远程IO AudioBufferList崩溃

Question

为什么下面的粗体线会崩溃？有什么建议吗？

static OSStatus AudioInputCallback(void *inRefCon,
                               AudioUnitRenderActionFlags *ioActionFlags,
                               const AudioTimeStamp *inTimeStamp,
                               UInt32 inBusNumber,
                               UInt32 inNumberFrames,
                               AudioBufferList *ioData) {

AudioUnitRender(audioUnitIn, ioActionFlags, inTimeStamp, 
inBusNumber, inNumberFrames, inputBufferList);

AudioSampleType is a signed short
**AudioSampleType (pointer)data = inputBufferList->mBuffers[0].mData;**