diff --git a/core/src/com/google/zxing/pdf417/PDF417Reader.java b/core/src/com/google/zxing/pdf417/PDF417Reader.java index e8756e997..389641d23 100644 --- a/core/src/com/google/zxing/pdf417/PDF417Reader.java +++ b/core/src/com/google/zxing/pdf417/PDF417Reader.java @@ -1,3 +1,19 @@ +/* + * Copyright 2009 ZXing authors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + package com.google.zxing.pdf417; import com.google.zxing.BarcodeFormat; @@ -21,107 +37,107 @@ import java.util.Hashtable; * @author SITA Lab (kevin.osullivan@sita.aero) */ public final class PDF417Reader implements Reader { - private static final ResultPoint[] NO_POINTS = new ResultPoint[0]; - private final Decoder decoder = new Decoder(); + private static final ResultPoint[] NO_POINTS = new ResultPoint[0]; - /** - * Locates and decodes a PDF417 code in an image. - * - * @return a String representing the content encoded by the PDF417 code - * @throws ReaderException if a PDF417 code cannot be found, or cannot be decoded - */ - public Result decode(MonochromeBitmapSource image) throws ReaderException { - return decode(image, null); - } + private final Decoder decoder = new Decoder(); - public Result decode(MonochromeBitmapSource image, Hashtable hints) - throws ReaderException { - DecoderResult decoderResult; - ResultPoint[] points; - if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) { - BitMatrix bits = extractPureBits(image); - decoderResult = decoder.decode(bits); - points = NO_POINTS; - } else { - DetectorResult detectorResult = new Detector(image).detect(); - decoderResult = decoder.decode(detectorResult.getBits()); - points = detectorResult.getPoints(); - } - Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.PDF417); - return result; - } + /** + * Locates and decodes a PDF417 code in an image. + * + * @return a String representing the content encoded by the PDF417 code + * @throws ReaderException if a PDF417 code cannot be found, or cannot be decoded + */ + public Result decode(MonochromeBitmapSource image) throws ReaderException { + return decode(image, null); + } - /** - * This method detects a barcode in a "pure" image -- that is, pure monochrome image - * which contains only an unrotated, unskewed, image of a barcode, with some white border - * around it. This is a specialized method that works exceptionally fast in this special - * case. - */ - private static BitMatrix extractPureBits(MonochromeBitmapSource image) throws ReaderException { - // Now need to determine module size in pixels - - int height = image.getHeight(); - int width = image.getWidth(); - int minDimension = Math.min(height, width); + public Result decode(MonochromeBitmapSource image, Hashtable hints) + throws ReaderException { + DecoderResult decoderResult; + ResultPoint[] points; + if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) { + BitMatrix bits = extractPureBits(image); + decoderResult = decoder.decode(bits); + points = NO_POINTS; + } else { + DetectorResult detectorResult = new Detector(image).detect(); + decoderResult = decoder.decode(detectorResult.getBits()); + points = detectorResult.getPoints(); + } + return new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.PDF417); + } - // First, skip white border by tracking diagonally from the top left down and to the right: - int borderWidth = 0; - while (borderWidth < minDimension && !image.isBlack(borderWidth, borderWidth)) { - borderWidth++; - } - if (borderWidth == minDimension) { - throw ReaderException.getInstance(); - } + /** + * This method detects a barcode in a "pure" image -- that is, pure monochrome image + * which contains only an unrotated, unskewed, image of a barcode, with some white border + * around it. This is a specialized method that works exceptionally fast in this special + * case. + */ + private static BitMatrix extractPureBits(MonochromeBitmapSource image) throws ReaderException { + // Now need to determine module size in pixels - // And then keep tracking across the top-left black module to determine module size - int moduleEnd = borderWidth; - while (moduleEnd < minDimension && image.isBlack(moduleEnd, moduleEnd)) { - moduleEnd++; - } - if (moduleEnd == minDimension) { - throw ReaderException.getInstance(); - } + int height = image.getHeight(); + int width = image.getWidth(); + int minDimension = Math.min(height, width); - int moduleSize = moduleEnd - borderWidth; + // First, skip white border by tracking diagonally from the top left down and to the right: + int borderWidth = 0; + while (borderWidth < minDimension && !image.isBlack(borderWidth, borderWidth)) { + borderWidth++; + } + if (borderWidth == minDimension) { + throw ReaderException.getInstance(); + } - // And now find where the rightmost black module on the first row ends - int rowEndOfSymbol = width - 1; - while (rowEndOfSymbol >= 0 && !image.isBlack(rowEndOfSymbol, borderWidth)) { - rowEndOfSymbol--; - } - if (rowEndOfSymbol < 0) { - throw ReaderException.getInstance(); - } - rowEndOfSymbol++; + // And then keep tracking across the top-left black module to determine module size + int moduleEnd = borderWidth; + while (moduleEnd < minDimension && image.isBlack(moduleEnd, moduleEnd)) { + moduleEnd++; + } + if (moduleEnd == minDimension) { + throw ReaderException.getInstance(); + } - // Make sure width of barcode is a multiple of module size - if ((rowEndOfSymbol - borderWidth) % moduleSize != 0) { - throw ReaderException.getInstance(); - } - int dimension = (rowEndOfSymbol - borderWidth) / moduleSize; + int moduleSize = moduleEnd - borderWidth; - // Push in the "border" by half the module width so that we start - // sampling in the middle of the module. Just in case the image is a - // little off, this will help recover. - borderWidth += moduleSize >> 1; + // And now find where the rightmost black module on the first row ends + int rowEndOfSymbol = width - 1; + while (rowEndOfSymbol >= 0 && !image.isBlack(rowEndOfSymbol, borderWidth)) { + rowEndOfSymbol--; + } + if (rowEndOfSymbol < 0) { + throw ReaderException.getInstance(); + } + rowEndOfSymbol++; - int sampleDimension = borderWidth + (dimension - 1) * moduleSize; - if (sampleDimension >= width || sampleDimension >= height) { - throw ReaderException.getInstance(); - } + // Make sure width of barcode is a multiple of module size + if ((rowEndOfSymbol - borderWidth) % moduleSize != 0) { + throw ReaderException.getInstance(); + } + int dimension = (rowEndOfSymbol - borderWidth) / moduleSize; - // Now just read off the bits - BitMatrix bits = new BitMatrix(dimension); - for (int i = 0; i < dimension; i++) { - int iOffset = borderWidth + i * moduleSize; - for (int j = 0; j < dimension; j++) { - if (image.isBlack(borderWidth + j * moduleSize, iOffset)) { - bits.set(i, j); - } - } - } - return bits; - } + // Push in the "border" by half the module width so that we start + // sampling in the middle of the module. Just in case the image is a + // little off, this will help recover. + borderWidth += moduleSize >> 1; + + int sampleDimension = borderWidth + (dimension - 1) * moduleSize; + if (sampleDimension >= width || sampleDimension >= height) { + throw ReaderException.getInstance(); + } + + // Now just read off the bits + BitMatrix bits = new BitMatrix(dimension); + for (int i = 0; i < dimension; i++) { + int iOffset = borderWidth + i * moduleSize; + for (int j = 0; j < dimension; j++) { + if (image.isBlack(borderWidth + j * moduleSize, iOffset)) { + bits.set(i, j); + } + } + } + return bits; + } } diff --git a/core/src/com/google/zxing/pdf417/decoder/BitMatrixParser.java b/core/src/com/google/zxing/pdf417/decoder/BitMatrixParser.java index ebd9e6425..2d2958415 100644 --- a/core/src/com/google/zxing/pdf417/decoder/BitMatrixParser.java +++ b/core/src/com/google/zxing/pdf417/decoder/BitMatrixParser.java @@ -1,5 +1,5 @@ /* - * Copyright 2007 ZXing authors + * Copyright 2009 ZXing authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -13,6 +13,7 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + package com.google.zxing.pdf417.decoder; import com.google.zxing.ReaderException; @@ -22,1190 +23,1152 @@ import com.google.zxing.common.BitMatrix; *

* This class parses the BitMatrix image into codewords. *

- * + * * @author SITA Lab (kevin.osullivan@sita.aero) */ final class BitMatrixParser { - public static final boolean debug = false; - private static final int MAX_ROW_DIFFERENCE = 6; - private static final int MAX_ROWS = 90; - private static final int MAX_COLUMNS = 30; - // Maximum Codewords (Data + Error) - private static final int MAX_CW_CAPACITY = 929; - private static final int MODULES_IN_SYMBOL = 17; - private final BitMatrix bitMatrix; - int rows = 0; - int columns = 0; + private static final int MAX_ROW_DIFFERENCE = 6; + private static final int MAX_ROWS = 90; + private static final int MAX_COLUMNS = 30; + // Maximum Codewords (Data + Error) + private static final int MAX_CW_CAPACITY = 929; + private static final int MODULES_IN_SYMBOL = 17; - int leftColumnECData = 0; - int rightColumnECData = 0; - int eraseCount = 0; - int erasures[] = null; - int ecLevel = -1; + private final BitMatrix bitMatrix; + private int rows = 0; + private int columns = 0; - BitMatrixParser(BitMatrix bitMatrix) { - this.bitMatrix = bitMatrix; - } + private int leftColumnECData = 0; + private int rightColumnECData = 0; + private int eraseCount = 0; + private int[] erasures = null; + private int ecLevel = -1; - /** - * To ensure separability of rows, codewords of consecutive rows belong to - * different subsets of all possible codewords. This routine scans the - * symbols in the barcode. When it finds a number of consecutive rows which - * are the same, it assumes that this is a row of codewords and processes - * them into a codeword array. - * - * @return an array of codewords. - */ - int[] readCodewords() throws ReaderException { - int width = bitMatrix.getDimension(); - // TODO should be a rectangular matrix - int height = width; + BitMatrixParser(BitMatrix bitMatrix) { + this.bitMatrix = bitMatrix; + } - int rowHeight = 0; - int rowNumber = 0; - boolean rowInProgress = false; - int matchingConsecutiveScans = 0; + /** + * To ensure separability of rows, codewords of consecutive rows belong to + * different subsets of all possible codewords. This routine scans the + * symbols in the barcode. When it finds a number of consecutive rows which + * are the same, it assumes that this is a row of codewords and processes + * them into a codeword array. + * + * @return an array of codewords. + */ + int[] readCodewords() throws ReaderException { + int width = bitMatrix.getDimension(); + // TODO should be a rectangular matrix + int height = width; - int next = 0; - int codewords[] = new int[MAX_CW_CAPACITY]; - erasures = new int[MAX_CW_CAPACITY]; + erasures = new int[MAX_CW_CAPACITY]; - // Get the number of pixels in a module across the X dimension - //float moduleWidth = bitMatrix.getModuleWidth(); - float moduleWidth = 1.0f; // Image has been sampled and reduced + // Get the number of pixels in a module across the X dimension + //float moduleWidth = bitMatrix.getModuleWidth(); + float moduleWidth = 1.0f; // Image has been sampled and reduced - int rowCounters[] = new int[width]; - for (int i = 1; i < height; i++) { - if (rowNumber >= MAX_ROWS) { - // Something is wrong, since we have exceeded - // the maximum rows in the specification. - // TODO Maybe return error code - return null; - } - int rowDifference = 0; - // Scan a line of modules and check the - // difference between this and the previous line - for (int j = 0; j < width; j++) { - // Accumulate differences between this line and the - // previous line. - if (bitMatrix.get(i, j) != bitMatrix.get(i - 1, j)) { - rowDifference++; - } - } - if (rowDifference <= moduleWidth * MAX_ROW_DIFFERENCE) { - for (int j = 0; j < width; j++) { - // Accumulate the black pixels on this line - if (bitMatrix.get(i, j)) { - rowCounters[j]++; - } - } - // Increment the number of consecutive rows of pixels - // that are more or less the same - matchingConsecutiveScans++; - // Height of a row is a multiple of the module size in pixels - // Usually at least 3 times the module size - if (matchingConsecutiveScans >= moduleWidth * 2) { // MGMG - // We have some previous matches as well as a match here - // Set processing a unique row. - rowInProgress = true; - } - } else { - if (rowInProgress) { - // Process Row - if (debug) - System.out.println("Row Height=" + rowHeight + " Row Number=" - + rowNumber); - next = processRow(rowCounters, rowNumber, rowHeight, - moduleWidth, codewords, next); - if (next == -1) { - // Something is wrong, since we have exceeded - // the maximum columns in the specification. - // TODO Maybe return error code - return null; - } - // Reinitialize the row counters. - for (int j = 0; j < rowCounters.length; j++) { - rowCounters[j] = 0; - } - rowNumber++; - rowHeight = 0; - } - matchingConsecutiveScans = 0; - rowInProgress = false; - } - rowHeight++; + int[] rowCounters = new int[width]; + int[] codewords = new int[MAX_CW_CAPACITY]; + int next = 0; + int matchingConsecutiveScans = 0; + boolean rowInProgress = false; + int rowNumber = 0; + int rowHeight = 0; + for (int i = 1; i < height; i++) { + if (rowNumber >= MAX_ROWS) { + // Something is wrong, since we have exceeded + // the maximum rows in the specification. + // TODO Maybe return error code + return null; } - // Check for a row that was in progress before we exited above. - if (rowInProgress) { - // Process Row - if (debug) - System.out.println("Row Height=" + rowHeight + " Row Number=" - + rowNumber); - if (rowNumber >= MAX_ROWS) { - // Something is wrong, since we have exceeded - // the maximum rows in the specification. - // TODO Maybe return error code - return null; - } - next = processRow(rowCounters, rowNumber, rowHeight, moduleWidth, - codewords, next); - rowNumber++; - rows = rowNumber; + int rowDifference = 0; + // Scan a line of modules and check the + // difference between this and the previous line + for (int j = 0; j < width; j++) { + // Accumulate differences between this line and the + // previous line. + if (bitMatrix.get(i, j) != bitMatrix.get(i - 1, j)) { + rowDifference++; + } } - if (debug) - System.out.println("Errors=" + eraseCount); - erasures = trimArray(erasures, eraseCount); - return trimArray(codewords, next); - } - - /** - * Trim the array to the required size. - * - * @param array - * the array - * @param size - * the size to trim it to - * @return the new trimmed array - */ - private int[] trimArray(int array[], int size) { - if (size > 0) { - int a[] = new int[size]; - for (int i = 0; i < size; i++) { - a[i] = array[i]; - } - return a; + if (rowDifference <= moduleWidth * MAX_ROW_DIFFERENCE) { + for (int j = 0; j < width; j++) { + // Accumulate the black pixels on this line + if (bitMatrix.get(i, j)) { + rowCounters[j]++; + } + } + // Increment the number of consecutive rows of pixels + // that are more or less the same + matchingConsecutiveScans++; + // Height of a row is a multiple of the module size in pixels + // Usually at least 3 times the module size + if (matchingConsecutiveScans >= moduleWidth * 2) { // MGMG + // We have some previous matches as well as a match here + // Set processing a unique row. + rowInProgress = true; + } } else { - return null; + if (rowInProgress) { + // Process Row + next = processRow(rowCounters, rowNumber, rowHeight, + moduleWidth, codewords, next); + if (next == -1) { + // Something is wrong, since we have exceeded + // the maximum columns in the specification. + // TODO Maybe return error code + return null; + } + // Reinitialize the row counters. + for (int j = 0; j < rowCounters.length; j++) { + rowCounters[j] = 0; + } + rowNumber++; + rowHeight = 0; + } + matchingConsecutiveScans = 0; + rowInProgress = false; } - } + rowHeight++; + } + // Check for a row that was in progress before we exited above. + if (rowInProgress) { + // Process Row + if (rowNumber >= MAX_ROWS) { + // Something is wrong, since we have exceeded + // the maximum rows in the specification. + // TODO Maybe return error code + return