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| 1 // Copyright 2017 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 "content/browser/renderer_host/media/mojo_service_video_capture_provide
r.h" |
| 6 |
| 7 #include "content/browser/renderer_host/media/mojo_service_video_capture_device_
launcher.h" |
| 8 #include "content/public/browser/browser_thread.h" |
| 9 #include "content/public/common/service_manager_connection.h" |
| 10 #include "services/service_manager/public/cpp/connector.h" |
| 11 #include "services/video_capture/public/interfaces/constants.mojom.h" |
| 12 |
| 13 namespace { |
| 14 |
| 15 void BindToBrowserConnector(service_manager::mojom::ConnectorRequest request) { |
| 16 if (!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)) { |
| 17 content::BrowserThread::PostTask( |
| 18 content::BrowserThread::UI, FROM_HERE, |
| 19 base::Bind(&BindToBrowserConnector, base::Passed(&request))); |
| 20 return; |
| 21 } |
| 22 |
| 23 content::ServiceManagerConnection::GetForProcess() |
| 24 ->GetConnector() |
| 25 ->BindConnectorRequest(std::move(request)); |
| 26 } |
| 27 |
| 28 } // namespace |
| 29 |
| 30 namespace content { |
| 31 |
| 32 MojoServiceVideoCaptureProvider::MojoServiceVideoCaptureProvider() = default; |
| 33 |
| 34 MojoServiceVideoCaptureProvider::~MojoServiceVideoCaptureProvider() { |
| 35 DCHECK(thread_checker_.CalledOnValidThread()); |
| 36 } |
| 37 |
| 38 void MojoServiceVideoCaptureProvider::Uninitialize() { |
| 39 DCHECK(thread_checker_.CalledOnValidThread()); |
| 40 device_factory_.reset(); |
| 41 device_factory_provider_.reset(); |
| 42 } |
| 43 |
| 44 void MojoServiceVideoCaptureProvider::GetDeviceInfosAsync( |
| 45 const base::Callback<void( |
| 46 const std::vector<media::VideoCaptureDeviceInfo>&)>& result_callback) { |
| 47 DCHECK(thread_checker_.CalledOnValidThread()); |
| 48 LazyConnectToService(); |
| 49 device_factory_->GetDeviceInfos(result_callback); |
| 50 } |
| 51 |
| 52 std::unique_ptr<VideoCaptureDeviceLauncher> |
| 53 MojoServiceVideoCaptureProvider::CreateDeviceLauncher() { |
| 54 DCHECK(thread_checker_.CalledOnValidThread()); |
| 55 LazyConnectToService(); |
| 56 return base::MakeUnique<MojoServiceVideoCaptureDeviceLauncher>( |
| 57 &device_factory_); |
| 58 } |
| 59 |
| 60 void MojoServiceVideoCaptureProvider::LazyConnectToService() { |
| 61 if (device_factory_provider_.is_bound()) |
| 62 return; |
| 63 |
| 64 service_manager::mojom::ConnectorRequest connector_request; |
| 65 std::unique_ptr<service_manager::Connector> connector = |
| 66 service_manager::Connector::Create(&connector_request); |
| 67 BindToBrowserConnector(std::move(connector_request)); |
| 68 |
| 69 connector->BindInterface(video_capture::mojom::kServiceName, |
| 70 &device_factory_provider_); |
| 71 device_factory_provider_->ConnectToDeviceFactory( |
| 72 mojo::MakeRequest(&device_factory_)); |
| 73 // Unretained |this| is safe, because |this| owns |device_factory_|. |
| 74 device_factory_.set_connection_error_handler(base::Bind( |
| 75 &MojoServiceVideoCaptureProvider::OnLostConnectionToDeviceFactory, |
| 76 base::Unretained(this))); |
| 77 } |
| 78 |
| 79 void MojoServiceVideoCaptureProvider::OnLostConnectionToDeviceFactory() { |
| 80 DCHECK(thread_checker_.CalledOnValidThread()); |
| 81 // This may indicate that the video capture service has |
| 82 // crashed. Uninitialize here, so that a new connection will be established |
| 83 // clients try to reconnect. |
| 84 Uninitialize(); |
| 85 } |
| 86 |
| 87 } // namespace content |
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