Index: media/base/encryption_scheme.h |
diff --git a/media/base/encryption_scheme.h b/media/base/encryption_scheme.h |
deleted file mode 100644 |
index 085599b46215fbc1a420b161a0d0c11f979c46b5..0000000000000000000000000000000000000000 |
--- a/media/base/encryption_scheme.h |
+++ /dev/null |
@@ -1,79 +0,0 @@ |
-// 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 "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. |
- enum CipherMode { |
- CIPHER_MODE_UNENCRYPTED, |
- CIPHER_MODE_AES_CTR, |
- CIPHER_MODE_AES_CBC, |
- CIPHER_MODE_MAX = CIPHER_MODE_AES_CBC |
- }; |
- |
- // CENC 3rd Edition adds pattern encryption, through two new protection |
- // schemes: 'cens' (with AES-CTR) and 'cbcs' (with AES-CBC). |
- // The pattern applies independently to each 'encrypted' part of the frame (as |
- // defined by the relevant subsample entries), and reduces further the |
- // actual encryption applied through a repeating pattern of (encrypt:skip) |
- // 16 byte blocks. For example, in a (1:9) pattern, the first block is |
- // encrypted, and the next nine are skipped. This pattern is applied |
- // repeatedly until the end of the last 16-byte block in the subsample. |
- // Any remaining bytes are left clear. |
- // If either of encrypt_blocks or skip_blocks is 0, pattern encryption is |
- // disabled. |
- class Pattern { |
- public: |
- Pattern(); |
- Pattern(uint32_t encrypt_blocks, uint32_t skip_blocks); |
- ~Pattern(); |
- |
- bool Matches(const Pattern& other) const; |
- |
- uint32_t encrypt_blocks() const { return encrypt_blocks_; } |
- uint32_t skip_blocks() const { return skip_blocks_; } |
- |
- bool IsInEffect() const; |
- |
- private: |
- uint32_t encrypt_blocks_ = 0; |
- uint32_t skip_blocks_ = 0; |
- |
- // Allow copy and assignment. |
- }; |
- |
- // 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 Pattern& pattern); |
- ~EncryptionScheme(); |
- |
- bool Matches(const EncryptionScheme& other) const; |
- |
- bool is_encrypted() const { return mode_ != CIPHER_MODE_UNENCRYPTED; } |
- CipherMode mode() const { return mode_; } |
- const Pattern& pattern() const { return pattern_; } |
- |
- private: |
- CipherMode mode_ = CIPHER_MODE_UNENCRYPTED; |
- Pattern pattern_; |
- |
- // Allow copy and assignment. |
-}; |
- |
-} // namespace media |
- |
-#endif // MEDIA_BASE_ENCRYPTION_SCHEME_H_ |