[ALSA - driver 0000758]: Full duplex is not working in OSS emulation.

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=758> 
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Reported By:                croiset
Assigned To:                
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Project:                    ALSA - driver
Issue ID:                   758
Category:                   PCI - RME 96
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Distribution:               Redhat 7.2
Kernel Version:             2.4.7
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Date Submitted:             12-29-2004 10:15 CET
Last Modified:              05-09-2006 15:49 CEST
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Summary:                    Full duplex is not working in OSS emulation.
Description: 
If I play something with one player, I am unable to record something on the
same device.
The same thing ispossible with the other cards I have.
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Relationships       ID      Summary
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related to          0000521 Jack + Alsa not working in full duplex,...
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 croiset - 05-09-06 14:09 
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I do the same test with alsa driver 1.0.11.

I am able to record if I am not playing at the same time. If I am playing
I obtain the open error at the same place as before.

----------------------------------------------------------------------
 croiset - 05-09-06 15:49 
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We put some logs in rme96.c for debugging the problem.

We obtain this :

The function snd_rme96_capture_hw_params returns -EBUSY when we open the
analog capture device when the analog output device is already opened in
play mode because :

rme96->playback_periodsize = 2048
rme96->capture_frlog = 2
params_period_size(params)=2048

then the tsst in line 1052 (alsa 1.0.11) is valid and then returns -EBUSY

If the analog output device is not opened, when we capture, the values are
:
rme96->playback_periodsize = 0
rme96->capture_frlog = 2
params_period_size(params)=2048

then the test is not valid and the device is working.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
12-29-04 10:15 croiset        New Issue                                    
12-29-04 10:15 croiset        Distribution              => Redhat 7.2      
12-29-04 10:15 croiset        Kernel Version            => 2.4.7           
12-29-04 14:17 tiwai          Note Added: 0002998                          
12-29-04 14:54 croiset        Note Added: 0003000                          
12-29-04 17:39 tiwai          Note Added: 0003004                          
12-29-04 17:56 croiset        Note Added: 0003005                          
12-29-04 17:59 croiset        Note Added: 0003006                          
12-29-04 18:05 croiset        Note Edited: 0003006                         
12-29-04 18:18 croiset        Note Edited: 0003006                         
01-03-05 16:30 croiset        Note Added: 0003067                          
09-14-05 16:16 jdthood        Relationship added       related to 0000521  
12-30-05 23:08 rlrevell       Note Added: 0007278                          
01-02-06 09:12 croiset        Note Added: 0007368                          
05-09-06 14:09 croiset        Note Added: 0009657                          
05-09-06 15:49 croiset        Note Added: 0009659                          
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