can somebody show me an example asound configuration for dmixing with hifi bluetooth speakers/headset

DISCUSSION Jelle de Jong 2 participants 10 messages Dec 21, 2008 – Jan 26, 2009 1 message not in the archive Bluetooth drivers

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Jelle de Jong

author

2008-12-21 11:38 UTC #0 lore raw

Hello everybody,

I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth headset.

I am using only alsa and no pulseaudio, esd, jack, mas of something else just alsa with asoundrc configuration files and no graphical environment.

Can somebody show me an example asoundrc config file to make it possible to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a working asoundrc configuration file that allows me to play multiple audio sources at the same time.

Thanks in advance,

Jelle

pcm.headset {
    type bluetooth
    #~ device 00:0D:18:A0:35:70
    #~ device 00:53:53:FB:7E:9C # Nokia BH-801
    device 00:0C:55:D1:C9:78 # Motorola S805
    #~ device 00:0D:FD:18:6E:3C # Motorola S9
    #~ device 20:07:09:15:A9:5A # Samsung WEP210
    profile hifi
    #~ profile voice
    #~ profile auto
    mode stereo
    #~ mode joint
}

pcm.softvol {
type softvol
slave.pcm headset
control.name Headset
control.card 0
}
pcm.!default {
#~ type hw
#~ card 0
type plug
slave.pcm softvol
}

Jelle de Jong

author

2008-12-29 10:18 UTC #1 lore raw

Quoted 16 lines

Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a working asoundrc configuration file that allows me to play multiple audio sources at the same time.

Quoted 4 lines

Thanks in advance,
Jelle

Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?

Thanks in advance for any help,

Best regards,

Jelle

Jelle de Jong

author

2009-01-06 10:07 UTC #2 lore raw

Quoted 21 lines · Jelle de Jong

Quoted 16 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle

Quoted 8 lines

Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Thanks in advance for any help,
Best regards,
Jelle

Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.

Please help,

Best regards,

Jelle

A message that is not in the archive (sent off-list or not yet received): [email protected]

Jelle de Jong

author

2009-01-07 09:52 UTC #4 lore raw

Quoted 47 lines · event

Quoted 33 lines · Jelle de Jong
Quoted 20 lines · Jelle de Jong
Quoted 16 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle
Quoted 8 lines
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
Quoted 5 lines
Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?

Quoted 2 lines

Vale,
event

Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.

I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.

Thanks in advance for any help,

Best regards,

Jelle

pcm.headset {
    type bluetooth
    #~ device 00:0D:18:A0:35:70
    #~ device 00:53:53:FB:7E:9C # Nokia BH-801
    #~ device 00:0C:55:D1:C9:78 # Motorola S805
    #~ device 00:0D:FD:18:6E:3C # Motorola S9
    #~ device 20:07:09:15:A9:5A # Samsung WEP210
    #~ python .simple-agent.py hci0 00:1A:80:AB:0A:B1
    device 00:1A:80:AB:0A:B1 # Sony SRS-BT100
    profile hifi
    #profile voice
    #profile auto
    mode stereo
}

pcm.softvol {
type softvol
slave.pcm headset
control.name Headset
control.card 0
}
pcm.!default {
#~ type hw
#~ card 0
type plug
slave.pcm softvol
}

# first terminal with the first audio stream
------------------------------------------------------------------------

$ speaker-test -c2

speaker-test 1.0.16

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 6144 to 6144
Period size range from 512 to 2048
Using max buffer size 6144
Periods = 4
was set period_size = 2048
was set buffer_size = 6144
0 - Front Left
1 - Front Right
Time per period = 5.865569
0 - Front Left
1 - Front Right
Time per period = 5.999629
0 - Front Left
1 - Front Right
^C

# second terminal with the second audio stream, that fails
------------------------------------------------------------------------

