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 13namespace base { 14class TimeDelta; 15} // namespace base 16 17namespace content { 18 19typedef std::vector<PowerEvent> PowerEventVector; 20 21// A class used to get power usage. 22class 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