i am not positive about this, but you could try making
the amp process a background process by adding a
" &" to the end of the command line
(at least if you're using *nix)
> -----Original Message-----
> From: Ashley M. Kirchner [mailto:[EMAIL PROTECTED]]
> Sent: Monday, February 19, 2001 00:40
> To: PHP-General List
> Subject: [PHP] system()
>
>
>
> While doing a test run on an idea I have, I tried running the
> system() command on an audio application:
>
> <? system('amp -p song_one.mp3') ?>
>
> ...and found out that it works when I load the file up in a browser
> - I get sound coming out from the physical web server's audio port.
> Don't worry, this was the expected behavior, and also what I wanted to
> happen. However, as the manual page says, system() will hang till the
> command is done running.
>
> I can hit the browser's Stop button, however the actual application
> is still running - and won't stop till the file is done playing I assume
> (or will it quit based on the webserver's time out value?) I suppose I
> can create a button on the same page that executes something like
> system('killall -KILL amp'); and be done with it. Haven't tried that
> yet.
>
> But, if I'm still crazy tomorrow and plan on continuing with this
> project, how should this be done properly? Obviously, 'holding' the
> browser while the program runs isn't the right way to do it. And I need
> a way to stop the audio somehow.
>
> The actual project looks something like this:
>
> The server has a few directories filled with mp3 files. I'd like to
> build a script that would dive into one of those directories (depending
> on the user selection), and present a list of all the songs, with a
> check box. The user can then select the ones s/he would like to hear
> and click a Play button and enjoy. The amount of selections can be
> anything, from one song, to all (should they want to sit there for 15
> hours).
>
> However, when they click Play, I want the same page to be reloaded
> again, with nothing selected, and their (previous) selection to start
> playing in the background. If they want to change their selection, they
> can go ahead and pick other songs, and click Play again - THIS is where
> the previous instance of the 'amp' program should be killed, and a new
> one started, with the new play list queued. And of course, it should
> also have a Stop button on the page somewhere.
>
> A few notes on the amp program (for those that don't know it): I
> _CAN_ run several instances of it, and they will all output audio
> simultaneously through the port (unlike Windows which will tell you the
> audio device is busy). So, if I start it once with song_one.mp3
> playing, and a second time with song_two.mp3 playing, you will hear both
> songs at the same time. (for that matter, I can run some 6 or 7
> instances of the thing before the CPU starts to hiccup). It also
> doesn't exit till the file is done playing (I believe all players do
> this).
>
> I'm not asking for someone to actually build this for me, no. But I
> would be very grateful for some pointers, what can I do, and what I
> should not do, and what to avoid all together. It's something for my
> household to use, so they can listen to music through a simple
> interface, as opposed to having to log into the server and figuring out
> how/what to do through the shell, or X-Win interface.
>
> Am I crazy?
>
> --
> H | Hi, I'm currently out of my mind. Please leave a message. BEEEEP!
> |____________________________________________________________________
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Ashley M. Kirchner <mailto:[EMAIL PROTECTED]> . 303.442.6410 x130
> Director of Internet Operations / SysAdmin . 800.441.3873 x130
> Photo Craft Laboratories, Inc. . eFax 248.671.0909
> http://www.pcraft.com . 3550 Arapahoe Ave, #6
> .................. . . . . Boulder, CO 80303, U.S.A.
>
>
>
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