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

      interface. <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/cbasereferenceclockclass.htm"><STRONG>CBaseReferenceClock</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 reference clocks. Implements the <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ireferenceclockinterface.htm"><STRONG>IReferenceClock</STRONG></A> 
      interface. <O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 9; mso-yfti-lastrow: yes">
    <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/cmediatypeclass.htm"><STRONG>CMediaType</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 class=GramE><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">Helper 
      object</SPAN></SPAN><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"> 
      for manipulating <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/am_media_typestructure.htm"><STRONG>AM_MEDIA_TYPE</STRONG></A> 
      structures.<O:P></O:P></SPAN></P></TD></TR></TBODY></TABLE>
<P class=MsoNormal><SPAN lang=EN-US><O:P></O:P></SPAN></P>
<P class=MsoNormal><A name=baseclassreference></A><SPAN lang=EN-US><SPAN 
style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
</SPAN></SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上的提到的类并非所有的</SPAN><SPAN 
lang=EN-US style="COLOR: fuchsia"> the Microsoft <A title=DirectShow 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/DirectShow">DirectShow</A> 
C++ classes</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><O:P></O:P></SPAN></P>
<P class=MsoNormal 
style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 1" 
align=left><A name=utilityfunctions></A><STRONG><SPAN lang=EN-US 
style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 18.0pt">Utility 
Functions<O:P></O:P></SPAN></STRONG></P>
<P class=MsoNormal 
style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" 
align=left><SPAN lang=EN-US 
style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">This 
section contains reference entries for the Microsoft® <A title=DirectShow 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/DirectShow">DirectShow</A>® 
<SPAN style="COLOR: fuchsia">utility functions and macros</SPAN>. To use these 
functions, you must build the <A title=DirectShow 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/DirectShow">DirectShow</A> 
base-class library. <O:P></O:P></SPAN></P>
<UL type=disc>
  <LI class=MsoNormal 
  style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l7 level1 lfo6; tab-stops: list 36.0pt"><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/comhelperfunctions.htm">COM 
  Helper Functions</A> <O:P></O:P></SPAN>
  <LI class=MsoNormal 
  style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l7 level1 lfo6; tab-stops: list 36.0pt"><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/dllsetupfunctions.htm">DLL 
  Setup Functions</A> <O:P></O:P></SPAN>
  <LI class=MsoNormal 
  style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l7 level1 lfo6; tab-stops: list 36.0pt"><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/mediatypefunctions.htm">Media 
  Type Functions</A> <O:P></O:P></SPAN>
  <LI class=MsoNormal 
  style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l7 level1 lfo6; tab-stops: list 36.0pt"><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/miscellaneoushelperfunctions.htm">Miscellaneous 
  Helper Functions</A> <O:P></O:P></SPAN>
  <LI class=MsoNormal 
  style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l7 level1 lfo6; tab-stops: list 36.0pt"><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/propertypagehelperfunctions.htm">Property 
  Page Helper Functions</A> <O:P></O:P></SPAN>
  <LI class=MsoNormal 
  style="TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l7 level1 lfo6; tab-stops: list 36.0pt"><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/videoandimagefunctions.htm">Video 
  and Image Functions</A> <O:P></O:P></SPAN></LI></UL>
<H3><A name=comhelperfunctions></A><SPAN lang=EN-US 
style="FONT-SIZE: 14pt; LINE-HEIGHT: 172%"><A title="" 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/COM">COM</A> Helper 
Functions<O:P></O:P></SPAN></H3>
<P><SPAN lang=EN-US>These functions provide support for implementing the <SPAN 
class=SpellE><STRONG>IUnknown</STRONG></SPAN> interface.</SPAN></P>
<P class=blue><STRONG><SPAN lang=EN-US>Requirements</SPAN></STRONG></P>
<P class=indent><STRONG><SPAN lang=EN-US>Header:</SPAN></STRONG><SPAN 
lang=EN-US> Declared in <SPAN class=SpellE>Combase.h</SPAN>; include <SPAN 
class=SpellE>Streams.h</SPAN>.</SPAN></P>
<P class=indent><STRONG><SPAN lang=EN-US>Library:</SPAN></STRONG><SPAN 
lang=EN-US> Use <SPAN class=SpellE>Strmbase.lib</SPAN> (retail builds) or <SPAN 
class=SpellE>Strmbasd.lib</SPAN> (debug builds).<O:P></O:P></SPAN></P>
<TABLE class=MsoNormalTable 
style="mso-padding-alt: 3.75pt 3.75pt 3.75pt 3.75pt; mso-cellspacing: 1.5pt" 
cols=2 cellPadding=0 rules=rows border=0 frame=below>
  <TBODY>
  <TR style="mso-yfti-irow: 0">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal><STRONG><SPAN lang=EN-US>Function</SPAN></STRONG><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><STRONG><SPAN 
      lang=EN-US>Description</SPAN></STRONG><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><SPAN lang=EN-US><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/declare_iunknown.htm"><STRONG>DECLARE_IUNKNOWN</STRONG></A></SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><SPAN lang=EN-US>Declares the three methods of the base 
      interface for a new interface.</SPAN><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 2">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal><SPAN lang=EN-US><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/getinterface.htm"><STRONG>GetInterface</STRONG></A></SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><SPAN lang=EN-US>Retrieves an interface pointer to the 
      requested client.</SPAN><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><SPAN lang=EN-US><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/inondelegatingunknownbaseclassesutilfuncts.htm"><STRONG>INonDelegatingUnknown</STRONG></A></SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><SPAN class=SpellE><SPAN 
      lang=EN-US>Nondelegating</SPAN></SPAN><SPAN lang=EN-US> version of the 
      <SPAN class=SpellE><STRONG>IUnknown</STRONG></SPAN> interface.</SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 4; mso-yfti-lastrow: yes">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; PADDING-TOP: 3.75pt" 
    vAlign=top>
      <P class=MsoNormal><SPAN lang=EN-US><A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/loadoleaut32.htm"><STRONG>LoadOLEAut32</STRONG></A></SPAN><SPAN 
      lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><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><SPAN lang=EN-US>Loads the Automation DLL 
      (OleAut32.dll).</SPAN><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体"><O:P></O:P></SPAN></P></TD></TR></TBODY></TABLE>
<H3><A name=dllsetupfunctions></A><SPAN lang=EN-US 
style="FONT-SIZE: 14pt; LINE-HEIGHT: 172%">DLL Setup 
Functions<O:P></O:P></SPAN></H3>
<P><SPAN lang=EN-US>These functions register a <A title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A>.</SPAN></P>
<P class=blue><STRONG><SPAN lang=EN-US>Requirements</SPAN></STRONG></P>
<P class=indent><STRONG><SPAN lang=EN-US>Header:</SPAN></STRONG><SPAN 
lang=EN-US> Declared in <SPAN