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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 "services/video_capture/service_impl.h" | 5 #include "services/video_capture/service_impl.h" |
6 | 6 |
7 #include "base/memory/ptr_util.h" | 7 #include "mojo/public/cpp/bindings/strong_binding.h" |
8 #include "base/message_loop/message_loop.h" | 8 #include "services/service_manager/public/cpp/interface_registry.h" |
9 #include "media/capture/video/fake_video_capture_device_factory.h" | 9 #include "services/service_manager/public/cpp/service_context.h" |
10 #include "media/capture/video/video_capture_buffer_pool.h" | 10 #include "services/video_capture/device_factory_provider_impl.h" |
11 #include "media/capture/video/video_capture_buffer_tracker.h" | 11 #include "services/video_capture/public/interfaces/constants.mojom.h" |
12 #include "media/capture/video/video_capture_jpeg_decoder.h" | |
13 #include "media/capture/video/video_capture_system_impl.h" | |
14 #include "services/service_manager/public/cpp/service_info.h" | |
15 #include "services/video_capture/device_factory_media_to_mojo_adapter.h" | |
16 | |
17 namespace { | |
18 | |
19 // TODO(chfremer): Replace with an actual decoder factory. | |
20 // https://crbug.com/584797 | |
21 std::unique_ptr<media::VideoCaptureJpegDecoder> CreateJpegDecoder() { | |
22 return nullptr; | |
23 } | |
24 | |
25 } // anonymous namespace | |
26 | 12 |
27 namespace video_capture { | 13 namespace video_capture { |
28 | 14 |
29 ServiceImpl::ServiceImpl() { | 15 ServiceImpl::ServiceImpl() |
30 registry_.AddInterface<mojom::Service>(this); | 16 : shutdown_delay_in_seconds_(mojom::kDefaultShutdownDelayInSeconds), |
31 } | 17 weak_factory_(this) {} |
32 | 18 |
33 ServiceImpl::~ServiceImpl() = default; | 19 ServiceImpl::~ServiceImpl() = default; |
34 | 20 |
| 21 void ServiceImpl::OnStart() { |
| 22 DVLOG(3) << "Service Starting"; |
| 23 ref_factory_ = |
| 24 base::MakeUnique<service_manager::ServiceContextRefFactory>(base::Bind( |
| 25 &ServiceImpl::MaybeRequestQuitDelayed, base::Unretained(this))); |
| 26 registry_.AddInterface<mojom::DeviceFactoryProvider>( |
| 27 // Unretained |this| is safe because |registry_| is owned by |this|. |
| 28 base::Bind(&ServiceImpl::OnDeviceFactoryProviderRequest, |
| 29 base::Unretained(this))); |
| 30 } |
| 31 |
35 void ServiceImpl::OnBindInterface( | 32 void ServiceImpl::OnBindInterface( |
36 const service_manager::ServiceInfo& source_info, | 33 const service_manager::ServiceInfo& source_info, |
37 const std::string& interface_name, | 34 const std::string& interface_name, |
38 mojo::ScopedMessagePipeHandle interface_pipe) { | 35 mojo::ScopedMessagePipeHandle interface_pipe) { |
| 36 DVLOG(3) << "Service Connecting"; |
39 registry_.BindInterface(source_info.identity, interface_name, | 37 registry_.BindInterface(source_info.identity, interface_name, |
40 std::move(interface_pipe)); | 38 std::move(interface_pipe)); |
41 } | 39 } |
42 | 40 |
43 void ServiceImpl::Create(const service_manager::Identity& remote_identity, | 41 bool ServiceImpl::OnServiceManagerConnectionLost() { |
44 mojom::ServiceRequest request) { | 42 DVLOG(3) << "Service Stopping"; |
45 service_bindings_.AddBinding(this, std::move(request)); | 43 return true; |
46 } | 44 } |
47 | 45 |
48 void ServiceImpl::ConnectToDeviceFactory(mojom::DeviceFactoryRequest request) { | 46 void ServiceImpl::OnDeviceFactoryProviderRequest( |
49 LazyInitializeDeviceFactory(); | 47 mojom::DeviceFactoryProviderRequest request) { |
50 factory_bindings_.AddBinding(device_factory_.get(), std::move(request)); | 48 mojo::MakeStrongBinding( |
| 49 base::MakeUnique<DeviceFactoryProviderImpl>( |
| 50 ref_factory_->CreateRef(), |
| 51 // Use of unretained |this| is safe, because the |
| 52 // VideoCaptureServiceImpl has shared ownership of |this| via the |
| 53 // reference created by ref_factory->CreateRef(). |
| 54 base::Bind(&ServiceImpl::SetShutdownDelayInSeconds, |
| 55 base::Unretained(this))), |
| 56 std::move(request)); |
51 } | 57 } |
52 | 58 |
53 void ServiceImpl::ConnectToFakeDeviceFactory( | 59 void ServiceImpl::SetShutdownDelayInSeconds(float seconds) { |
54 mojom::DeviceFactoryRequest request) { | 60 DVLOG(3) << "Shutdown delay set to " << seconds << " seconds."; |
55 LazyInitializeFakeDeviceFactory(); | 61 shutdown_delay_in_seconds_ = seconds; |
56 fake_factory_bindings_.AddBinding(fake_device_factory_.get(), | |
57 std::move(request)); | |
58 } | 62 } |
59 | 63 |
60 void ServiceImpl::LazyInitializeDeviceFactory() { | 64 void ServiceImpl::MaybeRequestQuitDelayed() { |
61 if (device_factory_) | 65 DVLOG(3) << "Scheduling service to quit"; |
62 return; | 66 base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
63 | 67 FROM_HERE, |
64 // Create the platform-specific device factory. | 68 base::Bind(&ServiceImpl::MaybeRequestQuit, weak_factory_.GetWeakPtr()), |
65 // Task runner does not seem to actually be used. | 69 base::TimeDelta::FromSeconds(shutdown_delay_in_seconds_)); |
66 std::unique_ptr<media::VideoCaptureDeviceFactory> media_device_factory = | |
67 media::VideoCaptureDeviceFactory::CreateFactory( | |
68 base::MessageLoop::current()->task_runner()); | |
69 auto video_capture_system = base::MakeUnique<media::VideoCaptureSystemImpl>( | |
70 std::move(media_device_factory)); | |
71 | |
72 device_factory_ = base::MakeUnique<DeviceFactoryMediaToMojoAdapter>( | |
73 std::move(video_capture_system), base::Bind(CreateJpegDecoder)); | |
74 } | 70 } |
75 | 71 |
76 void ServiceImpl::LazyInitializeFakeDeviceFactory() { | 72 void ServiceImpl::MaybeRequestQuit() { |
77 if (fake_device_factory_) | 73 DCHECK(ref_factory_); |
78 return; | 74 if (ref_factory_->HasNoRefs()) { |
79 | 75 DVLOG(3) << "Service gonna quit now"; |
80 auto factory = base::MakeUnique<media::FakeVideoCaptureDeviceFactory>(); | 76 context()->RequestQuit(); |
81 auto video_capture_system = | 77 } else { |
82 base::MakeUnique<media::VideoCaptureSystemImpl>(std::move(factory)); | 78 DVLOG(3) << "Service no longer quitting"; |
83 | 79 } |
84 fake_device_factory_ = base::MakeUnique<DeviceFactoryMediaToMojoAdapter>( | |
85 std::move(video_capture_system), base::Bind(&CreateJpegDecoder)); | |
86 } | 80 } |
87 | 81 |
88 } // namespace video_capture | 82 } // namespace video_capture |
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