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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_ |
11 #pragma once | 11 #pragma once |
12 | 12 |
13 // Avoid including strsafe.h via dshow as it will cause build warnings. | 13 // Avoid including strsafe.h via dshow as it will cause build warnings. |
14 #define NO_DSHOW_STRSAFE | 14 #define NO_DSHOW_STRSAFE |
15 #include <dshow.h> | 15 #include <dshow.h> |
16 | 16 |
17 #include <map> | 17 #include <map> |
18 #include <string> | 18 #include <string> |
19 | 19 |
20 #include "base/threading/thread.h" | 20 #include "base/threading/thread.h" |
21 #include "base/win/scoped_com_initializer.h" | |
22 #include "base/win/scoped_comptr.h" | 21 #include "base/win/scoped_comptr.h" |
23 #include "media/video/capture/video_capture_device.h" | 22 #include "media/video/capture/video_capture_device.h" |
24 #include "media/video/capture/video_capture_types.h" | 23 #include "media/video/capture/video_capture_types.h" |
25 #include "media/video/capture/win/sink_filter_win.h" | 24 #include "media/video/capture/win/sink_filter_win.h" |
26 #include "media/video/capture/win/sink_input_pin_win.h" | 25 #include "media/video/capture/win/sink_input_pin_win.h" |
27 | 26 |
28 namespace media { | 27 namespace media { |
29 | 28 |
29 // All the APIs in the class can only be run on a COM thread. | |
mflodman_chromium_OOO
2012/06/29 14:46:04
'a COM thread.' -> 'a COM initialized thread.' ?
no longer working on chromium
2012/07/02 08:40:49
Done.
| |
30 class VideoCaptureDeviceWin | 30 class VideoCaptureDeviceWin |
31 : public VideoCaptureDevice, | 31 : public VideoCaptureDevice, |
32 public SinkFilterObserver { | 32 public SinkFilterObserver { |
33 public: | 33 public: |
34 explicit VideoCaptureDeviceWin(const Name& device_name); | 34 explicit VideoCaptureDeviceWin(const Name& device_name); |
35 virtual ~VideoCaptureDeviceWin(); | 35 virtual ~VideoCaptureDeviceWin(); |
36 // Opens the device driver for this device. | 36 // Opens the device driver for this device. |
37 // This function is used by the static VideoCaptureDevice::Create function. | 37 // This function is used by the static VideoCaptureDevice::Create function. |
38 bool Init(); | 38 bool Init(); |
39 | 39 |
(...skipping 17 matching lines...) Expand all Loading... | |
57 }; | 57 }; |
58 typedef std::map<int, VideoCaptureCapability> CapabilityMap; | 58 typedef std::map<int, VideoCaptureCapability> CapabilityMap; |
59 | 59 |
60 // Implements SinkFilterObserver. | 60 // Implements SinkFilterObserver. |
61 virtual void FrameReceived(const uint8* buffer, int length); | 61 virtual void FrameReceived(const uint8* buffer, int length); |
62 | 62 |
63 bool CreateCapabilityMap(); | 63 bool CreateCapabilityMap(); |
64 int GetBestMatchedCapability(int width, int height, int frame_rate); | 64 int GetBestMatchedCapability(int width, int height, int frame_rate); |
65 void SetErrorState(const char* reason); | 65 void SetErrorState(const char* reason); |
66 | 66 |
67 base::win::ScopedCOMInitializer initialize_com_; | |
68 | |
69 Name device_name_; | 67 Name device_name_; |
70 InternalState state_; | 68 InternalState state_; |
71 VideoCaptureDevice::EventHandler* observer_; | 69 VideoCaptureDevice::EventHandler* observer_; |
72 | 70 |
73 base::win::ScopedComPtr<IBaseFilter> capture_filter_; | 71 base::win::ScopedComPtr<IBaseFilter> capture_filter_; |
74 base::win::ScopedComPtr<IGraphBuilder> graph_builder_; | 72 base::win::ScopedComPtr<IGraphBuilder> graph_builder_; |
75 base::win::ScopedComPtr<IMediaControl> media_control_; | 73 base::win::ScopedComPtr<IMediaControl> media_control_; |
76 base::win::ScopedComPtr<IPin> input_sink_pin_; | 74 base::win::ScopedComPtr<IPin> input_sink_pin_; |
77 base::win::ScopedComPtr<IPin> output_capture_pin_; | 75 base::win::ScopedComPtr<IPin> output_capture_pin_; |
78 // Used when using a MJPEG decoder. | 76 // Used when using a MJPEG decoder. |
79 base::win::ScopedComPtr<IBaseFilter> mjpg_filter_; | 77 base::win::ScopedComPtr<IBaseFilter> mjpg_filter_; |
80 base::win::ScopedComPtr<IPin> input_mjpg_pin_; | 78 base::win::ScopedComPtr<IPin> input_mjpg_pin_; |
81 base::win::ScopedComPtr<IPin> output_mjpg_pin_; | 79 base::win::ScopedComPtr<IPin> output_mjpg_pin_; |
82 | 80 |
83 scoped_refptr<SinkFilter> sink_filter_; | 81 scoped_refptr<SinkFilter> sink_filter_; |
84 | 82 |
85 // Map of all capabilities this device support. | 83 // Map of all capabilities this device support. |
86 CapabilityMap capabilities_; | 84 CapabilityMap capabilities_; |
87 | 85 |
88 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceWin); | 86 DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceWin); |
89 }; | 87 }; |
90 | 88 |
91 } // namespace media | 89 } // namespace media |
92 | 90 |
93 #endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ | 91 #endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_ |
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