AVAudioEngine:播放Int16 PCM示例流

let audioEngine = AVAudioEngine()

let playerNode = AVAudioPlayerNode()
audioEngine.attach(playerNode)

let format = AVAudioFormat(commonFormat: .pcmFormatInt16, sampleRate: 44100, channels: 2, interleaved: false)

let buffer = AVAudioPCMBuffer(pcmFormat: format, frameCapacity: AVAudioFrameCount(bufferSize))
buffer.frameLength = AVAudioFrameCount(bufferSize)
let audioBuffer = buffer.int16ChannelData![0]
for i in 0..<bufferSize {
    audioBuffer[i] = Int16(sampleData[i])
}

audioEngine.connect(playerNode, to: audioEngine.outputNode, format: format)

try audioEngine.start()

playerNode.scheduleBuffer(buffer, at: nil, options: .interrupts, completionHandler: nil)
playerNode.play()