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2014/10/15 ¤U¤È 10:04:35
iphone Programming Glossary: bitmapbytecountkCGColorSpaceGenericRGB is deprecated on iPhone? http://stackoverflow.com/questions/560254/kcgcolorspacegenericrgb-is-deprecated-on-iphone int pixelsWide int pixelsHigh CGContextRef context NULL CGColorSpaceRef colorSpace void bitmapData int bitmapByteCount int bitmapBytesPerRow bitmapBytesPerRow pixelsWide 4 1 bitmapByteCount bitmapBytesPerRow pixelsHigh colorSpace CGColorSpaceCreateWithName.. CGColorSpaceRef colorSpace void bitmapData int bitmapByteCount int bitmapBytesPerRow bitmapBytesPerRow pixelsWide 4 1 bitmapByteCount bitmapBytesPerRow pixelsHigh colorSpace CGColorSpaceCreateWithName kCGColorSpaceGenericRGB 2 bitmapData malloc bitmapByteCount.. bitmapBytesPerRow pixelsHigh colorSpace CGColorSpaceCreateWithName kCGColorSpaceGenericRGB 2 bitmapData malloc bitmapByteCount 3 if bitmapData NULL fprintf stderr Memory not allocated return NULL context CGBitmapContextCreate bitmapData 4 pixelsWide..
How to pull out the ARGB component from BitmapContext on iPhone? http://stackoverflow.com/questions/561663/how-to-pull-out-the-argb-component-from-bitmapcontext-on-iphone BitmapContext with UIImage and use 'pixelData' as the pointer CGContextRef context NULL CGColorSpaceRef colorSpace int bitmapByteCount int bitmapBytesPerRow bitmapBytesPerRow image.size.width 4 bitmapByteCount bitmapBytesPerRow image.size.height colorSpace.. context NULL CGColorSpaceRef colorSpace int bitmapByteCount int bitmapBytesPerRow bitmapBytesPerRow image.size.width 4 bitmapByteCount bitmapBytesPerRow image.size.height colorSpace CGColorSpaceCreateDeviceRGB pixelData malloc bitmapByteCount unsigned char.. 4 bitmapByteCount bitmapBytesPerRow image.size.height colorSpace CGColorSpaceCreateDeviceRGB pixelData malloc bitmapByteCount unsigned char pixelData is defined in head file context CGBitmapContextCreate pixelData image.size.width image.size.height..
OpenGL ES 2.0 / MonoTouch: Texture is colorized red http://stackoverflow.com/questions/7986153/opengl-es-2-0-monotouch-texture-is-colorized-red CGImage inImage var pixelsWide inImage.Width var pixelsHigh inImage.Height var bitmapBytesPerRow pixelsWide 4 var bitmapByteCount bitmapBytesPerRow pixelsHigh Note implicit colorSpace.Dispose using var colorSpace CGColorSpace.CreateDeviceRGB Allocate.. colorSpace CGColorSpace.CreateDeviceRGB Allocate the bitmap and create context var bitmapData Marshal.AllocHGlobal bitmapByteCount if bitmapData IntPtr.Zero throw new Exception Memory not allocated. var context new CGBitmapContext bitmapData pixelsWide..
Blur an UIImage on change of slider http://stackoverflow.com/questions/8758433/blur-an-uiimage-on-change-of-slider p1 srcData bpp y width x for i 0 i bpp i sums i p2 i gauss_fact k for i 0 i bpp i p3 i sums i gauss_sum size_t bitmapByteCount bpr height Here was the problem.. you had given srcData instead of destData.. Rest all were perfect... CGDataProviderRef.. of destData.. Rest all were perfect... CGDataProviderRef dataProvider CGDataProviderCreateWithData NULL destData bitmapByteCount NULL CGImageRef blurredImageRef CGImageCreate width height CGBitmapContextGetBitsPerComponent context CGBitmapContextGetBitsPerPixel..
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