您好，我正在尝试使用AudioConverterFillComplexBuffer将AAC缓冲区转换为PCM。这是我的代码-(void)initDecoder{AudioStreamBasicDescriptionoutAudioStreamBasicDescription;outAudioStreamBasicDescription.mSampleRate=44100.0;outAudioStreamBasicDescription.mFormatID=kAudioFormatLinearPCM;outAudioStreamBasicDescription.mFormatFlags=

我想将PCM(CMSampleBufferRef(s)goinglivefromAVCaptureAudioDataOutputSampleBufferDelegate)编码成AAC。当第一个CMSampleBufferRef到了，我设置了(进/出)AudioStreamBasicDescription(s)，根据文档“out”AudioStreamBasicDescriptioninAudioStreamBasicDescription=*CMAudioFormatDescriptionGetStreamBasicDescription((CMAudioFormatDescripti