3 * Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
27 #include "gtkgstglwidget.h"
28 #include <gst/video/video.h>
30 #if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
32 #include <gst/gl/x11/gstgldisplay_x11.h>
33 #include <gst/gl/x11/gstglcontext_glx.h>
36 #if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
37 #include <gdk/gdkwayland.h>
38 #include <gst/gl/wayland/gstgldisplay_wayland.h>
42 * SECTION:gtkgstglwidget
43 * @short_description: a #GtkGLArea that renders GStreamer video #GstBuffers
44 * @see_also: #GtkGLArea, #GstBuffer
46 * #GtkGstGLWidget is an #GtkWidget that renders GStreamer video buffers.
49 #define GST_CAT_DEFAULT gtk_gst_gl_widget_debug
50 GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
52 G_DEFINE_TYPE_WITH_CODE (GtkGstGLWidget, gtk_gst_gl_widget, GTK_TYPE_GL_AREA,
53 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "gtkgstglwidget", 0,
54 "Gtk Gst GL Widget"););
56 #define GTK_GST_GL_WIDGET_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
57 GTK_TYPE_GST_GL_WIDGET, GtkGstGLWidgetPrivate))
59 #define DEFAULT_FORCE_ASPECT_RATIO TRUE
60 #define DEFAULT_PAR_N 0
61 #define DEFAULT_PAR_D 1
66 PROP_FORCE_ASPECT_RATIO,
67 PROP_PIXEL_ASPECT_RATIO,
70 struct _GtkGstGLWidgetPrivate
75 gboolean force_aspect_ratio;
89 GstGLDisplay *display;
90 GdkGLContext *gdk_context;
91 GstGLContext *other_context;
92 GstGLContext *context;
103 gtk_gst_gl_widget_get_preferred_width (GtkWidget * widget, gint * min,
106 GtkGstGLWidget *gst_widget = (GtkGstGLWidget *) widget;
107 gint video_width = GST_VIDEO_INFO_WIDTH (&gst_widget->priv->v_info);
109 if (!gst_widget->priv->negotiated)
115 *natural = video_width;
119 gtk_gst_gl_widget_get_preferred_height (GtkWidget * widget, gint * min,
122 GtkGstGLWidget *gst_widget = (GtkGstGLWidget *) widget;
123 gint video_height = GST_VIDEO_INFO_HEIGHT (&gst_widget->priv->v_info);
125 if (!gst_widget->priv->negotiated)
131 *natural = video_height;
134 static const GLfloat vertices[] = {
135 1.0f, 1.0f, 0.0f, 1.0f, 0.0f,
136 -1.0f, 1.0f, 0.0f, 0.0f, 0.0f,
137 -1.0f, -1.0f, 0.0f, 0.0f, 1.0f,
138 1.0f, -1.0f, 0.0f, 1.0f, 1.0f
142 gtk_gst_gl_widget_bind_buffer (GtkGstGLWidget * gst_widget)
144 const GstGLFuncs *gl = gst_widget->priv->context->gl_vtable;
146 gl->BindBuffer (GL_ARRAY_BUFFER, gst_widget->priv->vertex_buffer);
148 /* Load the vertex position */
149 gl->VertexAttribPointer (gst_widget->priv->attr_position, 3, GL_FLOAT,
150 GL_FALSE, 5 * sizeof (GLfloat), (void *) 0);
152 /* Load the texture coordinate */
153 gl->VertexAttribPointer (gst_widget->priv->attr_texture, 2, GL_FLOAT,
154 GL_FALSE, 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat)));
156 gl->EnableVertexAttribArray (gst_widget->priv->attr_position);
157 gl->EnableVertexAttribArray (gst_widget->priv->attr_texture);
161 gtk_gst_gl_widget_unbind_buffer (GtkGstGLWidget * gst_widget)
163 const GstGLFuncs *gl = gst_widget->priv->context->gl_vtable;
165 gl->BindBuffer (GL_ARRAY_BUFFER, 0);
167 gl->DisableVertexAttribArray (gst_widget->priv->attr_position);
168 gl->DisableVertexAttribArray (gst_widget->priv->attr_texture);
172 gtk_gst_gl_widget_init_redisplay (GtkGstGLWidget * gst_widget)
174 const GstGLFuncs *gl = gst_widget->priv->context->gl_vtable;
