tests/examples/gl/gtk/switchvideooverlay/main.cpp - mtk-gst-plugins-bad-debian - Git at Google

 /*
  * GStreamer
  * Copyright (C) 2008-2009 Julien Isorce <julien.isorce@gmail.com>
  *
  * 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

 #include <gst/gst.h>
 #include <gtk/gtk.h>
 #include <gdk/gdk.h>

 #include "../gstgtk.h"

 #ifdef HAVE_X11
 #include <X11/Xlib.h>
 #endif

 static GstBusSyncReply create_window (GstBus* bus, GstMessage* message, GtkWidget* widget)
 {
     GtkAllocation allocation;

     if (gst_gtk_handle_need_context (bus, message, NULL))
         return GST_BUS_DROP;

     // ignore anything but 'prepare-window-handle' element messages
     if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
         return GST_BUS_PASS;

     if (!gst_is_video_overlay_prepare_window_handle_message (message))
         return GST_BUS_PASS;

     g_print ("setting window handle %p\n", widget);

     gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), widget);

     gtk_widget_get_allocation (widget, &allocation);
     gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), allocation.x, allocation.y, allocation.width, allocation.height);

     gst_message_unref (message);

     return GST_BUS_DROP;
 }

 static gboolean
 resize_cb (GtkWidget * widget, GdkEvent * event, gpointer sink)
 {
     GtkAllocation allocation;

     gtk_widget_get_allocation (widget, &allocation);
     gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (sink), allocation.x, allocation.y, allocation.width, allocation.height);

     return FALSE;
 }

 static void end_stream_cb(GstBus* bus, GstMessage* message, GstElement* pipeline)
 {
     GError *error = NULL;
     gchar *details;

     switch (GST_MESSAGE_TYPE (message)) {
         case GST_MESSAGE_ERROR:
             gst_message_parse_error (message, &error, &details);

             g_print("Error %s\n", error->message);
             g_print("Details %s\n", details);
         /* fallthrough */
         case GST_MESSAGE_EOS:
             g_print("End of stream\n");

             gst_element_set_state (pipeline, GST_STATE_NULL);
             gst_object_unref(pipeline);

             gtk_main_quit();
             break;
         case GST_MESSAGE_WARNING:
             gst_message_parse_warning (message, &error, &details);

             g_print("Warning %s\n", error->message);
             g_print("Details %s\n", details);
             break;
         default:
             break;
     }
 }

 static gboolean expose_cb(GtkWidget* widget, cairo_t *cr, GstElement* videosink)
 {
     g_print ("expose %p\n", widget);
     g_print ("event mask: 0x%x, button_press 0x%x\n", gtk_widget_get_events (widget), GDK_BUTTON_PRESS_MASK);
     gst_video_overlay_expose (GST_VIDEO_OVERLAY (videosink));
     return FALSE;
 }

 static gboolean on_click_drawing_area(GtkWidget* widget, GdkEventButton* event, GstElement* videosink)
 {
     GtkAllocation allocation;
     GtkWidget *parent = gtk_widget_get_parent (widget);

     g_print ("switch the drawing area %p\n", widget);
     gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (videosink), widget);

     gtk_widget_get_allocation (widget, &allocation);
     gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (videosink), allocation.x, allocation.y, allocation.width, allocation.height);

     /* XXX: required on wayland as changing the window handle (subsurface)
      * requires a wl_surface::commit from the parent */
     if (parent)
       gtk_widget_queue_draw (parent);

     return FALSE;
 }


 static void destroy_cb(GtkWidget* widget, GdkEvent* event, GstElement* pipeline)
 {
     g_print("Close\n");

     gst_element_set_state (pipeline, GST_STATE_NULL);
     gst_object_unref(pipeline);

     gtk_main_quit();
 }


 static void button_state_null_cb(GtkWidget* widget, GstElement* pipeline)
 {
     gst_element_set_state (pipeline, GST_STATE_NULL);
     g_print ("GST_STATE_NULL\n");
 }


 static void button_state_ready_cb(GtkWidget* widget, GstElement* pipeline)
 {
     gst_element_set_state (pipeline, GST_STATE_READY);
     g_print ("GST_STATE_READY\n");
 }


 static void button_state_paused_cb(GtkWidget* widget, GstElement* pipeline)
 {
     gst_element_set_state (pipeline, GST_STATE_PAUSED);
     g_print ("GST_STATE_PAUSED\n");
 }


 static void button_state_playing_cb(GtkWidget* widget, GstElement* pipeline)
 {
     gst_element_set_state (pipeline, GST_STATE_PLAYING);
     g_print ("GST_STATE_PLAYING\n");
 }

 gint main (gint argc, gchar *argv[])
 {
 #ifdef HAVE_X11
     XInitThreads();
 #endif

     gtk_init (&argc, &argv);
     gst_init (&argc, &argv);

