Widevine MediaCas client code that works with Android R

wvutil/include/string_conversions.h

@@ -0,0 +1,44 @@
+// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+
+#ifndef WVCAS_UTIL_STRING_CONVERSIONS_H_
+#define WVCAS_UTIL_STRING_CONVERSIONS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include "util_common.h"
+
+namespace wvutil {
+
+CORE_UTIL_EXPORT std::vector<uint8_t> a2b_hex(const std::string& b);
+CORE_UTIL_EXPORT std::vector<uint8_t> a2b_hex(const std::string& label,
+                                              const std::string& b);
+CORE_UTIL_EXPORT std::string a2bs_hex(const std::string& b);
+CORE_UTIL_EXPORT std::string b2a_hex(const std::vector<uint8_t>& b);
+CORE_UTIL_EXPORT std::string b2a_hex(const std::string& b);
+CORE_UTIL_EXPORT std::string Base64Encode(
+    const std::vector<uint8_t>& bin_input);
+CORE_UTIL_EXPORT std::vector<uint8_t> Base64Decode(
+    const std::string& bin_input);
+CORE_UTIL_EXPORT std::string Base64SafeEncode(
+    const std::vector<uint8_t>& bin_input);
+CORE_UTIL_EXPORT std::string Base64SafeEncodeNoPad(
+    const std::vector<uint8_t>& bin_input);
+CORE_UTIL_EXPORT std::vector<uint8_t> Base64SafeDecode(
+    const std::string& bin_input);
+CORE_UTIL_EXPORT std::string HexEncode(const uint8_t* bytes, unsigned size);
+CORE_UTIL_EXPORT std::string IntToString(int value);
+CORE_UTIL_EXPORT int64_t htonll64(int64_t x);
+CORE_UTIL_EXPORT inline int64_t ntohll64(int64_t x) { return htonll64(x); }
+CORE_UTIL_EXPORT std::string BytesToString(const uint8_t* bytes, unsigned size);
+// Encode unsigned integer into a big endian formatted string
+CORE_UTIL_EXPORT std::string EncodeUint32(unsigned int u);
+
+}  // namespace wvutil
+
+#endif  // WVCAS_UTIL_STRING_CONVERSIONS_H_