如何在printf（緩衝區）中獲取原始數據？在音頻記錄iphone

Question

我需要像0/1

static OSStatus recordingCallback(void *inRefCon, 
            AudioUnitRenderActionFlags *ioActionFlags, 
           // AudioQueueBufferRef inBuffer, 
            const AudioTimeStamp *inTimeStamp, 
            UInt32 inBusNumber, 
            UInt32 inNumberFrames, 
            AudioBufferList *ioData) { 

     ////AudioHelper *remoteIOplayer = (AudioHelper *)inRefCon; 

    signalTime = CFAbsoluteTimeGetCurrent();  


    AudioBufferList list; 

    // redundant 
    list.mNumberBuffers = 1; 
    list.mBuffers[0].mData = sampleBuffer; 
    list.mBuffers[0].mDataByteSize = 2 * inNumberFrames; 
    list.mBuffers[0].mNumberChannels = 1; 

    ioData = &list;   
    printf("No buffers: %d, buffer length: %d bus number: %d\n", ioData->mNumberBuffers, ioData->mBuffers[0].mData, inBusNumber); 

Answer 1

SInt16* buf = (SInt16 *)ioData->mBuffers[0].mData; 
for(int i=0; i< ioData->mBuffers[0].mDataByteSize/2; i=i+2) { 
    printf("\n%d\n%d ", buf[i], buf[i+1]); 
} 

原始數據