how do you connect filter pins

Question

I am somewhat new to DirectShow programming.

I can not connect two filter pins with this code:

hr = pGraph->Connect(pMuxOut,pDecoderForDellIn)

The error returned is hr = -2147220969. This translates to error code 535 and facility code 4 in winerror.h ..
winerror.h documentation shows this error as :

// MessageId: ERROR_PIPE_LISTENING
//
// MessageText:
//
// Waiting for a process to open the other end of the pipe.


 What does it mean? How does it apply to my program? Am I misreading the error code?

The strange thing is that the filter pins will connect properly when I manually connect them in graphedit.
Why wont they connect in my visual studio program?
Any help will be appreciated.
Thanks.
Will

Answer 1

The error returned is hr = -2147220969. This translates to...

Search results for HRESULT = 0x80040217 :
=========================
Module File Name:
C:\Windows\SysWOW64\quartz.dll
Error Message:
No combination of intermediate filters could be found to make the connection.
-------------------------

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http://alax.info/blog/tag/directshow

Answer 2

Roman: Thanks for the quick reply.

Why can GRAPHEDT connect the same two filters without any intermediate filters but I can't?

Answer 3

There is no easy answer. Typically you can do the same things in code and with GraphEdit, but there are exception and scenarios specific to certain filters. For example, a commercial filter might be letting connections in GraphEdit as a "demo mode". But inmost cases it's something with your code if you have problems repeating GraphEdit behavior.

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http://alax.info/blog/tag/directshow

Answer 4

Thanks for the help.
Will