Lists

Terms and Conditions
Lists hosted on this site
Email the Postmaster
Tips for posting to public mailing lists

Re: 16, 32 or 64 bit Bitmap data for a CIImage

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: 16, 32 or 64 bit Bitmap data for a CIImage

Subject: Re: 16, 32 or 64 bit Bitmap data for a CIImage
From: Scott Thompson <email@hidden>
Date: Sun, 19 Mar 2006 07:33:17 -0600


On Mar 18, 2006, at 2:23 PM, Robert Brown wrote:

The problem is, NSBitmapImageRep and NSGraphicsContext only appear to support 8-bit/channel images. How do I get a bitmap that's 16- bit integer or 32- or 64-bit float (ie, the full bit depth of the Core Image system)?

Thanks!

I'm not familiar with a way to do that through an Objective-C API, but you can use Core Graphics directly for the 16 bpp integer and 32 bpp floating point representations. You would call CGBitmapContextCreate with the appropriate settings and then create a CIContext from that.

(see "Supported Pixel Formats" at <http://developer.apple.com/documentation/GraphicsImaging/Conceptual/ drawingwithquartz2d/dq_context/chapter_3_section_4.html>)

Scott

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden



References:  
  >16, 32 or 64 bit Bitmap data for a CIImage (From: Robert Brown <email@hidden>)




Prev by Date:
Re: app controller's dealloc not called

Next by Date:
Re: Embedding a Framework within a Framework

Previous by thread:
Re: 16, 32 or 64 bit Bitmap data for a CIImage

Next by thread:
Embedding a Framework within a Framework

Index(es):

Date
Thread