blob: 6a8bc0a9f42a479dc768c9816bc0b31f900b71a0 [file] [log] [blame]
// 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.
#include "media/base/key_system_names.h"
namespace media {
const char kClearKey[] = "org.w3.clearkey";
const char kExternalClearKey[] = "org.chromium.externalclearkey";
bool IsClearKey(const std::string& key_system) {
return key_system == kClearKey;
}
bool IsSubKeySystemOf(const std::string& key_system, const std::string& base) {
std::string prefix = base + '.';
return key_system.substr(0, prefix.size()) == prefix;
}
bool IsExternalClearKey(const std::string& key_system) {
return key_system == kExternalClearKey ||
IsSubKeySystemOf(key_system, kExternalClearKey);
}
} // namespace media