IOS view Blur Background

1 /**2 * Blur Background3  *4 * @param image requires a blurred image5 * @param blur Gaussian blur value6  *7 * @return8  */9-(UIImage *) Blurryimage: (UIImage *) Image withblurlevel: (cgfloat) BlurTen { One     if((Blur <0.0f) || (Blur >1.0f)) { ABlur =0.5f; -     } -      the     intBoxsize = (int) (Blur * -); -Boxsize-= (boxsize%2) +1; -      -Cgimageref img =image. Cgimage; +      - Vimage_buffer Inbuffer, Outbuffer; + Vimage_error Error; A     void*Pixelbuffer; at      -Cgdataproviderref Inprovider =Cgimagegetdataprovider (IMG); -Cfdataref Inbitmapdata =Cgdataprovidercopydata (inprovider); -      -Inbuffer.width =cgimagegetwidth (IMG); -Inbuffer.height =cgimagegetheight (IMG); inInbuffer.rowbytes =Cgimagegetbytesperrow (IMG); -Inbuffer.data = (void*) cfdatagetbyteptr (inbitmapdata); to      +Pixelbuffer = malloc (Cgimagegetbytesperrow (IMG) *cgimagegetheight (IMG)); -      theOutbuffer.data =Pixelbuffer; *Outbuffer.width =cgimagegetwidth (IMG); $Outbuffer.height =cgimagegetheight (IMG);Panax NotoginsengOutbuffer.rowbytes =Cgimagegetbytesperrow (IMG); -      theError = vimageboxconvolve_argb8888 (&inbuffer, &outbuffer, NULL,0,0, Boxsize, Boxsize, NULL, kvimageedgeextend); +      ACgcolorspaceref ColorSpace =Cgcolorspacecreatedevicergb (); theCgcontextref CTX = cgbitmapcontextcreate (Outbuffer.data, Outbuffer.width, Outbuffer.height,8, Outbuffer.rowbytes, ColorSpace, Cgimagegetbitmapinfo (image. Cgimage)); +      -Cgimageref Imageref =cgbitmapcontextcreateimage (CTX); $UIImage *returnimage =[UIImage imagewithcgimage:imageref]; $      -     // Clean Up - cgcontextrelease (CTX); the cgcolorspacerelease (colorspace); -     Wuyi Free (pixelbuffer); the cfrelease (inbitmapdata); -      Wu cgcolorspacerelease (colorspace); - cgimagerelease (imageref); About      $     returnReturnimage; -}

IOS view Blur Background