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[avi at avimarcus.net]

I'm trying to create a bookmark feature for long playbacks.

I'll save the file and position (to be exact the sample position) and then when the caller comes back, they can choose to restart in the same place.


The playback tool allows me to specify the sample position (and uuid_fileman lets me seek to one)


But I don't see how to query the _current_ position.
There's no status inside uuid_fileman
There's no variables I see that are updating when doing uuid_dump.


The closest I see is that if I stop the playback, I get a PLAYBACK_STOP event with the sample position.


This seems like it could work, but that's means I need to trigger a script to stop the playback (can't continue listening) and wait for an ESL event, and hope we're getting the right one. (How to I listen for events attached only to a specific UUID?) This seems overly complicated.


I was hoping to have a uuid_fileman option or the like to query the current position.


Does that exist somewhere? 


Thanks. 

[dragos at freeswitch.org]

We set these channel variables in switch_ivr_play_say.c : playback_last_offset_pos, playback_seconds, playback_ms, playback_samples. 



On Mon, Aug 23, 2021 at 5:53 PM Avi Marcus <avi@avimarcus.net (avi@avimarcus.net)> wrote:

[avi at avimarcus.net]

It looks like those variable are only updated upon PLAYBACK_STOP event, since the line before is:switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "done playing file %s\n", file);



Can we make a feature, e.g. with uuid_fileman to query that for a live playing file?


When I stop the file to get the position, it's destructive: I have to do a new playback to get back to my position, and to get all my key bindings, I need to transfer to an extension with them, and then I lose the position in the IVR.


Thanks.-Avi Marcus








On Mon, Aug 23, 2021 at 7:03 PM Dragos Oancea <dragos@freeswitch.org (dragos@freeswitch.org)> wrote:

[dragos at freeswitch.org]

how are you playing the file ?I gave this a try, I used "playback" in dialplan, then I used uuid_fileman from CLI with cmd "stop". And I get the chan vars:
variable_playback_seconds: 12
variable_playback_ms: 12288
variable_playback_samples: 98304



Yes, they are meant to work on "stop" . You get the values when it's stopped and then you seek to position.
You can seek with "playback":
<action application="playback" data="<sound-file-to-play>[@@<seek-offset>]"/>

You can use inline dialplan too I think.


If you believe it's a bug, file a github issue.
Perhaps this feature for uuid_fileman would be useful too, so you could file it as a feature request. 




On Wed, Aug 25, 2021 at 11:39 AM Avi Marcus <avi@avimarcus.net (avi@avimarcus.net)> wrote:

[avi at avimarcus.net]

I don't think it's a bug, just something that would be nice if it worked differently. I file a feature request:

https://github.com/signalwire/freeswitch/issues/1316



While writing that, I see I could write the entire playback control in javascript, which might mean I don't lose my IVR position. I'd still have to deal with stopping/restarting the playback.