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https://git.code.sf.net/p/libpng/code.git
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c2a8a01b2a
This patch adds code to 'makepng' to allow the generation of smaller images that also give better test case coverage. It also adds copyright and licence to the generated images, reflecting the fact that they are original works of the author of the code. The licence used is the Creative Commons Public Domain one, appropriate to a non-source-code work. The resultant image were used to generate the updated pngstest-errors.h file in a prior commit. Signed-off-by: John Bowler <jbowler@acm.org>
72 lines
1.9 KiB
Bash
Executable File
72 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# Make a set of test PNG files, MAKEPNG is the name of the makepng executable
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# built from contrib/libtests/makepng.c
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#
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# The arguments say whether to build all the files or whether just to build the
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# ones that extend the code-coverage of libpng from the existing test files in
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# contrib/pngsuite.
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test -n "$MAKEPNG" || MAKEPNG=./makepng
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opts=
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mp(){
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${MAKEPNG} $opts $1 "$3" "$4" "$3-$4$2.png"
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}
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mpg(){
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if test "$1" = "none"
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then
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mp "" "" "$2" "$3"
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else
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mp "--$1" "-$1" "$2" "$3"
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fi
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}
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case "$1" in
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--small)
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opts="--small";;&
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--all|--small)
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for g in none sRGB linear 1.8
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do
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for c in gray palette
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do
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for b in 1 2 4
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do
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mpg "$g" "$c" "$b"
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done
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done
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mpg "$g" palette 8
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for c in gray gray-alpha rgb rgb-alpha
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do
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for b in 8 16
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do
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mpg "$g" "$c" "$b"
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done
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done
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done;;
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--coverage)
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# Comments below indicate cases known to be required and not duplicated
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# in other (required) cases; the aim is to get a minimal set that gives
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# the maxium code coverage.
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mpg none gray-alpha 8 # required: code coverage, sRGB opaque component
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mpg none palette 8 # required: basic palette read
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mpg 1.8 gray 2 # required: tests gamma threshold code
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mpg 1.8 palette 2 # required: code coverage
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mpg 1.8 palette 4 # required: code coverage
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mpg 1.8 palette 8 # error limits only
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mpg linear palette 8 # error limits only
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mpg linear rgb-alpha 16 # error limits only
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mpg sRGB palette 1 # required: code coverage
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mpg sRGB rgb-alpha 16 # required: code coverage: pngread.c:2422 untested
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:;;
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*)
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echo "$0 $1: unknown argument, usage:" >&2
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echo " $0 [--all|--coverage|--small]" >&2
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exit 1
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esac
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