Swift UIImage崩溃时的快速模糊扩展
我已经为UIImage编写了一个扩展,而在上下文中得到了nil。知道有什么问题吗Swift UIImage崩溃时的快速模糊扩展,swift,uiimage,uikit,Swift,Uiimage,Uikit,我已经为UIImage编写了一个扩展,而在上下文中得到了nil。知道有什么问题吗 public func blur(size: Float) -> UIImage! { let boxSize = size - (size % 2) + 1 let image = self.CGImage let inProvider = CGImageGetDataProvider(image) let height = vImagePixelCount(CGImag
public func blur(size: Float) -> UIImage! {
let boxSize = size - (size % 2) + 1
let image = self.CGImage
let inProvider = CGImageGetDataProvider(image)
let height = vImagePixelCount(CGImageGetHeight(image))
let width = vImagePixelCount(CGImageGetWidth(image))
let rowBytes = CGImageGetBytesPerRow(image)
let inBitmapData = CGDataProviderCopyData(inProvider)
let inData = UnsafeMutablePointer<Void>(CFDataGetBytePtr(inBitmapData))
var inBuffer = vImage_Buffer(data: inData, height: height, width: width, rowBytes: rowBytes)
let outData = malloc(CGImageGetBytesPerRow(image) * CGImageGetHeight(image))
var outBuffer = vImage_Buffer(data: outData, height: height, width: width, rowBytes: rowBytes)
let _ = vImageBoxConvolve_ARGB8888(&inBuffer, &outBuffer, nil, 0, 0, UInt32(boxSize), UInt32(boxSize), nil, vImage_Flags(kvImageEdgeExtend))
let colorSpace = CGColorSpaceCreateDeviceRGB()
let context = CGBitmapContextCreate(outBuffer.data, Int(outBuffer.width), Int(outBuffer.height), 8, outBuffer.rowBytes, colorSpace, CGImageGetBitmapInfo(image).rawValue)
let imageRef = CGBitmapContextCreateImage(context)!
let bluredImage = UIImage(CGImage: imageRef)
free(outData)
return bluredImage
}
public func blur(大小:Float)->UIImage!{
设boxSize=size-(大小%2)+1
让image=self.CGImage
让inProvider=CGImageGetDataProvider(图像)
let height=vImagePixelCount(CGImageGetHeight(图像))
let width=vImagePixelCount(CGImageGetWidth(图像))
让rowBytes=CGImageGetBytesPerRow(图像)
让inBitmapData=CGDataProviderCopyData(inProvider)
设inData=unsafemeutablepointer(CFDataGetBytePtr(inBitmapData))
var inBuffer=vImage_缓冲区(数据:inData,高度:高度,宽度:宽度,行字节:行字节)
let out data=malloc(CGImageGetBytesPerRow(图像)*CGImageGetHeight(图像))
var EXBUFFER=vImage_缓冲区(数据:outData,高度:高度,宽度:宽度,行字节:行字节)
设u=vImageBoxConvolve_argb888(&inBuffer,&Exputffer,nil,0,0,UInt32(boxSize),UInt32(boxSize),nil,vImage_Flags(kvImageEdgeExtend))
让colorSpace=CGColorSpaceCreateDeviceRGB()
让context=CGBitmapContextCreate(exputffer.data,Int(exputffer.width),Int(exputffer.height),8,exputffer.rowBytes,colorSpace,CGImageGetBitmapInfo(image).rawValue)
让imageRef=CGBitmapContextCreateImage(上下文)!
让BluedImage=UIImage(CGImage:imageRef)
免费(outData)
返回模糊图像
}
问题是在CGImage上进行模糊处理,而不是直接在UIImage上进行模糊处理:
extension UIImage {
class func blurEffect(cgImage: CGImageRef) -> UIImage! {
return UIImage(CGImage: cgImage)
}
func blurEffect(boxSize: CGFloat) -> UIImage! {
return UIImage(CGImage: bluredCGImage(boxSize))
}
func bluredCGImage(boxSize: CGFloat) -> CGImageRef! {
return CGImage!.blurEffect(boxSize)
}
}
extension CGImage {
func blurEffect(boxSize: CGFloat) -> CGImageRef! {
let boxSize = boxSize - (boxSize % 2) + 1
let inProvider = CGImageGetDataProvider(self)
let height = vImagePixelCount(CGImageGetHeight(self))
let width = vImagePixelCount(CGImageGetWidth(self))
let rowBytes = CGImageGetBytesPerRow(self)
let inBitmapData = CGDataProviderCopyData(inProvider)
let inData = UnsafeMutablePointer<Void>(CFDataGetBytePtr(inBitmapData))
var inBuffer = vImage_Buffer(data: inData, height: height, width: width, rowBytes: rowBytes)
let outData = malloc(CGImageGetBytesPerRow(self) * CGImageGetHeight(self))
var outBuffer = vImage_Buffer(data: outData, height: height, width: width, rowBytes: rowBytes)
vImageBoxConvolve_ARGB8888(&inBuffer, &outBuffer, nil, 0, 0, UInt32(boxSize), UInt32(boxSize), nil, vImage_Flags(kvImageEdgeExtend))
let colorSpace = CGColorSpaceCreateDeviceRGB()
let context = CGBitmapContextCreate(outBuffer.data, Int(outBuffer.width), Int(outBuffer.height), 8, outBuffer.rowBytes, colorSpace, CGImageGetBitmapInfo(self).rawValue)
