public override void readSegment()
{
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("==== Reading Text Region ====");
}
base.readSegment();
/** read text region Segment flags */
readTextRegionFlags();
short[] buff = new short[4];
decoder.readbyte(buff);
long noOfSymbolInstances = BinaryOperation.getInt32(buff);
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("noOfSymbolInstances = " + noOfSymbolInstances);
}
int noOfReferredToSegments = segmentHeader.getReferredToSegmentCount();
int[] referredToSegments = segmentHeader.getReferredToSegments();
//List codeTables = new ArrayList();
List <Segment> segmentsReferenced = new List <Segment>();
long noOfSymbols = 0;
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("noOfReferredToSegments = " + noOfReferredToSegments);
}
int i = 0;
for (i = 0; i < noOfReferredToSegments; i++)
{
Segment seg = decoder.findSegment(referredToSegments[i]);
int type = seg.getSegmentHeader().getSegmentType();
if (type == Segment.SYMBOL_DICTIONARY)
{
segmentsReferenced.Add(seg);
noOfSymbols += ((SymbolDictionarySegment)seg).getNoOfExportedSymbols();
}
else if (type == Segment.TABLES)
{
//codeTables.add(seg);
}
}
long symbolCodeLength = 0;
int count = 1;
while (count < noOfSymbols)
{
symbolCodeLength++;
count <<= 1;
}
int currentSymbol = 0;
JBIG2Bitmap[] symbols = new JBIG2Bitmap[noOfSymbols];
foreach (Segment it in segmentsReferenced)
{
if (it.getSegmentHeader().getSegmentType() == Segment.SYMBOL_DICTIONARY)
{
JBIG2Bitmap[] bitmaps = ((SymbolDictionarySegment)it).getBitmaps();
for (int j = 0; j < bitmaps.Length; j++)
{
symbols[currentSymbol] = bitmaps[j];
currentSymbol++;
}
}
}
long[,] huffmanFSTable = null;
long[,] huffmanDSTable = null;
long[,] huffmanDTTable = null;
long[,] huffmanRDWTable = null;
long[,] huffmanRDHTable = null;
long[,] huffmanRDXTable = null;
long[,] huffmanRDYTable = null;
long[,] huffmanRSizeTable = null;
bool sbHuffman = textRegionFlags.getFlagValue(TextRegionFlags.SB_HUFF) != 0;
i = 0;
if (sbHuffman)
{
int sbHuffFS = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_FS);
if (sbHuffFS == 0)
{
huffmanFSTable = HuffmanDecoder.huffmanTableF;
}
else if (sbHuffFS == 1)
{
huffmanFSTable = HuffmanDecoder.huffmanTableG;
}
else
{
}
int sbHuffDS = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_DS);
if (sbHuffDS == 0)
{
huffmanDSTable = HuffmanDecoder.huffmanTableH;
}
else if (sbHuffDS == 1)
{
huffmanDSTable = HuffmanDecoder.huffmanTableI;
}
else if (sbHuffDS == 2)
{
huffmanDSTable = HuffmanDecoder.huffmanTableJ;
}
else
{
}
int sbHuffDT = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_DT);
if (sbHuffDT == 0)
{
huffmanDTTable = HuffmanDecoder.huffmanTableK;
}
else if (sbHuffDT == 1)
{
huffmanDTTable = HuffmanDecoder.huffmanTableL;
}
else if (sbHuffDT == 2)
{
huffmanDTTable = HuffmanDecoder.huffmanTableM;
}
else
{
}
int sbHuffRDW = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_RDW);
if (sbHuffRDW == 0)
{
huffmanRDWTable = HuffmanDecoder.huffmanTableN;
}
else if (sbHuffRDW == 1)
{
huffmanRDWTable = HuffmanDecoder.huffmanTableO;
}
else
{
}
int sbHuffRDH = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_RDH);
if (sbHuffRDH == 0)
{
huffmanRDHTable = HuffmanDecoder.huffmanTableN;
}
else if (sbHuffRDH == 1)
{
huffmanRDHTable = HuffmanDecoder.huffmanTableO;
}
else
{
}
int sbHuffRDX = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_RDX);
if (sbHuffRDX == 0)
{
huffmanRDXTable = HuffmanDecoder.huffmanTableN;
