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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_BASE_UTIL_H_ | 5 #ifndef MEDIA_BASE_UTIL_H_ |
6 #define MEDIA_BASE_UTIL_H_ | 6 #define MEDIA_BASE_UTIL_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
| 11 #include "media/base/encryption_scheme.h" |
11 #include "media/base/media_export.h" | 12 #include "media/base/media_export.h" |
12 | 13 |
13 namespace media { | 14 namespace media { |
14 | 15 |
15 // Simply returns an empty vector. {Audio|Video}DecoderConfig are often | 16 // Simply returns an empty vector. {Audio|Video}DecoderConfig are often |
16 // constructed with empty extra data. | 17 // constructed with empty extra data. |
17 MEDIA_EXPORT std::vector<uint8_t> EmptyExtraData(); | 18 MEDIA_EXPORT std::vector<uint8_t> EmptyExtraData(); |
18 | 19 |
| 20 // The following helper functions return new instances of EncryptionScheme that |
| 21 // indicate widely used settings. |
| 22 MEDIA_EXPORT EncryptionScheme Unencrypted(); |
| 23 MEDIA_EXPORT EncryptionScheme AesCtrEncryptionScheme(); |
| 24 |
19 } // namespace media | 25 } // namespace media |
20 | 26 |
21 #endif // MEDIA_BASE_UTIL_H_ | 27 #endif // MEDIA_BASE_UTIL_H_ |
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