mirror of
https://github.com/unidoc/unipdf.git
synced 2025-05-02 22:17:06 +08:00
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.
117 lines
3.1 KiB
Go
117 lines
3.1 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 segments
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import (
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"fmt"
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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/common"
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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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)
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// TestDecodePatternDictionary tests the decode process of the pattern dictionary segment.
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func TestDecodePatternDictionary(t *testing.T) {
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t.Run("AnnexH", func(t *testing.T) {
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if testing.Verbose() {
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common.SetLogger(common.NewConsoleLogger(common.LogLevelDebug))
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}
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t.Run("S-6th", func(t *testing.T) {
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data := []byte{
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// Header
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0x00, 0x00, 0x00, 0x05, 0x10, 0x01, 0x01, 0x00, 0x00, 0x00, 0x2D,
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// Data part
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0x01, 0x04, 0x04, 0x00, 0x00, 0x00, 0x0F, 0x20, 0xD1, 0x84,
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0x61, 0x18, 0x45, 0xF2, 0xF9, 0x7C, 0x8F, 0x11, 0xC3, 0x9E,
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0x45, 0xF2, 0xF9, 0x7D, 0x42, 0x85, 0x0A, 0xAA, 0x84, 0x62,
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0x2F, 0xEE, 0xEC, 0x44, 0x62, 0x22, 0x35, 0x2A, 0x0A, 0x83,
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0xB9, 0xDC, 0xEE, 0x77, 0x80,
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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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ps, err := h.GetSegmentData()
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require.NoError(t, err)
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p, ok := ps.(*PatternDictionary)
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require.True(t, ok)
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assert.Equal(t, uint32(5), h.SegmentNumber)
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assert.Equal(t, uint64(45), h.SegmentDataLength)
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assert.Equal(t, 1, h.PageAssociation)
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require.Equal(t, true, p.IsMMREncoded)
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require.Equal(t, byte(4), p.HdpWidth)
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require.Equal(t, byte(4), p.HdpHeight)
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require.Equal(t, 15, p.GrayMax)
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dict, err := p.GetDictionary()
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require.NoError(t, err)
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for i, s := range dict {
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toCompare := bitmap.New(4, 4)
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switch i {
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case 15:
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require.NoError(t, toCompare.SetPixel(0, 3, 1))
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fallthrough
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case 14:
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require.NoError(t, toCompare.SetPixel(3, 3, 1))
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fallthrough
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case 13:
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require.NoError(t, toCompare.SetPixel(3, 0, 1))
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fallthrough
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case 12:
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require.NoError(t, toCompare.SetPixel(0, 0, 1))
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fallthrough
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case 11:
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require.NoError(t, toCompare.SetPixel(3, 1, 1))
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fallthrough
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case 10:
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require.NoError(t, toCompare.SetPixel(2, 3, 1))
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fallthrough
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case 9:
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require.NoError(t, toCompare.SetPixel(1, 0, 1))
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require.NoError(t, toCompare.SetPixel(0, 2, 1))
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fallthrough
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case 8:
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require.NoError(t, toCompare.SetPixel(3, 2, 1))
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fallthrough
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case 7:
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require.NoError(t, toCompare.SetPixel(1, 3, 1))
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fallthrough
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case 6:
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require.NoError(t, toCompare.SetPixel(0, 1, 1))
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fallthrough
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case 5:
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require.NoError(t, toCompare.SetPixel(2, 0, 1))
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fallthrough
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case 4:
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require.NoError(t, toCompare.SetPixel(1, 2, 1))
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fallthrough
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case 3:
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require.NoError(t, toCompare.SetPixel(2, 2, 1))
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fallthrough
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case 2:
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require.NoError(t, toCompare.SetPixel(1, 1, 1))
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fallthrough
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case 1:
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require.NoError(t, toCompare.SetPixel(2, 1, 1))
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}
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assert.True(t, toCompare.Equals(s), fmt.Sprintf("i: %d, %v, %v", i, s.String(), toCompare.String()))
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}
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})
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})
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}
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