}
else if (sbHuffRDX == 1)
{
huffmanRDXTable = HuffmanDecoder.huffmanTableO;
}
else
{
}
int sbHuffRDY = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_RDY);
if (sbHuffRDY == 0)
{
huffmanRDYTable = HuffmanDecoder.huffmanTableN;
}
else if (sbHuffRDY == 1)
{
huffmanRDYTable = HuffmanDecoder.huffmanTableO;
}
else
{
}
int sbHuffRSize = textRegionHuffmanFlags.getFlagValue(TextRegionHuffmanFlags.SB_HUFF_RSIZE);
if (sbHuffRSize == 0)
{
huffmanRSizeTable = HuffmanDecoder.huffmanTableA;
}
else
{
}
}
long[][] runLengthTable = new long[36][];
long[][] symbolCodeTable = new long[noOfSymbols + 1][];
if (sbHuffman)
{
decoder.consumeRemainingBits();
for (i = 0; i < 32; i++)
{
runLengthTable[i] = new long[] { i, decoder.readBits(4), 0, 0 };
}
runLengthTable[32] = new long[] { 0x103, decoder.readBits(4), 2, 0 };
runLengthTable[33] = new long[] { 0x203, decoder.readBits(4), 3, 0 };
runLengthTable[34] = new long[] { 0x20b, decoder.readBits(4), 7, 0 };
runLengthTable[35] = new long[] { 0, 0, HuffmanDecoder.jbig2HuffmanEOT };
runLengthTable = HuffmanDecoder.buildTable(runLengthTable, 35);
for (i = 0; i < noOfSymbols; i++)
{
symbolCodeTable[i] = new long[] { i, 0, 0, 0 };
}
i = 0;
while (i < noOfSymbols)
{
long j = huffmanDecoder.decodeInt(runLengthTable).intResult();
if (j > 0x200)
{
for (j -= 0x200; j != 0 && i < noOfSymbols; j--)
{
symbolCodeTable[i++][1] = 0;
}
}
else if (j > 0x100)
{
for (j -= 0x100; j != 0 && i < noOfSymbols; j--)
{
symbolCodeTable[i][1] = symbolCodeTable[i - 1][1];
i++;
}
}
else
{
symbolCodeTable[i++][1] = j;
}
}
symbolCodeTable[noOfSymbols][1] = 0;
symbolCodeTable[noOfSymbols][2] = HuffmanDecoder.jbig2HuffmanEOT;
symbolCodeTable = HuffmanDecoder.buildTable(symbolCodeTable, (int)noOfSymbols);
decoder.consumeRemainingBits();
}
else
{
symbolCodeTable = null;
arithmeticDecoder.resetIntStats((int)symbolCodeLength);
arithmeticDecoder.start();
}
bool symbolRefine = textRegionFlags.getFlagValue(TextRegionFlags.SB_REFINE) != 0;
long logStrips = textRegionFlags.getFlagValue(TextRegionFlags.LOG_SB_STRIPES);
int defaultPixel = textRegionFlags.getFlagValue(TextRegionFlags.SB_DEF_PIXEL);
int combinationOperator = textRegionFlags.getFlagValue(TextRegionFlags.SB_COMB_OP);
bool transposed = textRegionFlags.getFlagValue(TextRegionFlags.TRANSPOSED) != 0;
int referenceCorner = textRegionFlags.getFlagValue(TextRegionFlags.REF_CORNER);
int sOffset = textRegionFlags.getFlagValue(TextRegionFlags.SB_DS_OFFSET);
int template = textRegionFlags.getFlagValue(TextRegionFlags.SB_R_TEMPLATE);
if (symbolRefine)
{
arithmeticDecoder.resetRefinementStats(template, null);
}
JBIG2Bitmap bitmap = new JBIG2Bitmap(regionBitmapWidth, regionBitmapHeight, arithmeticDecoder, huffmanDecoder, mmrDecoder);
bitmap.readTextRegion2(sbHuffman, symbolRefine, noOfSymbolInstances, logStrips, noOfSymbols, symbolCodeTable, symbolCodeLength, symbols, defaultPixel, combinationOperator, transposed, referenceCorner, sOffset, huffmanFSTable, huffmanDSTable, huffmanDTTable, huffmanRDWTable, huffmanRDHTable, huffmanRDXTable, huffmanRDYTable, huffmanRSizeTable, template, symbolRegionAdaptiveTemplateX, symbolRegionAdaptiveTemplateY, decoder);
if (inlineImage)
{
PageInformationSegment pageSegment = decoder.findPageSegement(segmentHeader.getPageAssociation());
JBIG2Bitmap pageBitmap = pageSegment.getPageBitmap();
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine(pageBitmap + " " + bitmap);
}