null; + } + next = processRow(rowCounters, rowNumber, rowHeight, moduleWidth, + codewords, next); + rowNumber++; + rows = rowNumber; + } + erasures = trimArray(erasures, eraseCount); + return trimArray(codewords, next); + } - /** - * Convert the symbols in the row to codewords. - * - * @param rowCounters - * an array containing the counts of black pixels for each column - * in the row. - * @param rowNumber - * the current row number of codewords. - * @param rowHeight - * the height of this row in pixels. - * @param moduleWidth - * the size of a module in pixels. - * @param codewords - * the codeword array to save codewords into. - * @param next - * the next available index into the codewords array. - * @return the next available index into the codeword array after processing - * this row. - * @throws ReaderException - */ - /* - * Each PDF417 symbol character consists of four bar elements and four space - * elements, each of which can be one to six modules wide. The four bar and - * four space elements shall measure 17 modules in total. - */ - int processRow(int rowCounters[], int rowNumber, int rowHeight, - float moduleWidth, int codewords[], int next) throws ReaderException { - int width = bitMatrix.getDimension(); - int columnNumber = 0; - long symbol = 0; - for (int i = 0; i < width; i += MODULES_IN_SYMBOL) { - for (int mask = MODULES_IN_SYMBOL - 1; mask >= 0; mask--) { - if (rowCounters[i + (MODULES_IN_SYMBOL - 1 - mask)] >= rowHeight / 2) { - symbol |= 1 << mask; - } - } - if (columnNumber > 0) { - int cw = getCodeword(symbol, rowNumber); - // if (debug) System.out.println(" " + Long.toBinaryString(symbol) + - // " cw=" +cw + " ColumnNumber=" +columnNumber + "i=" +i); - if (cw < 0 && i < width - MODULES_IN_SYMBOL) { - // Skip errors on the Right row indicator column - erasures[eraseCount] = next; - next++; - eraseCount++; - } else { - codewords[next++] = cw; - } - } else { - // Left row indicator column - int cw = getCodeword(symbol, rowNumber); - // if (debug) System.out.println(" " + Long.toBinaryString(symbol) + - // " cw=" +cw + " ColumnNumber=" +columnNumber + "i=" +i); - if (ecLevel < 0) { - switch (rowNumber % 3) { - case 0: - break; - case 1: - leftColumnECData = cw; - break; - case 2: - break; - } - } - } - symbol = 0; - columns = columnNumber; - columnNumber++; + /** + * Trim the array to the required size. + * + * @param array the array + * @param size the size to trim it to + * @return the new trimmed array + */ + private static int[] trimArray(int[] array, int size) { + if (size > 0) { + int a[] = new int[size]; + for (int i = 0; i < size; i++) { + a[i] = array[i]; } - if (columnNumber > 1) { - // Right row indicator column is in codeword[next] - columns--; - // Overwrite the last codeword i.e. Right Row Indicator - --next; - if (ecLevel < 0) { - switch (rowNumber % 3) { + return a; + } else { + return null; + } + } + + /** + * Convert the symbols in the row to codewords. + * + * @param rowCounters an array containing the counts of black pixels for each column + * in the row. + * @param rowNumber the current row number of codewords. + * @param rowHeight the height of this row in pixels. + * @param moduleWidth the size of a module in pixels. + * @param codewords the codeword array to save codewords into. + * @param next the next available index into the codewords array. + * @return the next available index into the codeword array after processing + * this row. + * @throws ReaderException + */ + /* + * Each PDF417 symbol character consists of four bar elements and four space + * elements, each of which can be one to six modules wide. The four bar and + * four space elements shall measure 17 modules in total. + */ + int processRow(int[] rowCounters, int rowNumber, int rowHeight, + float moduleWidth, int[] codewords, int next) throws ReaderException { + int width = bitMatrix.getDimension(); + int columnNumber = 0; + long symbol = 0; + for (int i = 0; i < width; i += MODULES_IN_SYMBOL) { + for (int mask = MODULES_IN_SYMBOL - 1; mask >= 0; mask--) { + if (rowCounters[i + (MODULES_IN_SYMBOL - 1 - mask)] >= rowHeight / 2) { + symbol |= 1 << mask; + } + } + if (columnNumber > 0) { + int cw = getCodeword(symbol, rowNumber); + // if (debug) System.out.println(" " + Long.toBinaryString(symbol) + + // " cw=" +cw + " ColumnNumber=" +columnNumber + "i=" +i); + if (cw < 0 && i < width - MODULES_IN_SYMBOL) { + // Skip errors on the Right row indicator column + erasures[eraseCount] = next; + next++; + eraseCount++; + } else { + codewords[next++] = cw; + } + } else { + // Left row indicator column + int cw = getCodeword(symbol, rowNumber); + // if (debug) System.out.println(" " + Long.toBinaryString(symbol) + + // " cw=" +cw + " ColumnNumber=" +columnNumber + "i=" +i); + if (ecLevel < 0) { + switch (rowNumber % 3) { case 0: - break; + break; case 1: - break; + leftColumnECData = cw; + break; case 2: - rightColumnECData = codewords[next]; - if (rightColumnECData == leftColumnECData - && leftColumnECData != 0) { - ecLevel = ((rightColumnECData % 30) - rows % 3) / 3; - } - break; - } - } - codewords[next] = 0; + break; + } + } } - return next; - } - - /** - * Build a symbol from the pixels - * - * @param counters - * array of pixel counter corresponding to each Bar/Space pattern. - * @param rowNumber - * @return the symbol - */ - /* - * Each symbol character is defined by an 8-digit bar-space sequence which - * represents the module widths of the eight elements of that symbol - * character. - */ - private long getSymbol(int counters[], int rowNumber, float moduleWidth) { - int symbol = 0; - int pixelsInSymbol = 0; - for (int j = 0; j < counters.length; j++) { - pixelsInSymbol += counters[j]; - } - float avgModuleWidth = (pixelsInSymbol / 17.0f); - if (debug) - System.out.println("Average Module Width = " + avgModuleWidth); - boolean toggle = true; - int shift = 0; - for (int j = 0; j < counters.length; j++) { - if (counters[j] < moduleWidth && counters[j] > 0) { - // Give a very narrow bar/space a chance - counters[j] = (int) moduleWidth; - } - // Calculate number of modules in the symbol. - // int modules = (int)(counters[j]/moduleWidth); - // int modules = round(counters[j]/moduleWidth); - int modules = round(counters[j] / avgModuleWidth); - if (modules > 6) { - // Maximum size is 6 modules - modules = 6; - } else if (modules < 1) { - modules = 1; - } - if (toggle) { - for (int k = 0; k < modules; k++) { - symbol |= 1 << (16 - k - shift); - } - toggle = false; - } else { - toggle = true; - } - shift += modules; - } - return symbol; - } - - /** - * Translate the symbol into a codeword. - * - * @param symbol - * @param row - * @return the codeword corresponding to the symbol. - * @throws ReaderException - */ - private int getCodeword(long symbol, int row) throws ReaderException { - long cw = 0; - - long sym = symbol; - sym &= 0x3ffff; - int i = findCodewordIndex(sym); - if (i != -1) { - cw = codewordTable[i] - 1; - cw = cw % 929; - } else { - if (debug) - System.out.println("UNABLE TO FIND " + symbol); // Long.toBinaryString(symbol)); - return -1; - } - return (int) cw; - } - - /** - * Use a binary search to find the index of the codeword corresponding to - * this symbol. - * - * @param symbol - * the symbol from the barcode. - * @return the index into the codeword table. - */ - private int findCodewordIndex(long symbol) throws ReaderException { - int first = 0; - int upto = symbolTable.length; - while (first < upto) { - int mid = (first + upto) / 2; // Compute mid point. - if (symbol < symbolTable[mid]) { - upto = mid; // repeat search in bottom half. - } else if (symbol > symbolTable[mid]) { - first = mid + 1; // Repeat search in top half. - } else { - return mid; // Found it. return position - } - } - return -1; - // if (debug) System.out.println("Failed to find codeword for Symbol=" + - // symbol); - } - - /** - * Ends up being a bit faster than Math.round(). This merely rounds its - * argument to the nearest int, where x.5 rounds up. - */ - private static int round(float d) { - return (int) (d + 0.5f); - } - - /** - * Returns the number of codewords flagged as erasures. - */ - public int getEraseCount() { - return eraseCount; - } - - /** - * Returns an array of locations representing the erasures. - */ - public int[] getErasures() { - return erasures; - } - - public int getECLevel() { - return ecLevel; - } - - /** - * Convert the symbols in the row to codewords. - * - * @param rowCounters - * an array containing the counts of black pixels for each column - * in the row. - * @param rowNumber - * the current row number of codewords. - * @param rowHeight - * the height of this row in pixels. - * @param moduleWidth - * the size of a module in pixels. - * @param codewords - * the codeword array to save codewords into. - * @param next - * the next available index into the codewords array. - * @return the next available index into the codeword array after processing - * this row. - * @throws ReaderException - */ - /* - * Each PDF417 symbol character consists of four bar elements and four space - * elements, each of which can be one to six modules wide. The four bar and - * four space elements shall measure 17 modules in total. - */ - int processRow1(int rowCounters[], int rowNumber, int rowHeight, - float moduleWidth, int codewords[], int next) throws ReaderException { - int width = bitMatrix.getDimension(); - int columnNumber = 0; - int firstBlack = 0; - - for (firstBlack = 0; firstBlack < width; firstBlack++) { - // Step forward until we find the first black pixels - if (rowCounters[firstBlack] >= rowHeight / 2) { + symbol = 0; + columns = columnNumber; + columnNumber++; + } + if (columnNumber > 1) { + // Right row indicator column is in codeword[next] + columns--; + // Overwrite the last codeword i.e. Right Row Indicator + --next; + if (ecLevel < 0) { + switch (rowNumber % 3) { + case 0: break; - } + case 1: + break; + case 2: + rightColumnECData = codewords[next]; + if (rightColumnECData == leftColumnECData + && leftColumnECData != 0) { + ecLevel = ((rightColumnECData % 30) - rows % 3) / 3; + } + break; + } } + codewords[next] = 0; + } + return next; + } - int counters[] = new int[8]; - int state = 0; // In black pixels, looking for white, first or second time - long symbol = 0; - for (int i = firstBlack; i < width; i++) { - if (state == 1 || state == 3 || state == 5 || state == 7) { // In white - // pixels, - // looking - // for - // black - // If more than half the column is black - if (rowCounters[i] >= rowHeight / 2 || i == width - 1) { - if (i == width - 1) { - counters[state]++; - } - // In black pixels or the end of a row - state++; - if (state < 8) { - // Don't count the last one - counters[state]++; - } - } else { - counters[state]++; - } - } else { - if (rowCounters[i] < rowHeight / 2) { - // Found white pixels - state++; - if (state == 7 && i == width - 1) { - // Its found white pixels at the end of the row, - // give it a chance to exit gracefully - i--; - } else { - // Found white pixels - counters[state]++; - } - } else { - if (state < 8) { - // Still in black pixels - counters[state]++; - } - } - } - if (state == 8) { // Found black, white, black, white, black, white, - // black, white and stumbled back onto black; done - if (columnNumber >= MAX_COLUMNS) { - // Something is wrong, since we have exceeded - // the maximum columns in the specification. - // TODO Maybe return error code - return -1; - } - if (columnNumber > 0) { - symbol = getSymbol(counters, rowNumber, moduleWidth); - int cw = getCodeword(symbol, rowNumber); - // if (debug) System.out.println(" " + - // Long.toBinaryString(symbol) + " cw=" +cw + " ColumnNumber=" - // +columnNumber + "i=" +i); - if (cw < 0) { - erasures[eraseCount] = next; - next++; - eraseCount++; - } else { - codewords[next++] = cw; - } - } else { - // Left row indicator column - symbol = getSymbol(counters, rowNumber, moduleWidth); - int cw = getCodeword(symbol, rowNumber); - if (debug) { - System.out.println("Left Column CW=" + cw + " Cluster=" - + rowNumber % 3); - } - if (ecLevel < 0) { - switch (rowNumber % 3) { - case 0: - break; - case 1: - leftColumnECData = cw; - break; - case 2: - break; - } - } - } - // Step back so that this pixel can be examined during the next - // pass. + /** + * Build a symbol from the pixels + * + * @param counters array of pixel counter corresponding to each Bar/Space pattern. + * @param rowNumber + * @return the symbol + */ + /* + * Each symbol character is defined by an 8-digit bar-space sequence which + * represents the module widths of the eight elements of that symbol + * character. + */ + private static long getSymbol(int[] counters, int rowNumber, float moduleWidth) { + int pixelsInSymbol = 0; + for (int j = 0; j < counters.length; j++) { + pixelsInSymbol += counters[j]; + } + float avgModuleWidth = (pixelsInSymbol / 17.0f); + boolean toggle = true; + int shift = 0; + int symbol = 0; + for (int j = 0; j < counters.length; j++) { + if (counters[j] < moduleWidth && counters[j] > 0) { + // Give a very narrow bar/space a chance + counters[j] = (int) moduleWidth; + } + // Calculate number of modules in the symbol. + // int modules = (int)(counters[j]/moduleWidth); + // int modules = round(counters[j]/moduleWidth); + int modules = round(counters[j] / avgModuleWidth); + if (modules > 6) { + // Maximum size is 6 modules + modules = 6; + } else if (modules < 1) { + modules = 1; + } + if (toggle) { + for (int k = 0; k < modules; k++) { + symbol |= 1 << (16 - k - shift); + } + toggle = false; + } else { + toggle = true; + } + shift += modules; + } + return symbol; + } + + /** + * Translate the symbol into a codeword. + * + * @param symbol + * @param row + * @return the codeword corresponding to the symbol. + * @throws ReaderException + */ + private int getCodeword(long symbol, int row) throws ReaderException { + + long sym = symbol; + sym &= 0x3ffff; + int i = findCodewordIndex(sym); + long cw = 0; + if (i == -1) { + return -1; + } else { + cw = CODEWORD_TABLE[i] - 1; + cw %= 929; + } + return (int) cw; + } + + /** + * Use a binary search to find the index of the codeword corresponding to + * this symbol. + * + * @param symbol the symbol from the barcode. + * @return the index into the codeword table. + */ + private int findCodewordIndex(long symbol) { + int first = 0; + int upto = SYMBOL_TABLE.length; + while (first < upto) { + int mid = (first + upto) / 2; // Compute mid point. + if (symbol < SYMBOL_TABLE[mid]) { + upto = mid; // repeat search in bottom half. + } else if (symbol > SYMBOL_TABLE[mid]) { + first = mid + 1; // Repeat search in top half. + } else { + return mid; // Found it. return position + } + } + return -1; + // if (debug) System.out.println("Failed to find codeword for Symbol=" + + // symbol); + } + + /** + * Ends up being a bit faster than Math.round(). This merely rounds its + * argument to the nearest int, where x.5 rounds up. + */ + private static int round(float d) { + return (int) (d + 0.5f); + } + + /** + * Returns the number of codewords flagged as erasures. + */ + public int getEraseCount() { + return eraseCount; + } + + /** + * Returns an array of locations representing the erasures. + */ + public int[] getErasures() { + return erasures; + } + + public int getECLevel() { + return ecLevel; + } + + /** + * Convert the symbols in the row to codewords. + * Each PDF417 symbol character consists of four bar elements and four space + * elements, each of which can be one to six modules wide. The four bar and + * four space elements shall measure 17 modules in total. + * + * @param rowCounters an array containing the counts of black pixels for each column + * in the row. + * @param rowNumber the current row number of codewords. + * @param rowHeight the height of this row in pixels. + * @param moduleWidth the size of a module in pixels. + * @param codewords the codeword array to save codewords into. + * @param next the next available index into the codewords array. + * @return the next available index into the codeword array after processing + * this row. + * @throws ReaderException + */ + int processRow1(int[] rowCounters, int