Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

third_party/aom/aom_mem/include/aom_mem_intrnl.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AOM_MEM_INCLUDE_AOM_MEM_INTRNL_H_
+#define AOM_MEM_INCLUDE_AOM_MEM_INTRNL_H_
+#include "./aom_config.h"
+
+#define ADDRESS_STORAGE_SIZE sizeof(size_t)
+
+#ifndef DEFAULT_ALIGNMENT
+#if defined(VXWORKS)
+/*default addr alignment to use in calls to aom_* functions other than
+  aom_memalign*/
+#define DEFAULT_ALIGNMENT 32
+#else
+#define DEFAULT_ALIGNMENT (2 * sizeof(void *)) /* NOLINT */
+#endif
+#endif
+
+/*returns an addr aligned to the byte boundary specified by align*/
+#define align_addr(addr, align) \
+  (void *)(((size_t)(addr) + ((align)-1)) & ~(size_t)((align)-1))
+
+#endif  // AOM_MEM_INCLUDE_AOM_MEM_INTRNL_H_