int externalCombinationOperator = regionFlags.getFlagValue(RegionFlags.EXTERNAL_COMBINATION_OPERATOR);
pageBitmap.combine(bitmap, regionBitmapXLocation, regionBitmapYLocation, externalCombinationOperator);
}
else
{
bitmap.setBitmapNumber(getSegmentHeader().getSegmentNumber());
decoder.appendBitmap(bitmap);
}
decoder.consumeRemainingBits();
}
public void readSegment()
{
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("==== Reading Generic Refinement Region ====");
}
base.readSegment();
/** read text region segment flags */
readGenericRegionFlags();
short[] genericRegionAdaptiveTemplateX = new short[2];
short[] genericRegionAdaptiveTemplateY = new short[2];
int template = refinementRegionFlags.getFlagValue(RefinementRegionFlags.GR_TEMPLATE);
if (template == 0)
{
genericRegionAdaptiveTemplateX[0] = readATValue();
genericRegionAdaptiveTemplateY[0] = readATValue();
genericRegionAdaptiveTemplateX[1] = readATValue();
genericRegionAdaptiveTemplateY[1] = readATValue();
}
if (noOfReferedToSegments == 0 || inlineImage)
{
PageInformationSegment pageSegment = decoder.findPageSegement(segmentHeader.getPageAssociation());
JBIG2Bitmap pageBitmap = pageSegment.getPageBitmap();
if (pageSegment.getPageBitmapHeight() == -1 && regionBitmapYLocation + regionBitmapHeight > pageBitmap.getHeight())
{
pageBitmap.expand(regionBitmapYLocation + regionBitmapHeight, pageSegment.getPageInformationFlags().getFlagValue(PageInformationFlags.DEFAULT_PIXEL_VALUE));
}
}
if (noOfReferedToSegments > 1)
{
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("Bad reference in JBIG2 generic refinement Segment");
}
return;
}
JBIG2Bitmap referedToBitmap;
if (noOfReferedToSegments == 1)
{
referedToBitmap = decoder.findBitmap(referedToSegments[0]);
}
else
{
PageInformationSegment pageSegment = decoder.findPageSegement(segmentHeader.getPageAssociation());
JBIG2Bitmap pageBitmap = pageSegment.getPageBitmap();
referedToBitmap = pageBitmap.getSlice(regionBitmapXLocation, regionBitmapYLocation, regionBitmapWidth, regionBitmapHeight);
}
arithmeticDecoder.resetRefinementStats(template, null);
arithmeticDecoder.start();
bool typicalPredictionGenericRefinementOn = refinementRegionFlags.getFlagValue(RefinementRegionFlags.TPGDON) != 0;
JBIG2Bitmap bitmap = new JBIG2Bitmap(regionBitmapWidth, regionBitmapHeight, arithmeticDecoder, huffmanDecoder, mmrDecoder);
bitmap.readGenericRefinementRegion(template, typicalPredictionGenericRefinementOn, referedToBitmap, 0, 0, genericRegionAdaptiveTemplateX, genericRegionAdaptiveTemplateY);
if (inlineImage)
{
PageInformationSegment pageSegment = decoder.findPageSegement(segmentHeader.getPageAssociation());
JBIG2Bitmap pageBitmap = pageSegment.getPageBitmap();
int extCombOp = regionFlags.getFlagValue(RegionFlags.EXTERNAL_COMBINATION_OPERATOR);
pageBitmap.combine(bitmap, regionBitmapXLocation, regionBitmapYLocation, extCombOp);
}
else
{
bitmap.setBitmapNumber(getSegmentHeader().getSegmentNumber());
decoder.appendBitmap(bitmap);
}
}
public override void readSegment()
{
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("==== Reading Immediate Generic Region ====");
}
base.readSegment();
/** read text region Segment flags */
readGenericRegionFlags();
bool useMMR = genericRegionFlags.getFlagValue(GenericRegionFlags.MMR) != 0;
int template = genericRegionFlags.getFlagValue(GenericRegionFlags.GB_TEMPLATE);
short[] genericBAdaptiveTemplateX = new short[4];
short[] genericBAdaptiveTemplateY = new short[4];
if (!useMMR)
