1 
- (void)captureOutput:(AVCaptureOutput *)captureOutput  didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection {

    AudioBufferList audioBufferList;
    NSMutableData *data= [NSMutableData data];
    CMBlockBufferRef blockBuffer;
    CMSampleBufferGetAudioBufferListWithRetainedBlockBuffer(sampleBuffer, NULL, &audioBufferList, sizeof(audioBufferList), NULL, NULL, 0, &blockBuffer);

    for( int y=0; y< audioBufferList.mNumberBuffers; y++ ){

        AudioBuffer audioBuffer = audioBufferList.mBuffers[y];
        Float32 *frame = (Float32*)audioBuffer.mData;

        [data appendBytes:frame length:audioBuffer.mDataByteSize];

    }

    CFRelease(blockBuffer);
    CFRelease(ref);

    AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithData:data error:nil];
    [player play];
}

我不知道如何将 NSdata 转换为音频缓冲区。

具有上述数据的 AVAudioPlayer 返回 nil 并出现此错误：Error = Error Domain=NSOSStatusErrorDomain Code=1954115647

4

1 回答 1

0

尝试将播放器添加为实例变量

@property (strong, nonatomic) AVAudioPlayer *player;

然后从 captureOutput 分配你的播放器：

self.player = [[AVAudioPlayer alloc] initWithData:data error:nil];

希望这会奏效:)

于 2016-05-19T06:16:12.467 回答