Re: -[CALayer setContents: cvPixelBufferRef ] ?
Re: -[CALayer setContents: cvPixelBufferRef ] ?
- Subject: Re: -[CALayer setContents: cvPixelBufferRef ] ?
- From: "Jonathan del Strother" <email@hidden>
- Date: Thu, 3 Apr 2008 20:28:16 +0100
On Thu, Apr 3, 2008 at 8:23 PM, David Duncan <email@hidden> wrote:
> On Apr 3, 2008, at 11:34 AM, Jonathan del Strother wrote:
>
>
> > CALayer says that 'contents' is "typically a CGImageRef, but may be
> > something else". I (optimistically) tried assigning the
> > CVPixelBufferRef directly to the contents, but apparently that's not
> > included in the mysterious 'something else' list.
> >
>
> Could you point out where it says that?
It's in CALayer.h, just above the 'contents' method declaration.
> > The only way I've found of going from CVPixelBufferRef to CGImageRef
> > is via CIImage, something like the following :
> >
>
>
> If you have a CVPixelBufferRef, you can use the various functions defined
> for a CVPixelBuffer to access the base address, row bytes, width, height and
> other attributes to create a CGImageRef directly from it via
> CGImageCreate().
Even for yuv? I thought CGImageCreate only handled variations on
rgba, but will give it another go...
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