     GstElement* pipeline = gst_pipeline_new ("pipeline");

     //window that contains several ares where the video is drawn
     GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_widget_set_size_request (window, 640, 240);
     gtk_window_move (GTK_WINDOW (window), 300, 10);
     gtk_window_set_title (GTK_WINDOW (window), "click on left, right or outside the main window to switch the drawing area");
     GdkGeometry geometry;
     geometry.min_width = 1;
     geometry.min_height = 1;
     geometry.max_width = -1;
     geometry.max_height = -1;
     gtk_window_set_geometry_hints (GTK_WINDOW (window), window, &geometry, GDK_HINT_MIN_SIZE);

     //window to control the states
     GtkWidget* window_control = gtk_window_new (GTK_WINDOW_TOPLEVEL);
     geometry.min_width = 1;
     geometry.min_height = 1;
     geometry.max_width = -1;
     geometry.max_height = -1;
     gtk_window_set_geometry_hints (GTK_WINDOW (window_control), window_control, &geometry, GDK_HINT_MIN_SIZE);
     gtk_window_set_resizable (GTK_WINDOW (window_control), FALSE);
     gtk_window_move (GTK_WINDOW (window_control), 10, 10);
     GtkWidget* table = gtk_grid_new ();
     gtk_container_add (GTK_CONTAINER (window_control), table);

     //control state null
     GtkWidget* button_state_null = gtk_button_new_with_label ("GST_STATE_NULL");
     g_signal_connect (G_OBJECT (button_state_null), "clicked",
         G_CALLBACK (button_state_null_cb), pipeline);
     gtk_grid_attach (GTK_GRID (table), button_state_null, 0, 0, 1, 1);
     gtk_widget_show (button_state_null);

     //control state ready
     GtkWidget* button_state_ready = gtk_button_new_with_label ("GST_STATE_READY");
     g_signal_connect (G_OBJECT (button_state_ready), "clicked",
         G_CALLBACK (button_state_ready_cb), pipeline);
     gtk_grid_attach (GTK_GRID (table), button_state_ready, 0, 1, 1, 1);
     gtk_widget_show (button_state_ready);

     //control state paused
     GtkWidget* button_state_paused = gtk_button_new_with_label ("GST_STATE_PAUSED");
     g_signal_connect (G_OBJECT (button_state_paused), "clicked",
         G_CALLBACK (button_state_paused_cb), pipeline);
     gtk_grid_attach (GTK_GRID (table), button_state_paused, 0, 2, 1, 1);
     gtk_widget_show (button_state_paused);

     //control state playing
     GtkWidget* button_state_playing = gtk_button_new_with_label ("GST_STATE_PLAYING");
     g_signal_connect (G_OBJECT (button_state_playing), "clicked",
         G_CALLBACK (button_state_playing_cb), pipeline);
     gtk_grid_attach (GTK_GRID (table), button_state_playing, 0, 3, 1, 1);
     gtk_widget_show (button_state_playing);

     gtk_widget_show (table);
     gtk_widget_show (window_control);

     //configure the pipeline
     g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(destroy_cb), pipeline);

     GstElement* videosrc  = gst_element_factory_make ("videotestsrc", "videotestsrc");
     GstElement* videosink = gst_element_factory_make ("glimagesink", "glimagesink");

     gst_bin_add_many (GST_BIN (pipeline), videosrc, videosink, NULL);

     gboolean link_ok = gst_element_link_many(videosrc, videosink, NULL);
     if(!link_ok)
     {
         g_warning("Failed to link videosrc to videosink!\n") ;
         return -1;
     }

