| /* |
| * 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; |
| } |
| |