176 gst_widget->priv->shader = gst_gl_shader_new (gst_widget->priv->context);
178 gst_gl_shader_compile_with_default_vf_and_check
179 (gst_widget->priv->shader, &gst_widget->priv->attr_position,
180 &gst_widget->priv->attr_texture);
182 if (gl->GenVertexArrays) {
183 gl->GenVertexArrays (1, &gst_widget->priv->vao);
184 gl->BindVertexArray (gst_widget->priv->vao);
187 gl->GenBuffers (1, &gst_widget->priv->vertex_buffer);
188 gl->BindBuffer (GL_ARRAY_BUFFER, gst_widget->priv->vertex_buffer);
189 gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices,
192 if (gl->GenVertexArrays) {
193 gtk_gst_gl_widget_bind_buffer (gst_widget);
194 gl->BindVertexArray (0);
197 gl->BindBuffer (GL_ARRAY_BUFFER, 0);
199 gst_widget->priv->initted = TRUE;
203 _redraw_texture (GtkGstGLWidget * gst_widget, guint tex)
205 const GstGLFuncs *gl = gst_widget->priv->context->gl_vtable;
206 GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
208 if (gst_widget->priv->force_aspect_ratio) {
209 GstVideoRectangle src, dst, result;
210 gint gtk_viewport[4];
212 gl->ClearColor (0.0, 0.0, 0.0, 0.0);
213 gl->Clear (GL_COLOR_BUFFER_BIT);
215 gl->GetIntegerv (GL_VIEWPORT, gtk_viewport);
219 src.w = gst_widget->priv->display_width;
220 src.h = gst_widget->priv->display_height;
222 dst.x = gtk_viewport[0];
223 dst.y = gtk_viewport[1];
224 dst.w = gtk_viewport[2];
225 dst.h = gtk_viewport[3];
227 gst_video_sink_center_rect (src, dst, &result, TRUE);
229 gl->Viewport (result.x, result.y, result.w, result.h);
232 gst_gl_shader_use (gst_widget->priv->shader);
234 if (gl->BindVertexArray)
235 gl->BindVertexArray (gst_widget->priv->vao);
237 gtk_gst_gl_widget_bind_buffer (gst_widget);
239 gl->ActiveTexture (GL_TEXTURE0);
240 gl->BindTexture (GL_TEXTURE_2D, tex);
241 gst_gl_shader_set_uniform_1i (gst_widget->priv->shader, "tex", 0);
243 gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
245 if (gl->BindVertexArray)
246 gl->BindVertexArray (0);
248 gtk_gst_gl_widget_unbind_buffer (gst_widget);
250 gl->BindTexture (GL_TEXTURE_2D, 0);
254 gtk_gst_gl_widget_render (GtkGLArea * widget, GdkGLContext * context)
256 GtkGstGLWidget *gst_widget = (GtkGstGLWidget *) widget;
258 g_mutex_lock (&gst_widget->priv->lock);
260 if (!gst_widget->priv->initted && gst_widget->priv->context)
261 gtk_gst_gl_widget_init_redisplay (gst_widget);
263 if (gst_widget->priv->initted && gst_widget->priv->negotiated
264 && gst_widget->priv->buffer) {
265 GST_DEBUG ("rendering buffer %p with gdk context %p",
266 gst_widget->priv->buffer, context);
268 gst_gl_context_activate (gst_widget->priv->other_context, TRUE);
270 if (gst_widget->priv->new_buffer || gst_widget->priv->current_tex == 0) {
271 GstVideoFrame gl_frame;
272 GstGLSyncMeta *sync_meta;
274 if (!gst_video_frame_map (&gl_frame, &gst_widget->priv->v_info,
275 gst_widget->priv->buffer, GST_MAP_READ | GST_MAP_GL)) {
279 sync_meta = gst_buffer_get_gl_sync_meta (gst_widget->priv->buffer);
281 gst_gl_sync_meta_set_sync_point (sync_meta, gst_widget->priv->context);
282 gst_gl_sync_meta_wait (sync_meta, gst_widget->priv->other_context);
285 gst_widget->priv->current_tex = *(guint *) gl_frame.data[0];
287 gst_video_frame_unmap (&gl_frame);
290 _redraw_texture (gst_widget, gst_widget->priv->current_tex);