rowNumber, int rowHeight, + float moduleWidth, int[] codewords, int next) throws ReaderException { + int width = bitMatrix.getDimension(); + int firstBlack = 0; + + for (firstBlack = 0; firstBlack < width; firstBlack++) { + // Step forward until we find the first black pixels + if (rowCounters[firstBlack] >= rowHeight / 2) { + break; + } + } + + int[] counters = new int[8]; + int state = 0; // In black pixels, looking for white, first or second time + long symbol = 0; + int columnNumber = 0; + for (int i = firstBlack; i < width; i++) { + if (state == 1 || state == 3 || state == 5 || state == 7) { // In white + // pixels, + // looking + // for + // black + // If more than half the column is black + if (rowCounters[i] >= rowHeight / 2 || i == width - 1) { + if (i == width - 1) { + counters[state]++; + } + // In black pixels or the end of a row + state++; + if (state < 8) { + // Don't count the last one + counters[state]++; + } + } else { + counters[state]++; + } + } else { + if (rowCounters[i] < rowHeight / 2) { + // Found white pixels + state++; + if (state == 7 && i == width - 1) { + // Its found white pixels at the end of the row, + // give it a chance to exit gracefully i--; - counters = new int[8]; - columns = columnNumber; - columnNumber++; - /* - * // Introduce some errors if (rowNumber == 0 && columnNumber == 4) - * { codewords[next-1] = 0; erasures[eraseCount] = next-1; - * eraseCount++; } if (rowNumber == 0 && columnNumber == 6) { - * codewords[next-1] = 10; erasures[eraseCount] = next-1; - * eraseCount++; } if (rowNumber == 0 && columnNumber == 8) { - * codewords[next-1] = 10; erasures[eraseCount] = next-1; - * eraseCount++; } - */ - state = 0; - symbol = 0; - } + } else { + // Found white pixels + counters[state]++; + } + } else { + if (state < 8) { + // Still in black pixels + counters[state]++; + } + } } - if (columnNumber > 1) { - // Right row indicator column is in codeword[next] - columns--; - // Overwrite the last codeword i.e. Right Row Indicator - --next; - if (ecLevel < 0) { + if (state == 8) { // Found black, white, black, white, black, white, + // black, white and stumbled back onto black; done + if (columnNumber >= MAX_COLUMNS) { + // Something is wrong, since we have exceeded + // the maximum columns in the specification. + // TODO Maybe return error code + return -1; + } + if (columnNumber > 0) { + symbol = getSymbol(counters, rowNumber, moduleWidth); + int cw = getCodeword(symbol, rowNumber); + // if (debug) System.out.println(" " + + // Long.toBinaryString(symbol) + " cw=" +cw + " ColumnNumber=" + // +columnNumber + "i=" +i); + if (cw < 0) { + erasures[eraseCount] = next; + next++; + eraseCount++; + } else { + codewords[next++] = cw; + } + } else { + // Left row indicator column + symbol = getSymbol(counters, rowNumber, moduleWidth); + int cw = getCodeword(symbol, rowNumber); + if (ecLevel < 0) { switch (rowNumber % 3) { - case 0: - break; - case 1: - break; - case 2: - rightColumnECData = codewords[next]; - if (rightColumnECData == leftColumnECData - && leftColumnECData != 0) { - ecLevel = ((rightColumnECData % 30) - rows % 3) / 3; - } - break; + case 0: + break; + case 1: + leftColumnECData = cw; + break; + case 2: + break; } - } - codewords[next] = 0; - if (debug) - System.out.println("Right Column CW=" + codewords[next] - + " Cluster=" + rowNumber % 3); + } + } + // Step back so that this pixel can be examined during the next + // pass. + i--; + counters = new int[8]; + columns = columnNumber; + columnNumber++; + /* + * // Introduce some errors if (rowNumber == 0 && columnNumber == 4) + * { codewords[next-1] = 0; erasures[eraseCount] = next-1; + * eraseCount++; } if (rowNumber == 0 && columnNumber == 6) { + * codewords[next-1] = 10; erasures[eraseCount] = next-1; + * eraseCount++; } if (rowNumber == 0 && columnNumber == 8) { + * codewords[next-1] = 10; erasures[eraseCount] = next-1; + * eraseCount++; } + */ + state = 0; + symbol = 0; } - return next; - } + } + if (columnNumber > 1) { + // Right row indicator column is in codeword[next] + columns--; + // Overwrite the last codeword i.e. Right Row Indicator + --next; + if (ecLevel < 0) { + switch (rowNumber % 3) { + case 0: + break; + case 1: + break; + case 2: + rightColumnECData = codewords[next]; + if (rightColumnECData == leftColumnECData + && leftColumnECData != 0) { + ecLevel = ((rightColumnECData % 30) - rows % 3) / 3; + } + break; + } + } + codewords[next] = 0; + } + return next; + } - /** - * The sorted table of all possible symbols. Extracted from the PDF417 - * specification. The index of a symbol in this table corresponds to the - * index into the codeword table. - */ - private static final int symbolTable[] = { 0x1025e, 0x1027a, 0x1029e, - 0x102bc, 0x102f2, 0x102f4, 0x1032e, 0x1034e, 0x1035c, 0x10396, - 0x103a6, 0x103ac, 0x10422, 0x10428, 0x10436, 0x10442, 0x10444, - 0x10448, 0x10450, 0x1045e, 0x10466, 0x1046c, 0x1047a, 0x10482, - 0x1049e, 0x104a0, 0x104bc, 0x104c6, 0x104d8, 0x104ee, 0x104f2, - 0x104f4, 0x10504, 0x10508, 0x10510, 0x1051e, 0x10520, 0x1053c, - 0x10540, 0x10578, 0x10586, 0x1058c, 0x10598, 0x105b0, 0x105be, - 0x105ce, 0x105dc, 0x105e2, 0x105e4, 0x105e8, 0x105f6, 0x1062e, - 0x1064e, 0x1065c, 0x1068e, 0x1069c, 0x106b8, 0x106de, 0x106fa, - 0x10716, 0x10726, 0x1072c, 0x10746, 0x1074c, 0x10758, 0x1076e, - 0x10792, 0x10794, 0x107a2, 0x107a4, 0x107a8, 0x107b6, 0x10822, - 0x10828, 0x10842, 0x10848, 0x10850, 0x1085e, 0x10866, 0x1086c, - 0x1087a, 0x10882, 0x10884, 0x10890, 0x1089e, 0x108a0, 0x108bc, - 0x108c6, 0x108cc, 0x108d8, 0x108ee, 0x108f2, 0x108f4, 0x10902, - 0x10908, 0x1091e, 0x10920, 0x1093c, 0x10940, 0x10978, 0x10986, - 0x10998, 0x109b0, 0x109be, 0x109ce, 0x109dc, 0x109e2, 0x109e4, - 0x109e8, 0x109f6, 0x10a08, 0x10a10, 0x10a1e, 0x10a20, 0x10a3c, - 0x10a40, 0x10a78, 0x10af0, 0x10b06, 0x10b0c, 0x10b18, 0x10b30, - 0x10b3e, 0x10b60, 0x10b7c, 0x10b8e, 0x10b9c, 0x10bb8, 0x10bc2, - 0x10bc4, 0x10bc8, 0x10bd0, 0x10bde, 0x10be6, 0x10bec, 0x10c2e, - 0x10c4e, 0x10c5c, 0x10c62, 0x10c64, 0x10c68, 0x10c76, 0x10c8e, - 0x10c9c, 0x10cb8, 0x10cc2, 0x10cc4, 0x10cc8, 0x10cd0, 0x10cde, - 0x10ce6, 0x10cec, 0x10cfa, 0x10d0e, 0x10d1c, 0x10d38, 0x10d70, - 0x10d7e, 0x10d82, 0x10d84, 0x10d88, 0x10d90, 0x10d9e, 0x10da0, - 0x10dbc, 0x10dc6, 0x10dcc, 0x10dd8, 0x10dee, 0x10df2, 0x10df4, - 0x10e16, 0x10e26, 0x10e2c, 0x10e46, 0x10e58, 0x10e6e, 0x10e86, - 0x10e8c, 0x10e98, 0x10eb0, 0x10ebe, 0x10ece, 0x10edc, 0x10f0a, - 0x10f12, 0x10f14, 0x10f22, 0x10f28, 0x10f36, 0x10f42, 0x10f44, - 0x10f48, 0x10f50, 0x10f5e, 0x10f66, 0x10f6c, 0x10fb2, 0x10fb4, - 0x11022, 0x11028, 0x11042, 0x11048, 0x11050, 0x1105e, 0x1107a, - 0x11082, 0x11084, 0x11090, 0x1109e, 0x110a0, 0x110bc, 0x110c6, - 0x110cc, 0x110d8, 0x110ee, 0x110f2, 0x110f4, 0x11102, 0x1111e, - 0x11120, 0x1113c, 0x11140, 0x11178, 0x11186, 0x11198, 0x111b0, - 0x111be, 0x111ce, 0x111dc, 0x111e2, 0x111e4, 0x111e8, 0x111f6, - 0x11208, 0x1121e, 0x11220, 0x11278, 0x112f0, 0x1130c, 0x11330, - 0x1133e, 0x11360, 0x1137c, 0x1138e, 0x1139c, 0x113b8, 0x113c2, - 0x113c8, 0x113d0, 0x113de, 0x113e6, 0x113ec, 0x11408, 0x11410, - 0x1141e, 0x11420, 0x1143c, 0x11440, 0x11478, 0x114f0, 0x115e0, - 0x1160c, 0x11618, 0x11630, 0x1163e, 0x11660, 0x1167c, 0x116c0, - 0x116f8, 0x1171c, 0x11738, 0x11770, 0x1177e, 0x11782, 0x11784, - 0x11788, 0x11790, 0x1179e, 0x117a0, 0x117bc, 0x117c6, 0x117cc, - 0x117d8, 0x117ee, 0x1182e, 0x11834, 0x1184e, 0x1185c, 0x11862, - 0x11864, 0x11868, 0x11876, 0x1188e, 0x1189c, 0x118b8, 0x118c2, - 0x118c8, 0x118d0, 0x118de, 0x118e6, 0x118ec, 0x118fa, 0x1190e, - 0x1191c, 0x11938, 0x11970, 0x1197e, 0x11982, 0x11984, 0x11990, - 0x1199e, 0x119a0, 0x119bc, 0x119c6, 0x119cc, 0x119d8, 0x119ee, - 0x119f2, 0x119f4, 0x11a0e, 0x11a1c, 0x11a38, 0x11a70, 0x11a7e, - 0x11ae0, 0x11afc, 0x11b08, 0x11b10, 0x11b1e, 0x11b20, 0x11b3c, - 0x11b40, 0x11b78, 0x11b8c, 0x11b98, 0x11bb0, 0x11bbe, 0x11bce, - 0x11bdc, 0x11be2, 0x11be4, 0x11be8, 0x11bf6, 0x11c16, 0x11c26, - 0x11c2c, 0x11c46, 0x11c4c, 0x11c58, 0x11c6e, 0x11c86, 0x11c98, - 0x11cb0, 0x11cbe, 0x11cce, 0x11cdc, 0x11ce2, 0x11ce4, 0x11ce8, - 0x11cf6, 0x11d06, 0x11d0c, 0x11d18, 0x11d30, 0x11d3e, 0x11d60, - 0x11d7c, 0x11d8e, 0x11d9c, 0x11db8, 0x11dc4, 0x11dc8, 0x11dd0, - 0x11dde, 0x11de6, 0x11dec, 0x11dfa, 0x11e0a, 0x11e12, 0x11e14, - 0x11e22, 0x11e24, 0x11e28, 0x11e36, 0x11e42, 0x11e44, 0x11e50, - 0x11e5e, 0x11e66, 0x11e6c, 0x11e82, 0x11e84, 0x11e88, 0x11e90, - 0x11e9e, 0x11ea0, 0x11ebc, 0x11ec6, 0x11ecc, 0x11ed8, 0x11eee, - 0x11f1a, 0x11f2e, 0x11f32, 0x11f34, 0x11f4e, 0x11f5c, 0x11f62, - 0x11f64, 0x11f68, 0x11f76, 0x12048, 0x1205e, 0x12082, 0x12084, - 0x12090, 0x1209e, 0x120a0, 0x120bc, 0x120d8, 0x120f2, 0x120f4, - 0x12108, 0x1211e, 0x12120, 0x1213c, 0x12140, 0x12178, 0x12186, - 0x12198, 0x121b0, 0x121be, 0x121e2, 0x121e4, 0x121e8, 0x121f6, - 0x12204, 0x12210, 0x1221e, 0x12220, 0x12278, 0x122f0, 0x12306, - 0x1230c, 0x12330, 0x1233e, 0x12360, 0x1237c, 0x1238e, 0x1239c, - 0x123b8, 0x123c2, 0x123c8, 0x123d0, 0x123e6, 0x123ec, 0x1241e, - 0x12420, 0x1243c, 0x124f0, 0x125e0, 0x12618, 0x1263e, 0x12660, - 0x1267c, 0x126c0, 0x126f8, 0x12738, 0x12770, 0x1277e, 0x12782, - 0x12784, 0x12790, 0x1279e, 0x127a0, 0x127bc, 0x127c6, 0x127cc, - 0x127d8, 0x127ee, 0x12820, 0x1283c, 0x12840, 0x12878, 0x128f0, - 0x129e0, 0x12bc0, 0x12c18, 0x12c30, 0x12c3e, 0x12c60, 0x12c7c, - 0x12cc0, 0x12cf8, 0x12df0, 0x12e1c, 0x12e38, 0x12e70, 0x12e7e, - 0x12ee0, 0x12efc, 0x12f04, 0x12f08, 0x12f10, 0x12f20, 0x12f3c, - 0x12f40, 0x12f78, 0x12f86, 0x12f8c, 0x12f98, 0x12fb0, 0x12fbe, - 0x12fce, 0x12fdc, 0x1302e, 0x1304e, 0x1305c, 0x13062, 0x13068, - 0x1308e, 0x1309c, 0x130b8, 0x130c2, 0x130c8, 0x130d0, 0x130de, - 0x130ec, 0x130fa, 0x1310e, 0x13138, 0x13170, 0x1317e, 0x13182, - 0x13184, 0x13190, 0x1319e, 0x131a0, 0x131bc, 0x131c6, 0x131cc, - 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0x1f518, 0x1f530, 0x1f53e, 0x1f560, 0x1f57c, 0x1f58e, 0x1f59c, - 0x1f5b8, 0x1f5c2, 0x1f5c4, 0x1f5c8, 0x1f5d0, 0x1f5de, 0x1f5e6, - 0x1f5ec, 0x1f5fa, 0x1f60a, 0x1f612, 0x1f614, 0x1f622, 0x1f624, - 0x1f628, 0x1f636, 0x1f642, 0x1f644, 0x1f648, 0x1f650, 0x1f65e, - 0x1f666, 0x1f67a, 0x1f682, 0x1f684, 0x1f688, 0x1f690, 0x1f69e, - 0x1f6a0, 0x1f6bc, 0x1f6cc, 0x1f6f2, 0x1f6f4, 0x1f71a, 0x1f72e, - 0x1f732, 0x1f734, 0x1f74e, 0x1f75c, 0x1f762, 0x1f764, 0x1f768, - 0x1f776, 0x1f796, 0x1f7a6, 0x1f7ac, 0x1f7ba, 0x1f7d2, 0x1f7d4, - 0x1f89a, 0x1f8ae, 0x1f8b2, 0x1f8b4, 0x1f8d6, 0x1f8ea, 0x1f91a, - 0x1f92e, 0x1f932, 0x1f934, 0x1f94e, 0x1f95c, 0x1f962, 0x1f964, - 0x1f968, 0x1f976, 0x1f996, 0x1f9a6, 0x1f9ac, 0x1f9ba, 0x1f9ca, - 0x1f9d2, 0x1f9d4, 0x1fa1a, 0x1fa2e, 0x1fa32, 0x1fa34, 0x1fa4e, - 0x1fa5c, 0x1fa62, 0x1fa64, 0x1fa68, 0x1fa76, 0x1fa8e, 0x1fa9c, - 0x1fab8, 0x1fac2, 0x1fac4, 0x1fac8, 0x1fad0, 0x1fade, 0x1fae6, - 0x1faec, 0x1fb16, 0x1fb26, 0x1fb2c, 0x1fb3a, 0x1fb46, 0x1fb4c, - 0x1fb58, 0x1fb6e, 0x1fb72, 0x1fb74, 0x1fb8a, 0x1fb92, 0x1fb94, - 0x1fba2, 0x1fba4, 0x1fba8, 0x1fbb6, 0x1fbda }; + /** + * The sorted table of all possible symbols. Extracted from the PDF417 + * specification. The index of a symbol in this table corresponds to the + * index into the codeword table. + */ + private static final int[] SYMBOL_TABLE = {0x1025e, 0x1027a, 0x1029e, + 0x102bc, 0x102f2, 0x102f4, 0x1032e, 0x1034e, 0x1035c, 0x10396, + 0x103a6, 0x103ac, 0x10422, 0x10428, 0x10436, 0x10442, 0x10444, + 0x10448, 0x10450, 0x1045e, 0x10466, 0x1046c, 0x1047a, 0x10482, + 0x1049e, 0x104a0, 0x104bc, 0x104c6, 0x104d8, 0x104ee, 0x104f2, + 0x104f4, 0x10504, 0x10508, 0x10510, 0x1051e, 0x10520, 0x1053c, + 0x10540, 0x10578, 0x10586, 0x1058c, 0x10598, 0x105b0, 0x105be, + 0x105ce, 0x105dc, 0x105e2, 0x105e4, 0x105e8, 0x105f6, 0x1062e, + 0x1064e, 0x1065c, 0x1068e, 0x1069c, 0x106b8, 0x106de, 0x106fa, + 0x10716, 0x10726, 0x1072c, 0x10746, 0x1074c, 0x10758, 0x1076e, + 0x10792, 0x10794, 0x107a2, 0x107a4, 0x107a8, 0x107b6, 0x10822, + 0x10828, 0x10842, 0x10848, 0x10850, 0x1085e, 0x10866, 0x1086c, + 0x1087a, 0x10882, 0x10884, 0x10890, 0x1089e, 0x108a0, 0x108bc, + 0x108c6, 0x108cc, 0x108d8, 0x108ee, 0x108f2, 0x108f4, 0x10902, + 0x10908, 0x1091e, 0x10920, 0x1093c, 0x10940, 0x10978, 0x10986, + 0x10998, 0x109b0, 0x109be, 0x109ce, 0x109dc, 0x109e2, 0x109e4, + 0x109e8, 0x109f6, 0x10a08, 0x10a10, 0x10a1e, 0x10a20, 0x10a3c, + 0x10a40, 0x10a78, 0x10af0, 0x10b06, 0x10b0c, 0x10b18, 0x10b30, + 0x10b3e, 0x10b60, 0x10b7c, 0x10b8e, 0x10b9c, 0x10bb8, 0x10bc2, + 0x10bc4, 0x10bc8, 0x10bd0, 0x10bde, 0x10be6, 0x10bec, 0x10c2e, + 0x10c4e, 0x10c5c, 0x10c62, 0x10c64, 0x10c68, 0x10c76, 0x10c8e, + 0x10c9c, 0x10cb8, 0x10cc2, 0x10cc4, 0x10cc8, 0x10cd0, 0x10cde, + 0x10ce6, 0x10cec, 0x10cfa, 0x10d0e, 0x10d1c, 0x10d38, 0x10d70, + 0x10d7e, 0x10d82, 0x10d84, 0x10d88, 0x10d90, 0x10d9e, 0x10da0, + 0x10dbc, 0x10dc6, 0x10dcc, 0x10dd8, 0x10dee, 0x10df2, 0x10df4, + 0x10e16, 0x10e26, 0x10e2c, 0x10e46, 0x10e58, 0x10e6e, 0x10e86, + 0x10e8c, 0x10e98, 0x10eb0, 0x10ebe, 0x10ece, 0x10edc, 0x10f0a, + 0x10f12, 0x10f14, 0x10f22, 0x10f28, 0x10f36, 0x10f42, 0x10f44, + 0x10f48, 0x10f50, 0x10f5e, 0x10f66, 0x10f6c, 0x10fb2, 0x10fb4, + 0x11022, 0x11028, 0x11042, 0x11048, 0x11050, 0x1105e, 0x1107a, + 0x11082, 0x11084, 0x11090, 0x1109e, 0x110a0, 0x110bc, 0x110c6, + 0x110cc, 0x110d8, 0x110ee, 0x110f2, 0x110f4, 0x11102, 0x1111e, + 0x11120, 0x1113c, 0x11140, 0x11178, 0x11186, 0x11198, 0x111b0, + 0x111be, 0x111ce, 0x111dc, 0x111e2, 0x111e4, 0x111e8, 0x111f6, + 0x11208, 0x1121e, 0x11220, 0x11278, 0x112f0, 0x1130c, 0x11330, + 0x1133e, 0x11360, 0x1137c, 0x1138e, 0x1139c, 0x113b8, 0x113c2, + 0x113c8, 0x113d0, 0x113de, 0x113e6, 0x113ec, 0x11408, 0x11410, + 0x1141e, 0x11420, 0x1143c, 0x11440, 0x11478, 0x114f0, 0x115e0, + 0x1160c, 0x11618, 0x11630, 0x1163e, 0x11660, 0x1167c, 0x116c0, + 0x116f8, 0x1171c, 0x11738, 0x11770, 0x1177e, 0x11782, 0x11784, + 0x11788, 0x11790, 0x1179e, 0x117a0, 0x117bc, 0x117c6, 0x117cc, + 0x117d8, 0x117ee, 0x1182e, 0x11834, 0x1184e, 0x1185c, 0x11862, + 0x11864, 0x11868, 0x11876, 0x1188e, 0x1189c, 0x118b8, 0x118c2, + 0x118c8, 0x118d0, 0x118de, 0x118e6, 0x118ec, 0x118fa, 0x1190e, + 0x1191c, 0x11938, 0x11970, 0x1197e, 0x11982, 0x11984, 0x11990, + 0x1199e, 0x119a0, 0x119bc, 0x119c6, 0x119cc, 0x119d8, 0x119ee, + 0x119f2, 0x119f4, 0x11a0e, 0x11a1c, 0x11a38, 0x11a70, 0x11a7e, + 0x11ae0, 0x11afc, 0x11b08, 0x11b10, 0x11b1e, 0x11b20, 0x11b3c, + 0x11b40, 0x11b78, 0x11b8c, 0x11b98, 0x11bb0, 0x11bbe, 0x11bce, + 0x11bdc, 0x11be2, 0x11be4, 0x11be8, 0x11bf6, 0x11c16, 0x11c26, + 0x11c2c, 0x11c46, 0x11c4c, 0x11c58, 0x11c6e, 0x11c86, 0x11c98, + 0x11cb0, 0x11cbe, 0x11cce, 0x11cdc, 0x11ce2, 0x11ce4, 0x11ce8, + 0x11cf6, 0x11d06, 0x11d0c, 0x11d18, 0x11d30, 0x11d3e, 0x11d60, + 0x11d7c, 0x11d8e, 0x11d9c, 0x11db8, 0x11dc4, 0x11dc8, 0x11dd0, + 0x11dde, 0x11de6, 0x11dec, 0x11dfa, 0x11e0a, 0x11e12, 0x11e14, + 0x11e22, 0x11e24, 0x11e28, 0x11e36, 0x11e42, 0x11e44, 0x11e50, + 0x11e5e, 0x11e66, 0x11e6c, 0x11e82, 0x11e84, 0x11e88, 0x11e90, + 0x11e9e, 0x11ea0, 0x11ebc, 0x11ec6, 0x11ecc, 0x11ed8, 0x11eee, + 0x11f1a, 0x11f2e, 0x11f32, 0x11f34, 0x11f4e, 0x11f5c, 0x11f62, + 0x11f64, 0x11f68, 0x11f76, 0x12048, 0x1205e, 0x12082, 0x12084, + 0x12090, 0x1209e, 0x120a0, 0x120bc, 0x120d8, 0x120f2, 0x120f4, + 0x12108, 0x1211e, 0x12120, 0x1213c, 0x12140, 0x12178, 0x12186, + 0x12198, 0x121b0, 0x121be, 0x121e2, 0x121e4, 0x121e8, 0x121f6, + 0x12204, 0x12210, 0x1221e, 0x12220, 0x12278, 0x122f0, 0x12306, + 0x1230c, 0x12330, 0x1233e, 0x12360, 0x1237c, 0x1238e, 0x1239c, + 0x123b8, 0x123c2, 0x123c8, 0x123d0, 0x123e6, 0x123ec, 0x1241e, + 0x12420, 0x1243c, 0x124f0, 0x125e0, 0x12618, 0x1263e, 0x12660, + 0x1267c, 0x126c0, 0x126f8, 0x12738, 0x12770, 0x1277e, 0x12782, + 0x12784, 0x12790, 0x1279e, 0x127a0, 0x127bc, 0x127c6, 0x127cc, + 0x127d8, 0x127ee, 0x12820, 0x1283c, 0x12840, 0x12878, 0x128f0, + 0x129e0, 0x12bc0, 0x12c18, 0x12c30, 0x12c3e, 0x12c60, 0x12c7c, + 0x12cc0, 0x12cf8, 0x12df0, 0x12e1c, 0x12e38, 0x12e70, 0x12e7e, + 0x12ee0, 0x12efc, 0x12f04, 0x12f08, 0x12f10, 0x12f20, 0x12f3c, + 0x12f40, 0x12f78, 0x12f86, 0x12f8c, 0x12f98, 0x12fb0, 0x12fbe, + 0x12fce, 0x12fdc, 0x1302e, 0x1304e, 0x1305c, 0x13062, 0x13068, + 0x1308e, 0x1309c, 0x130b8, 0x130c2, 0x130c8, 0x130d0, 0x130de, + 0x130ec, 0x130fa, 0x1310e, 0x13138, 0x13170, 0x1317e, 0x13182, + 0x13184, 0x13190, 0x1319e, 0x131a0, 0x131bc, 