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xterm SIXEL test #2
Posted by Anonymous on Tue 3rd Jan 2023 13:50
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  1. #!/usr/bin/ksh93
  2.  
  3. #
  4. # SIXEL test #2
  5. #
  6. # Written by Roland Mainz <roland.mainz@nrubsig.org>
  7. # Use within an XTERM started with xterm -ti vt340 -bc
  8. #
  9.  
  10. builtin cat
  11.  
  12. typeset infile="/usr/lib/x86_64-linux-gnu/perl5/5.32/Tk/demos/images/teapot.ppm"
  13. typeset out
  14.  
  15. #
  16. # Note that the shell pipeline runs in parallel.
  17. # so output of ppmquant can interfere with
  18. # data written to the terminla while in SIXEL mode,
  19. # causing artifacts
  20. # The workaround is to write the data into the "out" variable,
  21. # and then send them to the terminal/stdout when the pipeline is done
  22. #
  23. out="${
  24.         cat "$infile" | \
  25.         ppmquant 256 | \
  26.         { printf "\EPq" ; ppmtosixel ; printf "\E\\" ; } ;
  27.         }"
  28.        
  29. printf '%s\n' "$out"
  30.  
  31. # EOF.

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