连接到Phantom 4 Pro但未接收视频

时间:2017-01-15 15:03:31

标签: dji-sdk

我已经按照全景演示示例连接到无人机。我正在使用正确的型号和DJICamera获得DJIAircraft,但视频永远不会启动(没有图像& didReceiveVideoData永远不会被调用)。如果我切换到DJI GO 4应用程序,我可以看到实时视频输入。有什么想法吗?

//
//  CaptureViewController.swift
//

// MARK: - Source https://developer.dji.com/mobile-sdk/documentation/ios-tutorials/PanoDemo.html

import UIKit
import VideoPreviewer
import ToastSwiftFramework

class CaptureViewController: UIViewController, DJISDKManagerDelegate, DJICameraDelegate, DJIPlaybackDelegate, DJIMissionManagerDelegate, DJIFlightControllerDelegate {
    @IBOutlet var fpvPreviewView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()

        tabBarItem.title = "CAPTURE".localized

        VideoPreviewer.instance().setView(fpvPreviewView)
        self.registerApp()
    }

    func registeredAppWithError(error: Error?) {
        guard error == nil else {
            makeToast("Error registering app \(error)")

            return
        }

        VideoPreviewer.instance().start()
    }

    //MARK: - DJI Delegate

    func registerApp() {
        DJISDKManager.registerApp("******************", with: self)
    }

    func sdkManagerDidRegisterAppWithError(_ error: Error?) {
        guard error == nil else {
            makeToast("Error registering SDK Manager \(error)")

            return
        }

        DJISDKManager.startConnectionToProduct()

        makeToast("Registered app with DJISDKManager")
    }

    func camera(product: DJIBaseProduct?) -> DJICamera? {
        guard let aircraft = DJISDKManager.product() as? DJIAircraft else { return nil }

        return aircraft.camera
    }

    func sdkManagerProductDidChange(from oldProduct: DJIBaseProduct?, to newProduct: DJIBaseProduct?) {
        makeToast("Found \(newProduct?.model ?? "")")

        guard let camera = camera(product: newProduct) else {
            makeToast("No camera!")

            return
        }

        makeToast("Camera \(camera.displayName)")

        camera.delegate = self
        camera.playbackManager?.delegate = self
    }

    var receivedVideo = false

    func camera(_ camera: DJICamera, didReceiveVideoData videoBuffer: UnsafeMutablePointer<UInt8>, length size: Int) {
        makeToast("Receiving video!")

        VideoPreviewer.instance().push(videoBuffer, length: Int32(size))
    }

    func playbackManager(_ playbackManager: DJIPlaybackManager, didUpdate playbackState: DJICameraPlaybackState) {
        makeToast("PlaybackState: \(playbackState.playbackMode)")
    }
}

3 个答案:

答案 0 :(得分:0)

我知道它已经很晚但我们在App中遇到了类似的问题,问题是当DJI无人机连接时,我们在连接时没有拿到相机的实例。连接后添加5-10秒的延迟。我已经做了类似的事情,它现在适用于每个无人机。

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(7 * Double(NSEC_PER_SEC))), dispatch_get_main_queue(), {
                    let camera = ConnectedDroneManager.sharedDroneInstance.fetchCamera()
                camera?.delegate = self
                camera?.playbackManager?.delegate = self

})

希望这会对你有所帮助。

答案 1 :(得分:0)

您应该在应用连接到DJI产品后启动视频流。将VideoPreviewer.instance().start()放入sdkManagerProductDidChange委托方法可以解决问题。

func sdkManagerDidRegisterAppWithError(_ error: Error?) {
    guard error == nil else {
        makeToast("Error registering SDK Manager \(error)")

        return
    }

    DJISDKManager.startConnectionToProduct()
    VideoPreviewer.instance().start()

    makeToast("Registered app with DJISDKManager")
}

答案 2 :(得分:-1)

DJI的iOS PanoDemo是用Objective-C编写的,我在Phantom 4 Pro上试过,演示应用程序可以成功显示实时视频。好像你正在使用Swift编写自己的DJI SDK应用程序。

在您上面显示的代码中,我认为您尚未成功注册该应用。在registerApp()乐趣中,您通过&#34; ******************&#34;在DJISDKManager.registerApp()方法中,这是不正确的,你应该在DJI开发者网站用户中心使用你的Xcode的包ID创建一个App密钥:https://developer.dji.com/user/apps/,然后将其粘贴到{{1}方法。

更多信息,您可以按照Github上的DJI Swift示例代码:https://github.com/dji-sdk/Mobile-SDK-iOS/tree/master/Sample%20Code/SwiftSampleCode了解如何制作自己的DJI SDK应用。希望这有帮助!