[mpg123-devel] [ mpg123-Feature Requests-3011695 ] Respond to SIGUSR1 and SIGUSR2

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Feature Requests item #3011695, was opened at 2010-06-05 04:38
Message generated for change (Comment added) made by sobukus
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Category: mpg123
Group: None
Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Todd Aiken (barcoboy)
Assigned to: Nobody/Anonymous (nobody)
Summary: Respond to SIGUSR1 and SIGUSR2

Initial Comment:
Would like to see the ability for mpg123 to be able to respond to signals.

Currently, you can pause and restart playback using "killall -SIGSTOP" mpg123 and "killall -SIGCONT mpg123", but it would be nice to, for example:

killall -SIGUSR1 mpg123   = fast forward
killall -SIGUSR2 mpg123   = rewind

There are maybe other unused signals that could be trapped and mapped to other functions (maybe user definable?).


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>Comment By: Thomas Orgis (sobukus)
Date: 2011-03-27 10:41

Message:
Hah, a separate request brought this one to the light again. In SVN trunk,
there's now code that interprets SIGUSR1 and SIGUSR2 when using the control
interface.

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Comment By: Todd Aiken (barcoboy)
Date: 2010-06-05 18:35

Message:
ACK, the --fifo command does exactly what I need it too.  Sorry, I was
unaware of its existence, and I had gone over the man page several times to
see if I missed anything.  Thanks for the information.

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Comment By: Thomas Orgis (sobukus)
Date: 2010-06-05 10:37

Message:
Well, this sounds like a remote control interface. Would you elaborate why
the existing remote control interface doesn't fit your application?
Especially when you specify a FIFO for command input:

shell$ mpg123 -R --fifo /tmp/mpg123-command

Then, on another shell...

shell$ echo load /some/file.mp3 > /tmp/mpg123-command
shell$ echo jump +10s > /tmp/mpg123-command
shell$ echo jump +10s > /tmp/mpg123-command
shell$ echo jump -10s > /tmp/mpg123-command

... to load/play a file and jump a bit around in it. Isn't this more
friendly than listening to some signals?
What one might argure is to add a "fast forward" mode to the control
interface to behave like mpg123 -C when you press "." or ":".

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