[ lame-Bugs-3526854 ] Crash when using IAMStreamConfig GetStreamCaps function

Bugs item #3526854, was opened at 2012-05-15 00:25
Message generated for change (Comment added) made by maxsmi
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Category: Libraries
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: https://www.google.com/accounts ()
Assigned to: Nobody/Anonymous (nobody)
Summary: Crash when using IAMStreamConfig GetStreamCaps function

Initial Comment:
lame.ax
When the IAMStreamConfig::GetStreamCaps() is called, the filter crashes because of the unitialized variable "m_mt" if the output pin is not connected. m_mt represents the connection mediatype of the output pin, however the pin can be not connected when GetStreamCaps() is called.

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Comment By: Maxsmi (maxsmi)
Date: 2012-05-15 21:20

Message:
There is no such restrictions in a documentation. Here is what the
documentation says:
"Filters implement the IAMStreamConfig::SetFormat method to set the audio
or video format before the filter's pins are connected. If your output pin
is already connected and you can provide a new type, then reconnect your
pin..."
The GetStreamCaps() is called before SetFormat(). That means there is no
need to have a connected pin.

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Comment By: Joseph Flynn (jwflynn1)
Date: 2012-05-15 16:24

Message:
I am not trying to justify the crash but your methodology is incorrect. The
compressor output pins need to be rendered *before* you set the compression
parameters or call GetStreamCaps().


Joe Flynn

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100290&aid=3526854&group_id=290

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