[mythtv-commits] Ticket #191: Some recorded streams cause std::bad_alloc in mythfrontend

[MythTV]

#191: Some recorded streams cause std::bad_alloc in mythfrontend
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       Id:  191     |      Status:  new                               
Component:  mythtv  |    Modified:  Tue Aug  2 05:54:03 2005          
 Severity:  medium  |   Milestone:                                    
 Priority:  minor   |     Version:  0.18.1                            
    Owner:  ijr     |    Reporter:  Mike Cannon <m_cannon at pacbell.net>
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 == Problem ==

 Some recorded streams* cause std::bad_alloc in mythfrontend.


 == System ==

 Fedora Core 4 using mythtv-0.18.1-113.rhfc4.at.i386.rpm
 Also when built from mythtv-0.18.1-113.rhfc4.at.src.rpm
 and it has been reported on FC3.

 == Analysis ==

 What's characteristic about this is the stream has (at the
 beginning) frames with 0 height/width and you get
 OSDSet::m_wmult and OSDSet::m_hmult set to 0.0.

 Next time in  OSDSet::Reinit()...
 {{{
     float wchange = wmult / m_wmult;       // inf
     float hchange = hmult / m_hmult;       // inf
 }}}

 and soon, eg,  OSDTypeEditSlider::Reinit() tries
 (osdtypes.cpp:1228) to do
 {{{
     ...  new unsigned char[m_drawwidth + 1];
               // m_drawwidth == -2147483648
 }}}



 == (*) ==

 Perhaps 20% of recordings from a Motorola STB
 DCT-62xx  via firewire seem to cause this.

-- 
Ticket URL: <http://cvs.mythtv.org/trac/ticket/191>
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