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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/browser/device_sensors/data_fetcher_shared_memory.h" | 5 #include "device/sensors/data_fetcher_shared_memory.h" |
| 6 | 6 |
| 7 #include <stdint.h> | 7 #include <stdint.h> |
| 8 | 8 |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/metrics/histogram_macros.h" | 10 #include "base/metrics/histogram_macros.h" |
| 11 #include "base/single_thread_task_runner.h" | 11 #include "base/single_thread_task_runner.h" |
| 12 #include "content/browser/device_sensors/ambient_light_mac.h" | 12 #include "device/sensors/ambient_light_mac.h" |
| 13 #include "device/sensors/public/cpp/device_util_mac.h" | 13 #include "device/sensors/public/cpp/device_util_mac.h" |
| 14 #include "third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h" | 14 #include "third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h" |
| 15 | 15 |
| 16 namespace { | 16 namespace device { |
| 17 | 17 |
| 18 const double kMeanGravity = 9.80665; | 18 const double kMeanGravity = 9.80665; |
| 19 | 19 |
| 20 void FetchLight(content::AmbientLightSensor* sensor, | 20 void FetchLight(AmbientLightSensor* sensor, DeviceLightHardwareBuffer* buffer) { |
| 21 content::DeviceLightHardwareBuffer* buffer) { | |
| 22 DCHECK(sensor); | 21 DCHECK(sensor); |
| 23 DCHECK(buffer); | 22 DCHECK(buffer); |
| 24 // Macbook pro has 2 lux values, left and right, we take the average. | 23 // Macbook pro has 2 lux values, left and right, we take the average. |
| 25 // The raw sensor values are converted to lux using LMUvalueToLux(raw_value) | 24 // The raw sensor values are converted to lux using LMUvalueToLux(raw_value) |
| 26 // similar to how it is done in Firefox. | 25 // similar to how it is done in Firefox. |
| 27 uint64_t lux_value[2]; | 26 uint64_t lux_value[2]; |
| 28 if (!sensor->ReadSensorValue(lux_value)) | 27 if (!sensor->ReadSensorValue(lux_value)) |
| 29 return; | 28 return; |
| 30 uint64_t mean = (lux_value[0] + lux_value[1]) / 2; | 29 uint64_t mean = (lux_value[0] + lux_value[1]) / 2; |
| 31 double lux = device::LMUvalueToLux(mean); | 30 double lux = LMUvalueToLux(mean); |
| 32 buffer->seqlock.WriteBegin(); | 31 buffer->seqlock.WriteBegin(); |
| 33 buffer->data.value = lux; | 32 buffer->data.value = lux; |
| 34 buffer->seqlock.WriteEnd(); | 33 buffer->seqlock.WriteEnd(); |
| 35 } | 34 } |
| 36 | 35 |
| 37 void FetchMotion(SuddenMotionSensor* sensor, | 36 void FetchMotion(SuddenMotionSensor* sensor, |
| 38 content::DeviceMotionHardwareBuffer* buffer) { | 37 DeviceMotionHardwareBuffer* buffer) { |
| 39 DCHECK(sensor); | 38 DCHECK(sensor); |
| 40 DCHECK(buffer); | 39 DCHECK(buffer); |
| 41 | 40 |
| 42 float axis_value[3]; | 41 float axis_value[3]; |
| 43 if (!sensor->ReadSensorValues(axis_value)) | 42 if (!sensor->ReadSensorValues(axis_value)) |
| 44 return; | 43 return; |
| 45 | 44 |
| 46 buffer->seqlock.WriteBegin(); | 45 buffer->seqlock.WriteBegin(); |
| 47 buffer->data.accelerationIncludingGravityX = axis_value[0] * kMeanGravity; | 46 buffer->data.accelerationIncludingGravityX = axis_value[0] * kMeanGravity; |
| 48 buffer->data.hasAccelerationIncludingGravityX = true; | 47 buffer->data.hasAccelerationIncludingGravityX = true; |
| 49 buffer->data.accelerationIncludingGravityY = axis_value[1] * kMeanGravity; | 48 buffer->data.accelerationIncludingGravityY = axis_value[1] * kMeanGravity; |
