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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_MF_WIN_H_ | 9 #ifndef MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ |
10 #define MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ | 10 #define MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ |
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46 // Returns true iff the current platform supports the Media Foundation API | 46 // Returns true iff the current platform supports the Media Foundation API |
47 // and that the DLLs are available. On Vista this API is an optional download | 47 // and that the DLLs are available. On Vista this API is an optional download |
48 // but the API is advertised as a part of Windows 7 and onwards. However, | 48 // but the API is advertised as a part of Windows 7 and onwards. However, |
49 // we've seen that the required DLLs are not available in some Win7 | 49 // we've seen that the required DLLs are not available in some Win7 |
50 // distributions such as Windows 7 N and Windows 7 KN. | 50 // distributions such as Windows 7 N and Windows 7 KN. |
51 static bool PlatformSupported(); | 51 static bool PlatformSupported(); |
52 | 52 |
53 static void GetDeviceNames(Names* device_names); | 53 static void GetDeviceNames(Names* device_names); |
54 | 54 |
55 // Captured a new video frame. | 55 // Captured a new video frame. |
56 void OnIncomingCapturedFrame( | 56 void OnIncomingCapturedFrame(const uint8* data, |
57 const uint8* data, | 57 int length, |
58 int length, | 58 const base::TimeTicks& time_stamp, |
59 const base::Time& time_stamp, | 59 int rotation); |
60 int rotation); | |
61 | 60 |
62 private: | 61 private: |
63 void OnError(HRESULT hr); | 62 void OnError(HRESULT hr); |
64 | 63 |
65 Name name_; | 64 Name name_; |
66 base::win::ScopedComPtr<IMFActivate> device_; | 65 base::win::ScopedComPtr<IMFActivate> device_; |
67 scoped_refptr<MFReaderCallback> callback_; | 66 scoped_refptr<MFReaderCallback> callback_; |
68 | 67 |
69 base::Lock lock_; // Used to guard the below variables. | 68 base::Lock lock_; // Used to guard the below variables. |
70 scoped_ptr<VideoCaptureDevice::Client> client_; | 69 scoped_ptr<VideoCaptureDevice::Client> client_; |
71 base::win::ScopedComPtr<IMFSourceReader> reader_; | 70 base::win::ScopedComPtr<IMFSourceReader> reader_; |
72 VideoCaptureFormat capture_format_; | 71 VideoCaptureFormat capture_format_; |
73 bool capture_; | 72 bool capture_; |
74 | 73 |
75 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceMFWin); | 74 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceMFWin); |
76 }; | 75 }; |
77 | 76 |
78 } // namespace media | 77 } // namespace media |
79 | 78 |
80 #endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ | 79 #endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ |
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