Question

使用在iOS中引入64位处理器之前编写的一些Core Audio代码。该应用程序在32位处理器上编译并运行良好，但是当我尝试在iPhone 5s上运行时，我得到两个编译器错误。

AQRecorderState ars;    

static void AQInputCallback(void                                 *aqRecorderState,  // AQRecorderState struct
                            AudioQueueRef                        inQ,
                            AudioQueueBufferRef                  inBuffer,
                            const AudioTimeStamp                 *timestamp,
                            unsigned long                        inNumPackets,
                            const AudioStreamPacketDescription   *mDataFormat){

    AQRecorderState *pArs = (AQRecorderState *)aqRecorderState;

    if (inNumPackets == 0 && pArs->mDataFormat.mBytesPerPacket != 0)
        inNumPackets = inBuffer->mAudioDataByteSize / pArs->mDataFormat.mBytesPerPacket;    


    // This line returns an error "No matching function call for 'AudioFileWritePackets'" 
    if (AudioFileWritePackets(pArs->mAudioFile,
                              false, 
                              inBuffer->mAudioDataByteSize,
                              mDataFormat, 
                              pArs->mCurrentPacket, 
                              &inNumPackets, 
                              inBuffer->mAudioData) == noErr){

        pArs->mCurrentPacket += inNumPackets;  // advance packet index pointer
    }

    // don't re-queue the sound buffers if stop has been pressed
    if (!pArs->mIsRunning)
        return;

    // send the buffer back to the queue for more data
    AudioQueueEnqueueBuffer(pArs->mQueue, inBuffer, 0, NULL);
}

尝试创建新的音频队列时出现相同的错误。我相信这是因为AQInputCallback线......

// Error: No matching function for call to 'AudioQueueNewInput'
AudioQueueNewInput(&ars.mDataFormat, 
                   AQInputCallback, 
                   &ars, 
                   NULL, 
                   kCFRunLoopCommonModes, 
                   0, 
                   &ars.mQueue);

感谢您的帮助！我已经多次阅读了学习核心音频书，并搜索了SO和互联网几天试图解决这个问题。

Answer 1

第一个错误可能是由inNumPackets引起的，其定义为unsigned long。在32位进程中long是32位，而在64位进程中long是64位。 AudioFileWritePackets中的参数需要UInt32*。你可以通过一个临时变量来进行调用：

UInt32 inNumPacketsTmp = inNumPackets;
if (AudioFileWritePackets(pArs->mAudioFile,
                          false, 
                          inBuffer->mAudioDataByteSize,
                          mDataFormat, 
                          pArs->mCurrentPacket, 
                          &inNumPacketsTemp, 
                          inBuffer->mAudioData) == noErr){
    inNumPackets = inNumPacketsTmp;
    pArs->mCurrentPacket += inNumPackets;  // advance packet index pointer
}

我不确定第二个。

在64位处理器上运行时出现Core Audio错误

1 个答案: