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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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69 // | 69 // |
70 // If the device is not already started (i.e., no other client is currently | 70 // If the device is not already started (i.e., no other client is currently |
71 // capturing from this device), this call will cause a VideoCaptureController | 71 // capturing from this device), this call will cause a VideoCaptureController |
72 // and VideoCaptureDevice to be created, possibly asynchronously. | 72 // and VideoCaptureDevice to be created, possibly asynchronously. |
73 // | 73 // |
74 // On success, the controller is returned via calling |done_cb|, indicating | 74 // On success, the controller is returned via calling |done_cb|, indicating |
75 // that the client was successfully added. A NULL controller is passed to | 75 // that the client was successfully added. A NULL controller is passed to |
76 // the callback on failure. | 76 // the callback on failure. |
77 void StartCaptureForClient(media::VideoCaptureSessionId session_id, | 77 void StartCaptureForClient(media::VideoCaptureSessionId session_id, |
78 const media::VideoCaptureParams& capture_params, | 78 const media::VideoCaptureParams& capture_params, |
79 base::ProcessHandle client_render_process, | |
80 VideoCaptureControllerID client_id, | 79 VideoCaptureControllerID client_id, |
81 VideoCaptureControllerEventHandler* client_handler, | 80 VideoCaptureControllerEventHandler* client_handler, |
82 const DoneCB& done_cb); | 81 const DoneCB& done_cb); |
83 | 82 |
84 // Called by VideoCaptureHost to remove |client_handler|. If this is the last | 83 // Called by VideoCaptureHost to remove |client_handler|. If this is the last |
85 // client of the device, the |controller| and its VideoCaptureDevice may be | 84 // client of the device, the |controller| and its VideoCaptureDevice may be |
86 // destroyed. The client must not access |controller| after calling this | 85 // destroyed. The client must not access |controller| after calling this |
87 // function. | 86 // function. |
88 void StopCaptureForClient(VideoCaptureController* controller, | 87 void StopCaptureForClient(VideoCaptureController* controller, |
89 VideoCaptureControllerID client_id, | 88 VideoCaptureControllerID client_id, |
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354 // Map used by DesktopCapture. | 353 // Map used by DesktopCapture. |
355 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> | 354 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> |
356 notification_window_ids_; | 355 notification_window_ids_; |
357 | 356 |
358 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); | 357 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); |
359 }; | 358 }; |
360 | 359 |
361 } // namespace content | 360 } // namespace content |
362 | 361 |
363 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ | 362 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ |
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