DZone Snippets: music code

Play audio with a Ruby shell script

jrobertson (James Robertson) — Wed, 09 Jul 2008 19:15:45 GMT

Play an ogg file from the command-line using the program ogg123 from the software package 'vorbis-tools'.



#!/usr/bin/ruby



#file: ogg-play.rb



`ogg123 #{ARGV[0]} > /dev/null 2>&1`

e.g.



wget http://upload.wikimedia.org/wikipedia/en/4/4d/Elo_blue_sky.ogg

./ogg-play.rb Elo_blue_sky.ogg

Flac to mp3

scvalex (Alexandru Scvortov) — Tue, 02 Oct 2007 18:02:03 GMT

Converts all *.flac files in the current dir to mp3.



#!/bin/bash



for file in *.flac

do

	echo Converting $file

	flac123 -q --wav=- "$file" | lame - "$file".mp3

done

Last.fm favorite artists for social network

nertzy (Grant Hutchins) — Mon, 11 Dec 2006 10:46:42 GMT

// Returns a list of your top 50 favorite artists from last.fm, suitable for pasting into a Facebook, Myspace, or similar profile



#!/usr/bin/env ruby

require 'net/http'

require 'csv'

user = 'nertzy'

csv = Net::HTTP.get 'ws.audioscrobbler.com', "/1.0/user/#{user}/topartists.txt"

puts CSV::Reader.parse(csv).collect{ |row| row[2] }.join(", ")

Java - Example Very Simple Player (JMF)

whitetiger () — Fri, 27 Oct 2006 15:53:37 GMT

// Main Class



package org.jmf.example;



import javax.swing.JDialog;

import javax.swing.JFrame;

import javax.swing.UIManager;

import javax.swing.UnsupportedLookAndFeelException;

import javax.swing.plaf.metal.MetalLookAndFeel;



public class ExampleJMF

{

	public static void main(String[] args)

	{

		JFrame.setDefaultLookAndFeelDecorated(true); 

		JDialog.setDefaultLookAndFeelDecorated(true);

		

		try

		{

			UIManager.setLookAndFeel(new MetalLookAndFeel());

		}

		catch(UnsupportedLookAndFeelException e)

		{

			e.printStackTrace();

		}

		

		new exampleFrame();

	}

}

// Frame Class



package org.jmf.example;



import java.awt.Toolkit;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;



import javax.swing.JFrame;



public class exampleFrame extends JFrame

{

	private static final long serialVersionUID = 1L;

	

	public exampleFrame()

	{

		super("JMF - Example...");

		

		setSize(400, 300);

		setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - getWidth())/2, (Toolkit.getDefaultToolkit().getScreenSize().height - getHeight())/2);

		

		addWindowListener(new WindowAdapter()

		{

			public void windowClosing(WindowEvent evt)

			{

				System.exit(0);

			}

		});

		

		setContentPane(new examplePanel());

		setVisible(true);

	}

}

// Panel Class



package org.jmf.example;



import java.awt.Component;

import java.awt.Graphics;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.IOException;

import java.net.MalformedURLException;

import java.net.URL;



import javax.media.ControllerEvent;

import javax.media.ControllerListener;

import javax.media.Manager;

import javax.media.NoPlayerException;

import javax.media.Player;

import javax.media.RealizeCompleteEvent;

import javax.swing.JPanel;



public class examplePanel extends JPanel implements ActionListener, ControllerListener

{

	private static final long serialVersionUID = 1L;

	

	private Component visualComponent;

	private Player player;

	

	public examplePanel()

	{

		try

		{

			player = Manager.createPlayer(new URL("file:///tmp/a.mpg"));

			player.addControllerListener(this);

			

			player.start();

		}

		catch(NoPlayerException e)

		{

			e.printStackTrace();

		}

		catch(MalformedURLException e)

		{

			e.printStackTrace();

		}

		catch(IOException e)

		{

			e.printStackTrace();

		}

	}

	

	public void paintComponent(Graphics g)

	{

		super.paintComponent(g);

	}



	public void actionPerformed(ActionEvent e)

	{



	}



	public void controllerUpdate(ControllerEvent c)

	{

		if(player == null)

			return;

		

		if(c instanceof RealizeCompleteEvent)

