/* GStreamer * Copyright (C) <2008> Stefan Kost * * test-videooverlay: test videooverlay custom event handling and subregions * * 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 /* Disable deprecation warnings because we need to use * gtk_widget_set_double_buffered () or display will flicker */ #define GDK_DISABLE_DEPRECATION_WARNINGS #include #include #include #include #include #include #include #include #include static struct { gint w, h; GstVideoOverlay *overlay; GtkWidget *widget; gdouble a, p; GstVideoRectangle rect; gboolean running; } anim_state; static gboolean verbose = FALSE; static gboolean animate_render_rect (gpointer user_data) { if (anim_state.running) { GstVideoRectangle *r = &anim_state.rect; gdouble s = sin (3.0 * anim_state.a); gdouble c = cos (2.0 * anim_state.a); anim_state.a += anim_state.p; if (anim_state.a > (G_PI + G_PI)) anim_state.a -= (G_PI + G_PI); r->w = anim_state.w / 2; r->x = (r->w - (r->w / 2)) + c * (r->w / 2); r->h = anim_state.h / 2; r->y = (r->h - (r->h / 2)) + s * (r->h / 2); gst_video_overlay_set_render_rectangle (anim_state.overlay, r->x, r->y, r->w, r->h); gtk_widget_queue_draw (anim_state.widget); } return TRUE; } static gboolean handle_resize_cb (GtkWidget * widget, GdkEventConfigure * event, gpointer user_data) { GtkAllocation allocation; gtk_widget_get_allocation (widget, &allocation); if (verbose) { g_print ("resize(%p): %dx%d\n", widget, allocation.width, allocation.height); } anim_state.w = allocation.width; anim_state.h = allocation.height; animate_render_rect (NULL); return FALSE; } static gboolean handle_draw_cb (GtkWidget * widget, cairo_t * cr, gpointer user_data) { GstVideoRectangle *r = &anim_state.rect; GtkStyleContext *style; GdkRGBA color; int width, height; width = gtk_widget_get_allocated_width (widget); height = gtk_widget_get_allocated_height (widget); style = gtk_widget_get_style_context (widget); gtk_style_context_get_color (style, 0, &color); gdk_cairo_set_source_rgba (cr, &color); /* we should only redraw outside of the video rect! */ cairo_rectangle (cr, 0, 0, r->x, height); cairo_rectangle (cr, r->x + r->w, 0, width - (r->x + r->w), height); cairo_rectangle (cr, 0, 0, width, r->y); cairo_rectangle (cr, 0, r->y + r->h, width, height - (r->y + r->h)); cairo_fill (cr); if (verbose) { g_print ("draw(%p)\n", widget); } gst_video_overlay_expose (anim_state.overlay); return FALSE; } static void window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data) { GstElement *pipeline = user_data; if (verbose) { g_print ("stopping\n"); } anim_state.running = FALSE; gtk_widget_hide (widget); gst_element_set_state (pipeline, GST_STATE_NULL); gtk_main_quit (); } gint main (gint argc, gchar ** argv) { GdkWindow *video_window_xwindow; GtkWidget *window, *video_window; GstElement *pipeline, *src, *sink; GstStateChangeReturn sret; gulong embed_xid = 0; gboolean force_aspect = FALSE, draw_borders = FALSE; gst_init (&argc, &argv); gtk_init (&argc, &argv); if (argc) { gint arg; for (arg = 0; arg < argc; arg++) { if (!strcmp (argv[arg], "-a")) force_aspect = TRUE; else if (!strcmp (argv[arg], "-b")) draw_borders = TRUE; else if (!strcmp (argv[arg], "-v")) verbose = TRUE; } } /* prepare the pipeline */ pipeline = gst_pipeline_new ("xvoverlay"); src = gst_element_factory_make ("videotestsrc", NULL); sink = gst_element_factory_make ("xvimagesink", NULL); gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL); gst_element_link (src, sink); g_object_set (G_OBJECT (sink), "handle-events", FALSE, "force-aspect-ratio", force_aspect, "draw-borders", draw_borders, NULL); /* prepare the ui */ window = gtk_window_new (GTK_WINDOW_TOPLEVEL); g_signal_connect (G_OBJECT (window), "delete-event", G_CALLBACK (window_closed), (gpointer) pipeline); gtk_window_set_default_size (GTK_WINDOW (window), 320, 240); video_window = gtk_drawing_area_new (); gtk_widget_set_double_buffered (video_window, FALSE); gtk_container_add (GTK_CONTAINER (window), video_window); /* show the gui and play */ gtk_widget_show_all (window); /* realize window now so that the video window gets created and we can * obtain its XID before the pipeline is started up and the videosink * asks for the XID of the window to render onto */ gtk_widget_realize (window); video_window_xwindow = gtk_widget_get_window (video_window); embed_xid = GDK_WINDOW_XID (video_window_xwindow); if (verbose) { g_print ("Window realize: got XID %lu\n", embed_xid); } /* we know what the video sink is in this case (xvimagesink), so we can * just set it directly here now (instead of waiting for a * prepare-window-handle element message in a sync bus handler and setting * it there) */ gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (sink), embed_xid); anim_state.overlay = GST_VIDEO_OVERLAY (sink); anim_state.widget = video_window; anim_state.w = 320; anim_state.h = 240; anim_state.a = 0.0; anim_state.p = (G_PI + G_PI) / 200.0; handle_resize_cb (video_window, NULL, sink); g_signal_connect (video_window, "configure-event", G_CALLBACK (handle_resize_cb), NULL); g_signal_connect (video_window, "draw", G_CALLBACK (handle_draw_cb), NULL); g_timeout_add (50, (GSourceFunc) animate_render_rect, NULL); /* run the pipeline */ sret = gst_element_set_state (pipeline, GST_STATE_PLAYING); if (sret == GST_STATE_CHANGE_FAILURE) gst_element_set_state (pipeline, GST_STATE_NULL); else { anim_state.running = TRUE; gtk_main (); } gst_object_unref (pipeline); return 0; }