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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_BLINK_TEST_RANDOM_H_ | 5 #ifndef MEDIA_BLINK_TEST_RANDOM_H_ |
6 #define MEDIA_BLINK_TEST_RANDOM_H_ | 6 #define MEDIA_BLINK_TEST_RANDOM_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
| 10 #include "base/logging.h" |
| 11 |
10 // Vastly simplified ACM random class meant to only be used for testing. | 12 // Vastly simplified ACM random class meant to only be used for testing. |
11 // This class is meant to generate predictable sequences of pseudorandom | 13 // This class is meant to generate predictable sequences of pseudorandom |
12 // numbers, unlike the classes in base/rand_util.h which are meant to generate | 14 // numbers, unlike the classes in base/rand_util.h which are meant to generate |
13 // unpredictable sequences. | 15 // unpredictable sequences. |
14 // See | 16 // See |
15 // https://code.google.com/p/szl/source/browse/trunk/src/utilities/acmrandom.h | 17 // https://code.google.com/p/szl/source/browse/trunk/src/utilities/acmrandom.h |
16 // for more information. | 18 // for more information. |
17 | 19 |
18 namespace media { | 20 namespace media { |
19 | 21 |
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34 } | 36 } |
35 | 37 |
36 private: | 38 private: |
37 static const uint64_t M = 2147483647L; // 2^32-1 | 39 static const uint64_t M = 2147483647L; // 2^32-1 |
38 int32_t seed_; | 40 int32_t seed_; |
39 }; | 41 }; |
40 | 42 |
41 } // namespace media | 43 } // namespace media |
42 | 44 |
43 #endif // MEDIA_BLINK_TEST_RANDOM_H_ | 45 #endif // MEDIA_BLINK_TEST_RANDOM_H_ |
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