gstreamer/tests/icles/test-colorkey.c

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/* GStreamer
* Copyright (C) <2008> Stefan Kost <ensonic@users.sf.net>
*
* test-colorkey: test manual colorkey handling
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <X11/Xlib.h>
#include <gst/gst.h>
#include <gst/interfaces/xoverlay.h>
#include <gst/interfaces/propertyprobe.h>
static GtkWidget *video_window = NULL;
static GstElement *sink = NULL;
static guint embed_xid = 0;
static GdkGC *trans_gc = NULL;
static GstBusSyncReply
bus_sync_handler (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
{
if ((GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT) &&
gst_structure_has_name (message->structure, "prepare-xwindow-id")) {
GstElement *element = GST_ELEMENT (GST_MESSAGE_SRC (message));
g_print ("got prepare-xwindow-id\n");
if (!embed_xid) {
embed_xid = GDK_WINDOW_XID (GDK_WINDOW (video_window->window));
}
if (g_object_class_find_property (G_OBJECT_GET_CLASS (element),
"force-aspect-ratio")) {
g_object_set (element, "force-aspect-ratio", TRUE, NULL);
}
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)),
embed_xid);
}
return GST_BUS_PASS;
}
static void
redraw_overlay (GtkWidget * widget)
{
gdk_draw_rectangle (widget->window, widget->style->white_gc, TRUE,
0, 0, widget->allocation.width, widget->allocation.height);
if (trans_gc) {
guint x, y;
guint h = widget->allocation.height * 0.75;
gdk_draw_rectangle (widget->window, trans_gc, TRUE,
0, 0, widget->allocation.width, h);
for (y = h; y < widget->allocation.height; y++) {
for (x = 0; x < widget->allocation.width; x++) {
if (((x & 1) || (y & 1)) && (x & 1) != (y & 1)) {
gdk_draw_point (widget->window, trans_gc, x, y);
}
}
}
}
}
static gboolean
handle_resize_cb (GtkWidget * widget, GdkEventConfigure * event, gpointer data)
{
redraw_overlay (widget);
return FALSE;
}
static gboolean
handle_expose_cb (GtkWidget * widget, GdkEventExpose * event, gpointer data)
{
redraw_overlay (widget);
return FALSE;
}
static void
msg_state_changed (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
{
const GstStructure *s;
s = gst_message_get_structure (message);
/* We only care about state changed on the pipeline */
if (s && GST_MESSAGE_SRC (message) == GST_OBJECT_CAST (pipeline)) {
GstState old, new, pending;
gint color;
gst_message_parse_state_changed (message, &old, &new, &pending);
/* When state of the pipeline changes to paused or playing we start updating scale */
switch (GST_STATE_TRANSITION (old, new)) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
g_object_get (G_OBJECT (sink), "colorkey", &color, NULL);
if (color != -1) {
GdkColor trans_color = { 0,
(color & 0xff0000) >> 8,
(color & 0xff00),
(color & 0xff) << 8
};
trans_gc = gdk_gc_new (video_window->window);
gdk_gc_set_rgb_fg_color (trans_gc, &trans_color);
}
handle_resize_cb (video_window, NULL, NULL);
break;
default:
break;
}
}
}
static void
window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
{
GstElement *pipeline = user_data;
g_print ("stopping\n");
gtk_widget_hide_all (widget);
gst_element_set_state (pipeline, GST_STATE_NULL);
gtk_main_quit ();
}
int
main (int argc, char **argv)
{
GtkWidget *window;
GstElement *pipeline, *src;
GstBus *bus;
GstStateChangeReturn sret;
GstPropertyProbe *probe;
GValueArray *arr;
if (!g_thread_supported ())
g_thread_init (NULL);
if (!XInitThreads ()) {
g_print ("XInitThreads failed\n");
exit (-1);
}
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
/* prepare the pipeline */
pipeline = gst_pipeline_new ("xvoverlay");
src = gst_element_factory_make ("videotestsrc", NULL);
sink = gst_element_factory_make ("xvimagesink", NULL);
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
gst_element_link (src, sink);
g_object_set (G_OBJECT (sink), "autopaint-colorkey", FALSE, "force-aspect-ratio", TRUE, "draw-borders", FALSE, "colorkey", 0x7F7F7F, /* gray */
NULL);
/* check xvimagesink capabilities */
sret = gst_element_set_state (pipeline, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_FAILURE) {
g_printerr ("Can't set pipelien to READY\n");
gst_object_unref (pipeline);
return -1;
}
probe = GST_PROPERTY_PROBE (sink);
if (!probe) {
g_printerr ("Can't probe sink\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return -1;
}
arr =
gst_property_probe_probe_and_get_values_name (probe,
"autopaint-colorkey");
if (!arr || !arr->n_values) {
g_printerr ("Can't disable autopaint-colorkey property\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return -1;
}
if (arr)
g_value_array_free (arr);
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_set_sync_handler (bus, (GstBusSyncHandler) bus_sync_handler,
pipeline);
gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
g_signal_connect (bus, "message::state-changed",
G_CALLBACK (msg_state_changed), pipeline);
gst_object_unref (bus);
/* prepare the ui */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (G_OBJECT (window), "delete-event",
G_CALLBACK (window_closed), (gpointer) pipeline);
gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);
video_window = gtk_drawing_area_new ();
g_signal_connect (G_OBJECT (video_window), "configure-event",
G_CALLBACK (handle_resize_cb), NULL);
g_signal_connect (G_OBJECT (video_window), "expose-event",
G_CALLBACK (handle_expose_cb), NULL);
gtk_widget_set_double_buffered (video_window, FALSE);
gtk_container_add (GTK_CONTAINER (window), video_window);
/* show the gui and play */
gtk_widget_show_all (window);
sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
if (sret == GST_STATE_CHANGE_FAILURE) {
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
return -1;
}
gtk_main ();
gst_object_unref (pipeline);
return 0;
}