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| 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 "chrome/browser/chromeos/arc/gpu_arc_video_service_host.h" | |
| 6 | |
| 7 #include <string> | |
| 8 #include <utility> | |
| 9 | |
| 10 #include "base/location.h" | |
| 11 #include "base/logging.h" | |
| 12 #include "base/message_loop/message_loop.h" | |
| 13 #include "base/threading/thread_task_runner_handle.h" | |
| 14 #include "components/arc/arc_bridge_service.h" | |
| 15 #include "components/arc/common/video_accelerator.mojom.h" | |
| 16 #include "content/public/browser/browser_thread.h" | |
| 17 #include "content/public/browser/gpu_service_registry.h" | |
| 18 #include "mojo/edk/embedder/embedder.h" | |
| 19 #include "mojo/edk/embedder/platform_channel_pair.h" | |
| 20 #include "mojo/public/cpp/bindings/strong_binding.h" | |
| 21 #include "services/service_manager/public/cpp/interface_provider.h" | |
| 22 | |
| 23 namespace arc { | |
| 24 | |
| 25 namespace { | |
| 26 | |
| 27 void DeprecatedConnectToVideoAcceleratorServiceOnIOThread( | |
| 28 mojom::VideoAcceleratorServiceClientRequest request) { | |
| 29 // Note |request| is not a ServiceRequest. It is a ClientRequest but doesn't | |
| 30 // request for a Client. Instead, it requests for a Service while specified | |
| 31 // the client. It works this odd way because the interfaces were modeled as | |
| 32 // arc's "Host notifies to Instance::Init", not mojo's typical "Client | |
| 33 // registers to Service". | |
| 34 // TODO(kcwu): revise the interface. | |
| 35 content::GetGpuRemoteInterfaces()->GetInterface(std::move(request)); | |
| 36 } | |
| 37 | |
| 38 void ConnectToVideoAcceleratorServiceOnIOThread( | |
| 39 mojom::VideoAcceleratorServiceRequest request) { | |
| 40 content::GetGpuRemoteInterfaces()->GetInterface(std::move(request)); | |
| 41 } | |
| 42 | |
| 43 } // namespace | |
| 44 | |
| 45 class VideoAcceleratorFactoryService : public mojom::VideoAcceleratorFactory { | |
| 46 public: | |
| 47 VideoAcceleratorFactoryService() = default; | |
| 48 | |
| 49 void Create(mojom::VideoAcceleratorServiceRequest request) override { | |
| 50 content::BrowserThread::PostTask( | |
| 51 content::BrowserThread::IO, FROM_HERE, | |
| 52 base::Bind(&ConnectToVideoAcceleratorServiceOnIOThread, | |
| 53 base::Passed(&request))); | |
| 54 } | |
| 55 | |
| 56 private: | |
| 57 DISALLOW_COPY_AND_ASSIGN(VideoAcceleratorFactoryService); | |
| 58 }; | |
| 59 | |
| 60 GpuArcVideoServiceHost::GpuArcVideoServiceHost(ArcBridgeService* bridge_service) | |
| 61 : ArcService(bridge_service), binding_(this) { | |
| 62 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 63 arc_bridge_service()->video()->AddObserver(this); | |
| 64 } | |
| 65 | |
| 66 GpuArcVideoServiceHost::~GpuArcVideoServiceHost() { | |
| 67 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 68 arc_bridge_service()->video()->RemoveObserver(this); | |
| 69 } | |
| 70 | |
| 71 void GpuArcVideoServiceHost::OnInstanceReady() { | |
| 72 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 73 auto* video_instance = | |
| 74 arc_bridge_service()->video()->GetInstanceForMethod("Init"); | |
| 75 DCHECK(video_instance); | |
| 76 video_instance->Init(binding_.CreateInterfacePtrAndBind()); | |
| 77 } | |
| 78 | |
| 79 void GpuArcVideoServiceHost::DeprecatedOnRequestArcVideoAcceleratorChannel( | |
| 80 const DeprecatedOnRequestArcVideoAcceleratorChannelCallback& callback) { | |
