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v2 - Support for JBIG2 (port of https://github.com/apache/pdfbox-jbig2) #631

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v2 - Support for JBIG2 (port of https://github.com/apache/pdfbox-jbig2) #631

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301fdb8
Support for JBIG2 (port of Apache's pdfbox-jbig2)
kasperdaff Jun 21, 2021
1132cfc
Update with comments @EliotJones, rename Bitmap(s) to Jbig2Bitmap(s) …
BobLd Feb 6, 2023
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10 changes: 9 additions & 1 deletion NOTICES.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -10,4 +10,12 @@ Includes the Adobe Glyph List
Copyright 1997, 1998, 2002, 2007, 2010 Adobe Systems Incorporated.

Includes the Zapf Dingbats Glyph List
Copyright 2002, 2010 Adobe Systems Incorporated.
Copyright 2002, 2010 Adobe Systems Incorporated.

------------------------------------------------------------------

Apache JBig2 ImageIO Plugin
Copyright 2017 The Apache Software Foundation

Based on source code originally developed in the JBig2 project.
Copyright (C) 1995-2017 levigo holding GmbH
167 changes: 167 additions & 0 deletions src/UglyToad.PdfPig.Tests/Filters/Jbig2/ArithmeticDecoderTest.cs
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@@ -0,0 +1,167 @@
namespace UglyToad.PdfPig.Tests.Filters.Jbig2
{
using UglyToad.PdfPig.Filters.Jbig2;
using UglyToad.PdfPig.Tests.Images;
using Xunit;

