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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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