原英文网址：点击打开链接
有些函数做了翻译，因为太多，有些函数就没做翻译了。
1、IAMExtDevice 接口：这个接口继承 IUnKnown 接口，控制设备的基本函数，其中的一些方法如下：
2、IAMStreamConfig 接口，在确定的采集和压缩过滤器上设置一些输出格式，同时设置音频/视频。用户能使用这个接口设置一些属性，比如：视频的输出路数和帧率，音频的采样率和通道数。同样是继承 IUnKnown 接口，其中一些方法如下：
注意，过滤器需要在他们的输出 IPin 上获得 IAMStreamConfig 接口，所以在使用该接口之前要枚举过滤器的 PIn，或者你也可以使用 Capture Graph Builder 对象来建立filter graph，你可以调用ICaptureGraphBuilder2::FindInterface 方法.注意在采集的时候可能要区分采集Pin和预览Pin。
IAMStreamConfig::GetNumberOfCapabilities () 方法的函数原型如下：
HRESULT GetNumberOfCapabilities( int* piCount, int* piSize );
第一个参数用来保存所有可支持的音频/视频设备的数量，第二个参数用来保存配置AUDIO_STREAM_CONFIG_CAPS 或者 VIDEO_STREAM_CONFIG_CAPS，结构体的大小。
IAMStreamConfig::GetStreamCaps () 方法的函数原型如下：
HRESULT GetStreamCaps( int iIndex, AM_MEDIA_TYPE** pmt, BYTE* pSCC );
这个方法获取音频、视频或者其他数据流的所依靠的结构体类型，在 pSCC中被指出，第一个参数是与GetNumberOfCapabilities方法对应piCount 中的设备标号，第二个参数是指向媒体类型结构体的指针，第三个参数指向媒体流的配置结构体。
关于媒体流的配置结构体，原网页：点击打开链接
Members
- guid
-
GUID that identifies the format type. For example, FORMAT_VideoInfo or FORMAT_VideoInfo2. For more information, see the formattype member of the AM_MEDIA_TYPE structure. - VideoStandard
-
The analog video standard supported. The value is a bitwise combination of flags from theAnalogVideoStandard enumeration
type, or zero. - InputSize
-
Native size of the incoming video signal. For a compressor, the size is taken from the input pin. For a capture filter, the size is the largest signal the filter can digitize with every pixel remaining unique.Note Deprecated.
- MinCroppingSize
-
Smallest source rectangle allowed. The source rectangle is defined in the rcSource member of theVIDEOINFOHEADER or VIDEOINFOHEADER2 structure.Note Deprecated.
- MaxCroppingSize
-
Largest source rectangle allowed.Note Deprecated.
- CropGranularityX
-
Horizontal granularity of the source rectangle. This value specifies the increments that are valid betweenMinCroppingSize and MaxCroppingSize.Note Deprecated.
- CropGranularityY
-
Vertical granularity of the source rectangle. This value specifies the increments that are valid betweenMinCroppingSize and MaxCroppingSize.Note Deprecated.
- CropAlignX
-
Required horizontal alignment of the source rectangle.Note Deprecated.
- CropAlignY
-
Required vertical alignment of the source rectangle.Note Deprecated.
- MinOutputSize
-
Minimum output size.Note Deprecated.
- MaxOutputSize
-
Maximum output size.Note Deprecated.
- OutputGranularityX
-
Granularity of the output width. This value specifies the increments that are valid betweenMinOutputSize and MaxOutputSize.Note Deprecated.
- OutputGranularityY
-
Granularity of output height. This value specifies the increments that are valid between MinOutputSizeand MaxOutputSize.Note Deprecated.
- StretchTapsX
-
Indicates how well the filter can stretch the image horizontally.Note Deprecated.
- StretchTapsY
-
Indicates how well the filter can stretch the image vertically.Note Deprecated.
- ShrinkTapsX
-
Indicates how well the filter can shrink the image horizontally.Note Deprecated.
- ShrinkTapsY
-
Indicates how well the filter can shrink the image vertically.Note Deprecated.
The previous four structure members use the following values:
Value Meaning - 0
Does not support stretching/shrinking.- 1
Uses pixel doubling (stretching) or eliminates pixels (shrinking)- 2
Uses interpolation (2 taps)- 3 and higher
Uses interpolation (>2 taps) - MinFrameInterval
-
The minimum frame duration, in 100-nanosecond units. This value applies only to capture filters. - MaxFrameInterval
-
The maximum frame duration, in 100-nanosecond units. This value applies only to capture filters. - MinBitsPerSecond
-
Minimum data rate this pin can produce.Note Deprecated.
- MaxBitsPerSecond
-
Maximum data rate this pin can produce.
3、IAMVideoControl 接口，这个接口让你可以水平或者垂直的反转一幅图片，可以设置一个外部触法按钮来采集图像，软件的方式模拟外部触法，以及列出可用帧率。同样是继承IUnKnown 接口，其中的方法如下：
未完。
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