* texsync'd linux ConTeXt png error
@ 2005-06-07 21:27 Stuart Jansen
2005-06-07 21:39 ` Taco Hoekwater
2005-06-08 7:34 ` Hans Hagen
0 siblings, 2 replies; 5+ messages in thread
From: Stuart Jansen @ 2005-06-07 21:27 UTC (permalink / raw)
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I'm using the latest texsync'd version of ConTeXt on 32bit and 64bit
linux. Looks like either ConTeXt or pdfetex can't handle PNG's with an
alpha channel.
PNG image data, 8-bit/color RGB, non-interlaced <-- works fine
PNG image data, 8-bit/color RGBA, non-interlaced <-- corrupt pdf
PNG image data, 8-bit gray+alpha, non-interlaced <-- following error:
---
libpng warning: Ignoring bad adaptive filter type
libpng warning: Ignoring bad adaptive filter type
libpng warning: Ignoring bad adaptive filter type
---
repeated ad nauseum
(To benefit anyone coming across this message in the archives:)
As a work around, assuming you don't need the alpha, the image can be
converted to RGB in The Gimp using Layers > Flatten Image.
Alternatively, using Image Magick, the command would be
convert image.png png24:image-new.png
--
Stuart Jansen <sjansen@gurulabs.com>
Guru Labs, L.C.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: texsync'd linux ConTeXt png error
2005-06-07 21:27 texsync'd linux ConTeXt png error Stuart Jansen
@ 2005-06-07 21:39 ` Taco Hoekwater
2005-06-07 22:01 ` Stuart Jansen
2005-06-08 7:34 ` Hans Hagen
1 sibling, 1 reply; 5+ messages in thread
From: Taco Hoekwater @ 2005-06-07 21:39 UTC (permalink / raw)
Sounds like a bug in pdftex. What does texexec -- version
report? (There is a known bug with pdtex 1.20a, I think)
Taco
Stuart Jansen wrote:
> ---
> libpng warning: Ignoring bad adaptive filter type
> libpng warning: Ignoring bad adaptive filter type
> libpng warning: Ignoring bad adaptive filter type
> ---
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: texsync'd linux ConTeXt png error
2005-06-07 21:27 texsync'd linux ConTeXt png error Stuart Jansen
2005-06-07 21:39 ` Taco Hoekwater
@ 2005-06-08 7:34 ` Hans Hagen
1 sibling, 0 replies; 5+ messages in thread
From: Hans Hagen @ 2005-06-08 7:34 UTC (permalink / raw)
Stuart Jansen wrote:
> I'm using the latest texsync'd version of ConTeXt on 32bit and 64bit
> linux. Looks like either ConTeXt or pdfetex can't handle PNG's with an
> alpha channel.
>
> PNG image data, 8-bit/color RGB, non-interlaced <-- works fine
> PNG image data, 8-bit/color RGBA, non-interlaced <-- corrupt pdf
> PNG image data, 8-bit gray+alpha, non-interlaced <-- following error:
> ---
> libpng warning: Ignoring bad adaptive filter type
> libpng warning: Ignoring bad adaptive filter type
> libpng warning: Ignoring bad adaptive filter type
> ---
> repeated ad nauseum
>
> (To benefit anyone coming across this message in the archives:)
> As a work around, assuming you don't need the alpha, the image can be
> converted to RGB in The Gimp using Layers > Flatten Image.
> Alternatively, using Image Magick, the command would be
> convert image.png png24:image-new.png
i will update the binaries soon, there has been some fixes and extensions to
pdftex and there will be a new release
Hans
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2005-06-07 21:27 texsync'd linux ConTeXt png error Stuart Jansen
2005-06-07 21:39 ` Taco Hoekwater
2005-06-07 22:01 ` Stuart Jansen
2005-06-08 6:58 ` Taco Hoekwater
2005-06-08 7:34 ` Hans Hagen
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