1 /* 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_BASE_RATETRACKER_H_ 12 #define WEBRTC_BASE_RATETRACKER_H_ 13 14 #include <stdlib.h> 15 #include "webrtc/base/basictypes.h" 16 17 namespace rtc { 18 19 // Computes instantaneous units per second. 20 class RateTracker { 21 public: 22 RateTracker(); 23 virtual ~RateTracker() {} 24 25 size_t total_units() const; 26 size_t units_second(); 27 void Update(size_t units); 28 29 protected: 30 // overrideable for tests 31 virtual uint32 Time() const; 32 33 private: 34 size_t total_units_; 35 size_t units_second_; 36 uint32 last_units_second_time_; 37 size_t last_units_second_calc_; 38 }; 39 40 } // namespace rtc 41 42 #endif // WEBRTC_BASE_RATETRACKER_H_ 43
