[kamanashisroy]

Hi,

I am new in J2me. I am interested in the advanced features in my s60 mobile(model 3230). I am trying to capture audio in amr encoding. I read the related topics and wrote the following method.

Player recorder;

.... ....
.... ....

public void setUpMedia() {
debug("SDPIntegrator:setUpSend(): >>>> Capture device setup >>>> ");
try {
if (recorder == null || recorder.getState() == Player.CLOSED) {
// Create new instance of recorder
recorder = javax.microedition.media.Manager
.createPlayer("capture://audio?encoding=amr");
debug("SDPIntegrator:setUpSend():Recorder created");
} else {
// Reuse the recorder
recorder.deallocate();
debug("SDPIntegrator:setUpSend():Recorder deallocated");
}
recorder.realize();
debug("SDPIntegrator:setUpSend():Recorder realized");
RecordControl rc = (RecordControl) recorder
.getControl("RecordControl");
debug("SDPIntegrator:setUpSend():Audio Input Format : "+rc.getContentType());
rc.setRecordStream(new ByteArrayOutputStream());
debug("SDPIntegrator:setUpSend():RecordControler stream is set");
rc.startRecord();
debug("SDPIntegrator:setUpSend():RecordControler started");
debug("SDPIntegrator:setUpSend():Starting Recorder while in state ("+( (recorder.getState() == Player.REALIZED)?"Realized":"Not Realized" ) +")");
recorder.start();
debug("SDPIntegrator:setUpSend():Recorder started");
debug("SDPIntegrator:setUpSend():**** Waiting ************");
try {
Thread.sleep(20000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
debug("SDPIntegrator:setUpSend():**** Stopping ************");
recorder.stop();
debug("SDPIntegrator:setUpSend():Recorder stop");
rc.stopRecord();
debug("SDPIntegrator:setUpSend():RecorderControl stop");
rc.commit();
debug("SDPIntegrator:setUpSend():RecorderControl commit");
recorder.close();
debug("SDPIntegrator:setUpSend():Recorder close");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
debug("SDPIntegrator:setUpSend():IOE:"+e.getMessage());
} catch (MediaException e) {
// TODO Auto-generated catch block
e.printStackTrace();
debug("SDPIntegrator:setUpSend():ME:"+e.getMessage());
} catch (IllegalStateException e) {
e.printStackTrace();
debug("SDPIntegrator:setUpSend():IS:"+e.getMessage());
}
}
.........
.........

Problem is after realization , when I used,
recorder.start();
I see SymbianOS Error -1

When I use audio/wav in place of audio/amr , the recorder starts and works fine.
So what is the problem ? where am I doing wrong ?

[hartti]

Symbian Error Codes are listed for example here
http://www.newlc.com/Symbian-OS-Error-Codes.html

"KErrNotFound -1 Unable to find the specified object "

I have not tested this and I do not have documentation in front of me right now, but looks like the amr recording is not supported on 3230

Hartti

[kamanashisroy]

hi Hartti,

Thanks for reply.

Now, I have found audio recording in 3230 is supported according to the audio/vedio capability table in,
http://forum.nokia.com/main/resource...deo/index.html

Moreover, There are applications( may be builtin or may be not java application) that can record audio as amr file.

Again, the player is able to realize(). If the encoding were not supported the createPlayer() would create an exception like "amr encoding is not supported". The problem is when it starts. Note that I did not use prefetch() while my first post. When I used prefetch(), I found the player could not prefetch too(with the same exception).

So, please tell me if there is any solution for this. Another thing I want to know is that if there is any ways to set the amr mode ( I mean like &mode=0 ) because there are several modes of amr encoding available.

Thanks again,
Kamanashis Roy

[hartti]

Kamanashis, note that many times the Java implementation on a device does not support all of the formats what the native platform supports.

If the midlet works with wav and fails with amr, the logical explanation is that amr is not supported through Java.

I have not tested this myself. Unfortunately also the MIDP MMAPI support document on our site does not give definite answer to this question.

Hartti