291 gst_widget->priv->new_buffer = FALSE;
294 /* FIXME: nothing to display */
295 glClearColor (0.0, 0.0, 0.0, 0.0);
296 glClear (GL_COLOR_BUFFER_BIT);
299 if (gst_widget->priv->other_context)
300 gst_gl_context_activate (gst_widget->priv->other_context, FALSE);
302 g_mutex_unlock (&gst_widget->priv->lock);
306 typedef void (*ThreadFunc) (gpointer data);
308 struct invoke_context
318 _invoke_func (struct invoke_context *info)
320 g_mutex_lock (&info->lock);
321 info->func (info->data);
323 g_cond_signal (&info->cond);
324 g_mutex_unlock (&info->lock);
326 return G_SOURCE_REMOVE;
330 _invoke_on_main (ThreadFunc func, gpointer data)
332 GMainContext *main_context = g_main_context_default ();
333 struct invoke_context info;
335 g_mutex_init (&info.lock);
336 g_cond_init (&info.cond);
341 g_main_context_invoke (main_context, (GSourceFunc) _invoke_func, &info);
343 g_mutex_lock (&info.lock);
345 g_cond_wait (&info.cond, &info.lock);
346 g_mutex_unlock (&info.lock);
348 g_mutex_clear (&info.lock);
349 g_cond_clear (&info.cond);
353 _reset_gl (GtkGstGLWidget * gst_widget)
355 const GstGLFuncs *gl = gst_widget->priv->other_context->gl_vtable;
357 if (!gst_widget->priv->gdk_context)
358 gst_widget->priv->gdk_context =
359 gtk_gl_area_get_context (GTK_GL_AREA (gst_widget));
360 if (gst_widget->priv->gdk_context == NULL)
363 gdk_gl_context_make_current (gst_widget->priv->gdk_context);
364 gst_gl_context_activate (gst_widget->priv->other_context, TRUE);
366 if (gst_widget->priv->vao) {
367 gl->DeleteVertexArrays (1, &gst_widget->priv->vao);
368 gst_widget->priv->vao = 0;
371 if (gst_widget->priv->vertex_buffer) {
372 gl->DeleteBuffers (1, &gst_widget->priv->vertex_buffer);
373 gst_widget->priv->vertex_buffer = 0;
376 if (gst_widget->priv->upload) {
377 gst_object_unref (gst_widget->priv->upload);
378 gst_widget->priv->upload = NULL;
381 if (gst_widget->priv->shader) {
382 gst_object_unref (gst_widget->priv->shader);
383 gst_widget->priv->shader = NULL;
386 gst_gl_context_activate (gst_widget->priv->other_context, FALSE);
388 gst_object_unref (gst_widget->priv->other_context);
389 gst_widget->priv->other_context = NULL;
391 gdk_gl_context_clear_current ();
393 g_object_unref (gst_widget->priv->gdk_context);
394 gst_widget->priv->gdk_context = NULL;
398 _reset (GtkGstGLWidget * gst_widget)
400 gst_buffer_replace (&gst_widget->priv->buffer, NULL);
402 gst_caps_replace (&gst_widget->priv->caps, NULL);
403 gst_caps_replace (&gst_widget->priv->gl_caps, NULL);
405 gst_widget->priv->negotiated = FALSE;
406 gst_widget->priv->initted = FALSE;
407 gst_widget->priv->vao = 0;
408 gst_widget->priv->vertex_buffer = 0;
409 gst_widget->priv->attr_position = 0;
410 gst_widget->priv->attr_texture = 0;
411 gst_widget->priv->current_tex = 0;
412 gst_widget->priv->new_buffer = TRUE;
416 gtk_gst_gl_widget_finalize (GObject * object)
418 GtkGstGLWidget *widget = GTK_GST_GL_WIDGET_CAST (object);
420 g_mutex_clear (&widget->priv->lock);
424 if (widget->priv->other_context) {
425 _invoke_on_main ((ThreadFunc) _reset_gl, widget);
428 if (widget->priv->context) {
429 gst_object_unref (widget->priv->context);
430 widget->priv->context = NULL;
433 if (widget->priv->display) {
434 gst_object_unref (widget->priv->display);
