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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 "device/sensors/data_fetcher_shared_memory.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/metrics/histogram_macros.h" | |
| 9 | |
| 10 namespace { | |
| 11 | |
| 12 bool SetMotionBuffer(device::DeviceMotionHardwareBuffer* buffer, bool enabled) { | |
| 13 if (!buffer) | |
| 14 return false; | |
| 15 buffer->seqlock.WriteBegin(); | |
| 16 buffer->data.all_available_sensors_are_active = enabled; | |
| 17 buffer->seqlock.WriteEnd(); | |
| 18 return true; | |
| 19 } | |
| 20 | |
| 21 bool SetOrientationBuffer(device::DeviceOrientationHardwareBuffer* buffer, | |
| 22 bool enabled) { | |
| 23 if (!buffer) | |
| 24 return false; | |
| 25 buffer->seqlock.WriteBegin(); | |
| 26 buffer->data.all_available_sensors_are_active = enabled; | |
| 27 buffer->seqlock.WriteEnd(); | |
| 28 return true; | |
| 29 } | |
| 30 | |
| 31 bool SetLightBuffer(device::DeviceLightHardwareBuffer* buffer, double lux) { | |
| 32 if (!buffer) | |
| 33 return false; | |
| 34 buffer->seqlock.WriteBegin(); | |
| 35 buffer->data.value = lux; | |
| 36 buffer->seqlock.WriteEnd(); | |
| 37 return true; | |
| 38 } | |
| 39 | |
| 40 } // namespace | |
| 41 | |
| 42 namespace device { | |
| 43 | |
| 44 DataFetcherSharedMemory::DataFetcherSharedMemory() {} | |
| 45 | |
| 46 DataFetcherSharedMemory::~DataFetcherSharedMemory() {} | |
| 47 | |
| 48 bool DataFetcherSharedMemory::Start(ConsumerType consumer_type, void* buffer) { | |
| 49 DCHECK(buffer); | |
| 50 | |
| 51 switch (consumer_type) { | |
| 52 case CONSUMER_TYPE_MOTION: | |
| 53 motion_buffer_ = static_cast<DeviceMotionHardwareBuffer*>(buffer); | |
| 54 UMA_HISTOGRAM_BOOLEAN("InertialSensor.MotionDefaultAvailable", false); | |
| 55 return SetMotionBuffer(motion_buffer_, true); | |
| 56 case CONSUMER_TYPE_ORIENTATION: | |
| 57 orientation_buffer_ = | |
| 58 static_cast<DeviceOrientationHardwareBuffer*>(buffer); | |
| 59 UMA_HISTOGRAM_BOOLEAN("InertialSensor.OrientationDefaultAvailable", | |
| 60 false); | |
| 61 return SetOrientationBuffer(orientation_buffer_, true); | |
| 62 case CONSUMER_TYPE_ORIENTATION_ABSOLUTE: | |
| 63 orientation_absolute_buffer_ = | |
| 64 static_cast<DeviceOrientationHardwareBuffer*>(buffer); | |
| 65 return SetOrientationBuffer(orientation_absolute_buffer_, true); | |
| 66 case CONSUMER_TYPE_LIGHT: | |
| 67 light_buffer_ = static_cast<DeviceLightHardwareBuffer*>(buffer); | |
| 68 return SetLightBuffer(light_buffer_, | |
| 69 std::numeric_limits<double>::infinity()); | |
| 70 default: | |
| 71 NOTREACHED(); | |
| 72 } | |
| 73 return false; | |
| 74 } | |
| 75 | |
| 76 bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) { | |
| 77 switch (consumer_type) { | |
| 78 case CONSUMER_TYPE_MOTION: | |
| 79 return SetMotionBuffer(motion_buffer_, false); | |
| 80 case CONSUMER_TYPE_ORIENTATION: | |
| 81 return SetOrientationBuffer(orientation_buffer_, false); | |
| 82 case CONSUMER_TYPE_ORIENTATION_ABSOLUTE: | |
| 83 return SetOrientationBuffer(orientation_absolute_buffer_, false); | |
| 84 case CONSUMER_TYPE_LIGHT: | |
| 85 return SetLightBuffer(light_buffer_, -1); | |
| 86 default: | |
| 87 NOTREACHED(); | |
| 88 } | |
| 89 return false; | |
| 90 } | |
| 91 | |
| 92 } // namespace device | |
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Chromium Code Reviews
Issue 2819273006:
Move //device/sensor impl to be part of the internal implemenation of the Device Service. (Closed)