     //areas where the video is drawn
     GtkWidget* table_areas = gtk_grid_new ();
     gtk_container_add (GTK_CONTAINER (window), table_areas);
     GtkWidget* area_top_left = gtk_drawing_area_new();
     gtk_widget_add_events(area_top_left, GDK_BUTTON_PRESS_MASK);
     gtk_widget_set_size_request (area_top_left, 320, 240);
     gtk_grid_attach (GTK_GRID (table_areas), area_top_left, 0, 0, 1, 1);
     GtkWidget* area_top_right = gtk_drawing_area_new();
     gtk_widget_add_events(area_top_right, GDK_BUTTON_PRESS_MASK);
     gtk_widget_set_size_request (area_top_right, 320, 240);
     gtk_grid_attach (GTK_GRID (table_areas), area_top_right, 1, 0, 1, 1);

     gtk_widget_set_redraw_on_allocate (area_top_left, TRUE);
     gtk_widget_set_redraw_on_allocate (area_top_right, TRUE);
     gtk_widget_realize(area_top_left);
     gtk_widget_realize(area_top_right);

     GstBus* bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
     gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, area_top_right, NULL);
     gst_bus_add_signal_watch (bus);
     g_signal_connect(bus, "message::error", G_CALLBACK(end_stream_cb), pipeline);
     g_signal_connect(bus, "message::warning", G_CALLBACK(end_stream_cb), pipeline);
     g_signal_connect(bus, "message::eos", G_CALLBACK(end_stream_cb), pipeline);
     gst_object_unref (bus);

     //needed when being in GST_STATE_READY, GST_STATE_PAUSED
     //or resizing/obscuring the window
     g_signal_connect(area_top_left, "draw", G_CALLBACK(expose_cb), videosink);
     g_signal_connect(area_top_left, "configure-event", G_CALLBACK(resize_cb), videosink);
     g_signal_connect(area_top_right, "draw", G_CALLBACK(expose_cb), videosink);
     g_signal_connect(area_top_right, "configure-event", G_CALLBACK(resize_cb), videosink);

     //switch the drawing area
     g_signal_connect(area_top_left, "button-press-event", G_CALLBACK(on_click_drawing_area), videosink);
     g_signal_connect(area_top_right, "button-press-event", G_CALLBACK(on_click_drawing_area), videosink);

     gtk_widget_show_all (window);

     gst_element_set_state(pipeline, GST_STATE_PLAYING);

     gtk_main();

     return 0;
 }
	/*
	* GStreamer
	* Copyright (C) 2008-2009 Julien Isorce <julien.isorce@gmail.com>
	*
	* 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

	#include <gst/gst.h>
	#include <gtk/gtk.h>
	#include <gdk/gdk.h>

	#include "../gstgtk.h"

	#ifdef HAVE_X11
	#include <X11/Xlib.h>
	#endif

	static GstBusSyncReply create_window (GstBus* bus, GstMessage* message, GtkWidget* widget)
	{
	GtkAllocation allocation;

	if (gst_gtk_handle_need_context (bus, message, NULL))
	return GST_BUS_DROP;

	// ignore anything but 'prepare-window-handle' element messages
	if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
	return GST_BUS_PASS;

	if (!gst_is_video_overlay_prepare_window_handle_message (message))
	return GST_BUS_PASS;

	g_print ("setting window handle %p\n", widget);

	gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), widget);

	gtk_widget_get_allocation (widget, &allocation);
	gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), allocation.x, allocation.y, allocation.width, allocation.height);

	gst_message_unref (message);

	return GST_BUS_DROP;
	}

	static gboolean
	resize_cb (GtkWidget * widget, GdkEvent * event, gpointer sink)
	{
	GtkAllocation allocation;

	gtk_widget_get_allocation (widget, &allocation);
	gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (sink), allocation.x, allocation.y, allocation.width, allocation.height);

	return FALSE;
	}

	static void end_stream_cb(GstBus* bus, GstMessage* message, GstElement* pipeline)
	{
	GError *error = NULL;
	gchar *details;

	switch (GST_MESSAGE_TYPE (message)) {
	case GST_MESSAGE_ERROR:
	gst_message_parse_error (message, &error, &details);

	g_print("Error %s\n", error->message);
	g_print("Details %s\n", details);
	/* fallthrough */
	case GST_MESSAGE_EOS:
	g_print("End of stream\n");

	gst_element_set_state (pipeline, GST_STATE_NULL);
	gst_object_unref(pipeline);