0x131c6, 0x131cc, + 0x131d8, 0x131f2, 0x131f4, 0x1320e, 0x1321c, 0x13270, 0x1327e, + 0x132e0, 0x132fc, 0x13308, 0x1331e, 0x13320, 0x1333c, 0x13340, + 0x13378, 0x13386, 0x13398, 0x133b0, 0x133be, 0x133ce, 0x133dc, + 0x133e2, 0x133e4, 0x133e8, 0x133f6, 0x1340e, 0x1341c, 0x13438, + 0x13470, 0x1347e, 0x134e0, 0x134fc, 0x135c0, 0x135f8, 0x13608, + 0x13610, 0x1361e, 0x13620, 0x1363c, 0x13640, 0x13678, 0x136f0, + 0x1370c, 0x13718, 0x13730, 0x1373e, 0x13760, 0x1377c, 0x1379c, + 0x137b8, 0x137c2, 0x137c4, 0x137c8, 0x137d0, 0x137de, 0x137e6, + 0x137ec, 0x13816, 0x13826, 0x1382c, 0x13846, 0x1384c, 0x13858, + 0x1386e, 0x13874, 0x13886, 0x13898, 0x138b0, 0x138be, 0x138ce, + 0x138dc, 0x138e2, 0x138e4, 0x138e8, 0x13906, 0x1390c, 0x13930, + 0x1393e, 0x13960, 0x1397c, 0x1398e, 0x1399c, 0x139b8, 0x139c8, + 0x139d0, 0x139de, 0x139e6, 0x139ec, 0x139fa, 0x13a06, 0x13a0c, + 0x13a18, 0x13a30, 0x13a3e, 0x13a60, 0x13a7c, 0x13ac0, 0x13af8, + 0x13b0e, 0x13b1c, 0x13b38, 0x13b70, 0x13b7e, 0x13b88, 0x13b90, + 0x13b9e, 0x13ba0, 0x13bbc, 0x13bcc, 0x13bd8, 0x13bee, 0x13bf2, + 0x13bf4, 0x13c12, 0x13c14, 0x13c22, 0x13c24, 0x13c28, 0x13c36, + 0x13c42, 0x13c48, 0x13c50, 0x13c5e, 0x13c66, 0x13c6c, 0x13c82, + 0x13c84, 0x13c90, 0x13c9e, 0x13ca0, 0x13cbc, 0x13cc6, 0x13ccc, + 0x13cd8, 0x13cee, 0x13d02, 0x13d04, 0x13d08, 0x13d10, 0x13d1e, + 0x13d20, 0x13d3c, 0x13d40, 0x13d78, 0x13d86, 0x13d8c, 0x13d98, + 0x13db0, 0x13dbe, 0x13dce, 0x13ddc, 0x13de4, 0x13de8, 0x13df6, + 0x13e1a, 0x13e2e, 0x13e32, 0x13e34, 0x13e4e, 0x13e5c, 0x13e62, + 0x13e64, 0x13e68, 0x13e76, 0x13e8e, 0x13e9c, 0x13eb8, 0x13ec2, + 0x13ec4, 0x13ec8, 0x13ed0, 0x13ede, 0x13ee6, 0x13eec, 0x13f26, + 0x13f2c, 0x13f3a, 0x13f46, 0x13f4c, 0x13f58, 0x13f6e, 0x13f72, + 0x13f74, 0x14082, 0x1409e, 0x140a0, 0x140bc, 0x14104, 0x14108, + 0x14110, 0x1411e, 0x14120, 0x1413c, 0x14140, 0x14178, 0x1418c, + 0x14198, 0x141b0, 0x141be, 0x141e2, 0x141e4, 0x141e8, 0x14208, + 0x14210, 0x1421e, 0x14220, 0x1423c, 0x14240, 0x14278, 0x142f0, + 0x14306, 0x1430c, 0x14318, 0x14330, 0x1433e, 0x14360, 0x1437c, + 0x1438e, 0x143c2, 0x143c4, 0x143c8, 0x143d0, 0x143e6, 0x143ec, + 0x14408, 0x14410, 0x1441e, 0x14420, 0x1443c, 0x14440, 0x14478, + 0x144f0, 0x145e0, 0x1460c, 0x14618, 0x14630, 0x1463e, 0x14660, + 0x1467c, 0x146c0, 0x146f8, 0x1471c, 0x14738, 0x14770, 0x1477e, + 0x14782, 0x14784, 0x14788, 0x14790, 0x147a0, 0x147bc, 0x147c6, + 0x147cc, 0x147d8, 0x147ee, 0x14810, 0x14820, 0x1483c, 0x14840, + 0x14878, 0x148f0, 0x149e0, 0x14bc0, 0x14c30, 0x14c3e, 0x14c60, + 0x14c7c, 0x14cc0, 0x14cf8, 0x14df0, 0x14e38, 0x14e70, 0x14e7e, + 0x14ee0, 0x14efc, 0x14f04, 0x14f08, 0x14f10, 0x14f1e, 0x14f20, + 0x14f3c, 0x14f40, 0x14f78, 0x14f86, 0x14f8c, 0x14f98, 0x14fb0, + 0x14fce, 0x14fdc, 0x15020, 0x15040, 0x15078, 0x150f0, 0x151e0, + 0x153c0, 0x15860, 0x1587c, 0x158c0, 0x158f8, 0x159f0, 0x15be0, + 0x15c70, 0x15c7e, 0x15ce0, 0x15cfc, 0x15dc0, 0x15df8, 0x15e08, + 0x15e10, 0x15e20, 0x15e40, 0x15e78, 0x15ef0, 0x15f0c, 0x15f18, + 0x15f30, 0x15f60, 0x15f7c, 0x15f8e, 0x15f9c, 0x15fb8, 0x1604e, + 0x1605c, 0x1608e, 0x1609c, 0x160b8, 0x160c2, 0x160c4, 0x160c8, + 0x160de, 0x1610e, 0x1611c, 0x16138, 0x16170, 0x1617e, 0x16184, + 0x16188, 0x16190, 0x1619e, 0x161a0, 0x161bc, 0x161c6, 0x161cc, + 0x161d8, 0x161f2, 0x161f4, 0x1620e, 0x1621c, 0x16238, 0x16270, + 0x1627e, 0x162e0, 0x162fc, 0x16304, 0x16308, 0x16310, 0x1631e, + 0x16320, 0x1633c, 0x16340, 0x16378, 0x16386, 0x1638c, 0x16398, + 0x163b0, 0x163be, 0x163ce, 0x163dc, 0x163e2, 0x163e4, 0x163e8, + 0x163f6, 0x1640e, 0x1641c, 0x16438, 0x16470, 0x1647e, 0x164e0, + 0x164fc, 0x165c0, 0x165f8, 0x16610, 0x1661e, 0x16620, 0x1663c, + 0x16640, 0x16678, 0x166f0, 0x16718, 0x16730, 0x1673e, 0x16760, + 0x1677c, 0x1678e, 0x1679c, 0x167b8, 0x167c2, 0x167c4, 0x167c8, + 0x167d0, 0x167de, 0x167e6, 0x167ec, 0x1681c, 0x16838, 0x16870, + 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0x1c9d8, + 0x1c9ee, 0x1c9f2, 0x1c9f4, 0x1ca38, 0x1ca70, 0x1ca7e, 0x1cae0, + 0x1cafc, 0x1cb02, 0x1cb04, 0x1cb08, 0x1cb10, 0x1cb20, 0x1cb3c, + 0x1cb40, 0x1cb78, 0x1cb86, 0x1cb8c, 0x1cb98, 0x1cbb0, 0x1cbbe, + 0x1cbce, 0x1cbdc, 0x1cbe2, 0x1cbe4, 0x1cbe8, 0x1cbf6, 0x1cc16, + 0x1cc26, 0x1cc2c, 0x1cc3a, 0x1cc46, 0x1cc58, 0x1cc72, 0x1cc74, + 0x1cc86, 0x1ccb0, 0x1ccbe, 0x1ccce, 0x1cce2, 0x1cce4, 0x1cce8, + 0x1cd06, 0x1cd0c, 0x1cd18, 0x1cd30, 0x1cd3e, 0x1cd60, 0x1cd7c, + 0x1cd9c, 0x1cdc2, 0x1cdc4, 0x1cdc8, 0x1cdd0, 0x1cdde, 0x1cde6, + 0x1cdfa, 0x1ce22, 0x1ce28, 0x1ce42, 0x1ce50, 0x1ce5e, 0x1ce66, + 0x1ce7a, 0x1ce82, 0x1ce84, 0x1ce88, 0x1ce90, 0x1ce9e, 0x1cea0, + 0x1cebc, 0x1cecc, 0x1cef2, 0x1cef4, 0x1cf2e, 0x1cf32, 0x1cf34, + 0x1cf4e, 0x1cf5c, 0x1cf62, 0x1cf64, 0x1cf68, 0x1cf96, 0x1cfa6, + 0x1cfac, 0x1cfca, 0x1cfd2, 0x1cfd4, 0x1d02e, 0x1d032, 0x1d034, + 0x1d04e, 0x1d05c, 0x1d062, 0x1d064, 0x1d068, 0x1d076, 0x1d08e, + 0x1d09c, 0x1d0b8, 0x1d0c2, 0x1d0c4, 0x1d0c8, 0x1d0d0, 0x1d0de, + 0x1d0e6, 0x1d0ec, 0x1d0fa, 0x1d11c, 0x1d138, 0x1d170, 0x1d17e, + 0x1d182, 0x1d184, 0x1d188, 0x1d190, 0x1d19e, 0x1d1a0, 0x1d1bc, + 0x1d1c6, 0x1d1cc, 0x1d1d8, 0x1d1ee, 0x1d1f2, 0x1d1f4, 0x1d21c, + 0x1d238, 0x1d270, 0x1d27e, 0x1d2e0, 0x1d2fc, 0x1d302, 0x1d304, + 0x1d308, 0x1d310, 0x1d31e, 0x1d320, 0x1d33c, 0x1d340, 0x1d378, + 0x1d386, 0x1d38c, 0x1d398, 0x1d3b0, 0x1d3be, 0x1d3ce, 0x1d3dc, + 0x1d3e2, 0x1d3e4, 0x1d3e8, 0x1d3f6, 0x1d470, 0x1d47e, 0x1d4e0, + 0x1d4fc, 0x1d5c0, 0x1d5f8, 0x1d604, 0x1d608, 0x1d610, 0x1d620, + 0x1d640, 0x1d678, 0x1d6f0, 0x1d706, 0x1d70c, 0x1d718, 0x1d730, + 0x1d73e, 0x1d760, 0x1d77c, 0x1d78e, 0x1d79c, 0x1d7b8, 0x1d7c2, + 0x1d7c4, 0x1d7c8, 0x1d7d0, 0x1d7de, 0x1d7e6, 0x1d7ec, 0x1d826, + 0x1d82c, 0x1d83a, 0x1d846, 0x1d84c, 0x1d858, 0x1d872, 0x1d874, + 0x1d886, 0x1d88c, 0x1d898, 0x1d8b0, 0x1d8be, 0x1d8ce, 0x1d8e2, + 0x1d8e4, 0x1d8e8, 0x1d8f6, 0x1d90c, 0x1d918, 0x1d930, 0x1d93e, + 0x1d960, 0x1d97c, 0x1d99c, 0x1d9c2, 0x1d9c4, 0x1d9c8, 0x1d9d0, + 0x1d9e6, 0x1d9fa, 0x1da0c, 0x1da18, 0x1da30, 0x1da3e, 0x1da60, + 0x1da7c, 0x1dac0, 0x1daf8, 0x1db38, 0x1db82, 0x1db84, 0x1db88, + 0x1db90, 0x1db9e, 0x1dba0, 0x1dbcc, 0x1dbf2, 0x1dbf4, 0x1dc22, + 0x1dc42, 0x1dc44, 0x1dc48, 0x1dc50, 0x1dc5e, 0x1dc66, 0x1dc7a, + 0x1dc82, 0x1dc84, 0x1dc88, 0x1dc90, 0x1dc9e, 0x1dca0, 0x1dcbc, + 0x1dccc, 0x1dcf2, 0x1dcf4, 0x1dd04, 0x1dd08, 0x1dd10, 0x1dd1e, + 0x1dd20, 0x1dd3c, 0x1dd40, 0x1dd78, 0x1dd86, 0x1dd98, 0x1ddce, + 0x1dde2, 0x1dde4, 0x1dde8, 0x1de2e, 0x1de32, 0x1de34, 0x1de4e, + 0x1de5c, 0x1de62, 0x1de64, 0x1de68, 0x1de8e, 0x1de9c, 0x1deb8, + 0x1dec2, 0x1dec4, 0x1dec8, 0x1ded0, 0x1dee6, 0x1defa, 0x1df16, + 0x1df26, 0x1df2c, 0x1df46, 0x1df4c, 0x1df58, 0x1df72, 0x1df74, + 0x1df8a, 0x1df92, 0x1df94, 0x1dfa2, 0x1dfa4, 0x1dfa8, 0x1e08a, + 0x1e092, 0x1e094, 0x1e0a2, 0x1e0a4, 0x1e0a8, 0x1e0b6, 0x1e0da, + 0x1e10a, 0x1e112, 0x1e114, 0x1e122, 0x1e124, 0x1e128, 0x1e136, + 0x1e142, 0x1e144, 0x1e148, 0x1e150, 0x1e166, 0x1e16c, 0x1e17a, + 0x1e19a, 0x1e1b2, 0x1e1b4, 0x1e20a, 0x1e212, 0x1e214, 0x1e222, + 0x1e224, 0x1e228, 0x1e236, 0x1e242, 0x1e248, 0x1e250, 0x1e25e, + 0x1e266, 0x1e26c, 0x1e27a, 0x1e282, 0x1e284, 0x1e288, 0x1e290, + 0x1e2a0, 0x1e2bc, 0x1e2c6, 0x1e2cc, 0x1e2d8, 0x1e2ee, 0x1e2f2, + 0x1e2f4, 0x1e31a, 0x1e332, 0x1e334, 0x1e35c, 0x1e362, 0x1e364, + 0x1e368, 0x1e3ba, 0x1e40a, 0x1e412, 0x1e414, 0x1e422, 0x1e428, + 0x1e436, 0x1e442, 0x1e448, 0x1e450, 0x1e45e, 0x1e466, 0x1e46c, + 0x1e47a, 0x1e482, 0x1e484, 0x1e490, 0x1e49e, 0x1e4a0, 0x1e4bc, + 0x1e4c6, 0x1e4cc, 0x1e4d8, 0x1e4ee, 0x1e4f2, 0x1e4f4, 0x1e502, + 0x1e504, 0x1e508, 0x1e510, 0x1e51e, 0x1e520, 0x1e53c, 0x1e540, + 0x1e578, 0x1e586, 0x1e58c, 0x1e598, 0x1e5b0, 0x1e5be, 0x1e5ce, + 0x1e5dc, 0x1e5e2, 0x1e5e4, 0x1e5e8, 0x1e5f6, 0x1e61a, 0x1e62e, + 0x1e632, 0x1e634, 0x1e64e, 0x1e65c, 0x1e662, 0x1e668, 0x1e68e, + 0x1e69c, 0x1e6b8, 0x1e6c2, 0x1e6c4, 0x1e6c8, 0x1e6d0, 0x1e6e6, + 0x1e6fa, 0x1e716, 0x1e726, 0x1e72c, 0x1e73a, 0x1e746, 0x1e74c, + 0x1e758, 0x1e772, 0x1e774, 0x1e792, 0x1e794, 0x1e7a2, 0x1e7a4, + 0x1e7a8, 0x1e7b6, 0x1e812, 0x1e814, 0x1e822, 0x1e824, 0x1e828, + 0x1e836, 0x1e842, 0x1e844, 0x1e848, 0x1e850, 0x1e85e, 0x1e866, + 0x1e86c, 0x1e87a, 0x1e882, 0x1e884, 0x1e888, 0x1e890, 0x1e89e, + 0x1e8a0, 0x1e8bc, 0x1e8c6, 0x1e8cc, 0x1e8d8, 0x1e8ee, 0x1e8f2, + 0x1e8f4, 0x1e902, 0x1e904, 0x1e908, 0x1e910, 0x1e920, 0x1e93c, + 0x1e940, 0x1e978, 0x1e986, 0x1e98c, 0x1e998, 0x1e9b0, 0x1e9be, + 0x1e9ce, 0x1e9dc, 0x1e9e2, 0x1e9e4, 0x1e9e8, 0x1e9f6, 0x1ea04, + 0x1ea08, 0x1ea10, 0x1ea20, 0x1ea40, 0x1ea78, 0x1eaf0, 0x1eb06, + 0x1eb0c, 0x1eb18, 0x1eb30, 0x1eb3e, 0x1eb60, 0x1eb7c, 0x1eb8e, + 0x1eb9c, 0x1ebb8, 0x1ebc2, 0x1ebc4, 0x1ebc8, 0x1ebd0, 0x1ebde, + 0x1ebe6, 0x1ebec, 0x1ec1a, 0x1ec2e, 0x1ec32, 0x1ec34, 0x1ec4e, + 0x1ec5c, 0x1ec62, 0x1ec64, 0x1ec68, 0x1ec8e, 0x1ec9c, 0x1ecb8, + 0x1ecc2, 0x1ecc4, 0x1ecc8, 0x1ecd0, 0x1ece6, 0x1ecfa, 0x1ed0e, + 0x1ed1c, 0x1ed38, 0x1ed70, 0x1ed7e, 0x1ed82, 0x1ed84, 0x1ed88, + 0x1ed90, 0x1ed9e, 0x1eda0, 0x1edcc, 0x1edf2, 0x1edf4, 0x1ee16, + 0x1ee26, 0x1ee2c, 0x1ee3a, 0x1ee46, 0x1ee4c, 0x1ee58, 0x1ee6e, + 0x1ee72, 0x1ee74, 0x1ee86, 0x1ee8c, 0x1ee98, 0x1eeb0, 0x1eebe, + 0x1eece, 0x1eedc, 0x1eee2, 0x1eee4, 0x1eee8, 0x1ef12, 0x1ef22, + 0x1ef24, 0x1ef28, 0x1ef36, 0x1ef42, 0x1ef44, 0x1ef48, 0x1ef50, + 0x1ef5e, 0x1ef66, 0x1ef6c, 0x1ef7a, 0x1efae, 0x1efb2, 0x1efb4, + 0x1efd6, 0x1f096, 0x1f0a6, 0x1f0ac, 0x1f0ba, 0x1f0ca, 0x1f0d2, + 0x1f0d4, 0x1f116, 0x1f126, 0x1f12c, 0x1f13a, 0x1f146, 0x1f14c, + 0x1f158, 0x1f16e, 0x1f172, 0x1f174, 0x1f18a, 0x1f192, 0x1f194, + 0x1f1a2, 0x1f1a4, 0x1f1a8, 0x1f1da, 0x1f216, 0x1f226, 0x1f22c, + 0x1f23a, 0x1f246, 0x1f258, 0x1f26e, 0x1f272, 0x1f274, 0x1f286, + 0x1f28c, 0x1f298, 0x1f2b0, 0x1f2be, 0x1f2ce, 0x1f2dc, 0x1f2e2, + 0x1f2e4, 0x1f2e8, 0x1f2f6, 0x1f30a, 0x1f312, 0x1f314, 0x1f322, + 0x1f328, 0x1f342, 0x1f344, 0x1f348, 0x1f350, 0x1f35e, 0x1f366, + 0x1f37a, 0x1f39a, 0x1f3ae, 0x1f3b2, 0x1f3b4, 0x1f416, 0x1f426, + 0x1f42c, 0x1f43a, 0x1f446, 0x1f44c, 0x1f458, 0x1f46e, 0x1f472, + 0x1f474, 0x1f486, 0x1f48c, 0x1f498, 0x1f4b0, 0x1f4be, 0x1f4ce, + 0x1f4dc, 0x1f4e2, 0x1f4e4, 0x1f4e8, 0x1f4f6, 0x1f506, 0x1f50c, + 0x1f518, 0x1f530, 0x1f53e, 0x1f560, 0x1f57c, 0x1f58e, 0x1f59c, + 0x1f5b8, 0x1f5c2, 0x1f5c4, 0x1f5c8, 0x1f5d0, 0x1f5de, 0x1f5e6, + 0x1f5ec, 0x1f5fa, 0x1f60a, 0x1f612, 0x1f614, 0x1f622, 0x1f624, + 0x1f628, 0x1f636, 0x1f642, 0x1f644, 0x1f648, 0x1f650, 0x1f65e, + 0x1f666, 0x1f67a, 0x1f682, 0x1f684, 0x1f688, 0x1f690, 0x1f69e, + 0x1f6a0, 0x1f6bc, 0x1f6cc, 0x1f6f2, 0x1f6f4, 0x1f71a, 0x1f72e, + 0x1f732, 0x1f734, 0x1f74e, 0x1f75c, 0x1f762, 0x1f764, 0x1f768, + 0x1f776, 0x1f796, 0x1f7a6, 0x1f7ac, 0x1f7ba, 0x1f7d2, 0x1f7d4, + 0x1f89a, 0x1f8ae, 0x1f8b2, 0x1f8b4, 0x1f8d6, 0x1f8ea, 0x1f91a, + 0x1f92e, 0x1f932, 0x1f934, 0x1f94e, 0x1f95c, 0x1f962, 0x1f964, + 0x1f968, 0x1f976, 0x1f996, 0x1f9a6, 0x1f9ac, 0x1f9ba, 0x1f9ca, + 0x1f9d2, 0x1f9d4, 0x1fa1a, 0x1fa2e, 0x1fa32, 0x1fa34, 0x1fa4e, + 0x1fa5c, 0x1fa62, 0x1fa64, 0x1fa68, 0x1fa76, 0x1fa8e, 0x1fa9c, + 0x1fab8, 0x1fac2, 0x1fac4, 0x1fac8, 0x1fad0, 0x1fade, 0x1fae6, + 0x1faec, 0x1fb16, 0x1fb26, 0x1fb2c, 0x1fb3a, 0x1fb46, 0x1fb4c, + 0x1fb58, 0x1fb6e, 0x1fb72, 0x1fb74, 0x1fb8a, 0x1fb92, 0x1fb94, + 0x1fba2, 0x1fba4, 0x1fba8, 0x1fbb6, 0x1fbda}; - /** - * This table contains to codewords for all symbols. - */ - private static final int codewordTable[] = { 2627, 1819, 2622, 2621, 1813, - 1812, 2729, 2724, 2723, 2779, 2774, 2773, 902, 896, 908, 868, 865, - 861, 859, 2511, 873, 871, 1780, 835, 2493, 825, 2491, 842, 837, 844, - 1764, 1762, 811, 810, 809, 2483, 807, 2482, 806, 2480, 815, 814, 813, - 812, 2484, 817, 816, 1745, 1744, 1742, 1746, 2655, 2637, 2635, 2626, - 2625, 2623, 2628, 1820, 2752, 2739, 2737, 2728, 2727, 2725, 2730, - 2785, 2783, 2778, 2777, 2775, 2780, 787, 781, 747, 739, 736, 2413, - 754, 752, 1719, 692, 689, 681, 2371, 678, 2369, 700, 697, 694, 703, - 1688, 1686, 642, 638, 2343, 631, 2341, 627, 2338, 651, 646, 643, 2345, - 654, 652, 1652, 1650, 1647, 1654, 601, 599, 2322, 596, 2321, 594, - 2319, 2317, 611, 610, 608, 606, 2324, 603, 2323, 615, 614, 612, 1617, - 1616, 1614, 1612, 616, 1619, 1618, 2575, 2538, 2536, 905, 901, 898, - 909, 2509, 2507, 2504, 870, 867, 864, 860, 2512, 875, 872, 1781, 2490, - 2489, 2487, 2485, 1748, 836, 834, 832, 830, 2494, 827, 2492, 843, 841, - 839, 845, 1765, 1763, 2701, 2676, 2674, 2653, 2648, 2656, 2634, 2633, - 2631, 2629, 1821, 2638, 2636, 2770, 2763, 2761, 2750, 2745, 2753, - 2736, 2735, 2733, 2731, 1848, 2740, 2738, 2786, 2784, 591, 588, 576, - 569, 566, 2296, 1590, 537, 534, 526, 2276, 522, 2274, 545, 542, 539, - 548, 1572, 1570, 481, 2245, 466, 2242, 462, 2239, 492, 485, 482, 2249, - 496, 494, 1534, 1531, 1528, 1538, 413, 2196, 406, 2191, 2188, 425, - 419, 2202, 415, 2199, 432, 430, 427, 1472, 1467, 1464, 433, 1476, - 1474, 368, 367, 2160, 365, 2159, 362, 2157, 2155, 2152, 378, 377, 375, - 2166, 372, 2165, 369, 2162, 383, 381, 379, 2168, 1419, 1418, 1416, - 1414, 385, 1411, 384, 1423, 1422, 1420, 1424, 2461, 802, 2441, 2439, - 790, 786, 783, 794, 2409, 2406, 2403, 750, 742, 738, 2414, 756, 753, - 1720, 2367, 2365, 2362, 2359, 1663, 693, 691, 684, 2373, 680, 2370, - 702, 699, 696, 704, 1690, 1687, 2337, 2336, 2334, 2332, 1624, 2329, - 1622, 640, 637, 2344, 634, 2342, 630, 2340, 650, 648, 645, 2346, 655, - 653, 1653, 1651, 1649, 1655, 2612, 2597, 2595, 2571, 2568, 2565, 2576, - 2534, 2529, 2526, 1787, 2540, 2537, 907, 904, 900, 910, 2503, 2502, - 2500, 2498, 1768, 2495, 1767, 2510, 2508, 2506, 869, 866, 863, 2513, - 876, 874, 1782, 2720, 2713, 2711, 2697, 2694, 2691, 2702, 2672, 2670, - 2664, 1828, 2678, 2675, 2647, 2646, 2644, 2642, 1823, 2639, 1822, - 2654, 2652, 2650, 2657, 2771, 1855, 2765, 2762, 1850, 1849, 2751, - 2749, 2747, 2754, 353, 2148, 344, 342, 336, 2142, 332, 2140, 345, - 1375, 1373, 306, 2130, 299, 2128, 295, 2125, 319, 314, 311, 2132, - 1354, 1352, 1349, 1356, 262, 257, 2101, 253, 2096, 2093, 274, 273, - 267, 2107, 263, 2104, 280, 278, 275, 1316, 1311, 1308, 1320, 1318, - 2052, 202, 2050, 2044, 2040, 219, 2063, 212, 2060, 208, 2055, 224, - 221, 2066, 1260, 1258, 1252, 231, 1248, 229, 1266, 1264, 1261, 1268, - 155, 1998, 153, 1996, 1994, 1991, 1988, 165, 164, 2007, 162, 2006, - 159, 2003, 2000, 172, 171, 169, 2012, 166, 2010, 1186, 1184, 1182, - 1179, 175, 1176, 173, 1192, 1191, 1189, 1187, 176, 1194, 1193, 2313, - 2307, 2305, 592, 589, 2294, 2292, 2289, 578, 572, 568, 2297, 580, - 1591, 2272, 2267, 2264, 1547, 538, 536, 529, 2278, 525, 2275, 547, - 544, 541, 1574, 1571, 2237, 2235, 2229, 1493, 2225, 1489, 478, 2247, - 470, 2244, 465, 2241, 493, 488, 484, 2250, 498, 495, 1536, 1533, 1530, - 1539, 2187, 2186, 2184, 2182, 1432, 2179, 1430, 2176, 1427, 414, 412, - 2197, 409, 2195, 405, 2193, 2190, 426, 424, 421, 2203, 418, 2201, 431, - 429, 1473, 1471, 1469, 1466, 434, 1477, 1475, 2478, 2472, 2470, 2459, - 2457, 2454, 2462, 803, 2437, 2432, 2429, 1726, 2443, 2440, 792, 789, - 785, 2401, 2399, 2393, 1702, 2389, 1699, 2411, 2408, 2405, 745, 741, - 2415, 758, 755, 1721, 2358, 2357, 2355, 2353, 1661, 2350, 1660, 2347, - 1657, 2368, 2366, 2364, 2361, 1666, 690, 687, 2374, 683, 2372, 701, - 698, 705, 1691, 1689, 2619, 2617, 2610, 2608, 2605, 2613, 2593, 2588, - 2585, 1803, 2599, 2596, 2563, 2561, 2555, 1797, 2551, 1795, 2573, - 2570, 2567, 2577, 2525, 2524, 2522, 2520, 1786, 2517, 1785, 2514, - 1783, 2535, 2533, 2531, 2528, 1788, 2541, 2539, 906, 903, 911, 2721, - 1844, 2715, 2712, 1838, 1836, 2699, 2696, 2693, 2703, 1827, 1826, - 1824, 2673, 2671, 2669, 2666, 1829, 2679, 2677, 1858, 1857, 2772, - 1854, 1853, 1851, 1856, 2766, 2764, 143, 1987, 139, 1986, 135, 133, - 131, 1984, 128, 1983, 125, 1981, 138, 137, 136, 1985, 1133, 1132, - 1130, 112, 110, 1974, 107, 1973, 104, 1971, 1969, 122, 121, 119, 117, - 1977, 114, 1976, 124, 1115, 1114, 1112, 1110, 1117, 1116, 84, 83, - 1953, 81, 1952, 78, 1950, 1948, 1945, 94, 93, 91, 1959, 88, 1958, 85, - 1955, 99, 97, 95, 1961, 1086, 1085, 1083, 1081, 1078, 100, 1090, 1089, - 1087, 1091, 49, 47, 1917, 44, 1915, 1913, 1910, 1907, 59, 1926, 56, - 1925, 53, 1922, 1919, 66, 64, 1931, 61, 1929, 1042, 1040, 1038, 71, - 1035, 70, 1032, 68, 1048, 1047, 1045, 1043, 1050, 1049, 12, 10, 1869, - 1867, 1864, 1861, 21, 1880, 19, 1877, 1874, 1871, 28, 1888, 25, 1886, - 22, 1883, 982, 980, 977, 974, 32, 30, 991, 989, 987, 984, 34, 995, - 994, 992, 2151, 2150, 2147, 2146, 2144, 356, 355, 354, 2149, 2139, - 