| 81 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 82 | |
| 83 // Hardcode pid 0 since it is unused in mojo. | |
| 84 const base::ProcessHandle kUnusedChildProcessHandle = | |
| 85 base::kNullProcessHandle; | |
| 86 mojo::edk::PlatformChannelPair channel_pair; | |
| 87 std::string child_token = mojo::edk::GenerateRandomToken(); | |
| 88 mojo::edk::ChildProcessLaunched(kUnusedChildProcessHandle, | |
| 89 channel_pair.PassServerHandle(), child_token); | |
| 90 | |
| 91 MojoHandle wrapped_handle; | |
| 92 MojoResult wrap_result = mojo::edk::CreatePlatformHandleWrapper( | |
| 93 channel_pair.PassClientHandle(), &wrapped_handle); | |
| 94 if (wrap_result != MOJO_RESULT_OK) { | |
| 95 LOG(ERROR) << "Pipe failed to wrap handles. Closing: " << wrap_result; | |
| 96 callback.Run(mojo::ScopedHandle(), std::string()); | |
| 97 return; | |
| 98 } | |
| 99 mojo::ScopedHandle child_handle{mojo::Handle(wrapped_handle)}; | |
| 100 | |
| 101 std::string token = mojo::edk::GenerateRandomToken(); | |
| 102 mojo::ScopedMessagePipeHandle server_pipe = | |
| 103 mojo::edk::CreateParentMessagePipe(token, child_token); | |
| 104 if (!server_pipe.is_valid()) { | |
| 105 LOG(ERROR) << "Invalid pipe"; | |
| 106 callback.Run(mojo::ScopedHandle(), std::string()); | |
| 107 return; | |
| 108 } | |
| 109 callback.Run(std::move(child_handle), token); | |
| 110 | |
| 111 content::BrowserThread::PostTask( | |
| 112 content::BrowserThread::IO, FROM_HERE, | |
| 113 base::Bind( | |
| 114 &DeprecatedConnectToVideoAcceleratorServiceOnIOThread, | |
| 115 base::Passed(mojo::MakeRequest<mojom::VideoAcceleratorServiceClient>( | |
| 116 std::move(server_pipe))))); | |
| 117 } | |
| 118 | |
| 119 void GpuArcVideoServiceHost::OnBootstrapVideoAcceleratorFactory( | |
| 120 const OnBootstrapVideoAcceleratorFactoryCallback& callback) { | |
| 121 DCHECK_CURRENTLY_ON(content::BrowserThread::UI); | |
| 122 | |
| 123 // Hardcode pid 0 since it is unused in mojo. | |
| 124 const base::ProcessHandle kUnusedChildProcessHandle = | |
| 125 base::kNullProcessHandle; | |
| 126 mojo::edk::PlatformChannelPair channel_pair; | |
| 127 std::string child_token = mojo::edk::GenerateRandomToken(); | |
| 128 mojo::edk::ChildProcessLaunched(kUnusedChildProcessHandle, | |
| 129 channel_pair.PassServerHandle(), child_token); | |
| 130 | |
| 131 MojoHandle wrapped_handle; | |
| 132 MojoResult wrap_result = mojo::edk::CreatePlatformHandleWrapper( | |
| 133 channel_pair.PassClientHandle(), &wrapped_handle); | |
| 134 if (wrap_result != MOJO_RESULT_OK) { | |
| 135 LOG(ERROR) << "Pipe failed to wrap handles. Closing: " << wrap_result; | |
| 136 callback.Run(mojo::ScopedHandle(), std::string()); | |
| 137 return; | |
| 138 } | |
| 139 mojo::ScopedHandle child_handle{mojo::Handle(wrapped_handle)}; | |
| 140 | |
| 141 std::string token = mojo::edk::GenerateRandomToken(); | |
| 142 mojo::ScopedMessagePipeHandle server_pipe = | |
| 143 mojo::edk::CreateParentMessagePipe(token, child_token); | |
| 144 if (!server_pipe.is_valid()) { | |
| 145 LOG(ERROR) << "Invalid pipe"; | |
| 146 callback.Run(mojo::ScopedHandle(), std::string()); | |
| 147 return; | |
| 148 } | |
| 149 callback.Run(std::move(child_handle), token); | |
| 150 | |
| 151 mojo::MakeStrongBinding(base::MakeUnique<VideoAcceleratorFactoryService>(), | |
| 152 mojo::MakeRequest<mojom::VideoAcceleratorFactory>( | |
| 153 std::move(server_pipe))); | |
| 154 } | |
| 155 | |
| 156 } // namespace arc | |
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