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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 #ifndef MEDIA_BASE_ANDROID_TEST_STATISTICS_H_ | |
| 6 #define MEDIA_BASE_ANDROID_TEST_STATISTICS_H_ | |
| 7 | |
| 8 namespace media { | |
| 9 | |
| 10 // Class that computes statistics: number of calls, minimum and maximum values. | |
| 11 // It is used for in tests PTS statistics to verify that playback did actually | |
| 12 // happen. | |
| 13 | |
| 14 template <typename T> | |
| 15 class Minimax { | |
| 16 public: | |
| 17 Minimax() : num_values_(0) {} | |
| 18 ~Minimax() {} | |
| 19 | |
| 20 void AddValue(const T& value) { | |
| 21 if (num_values_ == 0) | |
| 22 min_ = max_ = value; | |
| 23 else if (value < min_) | |
| 24 min_ = value; | |
| 25 else if (max_ < value) | |
| 26 max_ = value; | |
| 27 | |
| 28 ++num_values_; | |
| 29 } | |
| 30 | |
| 31 void Clear() { | |
| 32 min_ = T(); | |
| 33 max_ = T(); | |
| 34 num_values_ = 0; | |
| 35 } | |
| 36 | |
| 37 const T& min() const { return min_; } | |
| 38 const T& max() const { return max_; } | |
| 39 int num_values() const { return num_values_; } | |
| 40 | |
| 41 private: | |
| 42 T min_; | |
| 43 T max_; | |
| 44 int num_values_; | |
| 45 }; | |
| 46 | |
| 47 } // namespace media | |
| 48 | |
| 49 #endif // MEDIA_BASE_ANDROID_TEST_STATISTICS_H_ | |
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