mirror of
https://github.com/unidoc/unipdf.git
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c582323a8f
* Prepared skeleton and basic component implementations for the jbig2 encoding. * Added Bitset. Implemented Bitmap. * Decoder with old Arithmetic Decoder * Partly working arithmetic * Working arithmetic decoder. * MMR patched. * rebuild to apache. * Working generic * Working generic * Decoded full document * Update Jenkinsfile go version [master] (#398) * Update Jenkinsfile go version * Decoded AnnexH document * Minor issues fixed. * Update README.md * Fixed generic region errors. Added benchmark. Added bitmap unpadder. Added Bitmap toImage method. * Fixed endofpage error * Added integration test. * Decoded all test files without errors. Implemented JBIG2Global. * Merged with v3 version * Fixed the EOF in the globals issue * Fixed the JBIG2 ChocolateData Decode * JBIG2 Added license information * Minor fix in jbig2 encoding. * Applied the logging convention * Cleaned unnecessary imports * Go modules clear unused imports * checked out the README.md * Moved trace to Debug. Fixed the build integrate tag in the document_decode_test.go * Initial encoder skeleton * Applied UniPDF Developer Guide. Fixed lint issues. * Cleared documentation, fixed style issues. * Added jbig2 doc.go files. Applied unipdf guide style. * Minor code style changes. * Minor naming and style issues fixes. * Minor naming changes. Style issues fixed. * Review r11 fixes. * Added JBIG2 Encoder skeleton. * Moved Document and Page to jbig2/document package. Created decoder package responsible for decoding jbig2 stream. * Implemented raster functions. * Added raster uni low test funcitons. * Added raster low test functions * untracked files on jbig2-encoder: c869089 Added raster low test functions * index on jbig2-encoder: c869089 Added raster low test functions * Added morph files. * implemented jbig2 encoder basics * JBIG2 Encoder - Generic method * Added jbig2 image encode ttests, black/white image tests * cleaned and tested jbig2 package * unfinished jbig2 classified encoder * jbig2 minor style changes * minor jbig2 encoder changes * prepared JBIG2 Encoder * Style and lint fixes * Minor changes and lints * Fixed shift unsinged value build errors * Minor naming change * Added jbig2 encode, image gondels. Fixed jbig2 decode bug. * Provided jbig2 core.DecodeGlobals function. * Fixed JBIG2Encoder `r6` revision issues. * Removed public JBIG2Encoder document. * Minor style changes * added NewJBIG2Encoder function. * fixed JBIG2Encoder 'r9' revision issues. * Cleared 'r9' commented code. * Updated ACKNOWLEDGEMENETS. Fixed JBIG2Encoder 'r10' revision issues. Co-authored-by: Gunnsteinn Hall <gunnsteinn.hall@gmail.com>
34 lines
952 B
Go
34 lines
952 B
Go
/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package arithmetic
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type intEncRangeS struct {
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bot, top int // the range of numbers for which this is valid.
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// the bits of data to write first, and the number which are valid
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// These bits are taken from the bottom of the uint8, in reverse order.
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data, bits uint8
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// the amount of subtract from the value before encoding it.
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delta uint16
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// intBits number of bits to use to encode to the integer.
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intBits uint8
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}
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var intEncRange = []intEncRangeS{
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{0, 3, 0, 2, 0, 2},
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{-1, -1, 9, 4, 0, 0},
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{-3, -2, 5, 3, 2, 1},
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{4, 19, 2, 3, 4, 4},
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{-19, -4, 3, 3, 4, 4},
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{20, 83, 6, 4, 20, 6},
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{-83, -20, 7, 4, 20, 6},
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{84, 339, 14, 5, 84, 8},
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{-339, -84, 15, 5, 84, 8},
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{340, 4435, 30, 6, 340, 12},
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{-4435, -340, 31, 6, 340, 12},
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{4436, 2000000000, 62, 6, 4436, 32},
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{-2000000000, -4436, 63, 6, 4436, 32},
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}
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