{
if (template == 0)
{
genericBAdaptiveTemplateX[0] = readATValue();
genericBAdaptiveTemplateY[0] = readATValue();
genericBAdaptiveTemplateX[1] = readATValue();
genericBAdaptiveTemplateY[1] = readATValue();
genericBAdaptiveTemplateX[2] = readATValue();
genericBAdaptiveTemplateY[2] = readATValue();
genericBAdaptiveTemplateX[3] = readATValue();
genericBAdaptiveTemplateY[3] = readATValue();
}
else
{
genericBAdaptiveTemplateX[0] = readATValue();
genericBAdaptiveTemplateY[0] = readATValue();
}
arithmeticDecoder.resetGenericStats(template, null);
arithmeticDecoder.start();
}
bool typicalPredictionGenericDecodingOn = genericRegionFlags.getFlagValue(GenericRegionFlags.TPGDON) != 0;
int length = segmentHeader.getSegmentDataLength();
if (length == -1)
{
/**
* length of data is unknown, so it needs to be determined through examination of the data.
* See 7.2.7 - Segment data length of the JBIG2 specification.
*/
unknownLength = true;
short match1;
short match2;
if (useMMR)
{
// look for 0x00 0x00 (0, 0)
match1 = 0;
match2 = 0;
}
else
{
// look for 0xFF 0xAC (255, 172)
match1 = 255;
match2 = 172;
}
int bytesRead = 0;
while (true)
{
short bite1 = decoder.readbyte();
bytesRead++;
if (bite1 == match1)
{
short bite2 = decoder.readbyte();
bytesRead++;
if (bite2 == match2)
{
length = bytesRead - 2;
break;
}
}
}
decoder.movePointer(-bytesRead);
}
JBIG2Bitmap bitmap = new JBIG2Bitmap(regionBitmapWidth, regionBitmapHeight, arithmeticDecoder, huffmanDecoder, mmrDecoder);
bitmap.clear(0);
bitmap.readBitmap(useMMR, template, typicalPredictionGenericDecodingOn, false, null, genericBAdaptiveTemplateX, genericBAdaptiveTemplateY, useMMR ? 0 : length - 18);
if (inlineImage)
{
PageInformationSegment pageSegment = decoder.findPageSegement(segmentHeader.getPageAssociation());
JBIG2Bitmap pageBitmap = pageSegment.getPageBitmap();
int extCombOp = regionFlags.getFlagValue(RegionFlags.EXTERNAL_COMBINATION_OPERATOR);
if (pageSegment.getPageBitmapHeight() == -1 && regionBitmapYLocation + regionBitmapHeight > pageBitmap.getHeight())
{
pageBitmap.expand(regionBitmapYLocation + regionBitmapHeight,
pageSegment.getPageInformationFlags().getFlagValue(PageInformationFlags.DEFAULT_PIXEL_VALUE));
}
pageBitmap.combine(bitmap, regionBitmapXLocation, regionBitmapYLocation, extCombOp);
}
else
{
bitmap.setBitmapNumber(getSegmentHeader().getSegmentNumber());
decoder.appendBitmap(bitmap);
}
if (unknownLength)
{
decoder.movePointer(4);
}
}
private void readSegments()
{
bool finished = false;
while (!reader.isFinished() && !finished)
{
SegmentHeader segmentHeader = new SegmentHeader();
readSegmentHeader(segmentHeader);
// read the Segment data
Segment segment = null;
int segmentType = segmentHeader.getSegmentType();
int[] referredToSegments = segmentHeader.getReferredToSegments();
int noOfReferredToSegments = segmentHeader.getReferredToSegmentCount();
switch (segmentType)
{
case Segment.SYMBOL_DICTIONARY:
segment = new SymbolDictionarySegment(this);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.INTERMEDIATE_TEXT_REGION:
segment = new TextRegionSegment(this, false);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_TEXT_REGION:
segment = new TextRegionSegment(this, true);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_LOSSLESS_TEXT_REGION:
segment = new TextRegionSegment(this, true);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.PATTERN_DICTIONARY:
