使用Swift在AV Audio Recorder中实现队列服务 [英] implementing Queue Services in AV Audio Recorder using Swift

问题描述

是否可以在 AVRecorder 框架中创建类似于 AudioQueue 服务的缓冲区概念。在我的应用程序中，我需要捕获音频缓冲区并通过Internet发送它。服务器连接部分已经完成，但是我想知道是否有一种方法可以在前台连续录制语音，并使用 Swift 。
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Is it possible to create a buffer concept similar to AudioQueue services in AVRecorder Framework. In my application , i need to capture the Audio buffer and send it over the Internet. The server connection part is done, but i wanted to know if there is a way to record the voice continuously in the foreground, and pass this audio buffer by buffer at the background to the server using Swift. Comments are appreciated.

推荐答案

AVAudioRecorder 记录到文件，因此您无法轻松地使用它来将音频数据流式传输出您的应用。另一方面， AVAudioEngine 可以在捕获音频缓冲区时回叫您：

AVAudioRecorder records to a file, so you can't easily use it to stream audio data out of your app. AVAudioEngine on the other hand can call you back as it captures audio buffers:

var engine = AVAudioEngine()

func startCapturingBuffers() {
    let input = engine.inputNode!
    let bus = 0

    input.installTapOnBus(bus, bufferSize: 512, format: input.inputFormatForBus(bus)) { (buffer, time) -> Void in
        // buffer.floatChannelData contains audio data
    }

    try! engine.start()
}

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