external/libpng-1.6.37/tests/pngstest

   1 #!/bin/sh
   2 #
   3 # Usage:
   4 #
   5 #  tests/pngstest gamma alpha
   6 #
   7 # Run ./pngstest on the PNG files in $srcdir/contrib/testpngs which have the
   8 # given gamma and opacity:
   9 #
  10 #  gamma: one of; linear, 1.8, sRGB, none.
  11 #  alpha: one of; opaque, tRNS, alpha, none.  'none' is equivalent to !alpha
  12 #
  13 # NOTE: the temporary files pngstest generates have the base name gamma-alpha to
  14 # avoid issues with make -j
  15 #
  16 gamma="$1"
  17 shift
  18 alpha="$1"
  19 shift
  20 args=
  21 LC_ALL="C" # fix glob sort order to ASCII:
  22 for f in "${srcdir}/contrib/testpngs/"*.png
  23 do
  24    g=
  25    case "$f" in
  26       *-linear[.-]*)
  27          test "$gamma" = "linear" && g="$f";;
  28
  29       *-sRGB[.-]*)
  30          test "$gamma" = "sRGB" && g="$f";;
  31
  32       *-1.8[.-]*)
  33          test "$gamma" = "1.8" && g="$f";;
  34
  35       *)
  36          test "$gamma" = "none" && g="$f";;
  37    esac
  38
  39    case "$g" in
  40       "")
  41          :;;
  42
  43       *-alpha[-.]*)
  44          test "$alpha" = "alpha" && args="$args $g";;
  45
  46       *-tRNS[-.]*)
  47          test "$alpha" = "tRNS" -o "$alpha" = "none" && args="$args $g";;
  48
  49       *)
  50          test "$alpha" = "opaque" -o "$alpha" = "none" && args="$args $g";;
  51    esac
  52 done
  53 # This only works if the arguments don't contain spaces; they don't.
  54 exec ./pngstest --tmpfile "${gamma}-${alpha}-" --log ${1+"$@"} $args