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gtkgl: Also try retrieving an EGL context from Gdk with X11

Browse source 
Some embedded platforms will use EGL instead of GLX within the X11
ecosystem.
This commit is contained in:
Matthew Waters 2019-03-05 15:26:45 +11:00
parent 4f3dda36b4
commit 7f95a809e9
2 changed files with 47 additions and 16 deletions
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10
ext/gtk/gstgtkglsink.c
View file

@ -156,15 +156,21 @@ gst_gtk_gl_sink_start (GstBaseSink * bsink)
gtk_sink);
_size_changed_cb (GTK_WIDGET (gst_widget), NULL, gtk_sink);
if (!gtk_gst_gl_widget_init_winsys (gst_widget))
if (!gtk_gst_gl_widget_init_winsys (gst_widget)) {
GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
"Failed to initialize OpenGL with Gtk"), (NULL));
return FALSE;
}
gtk_sink->display = gtk_gst_gl_widget_get_display (gst_widget);
gtk_sink->context = gtk_gst_gl_widget_get_context (gst_widget);
gtk_sink->gtk_context = gtk_gst_gl_widget_get_gtk_context (gst_widget);
if (!gtk_sink->display || !gtk_sink->context || !gtk_sink->gtk_context)
if (!gtk_sink->display || !gtk_sink->context || !gtk_sink->gtk_context) {
GST_ELEMENT_ERROR (bsink, RESOURCE, NOT_FOUND, ("%s",
"Failed to retrieve OpenGL context from Gtk"), (NULL));
return FALSE;
}
gst_gl_element_propagate_display_context (GST_ELEMENT (bsink),
gtk_sink->display);

