How to extract streaming “now playing” data embedded in Icecast audio (radio) stream on Samsung Smart-TV

Question

I am creating a Samsung TV app for a radio station and they provide “Now Playing” information in the Icecast stream. Is it possible (and how do I) extract this information?

Answer 1

Shoutcast supports " Icy-MetaData strong>" - an additional field in the request header. When it is installed, its request to the cricket server embeds the metadata about the stream at periodic intervals (once every “ lexical-metal ” bytes) in the encoded audio stream itself. The icy-metaint value is determined by the shoutcast server configuration and is sent to the client as part of the initial response.

Send a message to Shoutcast’s Internet Broadcasting Protocol to learn more about Icy: metadata and sample code in C.

A somewhat technical discussion is also available at http://forums.radiotoolbox.com/viewtopic.php?t=74

Answer 2

Yes it is possible. Metadata is interleaved into stream data at a specified interval. Basically, you read 8192 bytes (or whatever is indicated in the Icy-MetaInt response Icy-MetaInt ), and then you read the metadata block.

The first byte of this metadata block tells you the length of the data. A length of 0 means no updated metadata.

Once you read the meta block, return to reading the stream data.

I have all this in more detail in my answer here: fooobar.com/questions/301373 / ... As long as I know that you are not writing PHP, the director is identical no matter what the language.

Answer 3

There is no way to get this meta from the main player.

Maybe you can use the jQuery.stream plugin to get the meta directly, but you need to configure Access-Control-Allow-Origin on you icecast server - but I have no idea if this will work.

The best solution here would be to use this script: http://code.google.com/p/icecast-now-playing-script/

So, you install this script on your web server, and from the SmartTV application you will AJAX it for a while while your stream is playing.

Answer 4

I just created a radio player for icecast and centova, it uses lastFM api to retrieve the metadata of the song. https://github.com/johndavedecano/Icecast-Centova-LastFM-API

Answer 5

If you do this for a radio station, then they can provide this data through the XSLT Icecast function. Some random old XSLT examples for providing stream metadata that I did at some point.

Another option is to run Icecast 2.4.1 or add two files (xml2json.xsl status-json.xsl) to the old version.

Please note that only Icecast 2.4.1 or later supports the addition of CORS / ACAO headers, which may be required to access data from a website / website.

If you do not directly cooperate with the radio station and cannot ask them to do this, do not pay attention to this answer. Someone might find this helpful though.