This assumes that you are running the Wheezy Beta RPI distro or later (audio is fixed in Wheezy)
1) log into console: /etc/init.d/ssh start so you can login from the pc :)
2) Install webmin (wget http://prdownloads.sourceforge.net/webadmin/webmin-1.590.tar.gz) tar xvzf filename cd webmin_folder ./setup.sh
3) Set SSH to auto start at bootup in Webmin
4) install PHP (apt-get install php5) this will also install apache
5) install mpg123 (apt-get install mpg123)
6) Create a user that will auto login (adduser radio)
7) set the hostname (hostname RadioPI)
8) Create the web pages that will be used to change radio stations
/var/www/stationCommon.php
*********************************
<?php
// Created 7/7/2012 by Gregg Buntin - http://pentiumprime.realmlabs.com/
$file = fopen("stationList","r");
while(!feof($file))
{
$string = fgets($file);
$tempArray = explode("~",$string);
$radioList[] = $tempArray;
}
fclose($file);
$currentStation = trim(file_get_contents("station"));
?>
*********************************
/var/www/index.php
*********************************
<?php
// Created 7/7/2012 by Gregg Buntin - http://pentiumprime.realmlabs.com/
include("stationCommon.php");
?>
<html>
<head>
<link href="station.css" rel="stylesheet" type="text/css">
</head>
<body bgcolor="#669">
<center>
<h2 style="color: #0f0;"><?=file_get_contents("/etc/hostname");?></h2>
<table>
<tr>
<?php
$colCount = 0;
foreach ($radioList as $key => $stationData)
{
if (trim($stationData[0]) > "")
{
$stationName = trim($stationData[0]);
$stationUrl = trim($stationData[1]);
if ($stationUrl > "")
{
$buttonClass = "button";
if ($currentStation == $stationUrl)
{
$buttonClass .= " save";
$currentName = $stationName;
} // if currentStation
else
{
$buttonClass .= " play";
}
$colCount++;
if ($colCount == 3) print "</tr>\r\n<tr>\r\n";
print "<td><button id='$stationName' onclick=\"doRadio('$stationUrl','$stationName');\" class=\"$buttonClass\">$stationName</button></td>\r\n";
} // if stationUrl
} // if stationData[0]
} // foreach
?>
</tr>
</table>
</center>
<iframe id="radioFrame" style="height: 0px; width: 0px; visibility: hidden;"></iframe>
<script>
var lastStation = '<?=$currentName;?>';
var theFrame = document.getElementById('radioFrame');
function doRadio(inUrl, inName)
{
if (lastStation > '')
{
lastButton = document.getElementById(lastStation);
lastButton.innerText = lastStation;
lastButton.className = "button play";
}
if (inName > '')
{
newButton = document.getElementById(inName);
newButton.innerText = inName;
newButton.className = "button save";
theFrame.src = "doRadioScript.php?inUrl="+inUrl;
lastStation = inName;
}
}
</script>
</body>
</html>
*********************************
/var/www/station.css
*********************************
# CSS from this site: http://www.red-team-design.com/just-another-awesome-css3-buttons
.button
{
display: inline-block;
white-space: nowrap;
background-color: #9cf;
background-image: -webkit-gradient(linear, left top, left bottom, from(#eee), to(#9cf));
background-image: -webkit-linear-gradient(top, #eee, #9cf);
background-image: -moz-linear-gradient(top, #eee, #9cf);
background-image: -ms-linear-gradient(top, #eee, #9cf);
background-image: -o-linear-gradient(top, #eee, #9cf);
background-image: linear-gradient(top, #eee, #9cf);
filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#eeeeee', EndColorStr='#99ccff');
border: 1px solid #777;
padding: 0 1.5em;
margin: 0.5em;
font: bold 2em/3em Arial, Helvetica;
text-decoration: none;
color: #333;
text-shadow: 0 1px 0 rgba(255,255,255,.8);
-moz-border-radius: .2em;
-webkit-border-radius: .2em;
border-radius: .2em;
-moz-box-shadow: 0 0 1px 1px rgba(255,255,255,.8) inset, 0 1px 0 rgba(0,0,0,.3);
-webkit-box-shadow: 0 0 1px 1px rgba(255,255,255,.8) inset, 0 1px 0 rgba(0,0,0,.3);
box-shadow: 0 0 1px 1px rgba(255,255,255,.8) inset, 0 1px 0 rgba(0,0,0,.3);
}
.button:hover
