| // Copyright 2015 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_BASE_ENCRYPTION_SCHEME_H_ |
| #define MEDIA_BASE_ENCRYPTION_SCHEME_H_ |
| |
| #include <stdint.h> |
| |
| #include <iosfwd> |
| |
| #include "media/base/encryption_pattern.h" |
| #include "media/base/media_export.h" |
| |
| namespace media { |
| |
| // Specification of whether and how the stream is encrypted (in whole or part). |
| class MEDIA_EXPORT EncryptionScheme { |
| public: |
| // Algorithm and mode used for encryption. CIPHER_MODE_UNENCRYPTED indicates |
| // no encryption. |
| // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.media |
| enum CipherMode { |
| CIPHER_MODE_UNENCRYPTED, |
| CIPHER_MODE_AES_CTR, |
| CIPHER_MODE_AES_CBC, |
| CIPHER_MODE_MAX = CIPHER_MODE_AES_CBC |
| }; |
| |
| // The default constructor makes an instance that indicates no encryption. |
| EncryptionScheme(); |
| |
| // This constructor allows specification of the cipher mode and the pattern. |
| EncryptionScheme(CipherMode mode, const EncryptionPattern& pattern); |
| ~EncryptionScheme(); |
| |
| bool Matches(const EncryptionScheme& other) const; |
| |
| bool is_encrypted() const; |
| CipherMode mode() const; |
| const EncryptionPattern& pattern() const; |
| |
| private: |
| CipherMode mode_ = CIPHER_MODE_UNENCRYPTED; |
| EncryptionPattern pattern_; |
| |
| // Allow copy and assignment. |
| }; |
| |
| // For logging use only. |
| MEDIA_EXPORT std::ostream& operator<<( |
| std::ostream& os, |
| const EncryptionScheme& encryption_scheme); |
| |
| } // namespace media |
| |
| #endif // MEDIA_BASE_ENCRYPTION_SCHEME_H_ |