69 lines
2.1 KiB
Ruby
69 lines
2.1 KiB
Ruby
class Jbig2enc < Formula
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desc "JBIG2 encoder (for monochrome documents)"
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homepage "https://github.com/agl/jbig2enc"
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revision 1
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stable do
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url "https://github.com/agl/jbig2enc/archive/0.28-dist.tar.gz"
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sha256 "83e71ce2d27ba845058b9f9fefc6c5586c7731fdac8709611e4f49f271a580f1"
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version "0.28"
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# Patch data from https://github.com/agl/jbig2enc/commit/53ce5fe7e73d7ed95c9e12b52dd4984723f865fa
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patch :DATA
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end
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head do
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url "https://github.com/agl/jbig2enc.git"
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depends_on "autoconf" => :build
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depends_on "automake" => :build
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depends_on "libtool" => :build
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end
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depends_on "leptonica"
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def install
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system "./autogen.sh" if build.head?
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system "./configure", "--prefix=#{prefix}"
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system "make", "install"
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end
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end
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__END__
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diff --git a/configure.ac b/configure.ac
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index fe37c22..753a607 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -55,6 +55,7 @@ AC_CHECK_LIB([lept], [findFileFormatStream], [], [
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echo "Error! Leptonica not detected."
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exit -1
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])
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+AC_CHECK_FUNCS(expandBinaryPower2Low,,)
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# test for function - it should detect leptonica dependecies
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# Check for possible dependancies of leptonica.
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diff --git a/src/jbig2.cc b/src/jbig2.cc
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index e10f042..515c1ef 100644
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--- a/src/jbig2.cc
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+++ b/src/jbig2.cc
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@@ -130,11 +130,16 @@ segment_image(PIX *pixb, PIX *piximg) {
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// input color image, so we have to do it this way...
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// is there a better way?
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// PIX *pixd = pixExpandBinary(pixd4, 4);
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- PIX *pixd = pixCreate(piximg->w, piximg->h, 1);
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- pixCopyResolution(pixd, piximg);
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- if (verbose) pixInfo(pixd, "mask image: ");
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- expandBinaryPower2Low(pixd->data, pixd->w, pixd->h, pixd->wpl,
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+ PIX *pixd;
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+#ifdef HAVE_EXPANDBINARYPOWER2LOW
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+ pixd = pixCreate(piximg->w, piximg->h, 1);
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+ pixCopyResolution(pixd, piximg);
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+ expandBinaryPower2Low(pixd->data, pixd->w, pixd->h, pixd->wpl,
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pixd4->data, pixd4->w, pixd4->h, pixd4->wpl, 4);
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+#else
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+ pixd = pixExpandBinaryPower2(pixd4, 4);
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+#endif
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+ if (verbose) pixInfo(pixd, "mask image: ");
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pixDestroy(&pixd4);
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pixDestroy(&pixsf4);
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