$ speaker-test -c2

speaker-test 1.0.16

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 6144 to 6144
Period size range from 512 to 2048
Using max buffer size 6144
Periods = 4
was set period_size = 2048
was set buffer_size = 6144
ALSA lib pcm_bluetooth.c:712:(bluetooth_a2dp_hw_params) BT_SETCONFIGURATION failed : Input/output error(5) Unable to set hw params for playback: Input/output error
Setting of hwparams failed: Input/output error

pcm.headset {
    type bluetooth
    #~ device 00:0D:18:A0:35:70
    #~ device 00:53:53:FB:7E:9C # Nokia BH-801
    #~ device 00:0C:55:D1:C9:78 # Motorola S805
    #~ device 00:0D:FD:18:6E:3C # Motorola S9
    #~ device 20:07:09:15:A9:5A # Samsung WEP210
    #~ python .simple-agent.py hci0 00:1A:80:AB:0A:B1
    device 00:1A:80:AB:0A:B1 # Sony SRS-BT100
    profile hifi
    #profile voice
    #profile auto
    mode stereo
}

pcm.!default {
type plug
slave.pcm dmixer
}
pcm.dmixer {
type dmix
slave.pcm headset
}
ctl.dmixer {
type hw
card 0
}
pcm.dsp {
type plug
slave.pcm dmixer
}
ctl.mixer {
type hw
card 0
}

# first terminal with the first audio stream
------------------------------------------------------------------------

$ speaker-test -c2

speaker-test 1.0.16

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
ALSA lib pcm_direct.c:1479:(_snd_pcm_direct_get_slave_ipc_offset) Invalid type 'bluetooth' for slave PCM

Playback open error: -22,Invalid argument
ALSA lib pcm_direct.c:1479:(_snd_pcm_direct_get_slave_ipc_offset) Invalid type 'bluetooth' for slave PCM

Playback open error: -22,Invalid argument
^C

# first terminal with the first audio stream
------------------------------------------------------------------------

$ speaker-test -c2

speaker-test 1.0.16

Playback open error: -22,Invalid argument
ALSA lib pcm_direct.c:1479:(_snd_pcm_direct_get_slave_ipc_offset) Invalid type 'bluetooth' for slave PCM

Playback open error: -22,Invalid argument
^C

pcm.headset {
    type bluetooth
    #~ device 00:0D:18:A0:35:70
    #~ device 00:53:53:FB:7E:9C # Nokia BH-801
    #~ device 00:0C:55:D1:C9:78 # Motorola S805
    #~ device 00:0D:FD:18:6E:3C # Motorola S9
    #~ device 20:07:09:15:A9:5A # Samsung WEP210
    #~ python .simple-agent.py hci0 00:1A:80:AB:0A:B1
    device 00:1A:80:AB:0A:B1 # Sony SRS-BT100
    profile hifi
    #profile voice
    #profile auto
    mode stereo
}

pcm.softvol {
type softvol
slave.pcm dmix:headset
control.name Master
control.card 0
}

pcm.!default {
type plug
slave.pcm softvol
}

ctl.!default {
type hw
card 0
}

# first terminal with the first audio stream
------------------------------------------------------------------------

$ speaker-test -c2

speaker-test 1.0.16

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
ALSA lib confmisc.c:768:(parse_card) cannot find card 'headset'
ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_concat returned error: No such device ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:3513:(_snd_config_evaluate) function snd_func_refer returned error: No such device ALSA lib conf.c:3985:(snd_config_expand) Evaluate error: No such device
ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM dmix:headset
Playback open error: -19,No such device
^C

event

2009-01-09 11:48 UTC #5 lore raw

Quoted 67 lines · Jelle de Jong

Quoted 52 lines · event
Quoted 37 lines · Jelle de Jong
Quoted 27 lines · Jelle de Jong
Quoted 19 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else
just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible
to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Quoted 5 lines
Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
Quoted 5 lines
Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?
Quoted 2 lines
Vale,
event
Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.
I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.

