Since nobody answers me, I tried to find the solution, and finally fix my
problem
I release the details for somebody may will have the same problem.
I attached two USB sound cards to Raspberry Pi and after installing ALSA, I
edited the file at path "/etc/modprobe.d/alsa-base.conf" as following:
options snd-usb-audio index=0,1
options snd_bcm2835 index=2
so I can observe both of them by "aplay -L". and also typing "cat
/proc/asound/cards" in command line, will results:
0 [Device ]: USB-Audio - Generic USB Audio Device
Generic USB Audio Device at usb-bcm2708_usb-1.2.2,
full speed
1 [Device_1 ]: USB-Audio - Generic USB Audio Device
Generic USB Audio Device at usb-bcm2708_usb-1.2.3,
full speed
2 [ALSA ]: bcm2835 - bcm2835 ALSA
bcm2835 ALSA
I decided to sun pjsua with " --capture-dev 1 --playback-dev 1" but it
used "Device" the same as past.
But if you want to obtain the actual index of your sound card in ALSA, you
should run "./pjsystest-armv61-unknown-linux-gnueabihf " that located in the
path "pjsip-apps/bin".
Then enter "10" to view sound devices:
0: Tests
00: Run test wizard
01: Device Test
02: Play Tone
03: Play WAV File1
04: Play WAV File2
05: Record Audio
06: Latency Test
07: AEC/AES Test
09: Exit
1: Options
10: View Devices
11: View Settings
It resulted the following on my raspberry:
Enter the menu number:
13:09:17.874 systest.c Running Audio Device List
Audio Device List
Found 20 devices
0: ALSA [default:CARD=Device] (1/1)
1: ALSA [sysdefault:CARD=Device] (1/1)
2: ALSA [front:CARD=Device,DEV=0] (1/1)
3: ALSA [surround40:CARD=Device,DEV=0] (1/1)
4: ALSA [surround41:CARD=Device,DEV=0] (1/1)
5: ALSA [surround50:CARD=Device,DEV=0] (1/1)
6: ALSA [surround51:CARD=Device,DEV=0] (1/1)
7: ALSA [surround71:CARD=Device,DEV=0] (1/1)
8: ALSA [iec958:CARD=Device,DEV=0] (1/1)
9: ALSA [default:CARD=Device_1] (1/1)
10: ALSA [sysdefault:CARD=Device_1] (1/1)
11: ALSA [front:CARD=Device_1,DEV=0] (1/1)
12: ALSA [surround40:CARD=Device_1,DEV=0] (1/1)
13: ALSA [surround41:CARD=Device_1,DEV=0] (1/1)
14: ALSA [surround50:CARD=Device_1,DEV=0] (1/1)
15: ALSA [surround51:CARD=Device_1,DEV=0] (1/1)
16: ALSA [surround71:CARD=Device_1,DEV=0] (1/1)
17: ALSA [iec958:CARD=Device_1,DEV=0] (1/1)
18: ALSA [default:CARD=ALSA] (0/1)
19: ALSA [sysdefault:CARD=ALSA] (0/1)
It shows that my second sound card to name "Device_1" has index of 10.
So I ran the pjsua again, this time as following:
./pjsua-armv61-unknown-linux-gnueabihf --capture-dev 10 --playback-dev
10
Don't hesitate to ask me the questions about it.
From: pjsip [mailto:pjsip-bounces@xxxxxxxxxxxxxxx] On Behalf Of Farzan
Shojaee
Sent: Tuesday, January 05, 2016 12:10 PM
To: 'pjsip list'
Subject: Re: two usb sound cards and pjsip
Pjsua uses sysdefault sound card, I observed the Pjsua logs in more details
and found that inspite of setting the playback and capture device. Pjsua
uses the sysdefault CARD.
How can I change it dynamically???
Has anyone no idea??
From: pjsip [mailto:pjsip-bounces@xxxxxxxxxxxxxxx] On Behalf Of Farzan
Shojaee
Sent: Monday, January 04, 2016 5:21 PM
To: 'pjsip list'
Subject: two usb sound cards and pjsip
I'm using pjsip on Raspberry Pi 1. I compiled and tested it successfully.
I've used an external USB sound, everything is true. I've attached two
external USB sound card now. and I want to use two simultaneous pjsua apps
so that each one work with one of this USB sound cards.
I have edited /etc/modprobe.d/alsa-base.conf as following:
options snd-usb-audio index=0,1
options snd_bcm2835 index=2
I can see two usb sound card by using "aplay -l" with index of 0 and 1.
I can also see it in "cat /proc/asound/cards". It shows my two USB sound
cards.
But when I run pjsua (./pjsua-armv61-unknown-linux-gnueabihf --capture-dev
1 --playback-dev 1) it runs successfully and shows that usb sound card 1
is selected:
pjsua_aud.c Set sound device: capture=1, playback=1
pjsua_app.c .Turning sound device ON
pjsua_aud.c .Opening sound device PCM at 8000/1/20ms
but USB sound card 0 is active yet and audio heard in it, and USB sound card
0 doesn't work anyway.
Has anyone any idea??
Help me plz
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