public class ArithmeticDecoderTest
{
private static readonly long[][] Tracedata = new[]{
new []{ 0L, 0x8000L, 0x42638000L, 0x3D9C0000L }, new []{ 0L, 0xAC02L, 0x84C70000L, 0x273A0000L },
new []{ 0L, 0xF002L, 0xA18C7600L, 0x4E758800L }, new []{ 0L, 0xD801L, 0x898B7600L, 0x4E758800L },
new []{ 0L, 0xC000L, 0x718A7600L, 0x4E758800L }, new []{ 0L, 0xA7FFL, 0x59897600L, 0x4E758800L },
new []{ 0L, 0x8FFEL, 0x41887600L, 0x4E758800L }, new []{ 0L, 0xEFFAL, 0x530EEC00L, 0x9CEB1000L },
new []{ 0L, 0xE539L, 0x484DEC00L, 0x9CEB1000L }, new []{ 0L, 0xDA78L, 0x3D8CEC00L, 0x9CEB1000L },
new []{ 0L, 0xCFB7L, 0x32CBEC00L, 0x9CEB1000L }, new []{ 0L, 0xC4F6L, 0x280AEC00L, 0x9CEB1000L },
new []{ 0L, 0xBA35L, 0x1D49EC00L, 0x9CEB1000L }, new []{ 0L, 0xAF74L, 0x1288EC00L, 0x9CEB1000L },
new []{ 1L, 0xA4B3L, 0x07C7EC00L, 0x9CEB1000L }, new []{ 0L, 0xAC10L, 0x7C7EC000L, 0x2F910000L },
new []{ 0L, 0x900FL, 0x607DC000L, 0x2F910000L }, new []{ 0L, 0xE81CL, 0x88F98000L, 0x5F220000L },
new []{ 0L, 0xD21BL, 0x72F88000L, 0x5F220000L }, new []{ 0L, 0xBC1AL, 0x5CF78000L, 0x5F220000L },
new []{ 0L, 0xA619L, 0x46F68000L, 0x5F220000L }, new []{ 0L, 0x9018L, 0x30F58000L, 0x5F220000L },
new []{ 0L, 0xF42EL, 0x35E90000L, 0xBE440000L }, new []{ 0L, 0xE32DL, 0x24E80000L, 0xBE440000L },
new []{ 0L, 0xD22CL, 0x13E70000L, 0xBE440000L }, new []{ 1L, 0xC12BL, 0x02E60000L, 0xBE440000L },
new []{ 0L, 0x8808L, 0x1737E000L, 0x70D01800L }, new []{ 1L, 0xE80EL, 0x066DC000L, 0xE1A03000L },
new []{ 0L, 0x9008L, 0x336E0000L, 0x5C998000L }, new []{ 0L, 0xF40EL, 0x3ADA0000L, 0xB9330000L },
new []{ 0L, 0xE00DL, 0x26D90000L, 0xB9330000L }, new []{ 1L, 0xCC0CL, 0x12D80000L, 0xB9330000L },
new []{ 0L, 0xA008L, 0x96C70800L, 0x0940F000L }, new []{ 0L, 0x8807L, 0x7EC60800L, 0x0940F000L },
new []{ 0L, 0xE00CL, 0xCD8A1000L, 0x1281E000L }, new []{ 0L, 0xCA0BL, 0xB7891000L, 0x1281E000L },
new []{ 0L, 0xB40AL, 0xA1881000L, 0x1281E000L }, new []{ 0L, 0x9E09L, 0x8B871000L, 0x1281E000L },
new []{ 0L, 0x8808L, 0x75861000L, 0x1281E000L }, new []{ 0L, 0xE40EL, 0xBF0A2000L, 0x2503C000L },
new []{ 0L, 0xD00DL, 0xAB092000L, 0x2503C000L }, new []{ 0L, 0xBC0CL, 0x97082000L, 0x2503C000L },
new []{ 0L, 0xA80BL, 0x83072000L, 0x2503C000L }, new []{ 0L, 0x940AL, 0x6F062000L, 0x2503C000L },
new []{ 0L, 0x8009L, 0x5B052000L, 0x2503C000L }, new []{ 0L, 0xD810L, 0x8E084000L, 0x4A078000L },
new []{ 0L, 0xC60FL, 0x7C074000L, 0x4A078000L }, new []{ 0L, 0xB40EL, 0x6A064000L, 0x4A078000L },
new []{ 0L, 0xA20DL, 0x58054000L, 0x4A078000L }, new []{ 0L, 0x900CL, 0x46044000L, 0x4A078000L },
new []{ 0L, 0xFC16L, 0x68068000L, 0x940F0000L }, new []{ 0L, 0xEB15L, 0x57058000L, 0x940F0000L },
new []{ 0L, 0xDA14L, 0x46048000L, 0x940F0000L }, new []{ 0L, 0xC913L, 0x35038000L, 0x940F0000L },
new []{ 0L, 0xB812L, 0x24028000L, 0x940F0000L }, new []{ 0L, 0xA711L, 0x13018000L, 0x940F0000L },
new []{ 1L, 0x9610L, 0x02008000L, 0x940F0000L }, new []{ 1L, 0x8808L, 0x10068400L, 0x78017800L },
new []{ 0L, 0xA008L, 0x80342000L, 0x1FD3C000L }, new []{ 0L, 0x8807L, 0x68332000L, 0x1FD3C000L },
new []{ 0L, 0xE00CL, 0xA0644000L, 0x3FA78000L }, new []{ 0L, 0xCA0BL, 0x8A634000L, 0x3FA78000L },
new []{ 0L, 0xB40AL, 0x74624000L, 0x3FA78000L }, new []{ 0L, 0x9E09L, 0x5E614000L, 0x3FA78000L },
