[asterisk-users] using Playback() to play a random sound file

[dave cantera]

steve,
thats Great... my C is old and ftw operated differently on sysV, 
solaris, sunos, ultrix, and osf...  so I went back to bourne...  
couldn't work through the idiosyncracies of gnu autoconf, etc...  
although I have a many reasons to, I just couldn't get to production 'C' 
coding level...
daveC

Steve Edwards wrote:
>>> Steve Edwards wrote:
>>> On Tue, 1 May 2007, Jay Austad wrote:
>>>
>>>> I've got a directory under /var/lib/asterisk/sounds which contains 
>>>> a bunch
>>>> of sound files.  I would like to call the Playback command to play the
>>>> files, but I need it to select a file to play randomly.  Is there 
>>>> any way
>>>> to do this?
>>>
>>> I do this with an AGI.
>
> On Wed, 2 May 2007, dave cantera wrote:
>
>> here is a way that I solved a similar problem...  have a shell script 
>> that
>> runs and indexes all the files in the directory into an ascii flat 
>> file with
>> a format of
>> #### filename
>> 0001 directory/tt-weasels
>> 0002 directory/tt-monkeys
>>
>> in your dialplan use the rand() to pick a number, pass it to the 
>> shell script
>> as an arg[], then the shells script grep()'s and cut()'s the filename 
>> puts it
>> in a db varaible, the dialplan picks it up and plays it...  as you 
>> can see, I
>> haven't done it yet :) but, in theory it works...  you could skip the
>> dialplan rand() and just use linux rand based on the minutes or 
>> seconds value
>> for current time...
>>
>> you don't have to zero fill the index either, I seem to like nicely 
>> formated
>> files, they are easier for humans to read.
>> daveC
>
> Sounds like a lot of effort to avoid writing an AGI. If you have the 
> skills to write the script described above, you have the skills to 
> write an AGI -- you can write AGI's in shell scripts, btw.
>
> AGI's accept stuff from Asterisk on stdin and send stuff back to 
> Asterisk on stdout -- very simple and elegant actually. Take your 
> script and rewrite the "reading arguments" bits to read from stdin and 
> change the "write db" bits to write to stdout (set a channel variable) 
> and you have an AGI and a much cleaner dialplan.
>
> I write AGI's in C for speed and flexibility. No interpreter (bash, 
> perl, php, etc.) to fire up, full access to anything you want to do.
>
> In C, I call ftw() ("ftw - traverse (walk) a file tree"). If I get 
> more than 1 file, I choose one randomly.
>
> Thanks in advance,
> ------------------------------------------------------------------------
> Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867 PST
> Newline                                             Fax: +1-760-731-3000
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