[mythtv-commits] Ticket #8378: Sound off by ~200ms (at least with pulse audio)

[MythTV]

#8378: Sound off by ~200ms (at least with pulse audio)
---------------------------------------------+------------------------------
 Reporter:  Marc Randolph <mrand@…>          |       Owner:  ijr    
     Type:  patch                            |      Status:  new    
 Priority:  minor                            |   Milestone:  unknown
Component:  MythTV - General                 |     Version:  0.23rc2
 Severity:  medium                           |     Mlocked:  0      
---------------------------------------------+------------------------------
 Forwarding upstream.  I user has verified that [24214] indeed fixed the
 major pulse audio seeking problem when applied against to the 0.23-fixes
 branch.  He did notice sound sync was off by a bit though, and found that
 the following patch fixes it:

 {{{
 Index: libs/libmyth/audiooutputpulse.cpp
 ===================================================================
 --- libs/libmyth/audiooutputpulse.cpp   (revision 24255)
 +++ libs/libmyth/audiooutputpulse.cpp   (working copy)
 @@ -564,7 +564,7 @@
      fragment_size = 20UL * sample_rate * audio_bits * audio_channels
          / 8 /* 8 bits per byte */ / 1000 /* 1000 ms per second */;

 -    soundcard_buffer_size = 16 * fragment_size;
 +    soundcard_buffer_size = 6 * fragment_size;
      buffer_settings.maxlength = soundcard_buffer_size;
      buffer_settings.tlength = fragment_size * 4;
      buffer_settings.prebuf = (uint32_t)-1;
 }}}

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Ticket URL: <http://svn.mythtv.org/trac/ticket/8378>
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