[alsa-devel] dmix problems with analog out (HDMI out works fine with dmix)
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am attempting to share (mix) the analog output between Asterisk and aplay. However, when Asterisk is running, my application throws an error when attempting to play a wave file via aplay. If I stop Asterisk, aplay plays the wave file just fine. If I remove the asound.conf file, Asterisk and aplay are both happy and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for other reasons. What is wrong with it. I have even tried replacing dmix with dshare and get the same bad behavior. We are running CentOS 6.0. As a caveat, I am attempting to use dmix with analog audio. If I use it with HDMI audio, it works flawlessly (same asound.conf with tweek to specify HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Best Regards,
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am attempting to share (mix) the analog output between Asterisk and aplay. However, when Asterisk is running, my application throws an error when attempting to play a wave file via aplay. If I stop Asterisk, aplay plays the wave file just fine. If I remove the asound.conf file, Asterisk and aplay are both happy and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for other reasons. What is wrong with it. I have even tried replacing dmix with dshare and get the same bad behavior. We are running CentOS 6.0. As a caveat, I am attempting to use dmix with analog audio. If I use it with HDMI audio, it works flawlessly (same asound.conf with tweek to specify HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
On Thu, Sep 29, 2011 at 2:36 AM, Takashi Iwai tiwai@suse.de wrote:
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am attempting to share (mix) the analog output between Asterisk and aplay. However, when Asterisk is running, my application throws an error when attempting to
play
a wave file via aplay. If I stop Asterisk, aplay plays the wave file
just
fine. If I remove the asound.conf file, Asterisk and aplay are both
happy
and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for
other
reasons. What is wrong with it. I have even tried replacing dmix with dshare and get the same bad behavior. We are running CentOS 6.0. As a caveat, I am attempting to use dmix with analog audio. If I use it with HDMI audio, it works flawlessly (same asound.conf with tweek to specify HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
Hi Takashi,
Thanks for the quick response. Yes, the HD-audio stream open fails because Asterisk has previously opened it. aplay cannot open it (error -22). However, dmix should remedy the situation. It should provide software mixing for Asterisk and aplay so that the output of both is mixed and output to the analog audio channel. I will try your latest drivers.
Best Regards,
On Thu, Sep 29, 2011 at 8:22 AM, Robert Krakora < rob.krakora@messagenetsystems.com> wrote:
On Thu, Sep 29, 2011 at 2:36 AM, Takashi Iwai tiwai@suse.de wrote:
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am attempting
to
share (mix) the analog output between Asterisk and aplay. However, when Asterisk is running, my application throws an error when attempting to
play
a wave file via aplay. If I stop Asterisk, aplay plays the wave file
just
fine. If I remove the asound.conf file, Asterisk and aplay are both
happy
and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for
other
reasons. What is wrong with it. I have even tried replacing dmix with dshare and get the same bad behavior. We are running CentOS 6.0. As a caveat, I am attempting to use dmix with analog audio. If I use it with HDMI audio, it works flawlessly (same asound.conf with tweek to specify HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
Hi Takashi,
Thanks for the quick response. Yes, the HD-audio stream open fails because Asterisk has previously opened it. aplay cannot open it (error -22). However, dmix should remedy the situation. It should provide software mixing for Asterisk and aplay so that the output of both is mixed and output to the analog audio channel. I will try your latest drivers.
Best Regards,
-- Rob Krakora MessageNet Systems 101 East Carmel Dr. Suite 105 Carmel, IN 46032 (317)566-1677 Ext 212 (317)663-0808 Fax
This same scenario works flawlessly with HDMI channel. Asterisk and aplay out put is mixed and send to the HDMI channel.
At Thu, 29 Sep 2011 08:22:39 -0400, Robert Krakora wrote:
On Thu, Sep 29, 2011 at 2:36 AM, Takashi Iwai tiwai@suse.de wrote:
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am attempting to share (mix) the analog output between Asterisk and aplay. However, when Asterisk is running, my application throws an error when attempting to
play
a wave file via aplay. If I stop Asterisk, aplay plays the wave file
just
fine. If I remove the asound.conf file, Asterisk and aplay are both
happy
and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for
other
reasons. What is wrong with it. I have even tried replacing dmix with dshare and get the same bad behavior. We are running CentOS 6.0. As a caveat, I am attempting to use dmix with analog audio. If I use it with HDMI audio, it works flawlessly (same asound.conf with tweek to specify HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
Hi Takashi,
Thanks for the quick response. Yes, the HD-audio stream open fails because Asterisk has previously opened it. aplay cannot open it (error -22).
-22 is -EINVAL, and it's not -EBUSY or -EAGAIN. If a blocking open is the problem, it should have been -EAGAIN or such. That is, usually something conflicts with the opened stream.
Takashi
On Thu, Sep 29, 2011 at 8:32 AM, Takashi Iwai tiwai@suse.de wrote:
At Thu, 29 Sep 2011 08:22:39 -0400, Robert Krakora wrote:
On Thu, Sep 29, 2011 at 2:36 AM, Takashi Iwai tiwai@suse.de wrote:
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am
attempting to
share (mix) the analog output between Asterisk and aplay. However,
when
Asterisk is running, my application throws an error when attempting
to
play
a wave file via aplay. If I stop Asterisk, aplay plays the wave file
just
fine. If I remove the asound.conf file, Asterisk and aplay are both
happy
and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for
other
reasons. What is wrong with it. I have even tried replacing dmix
with
dshare and get the same bad behavior. We are running CentOS 6.0. As
a
caveat, I am attempting to use dmix with analog audio. If I use it
with
HDMI audio, it works flawlessly (same asound.conf with tweek to
specify
HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p'
failed
(-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
Hi Takashi,
Thanks for the quick response. Yes, the HD-audio stream open fails
because
Asterisk has previously opened it. aplay cannot open it (error -22).
-22 is -EINVAL, and it's not -EBUSY or -EAGAIN. If a blocking open is the problem, it should have been -EAGAIN or such. That is, usually something conflicts with the opened stream.
Takashi
Hi Takashi,
You are the man! Your latest drivers have eliminated this issue! What did you have to change to fix this?
Best Regards,
At Thu, 29 Sep 2011 08:43:32 -0400, Robert Krakora wrote:
On Thu, Sep 29, 2011 at 8:32 AM, Takashi Iwai tiwai@suse.de wrote:
At Thu, 29 Sep 2011 08:22:39 -0400, Robert Krakora wrote:
On Thu, Sep 29, 2011 at 2:36 AM, Takashi Iwai tiwai@suse.de wrote:
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am
attempting to
share (mix) the analog output between Asterisk and aplay. However,
when
Asterisk is running, my application throws an error when attempting
to
play
a wave file via aplay. If I stop Asterisk, aplay plays the wave file
just
fine. If I remove the asound.conf file, Asterisk and aplay are both
happy
and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us for
other
reasons. What is wrong with it. I have even tried replacing dmix
with
dshare and get the same bad behavior. We are running CentOS 6.0. As
a
caveat, I am attempting to use dmix with analog audio. If I use it
with
HDMI audio, it works flawlessly (same asound.conf with tweek to
specify
HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p'
failed
(-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
Hi Takashi,
Thanks for the quick response. Yes, the HD-audio stream open fails
because
Asterisk has previously opened it. aplay cannot open it (error -22).
-22 is -EINVAL, and it's not -EBUSY or -EAGAIN. If a blocking open is the problem, it should have been -EAGAIN or such. That is, usually something conflicts with the opened stream.
Takashi
Hi Takashi,
You are the man! Your latest drivers have eliminated this issue! What did you have to change to fix this?
Honestly I have no idea ;) Possibly it's related with the recent rewrite of VIA driver.
Takashi
On Thu, Sep 29, 2011 at 8:43 AM, Robert Krakora < rob.krakora@messagenetsystems.com> wrote:
On Thu, Sep 29, 2011 at 8:32 AM, Takashi Iwai tiwai@suse.de wrote:
At Thu, 29 Sep 2011 08:22:39 -0400, Robert Krakora wrote:
On Thu, Sep 29, 2011 at 2:36 AM, Takashi Iwai tiwai@suse.de wrote:
At Wed, 28 Sep 2011 12:29:05 -0400, Robert Krakora wrote:
Hi All,
I am using ALSA 1.0.24 with the attached asound.conf. I am
attempting to
share (mix) the analog output between Asterisk and aplay. However,
when
Asterisk is running, my application throws an error when attempting
to
play
a wave file via aplay. If I stop Asterisk, aplay plays the wave
file
just
fine. If I remove the asound.conf file, Asterisk and aplay are both
happy
and share the analog output just find with the default ALSA dmix implementation. However, we need this asound.conf to work for us
for
other
reasons. What is wrong with it. I have even tried replacing dmix
with
dshare and get the same bad behavior. We are running CentOS 6.0.
As a
caveat, I am attempting to use dmix with analog audio. If I use it
with
HDMI audio, it works flawlessly (same asound.conf with tweek to
specify
HDMI). Thanks in advance for your help.
[root@devkrakorar snd]# su silentm -c "aplay -Dplug:dmixer /usr/share/sounds/alsa/Front_ Center.wav" ALSA lib pcm_hw.c:1293:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p'
failed
(-22): Invalid argument
ALSA lib pcm_dmix.c:1068:(snd_pcm_dmix_open) unable to open slave aplay: main:660: audio open error: Invalid argument [root@devkrakorar snd]#
Looks like the open of HD-audio stream failed by some reason. When you open via aplay, is the corresponding stream already opened by another? Take a look at /proc/asound/card0/pcm0p/sub0/* files.
Also, try the latest alsa-driver snapshot in ftp://ftp.suse.com/pub/people/tiwai/snapshot/
Takashi
Hi Takashi,
Thanks for the quick response. Yes, the HD-audio stream open fails
because
Asterisk has previously opened it. aplay cannot open it (error -22).
-22 is -EINVAL, and it's not -EBUSY or -EAGAIN. If a blocking open is the problem, it should have been -EAGAIN or such. That is, usually something conflicts with the opened stream.
Takashi
Hi Takashi,
You are the man! Your latest drivers have eliminated this issue! What did you have to change to fix this?
Best Regards,
-- Rob Krakora MessageNet Systems 101 East Carmel Dr. Suite 105 Carmel, IN 46032 (317)566-1677 Ext 212 (317)663-0808 Fax
Hi Takashi,
So, are these drivers almost ready for release? Are they in alpha or beta? Is there a patch that can be made to the existing 0.1.24.x drivers?
Best Regards,
participants (2)
-
Robert Krakora -
Takashi Iwai