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>
53 lines
1.2 KiB
Go
53 lines
1.2 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 core
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import (
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"image"
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"image/color"
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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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)
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// TestImageToJBIG2Image tests conversion of image.Image to JBIG2Image
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func TestImageToJBIG2Image(t *testing.T) {
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t.Run("BlackWhite", func(t *testing.T) {
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// having a test black white image of a frame.
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// The frame has a width of 2 bits.
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g := image.NewGray(image.Rect(0, 0, 50, 50))
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bounds := g.Bounds()
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bm := bitmap.New(50, 50)
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setPix := func(x, y int) {
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g.SetGray(x, y, color.Gray{})
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assert.NoError(t, bm.SetPixel(x, y, 1))
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}
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for x := 0; x < bounds.Dx(); x++ {
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for y := 0; y < bounds.Dy(); y++ {
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switch x {
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case 0, 1, 48, 49:
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setPix(x, y)
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default:
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if !(y > 1 && y < 48) {
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setPix(x, y)
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} else {
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g.SetGray(x, y, color.Gray{Y: 255})
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}
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}
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}
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}
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// execute GoImageToJBIG2 and check jbig2 images.
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jb2, err := GoImageToJBIG2(g, JB2ImageAutoThreshold)
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require.NoError(t, err)
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assert.Equal(t, jb2.Data, bm.Data)
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})
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}
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