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

directshow的开发过程的详细介绍

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  class=SpellE><STRONG><SPAN lang=EN-US 
  style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">IServiceProvider</SPAN></STRONG></SPAN><SPAN 
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  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/ivideoframestepinterface.htm"><STRONG>IVideoFrameStep</STRONG></A> 
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  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/ivideowindowinterface.htm"><STRONG>IVideoWindow</STRONG></A> 
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<P class=MsoNormal><SPAN lang=EN-US><O:P></O:P></SPAN></P>
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style="FONT-SIZE: 16pt; COLOR: fuchsia; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 18.0pt"><A 
title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A> 
<SPAN class=SpellE>Mapper</SPAN><O:P></O:P></SPAN></STRONG></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 
<A title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A> 
<SPAN class=SpellE>Mapper</SPAN> searches the registry for registered filters. 
The <A title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A> <A 
title=Graph 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Graph">Graph</A> 
Manager uses this component to build <A title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A> 
graphs. Applications can use it to find filters that match specified search 
criteria. Create this object by calling <SPAN 
class=SpellE><STRONG>CoCreateInstance</STRONG></SPAN>.<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 
      Identifier</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 
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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">CLSID_FilterMapper2<O:P></O:P></SPAN></P></TD></TR>
  <TR style="mso-yfti-irow: 1; mso-yfti-lastrow: yes">
    <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">Interfaces</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><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/iamfilterdatainterface.htm"><STRONG>IAMFilterData</STRONG></A> 
      (deprecated), <A 
      href="mk:@MSITStore:C:\DXSDK\Doc\DirectX9\DirectX9_c.chm::/directx/htm/ifiltermapper2interface.htm"><STRONG>IFilterMapper2</STRONG></A><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 
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=mediapropertybag></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">Media 
Property Bag<O:P></O:P></SPAN></STRONG></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 
Media Property Bag object sets or retrieves INFO and DISP chunks in AVI files. 
Create this object by calling <SPAN 
class=SpellE><STRONG>CoCreateInstance</STRONG></SPAN>.<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 
      Identifier</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 
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    vAlign=top>
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN class=SpellE><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">CLSID_MediaPropertyBag</SPAN></SPAN><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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    <TD 
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    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">Interfaces</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><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/imediapropertybaginterface.htm"><STRONG>IMediaPropertyBag</STRONG></A><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 
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=memoryallocator></A><STRONG><SPAN lang=EN-US 
style="FONT-SIZE: 16pt; COLOR: fuchsia; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 18.0pt">Memory 
<SPAN class=SpellE>Allocator</SPAN><O:P></O:P></SPAN></STRONG></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 
Memory <SPAN class=SpellE>Allocator</SPAN> object <SPAN 
style="COLOR: fuchsia">allocates buffers for media samples</SPAN>. Filters can 
use this object to allocate shared memory buffers; however, a <A title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter">Filter</A> 
with special requirements can also implement its own memory <SPAN 
class=SpellE>allocator</SPAN> object. Create this object by calling <SPAN 
class=SpellE><STRONG>CoCreateInstance</STRONG></SPAN>.<O:P></O:P></SPAN></P>
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    vAlign=top width="49%">
      <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 
      Identifier</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; WIDTH: 51%; PADDING-TOP: 3.75pt" 
    vAlign=top width="51%">
      <P class=MsoNormal style="TEXT-ALIGN: left; mso-pagination: widow-orphan" 
      align=left><SPAN class=SpellE><SPAN lang=EN-US 
      style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt">CLSID_MemoryAllocator</SPAN></SPAN><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; mso-yfti-lastrow: yes">
    <TD 
    style="PADDING-RIGHT: 3.75pt; PADDING-LEFT: 3.75pt; PADDING-BOTTOM: 3.75pt; WIDTH: 49%; PADDING-TOP: 3.75pt" 
    vAlign=top width="49%">
      <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">Interfaces</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; WIDTH: 51%; PADDING-TOP: 3.75pt" 
    vAlign=top width="51%">
      <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/imemallocatorinterface.htm"><STRONG>IMemAllocator</STRONG></A><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 
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=systemreferenceclock></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">System 
Reference Clock<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">The 
System Reference Clock object implements a reference clock that returns the 
system time. If none of the filters in the <A title=Graph 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Graph">Graph</A> 
provides a reference clock, the <A title=Filter 
href="http://blog.csdn.net/zhangxinbin/archive/2006/10/22/Filter"