This is not a duplicated question, other user had the same problem but this question add more info. I'm working on Ubuntu 18.
When I receive a call using VoIP with and asterisk server, my python script crash. This python script works in other computer but not in mine. So I tried to diagnose the pjsip dependency because the problem come from there.
I use pjsip as dependency of Python Most Voip Library
The pjsip installation process is the following:
mkdir -p pjsip
cd pjsip
svn co http://svn.pjsip.org/repos/pjproject/trunk/
cd trunk
./configure CFLAGS='-fPIC' -with-ffmpeg
make dep -j4
make clean
make -j4
sudo make install
cd pjsip-apps/src/python/
python2 setup.py install --user
After that, I use the test binary to check my computer:
./pjsip/trunk/pjsip-apps/bin/pjsystest-x86_64-unknown-linux-gnu
The test menu is the following:
17:54:00.264 os_core_unix.c !pjlib 2.8-svn for POSIX initialized
17:54:00.265 sip_endpoint.c .Creating endpoint instance...
17:54:00.265 pjlib .select() I/O Queue created (0x55d462ccde00)
17:54:00.265 sip_endpoint.c .Module "mod-msg-print" registered
17:54:00.265 sip_transport.c .Transport manager created.
17:54:00.265 pjsua_core.c .PJSUA state changed: NULL --> CREATED
17:54:00.266 sip_endpoint.c .Module "mod-pjsua-log" registered
17:54:00.266 sip_endpoint.c .Module "mod-tsx-layer" registered
17:54:00.266 sip_endpoint.c .Module "mod-stateful-util" registered
17:54:00.266 sip_endpoint.c .Module "mod-ua" registered
17:54:00.266 sip_endpoint.c .Module "mod-100rel" registered
17:54:00.266 sip_endpoint.c .Module "mod-pjsua" registered
17:54:00.266 sip_endpoint.c .Module "mod-invite" registered
17:54:01.427 alsa_dev.c ..ALSA driver found 32 devices
17:54:01.427 alsa_dev.c ..ALSA initialized
17:54:01.427 pjlib ..select() I/O Queue created (0x55d462d58e28)
17:54:01.430 sip_endpoint.c .Module "mod-evsub" registered
17:54:01.430 sip_endpoint.c .Module "mod-presence" registered
17:54:01.430 sip_endpoint.c .Module "mod-mwi" registered
17:54:01.430 sip_endpoint.c .Module "mod-refer" registered
17:54:01.430 sip_endpoint.c .Module "mod-pjsua-pres" registered
17:54:01.430 sip_endpoint.c .Module "mod-pjsua-im" registered
17:54:01.430 sip_endpoint.c .Module "mod-pjsua-options" registered
17:54:01.430 pjsua_core.c .1 SIP worker threads created
17:54:01.430 pjsua_core.c .pjsua version 2.8-svn for Linux-4.15.0.43/x86_64/glibc-2.27 initialized
17:54:01.430 pjsua_core.c .PJSUA state changed: CREATED --> INIT
17:54:01.430 pjsua_core.c PJSUA state changed: INIT --> STARTING
17:54:01.430 sip_endpoint.c .Module "mod-unsolicited-mwi" registered
17:54:01.430 pjsua_core.c .PJSUA state changed: STARTING --> RUNNING
M E N U :
---------
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
Enter the menu number: 03
Choosing option 03 I get the following output:
This test will play input.8.wav file to the speaker. Please listen carefully for audio impairments such as stutter. Let this test run for a while to make sure that everything is okay. Press OK to start, CANCEL to skip
1:OK 9:Cancel
1
17:54:28.350 systest.c Running WAV File Playback Test
17:54:28.350 pjsua_aud.c Creating file player: input.8.wav..
17:54:28.350 pjsua_aud.c .Unable to open file for playback: Not found (PJ_ENOTFOUND) [status=70006]
17:54:28.351 pjsua_aud.c Creating file player: ../../tests/pjsua/wavs/input.8.wav..
17:54:28.351 wav_player.c .File player '../../tests/pjsua/wavs/input.8.wav' created: samp.rate=8000, ch=1, bufsize=4KB, filesize=67KB
17:54:28.351 pjsua_aud.c .Player created, id=0, slot=1
17:54:28.351 pjsua_aud.c Conf connect: 1 --> 0
17:54:28.351 pjsua_aud.c .Set sound device: capture=-1, playback=-2
17:54:28.351 pjsua_aud.c ..Opening sound device (speaker + mic) PCM@8000/1/20ms
17:54:28.412 conference.c !.Port 1 (../../tests/pjsua/wavs/input.8.wav) transmitting to port 0 (default)
That is the same problem that crash my python script when I have an incoming call:
Incoming call from "test_user" <sip:test_user@192.168.30.30>
in _start_call_sound_in
[Wed Jan 23 17:56:31 2019] 17:56:31.426 pjsua_aud.c ...Unable to open file for playback: Not found (PJ_ENOTFOUND) [status=70006]
Unhandled exception in thread started by <function _worker_thread_main at 0x7fb34d50ba28>
Traceback (most recent call last):
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/pjsua.py", line 2951, in _worker_thread_main
time.sleep(0.050)
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/pjsua.py", line 2899, in _cb_on_incoming_call
_lib._cb_on_incoming_call(acc_id, call_id, rdata)
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/pjsua.py", line 2781, in _cb_on_incoming_call
acc._cb.on_incoming_call( Call(self, call_id) )
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/most/voip/api_backend.py", line 602, in on_incoming_call
_start_call_sound_in()
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/most/voip/api_backend.py", line 128, in _start_call_sound_in
player_in_id = pj.Lib.instance().create_player(sound_file,loop=True)
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/pjsua.py", line 2579, in create_player
self._err_check("create_player()", self, err)
File "/home/ubuntu_user/.local/lib/python2.7/site-packages/pjsua.py", line 2723, in _err_check
raise Error(op_name, obj, err_code, err_msg)
pjsua.Error: Object: Lib, operation=create_player(), error=Not found (PJ_ENOTFOUND)
The problem comes from pjsip, and is related with play streaming audio.
Ubuntu is using ALSA by default, and it seems that everything works. I have sox utils, and play wav files properly.
Some ideas?
After debugging the python library, I found that when a call arrive, a wav file try to be used. I installed python library using --user option, and the point where the library look for the file was wrong.
Using --user option make installation in a non-standard system path. If a call arrives the wav file won't be found and python library crash. To solve this, just add a symbolic link to the correct path:
sudo ln -s /usr/local/lib/python2.7/dist-packages/data/ ${HOME}/.local/lib/python2.7/site-packages/
ls # output shall contain sounds folder
With this link, the library accept calls playing the wav file.