gstreamer/tests/examples/clutter/clutteractor.c
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2014-03-15 18:36:33 +01:00

167 lines
5 KiB
C

/*
* GStreamer
* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <X11/Xlib.h>
#include <X11/extensions/Xcomposite.h>
#include <clutter/clutter.h>
#include <clutter/x11/clutter-x11.h>
#include <clutter/glx/clutter-glx.h>
#include <gst/gst.h>
#include <gst/interfaces/xoverlay.h>
#define W 320
#define H 240
struct GstGLClutterActor_
{
Window win;
Window root;
ClutterActor *texture;
ClutterActor *stage;
};
typedef struct GstGLClutterActor_ GstGLClutterActor;
static gboolean
create_actor (GstGLClutterActor * actor)
{
ClutterKnot knot[2];
ClutterTimeline *timeline;
ClutterEffectTemplate *effect_template;
actor->texture = g_object_new (CLUTTER_GLX_TYPE_TEXTURE_PIXMAP,
"window", actor->win, "automatic-updates", TRUE, NULL);
clutter_container_add_actor (CLUTTER_CONTAINER (actor->stage),
actor->texture);
clutter_actor_set_scale (actor->texture, 0.2, 0.2);
clutter_actor_set_opacity (actor->texture, 0);
clutter_actor_show (actor->texture);
timeline =
clutter_timeline_new (120 /* frames */ , 50 /* frames per second. */ );
clutter_timeline_set_loop (timeline, TRUE);
clutter_timeline_start (timeline);
/* Instead of our custom callback,
* we could use a standard callback. For instance, CLUTTER_ALPHA_SINE_INC.
*/
effect_template =
clutter_effect_template_new (timeline, CLUTTER_ALPHA_SINE_INC);
knot[0].x = -10;
knot[0].y = -10;
knot[1].x = 160;
knot[1].y = 120;
// Move the actor along the path:
clutter_effect_path (effect_template, actor->texture, knot,
sizeof (knot) / sizeof (ClutterKnot), NULL, NULL);
clutter_effect_scale (effect_template, actor->texture, 1.0, 1.0, NULL, NULL);
clutter_effect_rotate (effect_template, actor->texture,
CLUTTER_Z_AXIS, 360.0, W / 2.0, H / 2.0, 0.0,
CLUTTER_ROTATE_CW, NULL, NULL);
clutter_effect_rotate (effect_template, actor->texture,
CLUTTER_X_AXIS, 360.0, 0.0, W / 4.0, 0.0, CLUTTER_ROTATE_CW, NULL, NULL);
// Also change the actor's opacity while moving it along the path:
// (You would probably want to use a different ClutterEffectTemplate,
// so you could use a different alpha callback for this.)
clutter_effect_fade (effect_template, actor->texture, 255, NULL, NULL);
g_object_unref (effect_template);
g_object_unref (timeline);
return FALSE;
}
static GstBusSyncReply
create_window (GstBus * bus, GstMessage * message, gpointer data)
{
GstGLClutterActor *actor = (GstGLClutterActor *) data;
// ignore anything but 'prepare-xwindow-id' element messages
if (GST_MESSAGE_TYPE (message) != GST_MESSAGE_ELEMENT)
return GST_BUS_PASS;
if (!gst_structure_has_name (message->structure, "prepare-xwindow-id"))
return GST_BUS_PASS;
g_debug ("CREATING WINDOW");
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (GST_MESSAGE_SRC (message)),
actor->win);
clutter_threads_add_idle ((GSourceFunc) create_actor, actor);
gst_message_unref (message);
return GST_BUS_DROP;
}
int
main (int argc, char *argv[])
{
GstPipeline *pipeline;
GstBus *bus;
ClutterActor *stage;
GstGLClutterActor *actor;
Display *disp;
Window stage_win;
clutter_init (&argc, &argv);
gst_init (&argc, &argv);
disp = clutter_x11_get_default_display ();
if (!clutter_x11_has_composite_extension ()) {
g_error ("XComposite extension missing");
}
stage = clutter_stage_get_default ();
// clutter_actor_set_size (CLUTTER_ACTOR (stage), W*3+2, H);
stage_win = clutter_x11_get_stage_window (CLUTTER_STAGE (stage));
actor = g_new0 (GstGLClutterActor, 1);
actor->stage = stage;
actor->win = XCreateSimpleWindow (disp, stage_win, 0, 0, W, H, 0, 0, 0);
XCompositeRedirectWindow (disp, actor->win, CompositeRedirectManual);
XMapRaised (disp, actor->win);
XSync (disp, FALSE);
pipeline =
GST_PIPELINE (gst_parse_launch
("videotestsrc ! video/x-raw-rgb, width=320, height=240, framerate=(fraction)30/1 ! "
"glupload ! gleffects effect=twirl ! glimagesink", NULL));
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_set_sync_handler (bus, (GstBusSyncHandler) create_window, actor);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
clutter_actor_show_all (stage);
clutter_main ();
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
g_object_unref (pipeline);
return 0;
}