[mythtv-commits] Ticket #9930: Distorted alsa-output on some soundcards

[MythTV]

#9930: Distorted alsa-output on some soundcards
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 Reporter:  mac20xx@…              |          Owner:  jyavenard
     Type:  Patch - Bug Fix        |         Status:  new
 Priority:  minor                  |      Milestone:  0.24.1
Component:  MythTV - Audio Output  |        Version:  0.24.1
 Severity:  medium                 |     Resolution:
 Keywords:  distorted alsa output  |  Ticket locked:  0
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Comment (by jyavenard):

 While I do not doubt that their is a problem...

 I am not sure your interpretation of it is correct.

 period_size and buffer_size are values returned by ALSA, it is not set to
 a random value pulled out of thin air.

 The write_size is always fragment_size which is period_size *
 output_bytes_per_frame * 2 so by definition it is always a multiple of
 period_size.

 So if period_size isn't a multiple of "alsa-frames" (as you call it) ; the
 issue is within ALSA, not myth...

 Something that wouldn't surprise me as the type of audio corruption you
 describe never occurred with ALSA <= 1.0.22 and only occurs with recent
 version of alsa

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Ticket URL: <http://code.mythtv.org/trac/ticket/9930#comment:1>
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