53
ext/gtk/gtkgstglwidget.c
View file

@ -29,12 +29,12 @@
#include <gst/gl/gstglfuncs.h>
#include <gst/video/video.h>
#if GST_GL_HAVE_WINDOW_X11 && GST_GL_HAVE_PLATFORM_GLX && defined (GDK_WINDOWING_X11)
#if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
#include <gdk/gdkx.h>
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (GDK_WINDOWING_WAYLAND)
#if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
#include <gdk/gdkwayland.h>
#include <gst/gl/wayland/gstgldisplay_wayland.h>
#endif
@ -78,7 +78,8 @@ static const GLfloat vertices[] = {
G_DEFINE_TYPE_WITH_CODE (GtkGstGLWidget, gtk_gst_gl_widget, GTK_TYPE_GL_AREA,
G_ADD_PRIVATE (GtkGstGLWidget)
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "gtkgstglwidget", 0,
"Gtk Gst GL Widget"););
"Gtk Gst GL Widget");
);
static void
gtk_gst_gl_widget_bind_buffer (GtkGstGLWidget * gst_widget)
@ -383,13 +384,14 @@ gtk_gst_gl_widget_init (GtkGstGLWidget * gst_widget)
display = gdk_display_get_default ();
#if GST_GL_HAVE_WINDOW_X11 && GST_GL_HAVE_PLATFORM_GLX && defined (GDK_WINDOWING_X11)
if (GDK_IS_X11_DISPLAY (display))
#if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
if (GDK_IS_X11_DISPLAY (display)) {
priv->display = (GstGLDisplay *)
gst_gl_display_x11_new_with_display (gdk_x11_display_get_xdisplay
(display));
}
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (GDK_WINDOWING_WAYLAND)
#if GST_GL_HAVE_WINDOW_WAYLAND && defined (GDK_WINDOWING_WAYLAND)
if (GDK_IS_WAYLAND_DISPLAY (display)) {
struct wl_display *wayland_display =
gdk_wayland_display_get_wl_display (display);
@ -403,6 +405,8 @@ gtk_gst_gl_widget_init (GtkGstGLWidget * gst_widget)
if (!priv->display)
priv->display = gst_gl_display_new ();
GST_INFO ("Created %" GST_PTR_FORMAT, priv->display);
gtk_gl_area_set_has_alpha (GTK_GL_AREA (gst_widget),
!base_widget->ignore_alpha);
}
@ -411,9 +415,9 @@ static void
_get_gl_context (GtkGstGLWidget * gst_widget)
{
GtkGstGLWidgetPrivate *priv = gst_widget->priv;
GstGLPlatform platform;
GstGLAPI gl_api;
guintptr gl_handle;
GstGLPlatform platform = GST_GL_PLATFORM_NONE;
GstGLAPI gl_api = GST_GL_API_NONE;
guintptr gl_handle = 0;
gtk_widget_realize (GTK_WIDGET (gst_widget));
@ -438,15 +442,28 @@ _get_gl_context (GtkGstGLWidget * gst_widget)
gdk_gl_context_make_current (priv->gdk_context);
#if GST_GL_HAVE_WINDOW_X11 && GST_GL_HAVE_PLATFORM_GLX && defined (GDK_WINDOWING_X11)
#if GST_GL_HAVE_WINDOW_X11 && defined (GDK_WINDOWING_X11)
if (GST_IS_GL_DISPLAY_X11 (priv->display)) {
platform = GST_GL_PLATFORM_GLX;
gl_api = gst_gl_context_get_current_gl_api (platform, NULL, NULL);
gl_handle = gst_gl_context_get_current_gl_context (platform);
if (gl_handle)
#if GST_GL_HAVE_PLATFORM_GLX
if (!gl_handle) {
platform = GST_GL_PLATFORM_GLX;
gl_handle = gst_gl_context_get_current_gl_context (platform);
}
#endif
#if GST_GL_HAVE_PLATFORM_EGL
if (!gl_handle) {
platform = GST_GL_PLATFORM_EGL;
gl_handle = gst_gl_context_get_current_gl_context (platform);
}
#endif
if (gl_handle) {
gl_api = gst_gl_context_get_current_gl_api (platform, NULL, NULL);
priv->other_context =
gst_gl_context_new_wrapped (priv->display, gl_handle,
platform, gl_api);
}
}
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (GDK_WINDOWING_WAYLAND)
@ -468,6 +485,8 @@ _get_gl_context (GtkGstGLWidget * gst_widget)
if (priv->other_context) {
GError *error = NULL;
GST_INFO ("Retrieved Gdk OpenGL context %" GST_PTR_FORMAT,
priv->other_context);
gst_gl_context_activate (priv->other_context, TRUE);
if (!gst_gl_context_fill_info (priv->other_context, &error)) {
GST_ERROR ("failed to retrieve gdk context info: %s", error->message);
@ -477,6 +496,8 @@ _get_gl_context (GtkGstGLWidget * gst_widget)
} else {
gst_gl_context_activate (priv->other_context, FALSE);
}
} else {
GST_WARNING ("Could not retrieve Gdk OpenGL context");
}
}
@ -498,6 +519,7 @@ gtk_gst_gl_widget_init_winsys (GtkGstGLWidget * gst_widget)
GTK_GST_BASE_WIDGET_LOCK (gst_widget);
if (priv->display && priv->gdk_context && priv->other_context) {
GST_TRACE ("have already initialized contexts");
GTK_GST_BASE_WIDGET_UNLOCK (gst_widget);
return TRUE;
}
@ -509,6 +531,7 @@ gtk_gst_gl_widget_init_winsys (GtkGstGLWidget * gst_widget)
}
if (!GST_IS_GL_CONTEXT (priv->other_context)) {
GST_FIXME ("Could not retrieve Gdk OpenGL context");
GTK_GST_BASE_WIDGET_UNLOCK (gst_widget);
return FALSE;
}
@ -516,6 +539,8 @@ gtk_gst_gl_widget_init_winsys (GtkGstGLWidget * gst_widget)
GST_OBJECT_LOCK (priv->display);
if (!gst_gl_display_create_context (priv->display, priv->other_context,
&priv->context, &error)) {
GST_WARNING ("Could not create OpenGL context: %s",
error ? error->message : "Unknown");
g_clear_error (&error);
GST_OBJECT_UNLOCK (priv->display);
GTK_GST_BASE_WIDGET_UNLOCK (gst_widget);