va: sort the device queue

If so, the elements will be registered per drm node in order of
renderD128, renderD129, ... etc, an element with constant name will be
registered on renderD128 on a hardware with multiple drm nodes.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1988>

diff --git a/sys/va/gstvadevice.c b/sys/va/gstvadevice.c
index a00293f..0e251e1 100644 (file)
--- a/sys/va/gstvadevice.c
+++ b/sys/va/gstvadevice.c
@@ -55,6 +55,14 @@ gst_va_device_new (GstVaDisplay * display, const gchar * render_device_path)
   return device;
 }
 
+static gint
+compare_device_path (gconstpointer a, gconstpointer b, gpointer user_data)
+{
+  const GstVaDevice *pa = a, *pb = b;
+
+  return strcmp (pa->render_device_path, pb->render_device_path);
+}
+
 GList *
 gst_va_device_find_devices (void)
 {
@@ -80,9 +88,10 @@ gst_va_device_find_devices (void)
       continue;
 
     GST_INFO ("Found VA-API device: %s", path);
-    g_queue_push_tail (&devices, gst_va_device_new (dpy, path));
+    g_queue_push_head (&devices, gst_va_device_new (dpy, path));
   }
 
+  g_queue_sort (&devices, compare_device_path, NULL);
   g_list_free_full (udev_devices, g_object_unref);
   g_object_unref (client);