Java draws WAV audio Waveforms

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Import java. AWT. graphics;
Import java. Io. file;
Import javax. Sound. sampled. audioformat;
Import javax. Sound. sampled. audioinputstream;
Import javax. Sound. sampled. audiosystem;
Import javax. Sound. sampled. dataline;
Import javax. Sound. sampled. sourcedataline;

Public class musicline extends javax. Swing. jframe implements runnable {

Private byte [] audiodata = NULL;
Private int intbytes = 0;
Private byte [] ML = new byte [1];
Private int [] drawl = NULL;
/** Creates new form musicline */
Public musicline (){
Initcomponents ();
Graphics g;
G = This. getgraphics ();
}
Public void paint (Graphics g)
{
G. clearrect (0, 0, 900,900 );
// System. Out. Print (drawl. Length );
If (audiodata! = NULL)
{
Drawl = new int [audiodata. Length];
For (INT I = 0; I <audiodata. length; I ++)
{
ML [0] = audiodata;
// String S = new string (ML );
Drawl = math. Abs (INT) ml [0]);
}
System. Out. println (drawl [0]);
For (INT I = 0; I <drawl. Length-1; I ++)
{
G. drawline (I * This. getwidth ()/256, drawl + 100, (I + 1) * This. getwidth ()/256, drawl [I + 1] + 100 );
}
}

}
Public void run ()
{
While (intbytes! =-1)
{
Try {
Synchronized (this ){
This. Wait (10 );
}
} Catch (interruptedexception ex ){
Ex. printstacktrace ();
}
Repaint ();
}
}
Public void play ()
{
Try {

Audioinputstream AIS = audiosystem. getaudioinputstream (new file (
"E:/a.wav"); // obtain the audio input stream
AIS = audiosystem. getaudioinputstream (audioformat. encoding. pcm_signed, AIS );
Audioformat baseformat = AIs. getformat (); // specifies the specific data arrangement in the audio stream
System. Out. println ("baseformat =" + baseformat );
Dataline. info = new dataline. Info (sourcedataline. Class,
Baseformat );
System. Out. println ("info =" + info );
Sourcedataline line = (sourcedataline) audiosystem. Getline (Info );
// Obtain the source data line from the mixer
System. Out. println ("line =" + line );
Line. Open (baseformat); // open the row with the specified format, so that the row can obtain all the required system resources and become operable.
Line. Start (); // allows data rows to execute data I/O
Int buffer_size = 256;

Audiodata = new byte [buffer_size];
While (intbytes! =-1 ){
Intbytes = AIs. Read (audiodata, 0, buffer_size); // read the specified maximum number of data bytes from the audio stream and put it into the given byte array.
If (intbytes> = 0 ){
Int outbytes = line. Write (audiodata, 0, intbytes); // This source data line writes audio data to the mixer.
}
}

} Catch (exception e ){
E. printstacktrace ();
}
}
/** This method is called from within the constructor
* Initialize the form.
* Warning: do not modify this Code. The content of this method is
* Always regenerated by the form editor.
*/
// <Editor-fold defaultstate = "Collapsed" DESC = "generated code">
Private void initcomponents (){

Setdefaclocloseoperation (javax. Swing. windowconstants. exit_on_close );
Javax. Swing. grouplayout layout = new javax. Swing. grouplayout (getcontentpane ());
Getcontentpane (). setlayout (layout );
Layout. sethorizontalgroup (
Layout. createparallelgroup (javax. Swing. grouplayout. Alignment. Leading)
. Addgap (0,400, short. max_value)
);
Layout. setverticalgroup (
Layout. createparallelgroup (javax. Swing. grouplayout. Alignment. Leading)
. Addgap (0,300, short. max_value)
);
Pack ();
} // </Editor-fold>

/**
* @ Param ARGs the command line arguments
*/
Public static void main (string ARGs []) {
Musicline MSL = new musicline ();
MSL. setvisible (true );
Thread YH = new thread (MSL );
YH. Start ();
MSL. Play ();

}

}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Import java. AWT .*;
Import javax. Swing .*;
 
Public class func extends jframe {
/**
* <Br> method Description: Main Method
* <Br> input parameters:
* <Br> return type:
*/
Public static void main (string [] ARGs ){
Func DB = new func ();
DB. Update ();
}
/**
* <Br> method Description: constructor, display form
* <Br> input parameters:
* <Br> return type:
*/
Func (){
Super ("function ");
Setdefaclocloseoperation (jframe. dispose_on_close );
Setsize (310,310 );
Show ();
}
/**
* <Br> method Description: update the screen
* <Br> input parameters:
* <Br> return type:
*/
Public void Update (){
Repaint ();
}
/**
* <Br> method Description: coordinate point conversion
* <Br> input parameters:
* <Br> return type:
*/
Double F (Double X ){
Return (math. Sin (2 * x) + math. Cos (3 * X ));
}
/**
* <Br> method Description: Draw a coordinate chart.
* <Br> input parameters:
* <Br> return type:
*/
Public void paint (Graphics g ){
Double x0, X1, y0, Y1, XD, YD;
Double max = 5.0;
Int W, H, HW, HH;
// Obtain the screen size
W = getsize (). width;
H = getsize (). height;
HW = W/2; HH = H/2;
// Output characters on the screen
G. drawstring ("sin [2x] + cos [3x]", 10, 40 );
G. setcolor (color. Red );
G. drawstring ("0", HW + 5, HH + 12 );
G. drawstring ("" + Max, hw-20, 40 );
G. drawstring ("" + Max, w-20, HH + 12 );
// Draw the X axis coordinates
G. drawline (0, HH, W, HH );
// Draw Y axis
G. drawline (HW, 0, HW, H );
XD = 2 * max/W; // calculate x increments
YD = HH/max; // calculate y increments
G. setcolor (color. Blue );
// Draw a small line in increments to form a curve graph.
For (INT x = 0; x <W-1; X ++ ){
X0 =-MAX + x * XD; Y0 = f (x0) * YD;
X1 = x0 + XD; Y1 = f (X1) * YD;
G. drawline (x, (INT) (hh-y0), x + 1, (INT) (hh-y1 ));
}
}
}