Adds a sunxi-cedrus-drv-video libVA backend

This VA backend uses v4l2's Frame API proposal to interface with the
"sunxi-cedrus" video driver on Allwinner SoC. Only a few parts of the
code are really dependent on sunxi-cedrus and this VA backend could be
reused for other v4l drivers using the Frame API.

src/tiled_yuv.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2014 Jens Kuske <jenskuske@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __TILED_YUV_H__
+#define __TILED_YUV_H__
+
+void tiled_to_planar(void *src, void *dst, unsigned int dst_pitch,
+                     unsigned int width, unsigned int height);
+
+void tiled_deinterleave_to_planar(void *src, void *dst1, void *dst2,
+                                  unsigned int dst_pitch,
+                                  unsigned int width, unsigned int height);
+
+#endif