summaryrefslogtreecommitdiff
path: root/gst-libs/gst/gl/gstglwindow.c
blob: 49ab3cac6c19c7753ba9d9fc1966cadbf4c762d6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
/*
 * GStreamer
 * Copyright (C) 2012 Matthew Waters <ystreet00@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., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

/**
 * SECTION:gstglwindow
 * @short_description: window/surface abstraction
 * @title: GstGLWindow
 * @see_also: #GstGLContext, #GstGLDisplay
 *
 * GstGLWindow represents a window that elements can render into.  A window can
 * either be a user visible window (onscreen) or hidden (offscreen).
 */

#if HAVE_CONFIG_H
# include "config.h"
#endif

#include <gmodule.h>
#include <stdio.h>

#include "gl.h"
#include "gstglwindow.h"

/* FIXME make this work with windowless contexts */

#if GST_GL_HAVE_WINDOW_X11
#include "x11/gstglwindow_x11.h"
#endif
#if GST_GL_HAVE_WINDOW_WIN32
#include "win32/gstglwindow_win32.h"
#endif
#if GST_GL_HAVE_WINDOW_COCOA
#include "cocoa/gstglwindow_cocoa.h"
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
#include "wayland/gstglwindow_wayland_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_ANDROID
#include "android/gstglwindow_android_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_EAGL
#include "eagl/gstglwindow_eagl.h"
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
#include "dispmanx/gstglwindow_dispmanx_egl.h"
#endif

#define USING_OPENGL(display) (display->gl_api & GST_GL_API_OPENGL)
#define USING_OPENGL3(display) (display->gl_api & GST_GL_API_OPENGL3)
#define USING_GLES(display) (display->gl_api & GST_GL_API_GLES)
#define USING_GLES2(display) (display->gl_api & GST_GL_API_GLES2)
#define USING_GLES3(display) (display->gl_api & GST_GL_API_GLES3)

#define GST_CAT_DEFAULT gst_gl_window_debug
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);

#define gst_gl_window_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstGLWindow, gst_gl_window, G_TYPE_OBJECT);

#define GST_GL_WINDOW_GET_PRIVATE(o) \
  (G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW, GstGLWindowPrivate))

static void gst_gl_window_default_send_message (GstGLWindow * window,
    GstGLWindowCB callback, gpointer data);

struct _GstGLWindowPrivate
{
  GThread *gl_thread;

  gboolean alive;
};

static void gst_gl_window_finalize (GObject * object);

typedef struct _GstGLDummyWindow
{
  GstGLWindow parent;

  guintptr handle;

  GMainContext *main_context;
  GMainLoop *loop;
} GstGLDummyWindow;

typedef struct _GstGLDummyWindowCass
{
  GstGLWindowClass parent;
} GstGLDummyWindowClass;

GstGLDummyWindow *gst_gl_dummy_window_new (void);

GQuark
gst_gl_window_error_quark (void)
{
  return g_quark_from_static_string ("gst-gl-window-error-quark");
}

static void
gst_gl_window_init (GstGLWindow * window)
{
  window->priv = GST_GL_WINDOW_GET_PRIVATE (window);

  g_mutex_init (&window->lock);
  window->is_drawing = FALSE;

  g_weak_ref_init (&window->context_ref, NULL);
}

static void
gst_gl_window_class_init (GstGLWindowClass * klass)
{
  g_type_class_add_private (klass, sizeof (GstGLWindowPrivate));

  klass->send_message = GST_DEBUG_FUNCPTR (gst_gl_window_default_send_message);

  G_OBJECT_CLASS (klass)->finalize = gst_gl_window_finalize;
}

/**
 * gst_gl_window_new:
 * @display: a #GstGLDisplay
 *
 * Returns: (transfer full): a new #GstGLWindow using @display's connection
 */
GstGLWindow *
gst_gl_window_new (GstGLDisplay * display)
{
  GstGLWindow *window = NULL;
  const gchar *user_choice;
  static volatile gsize _init = 0;

  g_return_val_if_fail (display != NULL, NULL);

  if (g_once_init_enter (&_init)) {
    GST_DEBUG_CATEGORY_INIT (gst_gl_window_debug, "glwindow", 0,
        "glwindow element");
    g_once_init_leave (&_init, 1);
  }

  user_choice = g_getenv ("GST_GL_WINDOW");
  GST_INFO ("creating a window, user choice:%s", user_choice);

