如何通过NSData播放音频缓冲？

Question

我想通过NSData播放音频缓冲：

NSData * audioData = [NSData dataWithBytes:inBuffer->mAudioData length:inBuffer->mAudioDataByteSize * NUM_BUFFERS];

在此代码中：

void AudioInputCallback(void * inUserData,
                        AudioQueueRef inAQ,
                        AudioQueueBufferRef inBuffer,
                        const AudioTimeStamp * inStartTime,
                        UInt32 inNumberPacketDescriptions,
                        const AudioStreamPacketDescription * inPacketDescs)
{
    RecordState * recordState = (RecordState*)inUserData;
    if (!recordState->recording)
    {
        printf("Not recording, returning\n");
    }


    printf("Writing buffer %lld\n", recordState->currentPacket);
    OSStatus status = AudioFileWritePackets(recordState->audioFile,
                                            false,
                                            inBuffer->mAudioDataByteSize,
                                            inPacketDescs,
                                            recordState->currentPacket,
                                            &inNumberPacketDescriptions,
                                            inBuffer->mAudioData);



    if (status == 0)
    {
        recordState->currentPacket += inNumberPacketDescriptions;

        NSData * audioData = [NSData dataWithBytes:inBuffer->mAudioData length:inBuffer->mAudioDataByteSize * NUM_BUFFERS];