/* * GStreamer * Copyright (C) 2014 Matthew Waters <matthew@centricular.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 <gtk/gtk.h> #include <gst/gst.h> 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 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 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 (); } int main (int argc, char *argv[]) { GtkWidget *window, *window_control; GtkWidget *button_state_null, *button_state_ready; GtkWidget *button_state_paused, *button_state_playing; GtkWidget *grid, *area; GstElement *pipeline; GstElement *videosrc, *videosink; GstStateChangeReturn ret; GstCaps *caps; GstBus *bus; gst_init (&argc, &argv); gtk_init (&argc, &argv); pipeline = gst_pipeline_new ("pipeline"); //window that contains an area where the video is drawn window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_default_size (GTK_WINDOW (window), 640, 480); gtk_window_move (GTK_WINDOW (window), 300, 10); gtk_window_set_title (GTK_WINDOW (window), "gtkgstwidget"); //window to control the states window_control = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_resizable (GTK_WINDOW (window_control), FALSE); gtk_window_move (GTK_WINDOW (window_control), 10, 10); grid = gtk_grid_new (); gtk_container_add (GTK_CONTAINER (window_control), grid); //control state null 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 (grid), button_state_null, 0, 1, 1, 1); gtk_widget_show (button_state_null); //control state ready 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 (grid), button_state_ready, 0, 2, 1, 1); gtk_widget_show (button_state_ready); //control state paused 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 (grid), button_state_paused, 0, 3, 1, 1); gtk_widget_show (button_state_paused); //control state playing 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 (grid), button_state_playing, 0, 4, 1, 1); gtk_widget_show (button_state_playing); gtk_widget_show (grid); gtk_widget_show (window_control); g_signal_connect (G_OBJECT (window), "delete-event", G_CALLBACK (destroy_cb), pipeline); //configure the pipeline videosrc = gst_element_factory_make ("videotestsrc", "videotestsrc"); videosink = gst_element_factory_make ("gtksink", "gtksink"); g_object_get (videosink, "widget", &area, NULL); gtk_container_add (GTK_CONTAINER (window), area); g_object_unref (area); gtk_widget_realize (area); caps = gst_caps_new_simple ("video/x-raw", "width", G_TYPE_INT, 640, "height", G_TYPE_INT, 480, "format", G_TYPE_STRING, "BGRA", NULL); gst_bin_add_many (GST_BIN (pipeline), videosrc, videosink, NULL); if (!gst_element_link_filtered (videosrc, videosink, caps)) { gst_caps_unref (caps); g_warning ("Failed to link videosrc to glfiltercube!\n"); return -1; } gst_caps_unref (caps); //set window id on this event bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline)); 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); //start ret = gst_element_set_state (pipeline, GST_STATE_PLAYING); if (ret == GST_STATE_CHANGE_FAILURE) { g_print ("Failed to start up pipeline!\n"); return -1; } gtk_widget_show_all (window); gtk_main (); gst_deinit (); return 0; }