[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:              12-29-2004 17:56 CET
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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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----------------------------------------------------------------------
 tiwai - 12-29-04 17:39 
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Hmm, I don't see problems in rme96.c.
Could you check whether the devices are really opened in O_WRONLY and
O_RDONLY?  Maybe strace can show better.
Also, you can check /proc/asound/card0/pcm*/sub0/* files as the current
state, too.

----------------------------------------------------------------------
 croiset - 12-29-04 17:56 
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For the RO and WO only I am sure because I play and record via a symlink,
so I change the symlink to a new card and restart the two processes and it
works ! For the recorder and nas I am sure, I verify in my logs in the
debug mode.

I have this kind of information (if you need some more information do not
hesitate :

# cat /proc/asound/card0/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 512
buffer_size: 16384
tick_time: 10000
OSS format: S16_LE
OSS channels: 2
OSS rate: 44100
OSS period bytes: 2048
OSS periods: 32
OSS period frames: 512

------------
# cat /proc/asound/card0/pcm0p/sub0/sw_params
tstamp_mode: NONE
period_step: 1
sleep_min: 0
avail_min: 1
xfer_align: 1
start_threshold: 1
stop_threshold: 16384
silence_threshold: 528
silence_size: 528
boundary: 1073741824

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# cat /proc/asound/card0/pcm0c/sub0/hw_params
closed

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# cat /proc/asound/card0/pcm0c/sub0/info
card: 0
device: 0
subdevice: 0
stream: CAPTURE
id: Digi96 IEC958
name: Digi96 IEC958
subname: subdevice https://bugtrack.alsa-project.org/alsa-bug/view.php?id=0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1

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# cat /proc/asound/card0/pcm0c/sub0/sw_params
closed

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# cat /proc/asound/card0/pcm0c/sub0/status
closed

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                          
======================================================================




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