80 lines
3 KiB
Ruby
80 lines
3 KiB
Ruby
require 'formula'
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class Jbig2enc < Formula
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homepage 'https://github.com/agl/jbig2enc'
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url 'https://github.com/agl/jbig2enc.git',
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:revision => '17b36fad1e64a378f11eb934e8ca25f4b0008a4f'
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version '0.27-17b36fa'
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depends_on 'leptonica'
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depends_on 'libtiff'
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depends_on 'jpeg'
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def patches
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# jbig2enc hardcodes the include and libraries paths.
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# Fixing them up for Homebrew
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# Also contains a patch to pdf.py that retains DPI:
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# https://github.com/agl/jbig2enc/issues/15
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DATA
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end
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def install
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system "make"
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bin.install 'jbig2', 'pdf.py'
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lib.install 'libjbig2enc.a'
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end
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end
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__END__
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diff --git a/Makefile b/Makefile
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index dbb4556..aac8101 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -1,11 +1,11 @@
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CC=g++
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-LEPTONICA=../leptonica-1.68
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+LEPTONICA=`brew --prefix`/include/leptonica
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# For example, a fink MacOSX install:
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# EXTRA=-I/sw/include/ -I/sw/include/libpng -I/sw/include/libjpeg -L/sw/lib
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-CFLAGS=-I${LEPTONICA}/src -Wall -I/usr/include -L/usr/lib -O3 ${EXTRA}
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+CFLAGS=-I${LEPTONICA} -Wall -I`brew --prefix`/include -L`brew --prefix`/lib -L/usr/X11/lib -O3 ${EXTRA}
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jbig2: libjbig2enc.a jbig2.cc
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- $(CC) -o jbig2 jbig2.cc -L. -ljbig2enc ${LEPTONICA}/src/.libs/liblept.a $(CFLAGS) -lpng -ljpeg -ltiff -lm -lz
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+ $(CC) -o jbig2 jbig2.cc -L. -ljbig2enc `brew --prefix`/lib/liblept.a $(CFLAGS) -lpng -ljpeg -ltiff -lm -lz
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libjbig2enc.a: jbig2enc.o jbig2arith.o jbig2sym.o
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ar -rcv libjbig2enc.a jbig2enc.o jbig2arith.o jbig2sym.o
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diff --git a/pdf.py b/pdf.py
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index cd37c9f..4b4a8e8 100644
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--- a/pdf.py
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+++ b/pdf.py
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@@ -11,7 +11,7 @@ import os
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# Run ./jbig2 -s -p <other options> image1.jpeg image1.jpeg ...
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# python pdf.py output > out.pdf
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-dpi = 600
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+#dpi = 600
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class Ref:
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def __init__(self, x):
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@@ -121,16 +121,16 @@ def main(symboltable='symboltable', pagefiles=glob.glob('page-*')):
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except IOError:
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sys.stderr.write("error reading page file %s\n"% p)
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continue
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- (width, height) = struct.unpack('>II', contents[11:19])
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+ (width, height,xres,yres) = struct.unpack('>IIII', contents[11:27])
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xobj = Obj({'Type': '/XObject', 'Subtype': '/Image', 'Width':
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str(width), 'Height': str(height), 'ColorSpace': '/DeviceGray',
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'BitsPerComponent': '1', 'Filter': '/JBIG2Decode', 'DecodeParms':
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' << /JBIG2Globals %d 0 R >>' % symd.id}, contents)
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- contents = Obj({}, 'q %f 0 0 %f 0 0 cm /Im1 Do Q' % (float(width * 72) / dpi, float(height * 72) / dpi))
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+ contents = Obj({}, 'q %f 0 0 %f 0 0 cm /Im1 Do Q' % (float(width * 72) / xres, float(height * 72) / yres))
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resources = Obj({'ProcSet': '[/PDF /ImageB]',
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'XObject': '<< /Im1 %d 0 R >>' % xobj.id})
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page = Obj({'Type': '/Page', 'Parent': '3 0 R',
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- 'MediaBox': '[ 0 0 %f %f ]' % (float(width * 72) / dpi, float(height * 72) / dpi),
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+ 'MediaBox': '[ 0 0 %f %f ]' % (float(width * 72) / xres, float(height * 72) / yres),
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'Contents': ref(contents.id),
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'Resources': ref(resources.id)})
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[doc.add_object(x) for x in [xobj, contents, resources, page]]
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