Re: Decompressing JPEG data into specific format, getting raw pixels
Re: Decompressing JPEG data into specific format, getting raw pixels
- Subject: Re: Decompressing JPEG data into specific format, getting raw pixels
- From: Doug Hill <email@hidden>
- Date: Tue, 15 Aug 2017 10:07:47 -0700
> On Aug 15, 2017, at 9:54 AM, Sean McBride <email@hidden> wrote:
>
> On Tue, 15 Aug 2017 09:41:25 -0700, Doug Hill said:
>
>> Check out CoreImage ColorControls filter, which has a Saturation parameter:
>
> Thanks Doug and Jonathan for the CIImage suggestion, I'll take a closer look.
> But one thing I don't see at all in CIImage.h is how to get an NSData of the
> pixels of a CIImage. There are init methods that take NSData, but nothing I
> see gives NSData.
>
> I should note that I have no need to draw this data whatsoever. I only need
> access to the raw pixels to do some custom processing on.
NSBitmapImageRep can be created from a CIImage, and has methods for creating an
NSData version of the bitmap, or just getting the bitmapData and/or data planes.
Doug
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