let imageRef = CGBitmapContextCreateImage(context)
free(outData)
return imageRef
}
}
扩展UIImage{
类func模糊效果(cgImage:CGImageRef)->UIImage{
返回UIImage(CGImage:CGImage)
}
func模糊效果(boxSize:CGFloat)->UIImage{
返回UIImage(CGImage:bluredCGImage(boxSize))
}
func bluredcimage(boxSize:CGFloat)->CGImageRef{
返回CGImage效果(boxSize)
}
}
扩展CGImage{
func模糊效果(boxSize:CGFloat)->CGImageRef{
设boxSize=boxSize-(boxSize%2)+1
让inProvider=CGImageGetDataProvider(自身)
let height=vImagePixelCount(CGImageGetHeight(自身))
let width=vImagePixelCount(CGImageGetWidth(自))
设rowBytes=CGImageGetBytesPerRow(self)
让inBitmapData=CGDataProviderCopyData(inProvider)
设inData=unsafemeutablepointer(CFDataGetBytePtr(inBitmapData))
var inBuffer=vImage_缓冲区(数据:inData,高度:高度,宽度:宽度,行字节:行字节)
let out data=malloc(cgmagegetbytesperrow(self)*cgmagegetheight(self))
var EXBUFFER=vImage_缓冲区(数据:outData,高度:高度,宽度:宽度,行字节:行字节)
vImageBoxConvolve_argb888(&inBuffer和exputffer、nil、0、UInt32(boxSize)、UInt32(boxSize)、nil、vImage_标志(kvImageEdgeExtend))
让colorSpace=CGColorSpaceCreateDeviceRGB()
让context=CGBitmapContextCreate(exputffer.data,Int(exputffer.width),Int(exputffer.height),8,exputffer.rowBytes,colorSpace,CGImageGetBitmapInfo(self).rawValue)
让imageRef=CGBitmapContextCreateImage(上下文)
免费(outData)
返回imageRef
}
}
问题是在CGImage上进行模糊处理,而不是直接在UIImage上进行模糊处理:
extension UIImage {
class func blurEffect(cgImage: CGImageRef) -> UIImage! {
return UIImage(CGImage: cgImage)
}
func blurEffect(boxSize: CGFloat) -> UIImage! {
return UIImage(CGImage: bluredCGImage(boxSize))
}
func bluredCGImage(boxSize: CGFloat) -> CGImageRef! {
return CGImage!.blurEffect(boxSize)
}
}
extension CGImage {
func blurEffect(boxSize: CGFloat) -> CGImageRef! {
let boxSize = boxSize - (boxSize % 2) + 1
let inProvider = CGImageGetDataProvider(self)
let height = vImagePixelCount(CGImageGetHeight(self))
let width = vImagePixelCount(CGImageGetWidth(self))
let rowBytes = CGImageGetBytesPerRow(self)
let inBitmapData = CGDataProviderCopyData(inProvider)
let inData = UnsafeMutablePointer<Void>(CFDataGetBytePtr(inBitmapData))
var inBuffer = vImage_Buffer(data: inData, height: height, width: width, rowBytes: rowBytes)
let outData = malloc(CGImageGetBytesPerRow(self) * CGImageGetHeight(self))
var outBuffer = vImage_Buffer(data: outData, height: height, width: width, rowBytes: rowBytes)
vImageBoxConvolve_ARGB8888(&inBuffer, &outBuffer, nil, 0, 0, UInt32(boxSize), UInt32(boxSize), nil, vImage_Flags(kvImageEdgeExtend))
let colorSpace = CGColorSpaceCreateDeviceRGB()
let context = CGBitmapContextCreate(outBuffer.data, Int(outBuffer.width), Int(outBuffer.height), 8, outBuffer.rowBytes, colorSpace, CGImageGetBitmapInfo(self).rawValue)
let imageRef = CGBitmapContextCreateImage(context)
free(outData)
return imageRef
}
}
扩展UIImage{
类func模糊效果(cgImage:CGImageRef)->UIImage{
返回UIImage(CGImage:CGImage)
}
func模糊效果(boxSize:CGFloat)->UIImage{
返回UIImage(CGImage:bluredCGImage(boxSize))
}
func bluredcimage(boxSize:CGFloat)->CGImageRef{
返回CGImage效果(boxSize)
}
}
扩展CGImage{
func模糊效果(boxSize:CGFloat)->CGImageRef{
设boxSize=boxSize-(boxSize%2)+1
让inProvider=CGImageGetDataProvider(自身)
let height=vImagePixelCount(CGImageGetHeight(自身))
let width=vImagePixelCount(CGImageGetWidth(自))
设rowBytes=CGImageGetBytesPerRow(self)
让inBitmapData=CGDataProviderCopyData(inProvider)
设inData=unsafemeutablepointer(CFDataGetBytePtr(inBitmapData))
var inBuffer=vImage_缓冲区(数据:inData,高度:高度,宽度:宽度,行字节:行字节)
let out data=malloc(cgmagegetbytesperrow(self)*cgmagegetheight(self))
var EXBUFFER=vImage_缓冲区(数据:outData,高度:高度,宽度:宽度,行字节:行字节)
vImageBoxConvolve_argb888(&inBuffer和exputffer、nil、0、UInt32(boxSize)、UInt32(boxSize)、nil、vImage_标志(kvImageEdgeExtend))
让colorSpace=CGColorSpaceCreateDeviceRGB()
让context=CGBitmapContextCreate(exputffer.data,Int(exputffer.width),Int(exputffer.height),8,exputffer.rowBytes,colorSpace,CGImageGetBitmapInfo(self).rawValue)
让imageRef=CGBitmapContextCreateImage(上下文)
免费(outData)
返回imageRef
}
}
我无法复制您的问题,此代码对我适用。我无法复制您的问题,此代码对我适用。