В блоге Тристана есть хорошая статья о встраивании видео и полноэкранном видео http://tristanswork.blogspot.com/2008/09/fullscreen-video-in-gstreamer-with-gtk.html
Обновленный пример Тристана находится здесь: http://code.sat.qc.ca/miville/inhouse/prototypes/gstreamer/cpp/fullscreen/test.c
#include <gst/gst.h>
#include <gtk/gtk.h>
#include <gst/interfaces/xoverlay.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
gboolean handleBusMsg(GstMessage * message, GtkWidget *window)
{
// ignore anything but 'prepare-xwindow-id' element messages
if (GST_MESSAGE_TYPE(message) != GST_MESSAGE_ELEMENT)
return FALSE;
if (!gst_structure_has_name(message->structure, "prepare-xwindow-id"))
return FALSE;
g_print("Got prepare-xwindow-id msg\n");
// FIXME: see https://bugzilla.gnome.org/show_bug.cgi?id=599885
gst_x_overlay_set_xwindow_id(GST_X_OVERLAY(GST_MESSAGE_SRC(message)), GDK_WINDOW_XWINDOW(window->window));
return TRUE;
}
gboolean bus_call(GstBus * bus, GstMessage *msg, gpointer data)
{
GtkWidget *window = (GtkWidget*) data;
switch(GST_MESSAGE_TYPE(msg))
{
case GST_MESSAGE_ELEMENT:
{
handleBusMsg(msg, window);
break;
}
default:
break;
}
return TRUE;
}
static void makeWindowBlack(GtkWidget * window)
{
GdkColor color;
gdk_color_parse ("black", &color);
gtk_widget_modify_bg(window, GTK_STATE_NORMAL, &color); // needed to ensure black background
}
static gboolean
key_press_event_cb(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
if (event->keyval != 'f')
return TRUE;
else
g_print("you hit f\n");
gboolean isFullscreen = (gdk_window_get_state(GDK_WINDOW(widget->window)) == GDK_WINDOW_STATE_FULLSCREEN);
if (isFullscreen)
gtk_window_unfullscreen(GTK_WINDOW(widget));
else
gtk_window_fullscreen(GTK_WINDOW(widget));
return TRUE;
}
void destroy_cb(GtkWidget * widget, gpointer data)
{
GMainLoop *loop = (GMainLoop*) data;
g_print("Window destroyed\n");
g_main_loop_quit(loop);
}
gint main (gint argc, gchar *argv[])
{
GstStateChangeReturn ret;
GstElement *pipeline, *src, *sink;
GMainLoop *loop;
GtkWidget *window;
/* initialization */
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
// build window and attach expose event to expose callback
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
/* create elements */
pipeline = gst_pipeline_new ("my_pipeline");
gst_bus_add_watch(gst_pipeline_get_bus(GST_PIPELINE(pipeline)),
(GstBusFunc)bus_call, window);
src = gst_element_factory_make ("videotestsrc", NULL);
sink = gst_element_factory_make("xvimagesink", "videosink");
if (!sink)
g_print ("output could not be found - check your install\n");
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
g_object_set(G_OBJECT(sink), "force-aspect-ratio", TRUE, NULL);
/* link everything together */
if (!gst_element_link(src, sink)) {
g_print ("Failed to link one or more elements!\n");
return -1;
}
// attach key press signal to key press callback
gtk_widget_set_events(window, GDK_KEY_PRESS_MASK);
g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_event_cb), sink);
g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy_cb), loop);
/* run */
makeWindowBlack(window);
gtk_widget_show_all(window);
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;
}
g_main_loop_run (loop);
/* clean up */
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return 0;
}
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