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Side by Side Diff: content/browser/renderer_host/media/video_capture_manager.h

Issue 2551193002: [Mojo Video Capture] Decouple VCController from VCBufferPool and VCDeviceClient (Closed)
Patch Set: Added TODO comment Created 4 years ago
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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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167 // is hidden, see http://crbug.com/582295. 167 // is hidden, see http://crbug.com/582295.
168 void OnApplicationStateChange(base::android::ApplicationState state); 168 void OnApplicationStateChange(base::android::ApplicationState state);
169 #endif 169 #endif
170 170
171 using EnumerationCallback = 171 using EnumerationCallback =
172 base::Callback<void(const media::VideoCaptureDeviceDescriptors&)>; 172 base::Callback<void(const media::VideoCaptureDeviceDescriptors&)>;
173 void EnumerateDevices(const EnumerationCallback& client_callback); 173 void EnumerateDevices(const EnumerationCallback& client_callback);
174 174
175 private: 175 private:
176 class CaptureDeviceStartRequest; 176 class CaptureDeviceStartRequest;
177 class DeviceEntry; 177 struct DeviceEntry;
178 struct DeviceInfo; 178 struct DeviceInfo;
179 179
180 using SessionMap = std::map<media::VideoCaptureSessionId, MediaStreamDevice>; 180 using SessionMap = std::map<media::VideoCaptureSessionId, MediaStreamDevice>;
181 using DeviceEntries = std::vector<std::unique_ptr<DeviceEntry>>; 181 using DeviceEntries = std::vector<std::unique_ptr<DeviceEntry>>;
182 using DeviceInfos = std::vector<DeviceInfo>; 182 using DeviceInfos = std::vector<DeviceInfo>;
183 using DeviceStartQueue = std::list<CaptureDeviceStartRequest>; 183 using DeviceStartQueue = std::list<CaptureDeviceStartRequest>;
184 using VideoCaptureDeviceDescriptor = media::VideoCaptureDeviceDescriptor; 184 using VideoCaptureDeviceDescriptor = media::VideoCaptureDeviceDescriptor;
185 using VideoCaptureDeviceDescriptors = media::VideoCaptureDeviceDescriptors; 185 using VideoCaptureDeviceDescriptors = media::VideoCaptureDeviceDescriptors;
186 186
187 ~VideoCaptureManager() override; 187 ~VideoCaptureManager() override;
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232 232
233 // Starting a capture device can take 1-2 seconds. 233 // Starting a capture device can take 1-2 seconds.
234 // To avoid multiple unnecessary start/stop commands to the OS, each start 234 // To avoid multiple unnecessary start/stop commands to the OS, each start
235 // request is queued in |device_start_queue_|. 235 // request is queued in |device_start_queue_|.
236 // QueueStartDevice creates a new entry in |device_start_queue_| and posts a 236 // QueueStartDevice creates a new entry in |device_start_queue_| and posts a
237 // request to start the device on the device thread unless there is 237 // request to start the device on the device thread unless there is
238 // another request pending start. 238 // another request pending start.
239 void QueueStartDevice(media::VideoCaptureSessionId session_id, 239 void QueueStartDevice(media::VideoCaptureSessionId session_id,
240 DeviceEntry* entry, 240 DeviceEntry* entry,
241 const media::VideoCaptureParams& params); 241 const media::VideoCaptureParams& params);
242 void OnDeviceStarted(int serial_id, 242 void OnDeviceStarted(
243 std::unique_ptr<VideoCaptureDevice> device); 243 int serial_id,
244 std::unique_ptr<media::FrameBufferPool> frame_buffer_pool,
245 std::unique_ptr<VideoCaptureDevice> device);
244 void DoStopDevice(DeviceEntry* entry); 246 void DoStopDevice(DeviceEntry* entry);
245 void HandleQueuedStartRequest(); 247 void HandleQueuedStartRequest();
246 248
247 // Creates and Starts a new VideoCaptureDevice. The resulting 249 // Creates and Starts a new VideoCaptureDevice. The resulting
248 // VideoCaptureDevice is returned to the IO-thread and stored in 250 // VideoCaptureDevice is returned to the IO-thread and stored in
249 // a DeviceEntry in |devices_|. Ownership of |client| passes to 251 // a DeviceEntry in |devices_|. Ownership of |client| passes to
250 // the device. 252 // the device.
251 std::unique_ptr<VideoCaptureDevice> DoStartDeviceCaptureOnDeviceThread( 253 std::unique_ptr<VideoCaptureDevice> DoStartDeviceCaptureOnDeviceThread(
252 const VideoCaptureDeviceDescriptor& descriptor, 254 const VideoCaptureDeviceDescriptor& descriptor,
253 const media::VideoCaptureParams& params, 255 const media::VideoCaptureParams& params,
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333 // Map used by DesktopCapture. 335 // Map used by DesktopCapture.
334 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> 336 std::map<media::VideoCaptureSessionId, gfx::NativeViewId>
335 notification_window_ids_; 337 notification_window_ids_;
336 338
337 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); 339 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager);
338 }; 340 };
339 341
340 } // namespace content 342 } // namespace content
341 343
342 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ 344 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_
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