Re: [Alsa-user] Get triggered when the device opens

2018-06-04 Thread Frank Thomas via Alsa-user
On Mon, 2018-06-04 at 15:23 +0200, Clemens Ladisch via Alsa-user wrote: > Frank Thomas via Alsa-user wrote: > > The actual sound controller is connected via an I²S interface and > > synchronizes on its the word select signal. After the > > synchronisation, > > additional configuration must to

Re: [Alsa-user] Get triggered when the device opens

2018-06-04 Thread Clemens Ladisch via Alsa-user
Frank Thomas via Alsa-user wrote: > The actual sound controller is connected via an I²S interface and > synchronizes on its the word select signal. After the synchronisation, > additional configuration must to occur before you can get valid samples Then why don't you do the configuration in the

Re: [Alsa-user] Get triggered when the device opens

2018-06-04 Thread Frank Thomas via Alsa-user
I would like to further clarify some things. I actually need get triggered when the ALSA device started to run, meaning the device is producing or outputting samples. FYI: The actual sound controller is connected via an I²S interface and synchronizes on its the word select signal. After the

[Alsa-user] Get triggered when the device opens

2018-06-04 Thread Frank Thomas via Alsa-user
Hello, I'd like to apologise beforehand if I have not read enough documentation and/or source code to be posting here. Please do not hesitate to tell me to RTFM ☺ My application needs to get triggered when a mechanism any application is opening or closing a certain list of ALSA devices. It seems