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Side by Side Diff: media/video/capture/win/pin_base_win.h

Issue 7229013: This is the VideoCaptureDevice implementation for windows. (Closed) Base URL: http://src.chromium.org/svn/trunk/src/
Patch Set: '' Created 9 years, 6 months ago
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1 // Copyright (c) 2011 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 simple base class for a DirectShow input pin. It may only be
6 // used in a single threaded apartment.
7
8 #ifndef MEDIA_VIDEO_CAPTURE_WIN_PIN_BASE_WIN_H_
9 #define MEDIA_VIDEO_CAPTURE_WIN_PIN_BASE_WIN_H_
10 #pragma once
11
12 // Avoid including strsafe.h via dshow as it will cause build warnings.
13 #define NO_DSHOW_STRSAFE
14 #include <dshow.h>
15
16 #include "base/memory/ref_counted.h"
17
18 namespace media {
19
20 class PinBase : public IPin,
scherkus (not reviewing) 2011/06/24 20:15:26 nit: style should be same as initializer list (dro
Per K 2011/06/27 11:47:50 Done.
21 public IMemInputPin,
22 public base::RefCounted<PinBase> {
23 public:
24 explicit PinBase(IBaseFilter* owner);
25 virtual ~PinBase();
26
27 // Checks if a media type is acceptable. This is called when this pin is
28 // connected to an output pin. Must return true if the media type is
29 // acceptable, false otherwise.
30 virtual bool IsMediaTypeValid(const AM_MEDIA_TYPE* media_type) = 0;
31
32 // Enumerates valid media types.
33 virtual bool GetValidMediaType(int index, AM_MEDIA_TYPE* media_type) = 0;
34
35 // Called when new media is received. Note that this is not on the same
36 // thread as where the pin is created.
37 virtual HRESULT STDMETHODCALLTYPE Receive(IMediaSample *pSample) = 0;
tommi (sloooow) - chröme 2011/06/27 13:20:37 fix all "virtual HRESULT STDMETHODCALLTYPE" to use
38
39 virtual HRESULT STDMETHODCALLTYPE Connect(IPin *pReceivePin,
40 const AM_MEDIA_TYPE *pmt);
41
42 virtual HRESULT STDMETHODCALLTYPE ReceiveConnection(
43 IPin *pConnector,
44 const AM_MEDIA_TYPE *pmt);
45
46 virtual HRESULT STDMETHODCALLTYPE Disconnect();
47
48 virtual HRESULT STDMETHODCALLTYPE ConnectedTo(IPin **pPin);
49
50 virtual HRESULT STDMETHODCALLTYPE ConnectionMediaType(AM_MEDIA_TYPE *pmt);
51
52 virtual HRESULT STDMETHODCALLTYPE QueryPinInfo(PIN_INFO *pInfo);
53
54 virtual HRESULT STDMETHODCALLTYPE QueryDirection(PIN_DIRECTION *pPinDir);
55
56 virtual HRESULT STDMETHODCALLTYPE QueryId(LPWSTR *Id);
57
58 virtual HRESULT STDMETHODCALLTYPE QueryAccept(const AM_MEDIA_TYPE *pmt);
59
60 virtual HRESULT STDMETHODCALLTYPE EnumMediaTypes(IEnumMediaTypes **ppEnum);
61
62 virtual HRESULT STDMETHODCALLTYPE QueryInternalConnections(IPin **apPin,
63 ULONG *nPin);
64
65 virtual HRESULT STDMETHODCALLTYPE EndOfStream();
66
67 virtual HRESULT STDMETHODCALLTYPE BeginFlush();
68
69 virtual HRESULT STDMETHODCALLTYPE EndFlush();
70
71 virtual HRESULT STDMETHODCALLTYPE NewSegment(REFERENCE_TIME tStart,
72 REFERENCE_TIME tStop,
73 double dRate);
74
75 // Inherited from IMemInputPin.
76 virtual HRESULT STDMETHODCALLTYPE GetAllocator(IMemAllocator **ppAllocator);
77
78 virtual HRESULT STDMETHODCALLTYPE NotifyAllocator(IMemAllocator *pAllocator,
79 BOOL bReadOnly);
80
81 virtual HRESULT STDMETHODCALLTYPE GetAllocatorRequirements(
82 ALLOCATOR_PROPERTIES *pProps);
83
84 virtual HRESULT STDMETHODCALLTYPE ReceiveMultiple(IMediaSample **pSamples,
85 long nSamples,
86 long *nSamplesProcessed);
87 virtual HRESULT STDMETHODCALLTYPE ReceiveCanBlock();
88
89 // Inherited from IUnknown.
90 virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID id,
91 void** object_ptr);
92
93 virtual ULONG STDMETHODCALLTYPE AddRef();
94
95 virtual ULONG STDMETHODCALLTYPE Release();
96
97 private:
98 AM_MEDIA_TYPE current_media_type_;
99 IPin* connected_pin_;
100 IBaseFilter* owner_;
101 };
102
103 } // namespace media
104
105 #endif // MEDIA_VIDEO_CAPTURE_WIN_PIN_BASE_WIN_H_
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