dvkch / backlit Goto Github PK

https://developer.apple.com/documentation/sirikit

https://developer.apple.com/documentation/activitykit/displaying-live-data-with-live-activities

It is a possibility that at the beginning of a scan we don't know its final height, cf Sane Get Parameters, parameter lines.

This should not be hard to support in Sane.swift, even image generation should work easily, but having a proper UI will require testing using a real device.

We could define per device presets, shared across iCloud devices.

The main issue with this task is that it would require to find the simplest way to represent selected device options, keeping in mind that some options may not be available up until another one is set to the proper value, or that adjusting an option's value could reset the value of another one.

A "best effort" way to do that would be to :

• save a simple hash of Option # -> Option Value
• restore by setting each option whose value isn't the saved one to the saved value. if by the end of the loop the snapshots don't match, we redo a pass or two. a maximum number of passes could be set to prevent infinitely looping if we cannot recreate the proper settings.

A more precise version of it could be :

• save the list of setting changes that happened, as an array of (Option #, Option Value). optionally this list might be trimable under certain circumstances to prevent it from being extremely long
• restore by reapplying one by one the settings

Notes :

• it could also have the added benefit that we could close a device while not specifically using it for scanning or previewing, using an unnamed preset. we need to figure out the cost of always saving and restoring options in between scans though
• some options could be ignored, for instance the crop settings

Hi @dvkch, want to say thanks on making this app! Just tested it out and works great on my device.

I was wondering if you would potentiall consider releasing this app on the altstore? (https://noah978.gitbook.io/altstore-docs/sources)

Right now, I have to manually compile the app and then reinstall it every 7 days on my device. Altstore could potentially leviate some of that burden.

Thanks!

https://github.com/alexpevzner/sane-airscan

The work has been started to compile the library on macOS, but it requires Avahi and DBus to work. We need to do a port of the library that would use NetServiceBrowser instead of Avahi, and replace the DBus runloop by NSRunLoop on macOS/iOS.

This is a huge undertaking and I will not have the time to work on it just yet, but will keep it in mind for future free times :)

Once the work is done and upstreamed, it should only be a matter of integrating it into Sane-build.rb and Sane.xcframework.

Hi dvkch, is there a way to install this app in my iOS devices without a macOS environment?

You have made the app I was looking for! Only to discover that it's not in the AppStore anymore :(

In some situations, especially on iOS, the device available memory can be maxed out be a large scan. Especially if we scan multiple files, in the current architecture all scans are kept in-memory up until they are saved by the Application.

It should be doable to scan to a file direct, appending data using an NSFileHandle, and generating previews using Data(contentsOf: URL, options: .mappedIfSafe) as the CGImage data provider.

It would be extremely harder though to support exotic image formats like RGB 1bit that require manipulating data that was already scanned.

This is currently not a priority

Maybe using https://github.com/AvdLee/Roadmap ?

There might be a way to do so from the file extension, adding a button that would show DeviceVC for a selected device, and close by returning a given image or NSFileProviderItem