[mythtv-commits] Ticket #10081: ALSA: Distorted 24bit playback

[MythTV]

#10081: ALSA: Distorted 24bit playback
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 Reporter:  mac20xx@…              |          Owner:  jyavenard
     Type:  Bug Report - General   |         Status:  infoneeded_new
 Priority:  minor                  |      Milestone:  unknown
Component:  MythTV - Audio Output  |        Version:  0.24.1
 Severity:  medium                 |     Resolution:
 Keywords:                         |  Ticket locked:  0
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Comment (by mac20xx@…):

 To me its not a problem of byte conversation but a problem of bit
 location.
 When using SND_PCM_FORMAT_S24 alsa fetches data from bits 0-24,
 when using SND_PCM_FORMAT_S32 from bits 8-31.

 For testing create a 24bit wave file: sox input.flac -3 24bit.wav
 This should play fine with aplay
 Turn volume to zero, start playback in mythmusic and then slowly increase
 volume.

 On my system I only hear very loud white noise without the changes I
 suggested.

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Ticket URL: <http://code.mythtv.org/trac/ticket/10081#comment:3>
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