	gtk_main_quit();
	break;
	case GST_MESSAGE_WARNING:
	gst_message_parse_warning (message, &error, &details);

	g_print("Warning %s\n", error->message);
	g_print("Details %s\n", details);
	break;
	default:
	break;
	}
	}

	static gboolean expose_cb(GtkWidget* widget, cairo_t cr, GstElement videosink)
	{
	g_print ("expose %p\n", widget);
	g_print ("event mask: 0x%x, button_press 0x%x\n", gtk_widget_get_events (widget), GDK_BUTTON_PRESS_MASK);
	gst_video_overlay_expose (GST_VIDEO_OVERLAY (videosink));
	return FALSE;
	}

	static gboolean on_click_drawing_area(GtkWidget* widget, GdkEventButton* event, GstElement* videosink)
	{
	GtkAllocation allocation;
	GtkWidget *parent = gtk_widget_get_parent (widget);

	g_print ("switch the drawing area %p\n", widget);
	gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (videosink), widget);

	gtk_widget_get_allocation (widget, &allocation);
	gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (videosink), allocation.x, allocation.y, allocation.width, allocation.height);

	/* XXX: required on wayland as changing the window handle (subsurface)
	* requires a wl_surface::commit from the parent */
	if (parent)
	gtk_widget_queue_draw (parent);

	return FALSE;
	}


	static void destroy_cb(GtkWidget* widget, GdkEvent* event, GstElement* pipeline)
	{
	g_print("Close\n");

	gst_element_set_state (pipeline, GST_STATE_NULL);
	gst_object_unref(pipeline);

	gtk_main_quit();
	}


	static void button_state_null_cb(GtkWidget* widget, GstElement* pipeline)
	{
	gst_element_set_state (pipeline, GST_STATE_NULL);
	g_print ("GST_STATE_NULL\n");
	}


	static void button_state_ready_cb(GtkWidget* widget, GstElement* pipeline)
	{
	gst_element_set_state (pipeline, GST_STATE_READY);
	g_print ("GST_STATE_READY\n");
	}


	static void button_state_paused_cb(GtkWidget* widget, GstElement* pipeline)
	{
	gst_element_set_state (pipeline, GST_STATE_PAUSED);
	g_print ("GST_STATE_PAUSED\n");
	}


	static void button_state_playing_cb(GtkWidget* widget, GstElement* pipeline)
	{
	gst_element_set_state (pipeline, GST_STATE_PLAYING);
	g_print ("GST_STATE_PLAYING\n");
	}

	gint main (gint argc, gchar *argv[])
	{
	#ifdef HAVE_X11
	XInitThreads();
	#endif

	gtk_init (&argc, &argv);
	gst_init (&argc, &argv);

	GstElement* pipeline = gst_pipeline_new ("pipeline");

	//window that contains several ares where the video is drawn
	GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_widget_set_size_request (window, 640, 240);
	gtk_window_move (GTK_WINDOW (window), 300, 10);
	gtk_window_set_title (GTK_WINDOW (window), "click on left, right or outside the main window to switch the drawing area");
	GdkGeometry geometry;
	geometry.min_width = 1;
	geometry.min_height = 1;
	geometry.max_width = -1;
	geometry.max_height = -1;
	gtk_window_set_geometry_hints (GTK_WINDOW (window), window, &geometry, GDK_HINT_MIN_SIZE);

	//window to control the states
	GtkWidget* window_control = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	geometry.min_width = 1;
	geometry.min_height = 1;
	geometry.max_width = -1;
	geometry.max_height = -1;
	gtk_window_set_geometry_hints (GTK_WINDOW (window_control), window_control, &geometry, GDK_HINT_MIN_SIZE);
	gtk_window_set_resizable (GTK_WINDOW (window_control), FALSE);
	gtk_window_move (GTK_WINDOW (window_control), 10, 10);
	GtkWidget* table = gtk_grid_new ();
	gtk_container_add (GTK_CONTAINER (window_control), table);

	//control state null
	GtkWidget* button_state_null = gtk_button_new_with_label ("GST_STATE_NULL");
	g_signal_connect (G_OBJECT (button_state_null), "clicked",
	G_CALLBACK (button_state_null_cb), pipeline);
	gtk_grid_attach (GTK_GRID (table), button_state_null, 0, 0, 1, 1);
	gtk_widget_show (button_state_null);

