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 <gst/gst.h>
#include <gst/interfaces/videooverlay.h>
#include <gst/interfaces/propertyprobe.h>
static GtkWidget *video_window = NULL;
static GstElement *sink = NULL;
static gulong embed_xid = 0;
static GdkColor trans_color;
static gboolean trans_color_set = FALSE;
static void
redraw_overlay (GtkWidget * widget)
{
GtkAllocation allocation;
GdkWindow *window = gtk_widget_get_window (widget);
cairo_t *cr;
cr = gdk_cairo_create (window);
gtk_widget_get_allocation (widget, &allocation);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_fill (cr);
if (trans_color_set) {
guint x, y;
guint h = allocation.height * 0.75;
gdk_cairo_set_source_color (cr, &trans_color);
cairo_rectangle (cr, 0, 0, allocation.width, h);
cairo_fill (cr);
for (y = h; y < allocation.height; y++) {
for (x = 0; x < allocation.width; x++) {
if (((x & 1) || (y & 1)) && (x & 1) != (y & 1)) {
cairo_move_to (cr, x, y);
cairo_paint (cr);
}
}
}
}
}
static gboolean
handle_resize_cb (GtkWidget * widget, GdkEventConfigure * event, gpointer data)
{
redraw_overlay (widget);
return FALSE;
}
static gboolean
draw_cb (GtkWidget * widget, cairo_t * cr, gpointer data)
{
redraw_overlay (widget);
return FALSE;
}
static void
realize_cb (GtkWidget * widget, gpointer data)
{
GdkWindow *window = gtk_widget_get_window (widget);
/* This is here just for pedagogical purposes, GDK_WINDOW_XID will call it
* as well */
if (!gdk_window_ensure_native (window))
g_error ("Couldn't create native window needed for GstXOverlay!");
embed_xid = GDK_WINDOW_XID (window);
g_print ("Window realize: video window XID = %lu\n", embed_xid);
}
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) {
trans_color.red = (color & 0xff0000) >> 8;
trans_color.green = (color & 0xff00);
trans_color.blue = (color & 0xff) << 8;
trans_color_set = TRUE;
} else {
trans_color_set = FALSE;
}
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 (widget);
gst_element_set_state (pipeline, GST_STATE_NULL);
gtk_main_quit ();
}
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static gboolean
start_pipeline (gpointer user_data)
{
GstElement *pipeline = GST_ELEMENT (user_data);
GstStateChangeReturn sret;
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);
gtk_main_quit ();
}
return FALSE;
}
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);
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);
#define COLOR_GRAY 0x7F7F7F
g_object_set (G_OBJECT (sink), "autopaint-colorkey", FALSE,
"force-aspect-ratio", TRUE, "draw-borders", FALSE,
"colorkey", COLOR_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 pipeline 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_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), "draw",
G_CALLBACK (draw_cb), NULL);
g_signal_connect (video_window, "realize", G_CALLBACK (realize_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);
/* realize window now so that the video window gets created and we can
* obtain its XID before the pipeline is started up and the videosink
* asks for the XID of the window to render onto */
gtk_widget_realize (window);
/* we should have the XID now */
g_assert (embed_xid != 0);
/* we know what the video sink is in this case (xvimagesink), so we can
* just set it directly here now (instead of waiting for a
* prepare-window-handle element message in a sync bus handler and setting
* it there) */
g_print ("setting XID %lu\n", embed_xid);
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (sink), embed_xid);
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g_idle_add (start_pipeline, pipeline);
gtk_main ();
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gst_object_unref (pipeline);
return 0;
}