Legacy ImageMagick Discussions Archive

Hi, I need a way to select between using device pngalpha and bmpsep8 for ghostscript when converting eps to png(device=pngalpha) and for other raster formats: jpeg, tiff etc.(device=bmpsep8). The reason I want it like that is I want transparency preserver for png images, and use proper color convertion for other formats.

I tried with delegates:

here i tried png, and rgba as encode values but none did work.

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  <delegate decode="ps:cmyk" encode="rgba" command='"@PSDelegate@" -q -dSAFER -dPARANOIDSAFE -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dEPSCrop -dAlignToPixels=0 -dGridFitTT=0 "-sDEVICE=bmpsep8" -dTextAlphaBits=%u -dGraphicsAlphaBits=%u "-g%s" "-r%s" %s "-sOutputFile=%s" "-f%s" "-f%s"' />

IM selects the delegate without the encode attribute:

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  <delegate decode="ps:cmyk" command='"@PSDelegate@" -q -dSAFER -dPARANOIDSAFE -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dEPSCrop -dAlignToPixels=0 -dGridFitTT=0 "-sDEVICE=bmpsep8" -dTextAlphaBits=%u -dGraphicsAlphaBits=%u "-g%s" "-r%s" %s "-sOutputFile=%s" "-f%s" "-f%s"' />

Is it possible to do it like that? Or I'll need a second installation of IM which is not very desirable in my case.

Try adding -colorspace RGB before your postscript filename on the command line. This forces the pngalpha Ghostscript device assuming it is defined in your delegates.xml configuration file.

Thank you. It really helped me do what I wanted.

Legacy ImageMagick Discussions Archive

delegates.xml decode=ps:cmyk encode=png

delegates.xml decode=ps:cmyk encode=png

Re: delegates.xml decode=ps:cmyk encode=png

Re: delegates.xml decode=ps:cmyk encode=png