segment = new PatternDictionarySegment(this);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.INTERMEDIATE_HALFTONE_REGION:
segment = new HalftoneRegionSegment(this, false);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_HALFTONE_REGION:
segment = new HalftoneRegionSegment(this, true);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_LOSSLESS_HALFTONE_REGION:
segment = new HalftoneRegionSegment(this, true);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.INTERMEDIATE_GENERIC_REGION:
segment = new GenericRegionSegment(this, false);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_GENERIC_REGION:
segment = new GenericRegionSegment(this, true);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_LOSSLESS_GENERIC_REGION:
segment = new GenericRegionSegment(this, true);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.INTERMEDIATE_GENERIC_REFINEMENT_REGION:
segment = new RefinementRegionSegment(this, false, referredToSegments, noOfReferredToSegments);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_GENERIC_REFINEMENT_REGION:
segment = new RefinementRegionSegment(this, true, referredToSegments, noOfReferredToSegments);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.IMMEDIATE_LOSSLESS_GENERIC_REFINEMENT_REGION:
segment = new RefinementRegionSegment(this, true, referredToSegments, noOfReferredToSegments);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.PAGE_INFORMATION:
segment = new PageInformationSegment(this);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.END_OF_PAGE:
continue;
case Segment.END_OF_STRIPE:
segment = new EndOfStripeSegment(this);
segment.setSegmentHeader(segmentHeader);
break;
case Segment.END_OF_FILE:
finished = true;
continue;
case Segment.PROFILES:
break;
case Segment.TABLES:
break;
case Segment.EXTENSION:
segment = new ExtensionSegment(this);
segment.setSegmentHeader(segmentHeader);
break;
default:
break;
}
if (!randomAccessOrganisation)
{
segment.readSegment();
}
segments.Add(segment);
}
if (randomAccessOrganisation)
{
foreach (Segment segment in segments)
{
segment.readSegment();
}
}
}
public override void readSegment()
{
readSegment();
/** read text region Segment flags */
readHalftoneRegionFlags();
short[] buf = new short[4];
decoder.readbyte(buf);
int gridWidth = BinaryOperation.getInt32(buf);
buf = new short[4];
decoder.readbyte(buf);
int gridHeight = BinaryOperation.getInt32(buf);
buf = new short[4];
decoder.readbyte(buf);
int gridX = BinaryOperation.getInt32(buf);
buf = new short[4];
decoder.readbyte(buf);
int gridY = BinaryOperation.getInt32(buf);
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("grid pos and size = " + gridX + ',' + gridY + ' ' + gridWidth + ',' + gridHeight);
}
buf = new short[2];
decoder.readbyte(buf);
int stepX = BinaryOperation.getInt16(buf);
buf = new short[2];
decoder.readbyte(buf);
int stepY = BinaryOperation.getInt16(buf);
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("step size = " + stepX + ',' + stepY);
}
int[] referedToSegments = segmentHeader.getReferredToSegments();
if (referedToSegments.Length != 1)
{
Console.WriteLine("Error in halftone Segment. refSegs should == 1");
}
Segment segment = decoder.findSegment(referedToSegments[0]);
if (segment.getSegmentHeader().getSegmentType() != Segment.PATTERN_DICTIONARY)
{
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("Error in halftone Segment. bad symbol dictionary reference");
}
}
PatternDictionarySegment patternDictionarySegment = (PatternDictionarySegment)segment;
