[pulseaudio-discuss] pa_context_set_source_volume_by_index() failed

pfl pfl at messofts.be
Sat Oct 29 10:50:08 UTC 2016


I realised I could not connect to the server running my program as root 
(sudo)

PA_CONTEXT_CONNECTING
(and stops there, pa_context_connect does not return at all)

is there any user permission involved with pulse audio ?



Le 28/10/2016 à 21:02, Tanu Kaskinen a écrit :
> On Fri, 2016-10-28 at 19:58 +0200, pfl wrote:
>> I tried to implement it but I cant connect anymore
>>
>> "context_state_callback" is called only once with the state
>> PA_CONTEXT_CONNECTING and is never called back
>>
>> I tried using pa_threaded_mainloop_lock(mainloop); and
>> pa_threaded_mainloop_unlock(mainloop); around my waiting loop but it
>> does not work either
>>
>> Audio::Audio()
>> {
>>       mainloop=pa_threaded_mainloop_new();
>>       api = pa_threaded_mainloop_get_api(mainloop);
>>
>>       pa_proplist *proplist = pa_proplist_new();
>>       pa_proplist_sets(proplist, PA_PROP_APPLICATION_NAME, "PulseAudio
>> Volume Control");
>>       pa_proplist_sets(proplist, PA_PROP_APPLICATION_ID,
>> "org.PulseAudio.pavucontrol");
>>       pa_proplist_sets(proplist, PA_PROP_APPLICATION_ICON_NAME,
>> "audio-card");
>>       pa_proplist_sets(proplist, PA_PROP_APPLICATION_VERSION, "1.0");
>>
>>       context = pa_context_new_with_proplist(api, NULL, proplist);
>>       pa_proplist_free(proplist);
>>
>>       pa_context_set_state_callback(context, context_state_callback, NULL);
>>
>>       pa_context_connect(context, NULL, PA_CONTEXT_NOFAIL, NULL);
>>
>>       pa_threaded_mainloop_start(mainloop);
>>
>>       do
>>       {
>>       }
>>       while(toTreat!=0);
>>
>> }
> This code looks like it should work. Does pa_context_connect() return
> an error? What if you don't use PA_CONTEXT_NOFAIL?
>


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