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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 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 "device/generic_sensor/sensor_provider_impl.h" | 5 #include "device/generic_sensor/sensor_provider_impl.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "device/generic_sensor/platform_sensor_provider.h" | 9 #include "device/generic_sensor/platform_sensor_provider.h" |
10 #include "device/generic_sensor/sensor_impl.h" | 10 #include "device/generic_sensor/sensor_impl.h" |
11 #include "mojo/public/cpp/bindings/strong_binding.h" | 11 #include "mojo/public/cpp/bindings/strong_binding.h" |
12 | 12 |
13 namespace device { | 13 namespace device { |
14 | 14 |
15 namespace { | |
16 | |
17 uint64_t GetBufferOffset(mojom::SensorType type) { | |
18 return (static_cast<uint64_t>(mojom::SensorType::LAST) - | |
19 static_cast<uint64_t>(type)) * | |
20 mojom::SensorInitParams::kReadBufferSize; | |
21 } | |
22 | |
23 } // namespace | |
24 | |
25 // static | 15 // static |
26 void SensorProviderImpl::Create(mojom::SensorProviderRequest request) { | 16 void SensorProviderImpl::Create(mojom::SensorProviderRequest request) { |
27 PlatformSensorProvider* provider = PlatformSensorProvider::GetInstance(); | 17 PlatformSensorProvider* provider = PlatformSensorProvider::GetInstance(); |
28 if (provider) { | 18 if (provider) { |
29 mojo::MakeStrongBinding(base::WrapUnique(new SensorProviderImpl(provider)), | 19 mojo::MakeStrongBinding(base::WrapUnique(new SensorProviderImpl(provider)), |
30 std::move(request)); | 20 std::move(request)); |
31 } | 21 } |
32 } | 22 } |
33 | 23 |
34 SensorProviderImpl::SensorProviderImpl(PlatformSensorProvider* provider) | 24 SensorProviderImpl::SensorProviderImpl(PlatformSensorProvider* provider) |
35 : provider_(provider) { | 25 : provider_(provider) { |
36 DCHECK(provider_); | 26 DCHECK(provider_); |
37 } | 27 } |
38 | 28 |
39 SensorProviderImpl::~SensorProviderImpl() {} | 29 SensorProviderImpl::~SensorProviderImpl() {} |
40 | 30 |
41 void SensorProviderImpl::GetSensor(mojom::SensorType type, | 31 void SensorProviderImpl::GetSensor(mojom::SensorType type, |
42 mojom::SensorRequest sensor_request, | 32 mojom::SensorRequest sensor_request, |
43 const GetSensorCallback& callback) { | 33 const GetSensorCallback& callback) { |
44 auto cloned_handle = provider_->CloneSharedBufferHandle(); | 34 auto cloned_handle = provider_->CloneSharedBufferHandle(); |
45 if (!cloned_handle.is_valid()) { | 35 if (!cloned_handle.is_valid()) { |
46 callback.Run(nullptr, nullptr); | 36 callback.Run(nullptr, nullptr); |
47 return; | 37 return; |
48 } | 38 } |
49 | 39 |
50 scoped_refptr<PlatformSensor> sensor = provider_->GetSensor(type); | 40 scoped_refptr<PlatformSensor> sensor = provider_->GetSensor(type); |
51 if (!sensor) { | 41 if (!sensor) { |
52 sensor = provider_->CreateSensor( | 42 sensor = provider_->CreateSensor(type); |
53 type, mojom::SensorInitParams::kReadBufferSize, GetBufferOffset(type)); | |
54 } | 43 } |
55 | 44 |
56 if (!sensor) { | 45 if (!sensor) { |
57 callback.Run(nullptr, nullptr); | 46 callback.Run(nullptr, nullptr); |
58 return; | 47 return; |
59 } | 48 } |
60 | 49 |
61 auto sensor_impl = base::MakeUnique<SensorImpl>(sensor); | 50 auto sensor_impl = base::MakeUnique<SensorImpl>(sensor); |
62 | 51 |
63 auto init_params = mojom::SensorInitParams::New(); | 52 auto init_params = mojom::SensorInitParams::New(); |
64 init_params->memory = std::move(cloned_handle); | 53 init_params->memory = std::move(cloned_handle); |
65 init_params->buffer_offset = GetBufferOffset(type); | 54 init_params->buffer_offset = provider_->GetSharedBufferOffset(type); |
66 init_params->mode = sensor->GetReportingMode(); | 55 init_params->mode = sensor->GetReportingMode(); |
67 init_params->default_configuration = sensor->GetDefaultConfiguration(); | 56 init_params->default_configuration = sensor->GetDefaultConfiguration(); |
68 | 57 |
69 callback.Run(std::move(init_params), sensor_impl->GetClient()); | 58 callback.Run(std::move(init_params), sensor_impl->GetClient()); |
70 | 59 |
71 mojo::MakeStrongBinding(std::move(sensor_impl), std::move(sensor_request)); | 60 mojo::MakeStrongBinding(std::move(sensor_impl), std::move(sensor_request)); |
72 } | 61 } |
73 | 62 |
74 } // namespace device | 63 } // namespace device |
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