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media-gstreamer: Provide fallback mode for playback

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Make the "gl-context" property of the GstGLSink readable as well so that
we can query whether the GstGLContext sharing really succeeded.  If it
did, then we proceed to playback our video using the glimagesink as we
did before.  If it didn't, throw out the GtkGstSink we were creating, and
re-create the GtkGstSink without the "gl-context" property, meaning that
we won't be using the glimagesink in this case.
This commit is contained in:
Chun-wei Fan 2021-05-24 16:24:39 +08:00
parent ccdec5da77
commit 16f307b305
2 changed files with 44 additions and 16 deletions
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29
modules/media/gtkgstpaintable.c
View File

@ -117,20 +117,39 @@ gtk_gst_paintable_video_renderer_create_video_sink (GstPlayerVideoRenderer *rend
{
GtkGstPaintable *self = GTK_GST_PAINTABLE (renderer);
GstElement *sink, *glsinkbin;
GdkGLContext *ctx;
sink = g_object_new (GTK_TYPE_GST_SINK,
"paintable", self,
"gl-context", self->context,
NULL);
if (self->context == NULL)
return sink;
if (self->context != NULL)
g_object_get (GTK_GST_SINK (sink), "gl-context", &ctx, NULL);
glsinkbin = gst_element_factory_make ("glsinkbin", NULL);
if (self->context != NULL && ctx != NULL)
{
glsinkbin = gst_element_factory_make ("glsinkbin", NULL);
g_object_set (glsinkbin, "sink", sink, NULL);
g_object_set (glsinkbin, "sink", sink, NULL);
g_object_unref (ctx);
return glsinkbin;
return glsinkbin;
}
else
{
if (self->context != NULL)
{
g_warning ("GstGL context creation failed, falling back to non-GL playback");
g_object_unref (sink);
sink = g_object_new (GTK_TYPE_GST_SINK,
"paintable", self,
NULL);
}
return sink;
}
}
static void

31
modules/media/gtkgstsink.c
View File

@ -417,7 +417,7 @@ check_win32_gst_gl_api (GdkGLContext *ctx,
#define REACTIVATE_WGL_CONTEXT(ctx)
#endif
static void
static gboolean
gtk_gst_sink_initialize_gl (GtkGstSink *self)
{
GdkDisplay *display;
@ -425,6 +425,7 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
GstGLPlatform platform = GST_GL_PLATFORM_NONE;
GstGLAPI gl_api = GST_GL_API_NONE;
guintptr gl_handle = 0;
gboolean succeeded = FALSE;
display = gdk_gl_context_get_display (self->gdk_context);
@ -465,7 +466,7 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
else
{
GST_ERROR_OBJECT (self, "Failed to get handle from GdkGLContext");
return;
return FALSE;
}
}
else
@ -491,7 +492,7 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
else
{
GST_ERROR_OBJECT (self, "Failed to get handle from GdkGLContext, not using Wayland EGL");
return;
return FALSE;
}
}
else
@ -522,10 +523,12 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
#ifdef HAVE_GST_GL_DISPLAY_NEW_WITH_TYPE
self->gst_display = gst_gl_display_new_with_type (GST_GL_DISPLAY_TYPE_WIN32);
#else
#if GST_GL_HAVE_PLATFORM_EGL
g_message ("If media fails to play, set the envvar `GST_DEBUG=1`, and if GstGL context creation fails");
g_message ("due to \"Couldn't create GL context: Cannot share context with non-EGL context\",");
g_message ("set in the environment `GST_GL_PLATFORM=wgl` and `GST_GL_WINDOW=win32`,");
g_message ("and restart the GTK application");
#endif
self->gst_display = gst_gl_display_new ();
#endif
@ -545,14 +548,14 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
else
{
GST_ERROR_OBJECT (self, "Failed to get handle from GdkGLContext, not using %s", gl_type);
return;
return FALSE;
}
}
else
#endif
{
GST_INFO_OBJECT (self, "Unsupported GDK display %s for GL", G_OBJECT_TYPE_NAME (display));
return;
return FALSE;
}
g_assert (self->gst_app_context != NULL);
@ -565,8 +568,8 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
g_clear_error (&error);
g_clear_object (&self->gst_app_context);
g_clear_object (&self->gst_display);
HANDLE_EXTERNAL_WGL_MAKE_CURRENT (self->gdk_context);;
return;
HANDLE_EXTERNAL_WGL_MAKE_CURRENT (self->gdk_context);
return FALSE;
}
else
{
@ -574,7 +577,9 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
gst_gl_context_activate (self->gst_app_context, FALSE);
}
if (!gst_gl_display_create_context (self->gst_display, self->gst_app_context, &self->gst_context, &error))
succeeded = gst_gl_display_create_context (self->gst_display, self->gst_app_context, &self->gst_context, &error);
if (!succeeded)
{
GST_ERROR_OBJECT (self, "Couldn't create GL context: %s", error->message);
g_error_free (error);
@ -584,6 +589,7 @@ gtk_gst_sink_initialize_gl (GtkGstSink *self)
HANDLE_EXTERNAL_WGL_MAKE_CURRENT (self->gdk_context);
REACTIVATE_WGL_CONTEXT (self->gdk_context);
return succeeded;
}
static void
@ -605,8 +611,8 @@ gtk_gst_sink_set_property (GObject *object,
case PROP_GL_CONTEXT:
self->gdk_context = g_value_dup_object (value);
if (self->gdk_context != NULL)
gtk_gst_sink_initialize_gl (self);
if (self->gdk_context != NULL && !gtk_gst_sink_initialize_gl (self))
g_clear_object (&self->gdk_context);
break;
default:
@ -628,6 +634,9 @@ gtk_gst_sink_get_property (GObject *object,
case PROP_PAINTABLE:
g_value_set_object (value, self->paintable);
break;
case PROP_GL_CONTEXT:
g_value_set_object (value, self->gdk_context);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -690,7 +699,7 @@ gtk_gst_sink_class_init (GtkGstSinkClass * klass)
P_("gl-context"),
P_("GL context to use for rendering"),
GDK_TYPE_GL_CONTEXT,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, N_PROPS, properties);