435 widget->priv->display = NULL;
438 G_OBJECT_CLASS (gtk_gst_gl_widget_parent_class)->finalize (object);
442 gtk_gst_gl_widget_set_property (GObject * object, guint prop_id,
443 const GValue * value, GParamSpec * pspec)
445 GtkGstGLWidget *gtk_widget = GTK_GST_GL_WIDGET (object);
448 case PROP_FORCE_ASPECT_RATIO:
449 gtk_widget->priv->force_aspect_ratio = g_value_get_boolean (value);
451 case PROP_PIXEL_ASPECT_RATIO:
452 gtk_widget->priv->par_n = gst_value_get_fraction_numerator (value);
453 gtk_widget->priv->par_d = gst_value_get_fraction_denominator (value);
456 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
462 gtk_gst_gl_widget_get_property (GObject * object, guint prop_id, GValue * value,
465 GtkGstGLWidget *gtk_widget = GTK_GST_GL_WIDGET (object);
468 case PROP_FORCE_ASPECT_RATIO:
469 g_value_set_boolean (value, gtk_widget->priv->force_aspect_ratio);
471 case PROP_PIXEL_ASPECT_RATIO:
472 gst_value_set_fraction (value, gtk_widget->priv->par_n,
473 gtk_widget->priv->par_d);
476 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
482 gtk_gst_gl_widget_class_init (GtkGstGLWidgetClass * klass)
484 GObjectClass *gobject_klass = (GObjectClass *) klass;
485 GtkWidgetClass *widget_klass = (GtkWidgetClass *) klass;
486 GtkGLAreaClass *gl_widget_klass = (GtkGLAreaClass *) klass;
488 g_type_class_add_private (klass, sizeof (GtkGstGLWidgetPrivate));
490 gobject_klass->set_property = gtk_gst_gl_widget_set_property;
491 gobject_klass->get_property = gtk_gst_gl_widget_get_property;
492 gobject_klass->finalize = gtk_gst_gl_widget_finalize;
494 g_object_class_install_property (gobject_klass, PROP_FORCE_ASPECT_RATIO,
495 g_param_spec_boolean ("force-aspect-ratio",
496 "Force aspect ratio",
497 "When enabled, scaling will respect original aspect ratio",
498 DEFAULT_FORCE_ASPECT_RATIO,
499 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
501 g_object_class_install_property (gobject_klass, PROP_PIXEL_ASPECT_RATIO,
502 gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
503 "The pixel aspect ratio of the device", DEFAULT_PAR_N, DEFAULT_PAR_D,
504 G_MAXINT, 1, 1, 1, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
506 gl_widget_klass->render = gtk_gst_gl_widget_render;
508 widget_klass->get_preferred_width = gtk_gst_gl_widget_get_preferred_width;
509 widget_klass->get_preferred_height = gtk_gst_gl_widget_get_preferred_height;
513 gtk_gst_gl_widget_init (GtkGstGLWidget * widget)
517 widget->priv = GTK_GST_GL_WIDGET_GET_PRIVATE (widget);
519 widget->priv->force_aspect_ratio = DEFAULT_FORCE_ASPECT_RATIO;
520 widget->priv->par_n = DEFAULT_PAR_N;
521 widget->priv->par_d = DEFAULT_PAR_D;
523 g_mutex_init (&widget->priv->lock);
525 display = gdk_display_get_default ();
527 #if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
528 if (GDK_IS_X11_DISPLAY (display))
529 widget->priv->display = (GstGLDisplay *)
530 gst_gl_display_x11_new_with_display (gdk_x11_display_get_xdisplay
533 #if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
534 if (GDK_IS_WAYLAND_DISPLAY (display)) {
535 struct wl_display *wayland_display =
536 gdk_wayland_display_get_wl_display (display);
537 widget->priv->display = (GstGLDisplay *)
538 gst_gl_display_wayland_new_with_display (wayland_display);
