1 // Copyright 2014 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 CONTENT_BROWSER_POWER_PROFILER_POWER_DATA_PROVIDER_H_ 6 #define CONTENT_BROWSER_POWER_PROFILER_POWER_DATA_PROVIDER_H_ 7 8 #include <vector> 9 10 #include "base/memory/scoped_ptr.h" 11 #include "content/browser/power_profiler/power_event.h" 12 13 namespace base { 14 class TimeDelta; 15 } // namespace base 16 17 namespace content { 18 19 typedef std::vector<PowerEvent> PowerEventVector; 20 21 // A class used to get power usage. 22 class PowerDataProvider { 23 public: 24 enum AccuracyLevel { 25 High, 26 Moderate, 27 Low 28 }; 29 30 static scoped_ptr<PowerDataProvider> Create(); 31 32 PowerDataProvider() {} 33 virtual ~PowerDataProvider() {} 34 35 // Returns a vector of power events, one per type, for the types it supports. 36 virtual PowerEventVector GetData() = 0; 37 38 // Returns sampling rate at which the provider can operate. 39 virtual base::TimeDelta GetSamplingRate() = 0; 40 41 // Returns accuracy level of the provider. 42 virtual AccuracyLevel GetAccuracyLevel() = 0; 43 }; 44 45 } // namespace content 46 47 #endif // CONTENT_BROWSER_POWER_PROFILER_POWER_DATA_PROVIDER_H_ 48
