[mythtv-commits] Ticket #850: Inaccuracies in audio timecode calculations

[MythTV]

#850: Inaccuracies in audio timecode calculations
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 Reporter:  mythtv at dadeos.freeserve.co.uk  |       Owner:  ijr
     Type:  defect                         |      Status:  new
 Priority:  minor                          |   Milestone:     
Component:  mythtv                         |     Version:     
 Severity:  medium                         |  
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 The existing audio code accumulates the timecode (in milliseconds) , this
 approach is insufficiently accurate as the rounding errors also accumulate
 over time. This most obviously manifests itself as the elapsed time in
 MythMusic for a 44.1kHz track doesn't match the overall track length at
 the end of the track playback. But would almost certainly cause all sorts
 of havoc for video streams with audio sample rates that don't divide
 nicely into an integer number of milliseconds for the block sizes used.

 The attached patch stores the position in bytes (as opposed to
 milliseconds) thus eliminating the rounding errors.

 <This is my first patch, so I hope that it's the correct format etc. ;-)>

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Ticket URL: <http://cvs.mythtv.org/trac/ticket/850>
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