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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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