2138, 2136, 2134, 1359, 343, 341, 338, 2143, 335, 2141, 348, 347, 346, - 1376, 1374, 2124, 2123, 2121, 2119, 1326, 2116, 1324, 310, 308, 305, - 2131, 302, 2129, 298, 2127, 320, 318, 316, 313, 2133, 322, 321, 1355, - 1353, 1351, 1357, 2092, 2091, 2089, 2087, 1276, 2084, 1274, 2081, - 1271, 259, 2102, 256, 2100, 252, 2098, 2095, 272, 269, 2108, 266, - 2106, 281, 279, 277, 1317, 1315, 1313, 1310, 282, 1321, 1319, 2039, - 2037, 2035, 2032, 1203, 2029, 1200, 1197, 207, 2053, 205, 2051, 201, - 2049, 2046, 2043, 220, 218, 2064, 215, 2062, 211, 2059, 228, 226, 223, - 2069, 1259, 1257, 1254, 232, 1251, 230, 1267, 1265, 1263, 2316, 2315, - 2312, 2311, 2309, 2314, 2304, 2303, 2301, 2299, 1593, 2308, 2306, 590, - 2288, 2287, 2285, 2283, 1578, 2280, 1577, 2295, 2293, 2291, 579, 577, - 574, 571, 2298, 582, 581, 1592, 2263, 2262, 2260, 2258, 1545, 2255, - 1544, 2252, 1541, 2273, 2271, 2269, 2266, 1550, 535, 532, 2279, 528, - 2277, 546, 543, 549, 1575, 1573, 2224, 2222, 2220, 1486, 2217, 1485, - 2214, 1482, 1479, 2238, 2236, 2234, 2231, 1496, 2228, 1492, 480, 477, - 2248, 473, 2246, 469, 2243, 490, 487, 2251, 497, 1537, 1535, 1532, - 2477, 2476, 2474, 2479, 2469, 2468, 2466, 2464, 1730, 2473, 2471, - 2453, 2452, 2450, 2448, 1729, 2445, 1728, 2460, 2458, 2456, 2463, 805, - 804, 2428, 2427, 2425, 2423, 1725, 2420, 1724, 2417, 1722, 2438, 2436, - 2434, 2431, 1727, 2444, 2442, 793, 791, 788, 795, 2388, 2386, 2384, - 1697, 2381, 1696, 2378, 1694, 1692, 2402, 2400, 2398, 2395, 1703, - 2392, 1701, 2412, 2410, 2407, 751, 748, 744, 2416, 759, 757, 1807, - 2620, 2618, 1806, 1805, 2611, 2609, 2607, 2614, 1802, 1801, 1799, - 2594, 2592, 2590, 2587, 1804, 2600, 2598, 1794, 1793, 1791, 1789, - 2564, 2562, 2560, 2557, 1798, 2554, 1796, 2574, 2572, 2569, 2578, - 1847, 1846, 2722, 1843, 1842, 1840, 1845, 2716, 2714, 1835, 1834, - 1832, 1830, 1839, 1837, 2700, 2698, 2695, 2704, 1817, 1811, 1810, 897, - 862, 1777, 829, 826, 838, 1760, 1758, 808, 2481, 1741, 1740, 1738, - 1743, 2624, 1818, 2726, 2776, 782, 740, 737, 1715, 686, 679, 695, - 1682, 1680, 639, 628, 2339, 647, 644, 1645, 1643, 1640, 1648, 602, - 600, 597, 595, 2320, 593, 2318, 609, 607, 604, 1611, 1610, 1608, 1606, - 613, 1615, 1613, 2328, 926, 924, 892, 886, 899, 857, 850, 2505, 1778, - 824, 823, 821, 819, 2488, 818, 2486, 833, 831, 828, 840, 1761, 1759, - 2649, 2632, 2630, 2746, 2734, 2732, 2782, 2781, 570, 567, 1587, 531, - 527, 523, 540, 1566, 1564, 476, 467, 463, 2240, 486, 483, 1524, 1521, - 1518, 1529, 411, 403, 2192, 399, 2189, 423, 416, 1462, 1457, 1454, - 428, 1468, 1465, 2210, 366, 363, 2158, 360, 2156, 357, 2153, 376, 373, - 370, 2163, 1410, 1409, 1407, 1405, 382, 1402, 380, 1417, 1415, 1412, - 1421, 2175, 2174, 777, 774, 771, 784, 732, 725, 722, 2404, 743, 1716, - 676, 674, 668, 2363, 665, 2360, 685, 1684, 1681, 626, 624, 622, 2335, - 620, 2333, 617, 2330, 641, 635, 649, 1646, 1644, 1642, 2566, 928, 925, - 2530, 2527, 894, 891, 888, 2501, 2499, 2496, 858, 856, 854, 851, 1779, - 2692, 2668, 2665, 2645, 2643, 2640, 2651, 2768, 2759, 2757, 2744, - 2743, 2741, 2748, 352, 1382, 340, 337, 333, 1371, 1369, 307, 300, 296, - 2126, 315, 312, 1347, 1342, 1350, 261, 258, 250, 2097, 246, 2094, 271, - 268, 264, 1306, 1301, 1298, 276, 1312, 1309, 2115, 203, 2048, 195, - 2045, 191, 2041, 213, 209, 2056, 1246, 1244, 1238, 225, 1234, 222, - 1256, 1253, 1249, 1262, 2080, 2079, 154, 1997, 150, 1995, 147, 1992, - 1989, 163, 160, 2004, 156, 2001, 1175, 1174, 1172, 1170, 1167, 170, - 1164, 167, 1185, 1183, 1180, 1177, 174, 1190, 1188, 2025, 2024, 2022, - 587, 586, 564, 559, 556, 2290, 573, 1588, 520, 518, 512, 2268, 508, - 2265, 530, 1568, 1565, 461, 457, 2233, 450, 2230, 446, 2226, 479, 471, - 489, 1526, 1523, 1520, 397, 395, 2185, 392, 2183, 389, 2180, 2177, - 410, 2194, 402, 422, 1463, 1461, 1459, 1456, 1470, 2455, 799, 2433, - 2430, 779, 776, 773, 2397, 2394, 2390, 734, 728, 724, 746, 1717, 2356, - 2354, 2351, 2348, 1658, 677, 675, 673, 670, 667, 688, 1685, 1683, - 2606, 2589, 2586, 2559, 2556, 2552, 927, 2523, 2521, 2518, 2515, 1784, - 2532, 895, 893, 890, 2718, 2709, 2707, 2689, 2687, 2684, 2663, 2662, - 2660, 2658, 1825, 2667, 2769, 1852, 2760, 2758, 142, 141, 1139, 1138, - 134, 132, 129, 126, 1982, 1129, 1128, 1126, 1131, 113, 111, 108, 105, - 1972, 101, 1970, 120, 118, 115, 1109, 1108, 1106, 1104, 123, 1113, - 1111, 82, 79, 1951, 75, 1949, 72, 1946, 92, 89, 86, 1956, 1077, 1076, - 1074, 1072, 98, 1069, 96, 1084, 1082, 1079, 1088, 1968, 1967, 48, 45, - 1916, 42, 1914, 39, 1911, 1908, 60, 57, 54, 1923, 50, 1920, 1031, - 1030, 1028, 1026, 67, 1023, 65, 1020, 62, 1041, 1039, 1036, 1033, 69, - 1046, 1044, 1944, 1943, 1941, 11, 9, 1868, 7, 1865, 1862, 1859, 20, - 1878, 16, 1875, 13, 1872, 970, 968, 966, 963, 29, 960, 26, 23, 983, - 981, 978, 975, 33, 971, 31, 990, 988, 985, 1906, 1904, 1902, 993, 351, - 2145, 1383, 331, 330, 328, 326, 2137, 323, 2135, 339, 1372, 1370, 294, - 293, 291, 289, 2122, 286, 2120, 283, 2117, 309, 303, 317, 1348, 1346, - 1344, 245, 244, 242, 2090, 239, 2088, 236, 2085, 2082, 260, 2099, 249, - 270, 1307, 1305, 1303, 1300, 1314, 189, 2038, 186, 2036, 183, 2033, - 2030, 2026, 206, 198, 2047, 194, 216, 1247, 1245, 1243, 1240, 227, - 1237, 1255, 2310, 2302, 2300, 2286, 2284, 2281, 565, 563, 561, 558, - 575, 1589, 2261, 2259, 2256, 2253, 1542, 521, 519, 517, 514, 2270, - 511, 533, 1569, 1567, 2223, 2221, 2218, 2215, 1483, 2211, 1480, 459, - 456, 453, 2232, 449, 474, 491, 1527, 1525, 1522, 2475, 2467, 2465, - 2451, 2449, 2446, 801, 800, 2426, 2424, 2421, 2418, 1723, 2435, 780, - 778, 775, 2387, 2385, 2382, 2379, 1695, 2375, 1693, 2396, 735, 733, - 730, 727, 749, 1718, 2616, 2615, 2604, 2603, 2601, 2584, 2583, 2581, - 2579, 1800, 2591, 2550, 2549, 2547, 2545, 1792, 2542, 1790, 2558, 929, - 2719, 1841, 2710, 2708, 1833, 1831, 2690, 2688, 2686, 1815, 1809, - 1808, 1774, 1756, 1754, 1737, 1736, 1734, 1739, 1816, 1711, 1676, - 1674, 633, 629, 1638, 1636, 1633, 1641, 598, 1605, 1604, 1602, 1600, - 605, 1609, 1607, 2327, 887, 853, 1775, 822, 820, 1757, 1755, 1584, - 524, 1560, 1558, 468, 464, 1514, 1511, 1508, 1519, 408, 404, 400, - 1452, 1447, 1444, 417, 1458, 1455, 2208, 364, 361, 358, 2154, 1401, - 1400, 1398, 1396, 374, 1393, 371, 1408, 1406, 1403, 1413, 2173, 2172, - 772, 726, 723, 1712, 672, 669, 666, 682, 1678, 1675, 625, 623, 621, - 618, 2331, 636, 632, 1639, 1637, 1635, 920, 918, 884, 880, 889, 849, - 848, 847, 846, 2497, 855, 852, 1776, 2641, 2742, 2787, 1380, 334, - 1367, 1365, 301, 297, 1340, 1338, 1335, 1343, 255, 251, 247, 1296, - 1291, 1288, 265, 1302, 1299, 2113, 204, 196, 192, 2042, 1232, 1230, - 1224, 214, 1220, 210, 1242, 1239, 1235, 1250, 2077, 2075, 151, 148, - 1993, 144, 1990, 1163, 1162, 1160, 1158, 1155, 161, 1152, 157, 1173, - 1171, 1168, 1165, 168, 1181, 1178, 2021, 2020, 2018, 2023, 585, 560, - 557, 1585, 516, 509, 1562, 1559, 458, 447, 2227, 472, 1516, 1513, - 1510, 398, 396, 393, 390, 2181, 386, 2178, 407, 1453, 1451, 1449, - 1446, 420, 1460, 2209, 769, 764, 720, 712, 2391, 729, 1713, 664, 663, - 661, 659, 2352, 656, 2349, 671, 1679, 1677, 2553, 922, 919, 2519, - 2516, 885, 883, 881, 2685, 2661, 2659, 2767, 2756, 2755, 140, 1137, - 1136, 130, 127, 1125, 1124, 1122, 1127, 109, 106, 102, 1103, 1102, - 1100, 1098, 116, 1107, 1105, 1980, 80, 76, 73, 1947, 1068, 1067, 1065, - 1063, 90, 1060, 87, 1075, 1073, 1070, 1080, 1966, 1965, 46, 43, 40, - 1912, 36, 1909, 1019, 1018, 1016, 1014, 58, 1011, 55, 1008, 51, 1029, - 1027, 1024, 1021, 63, 1037, 1034, 1940, 1939, 1937, 1942, 8, 1866, 4, - 1863, 1, 1860, 956, 954, 952, 949, 946, 17, 14, 969, 967, 964, 961, - 27, 957, 24, 979, 976, 972, 1901, 1900, 1898, 1896, 986, 1905, 1903, - 350, 349, 1381, 329, 327, 324, 1368, 1366, 292, 290, 287, 284, 2118, - 304, 1341, 1339, 1337, 1345, 243, 240, 237, 2086, 233, 2083, 254, - 1297, 1295, 1293, 1290, 1304, 2114, 190, 187, 184, 2034, 180, 2031, - 177, 2027, 199, 1233, 1231, 1229, 1226, 217, 1223, 1241, 2078, 2076, - 584, 555, 554, 552, 550, 2282, 562, 1586, 507, 506, 504, 502, 2257, - 499, 2254, 515, 1563, 1561, 445, 443, 441, 2219, 438, 2216, 435, 2212, - 460, 454, 475, 1517, 1515, 1512, 2447, 798, 797, 2422, 2419, 770, 768, - 766, 2383, 2380, 2376, 721, 719, 717, 714, 731, 1714, 2602, 2582, - 2580, 2548, 2546, 2543, 923, 921, 2717, 2706, 2705, 2683, 2682, 2680, - 1771, 1752, 1750, 1733, 1732, 1731, 1735, 1814, 1707, 1670, 1668, - 1631, 1629, 1626, 1634, 1599, 1598, 1596, 1594, 1603, 1601, 2326, - 1772, 1753, 1751, 1581, 1554, 1552, 1504, 1501, 1498, 1509, 1442, - 1437, 1434, 401, 1448, 1445, 2206, 1392, 1391, 1389, 1387, 1384, 359, - 1399, 1397, 1394, 1404, 2171, 2170, 1708, 1672, 1669, 619, 1632, 1630, - 1628, 1773, 1378, 1363, 1361, 1333, 1328, 1336, 1286, 1281, 1278, 248, - 1292, 1289, 2111, 1218, 1216, 1210, 197, 1206, 193, 1228, 1225, 1221, - 1236, 2073, 2071, 1151, 1150, 1148, 1146, 152, 1143, 149, 1140, 145, - 1161, 1159, 1156, 1153, 158, 1169, 1166, 2017, 2016, 2014, 2019, 1582, - 510, 1556, 1553, 452, 448, 1506, 1500, 394, 391, 387, 1443, 1441, - 1439, 1436, 1450, 2207, 765, 716, 713, 1709, 662, 660, 657, 1673, - 1671, 916, 914, 879, 878, 877, 882, 1135, 1134, 1121, 1120, 1118, - 1123, 1097, 1096, 1094, 1092, 103, 1101, 1099, 1979, 1059, 1058, 1056, - 1054, 77, 1051, 74, 1066, 1064, 1061, 1071, 1964, 1963, 1007, 1006, - 1004, 1002, 999, 41, 996, 37, 1017, 1015, 1012, 1009, 52, 1025, 1022, - 1936, 1935, 1933, 1938, 942, 940, 938, 935, 932, 5, 2, 955, 953, 950, - 947, 18, 943, 15, 965, 962, 958, 1895, 1894, 1892, 1890, 973, 1899, - 1897, 1379, 325, 1364, 1362, 288, 285, 1334, 1332, 1330, 241, 238, - 234, 1287, 1285, 1283, 1280, 1294, 2112, 188, 185, 181, 178, 2028, - 1219, 1217, 1215, 1212, 200, 1209, 1227, 2074, 2072, 583, 553, 551, - 1583, 505, 503, 500, 513, 1557, 1555, 444, 442, 439, 436, 2213, 455, - 451, 1507, 1505, 1502, 796, 763, 762, 760, 767, 711, 710, 708, 706, - 2377, 718, 715, 1710, 2544, 917, 915, 2681, 1627, 1597, 1595, 2325, - 1769, 1749, 1747, 1499, 1438, 1435, 2204, 1390, 1388, 1385, 1395, - 2169, 2167, 1704, 1665, 1662, 1625, 1623, 1620, 1770, 1329, 1282, - 1279, 2109, 1214, 1207, 1222, 2068, 2065, 1149, 1147, 1144, 1141, 146, - 1157, 1154, 2013, 2011, 2008, 2015, 1579, 1549, 1546, 1495, 1487, - 1433, 1431, 1428, 1425, 388, 1440, 2205, 1705, 658, 1667, 1664, 1119, - 1095, 1093, 1978, 1057, 1055, 1052, 1062, 1962, 1960, 1005, 1003, - 1000, 997, 38, 1013, 1010, 1932, 1930, 1927, 1934, 941, 939, 936, 933, - 6, 930, 3, 951, 948, 944, 1889, 1887, 1884, 1881, 959, 1893, 1891, 35, - 1377, 1360, 1358, 1327, 1325, 1322, 1331, 1277, 1275, 1272, 1269, 235, - 1284, 2110, 1205, 1204, 1201, 1198, 182, 1195, 179, 1213, 2070, 2067, - 1580, 501, 1551, 1548, 440, 437, 1497, 1494, 1490, 1503, 761, 709, - 707, 1706, 913, 912, 2198, 1386, 2164, 2161, 1621, 1766, 2103, 1208, - 2058, 2054, 1145, 1142, 2005, 2002, 1999, 2009, 1488, 1429, 1426, - 2200, 1698, 1659, 1656, 1975, 1053, 1957, 1954, 1001, 998, 1924, 1921, - 1918, 1928, 937, 934, 931, 1879, 1876, 1873, 1870, 945, 1885, 1882, - 1323, 1273, 1270, 2105, 1202, 1199, 1196, 1211, 2061, 2057, 1576, - 1543, 1540, 1484, 1481, 1478, 1491, 1700 }; + /** + * This table contains to codewords for all symbols. + */ + private static final int[] CODEWORD_TABLE = {2627, 1819, 2622, 2621, 1813, + 1812, 2729, 2724, 2723, 2779, 2774, 2773, 902, 896, 908, 868, 865, + 861, 859, 2511, 873, 871, 1780, 835, 2493, 825, 2491, 842, 837, 844, + 1764, 1762, 811, 810, 809, 2483, 807, 2482, 806, 2480, 815, 814, 813, + 812, 2484, 817, 816, 1745, 1744, 1742, 1746, 2655, 2637, 2635, 2626, + 2625, 2623, 2628, 1820, 2752, 2739, 2737, 2728, 2727, 2725, 2730, + 2785, 2783, 2778, 2777, 2775, 2780, 787, 781, 747, 739, 736, 2413, + 754, 752, 1719, 692, 689, 681, 2371, 678, 2369, 700, 697, 694, 703, + 1688, 1686, 642, 638, 2343, 631, 2341, 627, 2338, 651, 646, 643, 2345, + 654, 652, 1652, 1650, 1647, 1654, 601, 599, 2322, 596, 2321, 594, + 2319, 2317, 611, 610, 608, 606, 2324, 603, 2323, 615, 614, 612, 1617, + 1616, 1614, 1612, 616, 1619, 1618, 2575, 2538, 2536, 905, 901, 898, + 909, 2509, 2507, 2504, 870, 867, 864, 860, 2512, 875, 872, 1781, 2490, + 2489, 2487, 2485, 1748, 836, 834, 832, 830, 2494, 827, 2492, 843, 841, + 839, 845, 1765, 1763, 2701, 2676, 2674, 2653, 2648, 2656, 2634, 2633, + 2631, 2629, 1821, 2638, 2636, 2770, 2763, 2761, 2750, 2745, 2753, + 2736, 2735, 2733, 2731, 1848, 2740, 2738, 2786, 2784, 591, 588, 576, + 569, 566, 2296, 1590, 537, 534, 526, 2276, 522, 2274, 545, 542, 539, + 548, 1572, 1570, 481, 2245, 466, 2242, 462, 2239, 492, 485, 482, 2249, + 496, 494, 1534, 1531, 1528, 1538, 413, 2196, 406, 2191, 2188, 425, + 419, 2202, 415, 2199, 432, 430, 427, 1472, 1467, 1464, 433, 1476, + 1474, 368, 367, 2160, 365, 2159, 362, 2157, 2155, 2152, 378, 377, 375, + 2166, 372, 2165, 369, 2162, 383, 381, 379, 2168, 1419, 1418, 1416, + 1414, 385, 1411, 384, 1423, 1422, 1420, 1424, 2461, 802, 2441, 2439, + 790, 786, 783, 794, 2409, 2406, 2403, 750, 742, 738, 2414, 756, 753, + 1720, 2367, 2365, 2362, 2359, 1663, 693, 691, 684, 2373, 680, 2370, + 702, 699, 696, 704, 1690, 1687, 2337, 2336, 2334, 2332, 1624, 2329, + 1622, 640, 637, 2344, 634, 2342, 630, 2340, 650, 648, 645, 2346, 655, + 653, 1653, 1651, 1649, 1655, 2612, 2597, 2595, 2571, 2568, 2565, 2576, + 2534, 2529, 2526, 1787, 2540, 2537, 907, 904, 900, 910, 2503, 2502, + 2500, 2498, 1768, 2495, 1767, 2510, 2508, 2506, 869, 866, 863, 2513, + 876, 874, 1782, 2720, 2713, 2711, 2697, 2694, 2691, 2702, 2672, 2670, + 2664, 1828, 2678, 2675, 2647, 2646, 2644, 2642, 1823, 2639, 1822, + 2654, 2652, 2650, 2657, 2771, 1855, 2765, 2762, 1850, 1849, 2751, + 2749, 2747, 2754, 353, 2148, 344, 342, 336, 2142, 332, 2140, 345, + 1375, 1373, 306, 2130, 299, 2128, 295, 2125, 319, 314, 311, 2132, + 1354, 1352, 1349, 1356, 262, 257, 2101, 253, 2096, 2093, 274, 273, + 267, 2107, 263, 2104, 280, 278, 275, 1316, 1311, 1308, 1320, 1318, + 2052, 202, 2050, 2044, 2040, 219, 2063, 212, 2060, 208, 2055, 224, + 221, 2066, 1260, 1258, 1252, 231, 1248, 229, 1266, 1264, 1261, 1268, + 155, 1998, 153, 1996, 1994, 1991, 1988, 165, 164, 2007, 162, 2006, + 159, 2003, 2000, 172, 171, 169, 2012, 166, 2010, 1186, 1184, 1182, + 1179, 175, 1176, 173, 1192, 1191, 1189, 1187, 176, 1194, 1193, 2313, + 2307, 2305, 592, 589, 2294, 2292, 2289, 578, 572, 568, 2297, 580, + 1591, 2272, 2267, 2264, 1547, 538, 536, 529, 2278, 525, 2275, 547, + 544, 541, 1574, 1571, 2237, 2235, 2229, 1493, 2225, 1489, 478, 2247, + 470, 2244, 465, 2241, 493, 488, 484, 2250, 498, 495, 1536, 1533, 1530, + 1539, 2187, 2186, 2184, 2182, 1432, 2179, 1430, 2176, 1427, 414, 412, + 2197, 409, 2195, 405, 2193, 2190, 426, 424, 421, 2203, 418, 2201, 431, + 429, 1473, 1471, 1469, 1466, 434, 1477, 1475, 2478, 2472, 2470, 2459, + 2457, 2454, 2462, 803, 2437, 2432, 2429, 1726, 2443, 2440, 792, 789, + 785, 2401, 2399, 2393, 1702, 2389, 1699, 2411, 2408, 2405, 745, 741, + 2415, 758, 755, 1721, 2358, 2357, 2355, 2353, 1661, 2350, 1660, 2347, + 1657, 2368, 2366, 2364, 2361, 1666, 690, 687, 2374, 683, 2372, 701, + 698, 705, 1691, 1689, 2619, 2617, 2610, 2608, 2605, 2613, 2593, 2588, + 2585, 1803, 2599, 2596, 2563, 2561, 2555, 1797, 2551, 1795, 2573, + 2570, 2567, 2577, 2525, 2524, 2522, 2520, 1786, 2517, 1785, 2514, + 1783, 2535, 2533, 2531, 2528, 1788, 2541, 2539, 906, 903, 911, 2721, + 1844, 2715, 2712, 1838, 1836, 2699, 2696, 2693, 2703, 1827, 1826, + 1824, 2673, 2671, 2669, 2666, 1829, 2679, 2677, 1858, 1857, 2772, + 1854, 1853, 1851, 1856, 2766, 2764, 143, 1987, 139, 1986, 135, 133, + 131, 1984, 128, 1983, 125, 1981, 138, 137, 136, 1985, 1133, 1132, + 1130, 112, 110, 1974, 107, 1973, 104, 1971, 1969, 122, 121, 119, 117, + 1977, 114, 1976, 124, 1115, 1114, 1112, 1110, 1117, 1116, 84, 83, + 1953, 81, 1952, 78, 1950, 1948, 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207, 2053, 205, 2051, 201, + 2049, 2046, 2043, 220, 218, 2064, 215, 2062, 211, 2059, 228, 226, 223, + 2069, 1259, 1257, 1254, 232, 1251, 230, 1267, 1265, 1263, 2316, 2315, + 2312, 2311, 2309, 2314, 2304, 2303, 2301, 2299, 1593, 2308, 2306, 590, + 2288, 2287, 2285, 2283, 1578, 2280, 1577, 2295, 2293, 2291, 579, 577, + 574, 571, 2298, 582, 581, 1592, 2263, 2262, 2260, 2258, 1545, 2255, + 1544, 2252, 1541, 2273, 