odk: core serialization structs & functions

odk directory copied from wvgerrit.
branch oemcrypto-v16
commit 0c9a7dc

Bug: 140758896
Test: odk_test
Change-Id: I0c631f771b794468a63e4395f6b9c3b60a1dfd4f

libwvdrmengine/oemcrypto/odk/include/odk_assert.h

@@ -0,0 +1,27 @@
+
+/*
+ * Copyright 2019 Google LLC. All Rights Reserved. This file and proprietary
+ * source code may only be used and distributed under the Widevine Master
+ * License Agreement.
+ */
+
+#ifndef ODK_ASSERT_H_
+#define ODK_ASSERT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if (__STDC_VERSION__ >= 201112L)
+#  include <assert.h>
+#  define odk_static_assert static_assert
+#else
+#  define odk_static_assert(msg, e) \
+    enum { odk_static_assert = 1 / (!!((msg) && (e))) };
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ODK_ASSERT_H_ */