{
background-color: #cfc;
background-image: -webkit-gradient(linear, left top, left bottom, from(#fafafa), to(#cfc));
background-image: -webkit-linear-gradient(top, #fafafa, #cfc);
background-image: -moz-linear-gradient(top, #fafafa, #cfc);
background-image: -ms-linear-gradient(top, #fafafa, #cfc);
background-image: -o-linear-gradient(top, #fafafa, #cfc);
background-image: linear-gradient(top, #fafafa, #cfc);
filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#fafafa', EndColorStr='#cfc');
}
.button:active
{
-moz-box-shadow: 0 0 4px 2px rgba(0,0,0,.3) inset;
-webkit-box-shadow: 0 0 4px 2px rgba(0,0,0,.3) inset;
box-shadow: 0 0 4px 2px rgba(0,0,0,.3) inset;
position: relative;
top: 1px;
}
.button:focus
{
outline: 0;
background: #fafafa;
}
.button:before
{
background: #9cf;
background: rgba(0,0,0,.1);
float: left;
width: 1em;
text-align: center;
font-size: 1.5em;
margin: 0 1em 0 -1em;
padding: 0 .2em;
-moz-box-shadow: 1px 0 0 rgba(0,0,0,.5), 2px 0 0 rgba(255,255,255,.5);
-webkit-box-shadow: 1px 0 0 rgba(0,0,0,.5), 2px 0 0 rgba(255,255,255,.5);
box-shadow: 1px 0 0 rgba(0,0,0,.5), 2px 0 0 rgba(255,255,255,.5);
-moz-border-radius: .15em 0 0 .15em;
-webkit-border-radius: .15em 0 0 .15em;
border-radius: .15em 0 0 .15em;
pointer-events: none;
}
/* Hexadecimal entities for the icons */
.save:before
{
content: "\2714";
}
.play:before
{
content: "\25B6";
}
*********************************
/var/www/doRadioScript.php
*********************************
<?php
// Created 7/7/2012 by Gregg Buntin - http://pentiumprime.realmlabs.com/
include "stationCommon.php";
$inUrl = trim($_GET["inUrl"]);
// Check to make sure the passed in URL is in our list of valid radio stations
$DoIt = false;
foreach ($radioList as $key => $stationData)
{
if (trim($stationData[0]) > "")
{
$stationUrl = trim($stationData[1]);
if ($stationUrl > "")
{
if ($inUrl == $stationUrl)
{
$DoIt = true;
} // if inUrl
} // if stationUrl
} // if stationData[0]
} // foreach
// Passed in Url is in our List so write it out and restart mpg123
if ($DoIt)
{
$file = fopen("/var/www/station","w");
fwrite($file,$inUrl);
fclose($file);
echo shell_exec("/usr/bin/doradio > /dev/null 2>/dev/null &");
}
?>
*********************************
/var/www/stationlist
*********************************
Antioch ~ http://lin2.ash.fast-serv.com:9022/listen.pls
WTMJ ~ http://1942.live.streamtheworld.com:3690/WTMJAM_SC
*********************************
/var/www/station (be sure to chmod 777 this file)
*********************************
http://lin2.ash.fast-serv.com:9022/listen.pls
*********************************
9) create the script to change the radio station based on their selections:
/usr/bin/doradio (be sure to chmod 755 this file)
*********************************
# Created 7/7/2012 by Gregg Buntin - http://pentiumprime.realmlabs.com/
sudo -uradio killall mpg123
sudo -uradio /usr/bin/mpg123 -@ `cat /var/www/station` &
*********************************
10) Setup for the Auto Login (vi /etc/inittab)
find this line and comment it out: 1:2345:respawn:/sbin/getty 115200 tty1
below it add this line: 1:2345:respawn:/bin/login -f radio tty1 </dev/tty1 >/dev/tty1 2>&1
save it
11) set the user to start the radio on login
vi /home/radio/.bash_profile and add the following line
/usr/bin/doradio
save it
12) setup www-data so it can sudo to the radio user
vi /etc/sudoers and add the following lines:
radio ALL=(radio)NOPASSWD:/usr/bin/doradio,/usr/bin/mpg123 *,/usr/bin/killall mpg123
www-data ALL=(radio)NOPASSWD:/usr/bin/doradio,/usr/bin/mpg123 *,/usr/bin/killall mpg123
save it
13) REBOOT and you are done!
Sunday, July 8, 2012
Radio PI
I decided to go ahead and release my Radio PI setup. Steps 2 & 3 are completely optional and not needed for playing internet radio at all, I just like having Webmin on all of my Linux Boxes.
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