Vosk integration with Freeswitch - mod_vosk - what is the status?

[lafar6502]

Hi, i would like to try Vosk with Freeswitch for some automatic keyword recognition in voip calls (yes, no, numbers, etc) and see how far i get.
But it's a bit unclear to me what is the supported integration approach for Freeswitch
About 2 years ago you tried to merge a pull request for 'mod_vosk' into Freeswitch repo, but in the discussion that followed you decided to host it as independent project / git repo instead.
But i cant find any such project (mod_vosk). Does it exist at all? Or have you decided to go with some different approach?
What is the easiest way to connect Vosk engine with Freeswitch?

Best regards
Rafal

[nshmyrev]

Our integration code reside here, you can simply build it yourself:

https://github.com/alphacep/freeswitch/tree/master/src/mod/asr_tts/mod_vosk

You also need alphacep/libks. The pull request for vosk into freeswitch is still pending due to libks things:

signalwire/freeswitch#578

signalwire/libks#74

[nshmyrev]

You can also use vosk unimrcp server instead and freeswitch unimrcp plugin:

https://github.com/alphacep/unimrcp-vosk-plugin/tree/vosk-plugin

[lafar6502]

Thanks!

[cyrenity]

@nshmyrev I am trying to build mod_vost with freeswitch 1.10.7 but getting the following error when I try to load the module

[CRIT] switch_loadable_module.c:1750 Error Loading module /usr/local/freeswitch/mod/mod_vosk.so
**/usr/local/freeswitch/mod/mod_vosk.so: undefined symbol: __ks_json_add_string_to_object**

[andreslavariega]

@nshmyrev I am trying to build mod_vost with freeswitch 1.10.7 but getting the following error when I try to load the module

[CRIT] switch_loadable_module.c:1750 Error Loading module /usr/local/freeswitch/mod/mod_vosk.so
**/usr/local/freeswitch/mod/mod_vosk.so: undefined symbol: __ks_json_add_string_to_object**

I have the same problem, did you manage to solve it?

[nshmyrev]

@andreslavariega feels like you are using wrong libks, we have our own version with fixes https://github.com/alphacep/libks

[andreslavariega]

@andreslavariega feels like you are using wrong libks, we have our own version with fixes https://github.com/alphacep/libks

@nshmyrev Thanks for your prompt response. I tell you my steps.

I deleted libks and then installed libks from the indicated source code.

Use these commands, and previously install cmake 3.7.2.

cmake . -DCMAKE_INSTALL_PREFIX:PATH=/usr
make
cd /usr/src/libks/
cmake .
make
make install

Then I ran the test successfully.

root@voskFreeSwitch:/usr/src/libks# ctest .
Test project /usr/src/libks
Start 1: test pools
1/17 Test #1: testpools..................... Passed 0.02 sec
Start 2: testrealloc
2/17 Test #2: testrealloc .................. Passed 0.02 sec
Start 3: testacl
3/17 Test #3: testacl .................. Passed 0.02 sec
Start 4: testthreadpools

However, when I want to compile the freeswitch again, I get the error that it can't find libks. I think it's because I didn't install it in the correct folder, or maybe I should reference it at compile time.

checking for libks >= 1.8.2... configure: error: You need to either install libks

[nshmyrev]

You need to read details in configure.log, it should be clear why there is no libks. Check inside or attach it here.

[AnkitSavaliya007]

@nshmyrev I am trying to build mod_vost with freeswitch 1.10.7 but getting the following error when I try to load the module

[CRIT] switch_loadable_module.c:1750 Error Loading module /usr/local/freeswitch/mod/mod_vosk.so
**/usr/local/freeswitch/mod/mod_vosk.so: undefined symbol: __ks_json_add_string_to_object**

Link you libks library with mod_vosk module. It will work

[bhavikjenya]

@nshmyrev I am trying to build mod_vost with freeswitch 1.10.12 but getting the following error when I try to load the module.

2024-07-31 10:37:06.782778 99.33% [CRIT] switch_loadable_module.c:1754 Error Loading module /usr/local/freeswitch/mod/mod_vosk.so
**/usr/local/freeswitch/mod/mod_vosk.so: undefined symbol: __ks_json_add_string_to_object**

@AnkitSavaliya007 How to link correctly mod_vosk module with libks as got success on libks as well as mod_vosk installation.