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/* GStreamer
* Copyright (C) <2008> Stefan Kost <ensonic@users.sf.net>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex
* with newer GTK versions (>= 3.3.0) */
#define GDK_DISABLE_DEPRECATION_WARNINGS
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <glib.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/video/videooverlay.h>
#include <gst/video/gstvideosink.h>
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;
GtkStyle *style;
int width, height;
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
style = gtk_widget_get_style (widget);
gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]);
/* 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;
}
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