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Merge pull request #1268 from izackp/patch-1 

Fix unsupported colorspace issue.
This commit is contained in:
Konstantinos K. 2015-08-21 18:53:35 +03:00
parent 49f6e532b5 d00d368cdb
commit 5a5c65d799
1 changed files with 9 additions and 5 deletions
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14
SDWebImage/SDWebImageDecoder.m
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@ -29,17 +29,19 @@
size_t width = CGImageGetWidth(imageRef);
size_t height = CGImageGetHeight(imageRef);
// default RGB
CGColorSpaceRef RGBcolorSpace = CGColorSpaceCreateDeviceRGB();
// current
CGColorSpaceModel imageColorSpaceModel = CGColorSpaceGetModel(CGImageGetColorSpace(imageRef));
CGColorSpaceRef colorspaceRef = CGImageGetColorSpace(imageRef);
bool unsupportedColorSpace = (imageColorSpaceModel == 0 || imageColorSpaceModel == -1 || imageColorSpaceModel == kCGColorSpaceModelIndexed);
if (unsupportedColorSpace)
colorspaceRef = CGColorSpaceCreateDeviceRGB();
CGContextRef context = CGBitmapContextCreate(NULL, width,
height,
CGImageGetBitsPerComponent(imageRef),
0,
(imageColorSpaceModel == 0 || imageColorSpaceModel == -1) ? RGBcolorSpace : CGImageGetColorSpace(imageRef),
colorspaceRef,
kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedFirst);
// Draw the image into the context and retrieve the new image, which will now have an alpha layer
@ -47,7 +49,9 @@
CGImageRef imageRefWithAlpha = CGBitmapContextCreateImage(context);
UIImage *imageWithAlpha = [UIImage imageWithCGImage:imageRefWithAlpha];
CGColorSpaceRelease(RGBcolorSpace);
if (unsupportedColorSpace)
CGColorSpaceRelease(colorspaceRef);
CGContextRelease(context);
CGImageRelease(imageRefWithAlpha);