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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // VideoCaptureManager is used to open/close, start/stop, enumerate available | 5 // VideoCaptureManager is used to open/close, start/stop, enumerate available |
| 6 // video capture devices, and manage VideoCaptureController's. | 6 // video capture devices, and manage VideoCaptureController's. |
| 7 // All functions are expected to be called from Browser::IO thread. Some helper | 7 // All functions are expected to be called from Browser::IO thread. Some helper |
| 8 // functions (*OnDeviceThread) will dispatch operations to the device thread. | 8 // functions (*OnDeviceThread) will dispatch operations to the device thread. |
| 9 // VideoCaptureManager will open OS dependent instances of VideoCaptureDevice. | 9 // VideoCaptureManager will open OS dependent instances of VideoCaptureDevice. |
| 10 // A device can only be opened once. | 10 // A device can only be opened once. |
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| 39 // Callback used to signal the completion of a controller lookup. | 39 // Callback used to signal the completion of a controller lookup. |
| 40 typedef base::Callback< | 40 typedef base::Callback< |
| 41 void(const base::WeakPtr<VideoCaptureController>&)> DoneCB; | 41 void(const base::WeakPtr<VideoCaptureController>&)> DoneCB; |
| 42 | 42 |
| 43 explicit VideoCaptureManager( | 43 explicit VideoCaptureManager( |
| 44 scoped_ptr<media::VideoCaptureDeviceFactory> factory); | 44 scoped_ptr<media::VideoCaptureDeviceFactory> factory); |
| 45 | 45 |
| 46 // Implements MediaStreamProvider. | 46 // Implements MediaStreamProvider. |
| 47 virtual void Register(MediaStreamProviderListener* listener, | 47 virtual void Register(MediaStreamProviderListener* listener, |
| 48 const scoped_refptr<base::SingleThreadTaskRunner>& | 48 const scoped_refptr<base::SingleThreadTaskRunner>& |
| 49 device_task_runner) OVERRIDE; | 49 device_task_runner) override; |
| 50 | 50 |
| 51 virtual void Unregister() OVERRIDE; | 51 virtual void Unregister() override; |
| 52 | 52 |
| 53 virtual void EnumerateDevices(MediaStreamType stream_type) OVERRIDE; | 53 virtual void EnumerateDevices(MediaStreamType stream_type) override; |
| 54 | 54 |
| 55 virtual int Open(const StreamDeviceInfo& device) OVERRIDE; | 55 virtual int Open(const StreamDeviceInfo& device) override; |
| 56 | 56 |
| 57 virtual void Close(int capture_session_id) OVERRIDE; | 57 virtual void Close(int capture_session_id) override; |
| 58 | 58 |
| 59 // Called by VideoCaptureHost to locate a capture device for |capture_params|, | 59 // Called by VideoCaptureHost to locate a capture device for |capture_params|, |
| 60 // adding the Host as a client of the device's controller if successful. The | 60 // adding the Host as a client of the device's controller if successful. The |
| 61 // value of |session_id| controls which device is selected; | 61 // value of |session_id| controls which device is selected; |
| 62 // this value should be a session id previously returned by Open(). | 62 // this value should be a session id previously returned by Open(). |
| 63 // | 63 // |
| 64 // If the device is not already started (i.e., no other client is currently | 64 // If the device is not already started (i.e., no other client is currently |
| 65 // capturing from this device), this call will cause a VideoCaptureController | 65 // capturing from this device), this call will cause a VideoCaptureController |
| 66 // and VideoCaptureDevice to be created, possibly asynchronously. | 66 // and VideoCaptureDevice to be created, possibly asynchronously. |
| 67 // | 67 // |
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| 265 // Accessed on the device thread only. | 265 // Accessed on the device thread only. |
| 266 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> | 266 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> |
| 267 notification_window_ids_; | 267 notification_window_ids_; |
| 268 | 268 |
| 269 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); | 269 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); |
| 270 }; | 270 }; |
| 271 | 271 |
| 272 } // namespace content | 272 } // namespace content |
| 273 | 273 |
| 274 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ | 274 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ |
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