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 3 // found in the LICENSE file. 4 5 // Implement a DirectShow sink filter used for receiving captured frames from 6 // a DirectShow Capture filter. 7 8 #ifndef MEDIA_VIDEO_CAPTURE_WIN_SINK_FILTER_WIN_H_ 9 #define MEDIA_VIDEO_CAPTURE_WIN_SINK_FILTER_WIN_H_ 10 11 #include <windows.h> 12 13 #include "base/memory/ref_counted.h" 14 #include "media/video/capture/video_capture_device.h" 15 #include "media/video/capture/video_capture_types.h" 16 #include "media/video/capture/win/filter_base_win.h" 17 #include "media/video/capture/win/sink_filter_observer_win.h" 18 19 // Define GUID for I420. This is the color format we would like to support but 20 // it is not defined in the DirectShow SDK. 21 // http://msdn.microsoft.com/en-us/library/dd757532.aspx 22 // 30323449-0000-0010-8000-00AA00389B71. 23 extern GUID kMediaSubTypeI420; 24 25 namespace media { 26 27 class SinkInputPin; 28 29 class __declspec(uuid("88cdbbdc-a73b-4afa-acbf-15d5e2ce12c3")) 30 SinkFilter : public FilterBase { 31 public: 32 explicit SinkFilter(SinkFilterObserver* observer); 33 virtual ~SinkFilter(); 34 35 void SetRequestedMediaFormat(const VideoCaptureFormat& format); 36 // Returns the format that is negotiated when this 37 // filter is connected to a media filter. 38 const VideoCaptureFormat& ResultingFormat(); 39 40 // Implement FilterBase. 41 virtual size_t NoOfPins(); 42 virtual IPin* GetPin(int index); 43 44 STDMETHOD(GetClassID)(CLSID* clsid); 45 46 private: 47 scoped_refptr<SinkInputPin> input_pin_; 48 49 DISALLOW_IMPLICIT_CONSTRUCTORS(SinkFilter); 50 }; 51 52 } // namespace media 53 54 #endif // MEDIA_VIDEO_CAPTURE_WIN_SINK_FILTER_WIN_H_ 55
