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>
95 lines
2.6 KiB
Go
95 lines
2.6 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 segments
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/unidoc/unipdf/v3/internal/jbig2/bitmap"
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"github.com/unidoc/unipdf/v3/internal/jbig2/reader"
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"github.com/unidoc/unipdf/v3/internal/jbig2/writer"
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)
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// TestPageInformationSegment tests the jbig2 page information segment.
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func TestPageInformationSegment(t *testing.T) {
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t.Run("2nd", func(t *testing.T) {
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data := []byte{
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// Header
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0x00, 0x00, 0x00, 0x01, 0x30, 0x00, 0x01, 0x00, 0x00, 0x00, 0x13,
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// Data part
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0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
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}
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r := reader.New(data)
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d := &document{}
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h, err := NewHeader(d, r, 0, OSequential)
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require.NoError(t, err)
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p := &PageInformationSegment{}
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require.NoError(t, p.Init(h, r))
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assert.Equal(t, 64, p.PageBMWidth)
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assert.Equal(t, 56, p.PageBMHeight)
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assert.Equal(t, uint8(0), p.defaultPixelValue)
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assert.Equal(t, bitmap.CombinationOperator(0), p.combinationOperator)
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assert.False(t, p.IsStripe)
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})
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}
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func TestEncodePageInformationSegment(t *testing.T) {
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p := &PageInformationSegment{
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PageBMWidth: 64,
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PageBMHeight: 56,
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defaultPixelValue: 0,
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IsStripe: false,
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IsLossless: true,
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}
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h := &Header{SegmentNumber: 1, PageAssociation: 1, Type: TPageInformation, SegmentData: p}
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// initialize buffered writer
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w := writer.BufferedMSB()
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// encode page information segment
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n, err := h.Encode(w)
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require.NoError(t, err)
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assert.Equal(t, n, len(w.Data()), "n: %d", n)
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assert.Equal(t, int64(11), h.HeaderLength)
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assert.Equal(t, uint64(19), h.SegmentDataLength)
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// encoded data should be equal to:
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expected := []byte{
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// Header part
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// 00000000 00000000 00000000 00000001 - segment number
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0x00, 0x00, 0x00, 0x01,
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// 11000000 - segment flags
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0x30,
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// segment referred to count and flags
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0x00,
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// page association
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0x01,
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// segment data length - 19 bytes
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// 00000000 00000000 00000000 00010011
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0x00, 0x00, 0x00, 0x13,
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// 00000000 00000000 00000000 01000000 - bm width
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0x00, 0x00, 0x00, 0x40,
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// 00000000 00000000 00000000 00111000 - bm height
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0x00, 0x00, 0x00, 0x38,
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// 00000000 00000000 00000000 00000000 - x resolution
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0x00, 0x00, 0x00, 0x00,
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// 00000000 00000000 00000000 00000000 - y resolution
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0x00, 0x00, 0x00, 0x00,
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// 00000001 - flags
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0x01,
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// 00000000 00000000
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0x00, 0x00,
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}
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assert.Equal(t, expected, w.Data())
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}
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