new []{ 0L, 0x8808L, 0x48604000L, 0x3FA78000L }, new []{ 0L, 0xE40EL, 0x64BE8000L, 0x7F4F0000L },
new []{ 0L, 0xD00DL, 0x50BD8000L, 0x7F4F0000L }, new []{ 0L, 0xBC0CL, 0x3CBC8000L, 0x7F4F0000L },
new []{ 0L, 0xA80BL, 0x28BB8000L, 0x7F4F0000L }, new []{ 0L, 0x940AL, 0x14BA8000L, 0x7F4F0000L },
new []{ 1L, 0x8009L, 0x00B98000L, 0x7F4F0000L }, new []{ 1L, 0xA008L, 0x05CD0C00L, 0x9A3AF000L },
new []{ 0L, 0xC008L, 0x2E686000L, 0x919F8000L }, new []{ 1L, 0x9E07L, 0x0C676000L, 0x919F8000L },
new []{ 0L, 0x8804L, 0x319D8000L, 0x56660000L }, new []{ 1L, 0xC006L, 0x13390000L, 0xACCC0000L },
new []{ 0L, 0x9004L, 0x4CE41000L, 0x431FEC00L }, new []{ 0L, 0xC006L, 0x39C62000L, 0x863FD800L },
new []{ 1L, 0x9805L, 0x11C52000L, 0x863FD800L }, new []{ 0L, 0xA004L, 0x47148000L, 0x58EF6000L },
new []{ 1L, 0xD806L, 0x26270000L, 0xB1DEC000L }, new []{ 0L, 0xC004L, 0x989C0000L, 0x27670000L },
new []{ 0L, 0x8C03L, 0x649B0000L, 0x27670000L }, new []{ 0L, 0xB004L, 0x61340400L, 0x4ECFFA00L },
new []{ 0L, 0x8003L, 0x31330400L, 0x4ECFFA00L }, new []{ 1L, 0xA004L, 0x02640800L, 0x9D9FF400L },
new []{ 1L, 0xA004L, 0x09902000L, 0x9673D000L }, new []{ 1L, 0xD004L, 0x26408000L, 0xA9C34000L },
new []{ 0L, 0xE004L, 0x99020000L, 0x47010000L }, new []{ 0L, 0x9803L, 0x51010000L, 0x47010000L },
new []{ 1L, 0xA004L, 0x12004000L, 0x8E03BE00L }, new []{ 0L, 0xE004L, 0x48010000L, 0x9802F800L },
new []{ 1L, 0x9803L, 0x00000000L, 0x9802F800L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001F000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201E000L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001C000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA2018000L }, new []{ 0L, 0x9002L, 0x00000000L, 0x90010000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201FE00L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001FC00L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201F800L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001F000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201E000L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001C000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA2018000L }, new []{ 0L, 0x9002L, 0x00000000L, 0x90010000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201FE00L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001FC00L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201F800L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001F000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA201E000L }, new []{ 0L, 0x9002L, 0x00000000L, 0x9001C000L },
new []{ 1L, 0xA202L, 0x00000000L, 0xA2018000L }, new []{ 0L, 0x9002L, 0x00000000L, 0x90010000L },
new []{ 1L, 0xA202L, 0x00008200L, 0xA2017C00L }, new []{ 0L, 0x9002L, 0x00010400L, 0x9000F800L },
new []{ 1L, 0xA202L, 0x00020800L, 0xA1FFF000L }, new []{ 0L, 0x9002L, 0x00041000L, 0x8FFDE000L },
new []{ 1L, 0xA202L, 0x00082000L, 0xA1F9C000L }, new []{ 0L, 0x9002L, 0x00104000L, 0x8FF18000L },
new []{ 1L, 0xA202L, 0x00208000L, 0xA1E10000L }, new []{ 0L, 0x9002L, 0x00410000L, 0x8FC00000L },
new []{ 1L, 0xA202L, 0x00821A00L, 0xA17FE400L }, new []{ 0L, 0x9002L, 0x01043400L, 0x8EFDC800L },
new []{ 1L, 0xA202L, 0x02086800L, 0x9FF99000L }, new []{ 0L, 0x9002L, 0x0410D000L, 0x8BF12000L },
