[PlanetCCRMA] Alsa and frames size

Mon Dec 22 07:23:02 2003

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Probably because your card doesn't support it.

For instance, the RME cards will support buffer sizes as low as 64, but they
won't support anything other than 2 periods. All these cards are different
and, unfortunately, no one has really thought to update the Alsa site to
have a nice table of what parameters each card can accept. That would be
pretty cool, really...

- Mark
  -----Original Message-----
  From: planetccrma-admin@ccrma.Stanford.EDU
[mailto:planetccrma-admin@ccrma.Stanford.EDU]On Behalf Of Sonar
  Sent: Monday, December 22, 2003 6:56 AM
  To: planetccrma@ccrma.Stanford.EDU
  Subject: [PlanetCCRMA] Alsa and frames size

  Hi all,

  Why can't I start jack with less than 512 frames per period?

----------------------------------------------------------------------------
--
  loading driver ..
  creating alsa driver ... hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|rt|32bit
  control device hw:0
  configuring for 48000Hz, period = 256 frames, buffer = 2 periods
  Couldn't open hw:0 for 32bit samples trying 16bit instead
  ALSA: cannot set period size to 256 frames for capture
  ALSA: cannot configure capture channel
  cannot load driver module alsa

----------------------------------------------------------------------------
--
  Can't find anything on that in the archives and you guy's all seems to be
able to set the frames as low as 64!

  Starting Jack with qjackctl. Soundblaster live! with the latest planet
kernel on RH9.

  Thanx!
  _______________________________________________ PlanetCCRMA mailing list
PlanetCCRMA@ccrma.stanford.edu
http://ccrma-mail.stanford.edu/mailman/listinfo/planetccrma

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<DIV><SPAN class=3D966221815-22122003><FONT face=3DArial color=3D#0000ff =

size=3D2>Probably because your card doesn't support =
it.</FONT></SPAN></DIV>
<DIV><SPAN class=3D966221815-22122003><FONT face=3DArial color=3D#0000ff =

size=3D2>&nbsp;</DIV>
<DIV>For=20
instance, the RME cards will support buffer sizes as low as 64, but they =
won't=20
support anything other than 2 periods. All these cards are different =
and,=20
unfortunately, no one has really thought to update the Alsa site to have =
a nice=20
table of what parameters each card can accept. That would be pretty =
cool,=20
really...</DIV>
<DIV><FONT face=3DArial color=3D#0000ff =

size=3D2>&nbsp;</DIV>
<DIV>-=20
Mark</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid">
 <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft>-----Original Message----- From:=20
 planetccrma-admin@ccrma.Stanford.EDU=20
 [mailto:planetccrma-admin@ccrma.Stanford.EDU]On Behalf Of=20
 Sonar Sent: Monday, December 22, 2003 6:56 =
AM To:=20
 planetccrma@ccrma.Stanford.EDU Subject: [PlanetCCRMA] Alsa =
and=20
 frames size </DIV>Hi all, Why can't I start jack =
with=20
 less than 512 frames per period? 
 <HR width=3D"100%" SIZE=3D2>
 loading driver .. creating alsa driver ...=20
 hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|rt|32bit control device=20
 hw:0 configuring for 48000Hz, period =3D 256 frames, buffer =3D 2=20
 periods Couldn't open hw:0 for 32bit samples trying 16bit =
instead ALSA:=20
 cannot set period size to 256 frames for capture ALSA: cannot =
configure=20
 capture channel cannot load driver module alsa 
 <HR width=3D"100%" SIZE=3D2>
 Can't find anything on that in the archives and you guy's all seems to =
be able=20
 to set the frames as low as 64! Starting Jack with qjackctl.=20
 Soundblaster live! with the latest planet kernel on=20
 RH9. Thanx! _______________________________________________=20
 PlanetCCRMA mailing list PlanetCCRMA@ccrma.stanford.edu=20
 http://ccrma-mail.stanford.edu/mailman/listinfo/planetccrma=20
</BLOCKQUOTE></BODY></HTML>

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