Muss ein fertiger Puffer von einem OpenSl ES-Audioplayer freigegeben werden?

Question

nur zur Bestätigung.Wenn ein Audioplayer, der über OpenSl ES für Android erstellt wurde, endet, um einen Puffer abzuspielen, ist der Puffer automatisch vom Müllsammler freigegeben?Oder muss ich den Puffer selbst frei machen?

Wenn es letzt ist, könnte ich Hilfe verwenden.Aber wie für jetzt werde ich keinen Code posten, bis ich gesagt habe, dass ich es selbst tun muss ...

Answer 1

The buffer queue doesn't actually allocate buffer memory itself (or need to free it), you pass in pointers to memory you have allocated via the 'enqueue' function. You will need to free the memory you allocated when you're finished playing buffers.

As OpenSL ES is a native library in C++, it knows nothing of garbage collection, any memory you allocate for the API must be freed by you, and objects you create must have 'destroy' called on them to clean up internal memory.

Answer 2

As the previous poster said, you call Enqueue with a buffer you have created previously. I'd point out, however, that unless you're playing only one audio event once in your app, you should probably keep re-using your audio buffers to avoid GC altogether - the beauty of C!

Also check out the Android OpenSL ES doc concerning Destroying your interfaces once your done with them, that has to be done manually.