Quoted 6 lines

Thanks in advance for any help,
Best regards,
Jelle

Hello Jelle,

I will setup the environment and do some tries as well. I'll come back to you when some outcome will be available

Vale,
Leonid Movshovich

event

2009-01-10 14:39 UTC #6 lore raw

Quoted 77 lines · event

Quoted 69 lines · Jelle de Jong
Quoted 54 lines · event
Quoted 39 lines · Jelle de Jong
Quoted 29 lines · Jelle de Jong
Quoted 21 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth
headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else
just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible
to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a
working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Quoted 5 lines
Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
Quoted 5 lines
Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?
Quoted 2 lines
Vale,
event
Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.
I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.
Quoted 6 lines
Thanks in advance for any help,
Best regards,
Jelle

Quoted 8 lines

Hello Jelle,
I will setup the environment and do some tries as well. I'll come back to you when some outcome will be available
Vale,
Leonid Movshovich

Hello Jelle,

You need to setup a passkey agent (for bluez 3.x) for connection to succeed. I've attached one simple

For dmix setups you have to define slaves as "pcm_slave." not "pcm." is .asoundrc

Hope this helps.

Vale,
Leonid Movshovich

pcm.headset {
	type bluetooth
	autoconnect true
	device 00:02:78:DD:FE:EB
	profile hifi
}

Jelle de Jong

author

2009-01-11 13:33 UTC #7 lore raw

Quoted 89 lines · event

Quoted 74 lines · event
Quoted 67 lines · Jelle de Jong
Quoted 53 lines · event
Quoted 39 lines · Jelle de Jong
Quoted 29 lines · Jelle de Jong
Quoted 21 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth
headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else
just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible
to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a
working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Quoted 5 lines
Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
Quoted 5 lines
Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?
Quoted 2 lines
Vale,
event
Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.
I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.
Quoted 6 lines
Thanks in advance for any help,
Best regards,
Jelle
Quoted 8 lines
Hello Jelle,
I will setup the environment and do some tries as well. I'll come back to you when some outcome will be available
Vale,
Leonid Movshovich
Hello Jelle,
You need to setup a passkey agent (for bluez 3.x) for connection to succeed. I've attached one simple

Quoted 8 lines

For dmix setups you have to define slaves as "pcm_slave." not "pcm." is .asoundrc
Hope this helps.
Vale,
Leonid Movshovich

Thank you Leonid for responding. I gave it a good try again, with trial and error with all kind of variations of the different asoundrc files I attached in my previous mails. I am unable to get it working with two audio streams to one bluetooth devices (mixing).

I ended up with lots of messages like "Unknown field pcm_slave". Could you please post a complete asoundrc file that has been tested to work with two speaker-test -c2 programs running beside each other?

Just to be clear, I have no problem getting my bluetooth audio device to work with single audio streams, I would like to have mixing support working so I can play multiple audio sources at the same time.

Thanks in advance,

Jelle

event

2009-01-17 01:28 UTC #8 lore raw

Quoted 108 lines · Jelle de Jong

Quoted 89 lines · event
Quoted 74 lines · event
Quoted 67 lines · Jelle de Jong
Quoted 53 lines · event
Quoted 39 lines · Jelle de Jong
Quoted 29 lines · Jelle de Jong
Quoted 21 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth
headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else
just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible
to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a
working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Quoted 5 lines
Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
Quoted 5 lines
Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?
Quoted 2 lines
Vale,
event
Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.
I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.
Quoted 6 lines
Thanks in advance for any help,
Best regards,
Jelle
Quoted 8 lines
Hello Jelle,
I will setup the environment and do some tries as well. I'll come back to you when some outcome will be available
Vale,
Leonid Movshovich
Hello Jelle,
You need to setup a passkey agent (for bluez 3.x) for connection to succeed. I've attached one simple
Quoted 8 lines
For dmix setups you have to define slaves as "pcm_slave." not "pcm." is .asoundrc
Hope this helps.
Vale,
Leonid Movshovich
Thank you Leonid for responding. I gave it a good try again, with trial and error with all kind of variations of the different asoundrc files I attached in my previous mails. I am unable to get it working with two audio streams to one bluetooth devices (mixing).
I ended up with lots of messages like "Unknown field pcm_slave". Could you please post a complete asoundrc file that has been tested to work with two speaker-test -c2 programs running beside each other?

