The VideoLAN Forums

Posted: **03 Oct 2016 21:24**

According to the documentation (http://cocoadocs.org/docsets/MobileVLCK ... TrackIndex), setting the "currentAudioTrackIndex" to -1 will effectively mute the player. However, on iOS, this property has type UInt (unsigned int). How do you assign a negative number to a UInt?

Posted: **05 Oct 2016 16:43**

I would try to use media.currentAudioTrackIndex = (UInt)-1; which shall result in 0xFFFFFFFF and work.

Posted: **06 Oct 2016 03:46**

I would try to use media.currentAudioTrackIndex = (UInt)-1; which shall result in 0xFFFFFFFF and work.

Thanks for taking the time to response to my question. I already tried that before posting the question but unfortunately, the compiler treats that as a syntax error:

Binary operator '-' cannot be applied to operands of type '(UInt).Type' (aka 'UInt.Type') and 'Int'

I found another way to mute but curious how to set -1 as the index as mentioned in the documentation.

Posted: **06 Oct 2016 16:25**

You use clang in Xcode 8?
I just tried this in a brief sample and I do not even get a warning.

Code: Select all

int main(int argc, const char * argv[]) {
   @autoreleasepool {
      UInt x;
      
      x = (UInt)-1;
      NSLog( @"x is %uld = 0x%x", x, x );
   }
   return 0;
}

And console shows

Code: Select all

2016-10-06 16:22:48.412 UIntTest[70763:1076284] x is 4294967295ld = 0xffffffff
Program ended with exit code: 0

Posted: **06 Oct 2016 16:49**

I'm using Swift 3.0 w/ Xcode 8.

Posted: **09 Oct 2016 14:17**

OK, one more reason I continue to use C and ObjectiveC

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