How to use CameraFeed / should it work?

aXu_AP

I'm trying to get access to device camera for my current project, and I found that I need to use CameraFeed for that. However, documentation is really lacking on this area. I also found multiple q/a where either there isn't an answer, or the asker already has an idea how to use it (but no code examples). I've seen posts that tell that it isn't implemented on most platforms, but I'm unsure if this is up to date information. Docs do not have mention about that, and github didn't have any open issues either.

So, 2 questions. 1. How to get it work? Here's what I've tried:

extends Sprite

func _ready() -> void:
	var camera = CameraFeed.new()
	CameraServer.add_feed(camera)
	var tex = CameraTexture.new()
	tex.camera_feed_id = camera.get_id()
	tex.camera_is_active = true
	texture = tex

I'm aware that I should get the Y and CbCr channels and convert to rgb. However, I'd be happy to see any sort of output for starters, then work out the details.

What are the supported platforms for camera access?

Using Godot 3.4 / Windows 10

Calinou

Camera access isn't supported on Windows or Linux yet: https://github.com/godotengine/godot/pull/49763

aXu_AP

Thank you. It seems that I didn't search good enough as I did not find that pr nor this issue. I guess I'll shelve the project idea until HTML5 support comes, as mobile/web export was crucial for it to work.

collectivenectar

I am also interested in this information, I'm working on something for ios.

https://github.com/godotengine/godot-ios-plugins is what I was referred to, last update 5 months ago and works on 3.4 stable.

Documentation there has nothing, docs at: https://docs.godotengine.org/en/stable/classes/class_cameraserver.html describe no process of adding feeds to camera server. There's this PR: https://github.com/godotengine/godot/pull/10643 related somewhat, and discussed iOS but it seems to indicate that camerafeeds are automatically added for iOS, the same for webcams in OSX, so I should be able to use something like:

if CameraServer.get_feed_count() > 0: var feeds : Array = CameraServer.feeds() var feed1 = feeds[0]

This should allow me to see if there front or back facing camera feeds and what they are named? I guess?

but this is as far as I got, I'm pretty new to programming so I don't know what to do with this information lol. What do I do with a feed? Put it in worldenvironment? do I need to convert from ycbcr to rgba? Nothing is described so it'd be great to have a process, I'd be down to submit something for documentation if we can get all the answers in one place.

I've asked in godot discord but no response, aside from a recommendation to look into bastian olijs arkit plugin.

There is also photo_picker, but that will just be an annoyance to the user to have to leave the app to take a photo.

aXu_AP

From what I have gathered, you need to make CameraTexture and set its camera_feed_id to whichever feed you need and activate the feed. So, continuing your example:

if CameraServer.get_feed_count() > 0:
    var feeds : Array = CameraServer.feeds()
    var feed1 = feeds[0]
    var tex = CameraTexture.new()
    tex.camera_feed_id = feed1.get_id() # I guess it's simply 0 but it could be some unique id
    tex.camera_is_active = true

That is, I'm presuming the logic is similiar to ViewportTexture. However, I can be absolutely wrong, as I didn't find any documentation how to use these classes.