[gtk/media-caps] media: Be more specific in our caps

[Matthias Clasen <matthiasc src gnome org>]

commit 532b8c71a81702ec336f7ff0a78f3679e83f1efb
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 5 09:21:01 2021 -0500

    media: Be more specific in our caps
    
    We can only handle 2D textures, so tell gstreamer
    about that.

 modules/media/gtkgstsink.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/modules/media/gtkgstsink.c b/modules/media/gtkgstsink.c
index 43a83713e0..1fb6719ee4 100644
--- a/modules/media/gtkgstsink.c
+++ b/modules/media/gtkgstsink.c
@@ -49,13 +49,18 @@ GST_DEBUG_CATEGORY (gtk_debug_gst_sink);
 #define FORMATS "{ BGRA, ARGB, RGBA, ABGR, RGB, BGR }"
 
 #define NOGL_CAPS GST_VIDEO_CAPS_MAKE (FORMATS)
-#define GL_CAPS GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_GL_MEMORY, "RGBA")
 
 static GstStaticPadTemplate gtk_gst_sink_template =
 GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GL_CAPS "; " NOGL_CAPS)
+    GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
+                     "format = (string) RGBA, "
+                     "width = " GST_VIDEO_SIZE_RANGE ", "
+                     "height = " GST_VIDEO_SIZE_RANGE ", "
+                     "framerate = " GST_VIDEO_FPS_RANGE ", "
+                     "texture-target = (string) 2D"
+                     "; " NOGL_CAPS)
     );
 
 G_DEFINE_TYPE_WITH_CODE (GtkGstSink, gtk_gst_sink,