544 if (!widget->priv->display)
545 widget->priv->display = gst_gl_display_new ();
547 gtk_gl_area_set_has_alpha ((GtkGLArea *) widget, FALSE);
551 gtk_gst_gl_widget_new (void)
553 return (GtkWidget *) g_object_new (GTK_TYPE_GST_GL_WIDGET, NULL);
557 _queue_draw (GtkGstGLWidget * widget)
559 gtk_widget_queue_draw (GTK_WIDGET (widget));
561 return G_SOURCE_REMOVE;
565 gtk_gst_gl_widget_set_buffer (GtkGstGLWidget * widget, GstBuffer * buffer)
567 GMainContext *main_context = g_main_context_default ();
569 g_return_if_fail (GTK_IS_GST_GL_WIDGET (widget));
570 g_return_if_fail (widget->priv->negotiated);
572 g_mutex_lock (&widget->priv->lock);
574 gst_buffer_replace (&widget->priv->buffer, buffer);
575 widget->priv->new_buffer = TRUE;
577 g_mutex_unlock (&widget->priv->lock);
579 g_main_context_invoke (main_context, (GSourceFunc) _queue_draw, widget);
583 _get_gl_context (GtkGstGLWidget * gst_widget)
585 GstGLPlatform platform;
589 gtk_widget_realize (GTK_WIDGET (gst_widget));
591 if (gst_widget->priv->gdk_context)
592 g_object_unref (gst_widget->priv->gdk_context);
593 gst_widget->priv->gdk_context =
594 gtk_gl_area_get_context (GTK_GL_AREA (gst_widget));
595 if (gst_widget->priv->gdk_context == NULL) {
596 g_assert_not_reached ();
600 g_object_ref (gst_widget->priv->gdk_context);
602 gdk_gl_context_make_current (gst_widget->priv->gdk_context);
604 #if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
605 if (GST_IS_GL_DISPLAY_X11 (gst_widget->priv->display)) {
606 platform = GST_GL_PLATFORM_GLX;
607 gl_api = gst_gl_context_get_current_gl_api (NULL, NULL);
608 gl_handle = gst_gl_context_get_current_gl_context (platform);
610 gst_widget->priv->other_context =
611 gst_gl_context_new_wrapped (gst_widget->priv->display, gl_handle,
615 #if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
616 if (GST_IS_GL_DISPLAY_WAYLAND (gst_widget->priv->display)) {
617 platform = GST_GL_PLATFORM_EGL;
618 gl_api = gst_gl_context_get_current_gl_api (NULL, NULL);
619 gl_handle = gst_gl_context_get_current_gl_context (platform);
621 gst_widget->priv->other_context =
622 gst_gl_context_new_wrapped (gst_widget->priv->display, gl_handle,
631 if (gst_widget->priv->other_context) {
632 GError *error = NULL;
634 gst_gl_context_activate (gst_widget->priv->other_context, TRUE);
635 if (!gst_gl_context_fill_info (gst_widget->priv->other_context, &error)) {
636 GST_ERROR ("failed to retreive gdk context info: %s", error->message);
637 g_object_unref (gst_widget->priv->other_context);
638 gst_widget->priv->other_context = NULL;
640 gst_gl_context_activate (gst_widget->priv->other_context, FALSE);
646 _queue_resize (GtkGstGLWidget * widget)
648 gtk_widget_queue_resize (GTK_WIDGET (widget));
650 return G_SOURCE_REMOVE;
654 gtk_gst_gl_widget_init_winsys (GtkGstGLWidget * widget)
656 g_return_val_if_fail (GTK_IS_GST_GL_WIDGET (widget), FALSE);
658 g_mutex_lock (&widget->priv->lock);
660 if (widget->priv->display && widget->priv->gdk_context
661 && widget->priv->other_context) {
662 g_mutex_unlock (&widget->priv->lock);
666 if (!widget->priv->other_context) {
667 _invoke_on_main ((ThreadFunc) _get_gl_context, widget);
670 if (!GST_GL_IS_CONTEXT (widget->priv->other_context)) {
671 g_mutex_unlock (&widget->priv->lock);
