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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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173 void OnApplicationStateChange(base::android::ApplicationState state); | 173 void OnApplicationStateChange(base::android::ApplicationState state); |
174 #endif | 174 #endif |
175 | 175 |
176 private: | 176 private: |
177 class CaptureDeviceStartRequest; | 177 class CaptureDeviceStartRequest; |
178 class DeviceEntry; | 178 class DeviceEntry; |
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 DeviceStartQueue = std::list<CaptureDeviceStartRequest>; | 182 using DeviceStartQueue = std::list<CaptureDeviceStartRequest>; |
| 183 using VideoCaptureDeviceDescriptor = media::VideoCaptureDeviceDescriptor; |
| 184 using VideoCaptureDeviceDescriptors = media::VideoCaptureDeviceDescriptors; |
183 | 185 |
184 ~VideoCaptureManager() override; | 186 ~VideoCaptureManager() override; |
185 | 187 |
186 // Helpers to report an event to our Listener. | 188 // Helpers to report an event to our Listener. |
187 void OnOpened(MediaStreamType type, | 189 void OnOpened(MediaStreamType type, |
188 media::VideoCaptureSessionId capture_session_id); | 190 media::VideoCaptureSessionId capture_session_id); |
189 void OnClosed(MediaStreamType type, | 191 void OnClosed(MediaStreamType type, |
190 media::VideoCaptureSessionId capture_session_id); | 192 media::VideoCaptureSessionId capture_session_id); |
191 void OnDevicesInfoEnumerated( | 193 void OnDevicesInfoEnumerated( |
192 MediaStreamType stream_type, | 194 MediaStreamType stream_type, |
193 base::ElapsedTimer* timer, | 195 base::ElapsedTimer* timer, |
194 const media::VideoCaptureDeviceInfos& new_devices_info_cache); | 196 const media::VideoCaptureDeviceInfos& new_devices_info_cache); |
195 | 197 |
196 bool IsOnDeviceThread() const; | 198 bool IsOnDeviceThread() const; |
197 | 199 |
198 // Consolidates the cached devices list with the list of currently connected | 200 // Consolidates the cached devices list with the list of currently connected |
199 // devices in the system |names_snapshot|. Retrieves the supported formats of | 201 // devices in the system |names_snapshot|. Retrieves the supported formats of |
200 // the new devices and sends the new cache to OnDevicesInfoEnumerated(). | 202 // the new devices and sends the new cache to OnDevicesInfoEnumerated(). |
201 void ConsolidateDevicesInfoOnDeviceThread( | 203 void ConsolidateDevicesInfoOnDeviceThread( |
202 base::Callback<void(const media::VideoCaptureDeviceInfos&)> | 204 base::Callback<void(const media::VideoCaptureDeviceInfos&)> |
203 on_devices_enumerated_callback, | 205 on_devices_enumerated_callback, |
204 MediaStreamType stream_type, | 206 MediaStreamType stream_type, |
205 const media::VideoCaptureDeviceInfos& old_device_info_cache, | 207 const media::VideoCaptureDeviceInfos& old_device_info_cache, |
206 std::unique_ptr<VideoCaptureDevice::Names> names_snapshot); | 208 std::unique_ptr<VideoCaptureDeviceDescriptors> descriptors_snapshot); |
207 | 209 |
208 // Checks to see if |entry| has no clients left on its controller. If so, | 210 // Checks to see if |entry| has no clients left on its controller. If so, |
209 // remove it from the list of devices, and delete it asynchronously. |entry| | 211 // remove it from the list of devices, and delete it asynchronously. |entry| |
210 // may be freed by this function. | 212 // may be freed by this function. |
211 void DestroyDeviceEntryIfNoClients(DeviceEntry* entry); | 213 void DestroyDeviceEntryIfNoClients(DeviceEntry* entry); |
212 | 214 |
213 // Retrieve the VideoCaptureDevice associated to |session_id|, or nullptr | 215 // Retrieve the VideoCaptureDevice associated to |session_id|, or nullptr |
214 // if not found. | 216 // if not found. |
215 VideoCaptureDevice* GetVideoCaptureDeviceBySessionId(int session_id); | 217 VideoCaptureDevice* GetVideoCaptureDeviceBySessionId(int session_id); |
216 | 218 |
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245 void OnDeviceStarted(int serial_id, | 247 void OnDeviceStarted(int serial_id, |
246 std::unique_ptr<VideoCaptureDevice> device); | 248 std::unique_ptr<VideoCaptureDevice> device); |
247 void DoStopDevice(DeviceEntry* entry); | 249 void DoStopDevice(DeviceEntry* entry); |
248 void HandleQueuedStartRequest(); | 250 void HandleQueuedStartRequest(); |
249 | 251 |
250 // Creates and Starts a new VideoCaptureDevice. The resulting | 252 // Creates and Starts a new VideoCaptureDevice. The resulting |
251 // VideoCaptureDevice is returned to the IO-thread and stored in | 253 // VideoCaptureDevice is returned to the IO-thread and stored in |
252 // a DeviceEntry in |devices_|. Ownership of |client| passes to | 254 // a DeviceEntry in |devices_|. Ownership of |client| passes to |
253 // the device. | 255 // the device. |
254 std::unique_ptr<VideoCaptureDevice> DoStartDeviceCaptureOnDeviceThread( | 256 std::unique_ptr<VideoCaptureDevice> DoStartDeviceCaptureOnDeviceThread( |
255 const VideoCaptureDevice::Name& name, | 257 const VideoCaptureDeviceDescriptor& descriptor, |
256 const media::VideoCaptureParams& params, | 258 const media::VideoCaptureParams& params, |
257 std::unique_ptr<VideoCaptureDevice::Client> client); | 259 std::unique_ptr<VideoCaptureDevice::Client> client); |
258 | 260 |
259 std::unique_ptr<VideoCaptureDevice> DoStartTabCaptureOnDeviceThread( | 261 std::unique_ptr<VideoCaptureDevice> DoStartTabCaptureOnDeviceThread( |
260 const std::string& device_id, | 262 const std::string& device_id, |
261 const media::VideoCaptureParams& params, | 263 const media::VideoCaptureParams& params, |
262 std::unique_ptr<VideoCaptureDevice::Client> client); | 264 std::unique_ptr<VideoCaptureDevice::Client> client); |
263 | 265 |
264 std::unique_ptr<VideoCaptureDevice> DoStartDesktopCaptureOnDeviceThread( | 266 std::unique_ptr<VideoCaptureDevice> DoStartDesktopCaptureOnDeviceThread( |
265 const std::string& device_id, | 267 const std::string& device_id, |
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340 // Map used by DesktopCapture. | 342 // Map used by DesktopCapture. |
341 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> | 343 std::map<media::VideoCaptureSessionId, gfx::NativeViewId> |
342 notification_window_ids_; | 344 notification_window_ids_; |
343 | 345 |
344 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); | 346 DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager); |
345 }; | 347 }; |
346 | 348 |
347 } // namespace content | 349 } // namespace content |
348 | 350 |
349 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ | 351 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_ |
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