| /* |
| * Copyright 2018 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef CAMERA_COMMON_CAMERA_MOJO_CHANNEL_MANAGER_IMPL_H_ |
| #define CAMERA_COMMON_CAMERA_MOJO_CHANNEL_MANAGER_IMPL_H_ |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include <base/files/file_path_watcher.h> |
| #include <base/no_destructor.h> |
| #include <base/synchronization/lock.h> |
| #include <base/threading/thread.h> |
| #include <mojo/core/embedder/scoped_ipc_support.h> |
| |
| #include "cros-camera/camera_mojo_channel_manager.h" |
| #include "cros-camera/future.h" |
| #include "mojo/cros_camera_service.mojom.h" |
| |
| namespace cros { |
| |
| class CameraMojoChannelManagerImpl final : public CameraMojoChannelManager { |
| public: |
| CameraMojoChannelManagerImpl(); |
| ~CameraMojoChannelManagerImpl(); |
| |
| // CameraMojoChannelManager implementations. |
| |
| scoped_refptr<base::SingleThreadTaskRunner> GetIpcTaskRunner(); |
| |
| void RegisterServer(mojom::CameraHalServerPtr hal_ptr, |
| Callback on_construct_callback, |
| Callback on_error_callback); |
| |
| void CreateMjpegDecodeAccelerator( |
| mojom::MjpegDecodeAcceleratorRequest request, |
| Callback on_construct_callback, |
| Callback on_error_callback); |
| |
| void CreateJpegEncodeAccelerator(mojom::JpegEncodeAcceleratorRequest request, |
| Callback on_construct_callback, |
| Callback on_error_callback); |
| |
| mojom::CameraAlgorithmOpsPtr CreateCameraAlgorithmOpsPtr( |
| const std::string& socket_path, const std::string& pipe_name); |
| |
| protected: |
| friend class CameraMojoChannelManager; |
| |
| // Thread for IPC chores. |
| base::Thread ipc_thread_; |
| |
| private: |
| template <typename T> |
| struct PendingMojoRequest { |
| T requestOrPtr; |
| Callback on_construct_callback; |
| Callback on_error_callback; |
| }; |
| |
| void OnSocketFileStatusChange(const base::FilePath& socket_path, bool error); |
| |
| // Callback method for the unix domain socket file change events. The method |
| // will try to establish the Mojo connection to the CameraHalDispatcher |
| // started by Chrome. |
| void OnSocketFileStatusChangeOnIpcThread(); |
| |
| void TryConnectToDispatcher(); |
| |
| void TryConsumePendingMojoRequests(); |
| |
| void TearDownMojoEnvOnIpcThread(); |
| |
| // Reset the dispatcher. |
| void ResetDispatcherPtr(); |
| |
| // The Mojo channel to CameraHalDispatcher in Chrome. All the Mojo |
| // communication to |dispatcher_| happens on |ipc_thread_|. |
| mojom::CameraHalDispatcherPtr dispatcher_; |
| std::unique_ptr<mojo::core::ScopedIPCSupport> ipc_support_; |
| |
| // Watches for change events on the unix domain socket file created by Chrome. |
| // Upon file change OnSocketFileStatusChange will be called to initiate |
| // connection to CameraHalDispatcher. |
| base::FilePathWatcher watcher_; |
| |
| // Inode number of current bound socket file. |
| ino_t bound_socket_inode_num_; |
| |
| // Pending Mojo requests information which should be consumed when the |
| // |dispatcher_| is connected. |
| PendingMojoRequest<mojom::CameraHalServerPtr> camera_hal_server_request_; |
| std::vector<PendingMojoRequest<mojom::JpegEncodeAcceleratorRequest>> |
| jea_requests_; |
| std::vector<PendingMojoRequest<mojom::MjpegDecodeAcceleratorRequest>> |
| jda_requests_; |
| |
| // TODO(b/151270948): Remove this static variable once we implemnet CrOS |
| // specific interface on all camera HALs. |
| static CameraMojoChannelManagerImpl* instance_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CameraMojoChannelManagerImpl); |
| }; |
| |
| } // namespace cros |
| #endif // CAMERA_COMMON_CAMERA_MOJO_CHANNEL_MANAGER_IMPL_H_ |