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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "media/base/encryption_scheme.h" |
| 6 |
| 7 namespace media { |
| 8 |
| 9 EncryptionScheme::PatternSpec::PatternSpec() |
| 10 : encrypt_blocks_(0), skip_blocks_(0) {} |
| 11 |
| 12 EncryptionScheme::PatternSpec::PatternSpec(uint32_t encrypt_blocks, |
| 13 uint32_t skip_blocks) |
| 14 : encrypt_blocks_(encrypt_blocks), skip_blocks_(skip_blocks) {} |
| 15 |
| 16 EncryptionScheme::PatternSpec::~PatternSpec() {} |
| 17 |
| 18 bool EncryptionScheme::PatternSpec::Matches(const PatternSpec& other) const { |
| 19 return encrypt_blocks_ == other.encrypt_blocks() && |
| 20 skip_blocks_ == other.skip_blocks(); |
| 21 } |
| 22 |
| 23 bool EncryptionScheme::PatternSpec::IsInEffect() const { |
| 24 return encrypt_blocks_ != 0 && skip_blocks_ != 0; |
| 25 } |
| 26 |
| 27 EncryptionScheme::EncryptionScheme() |
| 28 : mode_(kCipherModeUnencrypted), pattern_() {} |
| 29 |
| 30 EncryptionScheme::EncryptionScheme(CipherMode mode) : mode_(mode), pattern_() {} |
| 31 |
| 32 EncryptionScheme::EncryptionScheme(CipherMode mode, const PatternSpec& pattern) |
| 33 : mode_(mode), pattern_(pattern) {} |
| 34 |
| 35 EncryptionScheme::~EncryptionScheme() {} |
| 36 |
| 37 // static |
| 38 EncryptionScheme EncryptionScheme::Unencrypted() { |
| 39 return EncryptionScheme(kCipherModeUnencrypted); |
| 40 } |
| 41 |
| 42 bool EncryptionScheme::Matches(const EncryptionScheme& other) const { |
| 43 return mode_ == other.mode_ && pattern_.Matches(other.pattern_); |
| 44 } |
| 45 |
| 46 bool EncryptionScheme::is_encrypted() const { |
| 47 return mode_ != kCipherModeUnencrypted; |
| 48 } |
| 49 |
| 50 } // namespace media |
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