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removed CGImage conversion

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This commit is contained in:
Haik Aslanyan
2020-03-09 15:43:09 +04:00
parent 55f0c8aa55
commit fd36eeb795
1 changed files with 4 additions and 12 deletions
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Sources/Internal/RCImageDecoder.swift
+4 -12
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@@ -141,13 +141,8 @@ extension RCImageDecoder {
}
private func fixPerspective(_ data: UnsafeMutablePointer<UInt8>, points: [CIVector], size: Int) throws -> CGImage {
guard
let data = CFDataCreate(nil, data, size * size),
let provider = CGDataProvider(data: data),
let cgImage = CGImage(width: size, height: size, bitsPerComponent: 8, bitsPerPixel: 8, bytesPerRow: size, space: CGColorSpaceCreateDeviceGray(), bitmapInfo: CGBitmapInfo(rawValue: 0), provider: provider, decode: nil, shouldInterpolate: true, intent: CGColorRenderingIntent.defaultIntent) else {
throw RCError.decoding
}
var image = CIImage(cgImage: cgImage, options: [.colorSpace: CGColorSpaceCreateDeviceGray()])
let imageData = Data(bytes: UnsafeRawPointer(data), count: size * size)
var image = CIImage(bitmapData: imageData, bytesPerRow: size, size: CGSize(width: size, height: size), format: .L8, colorSpace: CGColorSpaceCreateDeviceGray())
let transformFilter = CIFilter(name: "CIAffineTransform")!
transformFilter.setValue(image, forKey: "inputImage")
transformFilter.setValue(CGAffineTransform(rotationAngle: CGFloat.pi / 4), forKey: "inputTransform")
@@ -166,11 +161,8 @@ extension RCImageDecoder {
perspectiveFilter.setValue(points[2], forKey: "inputBottomRight")
perspectiveFilter.setValue(points[3], forKey: "inputBottomLeft")
image = perspectiveFilter.outputImage!
let transform = CGAffineTransform.init(scaleX: 1, y: image.extent.width / image.extent.height)
transformFilter.setValue(image, forKey: "inputImage")
transformFilter.setValue(transform, forKey: "inputTransform")
image = transformFilter.outputImage!
guard let renderedImage = context.createCGImage(image, from: image.extent) else { throw RCError.decoding }
let newSize = min(image.extent.width, image.extent.height)
guard let renderedImage = context.createCGImage(image, from: CGRect(origin: .zero, size: CGSize(width: newSize, height: newSize))) else { throw RCError.decoding }
return renderedImage
}