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PPMTOLSS16(1)									    PPMTOLSS16(1)

       ppmtolss16 -- Convert a PPM to an LSS16 image

       ppmtolss16 [		  #rrggbb=i	       ...]  [< input.ppm]  [> output.rle]

       This manual page documents briefly the ppmtolss16 command.

       The  ppmtolss16 program converts a "raw" PPM file with max 16 colors to a simple RLE-based

       simple RLE-based format

       unint32 0x1413f3d   magic (littleendian)
       unint16 xsize	   littleendian
       unint15 ysize	   littleendian
       16 x unint8 r,g,b   color map

       Color map is in 6-bit format (each byte is 0..63)

       Then, a sequence of nybbles:

       N   ... if N is != previous pixel, one pixel of color N, otherwise  run	sequence  follows

       M   ... if M > 0 then run length is M+1, otherwise run sequence is encoded in two nybbles,
       littleendian, +17

       The nybble sequences are on a per-row basis, runs may not extend across rows and  odd-nyb-
       ble rows are zero-padded.

       At the start of a row, the "previous pixel" is assumed to be zero.

       A summary of options is included below.

       #rrggbb=i Specify that the color #rrggbb (hex) should be assigned index i (decimal).

       This program cannot handle comments in the header, nor "plain" ppm format.


       This  manual page was compiled by dann frazier <dannf@debian.org> for the Debian GNU/Linux
       system (but may be used by others).  Most of the content was written by H. Peter Anvin.

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