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Objective c
Comments
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Specifically could you show this in objective c? https://github.com/Snapchat/camera-kit-reference/blob/main/samples/ios/CameraKitSample/CameraKitSample/AppDelegate.swift
Thanks
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Hi @SlideUp, Thanks for sharing this! Yah, basically, while many parts of Reference UI are accessible in Objective-C, not all are at the moment. The Reference UI is meant to provide reusable UI components and most developers are using Swift and SwiftUI.
SnapchatDelegate, to take one of your examples, is accessible in Swift only.However, the code is available to you and you can make these elements accessible in Objective-C, for example by doing:
@objc public protocol SnapchatDelegate: AnyObject.You will then have to do the same for other types. Some of them (e.g. Enums) need a little more than just the @objc attribute to be visible in Swift.
Is your codebase currently in Objective-C or is the language you prefer? I would like to pass on your feedback to our team.
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We re-wrote a basic version of the demo app 100% in objective c successfully. We’re able to start a session and apply a lens. It was a great learning experience of the camera kit flow 🤓
There’s a 10 seconds delay for the camera preview to show for the first time. We’re currently investigating it.
We also implemented a custom remote api following the sample and noticed it’s not a fully available feature yet.
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@arashp why does it take 9 seconds for this method to complete?
[self.cameraKit startWithInput:input arInput:arInput cameraPosition:AVCaptureDevicePositionFront videoOrientation:AVCaptureVideoOrientationPortrait dataProvider:dataProvider hintDelegate:nil textInputContextProvider:nil agreementsPresentationContextProvider:nil];
see logs below.
it's quite slow.
2022-10-05 19:57:32.807949-0300 camkit[345:39583] self.cameraKit startWithInput started
2022-10-05 19:57:41.976361-0300 camkit[345:39583] Metal API Validation Enabled
[SG][I] [GL::Device] platformDeviceString: Apple Inc. Apple A10 GPU OpenGL ES 3.0 Metal - 66.6[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
2022-10-05 19:57:42.078955-0300 camkit[345:39583] self.cameraKit startWithInput ended0 -
We re-wrote a basic version of the demo app 100% in objective c successfully. We’re able to start a session and apply a lens. It was a great learning experience of the camera kit flow 🤓
Wow nice!! Any key learnings to share?
why does it take 9 seconds for this method to complete?
Checking with team... Is that 9 second unique in objective c or in general?
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The swift code doesn't have the 9 seconds delay on initilization.
But it has this error in the logs
2022-10-07 15:44:50.294130-0300 CameraKitSample[2271:633813] Metal API Validation Enabled
[SG][I] [GL::Device] platformDeviceString: Apple Inc. Apple A10 GPU OpenGL ES 3.0 Metal - 66.6[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
[SG][I] CORE: OpenGL Version string: OpenGL ES 3.0 Metal - 66.6
[SG][I] CORE: SG GL Version: 30
2022-10-07 15:44:51.186687-0300 CameraKitSample[2271:633835] Task.<3> finished with error [-999] Error Domain=NSURLErrorDomain Code=-999 "cancelled" UserInfo={NSErrorFailingURLStringKey=https://cf-st.sc-cdn.net/aps/bolt/aHR0cHM6Ly9ib2x0LWdjZG4uc2MtY2RuLm5ldC8zL0pla25nMU5PSEV1bkRUd2VWM2lyUD9ibz1FaGdhQUJvQU1nRjlPZ0VFUWdZSXRjdUJtZ1pJQWxBU1lBRSUzRCZ1Yz0xOA._FMpng, NSLocalizedDescription=cancelled, NSErrorFailingURLKey=https://cf-st.sc-cdn.net/aps/bolt/aHR0cHM6Ly9ib2x0LWdjZG4uc2MtY2RuLm5ldC8zL0pla25nMU5PSEV1bkRUd2VWM2lyUD9ibz1FaGdhQUJvQU1nRjlPZ0VFUWdZSXRjdUJtZ1pJQWxBU1lBRSUzRCZ1Yz0xOA._FMpng}
2022-10-07 15:44:51.222122-0300 CameraKitSample[2271:633905] Connection 5: unable to determine interface type without an established connection
2022-10-07 15:44:51.222164-0300 CameraKitSample[2271:633905] Connection 5: unable to determine fallback status without a connection
2022-10-07 15:44:51.222282-0300 CameraKitSample[2271:633905] Task.<3> HTTP load failed, 0/0 bytes (error code: -999 [1:89]) 0 -
Solved the issue!
My mistake.
The documentation says it clearly:
// It's important you start the capture session after starting the CameraKit session // because the CameraKit input and session configures the capture session implicitly and you may run into a // race condition which causes some audio and video output frames to be lost, resulting in a blank preview viewI was starting it before CameraKit.
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