Message-ID:	<35FE2CA2.5E93@ns.sympatico.ca>
From:	Dave Nugent <dave DOT nugent AT ns DOT sympatico DOT ca>
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Subject:	Help: Converting 24bit bitmap to seperate R,G,B files using Allegro?
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Date:	Thu, 11 Feb 1999 22:47:04 GMT
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hello, can anyone tell me if this can be done in Allegro?

Preface: I am trying to write a program that will send an
	 image to a Magicard 300 (tri-sublimation) printer.
	 It uses a film process with a Red, Green and
	 Blue film.  I captured the output from another
   	 program that goes to the printer and discovered that
	 I need to send 3 bitmaps to this printer.  1 Red,
	 1 Green and 1 Blue.  

I want to be able to take a 24 bit color bitmap, and create
3 seperate files from it, 1 for Red, Green and Blue.  The
3 images I saw going to the printer look almost identical
except for shading.  What I noticed is that the file going
to the printer consists of 3 bitmaps in it, Each pixel is 
1 byte (8bit color) (because size of bitmap Xsize x Ysize 
* (3 layers) = filesize.

Is there a command in Allegro that will take my 24bit
color file and convert it to 3 seperate files?  One other
thing I noticed in the capture is that there is NO
palette information going to this printer???  Just the
actual image info.. Is there a standard RGB palette? Or
do I need to find out what this printer uses?

Appreciate any info or suggestions.
Thanks!
Dave.

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