int bitsPerValue = 0, i = 1;
while (i < patternDictionarySegment.getSize())
{
bitsPerValue++;
i <<= 1;
}
JBIG2Bitmap bitmap = patternDictionarySegment.getBitmaps()[0];
long patternWidth = bitmap.getWidth();
long patternHeight = bitmap.getHeight();
if (JBIG2StreamDecoder.debug)
{
Console.WriteLine("pattern size = " + patternWidth + ',' + patternHeight);
}
bool useMMR = halftoneRegionFlags.getFlagValue(HalftoneRegionFlags.H_MMR) != 0;
int template = halftoneRegionFlags.getFlagValue(HalftoneRegionFlags.H_TEMPLATE);
if (!useMMR)
{
arithmeticDecoder.resetGenericStats(template, null);
arithmeticDecoder.start();
}
int halftoneDefaultPixel = halftoneRegionFlags.getFlagValue(HalftoneRegionFlags.H_DEF_PIXEL);
bitmap = new JBIG2Bitmap(regionBitmapWidth, regionBitmapHeight, arithmeticDecoder, huffmanDecoder, mmrDecoder);
bitmap.clear(halftoneDefaultPixel);
bool enableSkip = halftoneRegionFlags.getFlagValue(HalftoneRegionFlags.H_ENABLE_SKIP) != 0;
JBIG2Bitmap skipBitmap = null;
if (enableSkip)
{
skipBitmap = new JBIG2Bitmap(gridWidth, gridHeight, arithmeticDecoder, huffmanDecoder, mmrDecoder);
skipBitmap.clear(0);
for (int y = 0; y < gridHeight; y++)
{
for (int x = 0; x < gridWidth; x++)
{
int xx = gridX + y * stepY + x * stepX;
int yy = gridY + y * stepX - x * stepY;
if (((xx + patternWidth) >> 8) <= 0 || (xx >> 8) >= regionBitmapWidth || ((yy + patternHeight) >> 8) <= 0 || (yy >> 8) >= regionBitmapHeight)
{
skipBitmap.setPixel(y, x, 1);
}
}
}
}
int[] grayScaleImage = new int[gridWidth * gridHeight];
short[] genericBAdaptiveTemplateX = new short[4], genericBAdaptiveTemplateY = new short[4];
genericBAdaptiveTemplateX[0] = (short)(template <= 1 ? 3 : 2);
genericBAdaptiveTemplateY[0] = -1;
genericBAdaptiveTemplateX[1] = -3;
genericBAdaptiveTemplateY[1] = -1;
genericBAdaptiveTemplateX[2] = 2;
genericBAdaptiveTemplateY[2] = -2;
genericBAdaptiveTemplateX[3] = -2;
genericBAdaptiveTemplateY[3] = -2;
JBIG2Bitmap grayBitmap;
for (int j = bitsPerValue - 1; j >= 0; --j)
{
grayBitmap = new JBIG2Bitmap(gridWidth, gridHeight, arithmeticDecoder, huffmanDecoder, mmrDecoder);
grayBitmap.readBitmap(useMMR, template, false, enableSkip, skipBitmap, genericBAdaptiveTemplateX, genericBAdaptiveTemplateY, -1);
i = 0;
for (int row = 0; row < gridHeight; row++)
{
for (int col = 0; col < gridWidth; col++)
{
int bit = grayBitmap.getPixel(col, row) ^ grayScaleImage[i] & 1;
grayScaleImage[i] = (grayScaleImage[i] << 1) | bit;
i++;
}
}
}
int combinationOperator = halftoneRegionFlags.getFlagValue(HalftoneRegionFlags.H_COMB_OP);
i = 0;
for (int col = 0; col < gridHeight; col++)
{
int xx = gridX + col * stepY;
int yy = gridY + col * stepX;
for (int row = 0; row < gridWidth; row++)
{
if (!(enableSkip && skipBitmap.getPixel(col, row) == 1))
{
JBIG2Bitmap patternBitmap = patternDictionarySegment.getBitmaps()[grayScaleImage[i]];
bitmap.combine(patternBitmap, xx >> 8, yy >> 8, combinationOperator);
}
xx += stepX;
yy -= stepY;
i++;
}
}
if (inlineImage)
{
PageInformationSegment pageSegment = decoder.findPageSegement(segmentHeader.getPageAssociation());
JBIG2Bitmap pageBitmap = pageSegment.getPageBitmap();
int externalCombinationOperator = regionFlags.getFlagValue(RegionFlags.EXTERNAL_COMBINATION_OPERATOR);
pageBitmap.combine(bitmap, regionBitmapXLocation, regionBitmapYLocation, externalCombinationOperator);
}
else
{
bitmap.setBitmapNumber(getSegmentHeader().getSegmentNumber());
decoder.appendBitmap(bitmap);
}
}