2271, 2269, 2266, 1550, 535, 532, 2279, 528, + 2277, 546, 543, 549, 1575, 1573, 2224, 2222, 2220, 1486, 2217, 1485, + 2214, 1482, 1479, 2238, 2236, 2234, 2231, 1496, 2228, 1492, 480, 477, + 2248, 473, 2246, 469, 2243, 490, 487, 2251, 497, 1537, 1535, 1532, + 2477, 2476, 2474, 2479, 2469, 2468, 2466, 2464, 1730, 2473, 2471, + 2453, 2452, 2450, 2448, 1729, 2445, 1728, 2460, 2458, 2456, 2463, 805, + 804, 2428, 2427, 2425, 2423, 1725, 2420, 1724, 2417, 1722, 2438, 2436, + 2434, 2431, 1727, 2444, 2442, 793, 791, 788, 795, 2388, 2386, 2384, + 1697, 2381, 1696, 2378, 1694, 1692, 2402, 2400, 2398, 2395, 1703, + 2392, 1701, 2412, 2410, 2407, 751, 748, 744, 2416, 759, 757, 1807, + 2620, 2618, 1806, 1805, 2611, 2609, 2607, 2614, 1802, 1801, 1799, + 2594, 2592, 2590, 2587, 1804, 2600, 2598, 1794, 1793, 1791, 1789, + 2564, 2562, 2560, 2557, 1798, 2554, 1796, 2574, 2572, 2569, 2578, + 1847, 1846, 2722, 1843, 1842, 1840, 1845, 2716, 2714, 1835, 1834, + 1832, 1830, 1839, 1837, 2700, 2698, 2695, 2704, 1817, 1811, 1810, 897, + 862, 1777, 829, 826, 838, 1760, 1758, 808, 2481, 1741, 1740, 1738, + 1743, 2624, 1818, 2726, 2776, 782, 740, 737, 1715, 686, 679, 695, + 1682, 1680, 639, 628, 2339, 647, 644, 1645, 1643, 1640, 1648, 602, + 600, 597, 595, 2320, 593, 2318, 609, 607, 604, 1611, 1610, 1608, 1606, + 613, 1615, 1613, 2328, 926, 924, 892, 886, 899, 857, 850, 2505, 1778, + 824, 823, 821, 819, 2488, 818, 2486, 833, 831, 828, 840, 1761, 1759, + 2649, 2632, 2630, 2746, 2734, 2732, 2782, 2781, 570, 567, 1587, 531, + 527, 523, 540, 1566, 1564, 476, 467, 463, 2240, 486, 483, 1524, 1521, + 1518, 1529, 411, 403, 2192, 399, 2189, 423, 416, 1462, 1457, 1454, + 428, 1468, 1465, 2210, 366, 363, 2158, 360, 2156, 357, 2153, 376, 373, + 370, 2163, 1410, 1409, 1407, 1405, 382, 1402, 380, 1417, 1415, 1412, + 1421, 2175, 2174, 777, 774, 771, 784, 732, 725, 722, 2404, 743, 1716, + 676, 674, 668, 2363, 665, 2360, 685, 1684, 1681, 626, 624, 622, 2335, + 620, 2333, 617, 2330, 641, 635, 649, 1646, 1644, 1642, 2566, 928, 925, + 2530, 2527, 894, 891, 888, 2501, 2499, 2496, 858, 856, 854, 851, 1779, + 2692, 2668, 2665, 2645, 2643, 2640, 2651, 2768, 2759, 2757, 2744, + 2743, 2741, 2748, 352, 1382, 340, 337, 333, 1371, 1369, 307, 300, 296, + 2126, 315, 312, 1347, 1342, 1350, 261, 258, 250, 2097, 246, 2094, 271, + 268, 264, 1306, 1301, 1298, 276, 1312, 1309, 2115, 203, 2048, 195, + 2045, 191, 2041, 213, 209, 2056, 1246, 1244, 1238, 225, 1234, 222, + 1256, 1253, 1249, 1262, 2080, 2079, 154, 1997, 150, 1995, 147, 1992, + 1989, 163, 160, 2004, 156, 2001, 1175, 1174, 1172, 1170, 1167, 170, + 1164, 167, 1185, 1183, 1180, 1177, 174, 1190, 1188, 2025, 2024, 2022, + 587, 586, 564, 559, 556, 2290, 573, 1588, 520, 518, 512, 2268, 508, + 2265, 530, 1568, 1565, 461, 457, 2233, 450, 2230, 446, 2226, 479, 471, + 489, 1526, 1523, 1520, 397, 395, 2185, 392, 2183, 389, 2180, 2177, + 410, 2194, 402, 422, 1463, 1461, 1459, 1456, 1470, 2455, 799, 2433, + 2430, 779, 776, 773, 2397, 2394, 2390, 734, 728, 724, 746, 1717, 2356, + 2354, 2351, 2348, 1658, 677, 675, 673, 670, 667, 688, 1685, 1683, + 2606, 2589, 2586, 2559, 2556, 2552, 927, 2523, 2521, 2518, 2515, 1784, + 2532, 895, 893, 890, 2718, 2709, 2707, 2689, 2687, 2684, 2663, 2662, + 2660, 2658, 1825, 2667, 2769, 1852, 2760, 2758, 142, 141, 1139, 1138, + 134, 132, 129, 126, 1982, 1129, 1128, 1126, 1131, 113, 111, 108, 105, + 1972, 101, 1970, 120, 118, 115, 1109, 1108, 1106, 1104, 123, 1113, + 1111, 82, 79, 1951, 75, 1949, 72, 1946, 92, 89, 86, 1956, 1077, 1076, + 1074, 1072, 98, 1069, 96, 1084, 1082, 1079, 1088, 1968, 1967, 48, 45, 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2449, 2446, 801, 800, 2426, 2424, 2421, 2418, 1723, 2435, 780, + 778, 775, 2387, 2385, 2382, 2379, 1695, 2375, 1693, 2396, 735, 733, + 730, 727, 749, 1718, 2616, 2615, 2604, 2603, 2601, 2584, 2583, 2581, + 2579, 1800, 2591, 2550, 2549, 2547, 2545, 1792, 2542, 1790, 2558, 929, + 2719, 1841, 2710, 2708, 1833, 1831, 2690, 2688, 2686, 1815, 1809, + 1808, 1774, 1756, 1754, 1737, 1736, 1734, 1739, 1816, 1711, 1676, + 1674, 633, 629, 1638, 1636, 1633, 1641, 598, 1605, 1604, 1602, 1600, + 605, 1609, 1607, 2327, 887, 853, 1775, 822, 820, 1757, 1755, 1584, + 524, 1560, 1558, 468, 464, 1514, 1511, 1508, 1519, 408, 404, 400, + 1452, 1447, 1444, 417, 1458, 1455, 2208, 364, 361, 358, 2154, 1401, + 1400, 1398, 1396, 374, 1393, 371, 1408, 1406, 1403, 1413, 2173, 2172, + 772, 726, 723, 1712, 672, 669, 666, 682, 1678, 1675, 625, 623, 621, + 618, 2331, 636, 632, 1639, 1637, 1635, 920, 918, 884, 880, 889, 849, + 848, 847, 846, 2497, 855, 852, 1776, 2641, 2742, 2787, 1380, 334, + 1367, 1365, 301, 297, 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1939, 1937, 1942, 8, 1866, 4, + 1863, 1, 1860, 956, 954, 952, 949, 946, 17, 14, 969, 967, 964, 961, + 27, 957, 24, 979, 976, 972, 1901, 1900, 1898, 1896, 986, 1905, 1903, + 350, 349, 1381, 329, 327, 324, 1368, 1366, 292, 290, 287, 284, 2118, + 304, 1341, 1339, 1337, 1345, 243, 240, 237, 2086, 233, 2083, 254, + 1297, 1295, 1293, 1290, 1304, 2114, 190, 187, 184, 2034, 180, 2031, + 177, 2027, 199, 1233, 1231, 1229, 1226, 217, 1223, 1241, 2078, 2076, + 584, 555, 554, 552, 550, 2282, 562, 1586, 507, 506, 504, 502, 2257, + 499, 2254, 515, 1563, 1561, 445, 443, 441, 2219, 438, 2216, 435, 2212, + 460, 454, 475, 1517, 1515, 1512, 2447, 798, 797, 2422, 2419, 770, 768, + 766, 2383, 2380, 2376, 721, 719, 717, 714, 731, 1714, 2602, 2582, + 2580, 2548, 2546, 2543, 923, 921, 2717, 2706, 2705, 2683, 2682, 2680, + 1771, 1752, 1750, 1733, 1732, 1731, 1735, 1814, 1707, 1670, 1668, + 1631, 1629, 1626, 1634, 1599, 1598, 1596, 1594, 1603, 1601, 2326, + 1772, 1753, 1751, 1581, 1554, 1552, 1504, 1501, 1498, 1509, 1442, + 1437, 1434, 401, 1448, 1445, 2206, 1392, 1391, 1389, 1387, 1384, 359, + 1399, 1397, 1394, 1404, 2171, 2170, 1708, 1672, 1669, 619, 1632, 1630, + 1628, 1773, 1378, 1363, 1361, 1333, 1328, 1336, 1286, 1281, 1278, 248, + 1292, 1289, 2111, 1218, 1216, 1210, 197, 1206, 193, 1228, 1225, 1221, + 1236, 2073, 2071, 1151, 1150, 1148, 1146, 152, 1143, 149, 1140, 145, + 1161, 1159, 1156, 1153, 158, 1169, 1166, 2017, 2016, 2014, 2019, 1582, + 510, 1556, 1553, 452, 448, 1506, 1500, 394, 391, 387, 1443, 1441, + 1439, 1436, 1450, 2207, 765, 716, 713, 1709, 662, 660, 657, 1673, + 1671, 916, 914, 879, 878, 877, 882, 1135, 1134, 1121, 1120, 1118, + 1123, 1097, 1096, 1094, 1092, 103, 1101, 1099, 1979, 1059, 1058, 1056, + 1054, 77, 1051, 74, 1066, 1064, 1061, 1071, 1964, 1963, 1007, 1006, + 1004, 1002, 999, 41, 996, 37, 1017, 1015, 1012, 1009, 52, 1025, 1022, + 1936, 1935, 1933, 1938, 942, 940, 938, 935, 932, 5, 2, 955, 953, 950, + 947, 18, 943, 15, 965, 962, 958, 1895, 1894, 1892, 1890, 973, 1899, + 1897, 1379, 325, 1364, 1362, 288, 285, 1334, 1332, 1330, 241, 238, + 234, 1287, 1285, 1283, 1280, 1294, 2112, 188, 185, 181, 178, 2028, + 1219, 1217, 1215, 1212, 200, 1209, 1227, 2074, 2072, 583, 553, 551, + 1583, 505, 503, 500, 513, 1557, 1555, 444, 442, 439, 436, 2213, 455, + 451, 1507, 1505, 1502, 796, 763, 762, 760, 767, 711, 710, 708, 706, + 2377, 718, 715, 1710, 2544, 917, 915, 2681, 1627, 1597, 1595, 2325, + 1769, 1749, 1747, 1499, 1438, 1435, 2204, 1390, 1388, 1385, 1395, + 2169, 2167, 1704, 1665, 1662, 1625, 1623, 1620, 1770, 1329, 1282, + 1279, 2109, 1214, 1207, 1222, 2068, 2065, 1149, 1147, 1144, 1141, 146, + 1157, 1154, 2013, 2011, 2008, 2015, 1579, 1549, 1546, 1495, 1487, + 1433, 1431, 1428, 1425, 388, 1440, 2205, 1705, 658, 1667, 1664, 1119, + 1095, 1093, 1978, 1057, 1055, 1052, 1062, 1962, 1960, 1005, 1003, + 1000, 997, 38, 1013, 1010, 1932, 1930, 1927, 1934, 941, 939, 936, 933, + 6, 930, 3, 951, 948, 944, 1889, 1887, 1884, 1881, 959, 1893, 1891, 35, + 1377, 1360, 1358, 1327, 1325, 1322, 1331, 1277, 1275, 1272, 1269, 235, + 1284, 2110, 1205, 1204, 1201, 1198, 182, 1195, 179, 1213, 2070, 2067, + 1580, 501, 1551, 1548, 440, 437, 1497, 1494, 1490, 1503, 761, 709, + 707, 1706, 913, 912, 2198, 1386, 2164, 2161, 1621, 1766, 2103, 1208, + 2058, 2054, 1145, 1142, 2005, 2002, 1999, 2009, 1488, 1429, 1426, + 2200, 1698, 1659, 1656, 1975, 1053, 1957, 1954, 1001, 998, 1924, 1921, + 1918, 1928, 937, 934, 931, 1879, 1876, 1873, 1870, 945, 1885, 1882, + 1323, 1273, 1270, 2105, 1202, 1199, 1196, 1211, 2061, 2057, 1576, + 1543, 1540, 1484, 1481, 1478, 1491, 1700}; } diff --git a/core/src/com/google/zxing/pdf417/decoder/DecodedBitStreamParser.java b/core/src/com/google/zxing/pdf417/decoder/DecodedBitStreamParser.java index 7e7c9cad9..d2f4d3dff 100644 --- a/core/src/com/google/zxing/pdf417/decoder/DecodedBitStreamParser.java +++ b/core/src/com/google/zxing/pdf417/decoder/DecodedBitStreamParser.java @@ -1,5 +1,5 @@ /* - * Copyright 2007 ZXing authors + * Copyright 2009 ZXing authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -13,6 +13,7 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + package com.google.zxing.pdf417.decoder; import com.google.zxing.ReaderException; @@ -24,607 +25,607 @@ import com.google.zxing.common.DecoderResult; * @author SITA Lab (kevin.osullivan@sita.aero) */ final class DecodedBitStreamParser { - public static final boolean debug = true; - - private static final int TEXT_COMPACTION_MODE_LATCH = 900; - private static final int BYTE_COMPACTION_MODE_LATCH = 901; - private static final int NUMERIC_COMPACTION_MODE_LATCH = 902; - private static final int BYTE_COMPACTION_MODE_LATCH_6 = 924; - private static final int BEGIN_MACRO_PDF417_CONTROL_BLOCK = 928; - private static final int BEGIN_MACRO_PDF417_OPTIONAL_FIELD = 923; - private static final int MACRO_PDF417_TERMINATOR = 922; - private static final int MODE_SHIFT_TO_BYTE_COMPACTION_MODE = 913; - private static final int MAX_NUMERIC_CODEWORDS = 15; - private static final int ALPHA = 0; - private static final int LOWER = 1; - private static final int MIXED = 2; - private static final int PUNCT = 3; - private static final int PUNCT_SHIFT = 4; + private static final int TEXT_COMPACTION_MODE_LATCH = 900; + private static final int BYTE_COMPACTION_MODE_LATCH = 901; + private static final int NUMERIC_COMPACTION_MODE_LATCH = 902; + private static final int BYTE_COMPACTION_MODE_LATCH_6 = 924; + private static final int BEGIN_MACRO_PDF417_CONTROL_BLOCK = 928; + private static final int BEGIN_MACRO_PDF417_OPTIONAL_FIELD = 923; + private static final int MACRO_PDF417_TERMINATOR = 922; + private static final int MODE_SHIFT_TO_BYTE_COMPACTION_MODE = 913; + private static final int MAX_NUMERIC_CODEWORDS = 15; - private static final int PL = 25; - private static final int LL = 27; - private static final int AS = 27; - private static final int ML = 28; - private static final int AL = 28; - private static final int PS = 29; - private static final int PAL = 29; - - private static final char punct_chars[] = {';', '<', '>', '@', '[', 92, '}', '_', 96, '~', '!', - 13, 9, ',', ':', 10, '-', '.', '$', '/', 34, '|', '*', - '(', ')', '?', '{', '}', 39}; + private static final int ALPHA = 0; + private static final int LOWER = 1; + private static final int MIXED = 2; + private static final int PUNCT = 3; + private static final int PUNCT_SHIFT = 4; - private static final char mixed_chars[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '&', - 13, 9, ',', ':', '#', '-', '.', '$', '/', '+', '%', '*', - '=', '^'}; + private static final int PL = 25; + private static final int LL = 27; + private static final int AS = 27; + private static final int ML = 28; + private static final int AL = 28; + private static final int PS = 29; + private static final int PAL = 29; - // Table containing values for the exponent of 900. - // This is used in the numeric compaction decode algorithm. - private static final String exp900[] = - {"000000000000000000000000000000000000000000001", - "000000000000000000000000000000000000000000900", - "000000000000000000000000000000000000000810000", - "000000000000000000000000000000000000729000000", - "000000000000000000000000000000000656100000000", - "000000000000000000000000000000590490000000000", - "000000000000000000000000000531441000000000000", - "000000000000000000000000478296900000000000000", - "000000000000000000000430467210000000000000000", - "000000000000000000387420489000000000000000000", - "000000000000000348678440100000000000000000000", - "000000000000313810596090000000000000000000000", - "000000000282429536481000000000000000000000000", - "000000254186582832900000000000000000000000000", - "000228767924549610000000000000000000000000000", - "205891132094649000000000000000000000000000000"}; - - private DecodedBitStreamParser() { - } + private static final char[] PUNCT_CHARS = {';', '<', '>', '@', '[', 92, '}', '_', 96, '~', '!', + 13, 9, ',', ':', 10, '-', '.', '$', '/', 34, '|', '*', + '(', ')', '?', '{', '}', 39}; - static DecoderResult decode(int codewords[]) throws ReaderException { - StringBuffer result = new StringBuffer(100); - // Get compaction mode - int codeIndex = 1; - int code = codewords[codeIndex++]; - while (codeIndex < codewords[0]) { - switch(code) { - case TEXT_COMPACTION_MODE_LATCH: { - codeIndex = textCompaction(codewords, codeIndex, result); - break; - } - case BYTE_COMPACTION_MODE_LATCH: { - codeIndex = byteCompaction(code, codewords, codeIndex, result); - break; - } - case NUMERIC_COMPACTION_MODE_LATCH: { - codeIndex = numericCompaction(codewords, codeIndex, result); - break; - } - case MODE_SHIFT_TO_BYTE_COMPACTION_MODE: { - codeIndex = byteCompaction(code, codewords, codeIndex, result); - break; - } - case BYTE_COMPACTION_MODE_LATCH_6: { - codeIndex = byteCompaction(code, codewords, codeIndex, result); - break; - } - default: { - // Default to text compaction. During testing numberous barcodes - // appeared to be missing the starting mode. In these cases defaulting - // to text compaction seems to work. - codeIndex--; - codeIndex = textCompaction(codewords, codeIndex, result); - break; - } - } - if (codeIndex < codewords.length) { - code = codewords[codeIndex++]; - } else { - throw ReaderException.getInstance(); - } - } - if (debug) System.out.println(result); - return new DecoderResult(null, result.toString(), null); - } + private static final char[] MIXED_CHARS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '&', + 13, 9, ',', ':', '#', '-', '.', '$', '/', '+', '%', '*', + '=', '^'}; - /** - * Text Compaction mode (see 5.4.1.5) permits all printable ASCII characters to be - * encoded, i.e. values 32 - 126 inclusive in accordance with ISO/IEC 646 (IRV), as - * well as selected control characters. - * - * @param codewords The array of codewords (data + error) - * @param codeIndex The current index into the codeword array. - * @param result The decoded data is appended to the result. - * @return The next index into the codeword array. - */ - private static int textCompaction(int codewords[], int codeIndex, StringBuffer result) { - // 2 character per codeword - int textCompactionData[] = new int[codewords[0] * 2]; - // Used to hold the byte compaction value if there is a mode shift - int byteCompactionData[] = new int[codewords[0] * 2]; + // Table containing values for the exponent of 900. + // This is used in the numeric compaction decode algorithm. + private static final String[] EXP900 = + { "000000000000000000000000000000000000000000001", + "000000000000000000000000000000000000000000900", + "000000000000000000000000000000000000000810000", + "000000000000000000000000000000000000729000000", + "000000000000000000000000000000000656100000000", + "000000000000000000000000000000590490000000000", + "000000000000000000000000000531441000000000000", + "000000000000000000000000478296900000000000000", + "000000000000000000000430467210000000000000000", + "000000000000000000387420489000000000000000000", + "000000000000000348678440100000000000000000000", + "000000000000313810596090000000000000000000000", + "000000000282429536481000000000000000000000000", + "000000254186582832900000000000000000000000000", + "000228767924549610000000000000000000000000000", + "205891132094649000000000000000000000000000000"}; - int index = 0; - int code = 0; - boolean end = false; - while((codeIndex < codewords[0]) && !end) { - code = codewords[codeIndex++]; - if (code < TEXT_COMPACTION_MODE_LATCH) { - textCompactionData[index] = code / 30; - textCompactionData[index+1] = code % 30; - index += 2; - } else { - switch (code) { - case TEXT_COMPACTION_MODE_LATCH: { - codeIndex--; - end = true; - break; - } - case BYTE_COMPACTION_MODE_LATCH: { - codeIndex--; - end = true; - break; - } - case NUMERIC_COMPACTION_MODE_LATCH: { - codeIndex--; - end = true; - break; - } - case MODE_SHIFT_TO_BYTE_COMPACTION_MODE: { - // The Mode Shift codeword 913 shall cause a temporary - // switch from Text Compaction mode to Byte Compaction mode. - // This switch shall be in effect for only the next codeword, - // after which the mode shall revert to the prevailing sub-mode - // of the Text Compaction mode. Codeword 913 is only available - // in Text Compaction mode; its use is described in 5.4.2.4. - textCompactionData[index] = MODE_SHIFT_TO_BYTE_COMPACTION_MODE; - byteCompactionData[index] = code; //Integer.toHexString(code); - index++; - break; - } - case BYTE_COMPACTION_MODE_LATCH_6: { - codeIndex--; - end = true; - break; - } - } - } - } - decodeTextCompaction(textCompactionData, byteCompactionData, index, result); - return codeIndex; - } + private DecodedBitStreamParser() { + } - /** - * The Text Compaction mode includes all the printable ASCII characters - * (i.e. values from 32 to 126) and three ASCII control characters: HT or tab - * (ASCII value 9), LF or line feed (ASCII value 10), and CR or carriage - * return (ASCII value 13). The Text Compaction mode also includes various latch - * and shift characters which are used exclusively within the mode. The Text - * Compaction mode encodes up to 2 characters per codeword. The compaction rules - * for converting data into PDF417 codewords are defined in 5.4.2.2. The sub-mode - * switches are defined in 5.4.2.3. - * - * @param textCompactionData The text compaction data. - * @param byteCompactionData The byte compaction data if there - * was a mode shift. - * @param length The size of the text compaction and byte compaction data. - * @param result The decoded data is appended to the result. - */ - private static void decodeTextCompaction(int textCompactionData[], - int byteCompactionData[], - int length, - StringBuffer result) { - // Beginning from an initial state of the Alpha sub-mode - // The default compaction mode for PDF417 in effect at the start of each symbol shall always be Text - // Compaction mode Alpha sub-mode (uppercase alphabetic). A latch codeword from another mode to the Text - // Compaction mode shall always switch to the Text Compaction Alpha sub-mode. - int subMode = ALPHA; - int priorToShiftMode = ALPHA; - int i = 0; - while (i < length) { - int subModeCh = textCompactionData[i]; - char ch = 0; - switch(subMode) { - case ALPHA : - // Alpha (uppercase alphabetic) - if (subModeCh < 26) { - // Upper case Alpha Character - ch = (char)('A' + subModeCh); - } else { - if (subModeCh == 26) { - ch = ' '; - } else if (subModeCh == LL) { - subMode = LOWER; - } else if (subModeCh == ML) { - subMode = MIXED; - } else if (subModeCh == PS) { - // Shift to punctuation - priorToShiftMode = subMode; - subMode = PUNCT_SHIFT; - } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { - result.append((char)byteCompactionData[i]); - } - } - break; - - case LOWER : - // Lower (lowercase alphabetic) - if (subModeCh < 26) { - ch = (char)('a' + subModeCh); - } else { - if (subModeCh == 26) { - ch = ' '; - } else if (subModeCh == AL) { - subMode = ALPHA; - } else if (subModeCh == ML) { - subMode = MIXED; - } else if (subModeCh == PS) { - // Shift to punctuation - priorToShiftMode = subMode; - subMode = PUNCT_SHIFT; - } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { - result.append((char)byteCompactionData[i]); - } - } - break; - - case MIXED : - // Mixed (numeric and some punctuation) - if ( subModeCh < PL ) { - ch = mixed_chars[subModeCh]; - } else { - if (subModeCh == PL) { - subMode = PUNCT; - } else if (subModeCh == 26) { - ch = ' '; - } else if (subModeCh == AS) { - //mode_change = true; - } else if (subModeCh == AL) { - subMode = ALPHA; - } else if (subModeCh == PS) { - // Shift to punctuation - priorToShiftMode = subMode; - subMode = PUNCT_SHIFT; - } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { - result.append((char)byteCompactionData[i]); - } - } - break; - - case PUNCT : - // Punctuation - if (subModeCh < PS) { - ch = punct_chars[subModeCh]; - } else { - if (subModeCh == PAL) { - subMode = ALPHA; - } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { - result.append((char)byteCompactionData[i]); - } - } - break; - - case PUNCT_SHIFT : - // Restore sub-mode - subMode = priorToShiftMode; - if (subModeCh < PS) { - ch = punct_chars[subModeCh]; - } else { - if (subModeCh == PAL) { - subMode = ALPHA; - } - } - break; - } - if (ch !=0) { - // Append decoded character to result - result.append(ch); - } - i++; - } - } - - /** - * Byte Compaction mode (see 5.4.3) permits all 256 possible 8-bit byte values to be encoded. - * This includes all ASCII characters value 0 to 127 inclusive and provides for international - * character set support. - * @param mode The byte compaction mode i.e. 901 or 924 - * @param codewords The array of codewords (data + error) - * @param codeIndex The current index into the codeword array. - * @param result The decoded data is appended to the result. - * @return The next index into the codeword array. - */ - private static int byteCompaction(int mode, int codewords[], int codeIndex, StringBuffer result) { - if (mode == BYTE_COMPACTION_MODE_LATCH) { - // Total number of Byte Compaction characters to be encoded - // is not a multiple of 6 - int count = 0; - long value = 0; - char decodedData[] = new char[6]; - int byteCompactedCodewords[] = new int[6]; - int code = 0; - boolean end = false; - while(( codeIndex < codewords[0]) && !end) { - code = codewords[codeIndex++]; - if (code < TEXT_COMPACTION_MODE_LATCH) { - byteCompactedCodewords[count] = code; - count++; - // Base 900 - value *= 900; - value += code; - } else { - if ((code == TEXT_COMPACTION_MODE_LATCH) || - (code == BYTE_COMPACTION_MODE_LATCH) || - (code == NUMERIC_COMPACTION_MODE_LATCH) || - (code == BYTE_COMPACTION_MODE_LATCH_6) || - (code == BEGIN_MACRO_PDF417_CONTROL_BLOCK) || - (code == BEGIN_MACRO_PDF417_OPTIONAL_FIELD) || - (code == MACRO_PDF417_TERMINATOR)) { - } - codeIndex--; - end = true; - } - if ((count % 5 == 0) && (count > 0)) { - // Decode every 5 codewords - // Convert to Base 256 - for (int j = 0; j < 6; ++j) { - decodedData[5 - j] = (char) (value % 256); - value >>= 8; - } - result.append(decodedData); - count = 0; - } - } - // If Byte Compaction mode is invoked with codeword 901, - // the final group of codewords is interpreted directly - // as one byte per codeword, without compaction. - for (int i = (( count / 5) * 5); i < count; i++) { - result.append((char)byteCompactedCodewords[i]); - } - - } else if (mode == BYTE_COMPACTION_MODE_LATCH_6) { - // Total number of Byte Compaction characters to be encoded - // is an integer multiple of 6 - int count = 0; - long value = 0; - int code = 0; - boolean end = false; - while(( codeIndex < codewords[0]) && !end) { - code = codewords[codeIndex++]; - char decodedData[] = new char[6]; - if (code < TEXT_COMPACTION_MODE_LATCH) { - count += 1; - // Base 900 - value *= 900; - value += code; - } else { - if ((code == TEXT_COMPACTION_MODE_LATCH) || - (code == BYTE_COMPACTION_MODE_LATCH) || - (code == NUMERIC_COMPACTION_MODE_LATCH) || - (code == BYTE_COMPACTION_MODE_LATCH_6) || - (code == BEGIN_MACRO_PDF417_CONTROL_BLOCK) || - (code == BEGIN_MACRO_PDF417_OPTIONAL_FIELD) || - (code == MACRO_PDF417_TERMINATOR)) { - } - codeIndex--; - end = true; - } - if ((count % 5 == 0) && ( count > 0)) { - // Decode every 5 codewords - // Convert to Base 256 - for (int j = 0; j < 6; ++j) { - decodedData[5 - j] = (char) (value % 256); - value >>= 8; - } - result.append(decodedData); - } - } - } - return codeIndex; - } - - /** - * Numeric Compaction mode (see 5.4.4) permits efficient encoding of numeric data strings. - * - * @param codewords The array of codewords (data + error) - * @param codeIndex The current index into the codeword array. - * @param result The decoded data is appended to the result. - * @return The next index into the codeword array. - */ - private static int numericCompaction(int codewords[], int codeIndex, StringBuffer result) { - int code; - int count = 0; - boolean end = false; - - int numericCodewords[] = new int[MAX_NUMERIC_CODEWORDS]; - - while ((codeIndex < codewords.length) && !end) { - code = codewords[codeIndex++]; - if (code < TEXT_COMPACTION_MODE_LATCH) { - numericCodewords[count] = code; - count++; - } else { - if ((code == TEXT_COMPACTION_MODE_LATCH) || - (code == BYTE_COMPACTION_MODE_LATCH) || - (code == BYTE_COMPACTION_MODE_LATCH_6) || - (code == BEGIN_MACRO_PDF417_CONTROL_BLOCK) || - (code == BEGIN_MACRO_PDF417_OPTIONAL_FIELD) || - (code == MACRO_PDF417_TERMINATOR)) { - } - codeIndex--; - end = true; - } - if ((count % MAX_NUMERIC_CODEWORDS) == 0 || - code == NUMERIC_COMPACTION_MODE_LATCH) { - // Re-invoking Numeric Compaction mode (by using codeword 902 - // while in Numeric Compaction mode) serves to terminate the - // current Numeric Compaction mode grouping as described in 5.4.4.2, - // and then to start a new one grouping. - String s = decodeBase900toBase10(numericCodewords, count); - result.append(s); - count = 0; - } - } - return codeIndex; - } - - /** - * Convert a list of Numeric Compacted codewords from Base 900 to Base 10. - * @param codewords The array of codewords - * @param count The number of codewords - * @return The decoded string representing the Numeric data. - */ - /* - EXAMPLE - Encode the fifteen digit numeric string 000213298174000 - Prefix the numeric string with a 1 and set the initial value of - t = 1 000 213 298 174 000 - Calculate codeword 0 - d0 = 1 000 213 298 174 000 mod 900 = 200 - - t = 1 000 213 298 174 000 div 900 = 1 111 348 109 082 - Calculate codeword 1 - d1 = 1 111 348 109 082 mod 900 = 282 - - t = 1 111 348 109 082 div 900 = 1 234 831 232 - Calculate codeword 2 - d2 = 1 234 831 232 mod 900 = 632 - - t = 1 234 831 232 div 900 = 1 372 034 - Calculate codeword 3 - d3 = 1 372 034 mod 900 = 434 - - t = 1 372 034 div 900 = 1 524 - Calculate codeword 4 - d4 = 1 524 mod 900 = 624 - - t = 1 524 div 900 = 1 - Calculate codeword 5 - d5 = 1 mod 900 = 1 - t = 1 div 900 = 0 - Codeword sequence is: 1, 624, 434, 632, 282, 200 - - Decode the above codewords involves - 1 x 900 power of 5 + 624 x 900 power of 4 + 434 x 900 power of 3 + - 632 x 900 power of 2 + 282 x 900 power of 1 + 200 x 900 power of 0 = 1000213298174000 - - Remove leading 1 => Result is 000213298174000 - - As there are huge numbers involved here we must use fake out the maths using string - tokens for the numbers. - BigDecimal is not supported by J2ME. - */ - private static String decodeBase900toBase10(int codewords[], int count) { - StringBuffer accum = null; - StringBuffer value = null; - for (int i = 0; i < count; i++) { - value = multiply(exp900[count - i - 1], codewords[i]); - if (accum == null) { - // First time in accum=0 - accum = value; - } else { - accum = add(accum.toString(), value.toString()); - } - } - String result = null; - // Remove leading '1' which was inserted to preserce - // leading zeros - for (int i = 0; i < accum.length(); i++) { - if (accum.charAt(i) == '1') { - //result = accum.substring(i + 1); - result = accum.toString().substring(i+1); - break; - } - } - if (result == null) { - // No leading 1 => just write the converted number. - result = accum.toString(); - } - if (debug) System.out.println("Big Integer=" + result); - return result; - } - - /** - * Multiplies two String numbers - * @param value1 Any number represented as a string. - * @param value2 A number <= 999. - * @return the result of value1 * value2. - */ - private static StringBuffer multiply(String value1, int value2) { - StringBuffer result = new StringBuffer(value1.length()); - for (int i = 0; i < value1.length(); i++) { - // Put zeros into the result. - result.append('0'); - } - int hundreds = value2 / 100; - int tens = (value2 / 10) % 10; - int ones = value2 % 10; - // Multiply by ones - for (int j = 0; j < ones ; j++) { - result = add(result.toString(), value1); + static DecoderResult decode(int[] codewords) throws ReaderException { + StringBuffer result = new StringBuffer(100); + // Get compaction mode + int codeIndex = 1; + int code = codewords[codeIndex++]; + while (codeIndex < codewords[0]) { + switch (code) { + case TEXT_COMPACTION_MODE_LATCH: { + codeIndex = textCompaction(codewords, codeIndex, result); + break; } - // Multiply by tens - for (int j = 0; j < tens ; j++) { - result = add(result.toString(), (value1 + "0").substring(1)); - } - // Multiply by hundreds - for (int j = 0; j < hundreds ; j++) { - result = add(result.toString(), (value1 + "00").substring(2)); - } - return result; - } - - /** - * Add two numbers which are represented as strings. - * @param value1 - * @param value2 - * @return the result of value1 + value2 - */ - private static StringBuffer add(String value1, String value2) { - StringBuffer temp1 = new StringBuffer(5); - StringBuffer temp2 = new StringBuffer(5); - StringBuffer result = new StringBuffer(value1.length()); - for (int i = 0; i < value1.length(); i++) { - // Put zeros into the result. - result.append('0'); - } - int carry = 0; - for (int i = value1.length()-3; i > -1 ; i-=3) { - - temp1.setLength(0); - temp1.append(value1.charAt(i)); - temp1.append(value1.charAt(i + 1)); - temp1.append(value1.charAt(i + 2)); + case BYTE_COMPACTION_MODE_LATCH: { + codeIndex = byteCompaction(code, codewords, codeIndex, result); + break; + } + case NUMERIC_COMPACTION_MODE_LATCH: { + codeIndex = numericCompaction(codewords, codeIndex, result); + break; + } + case MODE_SHIFT_TO_BYTE_COMPACTION_MODE: { + codeIndex = byteCompaction(code, codewords, codeIndex, result); + break; + } + case BYTE_COMPACTION_MODE_LATCH_6: { + codeIndex = byteCompaction(code, codewords, codeIndex, result); + break; + } + default: { + // Default to text compaction. During testing numberous barcodes + // appeared to be missing the starting mode. In these cases defaulting + // to text compaction seems to work. + codeIndex--; + codeIndex = textCompaction(codewords, codeIndex, result); + break; + } + } + if (codeIndex < codewords.length) { + code = codewords[codeIndex++]; + } else { + throw ReaderException.getInstance(); + } + } + return new DecoderResult(null, result.toString(), null); + } - temp2.setLength(0); - temp2.append(value2.charAt(i)); - temp2.append(value2.charAt(i + 1)); - temp2.append(value2.charAt(i + 2)); + /** + * Text Compaction mode (see 5.4.1.5) permits all printable ASCII characters to be + * encoded, i.e. values 32 - 126 inclusive in accordance with ISO/IEC 646 (IRV), as + * well as selected control characters. + * + * @param codewords The array of codewords (data + error) + * @param codeIndex The current index into the codeword array. + * @param result The decoded data is appended to the result. + * @return The next index into the codeword array. + */ + private static int textCompaction(int[] codewords, int codeIndex, StringBuffer result) { + // 2 character per codeword + int[] textCompactionData = new int[codewords[0] * 2]; + // Used to hold the byte compaction value if there is a mode shift + int[] byteCompactionData = new int[codewords[0] * 2]; - int intValue1 = Integer.parseInt(temp1.toString()); - int intValue2 = Integer.parseInt(temp2.toString()); + int index = 0; + int code = 0; + boolean end = false; + while ((codeIndex < codewords[0]) && !end) { + code = codewords[codeIndex++]; + if (code < TEXT_COMPACTION_MODE_LATCH) { + textCompactionData[index] = code / 30; + textCompactionData[index + 1] = code % 30; + index += 2; + } else { + switch (code) { + case TEXT_COMPACTION_MODE_LATCH: { + codeIndex--; + end = true; + break; + } + case BYTE_COMPACTION_MODE_LATCH: { + codeIndex--; + end = true; + break; + } + case NUMERIC_COMPACTION_MODE_LATCH: { + codeIndex--; + end = true; + break; + } + case