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iosiphonexcodecocos2d-iphonelibpd

Crackling noise on playback on iOS9 and 9.1 (libPD + cocos2d + xcode 7.1)

I'm writing an app using cocos2d and libpd on iOS. After updating XCode to 7.1 I had to do a workaround regarding CG shaders not setting up correctly, as per: Coco2d 2.1 and Xcode 7 iOS 9 crash ccShader

Unfortunately I started getting crackling noise on playback on iOS9 and 9.1 devices. Pre iOS 9 don't display this problem. I'm wondering whether it has something to do with the shaders workaround.

anybody with the same issue?

Solution

  • It turned out that crackling has nothing to do with iOS9 or XCode 7. The object initialising libpd has been initialised twice causing the audio engine to have two active copies.