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2014/10/15 ¤U¤È 10:05:00
iphone Programming Glossary: cgbitmapcontextcreateimageResizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage imageRef alphaInfo CGContextDrawImage bitmap CGRectMake 0 0 width height imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage result UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return.. 180. CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale sizeof uint32_t colorSpace kCGBitmapByteOrder32Little kCGImageAlphaNoneSkipLast CGImageRef image CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace UIImage resultUIImage UIImage imageWithCGImage..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return..
Rounded UIView using CALayers - only some corners - How? http://stackoverflow.com/questions/2264083/rounded-uiview-using-calayers-only-some-corners-how context CGContextClip context CGContextDrawImage context rect img.CGImage CGImageRef imageMasked CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace img release return UIImage imageWithCGImage..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview of the main view bitmap content and then release that bitmap context CGImageRef bitmapContext CGBitmapContextCreateImage context CGContextRelease context convert the finished resized image to a UIImage UIImage theImage UIImage..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload self.CGImage break And now we just create a new UIImage from the drawing context CGImageRef cgimg CGBitmapContextCreateImage ctx UIImage img UIImage imageWithCGImage cgimg CGContextRelease ctx CGImageRelease cgimg return img..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage imageRef 4 width CGImageGetColorSpace imageRef alphaInfo CGContextDrawImage bitmap CGRectMake 0 0 width height imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage result UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return result QUESTION How do I RESIZE a UIImage pulled from the Camera.. targetWidth targetHeight CGContextRotateCTM bitmap radians 180. CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return newImage This will resize your image and rotate it to the..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale CGBitmapContextCreate result m_width m_height 8 m_width sizeof uint32_t colorSpace kCGBitmapByteOrder32Little kCGImageAlphaNoneSkipLast CGImageRef image CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace UIImage resultUIImage UIImage imageWithCGImage image CGImageRelease image free m_imageData make..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees bitmap radians 90 CGContextTranslateCTM bitmap 0 targetHeight CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return newImage iphone uikit uiimage core graphics rotation ..
Rounded UIView using CALayers - only some corners - How? http://stackoverflow.com/questions/2264083/rounded-uiview-using-calayers-only-some-corners-how w h addRoundedRectToPath context rect 50 1 CGContextClosePath context CGContextClip context CGContextDrawImage context rect img.CGImage CGImageRef imageMasked CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace img release return UIImage imageWithCGImage imageMasked Don't forget that you'll need to get the..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview context CGContextDrawPath context kCGPathFill Create CGImageRef of the main view bitmap content and then release that bitmap context CGImageRef bitmapContext CGBitmapContextCreateImage context CGContextRelease context convert the finished resized image to a UIImage UIImage theImage UIImage imageWithCGImage bitmapContext image is retained by the..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage CGImageGetColorSpace imageRef alphaInfo CGContextDrawImage bitmap CGRectMake 0 0 width height imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage result UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return result QUESTION How.. bitmap radians 180. CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return newImage This will..
Can I edit the pixels of the UIImage's property CGImage http://stackoverflow.com/questions/1281210/can-i-edit-the-pixels-of-the-uiimages-property-cgimage free m_Bits UIImage doProcess CGPoint pt just a example unsigned char ppxl m_Bits ... do something... CGImageRef imRef CGBitmapContextCreateImage mContext return UIImage imageWithCGImage imRef And preProcess and postProcess are called just once. iphone cocoa cocoa..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale m_height 8 m_width sizeof uint32_t colorSpace kCGBitmapByteOrder32Little kCGImageAlphaNoneSkipLast CGImageRef image CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace UIImage resultUIImage UIImage imageWithCGImage image CGImageRelease..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees bitmap 0 targetHeight CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef ref CGBitmapContextCreateImage bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return newImage iphone..
iPhone development: pointer being freed was not allocated http://stackoverflow.com/questions/1424210/iphone-development-pointer-being-freed-was-not-allocated AvatarView drawRect AvatarView overlayPNG UIImageUtility createMaskOf UIGraphicsGetImageFromCurrentImageContext CGBitmapContextCreateImage create_bitmap_data_provider malloc malloc_zone_malloc and i really can't understand what i am doing wrong. here's the code.. CGContextDrawImage context2 CGRectMake 0 0 source.size.width source.size.height original.CGImage CGImageRef unmasked CGBitmapContextCreateImage context2 const float myMaskingColorsFrameColor 6 1 256 1 256 1 256 CGImageRef mask CGImageCreateWithMaskingColors unmasked..
How do I create/render a UIImage from a 3D transformed UIImageView? http://stackoverflow.com/questions/1949003/how-do-i-create-render-a-uiimage-from-a-3d-transformed-uiimageview imageRef 8 CGImageGetBytesPerRow imageRef CGImageGetColorSpace imageRef kCGImageAlphaPremultipliedLast imageRef CGBitmapContextCreateImage ctx UIImage rawImage UIImage imageWithCGImage imageRef CGContextRelease ctx free inputData free outputData return rawImage..
