gstreamer/tests/examples/gl/gtk/gtkvideooverlay/main.cpp
Matthew Waters 294da02a2f gl/examples: move to -bad
- fix all the compiler errors
- give them their own gl directory
2014-04-29 16:40:08 +10:00

230 lines
7.6 KiB
C++

/*
* 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.
*/
#include <gst/gst.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include "../gstgtk.h"
static GstBusSyncReply create_window (GstBus* bus, GstMessage* message, GtkWidget* widget)
{
// 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\n");
//do not call gdk_window_ensure_native for the first time here because
//we are in a different thread than the main thread
//(and the main thread the onne)
gst_video_overlay_set_gtk_window (GST_VIDEO_OVERLAY (GST_MESSAGE_SRC (message)), widget);
gst_message_unref (message);
return GST_BUS_DROP;
}
static void end_stream_cb(GstBus* bus, GstMessage* message, GstElement* pipeline)
{
g_print("End of stream\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref(pipeline);
gtk_main_quit();
}
static gboolean draw_cb(GtkWidget* widget, cairo_t *cr, GstElement* videosink)
{
g_print ("draw_cb\n");
gst_video_overlay_expose (GST_VIDEO_OVERLAY (videosink));
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");
}
static gchar* slider_fps_cb (GtkScale* scale, gdouble value, GstElement* pipeline)
{
//change the video frame rate dynamically
return g_strdup_printf ("video framerate: %0.*g", gtk_scale_get_digits (scale), value);
}
gint main (gint argc, gchar *argv[])
{
GtkWidget *area;
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
GstElement* pipeline = gst_pipeline_new ("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 an element!\n") ;
return -1;
}
//set window id on this event
GstBus* bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
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_element_set_state(pipeline, GST_STATE_READY);
area = gtk_drawing_area_new();
gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, area, NULL);
gst_object_unref (bus);
//window that contains an area where the video is drawn
GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_widget_set_size_request (window, 640, 480);
gtk_window_move (GTK_WINDOW (window), 300, 10);
gtk_window_set_title (GTK_WINDOW (window), "glimagesink implement the gstvideooverlay interface");
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);
//change framerate
GtkWidget* slider_fps = gtk_scale_new_with_range (GTK_ORIENTATION_VERTICAL,
1, 30, 2);
g_signal_connect (G_OBJECT (slider_fps), "format-value",
G_CALLBACK (slider_fps_cb), pipeline);
gtk_grid_attach (GTK_GRID (table), slider_fps, 1, 0, 1, 4);
gtk_widget_show (slider_fps);
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);
//area where the video is drawn
gtk_container_add (GTK_CONTAINER (window), area);
gtk_widget_realize(area);
//needed when being in GST_STATE_READY, GST_STATE_PAUSED
//or resizing/obscuring the window
g_signal_connect(area, "draw", G_CALLBACK(draw_cb), videosink);
gtk_widget_show_all (window);
gst_element_set_state(pipeline, GST_STATE_PLAYING);
gtk_main();
return 0;
}