Нет данных глубины с iPhone X, iPhone XS в порядке - PullRequest
Новая
       33

Нет данных глубины с iPhone X, iPhone XS в порядке

5 голосов
/ 14 февраля 2020

Я не получаю depthData, когда я делаю фотографию на iPhone X при первой съемке.

Разрешения камеры действительны

Если я запускаю код на iPhone X , сделайте снимок, без данных о глубине, если я коснусь еще раз, я получу данные о глубине. Если я добавлю задержку до того, как позвоню capturePhoto, я получу depthData

Если я запусту код на iPhone XS , сделайте снимок, у меня есть данные глубины прямо сейчас

Что-то мне не хватает в моем коде? 

import UIKit
import AVFoundation
import os.log

extension OSLog {
    /// The subsystem for the app
    public static var appSubsystem = "com.my.app"
    /// Image processing category
    static let imageService = OSLog(subsystem: OSLog.appSubsystem, category: "Image")
}

/**
 Use this as a logging system, it's compiled out for release builds for now.
 */
func DLog(_ string: String, subsystem: OSLog, type: OSLogType = .debug) {
    #if DEBUG
    os_log("%{PUBLIC}@", log: subsystem, type: type, string)
    #endif
}

class ViewController: UIViewController {

    var photoProcessingQueue = DispatchQueue(label: "ProcessingQueue", attributes: [], autoreleaseFrequency: .workItem)

    var photoCaptureOutput: AVCapturePhotoOutput!
    var photoSession: AVCaptureSession!
    var initalized: Bool = false

    func setupCaptureSession() {

        defer {
            photoSession.commitConfiguration()
        }

        photoCaptureOutput = AVCapturePhotoOutput()
        photoSession = AVCaptureSession()

        DLog("setupCaptureSession \(String(describing: Thread.current))", subsystem: .imageService)

        photoSession.beginConfiguration()
        photoSession.sessionPreset = .photo

        do {

            guard let defaultCaptureDevice = AVCaptureDevice.default(.builtInDualCamera, for: .video, position: .back) else {
                DLog("can't find camera", subsystem: .imageService, type: .error)
                return
            }

            let videoDeviceInput = try AVCaptureDeviceInput(device: defaultCaptureDevice)

            if photoSession.canAddInput(videoDeviceInput) {
                photoSession.addInput(videoDeviceInput)
            } else {
                DLog("can't add camera", subsystem: .imageService, type: .error)
                return
            }

            if photoSession.canAddOutput(photoCaptureOutput) {
                photoSession.addOutput(photoCaptureOutput)

                photoCaptureOutput.isHighResolutionCaptureEnabled = true
                photoCaptureOutput.isDepthDataDeliveryEnabled = photoCaptureOutput.isDepthDataDeliverySupported
                photoCaptureOutput.maxPhotoQualityPrioritization = .quality
            } else {
                DLog("Could not add photo output to the session", subsystem: .imageService, type: .error)
            }

        } catch {

            DLog("general camera error: \(error)", subsystem: .imageService, type: .error)
        }

    }

    @IBAction func takePhoto(sender: UIButton) {
        photoProcessingQueue.async {

            if !self.initalized {
                self.setupCaptureSession()
                self.initalized = true
            }

            DLog("Photo session running: \(self.photoSession.isRunning) \(String(describing: Thread.current))", subsystem: .imageService)
            self.photoSession.startRunning()
            DLog("Photo session running: \(self.photoSession.isRunning) \(String(describing: Thread.current))", subsystem: .imageService)

            let photoSettings: AVCapturePhotoSettings
            if self.photoCaptureOutput.availablePhotoCodecTypes.contains(.jpeg) {
                photoSettings = AVCapturePhotoSettings(format: [AVVideoCodecKey: AVVideoCodecType.jpeg])
            } else {
                photoSettings = AVCapturePhotoSettings()
            }

            photoSettings.flashMode = .auto
            photoSettings.isDepthDataDeliveryEnabled = self.photoCaptureOutput.isDepthDataDeliverySupported
            photoSettings.photoQualityPrioritization = .quality

            // BUG iPhone X returns no depthData without a delay here...
            //Thread.sleep(forTimeInterval: 0.1)

            // Actually capture photo
            self.photoCaptureOutput.capturePhoto(with: photoSettings, delegate: self)
        }
    }
}

extension ViewController : AVCapturePhotoCaptureDelegate {
    func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
        DLog("photo.depthData?.depthDataMap: \(photo.depthData?.depthDataMap)", subsystem: .imageService)
    }
}
...