| 50 buffer->data.hasAccelerationIncludingGravityY = true; | 49 buffer->data.hasAccelerationIncludingGravityY = true; |
| 51 buffer->data.accelerationIncludingGravityZ = axis_value[2] * kMeanGravity; | 50 buffer->data.accelerationIncludingGravityZ = axis_value[2] * kMeanGravity; |
| 52 buffer->data.hasAccelerationIncludingGravityZ = true; | 51 buffer->data.hasAccelerationIncludingGravityZ = true; |
| 53 buffer->data.allAvailableSensorsAreActive = true; | 52 buffer->data.allAvailableSensorsAreActive = true; |
| 54 buffer->seqlock.WriteEnd(); | 53 buffer->seqlock.WriteEnd(); |
| 55 } | 54 } |
| 56 | 55 |
| 57 void FetchOrientation(SuddenMotionSensor* sensor, | 56 void FetchOrientation(SuddenMotionSensor* sensor, |
| 58 content::DeviceOrientationHardwareBuffer* buffer) { | 57 DeviceOrientationHardwareBuffer* buffer) { |
| 59 DCHECK(sensor); | 58 DCHECK(sensor); |
| 60 DCHECK(buffer); | 59 DCHECK(buffer); |
| 61 | 60 |
| 62 // Retrieve per-axis calibrated values. | 61 // Retrieve per-axis calibrated values. |
| 63 float axis_value[3]; | 62 float axis_value[3]; |
| 64 if (!sensor->ReadSensorValues(axis_value)) | 63 if (!sensor->ReadSensorValues(axis_value)) |
| 65 return; | 64 return; |
| 66 | 65 |
| 67 // Transform the accelerometer values to W3C draft angles. | 66 // Transform the accelerometer values to W3C draft angles. |
| 68 // | 67 // |
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| 104 | 103 |
| 105 buffer->seqlock.WriteBegin(); | 104 buffer->seqlock.WriteBegin(); |
| 106 buffer->data.beta = beta; | 105 buffer->data.beta = beta; |
| 107 buffer->data.hasBeta = true; | 106 buffer->data.hasBeta = true; |
| 108 buffer->data.gamma = gamma; | 107 buffer->data.gamma = gamma; |
| 109 buffer->data.hasGamma = true; | 108 buffer->data.hasGamma = true; |
| 110 buffer->data.allAvailableSensorsAreActive = true; | 109 buffer->data.allAvailableSensorsAreActive = true; |
| 111 buffer->seqlock.WriteEnd(); | 110 buffer->seqlock.WriteEnd(); |
| 112 } | 111 } |
| 113 | 112 |
| 114 } // namespace | |
| 115 | |
| 116 namespace content { | |
| 117 | |
| 118 DataFetcherSharedMemory::DataFetcherSharedMemory() { | 113 DataFetcherSharedMemory::DataFetcherSharedMemory() { |
| 119 } | 114 } |
| 120 | 115 |
| 121 DataFetcherSharedMemory::~DataFetcherSharedMemory() { | 116 DataFetcherSharedMemory::~DataFetcherSharedMemory() { |
| 122 } | 117 } |
| 123 | 118 |
| 124 void DataFetcherSharedMemory::Fetch(unsigned consumer_bitmask) { | 119 void DataFetcherSharedMemory::Fetch(unsigned consumer_bitmask) { |
| 125 DCHECK(GetPollingMessageLoop()->task_runner()->BelongsToCurrentThread()); | 120 DCHECK(GetPollingMessageLoop()->task_runner()->BelongsToCurrentThread()); |
| 126 DCHECK(consumer_bitmask & CONSUMER_TYPE_ORIENTATION || | 121 DCHECK(consumer_bitmask & CONSUMER_TYPE_ORIENTATION || |
| 127 consumer_bitmask & CONSUMER_TYPE_MOTION || | 122 consumer_bitmask & CONSUMER_TYPE_MOTION || |
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| 250 light_buffer_->seqlock.WriteEnd(); | 245 light_buffer_->seqlock.WriteEnd(); |
| 251 light_buffer_ = nullptr; | 246 light_buffer_ = nullptr; |
| 252 } | 247 } |
| 253 return true; | 248 return true; |
| 254 default: | 249 default: |
| 255 NOTREACHED(); | 250 NOTREACHED(); |
| 256 } | 251 } |
| 257 return false; | 252 return false; |
| 258 } | 253 } |
| 259 | 254 |
| 260 } // namespace content | 255 } // namespace device |
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