#if GST_GL_HAVE_WINDOW_COCOA
  if (!window && (!user_choice || g_strstr_len (user_choice, 5, "cocoa")))
    window = GST_GL_WINDOW (gst_gl_window_cocoa_new ());
#endif
#if GST_GL_HAVE_WINDOW_X11
  if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
    window = GST_GL_WINDOW (gst_gl_window_x11_new (display));
#endif
#if GST_GL_HAVE_WINDOW_WIN32
  if (!window && (!user_choice || g_strstr_len (user_choice, 5, "win32")))
    window = GST_GL_WINDOW (gst_gl_window_win32_new ());
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
  if (!window && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
    window = GST_GL_WINDOW (gst_gl_window_wayland_egl_new ());
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
  if (!window && (!user_choice || g_strstr_len (user_choice, 8, "dispmanx")))
    window = GST_GL_WINDOW (gst_gl_window_dispmanx_egl_new ());
#endif
#if GST_GL_HAVE_WINDOW_ANDROID
  if (!window && (!user_choice || g_strstr_len (user_choice, 7, "android")))
    window = GST_GL_WINDOW (gst_gl_window_android_egl_new ());
#endif
#if GST_GL_HAVE_WINDOW_EAGL
  if (!window && (!user_choice || g_strstr_len (user_choice, 7, "eagl")))
    window = GST_GL_WINDOW (gst_gl_window_eagl_new ());
#endif
  if (!window) {
    /* subclass returned a NULL window */
    GST_WARNING ("Could not create window. user specified %s, creating dummy"
        " window", user_choice ? user_choice : "(null)");

    window = GST_GL_WINDOW (gst_gl_dummy_window_new ());
  }

  window->display = gst_object_ref (display);

  return window;
}

static void
gst_gl_window_finalize (GObject * object)
{
  GstGLWindow *window = GST_GL_WINDOW (object);

  g_weak_ref_clear (&window->context_ref);

  g_mutex_clear (&window->lock);
  gst_object_unref (window->display);

  G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
}

/**
 * gst_gl_window_set_window_handle:
 * @window: a #GstGLWindow
 * @handle: handle to the window
 *
 * Sets the window that this @window should render into.  Some implementations
 * require this to be called with a valid handle before drawing can commence.
 */
void
gst_gl_window_set_window_handle (GstGLWindow * window, guintptr handle)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  g_return_if_fail (handle != 0);
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->set_window_handle != NULL);

  window_class->set_window_handle (window, handle);
}

/**
 * gst_gl_window_draw_unlocked:
 * @window: a #GstGLWindow
 * @width: requested width of the window
 * @height: requested height of the window
 *
 * Redraw the window contents.  Implementations should invoke the draw callback.
 */
void
gst_gl_window_draw_unlocked (GstGLWindow * window, guint width, guint height)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->draw_unlocked != NULL);

  window_class->draw_unlocked (window, width, height);
}

/**
 * gst_gl_window_draw:
 * @window: a #GstGLWindow
 * @width: requested width of the window
 * @height: requested height of the window
 *
 * Redraw the window contents.  Implementations should invoke the draw callback.
 */
void
gst_gl_window_draw (GstGLWindow * window, guint width, guint height)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->draw != NULL);

  /* avoid to overload the drawer */
  if (window->is_drawing) {
    return;
  }

  window_class->draw (window, width, height);
}

/**
 * gst_gl_window_run:
 * @window: a #GstGLWindow
 *
 * Start the execution of the runloop.
 */
void
gst_gl_window_run (GstGLWindow * window)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->run != NULL);

  window->priv->alive = TRUE;
  window_class->run (window);
}

/**
 * gst_gl_window_quit:
 * @window: a #GstGLWindow
 *
 * Quit the runloop's execution.
 */
void
gst_gl_window_quit (GstGLWindow * window)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->quit != NULL);

  GST_GL_WINDOW_LOCK (window);

  window->priv->alive = FALSE;

  window_class->quit (window);

  GST_INFO ("quit sent to gl window loop");

  GST_GL_WINDOW_UNLOCK (window);
}

typedef struct _GstGLSyncMessage
{
  GMutex lock;
  GCond cond;
  gboolean fired;

  GstGLWindowCB callback;
  gpointer data;
} GstGLSyncMessage;

static void
_run_message_sync (GstGLSyncMessage * message)
{
  g_mutex_lock (&message->lock);

  if (message->callback)
    message->callback (message->data);

  message->fired = TRUE;
  g_cond_signal (&message->cond);
  g_mutex_unlock (&message->lock);
}

void
gst_gl_window_default_send_message (GstGLWindow * window,
    GstGLWindowCB callback, gpointer data)
{
  GstGLSyncMessage message;

  message.callback = callback;
  message.data = data;
  message.fired = FALSE;
  g_mutex_init (&message.lock);
  g_cond_init (&message.cond);

  gst_gl_window_send_message_async (window, (GstGLWindowCB) _run_message_sync,
      &message, NULL);

  g_mutex_lock (&message.lock);

