how to play two or more audio files in J2me

[A.Saleh]

i m developing a J2me S60 app, which can play multiple audio files.i tried this code but problem is ,it takes delay after playing one file i.e to start the next one. can anyone tell me how to play these files (one after another) using MMAPI.

public class AudioPlayer implements javax.microedition.media.PlayerListener{

Player player;
int count=0;

public void playMedia(){

try{

player = Manager.createPlayer(getClass().getResourceAsStream(audioFiles[count]),"audio/x-amr");
player.addPlayerListener(this);
player.start();

}
catch (Exception e) {
return ;
}
}


public void playerUpdate(Player p,String event,Object eventData) {

if (event==PlayerListener.END_OF_MEDIA)
{
try{
if(++count == audioFiles.length)
p.stop();
else {
player = Manager.createPlayer(getClass().getResourceAsStream(audioFiles[count]]),"audio/x-amr" );
player.addPlayerListener(this);
player.start();
}
}
catch (Exception e) {
return;
}
}
}

}

also i was thinking about another option to reduce the delay, that is to merge the N number of files and create a new one...but i havn't tried this bcz didnt get any clue on how to merge files....any anyone has experienced this...plz help...its realy urgent

Thanx

[r2j7]

Hello A.Saleh,

as possible solution to your issue, you might want to check these topics related to audio mixing available on Forum Nokia Java Developer's Library:

Java Developer's Library 3.5 > Developer's Guides > Multimedia > Creating multimedia applications > Using the Mobile Media API> Playing sampled sound and MIDI

Java Developer's Library 3.5 > Implementation notes > (JSR 135) Mobile Media API > Series 40 Class and interface description> Audio mixing

Java Developer's Library 3.5 > Implementation notes > (JSR 135) Mobile Media API > Symbian Class and interface support > Player > Audio mixing

Java Developer's Library 3.5 > Implementation notes > (JSR 135) Mobile Media API > Series 40 Class and interface description > Swap and Play

Regards,
r2j7

[A.Saleh]

how about this aproach ...it has reduced the delay.

public class AudioPlayer implements javax.microedition.media.PlayerListener{


private Player player;

public playMedia(String[] audiofile){

int adflen = audiofile.length;

InputStream is;

try{

byte[][] bfiles = new byte[adflen][];
byte[] temp = new byte[800];// all files in audiofile are approx of 800bytes
int totalbytes = 0; int numread = 0; int strmlen = 0;

for(int k=0; k<adflen; k++)
{
numread =0; totalbytes = 0;

is = this.getClass().getResourceAsStream(audiofile[k]);

while(numread >= 0)
{
totalbytes+=numread;
numread = is.read(temp);
}

bfiles[k] = new byte[totalbytes];
strmlen+=totalbytes;
is.close();

for(int cnt=0; cnt<totalbytes; cnt++)
bfiles[k][cnt] = temp[cnt];
}


byte[] stream = new byte[strmlen];
int pos =0;

for(int out=0; out<adflen; out++)
for(int in=0; in<bfiles[out].length; in++)
stream[pos++] = bfiles[out][in];

ByteArrayInputStream bais = new ByteArrayInputStream( stream );

player = Manager.createPlayer(bais,"audio/x-amr");
player.addPlayerListener(this);
player.realize();
player.prefetch();
player.start();
}

catch (Exception e) {
System.out.println(e.toString());
}
}


public void playerUpdate(Player p,String event,Object eventData) {

if (event == PlayerListener.END_OF_MEDIA)
{
try {
p.deallocate();
p.close();
}
catch(Exception e){
p.deallocate();
p.close();
return;
}

}
}

need advice!
Thanx