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Minim |
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AudioPlayer Fields Methods
addListener ( ) |
An AudioPlayer provides a self-contained way of playing a
sound file by streaming it from disk (or the internet). It
provides methods for playing and looping the file, as well
as methods for setting the position in the file and
looping a section of the file. You can obtain an
AudioPlayer by using the loadFile method of the Minim
class.
Constructors Related MinimExample /**
* This sketch demonstrates how to play a file with Minim using an AudioPlayer. <br />
* It's also a good example of how to draw the waveform of the audio. Full documentation
* for AudioPlayer can be found at http://code.compartmental.net/minim/audioplayer_class_audioplayer.html
* <p>
* For more information about Minim and additional features,
* visit http://code.compartmental.net/minim/
*/
import ddf.minim.*;
Minim minim;
AudioPlayer player;
void setup()
{
size(512, 200, P3D);
// we pass this to Minim so that it can load files from the data directory
minim = new Minim(this);
// loadFile will look in all the same places as loadImage does.
// this means you can find files that are in the data folder and the
// sketch folder. you can also pass an absolute path, or a URL.
player = minim.loadFile("groove.mp3");
}
void draw()
{
background(0);
stroke(255);
// draw the waveforms
// the values returned by left.get() and right.get() will be between -1 and 1,
// so we need to scale them up to see the waveform
// note that if the file is MONO, left.get() and right.get() will return the same value
for(int i = 0; i < player.bufferSize() - 1; i++)
{
float x1 = map( i, 0, player.bufferSize(), 0, width );
float x2 = map( i+1, 0, player.bufferSize(), 0, width );
line( x1, 50 + player.left.get(i)*50, x2, 50 + player.left.get(i+1)*50 );
line( x1, 150 + player.right.get(i)*50, x2, 150 + player.right.get(i+1)*50 );
}
// draw a line to show where in the song playback is currently located
float posx = map(player.position(), 0, player.length(), 0, width);
stroke(0,200,0);
line(posx, 0, posx, height);
if ( player.isPlaying() )
{
text("Press any key to pause playback.", 10, 20 );
}
else
{
text("Press any key to start playback.", 10, 20 );
}
}
void keyPressed()
{
if ( player.isPlaying() )
{
player.pause();
}
// if the player is at the end of the file,
// we have to rewind it before telling it to play again
else if ( player.position() == player.length() )
{
player.rewind();
player.play();
}
else
{
player.play();
}
}
Usage Web & Application |