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| 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 #include "content/browser/device_sensors/data_fetcher_shared_memory.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/metrics/histogram.h" | |
| 9 | |
| 10 namespace { | |
| 11 | |
| 12 bool SetMotionBuffer(content::DeviceMotionHardwareBuffer* buffer, | |
| 13 bool enabled) { | |
| 14 if (!buffer) | |
| 15 return false; | |
| 16 buffer->seqlock.WriteBegin(); | |
| 17 buffer->data.allAvailableSensorsAreActive = enabled; | |
| 18 buffer->seqlock.WriteEnd(); | |
| 19 return true; | |
| 20 } | |
| 21 | |
| 22 bool SetOrientationBuffer( | |
| 23 content::DeviceOrientationHardwareBuffer* buffer, bool enabled) { | |
| 24 if (!buffer) | |
| 25 return false; | |
| 26 buffer->seqlock.WriteBegin(); | |
| 27 buffer->data.allAvailableSensorsAreActive = enabled; | |
| 28 buffer->seqlock.WriteEnd(); | |
| 29 return true; | |
| 30 } | |
| 31 | |
| 32 bool SetLightBuffer(content::DeviceLightHardwareBuffer* buffer, | |
| 33 double lux) { | |
| 34 if (!buffer) | |
| 35 return false; | |
| 36 buffer->seqlock.WriteBegin(); | |
| 37 buffer->data.value = lux; | |
| 38 buffer->seqlock.WriteEnd(); | |
| 39 return true; | |
| 40 } | |
| 41 | |
| 42 } // namespace | |
| 43 | |
| 44 namespace content { | |
| 45 | |
| 46 DataFetcherSharedMemory::DataFetcherSharedMemory() | |
| 47 : motion_buffer_(nullptr), | |
| 48 orientation_buffer_(nullptr), | |
| 49 light_buffer_(nullptr) { | |
| 50 } | |
| 51 | |
| 52 DataFetcherSharedMemory::~DataFetcherSharedMemory() { | |
| 53 } | |
| 54 | |
| 55 bool DataFetcherSharedMemory::Start(ConsumerType consumer_type, void* buffer) { | |
| 56 DCHECK(buffer); | |
| 57 | |
| 58 switch (consumer_type) { | |
| 59 case CONSUMER_TYPE_MOTION: | |
| 60 motion_buffer_ = static_cast<DeviceMotionHardwareBuffer*>(buffer); | |
| 61 UMA_HISTOGRAM_BOOLEAN("InertialSensor.MotionDefaultAvailable", false); | |
| 62 return SetMotionBuffer(motion_buffer_, true); | |
| 63 case CONSUMER_TYPE_ORIENTATION: | |
| 64 orientation_buffer_ = | |
| 65 static_cast<DeviceOrientationHardwareBuffer*>(buffer); | |
| 66 UMA_HISTOGRAM_BOOLEAN("InertialSensor.OrientationDefaultAvailable", | |
| 67 false); | |
| 68 return SetOrientationBuffer(orientation_buffer_, true); | |
| 69 case CONSUMER_TYPE_LIGHT: | |
| 70 light_buffer_ = static_cast<DeviceLightHardwareBuffer*>(buffer); | |
| 71 return SetLightBuffer(light_buffer_, | |
| 72 std::numeric_limits<double>::infinity()); | |
| 73 default: | |
| 74 NOTREACHED(); | |
| 75 } | |
| 76 return false; | |
| 77 } | |
| 78 | |
| 79 bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) { | |
| 80 switch (consumer_type) { | |
| 81 case CONSUMER_TYPE_MOTION: | |
| 82 return SetMotionBuffer(motion_buffer_, false); | |
| 83 case CONSUMER_TYPE_ORIENTATION: | |
| 84 return SetOrientationBuffer(orientation_buffer_, false); | |
| 85 case CONSUMER_TYPE_LIGHT: | |
| 86 return SetLightBuffer(light_buffer_, -1); | |
| 87 default: | |
| 88 NOTREACHED(); | |
| 89 } | |
| 90 return false; | |
| 91 } | |
| 92 | |
| 93 } // namespace content | |
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Chromium Code Reviews
Issue 1164563003:
Extract device_sensors to /device via Mojofication (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master