new []{ 1L, 0xA202L, 0x0821A000L, 0x99E04000L }, new []{ 0L, 0x9002L, 0x10434000L, 0x7FBE8000L },
new []{ 1L, 0xA202L, 0x20868000L, 0x817B0000L }, new []{ 0L, 0x9002L, 0x410D0000L, 0x4EF40000L },
new []{ 0L, 0xA202L, 0x821B7600L, 0x1FE68800L }, new []{ 0L, 0xB402L, 0x7434EC00L, 0x3FCD1000L },
new []{ 0L, 0xF802L, 0x7867D800L, 0x7F9A2000L }, new []{ 0L, 0xC401L, 0x4466D800L, 0x7F9A2000L },
new []{ 1L, 0x9000L, 0x1065D800L, 0x7F9A2000L }, new []{ 0L, 0xD004L, 0x41976000L, 0x8E6C8000L },
new []{ 1L, 0x9803L, 0x09966000L, 0x8E6C8000L }, new []{ 1L, 0xE004L, 0x26598000L, 0xB9AA0000L },
new []{ 0L, 0x9002L, 0x4CB30000L, 0x434E0000L }, new []{ 0L, 0xA202L, 0x99670C00L, 0x089AF200L },
new []{ 0L, 0xB402L, 0xA2CC1800L, 0x1135E400L }, new []{ 0L, 0xF802L, 0xD5963000L, 0x226BC800L },
new []{ 0L, 0xC401L, 0xA1953000L, 0x226BC800L }, new []{ 0L, 0x9000L, 0x6D943000L, 0x226BC800L },
new []{ 0L, 0xB7FEL, 0x73266000L, 0x44D79000L }, new []{ 0L, 0x87FDL, 0x43256000L, 0x44D79000L },
new []{ 1L, 0xAFF8L, 0x2648C000L, 0x89AF2000L }, new []{ 0L, 0xA004L, 0x99230000L, 0x06E08000L },
new []{ 0L, 0xD806L, 0xCA440000L, 0x0DC10000L }, new []{ 0L, 0xA805L, 0x9A430000L, 0x0DC10000L },
new []{ 0L, 0xF008L, 0xD485E800L, 0x1B821600L }, new []{ 0L, 0xC807L, 0xAC84E800L, 0x1B821600L },
new []{ 0L, 0xA006L, 0x8483E800L, 0x1B821600L }, new []{ 0L, 0xF00AL, 0xB905D000L, 0x37042C00L },
new []{ 0L, 0xCC09L, 0x9504D000L, 0x37042C00L }, new []{ 0L, 0xA808L, 0x7103D000L, 0x37042C00L },
new []{ 0L, 0x8407L, 0x4D02D000L, 0x37042C00L }, new []{ 0L, 0xC00CL, 0x5203A000L, 0x6E085800L },
new []{ 0L, 0x9E0BL, 0x3002A000L, 0x6E085800L }, new []{ 0L, 0xF814L, 0x1C034000L, 0xDC10B000L },
new []{ 1L, 0xDC13L, 0x00024000L, 0xDC10B000L }, new []{ 1L, 0xE008L, 0x00120000L, 0xDFF58000L },
new []{ 1L, 0x9004L, 0x00486200L, 0x8FBB9C00L }, new []{ 1L, 0xC004L, 0x01218800L, 0xBEE27000L },
new []{ 1L, 0xD004L, 0x04862000L, 0xCB7DC000L }, new []{ 1L, 0xE004L, 0x12188000L, 0xCDEB0000L },
new []{ 0L, 0x9002L, 0x24310000L, 0x6BD00000L }, new []{ 0L, 0xA202L, 0x4862FE00L, 0x599F0000L },
new []{ 1L, 0xB402L, 0x00C3FC00L, 0xB33E0000L }, new []{ 1L, 0xE004L, 0x030FF000L, 0xDCF40000L },
new []{ 0L, 0x9002L, 0x061FE000L, 0x89E20000L }, new []{ 1L, 0xA202L, 0x0C3FC000L, 0x95C20000L },
new []{ 0L, 0x9002L, 0x187F8000L, 0x77820000L }, new []{ 1L, 0xA202L, 0x30FF0000L, 0x71020000L },
new []{ 1L, 0x9002L, 0x61FFFE00L, 0x2E020000L }, new []{ 1L, 0xFC04L, 0x43FBF800L, 0xB8080000L },
new []{ 1L, 0xA802L, 0x87F7F000L, 0x200A0000L }, new []{ 0L, 0xA402L, 0x63EDE000L, 0x40140000L },
new []{ 0L, 0x9C02L, 0x1BD9C000L, 0x80280000L }, new []{ 1L, 0xAC02L, 0x37B38000L, 0x744E0000L },
new []{ 1L, 0xA802L, 0x6F670000L, 0x389A0000L }, new []{ 1L, 0xA402L, 0x32CE2000L, 0x7133DC00L },
new []{ 1L, 0xAC02L, 0x659C4000L, 0x4665B800L }, new []{ 0L, 0xB002L, 0x23368000L, 0x8CCB7000L },
new []{ 1L, 0xA202L, 0x466D0000L, 0x5B94E000L }, new []{ 1L, 0xA802L, 0x8CDA0000L, 0x1B27C000L },
new []{ 1L, 0xAE02L, 0x77B20000L, 0x364F8000L }, new []{ 1L, 0xCC02L, 0x5F620000L, 0x6C9F0000L },
new []{ 0L, 0x9401L, 0x27610000L, 0x6C9F0000L }, new []{ 1L, 0xE004L, 0x9D87FC00L, 0x427C0000L },