Quoted 8 lines

Just to be clear, I have no problem getting my bluetooth audio device to work with single audio streams, I would like to have mixing support working so I can play multiple audio sources at the same time.
Thanks in advance,
Jelle

Hi Jelle,

I've digged there a bit and found out the following:
1. you cannot use dmix over bluetooth as bluetooth is implemented as a plugin but dmix works with cards only
2. bluetooth itself doesn't do mixing

so dmix is not a thing which could help you here, but...
I have one crazy idea for you :)
you can try to setup alsa jACK plugin and then setup jACK to use your alsa bluetooth device. Thus if jACK supports mixing itself (which most probably the truth) the whole setup should work as you want. Unfortunately, I don't have jACK installed so cannot give it a try.

Vale,
Leonid Movshovich

Jelle de Jong

author

2009-01-17 10:29 UTC #9 lore raw

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Hash: SHA1

Quoted 129 lines · event

Quoted 106 lines · Jelle de Jong
Quoted 88 lines · event
Quoted 74 lines · event
Quoted 67 lines · Jelle de Jong
Quoted 53 lines · event
Quoted 39 lines · Jelle de Jong
Quoted 29 lines · Jelle de Jong
Quoted 21 lines
Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth
headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else
just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible
to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a
working asoundrc configuration file that allows me to play multiple audio sources at the same time.
Quoted 4 lines
Thanks in advance,
Jelle
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
Quoted 5 lines
Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
Quoted 5 lines
Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?
Quoted 2 lines
Vale,
event
Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.
I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.
Quoted 6 lines
Thanks in advance for any help,
Best regards,
Jelle
Quoted 8 lines
Hello Jelle,
I will setup the environment and do some tries as well. I'll come back to you when some outcome will be available
Vale,
Leonid Movshovich
Hello Jelle,
You need to setup a passkey agent (for bluez 3.x) for connection to succeed. I've attached one simple
Quoted 8 lines
For dmix setups you have to define slaves as "pcm_slave." not "pcm." is .asoundrc
Hope this helps.
Vale,
Leonid Movshovich
Thank you Leonid for responding. I gave it a good try again, with trial and error with all kind of variations of the different asoundrc files I attached in my previous mails. I am unable to get it working with two audio streams to one bluetooth devices (mixing).
I ended up with lots of messages like "Unknown field pcm_slave". Could you please post a complete asoundrc file that has been tested to work with two speaker-test -c2 programs running beside each other?
Quoted 8 lines
Just to be clear, I have no problem getting my bluetooth audio device to work with single audio streams, I would like to have mixing support working so I can play multiple audio sources at the same time.
Thanks in advance,
Jelle
Hi Jelle,
I've digged there a bit and found out the following:
1. you cannot use dmix over bluetooth as bluetooth is implemented as a plugin but dmix works with cards only
2. bluetooth itself doesn't do mixing
so dmix is not a thing which could help you here, but...
I have one crazy idea for you :)
you can try to setup alsa jACK plugin and then setup jACK to use your alsa bluetooth device. Thus if jACK supports mixing itself (which most probably the truth) the whole setup should work as you want. Unfortunately, I don't have jACK installed so cannot give it a try.

Quoted 2 lines

Vale,
Leonid Movshovich

Thank you Leonid for confirming my issues getting mixing to work with alsa and bluetooth.

I don't really like jack or pulseaudio, and would like to stick with alsa a while more until all the bugs, usability, and performance issues are gone. I do not feel like going into there issues in this mail, because the mail would get 4 pages long, please search with google for "pulseaudio broken" and find some answers.

My real question is, what would it take to fix the alsa plugin to make it possible to use streaming. Maybe bluetooth devices should work as cards... this would also solve the problem that I cant use bluetooth without a dummy usb soundcard insert into my system. Alsa would not start without finding a soundcard...

Is somebody willing to take a look at the alsa system for bluetooth? What would resources or rewards would you like to fix it?