Rounded UIView using CALayers - only some corners - How? http://stackoverflow.com/questions/2264083/rounded-uiview-using-calayers-only-some-corners-how 1 CGContextClosePath context CGContextClip context CGContextDrawImage context rect img.CGImage CGImageRef imageMasked CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace img release return UIImage imageWithCGImage imageMasked..
http://stackoverflow.com/questions/262156/uiimage-rounded-corners of the main view bitmap content and then release that bitmap context CGImageRef mainViewContentBitmapContext CGBitmapContextCreateImage mainViewContentContext CGContextRelease mainViewContentContext CGImageRef maskImage UIImage imageNamed @ Mask.png CGImage..
http://stackoverflow.com/questions/3841642/curve-text-on-existing-circle strlen menuItemTextChar CGContextRestoreGState context totalRotation perSectionDegrees CGImageRef contextImage CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace return UIImage imageWithCGImage contextImage These are the.. string text atAngle angle withRadius textRadius angle angleStep CGContextRestoreGState context CGImageRef contextImage CGBitmapContextCreateImage context CGContextRelease context CGColorSpaceRelease colorSpace self saveImage UIImage imageWithCGImage contextImage withName..
http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview Create CGImageRef of the main view bitmap content and then release that bitmap context CGImageRef bitmapContext CGBitmapContextCreateImage context CGContextRelease context convert the finished resized image to a UIImage UIImage theImage UIImage imageWithCGImage..
layer.renderInContext doesn't take layer.mask into account? http://stackoverflow.com/questions/4896296/layer-renderincontext-doesnt-take-layer-mask-into-account context ctm CGContextDrawImage context CGRectMake 0 0 cWidth cHeight mosaicLayer.image.CGImage CGImageRef mergeResult CGBitmapContextCreateImage context saver UIImage alloc initWithCGImage mergeResult CGContextRelease context CGImageRelease mergeResult UIImageWriteToSavedPhotosAlbum..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload self.size.height self.CGImage break And now we just create a new UIImage from the drawing context CGImageRef cgimg CGBitmapContextCreateImage ctx UIImage img UIImage imageWithCGImage cgimg CGContextRelease ctx CGImageRelease cgimg return img @end share improve..
iOS CVImageBuffer distorted from AVCaptureSessionDataOutput with AVCaptureSessionPresetPhoto http://stackoverflow.com/questions/6540710/ios-cvimagebuffer-distorted-from-avcapturesessiondataoutput-with-avcapturesessio bufferHeight 8 bytesPerRow colorSpace kCGBitmapByteOrder32Little kCGImageAlphaPremultipliedFirst CGImageRef cgImage CGBitmapContextCreateImage context UIImage anImage UIImage imageWithCGImage cgImage This shows an undistorted video frame. I've done a bunch of searching..
Is programmatically inverting the colors of an image possible? http://stackoverflow.com/questions/6672517/is-programmatically-inverting-the-colors-of-an-image-possible 2 b linePointer 3 255 linePointer 4 get a CG image from the context wrap that into a UIImage CGImageRef cgImage CGBitmapContextCreateImage context UIImage returnImage UIImage imageWithCGImage cgImage clean up CGImageRelease cgImage CGContextRelease context free..
iPhone Watermark on recorded Video. http://stackoverflow.com/questions/7205820/iphone-watermark-on-recorded-video width height 8 bytesPerRow colorSpace kCGBitmapByteOrder32Little kCGImageAlphaPremultipliedFirst CGImageRef newImage CGBitmapContextCreateImage newContext CGContextRelease newContext CGColorSpaceRelease colorSpace CVPixelBufferUnlockBaseAddress imageBuffer 0 CVBufferRelease..
Make Background of UIView a Gradient Without Sub Classing http://stackoverflow.com/questions/844710/make-background-of-uiview-a-gradient-without-sub-classing myGradient CGPointMake 0.0f 0.0f CGPointMake 320.0f 480.0f 0 Create a CGImage from context CGImageRef cgImage CGBitmapContextCreateImage bitmapContext Create a UIImage from CGImage UIImage uiImage UIImage imageWithCGImage cgImage Release the CGImage CGImageRelease..
http://stackoverflow.com/questions/962827/uiimage-shadow-trouble CGContextClip imageContext CGContextDrawImage imageContext CGRectMake 0 0 w h source.CGImage CGImageRef imageMasked CGBitmapContextCreateImage imageContext CGContextRelease imageContext CGColorSpaceRelease colorSpace return UIImage imageWithCGImage imageMasked addRoundedRectToPath..
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