		{

			if((visualComponent = player.getVisualComponent()) != null)

				add(visualComponent);

		}

	}

}

PHP last.fm chart creator

Alkine (Jurgen Strydom) — Wed, 27 Sep 2006 22:52:34 GMT

This code displays the Top 50 artists XML feed from last.fm in a nice presentable way on your website. Can easily be modified to work with any other feed from last.fm, find the full guide at http://www.strydominc.za.net/index.php?p=projectdetail&d=phplastfmchart



/**********************************************************************************************

www.strydominc.za.net

Created by Jurgen Strydom, 19-08-2006, jurgen.strydom@gmail.com

Read the readme.txt

Version 1.01, 05-09-2006

**********************************************************************************************/

?>





//User settings -> needs your attention

$user = "Alkine"; //Your username

$width = 700; //width of the list



//Code you should not worry about

$file = "http://ws.audioscrobbler.com/1.0/user/$user/topartists.xml";

$xml = simplexml_load_file("$file");

$big = $xml->artist[0]->playcount;

$total = count($xml->artist);

$factor =  $width /$big;

?>


 for ($k=0 ; $k<=$total - 1; $k++) {

 	$barlen = round(($xml->artist[$k]->playcount * $factor), 0);

 ?>




  }

  ?>

  
   
    






      
      
        		if ($barlen >= (($width + 100) /2)) {

			echo "", $xml->artist[$k]->playcount, " - ", $xml->artist[$k]->name ,"";

		}

		if (($barlen < (($width + 100) /2)) && ($barlen >= ($width / 3))) {

			echo "", $xml->artist[$k]->playcount ," -";

		}

		if ($barlen < ($width / 3)) {

			echo " ";

		}		

		?>
        		if ($barlen >= (($width + 100) /2)) {

			echo " ";

		}

		if (($barlen < (($width + 100) /2)) && ($barlen >= ($width / 3))) {

			echo " ", $xml->artist[$k]->name ,"";

		}

		if ($barlen < ($width / 3)) {

			echo "", $xml->artist[$k]->playcount, " - ", $xml->artist[$k]->name ,"";

		}		

		?>
      
    
  
  



/**********************************************************************************************

Changelog:



Version 1.01

Fixed a bug that caused the bar sizes to display incorrectly.



Version 1

First release.

**********************************************************************************************/

?>

Generate and play midi on mobile phone

korakot (Korakot Chaovavanich) — Wed, 10 Aug 2005 00:37:27 GMT

From a previous snippet, you can play any sound file
(including midi) with pys60.
http://bigbold.com/snippets/posts/show/400

Now, what if you can generate a midi file as well?
I found a pure python midi file library.
http://www.mxm.dk/products/public/pythonmidi

I modify it a bit, just to make a single file for easy download.
http://larndham.net/service/pys60/smidi.py
With it, you can play a single note with the following code.



>>> import smidi

>>> m = smidi.MidiOutFile('C:\\out.mid')

>>> m.header()

>>> m.start_of_track()

>>> m.update_time(0)

>>> m.note_on(note=0x40)  # single note

>>> m.update_time(192)

>>> m.note_off(note=0x40) # stop it after 192

>>> m.update_time(0)

>>> m.end_of_track()

>>> m.eof()



>>> from audio import Sound

>>> s = Sound.open('C:\\out.mid')

>>> s.play()

>>> s.close()

These 10 lines can be made into a simple function.
Then, you can just type a line and play any note you like
on you mobile phone.



>>> from smidi import play

>>> play([(64,192), (32, 192)])

Ah... so pythonic. ^_^

Playing sound

korakot (Korakot Chaovavanich) — Sun, 19 Jun 2005 23:12:00 GMT

py_s60 1.1.3 provides audio module which allow you to
play sound. This should let people write some fun games.

Here's a quick example.



from audio import *

f = 'C:\\Nokia\\Sounds\\Digital\\28050.amr'

s = Sound.open(f)

s.play()

I have tried calling Sound.open(f).play() directly, but
it doesn't seem to work. I may be waiting for file loading
or wait for some callback. I don't know.

You can play it many times or repeat forever



s.play(3) # 3 times

s.play(KMdaRepeatForever) # or just use -2

s.stop() # Ok, enough of it