More than you wanted to know about the Internet Radio Player

FreePlay · Post by **FreePlay** » Sat Jan 19, 2008 7:54 pm

I've spent quite a bit of time fiddling with the Internet Radio Player plugin Sony added in firmware 3.80, as it offers many interesting new possibilities, such as a pseudo-XMLHttpRequest capability and directory scanning functions built into the web browser. It also appears to be the first public acknowledgement of the screenshot plugin, since there's a function (albeit a placeholder for the moment) with a name that implies that it's solely meant to be used for taking screenshots.

As part of the process I've been gradually documenting the various functions that we've been given with this plugin; a chart of everything I've discovered is available here in glorious, eye-burning color.

Last but not least, when you first set up the radio player, you'll download a .PRS file which contains information about the radio player you're using -things like the title, URL, author, copyright info, icon, etc. I reverse-engineered the .PRS format for kicks and wrote a tool for displaying information about .PRS files and spitting out the associated icon. Source/binaries for the tool are located here.

I know most people don't get excited about web portals, but there's a lot of power tucked away in the radio player plugin if you know how to properly flex its muscles.

Wally · Post by **Wally** » Sat Jan 19, 2008 7:57 pm

*pats freeplay* Good boy :)

Hellcat · Post by **Hellcat** » Sat Jan 19, 2008 8:08 pm

Nice!

How did you get the function name? Bruteforcing NIDs?
How would one call all the functions? From a custom radioplayer .PRS?

FreePlay · Post by **FreePlay** » Sat Jan 19, 2008 8:20 pm

The function names are javascript; they're referenced as plain text in the radioshack.prx :)

You'd call them from a custom .PRS, yes. You edit your .PRS to point to whatever file you want, then add this in your html code:

Code: Select all

<object name="psp" id="psp" type="application/x-psp-extplugin"></object>

Then you can script the 'psp' object however you want, using the functions I listed, e.g. 'psp.sysRadioPlayEffectSound()'. The functions are only available if you use the 'Internet Radio Player' icon in the XMB, though; the radioshack plugin isn't loaded otherwise.

Maybe this weekend I'll write a tool for making custom .PRS files based on plain text input. That'd be nice, I think.

Hellcat · Post by **Hellcat** » Sun Jan 20, 2008 2:20 am

I get the feeling that radio thingy will get a very nice "toy" to play with :D

Not bad! :up:

FreePlay · Post by **FreePlay** » Sun Jan 20, 2008 3:22 am

Here is what I know about the PRS format so far.

FreePlay · Post by **FreePlay** » Sun Jan 20, 2008 7:14 am

Fixed :)

I've made a program that lets you make and edit .PRS files. Enjoy.

Team-3GO · Post by **Team-3GO** » Sun Jan 20, 2008 10:22 am

thanks for sharing the infos freeplay.
played around with the radio stuff for two days while i had sony 3.80.
now since there is 3.80 M33 its time to look at it again.

zefie · Post by **zefie** » Tue Feb 12, 2008 1:35 pm

Thanks for the great player, FreePlay.

Here is my modification of your player code to enable metadata:

http://psp.zefie.com/radiotest.html
http://psp.zefie.com/zefie.prs

Edit: Screenshot

Javascript file:
http://psp.zefie.com/js/radioplayer.js

updateStreamTitle() is a modified version of one of Sony's javascript routines.