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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 // Windows specific implementation of VideoCaptureDevice. | 5 // Windows specific implementation of VideoCaptureDevice. |
| 6 // DirectShow is used for capturing. DirectShow provide its own threads | 6 // DirectShow is used for capturing. DirectShow provide its own threads |
| 7 // for capturing. | 7 // for capturing. |
| 8 | 8 |
| 9 #ifndef MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ | 9 #ifndef MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ |
| 10 #define MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ | 10 #define MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ |
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| 33 public VideoCaptureDevice, | 33 public VideoCaptureDevice, |
| 34 public SinkFilterObserver { | 34 public SinkFilterObserver { |
| 35 public: | 35 public: |
| 36 explicit VideoCaptureDeviceWin(const Name& device_name); | 36 explicit VideoCaptureDeviceWin(const Name& device_name); |
| 37 virtual ~VideoCaptureDeviceWin(); | 37 virtual ~VideoCaptureDeviceWin(); |
| 38 // Opens the device driver for this device. | 38 // Opens the device driver for this device. |
| 39 // This function is used by the static VideoCaptureDevice::Create function. | 39 // This function is used by the static VideoCaptureDevice::Create function. |
| 40 bool Init(); | 40 bool Init(); |
| 41 | 41 |
| 42 // VideoCaptureDevice implementation. | 42 // VideoCaptureDevice implementation. |
| 43 virtual void AllocateAndStart( | 43 virtual void AllocateAndStart(const VideoCaptureParams& params, |
| 44 const VideoCaptureCapability& capture_format, | 44 scoped_ptr<VideoCaptureDevice::Client> client) |
| 45 scoped_ptr<VideoCaptureDevice::Client> client) OVERRIDE; | 45 OVERRIDE; |
| 46 virtual void StopAndDeAllocate() OVERRIDE; | 46 virtual void StopAndDeAllocate() OVERRIDE; |
| 47 | 47 |
| 48 static void GetDeviceNames(Names* device_names); | 48 static void GetDeviceNames(Names* device_names); |
| 49 | 49 |
| 50 private: | 50 private: |
| 51 enum InternalState { | 51 enum InternalState { |
| 52 kIdle, // The device driver is opened but camera is not in use. | 52 kIdle, // The device driver is opened but camera is not in use. |
| 53 kCapturing, // Video is being captured. | 53 kCapturing, // Video is being captured. |
| 54 kError // Error accessing HW functions. | 54 kError // Error accessing HW functions. |
| 55 // User needs to recover by destroying the object. | 55 // User needs to recover by destroying the object. |
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| 72 base::win::ScopedComPtr<IPin> output_capture_pin_; | 72 base::win::ScopedComPtr<IPin> output_capture_pin_; |
| 73 // Used when using a MJPEG decoder. | 73 // Used when using a MJPEG decoder. |
| 74 base::win::ScopedComPtr<IBaseFilter> mjpg_filter_; | 74 base::win::ScopedComPtr<IBaseFilter> mjpg_filter_; |
| 75 base::win::ScopedComPtr<IPin> input_mjpg_pin_; | 75 base::win::ScopedComPtr<IPin> input_mjpg_pin_; |
| 76 base::win::ScopedComPtr<IPin> output_mjpg_pin_; | 76 base::win::ScopedComPtr<IPin> output_mjpg_pin_; |
| 77 | 77 |
| 78 scoped_refptr<SinkFilter> sink_filter_; | 78 scoped_refptr<SinkFilter> sink_filter_; |
| 79 | 79 |
| 80 // Map of all capabilities this device support. | 80 // Map of all capabilities this device support. |
| 81 CapabilityList capabilities_; | 81 CapabilityList capabilities_; |
| 82 VideoCaptureCapability current_setting_; | 82 VideoCaptureFormat capture_format_; |
| 83 | 83 |
| 84 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceWin); | 84 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceWin); |
| 85 }; | 85 }; |
| 86 | 86 |
| 87 } // namespace media | 87 } // namespace media |
| 88 | 88 |
| 89 #endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ | 89 #endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ |
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