Sound problems on Symbian 60 phones

[ed_welch]

Hi,
I am getting various problems when playing sounds on both emulator and physical phone.
When I try to play a wav file I get the following error:
java.lang.ClassCastException: com.sun.media.sound.RealTimeSequencer
at com.nokia.phone.sdk.concept.mirrors.mma.media.player.MidiPlayer.doRealize(MidiPlayer.java)
at com.nokia.phone.sdk.concept.mirrors.mma.media.player.TonePlayer.doRealize(TonePlayer.java)
at com.nokia.phone.sdk.concept.mirrors.mma.media.player.BasicPlayer.realize(BasicPlayer.java)
at com.nokia.phone.sdk.concept.mirrors.mma.media.MMAManager.init(MMAManager.java)
at com.nokia.phone.sdk.concept.mirrors.mma.media.MMAManager.createPlayer(MMAManager.java)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.nokia.phone.sdk.concept.gateway.e.a(e.java)
at com.nokia.phone.sdk.concept.gateway.e.run(e.java)
at java.lang.Thread.run(Thread.java:595)

but the sound in fact plays ok in the emulator.
This is the code I use:
InputStream is = Runtime.getRuntime().getClass().getResourceAsStream(fileSpec);
Player p = Manager.createPlayer(is, "audio/x-wav");
try
{
p.start();
}
catch (Exception ex)
{
System.out.println(ex.getMessage());
System.out.println(ex);
}

When I try playing a midi file I get the same error, but in this case the file does not play at all.
The same midis and wavs work fine on SE phones.

[juarezjunior]

Hi ed_welch,

Please let us know which device you're talking about.

BR,

Juarez Junior

[ed_welch]

The error message happens on the emultor.
The actual phone I am using is a Nokia 6260

[soku123]

Hi,
Please check the application settings whether the sound is set to OFF mode.Or is your phone in silent profile.
thanks
Soku

[wang_shui]

hi ed_welch,

Try calling p.prefetch() before u call p.start().

ie;
InputStream is = Runtime.getRuntime().getClass().getResourceAsStream(fileSpec);
Player p = Manager.createPlayer(is, "audio/x-wav");
try
{
p.prefetch();
p.start();
}
catch (Exception ex)
{
System.out.println(ex.getMessage());
System.out.println(ex);
}


Wang

[juarezjunior]

Hello there,

AFAIK it's not needed to call prefetch() if you call start() considering that it's called implicitly.

"If start is called when the Player is in the UNREALIZED or REALIZED state, it will implicitly call prefetch."

This is from the Javadocs.

I cannot figure out exactly what the problem is, you talk about errors but it's not clear if they happen on emulator or on device. I'm sure Nokia 6260 implements MMAPI, though.

BR,

Juarez Junior

[ed_welch]

Hello there,

AFAIK it's not needed to call prefetch() if you call start() considering that it's called implicitly.

"If start is called when the Player is in the UNREALIZED or REALIZED state, it will implicitly call prefetch."

This is from the Javadocs.

I cannot figure out exactly what the problem is, you talk about errors but it's not clear if they happen on emulator or on device. I'm sure Nokia 6260 implements MMAPI, though.

BR,

Juarez Junior

Hello Juarez,
The ClassCastException happens in the emulator the first time that I call Manager.createPlayer. The exception is not caught even though there is a catch block ( I don't know why).

[juarezjunior]

Hi ed_welch,

Have you solved this problem? Besides, have you tried it on the device?

I cannot figure out the reasons why a ClassCastException would happen for your case...

BR,

Juarez Junior

[peterblazejewicz]

hi,

@ed_welch
maybe try "audio/wav" instead of "audio/x-wav" with the Manager.createPlayer(),
I've remember similiar issue (exception) on Nokia TechLib,

regards,
Peter

[clive@incognitogames.com]

I'm having the same problem.

If it's any help, the problem wasn't there until I upgraded to the beta 0.3 s60 emulator and java 1.5

Even if I run an old version of my app, on the 0.2 emulator, I get this error.
Maybe the installation altered some generic nokia libraries that all the emulators use..?

[ed_welch]

Yeah, I'm using Java 1.5 too. And an old version of the Nokia SDK, beta 0.3.1 (It was the only one that I could get to work with Eclipse).
Maybe that is the problem.