Best regards,

Jelle
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Jelle de Jong

author

2009-01-26 14:02 UTC #10 lore raw

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Hello everybody,
I have been periodically trying to get multiple audio sources to play together (dmixing) to a hifi bluetooth speaker system or hifi bluetooth
headset.
I am using only alsa and no pulseaudio, esd, jack, mas of something else
just alsa with asoundrc configuration files and no graphical environment.
Can somebody show me an example asoundrc config file to make it possible
to use software audio mixing with my bluetooth devices. If this is currently not possible, please tell why and what we can do about it. I am willing to donate some payal money to the person providing me with a
working asoundrc configuration file that allows me to play multiple audio sources at the same time.
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Thanks in advance,
Jelle
Bumping up this mail, I would really like to see a solution for my problem or receive information why the problem is not possible not solvable?
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Thanks in advance for any help,
Best regards,
Jelle
Bump for the mail, I still have this issue, and would really appreciate somebody taking a look at. I don't know if there is code limitation or that it is just a asoundrc configuration issue.
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Please help,
Best regards,
Jelle
Hello Jelle,
could you please provide more details:
1. what happen when you play from two sources simultaneously?
2. what happen if you play only one source?
3. please provide your asoundrc (at least the pcm.bluetooth part)
4. does it work fine with other output device?
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Vale,
event
Thank you for responding, I had reattached the configurations and outputs with some more info. I have already spent a bloody awful lot of time on testing with trial and error. I am not an alsa or bluetooth developer I cannot get it to work. If a capable person could get it working I would be very great full.
I am also not able to get bluetooth working without adding a sound card to my system, so i put in a usb sound dongle just to get bluetooth with alsa working, alsa won't load its modules without it first finding a soundcard. It is all very very confusing.
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Thanks in advance for any help,
Best regards,
Jelle
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Hello Jelle,
I will setup the environment and do some tries as well. I'll come back to you when some outcome will be available
Vale,
Leonid Movshovich
Hello Jelle,
You need to setup a passkey agent (for bluez 3.x) for connection to succeed. I've attached one simple
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For dmix setups you have to define slaves as "pcm_slave." not "pcm." is .asoundrc
Hope this helps.
Vale,
Leonid Movshovich
Thank you Leonid for responding. I gave it a good try again, with trial and error with all kind of variations of the different asoundrc files I attached in my previous mails. I am unable to get it working with two audio streams to one bluetooth devices (mixing).
I ended up with lots of messages like "Unknown field pcm_slave". Could you please post a complete asoundrc file that has been tested to work with two speaker-test -c2 programs running beside each other?
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Just to be clear, I have no problem getting my bluetooth audio device to work with single audio streams, I would like to have mixing support working so I can play multiple audio sources at the same time.
Thanks in advance,
Jelle
Hi Jelle,
I've digged there a bit and found out the following:
1. you cannot use dmix over bluetooth as bluetooth is implemented as a plugin but dmix works with cards only
2. bluetooth itself doesn't do mixing
so dmix is not a thing which could help you here, but...
I have one crazy idea for you :)
you can try to setup alsa jACK plugin and then setup jACK to use your alsa bluetooth device. Thus if jACK supports mixing itself (which most probably the truth) the whole setup should work as you want. Unfortunately, I don't have jACK installed so cannot give it a try.
Quoted 2 lines
Vale,
Leonid Movshovich
Thank you Leonid for confirming my issues getting mixing to work with alsa and bluetooth.
I don't really like jack or pulseaudio, and would like to stick with alsa a while more until all the bugs, usability, and performance issues are gone. I do not feel like going into there issues in this mail, because the mail would get 4 pages long, please search with google for "pulseaudio broken" and find some answers.
My real question is, what would it take to fix the alsa plugin to make it possible to use streaming. Maybe bluetooth devices should work as cards... this would also solve the problem that I cant use bluetooth without a dummy usb soundcard insert into my system. Alsa would not start without finding a soundcard...

Quoted 6 lines

Is somebody willing to take a look at the alsa system for bluetooth? What would resources or rewards would you like to fix it?
Best regards,
Jelle

Hello everybody,

I am popping up this email again, I would really like to see this issue fixed, would somebody be willing to take a look at it?

Best regards,

Jelle