Sandy McGuffog sandymc
sandymc
/ CreateTransform.m
Last active
September 3, 2020 23:25
This code snippet shows how to convert an image buffer between color spaces (e.g., transform from ProPhoto to sRGB or whatever) using Apple's new (and entirely undocumented) ColorSyncTransformConvert function. Firstly, a transform is created, then that transform is used to convert an image buffer.
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| const void *keys[] = {kColorSyncProfile, kColorSyncRenderingIntent, kColorSyncTransformTag}; | |
| const void *srcVals[] = {[srcProfile ref], kColorSyncRenderingIntentUseProfileHeader, kColorSyncTransformDeviceToPCS}; | |
| const void *dstVals[] = {[destProfile ref], kColorSyncRenderingIntentUseProfileHeader, kColorSyncTransformPCSToDevice}; | |
| CFDictionaryRef srcDict = CFDictionaryCreate ( | |
| NULL, | |
| (const void **)keys, | |
| (const void **)srcVals, | |
| 3, |