I am trying to convert .3dl and .cube to Metal Texture on iOS device in Swift language, recently I have found the answer for .cube file in this question and answer:
Init a Metal texture with the type of 3D
class AdobeLUTParser {
static func texture(withContentsOf url: URL, device: MTLDevice) -> MTLTexture? {
let lutString = try! NSString(contentsOf: url, encoding: String.Encoding.utf8.rawValue)
let lines = lutString.components(separatedBy: "\r\n") as [NSString]
var dim = 2
var values: UnsafeMutablePointer<Float>? = nil
var index = 0
for line in lines {
if line.length == 0 { continue; } // skip blanks
let firstChar = line.character(at: 0)
if firstChar < 58 /*':'*/ {
if values == nil {
print("Error: Got data before size in LUT")
break;
}
let numbers = line.components(separatedBy: " ") as [NSString]
if numbers.count == 3 {
let r = numbers[0].floatValue
let g = numbers[1].floatValue
let b = numbers[2].floatValue
let a = Float(1)
values![index * 4 + 0] = r
values![index * 4 + 1] = g
values![index * 4 + 2] = b
values![index * 4 + 3] = a
index += 1
}
} else {
if line.hasPrefix("LUT_3D_SIZE") {
let sizeString = line.components(separatedBy: " ")[1] as NSString
dim = Int(sizeString.intValue)
if dim < 2 || dim > 512 {
print("Error: insane LUT size: \(dim)")
}
let rawPointer = malloc(dim * dim * dim * 4 * MemoryLayout<Float>.size)
values = rawPointer!.bindMemory(to: Float.self, capacity: dim * dim * dim * 4)
} else if line.hasPrefix("LUT_1D_SIZE") {
print("Error: 1D LUTs not supported")
break
}
}
}
if values == nil {
print("Did not parse LUT successfully")
return nil
}
let textureDescriptor = MTLTextureDescriptor()
textureDescriptor.textureType = .type3D
textureDescriptor.pixelFormat = .rgba32Float
textureDescriptor.width = dim
textureDescriptor.height = dim
textureDescriptor.depth = dim
textureDescriptor.usage = .shaderRead
let texture = device.makeTexture(descriptor: textureDescriptor)
texture.replace(region: MTLRegionMake3D(0, 0, 0, dim, dim, dim),
mipmapLevel:0,
slice:0,
withBytes:values!,
bytesPerRow:dim * MemoryLayout<Float>.size * 4,
bytesPerImage:dim * dim * MemoryLayout<Float>.size * 4)
return texture
}
}
But .3dl is different from .cube, I still don't know how to parse the .3dl file and how to Convert .3dl, any one know how to parse .3dl file?
Tolecen
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After took 48MP ProRaw photo,
captureOutput:(AVCapturePhotoOutput *)output didFinishProcessingPhoto
write to photo library use
[PHPhotoLibrary sharedPhotoLibrary] performChangesAndWait:
or
[PHPhotoLibrary sharedPhotoLibrary] performChanges
There is a high probability of failure
No matter use fileURL or [photo fileDataRepresentation]
failure info below
2022-09-28 10:43:57.353815+0800 LUTCamera[2031:218103] [GatekeeperXPC] Error received from proxy factory <PLAssetsdServiceProxyFactory: 0x28190b300> in sendChangesRequest:usingProxyFactory:error:: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.photos.service was interrupted, but the message was sent over an additional proxy and therefore this proxy has become invalid." UserInfo={NSDebugDescription=The connection to service named com.apple.photos.service was interrupted, but the message was sent over an additional proxy and therefore this proxy has become invalid.}
2022-09-28 10:43:57.354114+0800 LUTCamera[2031:218103] [PhotoKit] PhotoKit XPC proxy is invalid. Dropping request on the floor and returning an error: Error Domain=PHPhotosErrorDomain Code=3301 "(null)" (underlying error Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.photos.service was interrupted, but the message was sent over an additional proxy and therefore this proxy has become invalid." UserInfo={NSDebugDescription=The connection to service named com.apple.photos.service was interrupted, but the message was sent over an additional proxy and therefore this proxy has become invalid.})
2022-09-28 10:43:57.359493+0800 LUTCamera[2031:218100] [error] error: XPC: synchronousRemoteObjectProxyWithErrorHandler encountered error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service created from an endpoint was invalidated: failed to check-in, peer may have been unloaded: mach_error=10000003." UserInfo={NSDebugDescription=The connection to service created from an endpoint was invalidated: failed to check-in, peer may have been unloaded: mach_error=10000003.}
2022-09-28 10:43:57.359508+0800 LUTCamera[2031:218257] CoreData: XPC: XPC connection was invalidated
CoreData: error: XPC: synchronousRemoteObjectProxyWithErrorHandler encountered error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service created from an endpoint was invalidated: failed to check-in, peer may have been unloaded: mach_error=10000003." UserInfo={NSDebugDescription=The connection to service created from an endpoint was invalidated: failed to check-in, peer may have been unloaded: mach_error=10000003.}
2022-09-28 10:43:57.473207+0800 LUTCamera[2031:218100] CoreData: XPC: sendMessage: failed #0