new []{ 1L, 0x9803L, 0x5586FC00L, 0x427C0000L }, new []{ 0L, 0xA004L, 0x1B0BF800L, 0x84F80000L },
new []{ 1L, 0xE004L, 0x6C2FE000L, 0x73D40000L }, new []{ 0L, 0x9803L, 0x242EE000L, 0x73D40000L },
new []{ 1L, 0x9002L, 0x485DC000L, 0x47A40000L }, new []{ 1L, 0xA202L, 0x90BB8000L, 0x11460000L },
new []{ 1L, 0xB402L, 0x91750000L, 0x228C0000L }, new []{ 1L, 0xF802L, 0xB2E8DC00L, 0x45192000L },
new []{ 1L, 0xC401L, 0x7EE7DC00L, 0x45192000L }, new []{ 1L, 0x9000L, 0x4AE6DC00L, 0x45192000L },
new []{ 0L, 0xB7FEL, 0x2DCBB800L, 0x8A324000L }, new []{ 1L, 0xC004L, 0xB72EE000L, 0x08D50000L },
new []{ 1L, 0x8C03L, 0x832DE000L, 0x08D50000L }, new []{ 1L, 0xB004L, 0x9E59C000L, 0x11AA0000L },
new []{ 1L, 0x8003L, 0x6E58C000L, 0x11AA0000L }, new []{ 1L, 0xA004L, 0x7CAF8000L, 0x23540000L },
new []{ 1L, 0xF006L, 0xA95D0000L, 0x46A80000L }, new []{ 1L, 0xCC05L, 0x855C0000L, 0x46A80000L },
new []{ 1L, 0xA804L, 0x615B0000L, 0x46A80000L }, new []{ 1L, 0x8403L, 0x3D5A0000L, 0x46A80000L },
new []{ 1L, 0xC004L, 0x32B28E00L, 0x8D517000L }, new []{ 0L, 0x9E03L, 0x10B18E00L, 0x8D517000L },
new []{ 1L, 0x8804L, 0x42C63800L, 0x453DC000L }, new []{ 1L, 0xC006L, 0x358A7000L, 0x8A7B8000L },
new []{ 0L, 0x9C05L, 0x11897000L, 0x8A7B8000L }, new []{ 1L, 0x9004L, 0x4625C000L, 0x49DE0000L },
new []{ 1L, 0xC006L, 0x2C498000L, 0x93BC0000L }, new []{ 0L, 0x9805L, 0x04488000L, 0x93BC0000L },
new []{ 0L, 0xA004L, 0x11223400L, 0x8EE1CA00L }, new []{ 1L, 0xD004L, 0x4488D000L, 0x8B7B2800L },
new []{ 0L, 0x9803L, 0x0C87D000L, 0x8B7B2800L }, new []{ 0L, 0xE004L, 0x321F4000L, 0xADE4A000L },
new []{ 0L, 0x9002L, 0x643E8000L, 0x2BC34000L }, new []{ 0L, 0xFC04L, 0x4CF60000L, 0xAF0D0000L },
new []{ 0L, 0xA802L, 0x99EDB600L, 0x0E144800L }, new []{ 1L, 0xA402L, 0x87D96C00L, 0x1C289000L },
new []{ 0L, 0x9C02L, 0x63B0D800L, 0x38512000L }, new []{ 0L, 0x8C02L, 0x1B5FB000L, 0x70A24000L },
new []{ 1L, 0xAC02L, 0x36BF6000L, 0x75428000L }, new []{ 1L, 0xA802L, 0x6D7EC000L, 0x3A830000L },
new []{ 1L, 0xA402L, 0x2EFB8000L, 0x75060000L }, new []{ 1L, 0xAC02L, 0x5DF70000L, 0x4E0A0000L },
new []{ 0L, 0xB002L, 0x13ECD400L, 0x9C152A00L }, new []{ 1L, 0xA202L, 0x27D9A800L, 0x7A285400L },
new []{ 0L, 0xA802L, 0x4FB35000L, 0x584EA800L }, new []{ 0L, 0xA202L, 0x9F66A000L, 0x029B5000L },
new []{ 0L, 0x9C02L, 0x96CB4000L, 0x0536A000L }, new []{ 1L, 0x8C02L, 0x81948000L, 0x0A6D4000L },
new []{ 1L, 0xD804L, 0xAE4E0000L, 0x29B50000L }, new []{ 0L, 0x8203L, 0x584D0000L, 0x29B50000L },
new []{ 1L, 0xB008L, 0x09337C00L, 0xA6D48000L }, new []{ 0L, 0xAC02L, 0x1266F800L, 0x999B0000L },
new []{ 1L, 0xAC02L, 0x24CDF000L, 0x87340000L }, new []{ 0L, 0xAC02L, 0x499BE000L, 0x62660000L },
new []{ 0L, 0xAC02L, 0x9337C000L, 0x18CA0000L }, new []{ 0L, 0xAC02L, 0x7A6D8000L, 0x31940000L },
new []{ 1L, 0xB002L, 0x4CD90000L, 0x63280000L }, new []{ 1L, 0xA202L, 0x99B3FE00L, 0x084E0000L },
new []{ 1L, 0x9C02L, 0x8B65FC00L, 0x109C0000L }, new []{ 0L, 0x8C02L, 0x6AC9F800L, 0x21380000L },
new []{ 1L, 0xD804L, 0x5323E000L, 0x84E00000L }, new []{ 1L, 0xAC02L, 0xA647C000L, 0x05BA0000L },
new []{ 1L, 0xAC02L, 0xA08D8000L, 0x0B740000L }, new []{ 1L, 0xB002L, 0x99190000L, 0x16E80000L },
new []{ 1L, 0xBE02L, 0x9031FE00L, 0x2DD00000L }, new []{ 1L, 0xEC02L, 0x9061FC00L, 0x5BA00000L }};

