MaxPreDelayFramesMask 448 Source/platform/audio/DynamicsCompressorKernel.cpp preDelayReadIndex = (preDelayReadIndex + 1) & MaxPreDelayFramesMask; MaxPreDelayFramesMask 449 Source/platform/audio/DynamicsCompressorKernel.cpp preDelayWriteIndex = (preDelayWriteIndex + 1) & MaxPreDelayFramesMask;