質問編集履歴
2
コードの方を追記したい
test
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test
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@@ -6,8 +6,234 @@
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※追記
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私がやろうとしているのはマイクから取得したデータをリアルタイムにFFTしたいと考えています
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import UIKit
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import AudioToolbox
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private func AudioQueueInputCallback(
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_ inUserData: UnsafeMutableRawPointer?,
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inAQ: AudioQueueRef,
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inBuffer: AudioQueueBufferRef,
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inStartTime: UnsafePointer<AudioTimeStamp>,
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inNumberPacketDescriptions: UInt32,
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inPacketDescs: UnsafePointer<AudioStreamPacketDescription>?)
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{
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print(inBuffer) //出力されない
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//ここが音声データ? 出力されない
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}
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class AudioViewController: UIViewController {
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@IBOutlet weak var loudLabel: UILabel!
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@IBOutlet weak var peakTextField: UITextField!
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@IBOutlet weak var averageTextField: UITextField!
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var queue: AudioQueueRef!
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var timer: Timer!
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override func viewDidLoad() {
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super.viewDidLoad()
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self.startUpdatingVolume()
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}
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override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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self.stopUpdatingVolume()
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}
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override func didReceiveMemoryWarning() {
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super.didReceiveMemoryWarning()
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// Dispose of any resources that can be recreated.
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}
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// MARK: - Internal methods
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func startUpdatingVolume() {
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// Set data format
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var dataFormat = AudioStreamBasicDescription(
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mSampleRate: 44100.0,
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mFormatID: kAudioFormatLinearPCM,
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mFormatFlags: AudioFormatFlags(kLinearPCMFormatFlagIsBigEndian | kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked),
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mBytesPerPacket: 2,
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mFramesPerPacket: 1,
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mBytesPerFrame: 2,
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mChannelsPerFrame: 1,
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mBitsPerChannel: 16,
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mReserved: 0)
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// Observe input level
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var audioQueue: AudioQueueRef? = nil
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var error = noErr
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error = AudioQueueNewInput(
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&dataFormat,
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AudioQueueInputCallback,//充填完了時に呼ばれる？
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UnsafeMutableRawPointer(Unmanaged.passUnretained(self).toOpaque()),
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.none,
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.none,
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0,
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&audioQueue)
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if error == noErr {
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self.queue = audioQueue
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}
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AudioQueueStart(self.queue, nil)
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// Enable level meter
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var enabledLevelMeter: UInt32 = 1
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AudioQueueSetProperty(self.queue, kAudioQueueProperty_EnableLevelMetering, &enabledLevelMeter, UInt32(MemoryLayout<UInt32>.size))
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self.timer = Timer.scheduledTimer(timeInterval: 0.5,
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target: self,
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selector: #selector(AudioViewController.detectVolume(_:)),
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userInfo: nil,
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repeats: true)
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self.timer?.fire()
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}
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func stopUpdatingVolume()
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{
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// Finish observation
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self.timer.invalidate()
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self.timer = nil
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AudioQueueFlush(self.queue)
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AudioQueueStop(self.queue, false)
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AudioQueueDispose(self.queue, true)
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}
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func detectVolume(_ timer: Timer)
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{
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// Get level
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var levelMeter = AudioQueueLevelMeterState()
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var propertySize = UInt32(MemoryLayout<AudioQueueLevelMeterState>.size)
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AudioQueueGetProperty(
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self.queue,
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kAudioQueueProperty_CurrentLevelMeterDB,
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&levelMeter,
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&propertySize)
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// Show the audio channel's peak and average RMS power.
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self.peakTextField.text = "".appendingFormat("%.2f", levelMeter.mPeakPower)
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self.averageTextField.text = "".appendingFormat("%.2f", levelMeter.mAveragePower)
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// Show "LOUD!!" if mPeakPower is larger than -1.0
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self.loudLabel.isHidden = (levelMeter.mPeakPower >= -1.0) ? false : true
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}
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}
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1
追記
test
CHANGED
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File without changes
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test
CHANGED
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@@ -3,3 +3,11 @@
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3
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5
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現在私がやっているのはAudioToolboxを使って、マイクからデータを拾うもので波型データを得る方法が調べてもSwift3で使えそうなサンプルが見つかりませんでした。
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※追記
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私がやろうとしているのはマイクから取得したデータをリアルタイムにFFTしたいと考えています
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