdk.h>
   6 #include <gdk/gdkx.h>
   7 #include <clutter-gst/clutter-gst.h>
   8 #include <clutter-gtk/clutter-gtk.h>
   9 #include <clutter/clutter.h>
  10 #include <clutter/x11/clutter-x11.h>
  11
  12
  13 #include "app.h"
  14
  15 typedef struct windows_s {
  16   GstElement *sinks[2];
  17   ClutterActor *stages[2];
  18   XID windows[2];
  19   int n;
  20 } windows_t;
  21
  22
  23 static void
  24 bus_call(GstBus * bus, GstMessage *msg, gpointer data)
  25 {
  26   windows_t *w = (windows_t *)data;
  27   if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ELEMENT &&
  28       gst_structure_has_name(msg->structure, "prepare-xwindow-id")){
  29     g_print("Got prepare-xwindow-id msg\n");
  30     for (int i = 0; i < 2; i++){
  31       clutter_x11_set_stage_foreign(CLUTTER_STAGE(w->stages[i]), w->windows[i]);
  32     }
  33   }
  34 }
  35
  36 static void
  37 toggle_fullscreen(GtkWidget *widget){
  38   GdkWindowState state = gdk_window_get_state(GDK_WINDOW(widget->window));
  39   if (state == GDK_WINDOW_STATE_FULLSCREEN){
  40     gtk_window_unfullscreen(GTK_WINDOW(widget));
  41   }
  42   else{
  43     gtk_window_fullscreen(GTK_WINDOW(widget));
  44   }
  45 }
  46
  47
  48 static gboolean
  49 key_press_event_cb(GtkWidget *widget, GdkEventKey *event, gpointer data)
  50 {
  51   g_print("got key %c\n", event->keyval);
  52   switch (event->keyval){
  53   case 'f':
  54     toggle_fullscreen(widget);
  55     break;
  56   case 'q':
  57     g_signal_emit_by_name(widget, "destroy");
  58     break;
  59   default:
  60     break;
  61   }
  62   return TRUE;
  63 }
  64
  65 void destroy_cb(GtkWidget * widget, gpointer data)
  66 {
  67   GMainLoop *loop = (GMainLoop*) data;
  68   g_print("Window destroyed\n");
  69   g_main_loop_quit(loop);
  70 }
  71
  72 static void
  73 video_widget_realize_cb (GtkWidget * widget, gpointer data)
  74 {
  75   windows_t *w = (windows_t *)data;
  76   if (w->n < 2){
  77     w->windows[w->n] = GDK_WINDOW_XID(GDK_WINDOW(widget->window));
  78   }
  79   else {
  80     g_print("wtf, there seem to be %d windows!\n", w->n);
  81   }
  82   w->n++;
  83   return;
  84 }
  85
  86
  87 static void
  88 set_up_window(GMainLoop *loop, GtkWidget *window){
  89   static const GdkColor black = {0, 0, 0, 0};
  90   gtk_window_set_default_size(GTK_WINDOW(window), WIDTH, HEIGHT);
  91
  92   //gtk_window_fullscreen(GTK_WINDOW(widget));
  93   //GdkScreen *screen = gdk_display_get_screen(0|1);
  94   //gtk_window_set_screen(GTK_WINDOW(window), screen);
  95
  96   // attach key press signal to key press callback
  97   gtk_widget_set_events(window, GDK_KEY_PRESS_MASK);
  98   g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_event_cb), NULL);
  99   g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy_cb), loop);
 100
 101   gtk_widget_modify_bg(window, GTK_STATE_NORMAL, &black);
 102   gtk_widget_show_all(window);
 103 }
 104
 105
 106 ClutterActor *
 107 new_stage(){
 108   static const ClutterColor black = {0, 0, 0, 255};
 109   ClutterActor *stage = clutter_stage_get_default();
 110   clutter_stage_set_color(CLUTTER_STAGE(stage), &black);
 111   clutter_stage_set_fullscreen(CLUTTER_STAGE(stage), TRUE);
 112   clutter_stage_hide_cursor(CLUTTER_STAGE(stage));
 113   return stage;
 114 }
 115
 116
 117 gint main (gint argc, gchar *argv[])
 118 {
 119   /* initialization */
 120   gst_init (&argc, &argv);
 121   gtk_init(&argc, &argv);
 122   clutter_init(&argc, &argv);
 123
 124   /* herein we count windows and map them to sinks */
 125   windows_t windows;
 126   windows.n = 0;
 127
 128   GMainLoop *loop = g_main_loop_new(NULL, FALSE);
 129   GtkWidget *window1 = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 130   GtkWidget *window2 = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 131   g_signal_connect (window1, "realize",
 132       G_CALLBACK (video_widget_realize_cb), &windows);
 133   g_signal_connect (window2, "realize",
 134       G_CALLBACK (video_widget_realize_cb), &windows);
 135
 136   /* Make a timeline */
 137   ClutterTimeline  *timeline = clutter_timeline_new(1000);
 138   g_object_set(timeline, "loop", TRUE, NULL);
 139
 140   ClutterActor *stage1 = new_stage();
 141   ClutterTexture *texture1 = g_object_new (CLUTTER_TYPE_TEXTURE,
 142       "sync-size",       FALSE,
 143       "disable-slicing", TRUE,
 144       NULL);
 145   GstElement *sink1 = clutter_gst_video_sink_new(CLUTTER_TEXTURE(texture1));
 146
 147   ClutterActor *stage2 = new_stage();
 148   ClutterTexture *texture2 = g_object_new (CLUTTER_TYPE_TEXTURE,
 149       "sync-size",       FALSE,
 150       "disable-slicing", TRUE,
 151       NULL);
 152   GstElement *sink2 = clutter_gst_video_sink_new(CLUTTER_TEXTURE(texture2));
 153
 154
 155   /*To avoid flickering on show, you should call gtk_widget_show() or
 156     gtk_widget_realize() before calling clutter_actor_show() */
 157
 158   //GstElement *sink1 = gst_element_factory_make("ximagesink", "sink1");
 159   //GstElement *sink2 = gst_element_factory_make("ximagesink", "sink2");
 160
 161   GstElement *pipeline = (GstElement *)make_dual_pipeline(sink1, sink2);
 162
 163   windows.sinks[0] = sink1;
 164   windows.sinks[1] = sink2;
 165   windows.stages[0] = stage1;
 166   windows.stages[1] = stage2;
 167
 168   set_up_window(loop, window1);
 169   set_up_window(loop, window2);
 170
 171   GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
 172   gst_bus_add_watch(bus, (GstBusFunc)bus_call, &windows);
 173   gst_object_unref(bus);
 174
 175   gst_element_set_state(pipeline, GST_STATE_PLAYING);
 176   /* start the timeline */
 177   clutter_timeline_start(timeline);
 178   clutter_group_add(CLUTTER_GROUP(stage1), texture1);
 179   clutter_group_add(CLUTTER_GROUP(stage2), texture2);
 180   clutter_actor_show_all(stage1);
 181   clutter_actor_show_all(stage2);
 182
 183   g_main_loop_run(loop);
 184
 185   gst_element_set_state (pipeline, GST_STATE_NULL);
 186   gst_object_unref (pipeline);
 187   return 0;
 188 }
 189