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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 #ifndef MEDIA_CAPTURE_VIDEO_CHROMEOS_VIDEO_CAPTURE_DEVICE_ARC_CHROMEOS_H_ | |
| 6 #define MEDIA_CAPTURE_VIDEO_CHROMEOS_VIDEO_CAPTURE_DEVICE_ARC_CHROMEOS_H_ | |
| 7 | |
| 8 #include <memory> | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "base/threading/thread.h" | |
| 12 #include "media/capture/video/chromeos/display_rotation_observer.h" | |
| 13 #include "media/capture/video/chromeos/mojo/arc_camera3.mojom.h" | |
| 14 #include "media/capture/video/video_capture_device.h" | |
| 15 #include "media/capture/video/video_capture_device_descriptor.h" | |
| 16 #include "media/capture/video_capture_types.h" | |
| 17 | |
| 18 namespace display { | |
| 19 | |
| 20 class Display; | |
| 21 | |
| 22 } // namespace display | |
| 23 | |
| 24 namespace media { | |
| 25 | |
| 26 class CameraHalDelegate; | |
| 27 class CameraDeviceDelegate; | |
| 28 | |
| 29 // Implementation of VideoCaptureDevice for ChromeOS with ARC++ camera HALv3. | |
| 30 class CAPTURE_EXPORT VideoCaptureDeviceArcChromeOS final | |
| 31 : public VideoCaptureDevice, | |
| 32 public DisplayRotationObserver { | |
| 33 public: | |
| 34 VideoCaptureDeviceArcChromeOS( | |
| 35 scoped_refptr<base::SingleThreadTaskRunner> | |
| 36 task_runner_for_screen_observer, | |
| 37 const VideoCaptureDeviceDescriptor& device_descriptor, | |
| 38 scoped_refptr<CameraHalDelegate> camera_hal_delegate); | |
| 39 | |
| 40 ~VideoCaptureDeviceArcChromeOS() final; | |
| 41 | |
| 42 // VideoCaptureDevice implementation. | |
| 43 void AllocateAndStart(const VideoCaptureParams& params, | |
| 44 std::unique_ptr<Client> client) final; | |
| 45 void StopAndDeAllocate() final; | |
| 46 void TakePhoto(TakePhotoCallback callback) final; | |
| 47 void GetPhotoState(GetPhotoStateCallback callback) final; | |
| 48 void SetPhotoOptions(mojom::PhotoSettingsPtr settings, | |
| 49 SetPhotoOptionsCallback callback) final; | |
| 50 | |
| 51 private: | |
| 52 // DisplayRotationDelegate implementation. | |
| 53 void SetDisplayRotation(const display::Display& display) final; | |
| 54 void SetRotation(int rotation); | |
| 55 | |
| 56 const VideoCaptureDeviceDescriptor device_descriptor_; | |
| 57 | |
| 58 // A reference to the CameraHalDelegate instance in the VCD factory. This is | |
| 59 // used by AllocateAndStart to query camera info and create the camera device. | |
| 60 const scoped_refptr<CameraHalDelegate> camera_hal_delegate_; | |
| 61 | |
| 62 // A reference to the thread that all the VideoCaptureDevice interface methods | |
| 63 // are expected to be called on. | |
| 64 const scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner_; | |
| 65 | |
| 66 // The thread that all the Mojo operations of |camera_device_delegate_| take | |
| 67 // place. Started in AllocateAndStart and stopped in StopAndDeAllocate, where | |
| 68 // the access to the base::Thread methods are sequenced on | |
| 69 // |capture_task_runner_|. | |
| 70 base::Thread camera_device_ipc_thread_; | |
| 71 | |
| 72 // Internal delegate doing the actual capture setting, buffer allocation and | |
| 73 // circulation with the camera HAL. Created in AllocateAndStart and deleted in | |
| 74 // StopAndDeAllocate on |capture_task_runner_|. All methods of | |
| 75 // |camera_device_delegate_| operate on |camera_device_ipc_thread_|. | |
| 76 std::unique_ptr<CameraDeviceDelegate> camera_device_delegate_; | |
| 77 | |
| 78 scoped_refptr<ScreenObserverDelegate> screen_observer_delegate_; | |
| 79 const VideoFacingMode lens_facing_; | |
| 80 const int camera_orientation_; | |
| 81 // Whether the incoming frames should rotate when the device rotates. | |
| 82 const bool rotates_with_device_; | |
| 83 int rotation_; | |
| 84 | |
| 85 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceArcChromeOS); | |
| 86 }; | |
| 87 | |
| 88 } // namespace media | |
| 89 | |
| 90 #endif // MEDIA_CAPTURE_VIDEO_CHROMEOS_VIDEO_CAPTURE_DEVICE_ARC_CHROMEOS_H_ | |
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