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247 lines
6.8 KiB
C
247 lines
6.8 KiB
C
/* GStreamer
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* Copyright (C) <2008> Stefan Kost <ensonic@users.sf.net>
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*
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* test-xoverlay: test xoverlay custom event handling and subregions
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <glib.h>
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#include <gdk/gdkx.h>
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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#include <gst/interfaces/xoverlay.h>
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#include <gst/video/gstvideosink.h>
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#if !GTK_CHECK_VERSION (2, 17, 7)
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static void
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gtk_widget_get_allocation (GtkWidget * w, GtkAllocation * a)
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{
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*a = w->allocation;
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}
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#endif
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static struct
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{
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gint w, h;
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GstXOverlay *overlay;
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GtkWidget *widget;
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gdouble a, p;
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GstVideoRectangle rect;
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gboolean running;
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} anim_state;
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static gboolean verbose = FALSE;
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static gboolean
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animate_render_rect (gpointer user_data)
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{
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if (anim_state.running) {
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GstVideoRectangle *r = &anim_state.rect;
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gdouble s = sin (3.0 * anim_state.a);
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gdouble c = cos (2.0 * anim_state.a);
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anim_state.a += anim_state.p;
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if (anim_state.a > (G_PI + G_PI))
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anim_state.a -= (G_PI + G_PI);
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r->w = anim_state.w / 2;
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r->x = (r->w - (r->w / 2)) + c * (r->w / 2);
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r->h = anim_state.h / 2;
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r->y = (r->h - (r->h / 2)) + s * (r->h / 2);
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gst_x_overlay_set_render_rectangle (anim_state.overlay, r->x, r->y,
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r->w, r->h);
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gtk_widget_queue_draw (anim_state.widget);
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}
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return TRUE;
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}
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static gboolean
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handle_resize_cb (GtkWidget * widget, GdkEventConfigure * event,
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gpointer user_data)
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{
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GtkAllocation allocation;
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gtk_widget_get_allocation (widget, &allocation);
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if (verbose) {
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g_print ("resize(%p): %dx%d\n", widget, allocation.width,
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allocation.height);
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}
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anim_state.w = allocation.width;
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anim_state.h = allocation.height;
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animate_render_rect (NULL);
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return FALSE;
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}
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static gboolean
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handle_expose_cb (GtkWidget * widget, GdkEventExpose * event,
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gpointer user_data)
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{
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GstVideoRectangle *r = &anim_state.rect;
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GtkAllocation allocation;
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GdkWindow *window;
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GtkStyle *style;
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cairo_t *cr;
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style = gtk_widget_get_style (widget);
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window = gtk_widget_get_window (widget);
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gtk_widget_get_allocation (widget, &allocation);
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cr = gdk_cairo_create (window);
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gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]);
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/* we should only redraw outside of the video rect! */
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cairo_rectangle (cr, 0, event->area.y, r->x, event->area.height);
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cairo_rectangle (cr, r->x + r->w, event->area.y,
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allocation.width - (r->x + r->w), event->area.height);
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cairo_rectangle (cr, event->area.x, 0, event->area.width, r->y);
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cairo_rectangle (cr, event->area.x, r->y + r->h,
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event->area.width, allocation.height - (r->y + r->h));
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cairo_fill (cr);
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cairo_destroy (cr);
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if (verbose) {
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g_print ("expose(%p)\n", widget);
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}
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gst_x_overlay_expose (anim_state.overlay);
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return FALSE;
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}
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static void
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window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
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{
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GstElement *pipeline = user_data;
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if (verbose) {
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g_print ("stopping\n");
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}
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anim_state.running = FALSE;
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gtk_widget_hide (widget);
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gtk_main_quit ();
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}
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gint
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main (gint argc, gchar ** argv)
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{
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GdkWindow *video_window_xwindow;
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GtkWidget *window, *video_window;
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GstElement *pipeline, *src, *sink;
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GstStateChangeReturn sret;
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gulong embed_xid = 0;
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gboolean force_aspect = FALSE, draw_borders = FALSE;
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if (!g_thread_supported ())
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g_thread_init (NULL);
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gst_init (&argc, &argv);
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gtk_init (&argc, &argv);
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if (argc) {
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gint arg;
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for (arg = 0; arg < argc; arg++) {
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if (!strcmp (argv[arg], "-a"))
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force_aspect = TRUE;
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else if (!strcmp (argv[arg], "-b"))
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draw_borders = TRUE;
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else if (!strcmp (argv[arg], "-v"))
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verbose = TRUE;
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}
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}
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/* prepare the pipeline */
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pipeline = gst_pipeline_new ("xvoverlay");
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src = gst_element_factory_make ("videotestsrc", NULL);
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sink = gst_element_factory_make ("xvimagesink", NULL);
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_element_link (src, sink);
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g_object_set (G_OBJECT (sink), "handle-events", FALSE,
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"force-aspect-ratio", force_aspect, "draw-borders", draw_borders, NULL);
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/* prepare the ui */
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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g_signal_connect (G_OBJECT (window), "delete-event",
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G_CALLBACK (window_closed), (gpointer) pipeline);
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gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);
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video_window = gtk_drawing_area_new ();
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gtk_widget_set_double_buffered (video_window, FALSE);
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gtk_container_add (GTK_CONTAINER (window), video_window);
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/* show the gui and play */
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gtk_widget_show_all (window);
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/* realize window now so that the video window gets created and we can
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* obtain its XID before the pipeline is started up and the videosink
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* asks for the XID of the window to render onto */
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gtk_widget_realize (window);
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video_window_xwindow = gtk_widget_get_window (video_window);
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embed_xid = GDK_WINDOW_XID (video_window_xwindow);
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if (verbose) {
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g_print ("Window realize: got XID %lu\n", embed_xid);
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}
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/* we know what the video sink is in this case (xvimagesink), so we can
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* just set it directly here now (instead of waiting for a prepare-xwindow-id
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* element message in a sync bus handler and setting it there) */
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gst_x_overlay_set_window_handle (GST_X_OVERLAY (sink), embed_xid);
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anim_state.overlay = GST_X_OVERLAY (sink);
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anim_state.widget = video_window;
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anim_state.w = 320;
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anim_state.h = 240;
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anim_state.a = 0.0;
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anim_state.p = (G_PI + G_PI) / 200.0;
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handle_resize_cb (video_window, NULL, sink);
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g_signal_connect (video_window, "configure-event",
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G_CALLBACK (handle_resize_cb), NULL);
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g_signal_connect (video_window, "expose-event",
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G_CALLBACK (handle_expose_cb), NULL);
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g_timeout_add (50, (GSourceFunc) animate_render_rect, NULL);
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/* run the pipeline */
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sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
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if (sret == GST_STATE_CHANGE_FAILURE)
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gst_element_set_state (pipeline, GST_STATE_NULL);
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else {
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anim_state.running = TRUE;
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gtk_main ();
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}
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gst_object_unref (pipeline);
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return 0;
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}
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