  /* block until opengl calls have been executed in the gl thread */
  while (!message.fired)
    g_cond_wait (&message.cond, &message.lock);
  g_mutex_unlock (&message.lock);

  g_mutex_clear (&message.lock);
  g_cond_clear (&message.cond);
}

/**
 * gst_gl_window_send_message:
 * @window: a #GstGLWindow
 * @callback: (scope async): function to invoke
 * @data: (closure): data to invoke @callback with
 *
 * Invoke @callback with data on the window thread.  @callback is guarenteed to
 * have executed when this function returns.
 */
void
gst_gl_window_send_message (GstGLWindow * window, GstGLWindowCB callback,
    gpointer data)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  g_return_if_fail (callback != NULL);
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->send_message != NULL);

  window_class->send_message (window, callback, data);
}

/**
 * gst_gl_window_send_message_async:
 * @window: a #GstGLWindow
 * @callback: (scope async): function to invoke
 * @data: (closure): data to invoke @callback with
 * @destroy: (destroy): called when @data is not needed anymore
 *
 * Invoke @callback with @data on the window thread.  The callback may not
 * have been executed when this function returns.
 */
void
gst_gl_window_send_message_async (GstGLWindow * window, GstGLWindowCB callback,
    gpointer data, GDestroyNotify destroy)
{
  GstGLWindowClass *window_class;

  g_return_if_fail (GST_GL_IS_WINDOW (window));
  g_return_if_fail (callback != NULL);
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_if_fail (window_class->send_message_async != NULL);

  window_class->send_message_async (window, callback, data, destroy);
}

/**
 * gst_gl_window_set_draw_callback:
 * @window: a #GstGLWindow
 * @callback: (scope notified): function to invoke
 * @data: (closure): data to invoke @callback with
 * @destroy_notify: (destroy): called when @data is not needed any more
 *
 * Sets the draw callback called everytime gst_gl_window_draw() is called
 */
void
gst_gl_window_set_draw_callback (GstGLWindow * window, GstGLWindowCB callback,
    gpointer data, GDestroyNotify destroy_notify)
{
  g_return_if_fail (GST_GL_IS_WINDOW (window));

  GST_GL_WINDOW_LOCK (window);

  if (window->draw_notify)
    window->draw_notify (window->draw_data);

  window->draw = callback;
  window->draw_data = data;
  window->draw_notify = destroy_notify;

  GST_GL_WINDOW_UNLOCK (window);
}

/**
 * gst_gl_window_set_resize_callback:
 * @window: a #GstGLWindow
 * @callback: (scope notified): function to invoke
 * @data: (closure): data to invoke @callback with
 * @destroy_notify: (destroy): called when @data is not needed any more
 *
 * Sets the resize callback called everytime a resize of the window occurs.
 */
void
gst_gl_window_set_resize_callback (GstGLWindow * window,
    GstGLWindowResizeCB callback, gpointer data, GDestroyNotify destroy_notify)
{
  g_return_if_fail (GST_GL_IS_WINDOW (window));

  GST_GL_WINDOW_LOCK (window);

  if (window->resize_notify)
    window->resize_notify (window->resize_data);

  window->resize = callback;
  window->resize_data = data;
  window->resize_notify = destroy_notify;

  GST_GL_WINDOW_UNLOCK (window);
}

/**
 * gst_gl_window_set_close_callback:
 * @window: a #GstGLWindow
 * @callback: (scope notified): function to invoke
 * @data: (closure): data to invoke @callback with
 * @destroy_notify: (destroy): called when @data is not needed any more
 *
 * Sets the callback called when the window is about to close.
 */
void
gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
    gpointer data, GDestroyNotify destroy_notify)
{
  g_return_if_fail (GST_GL_IS_WINDOW (window));

  GST_GL_WINDOW_LOCK (window);

  if (window->close_notify)
    window->close_notify (window->close_data);

  window->close = callback;
  window->close_data = data;
  window->close_notify = destroy_notify;

  GST_GL_WINDOW_UNLOCK (window);
}

/**
 * gst_gl_window_is_running:
 * @window: a #GstGLWindow
 *
 * Whether the runloop is running
 */
gboolean
gst_gl_window_is_running (GstGLWindow * window)
{
  return window->priv->alive;
}

