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Re: How to write an NSImage to a JPEG file
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Re: How to write an NSImage to a JPEG file


  • Subject: Re: How to write an NSImage to a JPEG file
  • From: Craig Hagerman <email@hidden>
  • Date: Fri, 22 Feb 2002 00:51:24 -0500

Shayne,

I was wondering the same thing. No one else has given an answer yet so...

I have just assumed that a cocoa NSImage is analogous to a Java Image (awt
Image or swing IconImage) in that it is read only. If this is not so then
someone PLEASE correct me. Given that I would assume that you must use
quicktime, or even OpenGL (but this seems like overkill) to write the image.
I am just trying to understand this right now myself so I can't give any
concrete guidance. I am now looking through some sample code
(here for example: http://developer.apple.com/samplecode/)
that uses QuickTime in an effort to understand:

1. ...How to use it together with cocoa. (Use an NSMovie / NSMovieView
instead of an NSImage for starters.)

2. ...The quicktime API. Well not really understand (it is pretty HUGE) but
more like get enough of a handle on it to be able to know how to do simple
things.

Can anyone expand on this any more?

Craig Hagerman


on 2/21/02 3:11 PM, Shayne Packer at email@hidden wrote:

> (resubmitted with a subject)
>
> I need to write an NSImage out to a JPEG file.
>
> In looking at the archives, I noticed that on 22 Oct 2001, sunnyvale
> posted this question: "how to save a image in NSImage to pict format file"
> , with this comment: "I can save the NSImage to GIF or JPEG but not PICT".
> I've also seen other posts around this subject.
>
> How can I save it to my new JPEG file?
>
> Are there any settings for the compression quality?
>
> thanks, Shayne
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  • Follow-Ups:
    • Re: How to write an NSImage to a JPEG file
      • From: Scott Anguish <email@hidden>
References: 
 >How to write an NSImage to a JPEG file (From: Shayne Packer <email@hidden>)

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