Refactor and cleanup codes. No functional changes.

strings/serialize.cc

@@ -0,0 +1,33 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2017 Google LLC.
+//
+// This software is licensed under the terms defined in the Widevine Master
+// License Agreement. For a copy of this agreement, please contact
+// widevine-licensing@google.com.
+////////////////////////////////////////////////////////////////////////////////
+
+#include "strings/serialize.h"
+
+#include <string>
+
+#include "glog/logging.h"
+
+namespace widevine {
+namespace strings {
+
+uint32_t KeyToUint32(const std::string& key) {
+  CHECK_GE(key.size(), 4);
+  return static_cast<uint8_t>(key[0]) << 24 |
+         static_cast<uint8_t>(key[1]) << 16 |
+         static_cast<uint8_t>(key[2]) << 8 | static_cast<uint8_t>(key[3]);
+}
+
+std::string EncodeUint64(uint64_t value) {
+  std::string s;
+  s.resize(sizeof(value));
+  memcpy(&s[0], &value, sizeof(value));
+  return s;
+}
+
+}  // namespace strings
+}  // namespace widevine