1 files changed, 35 insertions, 0 deletions
diff --git a/media/cdm/key_system_names.h b/media/cdm/key_system_names.h
new file mode 100644
index 0000000..0216c69
--- /dev/null
+++ b/media/cdm/key_system_names.h
@@ -0,0 +1,35 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_CDM_KEY_SYSTEM_NAMES_H_
+#define MEDIA_CDM_KEY_SYSTEM_NAMES_H_
+
+#include <string>
+
+#include "media/base/media_export.h"
+
+namespace media {
+
+// TODO(jrummell): Change other uses of Clear Key to use this common value.
+
+// The key system names for Clear Key.
+MEDIA_EXPORT extern const char kPrefixedClearKey[];
+MEDIA_EXPORT extern const char kUnprefixedClearKey[];
+
+// The key system name for External Clear Key.
+MEDIA_EXPORT extern const char kExternalClearKey[];
+
+// Returns true if |key_system| is Clear Key, false otherwise.
+MEDIA_EXPORT inline bool IsClearKey(const std::string& key_system) {
+  return key_system == kPrefixedClearKey || key_system == kUnprefixedClearKey;
+}
+
+// Returns true if |key_system| is External Clear Key, false otherwise.
+MEDIA_EXPORT inline bool IsExternalClearKey(const std::string& key_system) {
+  return key_system == kExternalClearKey;
+}
+
+}  // namespace media
+
+#endif  // MEDIA_CDM_KEY_SYSTEM_NAMES_H_