2014/10/15 下午 10:05:04

iphone Programming Glossary: cgimagesourceref

http://stackoverflow.com/questions/10993868/coregraphics-image-resize

WWDC 2011 Session 318 iOS Performance in Depth and uses CoreGraphics to create thumbnails from server hosted images. CGImageSourceRef src CGImageSourceCreateWithURL url NSDictionary options CFDictionaryRef NSDictionary dictionaryWithObject NSNumber numberWithInt.. thumbnail CGImageSourceRelease src But it doesnt work and the docs don't really help. In the iOS docs CGImageSource CGImageSourceRef CGImageSourceCreateThumbnailAtIndex are available in Mac OS X v10.4 or later How can I get this to work EDIT These are the.. v10.4 or later How can I get this to work EDIT These are the compiler errors I'm getting Use of undeclared identifier 'CGImageSourceRef' Use of undeclared identifier 'kCGImageSourceThumbnailMaxPixelSize' Use of undeclared identifier 'src' Implicit declaration..

Extracting images from a PDF

http://stackoverflow.com/questions/2475450/extracting-images-from-a-pdf

0 NULL NULL sourceImage CGImageCreateWithJPEGDataProvider dataProvider decodeValues interpolation renderingIntent CGImageSourceRef cgImageSource CGImageSourceCreateWithDataProvider dataProvider dictionary CGDataProviderRelease dataProvider cgImage sourceImage..

accessing UIImage properties without loading in memory the image

http://stackoverflow.com/questions/4169677/accessing-uiimage-properties-without-loading-in-memory-the-image

to include the ImageIO.framework in your target #import ImageIO ImageIO.h NSURL imageFileURL NSURL fileURLWithPath ... CGImageSourceRef imageSource CGImageSourceCreateWithURL CFURLRef imageFileURL NULL if imageSource NULL Error loading image ... return CGFloat..

Problem setting exif data for an image

http://stackoverflow.com/questions/5125323/problem-setting-exif-data-for-an-image

to a captured image. NSData jpeg AVCaptureStillImageOutput jpegStillImageNSDataRepresentation imageDataSampleBuffer CGImageSourceRef source source CGImageSourceCreateWithData CFDataRef jpeg NULL get all the metadata in the image NSDictionary metadata NSDictionary..

How to write exif metadata to an image (not the camera roll, just a UIImage or JPEG)

http://stackoverflow.com/questions/9006759/how-to-write-exif-metadata-to-an-image-not-the-camera-roll-just-a-uiimage-or-j

the jpeg nsdata and the correspoding dictionary for that image in the mutable cfdictionary. All you have to do now is CGImageSourceRef source CGImageSourceCreateWithData __bridge CFDataRef jpeg NULL CFStringRef UTI CGImageSourceGetType source this is the..

Get Exif data from UIImage - UIImagePickerController

http://stackoverflow.com/questions/9766394/get-exif-data-from-uiimage-uiimagepickercontroller

id image_representation UTI kCGImageSourceTypeIdentifierHint nil create CGImageSource with NSData CGImageSourceRef sourceRef CGImageSourceCreateWithData __bridge CFDataRef adata __bridge CFDictionaryRef sourceOptionsDict get imagePropertiesDictionary..