mirror of
https://github.com/unidoc/unipdf.git
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e85616cec2
* 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 * Decoded full document * 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 * 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. * Integrate jbig2 tests with build system * Added jbig2 integration test golden files. * Minor jbig2 integration test fix * Removed jbig2 integration image assertions * Fixed jbig2 rowstride issue. Implemented jbig2 bit writer * Changed golden files logic. Fixes r13 issues.
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
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 jbig2
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import (
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"errors"
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"github.com/unidoc/unipdf/v3/internal/jbig2/segments"
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)
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// Common errors definitions.
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var (
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ErrNoGlobalsYet = errors.New("no global segment added yet")
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ErrNoGlobalFound = errors.New("no global segment found")
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)
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// Globals store segments that aren't associated to a page.
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// If the data is embedded in another format, for example PDF, this
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// segments might be stored separately in the file.
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// This segments will be decoded on demand, all results are stored in the document.
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type Globals map[int]*segments.Header
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// GetSegment gets the global segment header.
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func (g Globals) GetSegment(segmentNumber int) (*segments.Header, error) {
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if len(g) == 0 {
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return nil, ErrNoGlobalsYet
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}
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v, ok := g[segmentNumber]
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if !ok {
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return nil, ErrNoGlobalFound
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}
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return v, nil
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}
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// AddSegment adds the segment to the globals store.
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func (g Globals) AddSegment(segmentNumber int, segment *segments.Header) {
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g[segmentNumber] = segment
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}
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