directshow帮助文档学习笔记之directshow base classes - zhangxinbin的专栏 - csdnblog.htm

directshow的开发过程的详细介绍

href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A> and 
pin objects:<O:P></O:P></SPAN></P>
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><STRONG><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Class</SPAN></STRONG><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><STRONG><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Description</SPAN></STRONG><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><O:P></O:P></SPAN></P></TD></TR>
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    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/cbasefilterclass.htm"><STRONG>CBaseFilter</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for filters. Implements the <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ibasefilterinterface.htm"><STRONG>IBaseFilter</STRONG></A> 
      interface.<O:P></O:P></SPAN></P></TD></TR>
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    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/cbasepinclass.htm"><STRONG>CBasePin</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for pins. Implements the <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ipininterface.htm"><STRONG>IPin</STRONG></A> 
      and <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/iqualitycontrolinterface.htm"><STRONG>IQualityControl</STRONG></A> 
      interfaces.<O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 3">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/cbaseinputpinclass.htm"><STRONG>CBaseInputPin</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for input pins that use local memory transport. Implements the <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/imeminputpininterface.htm"><STRONG>IMemInputPin</STRONG></A> 
      interface. This class derives from <SPAN 
      class=SpellE><STRONG>CBasePin</STRONG></SPAN>.<O:P></O:P></SPAN></P></TD></TR>
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    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/cbaseoutputpinclass.htm"><STRONG>CBaseOutputPin</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for output pins that use <SPAN 
      class=SpellE><STRONG>IMemInputPin</STRONG></SPAN> connections. This class 
      derives from <SPAN 
      class=SpellE><STRONG>CBasePin</STRONG></SPAN>.<O:P></O:P></SPAN></P></TD></TR></TBODY></TABLE>
<P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
align=left><SPAN lang=EN-US 
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><O:P></O:P></SPAN></P>
<P class=MsoNormal 
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align=left><SPAN lang=EN-US 
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">The 
following classes are useful for creating more specialized types of 
filters:<O:P></O:P></SPAN></P>
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  <TR style="mso-yfti-irow: 0">
    <TD 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><STRONG><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Class</SPAN></STRONG><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><STRONG><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Description</SPAN></STRONG><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 1">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/csourceclass.htm"><STRONG>CSource</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for source filters. This class is designed for creating push 
      sources. It is not suitable for pull sources, such as file readers. To 
      create output pins for this class, use the <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/csourcestreamclass.htm"><STRONG>CSourceStream</STRONG></A> 
      class. <O:P></O:P></SPAN></P></TD></TR>
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    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ctransformfilterclass.htm"><STRONG>CTransformFilter</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
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      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for transform filters. This class performs a copy on the data. The 
      pins for this class are <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ctransforminputpinclass.htm"><STRONG>CTransformInputPin</STRONG></A> 
      and <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ctransformoutputpinclass.htm"><STRONG>CTransformOutputPin</STRONG></A>.<O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 3">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ctransinplacefilterclass.htm"><STRONG>CTransInPlaceFilter</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for transform filters that do not copy data. This class performs the 
      data processing directly on the input data before passing it downstream. 
      The pins for this class are <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ctransinplaceinputpinclass.htm"><STRONG>CTransInPlaceInputPin</STRONG></A> 
      and <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ctransinplaceoutputpinclass.htm"><STRONG>CTransInPlaceOutputPin</STRONG></A>.<O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 4">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/cvideotransformfilterclass.htm"><STRONG>CVideoTransformFilter</STRONG></A><O:P></O:P></SPAN></P></TD>
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Base 
      class for video transform filters. This class derives from <SPAN 
      class=SpellE><STRONG>CTransformFilter</STRONG></SPAN> and adds support for 
      quality control.<O:P></O:P></SPAN></P></TD></TR>