[183/906] add an example to use texture from pixmap to do some kind of x_overlay...

diff --git a/tests/examples/clutter/clutteractor.c b/tests/examples/clutter/clutteractor.c
new file mode 100644 (file)
index 0000000..2b6216f
--- /dev/null
+++ b/tests/examples/clutter/clutteractor.c
@@ -0,0 +1,140 @@
+#include <X11/Xlib.h>
+#include <X11/extensions/Xcomposite.h>
+#include <clutter/clutter.h>
+#include <clutter/x11/clutter-x11.h>
+#include <clutter/glx/clutter-glx.h>
+#include <gst/gst.h>
+#include <gst/interfaces/xoverlay.h>
+
+#define W 320
+#define H 240
+
+struct GstGLClutterActor_ {
+  Window win;
+  Window root;
+  ClutterActor *texture;
+  ClutterActor *stage;
+};
+
+typedef struct GstGLClutterActor_ GstGLClutterActor;
+
+static gboolean
+create_actor (GstGLClutterActor *actor) {
+  ClutterKnot knot[2];
+  ClutterTimeline *timeline;
+  ClutterEffectTemplate *effect_template;
+
+  actor->texture = g_object_new (CLUTTER_GLX_TYPE_TEXTURE_PIXMAP, 
+                            "window", actor->win,
+                            "automatic-updates", TRUE, NULL);
+  clutter_container_add_actor (CLUTTER_CONTAINER (actor->stage), actor->texture);
+  clutter_actor_set_scale (actor->texture, 0.2 , 0.2);
+  clutter_actor_set_opacity (actor->texture, 0);
+  clutter_actor_show (actor->texture);  
+
+  timeline = clutter_timeline_new(120 /* frames */, 50 /* frames per second. */);
+  clutter_timeline_set_loop(timeline, TRUE); 
+  clutter_timeline_start(timeline);
+  
+  /* Instead of our custom callback, 
+   * we could use a standard callback. For instance, CLUTTER_ALPHA_SINE_INC. 
+   */
+  effect_template = 
+    clutter_effect_template_new (timeline, CLUTTER_ALPHA_SINE_INC);
+  
+  knot[0].x = -10;
+  knot[0].y = -10;
+  knot[1].x= 160;
+  knot[1].y= 120;
+ 
+  // Move the actor along the path:
+  clutter_effect_path (effect_template, actor->texture, knot, 
+                      sizeof(knot) / sizeof(ClutterKnot), NULL, NULL);
+  clutter_effect_scale (effect_template, actor->texture, 1.0, 1.0, NULL, NULL);
+  clutter_effect_rotate (effect_template, actor->texture, 
+                        CLUTTER_Z_AXIS, 360.0, W/2.0, H/2.0, 0.0, 
+                        CLUTTER_ROTATE_CW, NULL, NULL);
+  clutter_effect_rotate (effect_template, actor->texture, 
+                        CLUTTER_X_AXIS, 360.0, 0.0, W/4.0, 0.0, 
+                        CLUTTER_ROTATE_CW, NULL, NULL); 
+
+  // Also change the actor's opacity while moving it along the path:
+  // (You would probably want to use a different ClutterEffectTemplate, 
+  // so you could use a different alpha callback for this.)
+  clutter_effect_fade (effect_template, actor->texture, 255, NULL, NULL);
+
+  g_object_unref (effect_template);
+  g_object_unref (timeline);
+
+   return FALSE;
+}
+
+static GstBusSyncReply
+create_window (GstBus * bus, GstMessage * message, gpointer data)
+{
+  GstGLClutterActor *actor = (GstGLClutterActor *) data;
+  // ignore anything but 'prepare-xwindow-id' element messages
+  if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
+    return GST_BUS_PASS;
+  
+  if (!gst_structure_has_name (message->structure, "prepare-xwindow-id"))
+    return GST_BUS_PASS;
+  
+  g_debug ("CREATING WINDOW");
+  
+  gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)), actor->win); 
+  clutter_threads_add_idle ((GSourceFunc) create_actor, actor);
+  
+  gst_message_unref (message);
+  return GST_BUS_DROP;
+}
+
+int
+main (int argc, char *argv[])
+{
+  GstPipeline      *pipeline;
+  GstBus          *bus;
+  ClutterActor *stage;
+  GstGLClutterActor *actor;
+  Display *disp;
+  Window stage_win;
+
+  clutter_init (&argc, &argv);
+  gst_init (&argc, &argv);
+
+  disp = clutter_x11_get_default_display ();
+  if(!clutter_x11_has_composite_extension ()) {
+    g_error ("XComposite extension missing");
+  }
+  
+
+  stage = clutter_stage_get_default ();
+//  clutter_actor_set_size (CLUTTER_ACTOR (stage), W*3+2, H);
+
+  stage_win = clutter_x11_get_stage_window (CLUTTER_STAGE (stage));
+
+  actor = g_new0 (GstGLClutterActor, 1);
+  actor->stage = stage;
+  actor->win = XCreateSimpleWindow (disp, stage_win, 0, 0, W, H, 0, 0, 0);
+  XCompositeRedirectWindow (disp, actor->win, CompositeRedirectManual);
+  XMapRaised (disp, actor->win);
+  XSync (disp, FALSE);
+
+  pipeline = GST_PIPELINE (gst_parse_launch ("videotestsrc ! video/x-raw-rgb, width=320, height=240, framerate=(fraction)30/1 ! "
+                                             "glupload ! gleffects effect=twirl ! glimagesink", NULL));
+
+  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
+
+  gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, actor);
+
+  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
+
+  clutter_actor_show_all (stage);
+
+  clutter_main();
+
+  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
+  g_object_unref (pipeline);
+  
+  return 0;
+}