	//control state ready
	GtkWidget* button_state_ready = gtk_button_new_with_label ("GST_STATE_READY");
	g_signal_connect (G_OBJECT (button_state_ready), "clicked",
	G_CALLBACK (button_state_ready_cb), pipeline);
	gtk_grid_attach (GTK_GRID (table), button_state_ready, 0, 1, 1, 1);
	gtk_widget_show (button_state_ready);

	//control state paused
	GtkWidget* button_state_paused = gtk_button_new_with_label ("GST_STATE_PAUSED");
	g_signal_connect (G_OBJECT (button_state_paused), "clicked",
	G_CALLBACK (button_state_paused_cb), pipeline);
	gtk_grid_attach (GTK_GRID (table), button_state_paused, 0, 2, 1, 1);
	gtk_widget_show (button_state_paused);

	//control state playing
	GtkWidget* button_state_playing = gtk_button_new_with_label ("GST_STATE_PLAYING");
	g_signal_connect (G_OBJECT (button_state_playing), "clicked",
	G_CALLBACK (button_state_playing_cb), pipeline);
	gtk_grid_attach (GTK_GRID (table), button_state_playing, 0, 3, 1, 1);
	gtk_widget_show (button_state_playing);

	gtk_widget_show (table);
	gtk_widget_show (window_control);

	//configure the pipeline
	g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(destroy_cb), pipeline);

	GstElement* videosrc = gst_element_factory_make ("videotestsrc", "videotestsrc");
	GstElement* videosink = gst_element_factory_make ("glimagesink", "glimagesink");

	gst_bin_add_many (GST_BIN (pipeline), videosrc, videosink, NULL);

	gboolean link_ok = gst_element_link_many(videosrc, videosink, NULL);
	if(!link_ok)
	{
	g_warning("Failed to link videosrc to videosink!\n") ;
	return -1;
	}

	//areas where the video is drawn
	GtkWidget* table_areas = gtk_grid_new ();
	gtk_container_add (GTK_CONTAINER (window), table_areas);
	GtkWidget* area_top_left = gtk_drawing_area_new();
	gtk_widget_add_events(area_top_left, GDK_BUTTON_PRESS_MASK);
	gtk_widget_set_size_request (area_top_left, 320, 240);
	gtk_grid_attach (GTK_GRID (table_areas), area_top_left, 0, 0, 1, 1);
	GtkWidget* area_top_right = gtk_drawing_area_new();
	gtk_widget_add_events(area_top_right, GDK_BUTTON_PRESS_MASK);
	gtk_widget_set_size_request (area_top_right, 320, 240);
	gtk_grid_attach (GTK_GRID (table_areas), area_top_right, 1, 0, 1, 1);

	gtk_widget_set_redraw_on_allocate (area_top_left, TRUE);
	gtk_widget_set_redraw_on_allocate (area_top_right, TRUE);
	gtk_widget_realize(area_top_left);
	gtk_widget_realize(area_top_right);

	GstBus* bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
	gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, area_top_right, NULL);
	gst_bus_add_signal_watch (bus);
	g_signal_connect(bus, "message::error", G_CALLBACK(end_stream_cb), pipeline);
	g_signal_connect(bus, "message::warning", G_CALLBACK(end_stream_cb), pipeline);
	g_signal_connect(bus, "message::eos", G_CALLBACK(end_stream_cb), pipeline);
	gst_object_unref (bus);

	//needed when being in GST_STATE_READY, GST_STATE_PAUSED
	//or resizing/obscuring the window
	g_signal_connect(area_top_left, "draw", G_CALLBACK(expose_cb), videosink);
	g_signal_connect(area_top_left, "configure-event", G_CALLBACK(resize_cb), videosink);
	g_signal_connect(area_top_right, "draw", G_CALLBACK(expose_cb), videosink);
	g_signal_connect(area_top_right, "configure-event", G_CALLBACK(resize_cb), videosink);

	//switch the drawing area
	g_signal_connect(area_top_left, "button-press-event", G_CALLBACK(on_click_drawing_area), videosink);
	g_signal_connect(area_top_right, "button-press-event", G_CALLBACK(on_click_drawing_area), videosink);

	gtk_widget_show_all (window);

	gst_element_set_state(pipeline, GST_STATE_PLAYING);

	gtk_main();

	return 0;
	}