The filtr from danlozano

Info request about fcube files

The data inside is stored as binary
How to generate this file from a .cube / .3dl or other lut plain text format?

Can you implement a class to load .cube files?

Throws NSUnknownKeyException on iOS

Given the following code:

if let lutImage = UIImage(named: "Cantina-64.png") {
    if let lutData64 = LUTConverter.cubeDataForLut64(lutImage: lutImage) {

        let effectFilter = EffectFilter(customFilter: lutData64, withDimension: .sixtyFour)
        effectFilter.inputIntensity = 0.7

        let filterStack = FilterStack()
        filterStack.effectFilter = effectFilter
        
        if let image = preview.image {

            // the following line throws
            let filteredImage = Filtr.process(inputImage: image, filterStack: filterStack)

            // line never reached
            preview.image = filteredImage
        }

    }
}

It throws the following stack trace:

2019-05-27 20:10:01.548795-0300 florapp[96447:18261345] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<Filtr.EffectFilter 0x60000022f200> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key inputImage.'
*** First throw call stack:
(
	0   CoreFoundation                      0x0000000109c3d29b __exceptionPreprocess + 331
	1   libobjc.A.dylib                     0x00000001086c9735 objc_exception_throw + 48
	2   CoreFoundation                      0x0000000109c3ce09 -[NSException raise] + 9
	3   CoreImage                           0x000000010a88c78c -[CIFilter setValue:forUndefinedKey:] + 136
	4   Foundation                          0x00000001080f60b4 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 292
	5   Filtr                               0x000000010806bb44 $S5FiltrAAV7process33_1FFDDA8B5D37E087EDC205781D24F5D5LL_7filtersSo7CIImageCSgAG_SaySo8CIFilterCGtFZ + 548
	6   Filtr                               0x000000010806b867 $S5FiltrAAV7process10inputImage11filterStackSo7UIImageCSgAG_AA06FilterF0CtFZ + 135
	7   florapp                             0x0000000107d5a4ff $S7florapp14ViewControllerC5applyyyypF + 1679
	8   florapp                             0x0000000107d5ab5c $S7florapp14ViewControllerC5applyyyypFTo + 76
	9   UIKitCore                           0x0000000111e6c7c3 -[UIApplication sendAction:to:from:forEvent:] + 83
	10  UIKitCore                           0x0000000111edbb58 __45-[_UIButtonBarTargetAction _invoke:forEvent:]_block_invoke + 154
	11  UIKitCore                           0x0000000111edba91 -[_UIButtonBarTargetAction _invoke:forEvent:] + 152
	12  UIKitCore                           0x0000000111e6c7c3 -[UIApplication sendAction:to:from:forEvent:] + 83
	13  UIKitCore                           0x0000000111fa4e85 -[UIControl sendAction:to:forEvent:] + 67
	14  UIKitCore                           0x0000000111fa51a2 -[UIControl _sendActionsForEvents:withEvent:] + 450
	15  UIKitCore                           0x0000000111fa40e6 -[UIControl touchesEnded:withEvent:] + 583
	16  UIKitCore                           0x000000011267f334 -[UIWindow _sendTouchesForEvent:] + 2729
	17  UIKitCore                           0x0000000112680a30 -[UIWindow sendEvent:] + 4080
	18  UIKitCore                           0x0000000111e86e10 -[UIApplication sendEvent:] + 352
	19  UIKitCore                           0x0000000111dbf0d0 __dispatchPreprocessedEventFromEventQueue + 3024
	20  UIKitCore                           0x0000000111dc1cf2 __handleEventQueueInternal + 5948
	21  CoreFoundation                      0x0000000109ba0b31 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
	22  CoreFoundation                      0x0000000109ba03a3 __CFRunLoopDoSources0 + 243
	23  CoreFoundation                      0x0000000109b9aa4f __CFRunLoopRun + 1263
	24  CoreFoundation                      0x0000000109b9a221 CFRunLoopRunSpecific + 625
	25  GraphicsServices                    0x000000010f7211dd GSEventRunModal + 62
	26  UIKitCore                           0x0000000111e6b115 UIApplicationMain + 140
	27  florapp                             0x0000000107d5d057 main + 71
	28  libdyld.dylib                       0x000000010c1ea551 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

There's nothing in my storyboard with inputImage (which is the common reason why this error shows up)
After doing some digging I found sometimes you need to use dynamic var instead of let but all my intents fixed nothing.

Any tips?

EDIT:
It even fails using let effectFilter = EffectFilter(type: .color3) (custom filters aren't the problem)

Performance improvements?

Filter.process() whether using a built-in type or a custom type, takes around ~3s to execute.

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Info request about fcube files

Throws NSUnknownKeyException on iOS

Performance improvements?

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