OLD | NEW |
(Empty) | |
| 1 // Copyright 2016 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/sensor_provider_impl.h" |
| 6 |
| 7 #include <utility> |
| 8 |
| 9 #include "device/sensors/platform_sensor_provider.h" |
| 10 #include "device/sensors/sensor_impl.h" |
| 11 |
| 12 namespace device { |
| 13 namespace mojom { |
| 14 |
| 15 namespace { |
| 16 const uint64_t kSharedBufferSizeInBytes = |
| 17 SensorReadBuffer::kReadBufferSize * static_cast<uint64_t>(SensorType::LAST); |
| 18 } |
| 19 |
| 20 PlatformSensorProvider* SensorProviderImpl::s_provider_ = nullptr; |
| 21 |
| 22 // static |
| 23 void SensorProviderImpl::Create( |
| 24 mojo::InterfaceRequest<SensorProvider> request) { |
| 25 if (!s_provider_) |
| 26 s_provider_ = PlatformSensorProvider::Create(kSharedBufferSizeInBytes); |
| 27 |
| 28 if (s_provider_) { |
| 29 new SensorProviderImpl(std::move(request)); |
| 30 } |
| 31 } |
| 32 |
| 33 SensorProviderImpl::SensorProviderImpl( |
| 34 mojo::InterfaceRequest<SensorProvider> request) |
| 35 : binding_(this, std::move(request)) {} |
| 36 |
| 37 SensorProviderImpl::~SensorProviderImpl() {} |
| 38 |
| 39 namespace { |
| 40 |
| 41 void ReportError(const SensorProvider::GetSensorCallback& callback) { |
| 42 callback.Run(nullptr, nullptr); |
| 43 } |
| 44 |
| 45 uint64_t GetBufferOffset(device::SensorType type) { |
| 46 return (static_cast<uint64_t>(SensorType::LAST) - |
| 47 static_cast<uint64_t>(type)) * |
| 48 SensorReadBuffer::kReadBufferSize; |
| 49 } |
| 50 |
| 51 } // namespace |
| 52 |
| 53 void SensorProviderImpl::GetSensor(device::SensorType type, |
| 54 SensorRequest sensor_request, |
| 55 const GetSensorCallback& callback) { |
| 56 auto cloned_handle = s_provider_->GetClonedSharedBufferHandle(); |
| 57 if (!cloned_handle.is_valid()) { |
| 58 ReportError(callback); |
| 59 return; |
| 60 } |
| 61 |
| 62 auto sensor = s_provider_->GetSensor(type); |
| 63 if (!sensor) |
| 64 sensor = s_provider_->CreateSensor(type, SensorReadBuffer::kReadBufferSize, |
| 65 GetBufferOffset(type)); |
| 66 if (!sensor) { |
| 67 ReportError(callback); |
| 68 return; |
| 69 } |
| 70 |
| 71 SensorImpl* sensor_impl = new SensorImpl(std::move(sensor_request), sensor); |
| 72 |
| 73 SensorReadBufferPtr sensor_read_buffer = SensorReadBuffer::New(); |
| 74 sensor_read_buffer->memory = std::move(cloned_handle); |
| 75 sensor_read_buffer->offset = GetBufferOffset(type); |
| 76 sensor_read_buffer->mode = sensor->GetReportingMode(); |
| 77 |
| 78 callback.Run(std::move(sensor_read_buffer), sensor_impl->GetClient()); |
| 79 } |
| 80 |
| 81 } // namespace mojom |
| 82 } // namespace device |
OLD | NEW |