Hi list,
I was writing on a small demo app which at some place included these lines:
if (!measureFPS) {
SDLMixer.openAudio(44100, SDLMixer.AUDIO_S16SYS, 2, 2048);
System.out.println("Loading song.");
MixMusic song = SDLMixer.loadMUS(Thread.currentThread()
.getContextClassLoader()
.getResourceAsStream("memesong.ogg"));
System.out.println("Playing song: " + song);
SDLMixer.playMusic(song, 0);
}
The code does not look very special but at runtime something odd will
happen: You will hear a small bit of music and then it stops. The reason
for this is that the MixMusic instance 'song' gets garbage collected
when the if-block ends. I describe this here because this behavior is
caused by the way Swig handles native pointers and can be a pitfall for
others as it was for me.
You can work around this problem by assigning an instance like MixMusic
(which in the above example is a local variable) to an instance or class
variable.
@Ivan: If you are going to write a FAQ for SDLJava sometime it would be
good to add this issue to it.
cu
Robert
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