Now I try to transform image (jpeg, tiff, gif) to bitmap file. first
I create bitmap CGContextRef and call CGContextDrawIamge to draw
image (jpeg, tiff, gif) into bitmap context and get bitmap context
data, when I save bitmap context data to file, but the file can not
be opened.
Do you have some suggestion or other way to transform image to
bitmap file?
If you want to change the format of an image via Image IO, then you
should look at CGImageDestinationAddImageFromSource() to create the
new image. This will let you convert any image that Image IO can open
to any one that it can save. Similarly if you just have a bitmapped
image you want to save to disk you can use
CGImageDestinationAddImage(). These both require a
CGImageDestinationRef that you can create with any of the
CGImageDestinationCreate*() functions.
--
Reality is what, when you stop believing in it, doesn't go away.
Failure is not an option. It is a privilege reserved for those who try.
David Duncan
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