diff options
Diffstat (limited to 'tests/examples/gl/gtk/gtkvideooverlay/main.cpp')
| -rw-r--r-- | tests/examples/gl/gtk/gtkvideooverlay/main.cpp | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/tests/examples/gl/gtk/gtkvideooverlay/main.cpp b/tests/examples/gl/gtk/gtkvideooverlay/main.cpp new file mode 100644 index 000000000..7024cfca3 --- /dev/null +++ b/tests/examples/gl/gtk/gtkvideooverlay/main.cpp @@ -0,0 +1,230 @@ +/* + * 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; +} + |