675 widget->priv->context = gst_gl_context_new (widget->priv->display);
677 if (!widget->priv->context) {
678 g_mutex_unlock (&widget->priv->lock);
682 gst_gl_context_create (widget->priv->context, widget->priv->other_context,
685 g_mutex_unlock (&widget->priv->lock);
690 _calculate_par (GtkGstGLWidget * widget, GstVideoInfo * info)
695 gint display_par_n, display_par_d;
696 guint display_ratio_num, display_ratio_den;
698 width = GST_VIDEO_INFO_WIDTH (info);
699 height = GST_VIDEO_INFO_HEIGHT (info);
701 par_n = GST_VIDEO_INFO_PAR_N (info);
702 par_d = GST_VIDEO_INFO_PAR_D (info);
707 /* get display's PAR */
708 if (widget->priv->par_n != 0 && widget->priv->par_d != 0) {
709 display_par_n = widget->priv->par_n;
710 display_par_d = widget->priv->par_d;
716 ok = gst_video_calculate_display_ratio (&display_ratio_num,
717 &display_ratio_den, width, height, par_n, par_d, display_par_n,
723 GST_LOG ("PAR: %u/%u DAR:%u/%u", par_n, par_d, display_par_n, display_par_d);
725 if (height % display_ratio_den == 0) {
726 GST_DEBUG ("keeping video height");
727 widget->priv->display_width = (guint)
728 gst_util_uint64_scale_int (height, display_ratio_num,
730 widget->priv->display_height = height;
731 } else if (width % display_ratio_num == 0) {
732 GST_DEBUG ("keeping video width");
733 widget->priv->display_width = width;
734 widget->priv->display_height = (guint)
735 gst_util_uint64_scale_int (width, display_ratio_den, display_ratio_num);
737 GST_DEBUG ("approximating while keeping video height");
738 widget->priv->display_width = (guint)
739 gst_util_uint64_scale_int (height, display_ratio_num,
741 widget->priv->display_height = height;
743 GST_DEBUG ("scaling to %dx%d", widget->priv->display_width,
744 widget->priv->display_height);
750 gtk_gst_gl_widget_set_caps (GtkGstGLWidget * widget, GstCaps * caps)
752 GMainContext *main_context = g_main_context_default ();
755 g_return_val_if_fail (GTK_IS_GST_GL_WIDGET (widget), FALSE);
756 g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
757 g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
759 if (widget->priv->caps && gst_caps_is_equal_fixed (widget->priv->caps, caps))
762 if (!gst_video_info_from_caps (&v_info, caps))
765 g_mutex_lock (&widget->priv->lock);
769 gst_caps_replace (&widget->priv->caps, caps);
771 widget->priv->gl_caps = gst_video_info_to_caps (&v_info);
772 gst_caps_set_features (widget->priv->gl_caps, 0,
773 gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY));
775 if (!_calculate_par (widget, &v_info)) {
776 g_mutex_unlock (&widget->priv->lock);
780 widget->priv->v_info = v_info;
781 widget->priv->negotiated = TRUE;
783 g_mutex_unlock (&widget->priv->lock);
785 g_main_context_invoke (main_context, (GSourceFunc) _queue_resize, widget);
791 gtk_gst_gl_widget_get_gtk_context (GtkGstGLWidget * gst_widget)
793 if (!gst_widget->priv->other_context)
796 return gst_object_ref (gst_widget->priv->other_context);
800 gtk_gst_gl_widget_get_context (GtkGstGLWidget * gst_widget)
802 if (!gst_widget->priv->context)
805 return gst_object_ref (gst_widget->priv->context);
809 gtk_gst_gl_widget_get_display (GtkGstGLWidget * gst_widget)
811 if (!gst_widget->priv->display)
814 return gst_object_ref (gst_widget->priv->display);