workbench/libs/png/contrib/testpngs/makepngs.sh

   1 #!/bin/sh
   2 #
   3 # Make a set of test PNG files, MAKEPNG is the name of the makepng executable
   4 # built from contrib/libtests/makepng.c
   5
   6 # Copyright (c) 2015 John Cunningham Bowler
   7
   8 # Last changed in libpng 1.6.20 [December 3, 2015]
   9
  10 # This code is released under the libpng license.
  11 # For conditions of distribution and use, see the disclaimer
  12 # and license in png.h
  13
  14 # The arguments say whether to build all the files or whether just to build the
  15 # ones that extend the code-coverage of libpng from the existing test files in
  16 # contrib/pngsuite.
  17 test -n "$MAKEPNG" || MAKEPNG=./makepng
  18 opts=
  19
  20 mp(){
  21    ${MAKEPNG} $opts $1 "$3" "$4" "$3-$4$2.png"
  22 }
  23
  24 mpg(){
  25    if test "$1" = "none"
  26    then
  27       mp "" "" "$2" "$3"
  28    else
  29       mp "--$1" "-$1" "$2" "$3"
  30    fi
  31 }
  32
  33 mptrans(){
  34    if test "$1" = "none"
  35    then
  36       mp "--tRNS" "-tRNS" "$2" "$3"
  37    else
  38       mp "--tRNS --$1" "-$1-tRNS" "$2" "$3"
  39    fi
  40 }
  41
  42 case "$1" in
  43    --small)
  44       opts="--small";;&
  45
  46    --all|--small)
  47       for g in none sRGB linear 1.8
  48       do
  49          for c in gray palette
  50          do
  51             for b in 1 2 4
  52             do
  53                mpg "$g" "$c" "$b"
  54                mptrans "$g" "$c" "$b"
  55             done
  56          done
  57
  58          mpg "$g" palette 8
  59          mptrans "$g" palette 8
  60
  61          for b in 8 16
  62          do
  63             for c in gray gray-alpha rgb rgb-alpha
  64             do
  65                mpg "$g" "$c" "$b"
  66             done
  67             for c in gray rgb
  68             do
  69                mptrans "$g" "$c" "$b"
  70             done
  71          done
  72       done;;
  73
  74    --coverage)
  75       # Comments below indicate cases known to be required and not duplicated
  76       # in other (required) cases; the aim is to get a minimal set that gives
  77       # the maximum code coverage.
  78       mpg none gray-alpha 8 # required: code coverage, sRGB opaque component
  79       mpg none palette 8 # required: basic palette read
  80       mpg 1.8 gray 2 # required: tests gamma threshold code
  81       mpg 1.8 palette 2 # required: code coverage
  82       mpg 1.8 palette 4 # required: code coverage
  83       mpg 1.8 palette 8 # error limits only
  84       mpg linear palette 8 # error limits only
  85       mpg linear rgb-alpha 16 # error limits only
  86       mpg sRGB palette 1 # required: code coverage
  87       mpg sRGB rgb-alpha 16 # required: code coverage: pngread.c:2422 untested
  88       :;;
  89
  90    *)
  91       echo "$0 $1: unknown argument, usage:" >&2
  92       echo "  $0 [--all|--coverage|--small]" >&2
  93       exit 1
  94 esac