录音播放AudioUnit的使用,如有错误请指出并修改

[xinzhuzi]

录音播放文件MicSource.mm 录音回调函数中使用AudioUnitRender(...)传入的AudioBufferList应该malloc申请内存空间,然后再free().不然会造成不必要的bug!如下:
static OSStatus handleInputBuffer(void *inRefCon,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList ioData)
{
videocore::iOS::MicSource mc =static_castvideocore::iOS::MicSource*(inRefCon);

AudioBuffer buffer;
buffer.mData = NULL;
buffer.mDataByteSize = 0;
buffer.mNumberChannels = 2;

AudioBufferList *buffers = (AudioBufferList *)malloc(sizeof(AudioBufferList));
buffers->mNumberBuffers = 1;
buffers->mBuffers[0] = buffer;

OSStatus status = AudioUnitRender(mc->audioUnit(),
                                  ioActionFlags,
                                  inTimeStamp,
                                  inBusNumber,
                                  inNumberFrames,
                                  buffers);

if(!status) {
    mc->inputCallback((uint8_t*)buffers->mBuffers[0].mData, buffers->mBuffers[0].mDataByteSize, inNumberFrames);
}
free(buffers);
return status;

}

如有错误,请指出并修改!