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2 //
3 // The MIT License (MIT)
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5 // Permission is hereby granted, free of charge, to any person obtaining a copy
6 // of this software and associated documentation files(the "Software"), to deal
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12 // The above copyright notice and this permission notice shall be included in
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16 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21 // THE SOFTWARE.
22 
23 #pragma once
24 
25 #include "MFIncludes.hpp"
26 
27 
28 namespace Media {
29 
30 class MediaSink;
31 
32 enum class CaptureStreamType
33 {
34     Preview = 0,
35     Record
36 };
37 
38 ref class CaptureFrameGrabber sealed
39 {
40 public:
41 
42     // IClosable
43     virtual ~CaptureFrameGrabber();
44 
45     virtual void ShowCameraSettings();
46 
47 internal:
48 
49     static concurrency::task<CaptureFrameGrabber^> CreateAsync(_In_ WMC::MediaCapture^ capture, _In_ WMMp::VideoEncodingProperties^ props)
50     {
51         return CreateAsync(capture, props, CaptureStreamType::Preview);
52     }
53 
54     static concurrency::task<CaptureFrameGrabber^> CreateAsync(_In_ WMC::MediaCapture^ capture, _In_ WMMp::VideoEncodingProperties^ props, CaptureStreamType streamType);
55 
56     concurrency::task<MW::ComPtr<IMF2DBuffer2>> GetFrameAsync();
57     concurrency::task<void> FinishAsync();
58 
59 private:
60 
61     CaptureFrameGrabber(_In_ WMC::MediaCapture^ capture, _In_ WMMp::VideoEncodingProperties^ props, CaptureStreamType streamType);
62 
63     void ProcessSample(_In_ MediaSample^ sample);
64 
65     Platform::Agile<WMC::MediaCapture> _capture;
66     ::Windows::Media::IMediaExtension^ _mediaExtension;
67 
68     MW::ComPtr<MediaSink> _mediaSink;
69 
70     CaptureStreamType _streamType;
71 
72     enum class State
73     {
74         Created,
75         Started,
76         Closing,
77         Closed
78     } _state;
79 
80     std::queue<concurrency::task_completion_event<MW::ComPtr<IMF2DBuffer2>>> _videoSampleRequestQueue;
81     AutoMF _mf;
82     MWW::SRWLock _lock;
83 };
84 
85 }