/**
 * gst_gl_window_get_display:
 * @window: a #GstGLWindow
 *
 * Returns: the windowing system display handle for this @window
 */
guintptr
gst_gl_window_get_display (GstGLWindow * window)
{
  GstGLWindowClass *window_class;

  g_return_val_if_fail (GST_GL_IS_WINDOW (window), 0);
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_val_if_fail (window_class->get_display != NULL, 0);

  return window_class->get_display (window);
}

/**
 * gst_gl_window_get_window_handle:
 * @window: a #GstGLWindow
 *
 * Returns: the window handle we are currently rendering into
 */
guintptr
gst_gl_window_get_window_handle (GstGLWindow * window)
{
  GstGLWindowClass *window_class;

  g_return_val_if_fail (GST_GL_IS_WINDOW (window), 0);
  window_class = GST_GL_WINDOW_GET_CLASS (window);
  g_return_val_if_fail (window_class->get_window_handle != NULL, 0);

  return window_class->get_window_handle (window);
}

/**
 * gst_gl_window_get_context:
 * @window: a #GstGLWindow
 *
 * Returns: (transfer full): the #GstGLContext associated with this @window
 */
GstGLContext *
gst_gl_window_get_context (GstGLWindow * window)
{
  g_return_val_if_fail (GST_GL_IS_WINDOW (window), NULL);

  return (GstGLContext *) g_weak_ref_get (&window->context_ref);
}

GType gst_gl_dummy_window_get_type (void);

G_DEFINE_TYPE (GstGLDummyWindow, gst_gl_dummy_window, GST_GL_TYPE_WINDOW);

static gboolean
gst_gl_dummy_window_open (GstGLWindow * window, GError ** error)
{
  GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;

  dummy->main_context = g_main_context_new ();
  dummy->loop = g_main_loop_new (dummy->main_context, FALSE);

  return TRUE;
}

static void
gst_gl_dummy_window_close (GstGLWindow * window)
{
  GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;

  g_main_loop_unref (dummy->loop);
  g_main_context_unref (dummy->main_context);
}

static void
gst_gl_dummy_window_quit (GstGLWindow * window)
{
  GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;

  g_main_loop_quit (dummy->loop);
}

static void
gst_gl_dummy_window_run (GstGLWindow * window)
{
  GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;

  g_main_loop_run (dummy->loop);
}

typedef struct _GstGLMessage
{
  GstGLWindowCB callback;
  gpointer data;
  GDestroyNotify destroy;
} GstGLMessage;

static gboolean
_run_message (GstGLMessage * message)
{
  if (message->callback)
    message->callback (message->data);

  if (message->destroy)
    message->destroy (message->data);

  g_slice_free (GstGLMessage, message);

  return FALSE;
}

static void
gst_gl_dummy_window_send_message_async (GstGLWindow * window,
    GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
{
  GstGLDummyWindow *dummy;
  GstGLMessage *message;

  dummy = (GstGLDummyWindow *) window;
  message = g_slice_new (GstGLMessage);

  message->callback = callback;
  message->data = data;
  message->destroy = destroy;

  g_main_context_invoke (dummy->main_context, (GSourceFunc) _run_message,
      message);
}

static void
gst_gl_dummy_window_set_window_handle (GstGLWindow * window, guintptr handle)
{
  GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;

  dummy->handle = handle;
}

static guintptr
gst_gl_dummy_window_get_window_handle (GstGLWindow * window)
{
  GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;

  return (guintptr) dummy->handle;
}

struct draw
{
  GstGLDummyWindow *window;
  guint width, height;
};

static void
draw_cb (gpointer data)
{
  struct draw *draw_data = data;
  GstGLDummyWindow *dummy = draw_data->window;
  GstGLWindow *window = GST_GL_WINDOW (dummy);
  GstGLContext *context = gst_gl_window_get_context (window);
  GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);

  if (window->draw)
    window->draw (window->draw_data);

  context_class->swap_buffers (context);

  gst_object_unref (context);
}

static void
gst_gl_dummy_window_draw (GstGLWindow * window, guint width, guint height)
{
  struct draw draw_data;

  draw_data.window = (GstGLDummyWindow *) window;
  draw_data.width = width;
  draw_data.height = height;

  gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, &draw_data);
}

static guintptr
gst_gl_dummy_window_get_display (GstGLWindow * window)
{
  return 0;
}

static void
gst_gl_dummy_window_class_init (GstGLDummyWindowClass * klass)
{
  GstGLWindowClass *window_class = (GstGLWindowClass *) klass;

  window_class->get_display =
      GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_display);
  window_class->get_window_handle =
      GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_window_handle);
  window_class->set_window_handle =
      GST_DEBUG_FUNCPTR (gst_gl_dummy_window_set_window_handle);
  window_class->draw_unlocked = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
  window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
  window_class->run = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_run);
  window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_quit);
  window_class->send_message_async =
      GST_DEBUG_FUNCPTR (gst_gl_dummy_window_send_message_async);
  window_class->open = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_open);
  window_class->close = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_close);
}

static void
gst_gl_dummy_window_init (GstGLDummyWindow * dummy)
{
  dummy->handle = 0;
}

GstGLDummyWindow *
gst_gl_dummy_window_new (void)
{
  return g_object_new (gst_gl_dummy_window_get_type (), NULL);
}