[Fact]
public void DecodeTest()
{
var iis = new ImageInputStream(ImageHelpers.LoadFileBytes("arith-encoded-testsequence.bin"));
var decoder = new ArithmeticDecoder(iis);

var cx = new CX(1, 0);
for (int i = 0; i < 257; i++)
{
decoder.Decode(cx);
}
}

[Fact]
public void DecodeTestWithTracadataComparison()
{
var iis = new ImageInputStream(ImageHelpers.LoadFileBytes("arith-encoded-testsequence.bin"));
var decoder = new ArithmeticDecoder(iis);
var cx = new CX(1, 0);

for (int i = 0; i < 255; i++)
{
Assert.Equal(Tracedata[i][0], decoder.Decode(cx));
Assert.Equal(Tracedata[i + 1][1], decoder.A);
Assert.Equal(Tracedata[i + 1][2], decoder.C);
}
}
}
}
21 changes: 21 additions & 0 deletions src/UglyToad.PdfPig.Tests/Filters/Jbig2/ArithmeticIntegerDecoderTest.cs
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namespace UglyToad.PdfPig.Tests.Filters.Jbig2
{
using Xunit;
using UglyToad.PdfPig.Filters.Jbig2;
using UglyToad.PdfPig.Tests.Images;

public class ArithmeticIntegerDecoderTest
{
[Fact]
public void DecodeTest()
{
var iis = new ImageInputStream(ImageHelpers.LoadFileBytes("arith-encoded-testsequence.bin"));
var ad = new ArithmeticDecoder(iis);
var aid = new ArithmeticIntegerDecoder(ad);

long result = aid.Decode(null);

Assert.Equal(1, result);
}
}
}
86 changes: 86 additions & 0 deletions src/UglyToad.PdfPig.Tests/Filters/Jbig2/BitmapTest.cs
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namespace UglyToad.PdfPig.Tests.Filters.Jbig2
{
using System;
using Xunit;
using UglyToad.PdfPig.Filters.Jbig2;

public class BitmapTest
{
[Fact]
public void GetPixelAndSetPixelTest()
{
var bitmap = new Jbig2Bitmap(37, 49);
Assert.Equal(0, bitmap.GetPixel(3, 19));

bitmap.SetPixel(3, 19, (byte)1);

Assert.Equal(1, bitmap.GetPixel(3, 19));
}

[Fact]
public void GetByteAndSetByteTest()
{
var bitmap = new Jbig2Bitmap(16, 16);

byte value = (byte)4;
bitmap.SetByte(0, value);
bitmap.SetByte(31, value);

Assert.Equal(value, bitmap.GetByte(0));
Assert.Equal(value, bitmap.GetByte(31));
}

[Fact]
public void GetByteThrowsExceptionTest()
{
var bitmap = new Jbig2Bitmap(16, 16);

Action action = () => bitmap.GetByte(32);

Assert.Throws<IndexOutOfRangeException>(action);
}

[Fact]
public void SetByteThrowsExceptionTest()
{
var bitmap = new Jbig2Bitmap(16, 16);

Action action = () => bitmap.SetByte(32, (byte)0);

Assert.Throws<IndexOutOfRangeException>(action);
}

[Fact]
public void GetByteAsIntegerTest()
{
var bitmap = new Jbig2Bitmap(16, 16);

var byteValue = (byte)4;
int integerValue = byteValue;
bitmap.SetByte(0, byteValue);
bitmap.SetByte(31, byteValue);

Assert.Equal(integerValue, bitmap.GetByteAsInteger(0));
Assert.Equal(integerValue, bitmap.GetByteAsInteger(31));

}

[Fact]
public void GetHeightTest()
{
int height = 16;
var bitmap = new Jbig2Bitmap(1, height);

Assert.Equal(height, bitmap.Height);
}

[Fact]
public void GetWidthTest()
{
int width = 16;
var bitmap = new Jbig2Bitmap(width, 1);

Assert.Equal(width, bitmap.Width);
}
}
}
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