MODE_SHIFT_TO_BYTE_COMPACTION_MODE: { + // The Mode Shift codeword 913 shall cause a temporary + // switch from Text Compaction mode to Byte Compaction mode. + // This switch shall be in effect for only the next codeword, + // after which the mode shall revert to the prevailing sub-mode + // of the Text Compaction mode. Codeword 913 is only available + // in Text Compaction mode; its use is described in 5.4.2.4. + textCompactionData[index] = MODE_SHIFT_TO_BYTE_COMPACTION_MODE; + byteCompactionData[index] = code; //Integer.toHexString(code); + index++; + break; + } + case BYTE_COMPACTION_MODE_LATCH_6: { + codeIndex--; + end = true; + break; + } + } + } + } + decodeTextCompaction(textCompactionData, byteCompactionData, index, result); + return codeIndex; + } - int sumval = ( intValue1 + intValue2 + carry) % 1000; - carry = (intValue1 + intValue2 + carry) / 1000; - - result.setCharAt(i + 2, (char)((sumval % 10) + '0')); - result.setCharAt(i + 1, (char)(((sumval / 10) % 10) + '0')); - result.setCharAt(i, (char) (( sumval / 100) + '0')); - } - return result; - } - - /* - private static String decodeBase900toBase10(int codewords[], int count) { - BigInteger accum = BigInteger.valueOf(0); - BigInteger value = null; - for (int i = 0; i < count; i++) { - value = BigInteger.valueOf(900).pow(count - i - 1); - value = value.multiply(BigInteger.valueOf(codewords[i])); - accum = accum.add(value); - } - if (debug) System.out.println("Big Integer " + accum); - String result = accum.toString().substring(1); - return result; - } - */ + /** + * The Text Compaction mode includes all the printable ASCII characters + * (i.e. values from 32 to 126) and three ASCII control characters: HT or tab + * (ASCII value 9), LF or line feed (ASCII value 10), and CR or carriage + * return (ASCII value 13). The Text Compaction mode also includes various latch + * and shift characters which are used exclusively within the mode. The Text + * Compaction mode encodes up to 2 characters per codeword. The compaction rules + * for converting data into PDF417 codewords are defined in 5.4.2.2. The sub-mode + * switches are defined in 5.4.2.3. + * + * @param textCompactionData The text compaction data. + * @param byteCompactionData The byte compaction data if there + * was a mode shift. + * @param length The size of the text compaction and byte compaction data. + * @param result The decoded data is appended to the result. + */ + private static void decodeTextCompaction(int[] textCompactionData, + int[] byteCompactionData, + int length, + StringBuffer result) { + // Beginning from an initial state of the Alpha sub-mode + // The default compaction mode for PDF417 in effect at the start of each symbol shall always be Text + // Compaction mode Alpha sub-mode (uppercase alphabetic). A latch codeword from another mode to the Text + // Compaction mode shall always switch to the Text Compaction Alpha sub-mode. + int subMode = ALPHA; + int priorToShiftMode = ALPHA; + int i = 0; + while (i < length) { + int subModeCh = textCompactionData[i]; + char ch = 0; + switch (subMode) { + case ALPHA: + // Alpha (uppercase alphabetic) + if (subModeCh < 26) { + // Upper case Alpha Character + ch = (char) ('A' + subModeCh); + } else { + if (subModeCh == 26) { + ch = ' '; + } else if (subModeCh == LL) { + subMode = LOWER; + } else if (subModeCh == ML) { + subMode = MIXED; + } else if (subModeCh == PS) { + // Shift to punctuation + priorToShiftMode = subMode; + subMode = PUNCT_SHIFT; + } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { + result.append((char) byteCompactionData[i]); + } + } + break; + + case LOWER: + // Lower (lowercase alphabetic) + if (subModeCh < 26) { + ch = (char) ('a' + subModeCh); + } else { + if (subModeCh == 26) { + ch = ' '; + } else if (subModeCh == AL) { + subMode = ALPHA; + } else if (subModeCh == ML) { + subMode = MIXED; + } else if (subModeCh == PS) { + // Shift to punctuation + priorToShiftMode = subMode; + subMode = PUNCT_SHIFT; + } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { + result.append((char) byteCompactionData[i]); + } + } + break; + + case MIXED: + // Mixed (numeric and some punctuation) + if (subModeCh < PL) { + ch = MIXED_CHARS[subModeCh]; + } else { + if (subModeCh == PL) { + subMode = PUNCT; + } else if (subModeCh == 26) { + ch = ' '; + } else if (subModeCh == AS) { + //mode_change = true; + } else if (subModeCh == AL) { + subMode = ALPHA; + } else if (subModeCh == PS) { + // Shift to punctuation + priorToShiftMode = subMode; + subMode = PUNCT_SHIFT; + } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { + result.append((char) byteCompactionData[i]); + } + } + break; + + case PUNCT: + // Punctuation + if (subModeCh < PS) { + ch = PUNCT_CHARS[subModeCh]; + } else { + if (subModeCh == PAL) { + subMode = ALPHA; + } else if (subModeCh == MODE_SHIFT_TO_BYTE_COMPACTION_MODE) { + result.append((char) byteCompactionData[i]); + } + } + break; + + case PUNCT_SHIFT: + // Restore sub-mode + subMode = priorToShiftMode; + if (subModeCh < PS) { + ch = PUNCT_CHARS[subModeCh]; + } else { + if (subModeCh == PAL) { + subMode = ALPHA; + } + } + break; + } + if (ch != 0) { + // Append decoded character to result + result.append(ch); + } + i++; + } + } + + /** + * Byte Compaction mode (see 5.4.3) permits all 256 possible 8-bit byte values to be encoded. + * This includes all ASCII characters value 0 to 127 inclusive and provides for international + * character set support. + * + * @param mode The byte compaction mode i.e. 901 or 924 + * @param codewords The array of codewords (data + error) + * @param codeIndex The current index into the codeword array. + * @param result The decoded data is appended to the result. + * @return The next index into the codeword array. + */ + private static int byteCompaction(int mode, int[] codewords, int codeIndex, StringBuffer result) { + if (mode == BYTE_COMPACTION_MODE_LATCH) { + // Total number of Byte Compaction characters to be encoded + // is not a multiple of 6 + int count = 0; + long value = 0; + char[] decodedData = new char[6]; + int[] byteCompactedCodewords = new int[6]; + int code = 0; + boolean end = false; + while ((codeIndex < codewords[0]) && !end) { + code = codewords[codeIndex++]; + if (code < TEXT_COMPACTION_MODE_LATCH) { + byteCompactedCodewords[count] = code; + count++; + // Base 900 + value *= 900; + value += code; + } else { + if ((code == TEXT_COMPACTION_MODE_LATCH) || + (code == BYTE_COMPACTION_MODE_LATCH) || + (code == NUMERIC_COMPACTION_MODE_LATCH) || + (code == BYTE_COMPACTION_MODE_LATCH_6) || + (code == BEGIN_MACRO_PDF417_CONTROL_BLOCK) || + (code == BEGIN_MACRO_PDF417_OPTIONAL_FIELD) || + (code == MACRO_PDF417_TERMINATOR)) { + } + codeIndex--; + end = true; + } + if ((count % 5 == 0) && (count > 0)) { + // Decode every 5 codewords + // Convert to Base 256 + for (int j = 0; j < 6; ++j) { + decodedData[5 - j] = (char) (value % 256); + value >>= 8; + } + result.append(decodedData); + count = 0; + } + } + // If Byte Compaction mode is invoked with codeword 901, + // the final group of codewords is interpreted directly + // as one byte per codeword, without compaction. + for (int i = ((count / 5) * 5); i < count; i++) { + result.append((char) byteCompactedCodewords[i]); + } + + } else if (mode == BYTE_COMPACTION_MODE_LATCH_6) { + // Total number of Byte Compaction characters to be encoded + // is an integer multiple of 6 + int count = 0; + long value = 0; + int code = 0; + boolean end = false; + while ((codeIndex < codewords[0]) && !end) { + code = codewords[codeIndex++]; + if (code < TEXT_COMPACTION_MODE_LATCH) { + count += 1; + // Base 900 + value *= 900; + value += code; + } else { + if ((code == TEXT_COMPACTION_MODE_LATCH) || + (code == BYTE_COMPACTION_MODE_LATCH) || + (code == NUMERIC_COMPACTION_MODE_LATCH) || + (code == BYTE_COMPACTION_MODE_LATCH_6) || + (code == BEGIN_MACRO_PDF417_CONTROL_BLOCK) || + (code == BEGIN_MACRO_PDF417_OPTIONAL_FIELD) || + (code == MACRO_PDF417_TERMINATOR)) { + } + codeIndex--; + end = true; + } + if ((count % 5 == 0) && (count > 0)) { + // Decode every 5 codewords + // Convert to Base 256 + char[] decodedData = new char[6]; + for (int j = 0; j < 6; ++j) { + decodedData[5 - j] = (char) (value % 256); + value >>= 8; + } + result.append(decodedData); + } + } + } + return codeIndex; + } + + /** + * Numeric Compaction mode (see 5.4.4) permits efficient encoding of numeric data strings. + * + * @param codewords The array of codewords (data + error) + * @param codeIndex The current index into the codeword array. + * @param result The decoded data is appended to the result. + * @return The next index into the codeword array. + */ + private static int numericCompaction(int[] codewords, int codeIndex, StringBuffer result) { + int count = 0; + boolean end = false; + + int[] numericCodewords = new int[MAX_NUMERIC_CODEWORDS]; + + while ((codeIndex < codewords.length) && !end) { + int code = codewords[codeIndex++]; + if (code < TEXT_COMPACTION_MODE_LATCH) { + numericCodewords[count] = code; + count++; + } else { + if ((code == TEXT_COMPACTION_MODE_LATCH) || + (code == BYTE_COMPACTION_MODE_LATCH) || + (code == BYTE_COMPACTION_MODE_LATCH_6) || + (code == BEGIN_MACRO_PDF417_CONTROL_BLOCK) || + (code == BEGIN_MACRO_PDF417_OPTIONAL_FIELD) || + (code == MACRO_PDF417_TERMINATOR)) { + } + codeIndex--; + end = true; + } + if ((count % MAX_NUMERIC_CODEWORDS) == 0 || + code == NUMERIC_COMPACTION_MODE_LATCH) { + // Re-invoking Numeric Compaction mode (by using codeword 902 + // while in Numeric Compaction mode) serves to terminate the + // current Numeric Compaction mode grouping as described in 5.4.4.2, + // and then to start a new one grouping. + String s = decodeBase900toBase10(numericCodewords, count); + result.append(s); + count = 0; + } + } + return codeIndex; + } + + /** + * Convert a list of Numeric Compacted codewords from Base 900 to Base 10. + * + * @param codewords The array of codewords + * @param count The number of codewords + * @return The decoded string representing the Numeric data. + */ + /* + EXAMPLE + Encode the fifteen digit numeric string 000213298174000 + Prefix the numeric string with a 1 and set the initial value of + t = 1 000 213 298 174 000 + Calculate codeword 0 + d0 = 1 000 213 298 174 000 mod 900 = 200 + + t = 1 000 213 298 174 000 div 900 = 1 111 348 109 082 + Calculate codeword 1 + d1 = 1 111 348 109 082 mod 900 = 282 + + t = 1 111 348 109 082 div 900 = 1 234 831 232 + Calculate codeword 2 + d2 = 1 234 831 232 mod 900 = 632 + + t = 1 234 831 232 div 900 = 1 372 034 + Calculate codeword 3 + d3 = 1 372 034 mod 900 = 434 + + t = 1 372 034 div 900 = 1 524 + Calculate codeword 4 + d4 = 1 524 mod 900 = 624 + + t = 1 524 div 900 = 1 + Calculate codeword 5 + d5 = 1 mod 900 = 1 + t = 1 div 900 = 0 + Codeword sequence is: 1, 624, 434, 632, 282, 200 + + Decode the above codewords involves + 1 x 900 power of 5 + 624 x 900 power of 4 + 434 x 900 power of 3 + + 632 x 900 power of 2 + 282 x 900 power of 1 + 200 x 900 power of 0 = 1000213298174000 + + Remove leading 1 => Result is 000213298174000 + + As there are huge numbers involved here we must use fake out the maths using string + tokens for the numbers. + BigDecimal is not supported by J2ME. + */ + private static String decodeBase900toBase10(int[] codewords, int count) { + StringBuffer accum = null; + StringBuffer value = null; + for (int i = 0; i < count; i++) { + value = multiply(EXP900[count - i - 1], codewords[i]); + if (accum == null) { + // First time in accum=0 + accum = value; + } else { + accum = add(accum.toString(), value.toString()); + } + } + String result = null; + // Remove leading '1' which was inserted to preserce + // leading zeros + for (int i = 0; i < accum.length(); i++) { + if (accum.charAt(i) == '1') { + //result = accum.substring(i + 1); + result = accum.toString().substring(i + 1); + break; + } + } + if (result == null) { + // No leading 1 => just write the converted number. + result = accum.toString(); + } + return result; + } + + /** + * Multiplies two String numbers + * + * @param value1 Any number represented as a string. + * @param value2 A number <= 999. + * @return the result of value1 * value2. + */ + private static StringBuffer multiply(String value1, int value2) { + StringBuffer result = new StringBuffer(value1.length()); + for (int i = 0; i < value1.length(); i++) { + // Put zeros into the result. + result.append('0'); + } + int hundreds = value2 / 100; + int tens = (value2 / 10) % 10; + int ones = value2 % 10; + // Multiply by ones + for (int j = 0; j < ones; j++) { + result = add(result.toString(), value1); + } + // Multiply by tens + for (int j = 0; j < tens; j++) { + result = add(result.toString(), (value1 + '0').substring(1)); + } + // Multiply by hundreds + for (int j = 0; j < hundreds; j++) { + result = add(result.toString(), (value1 + "00").substring(2)); + } + return result; + } + + /** + * Add two numbers which are represented as strings. + * + * @param value1 + * @param value2 + * @return the result of value1 + value2 + */ + private static StringBuffer add(String value1, String value2) { + StringBuffer temp1 = new StringBuffer(5); + StringBuffer temp2 = new StringBuffer(5); + StringBuffer result = new StringBuffer(value1.length()); + for (int i = 0; i < value1.length(); i++) { + // Put zeros into the result. + result.append('0'); + } + int carry = 0; + for (int i = value1.length() - 3; i > -1; i -= 3) { + + temp1.setLength(0); + temp1.append(value1.charAt(i)); + temp1.append(value1.charAt(i + 1)); + temp1.append(value1.charAt(i + 2)); + + temp2.setLength(0); + temp2.append(value2.charAt(i)); + temp2.append(value2.charAt(i + 1)); + temp2.append(value2.charAt(i + 2)); + + int intValue1 = Integer.parseInt(temp1.toString()); + int intValue2 = Integer.parseInt(temp2.toString()); + + int sumval = (intValue1 + intValue2 + carry) % 1000; + carry = (intValue1 + intValue2 + carry) / 1000; + + result.setCharAt(i + 2, (char) ((sumval % 10) + '0')); + result.setCharAt(i + 1, (char) (((sumval / 10) % 10) + '0')); + result.setCharAt(i, (char) ((sumval / 100) + '0')); + } + return result; + } + + /* + private static String decodeBase900toBase10(int codewords[], int count) { + BigInteger accum = BigInteger.valueOf(0); + BigInteger value = null; + for (int i = 0; i < count; i++) { + value = BigInteger.valueOf(900).pow(count - i - 1); + value = value.multiply(BigInteger.valueOf(codewords[i])); + accum = accum.add(value); + } + if (debug) System.out.println("Big Integer " + accum); + String result = accum.toString().substring(1); + return result; + } + */ } diff --git a/core/src/com/google/zxing/pdf417/decoder/Decoder.java b/core/src/com/google/zxing/pdf417/decoder/Decoder.java index ecb097de0..b127ac86f 100644 --- a/core/src/com/google/zxing/pdf417/decoder/Decoder.java +++ b/core/src/com/google/zxing/pdf417/decoder/Decoder.java @@ -1,5 +1,5 @@ /* - * Copyright 2007 ZXing authors + * Copyright 2009 ZXing authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -13,6 +13,7 @@ * See the License for the specific language governing permissions and * limitations under the License. */ + package com.google.zxing.pdf417.decoder; import com.google.zxing.ReaderException; @@ -21,152 +22,126 @@ import com.google.zxing.common.DecoderResult; //import com.google.zxing.pdf417.reedsolomon.ReedSolomonDecoder; /** - *

The main class which implements PDF417 Code decoding -- as + *

The main class which implements PDF417 Code decoding -- as * opposed to locating and extracting the PDF417 Code from an image.

* * @author SITA Lab (kevin.osullivan@sita.aero) */ public final class Decoder { - public static final boolean debug = false; - private static final int MAX_ERRORS = 3; - private static final int MAX_EC_CODEWORDS = 512; - //private final ReedSolomonDecoder rsDecoder; - public Decoder() { - // TODO MGMG - //rsDecoder = new ReedSolomonDecoder(); - } + private static final int MAX_ERRORS = 3; + private static final int MAX_EC_CODEWORDS = 512; + //private final ReedSolomonDecoder rsDecoder; - /** - *

Convenience method that can decode a PDF417 Code represented as a 2D array of booleans. - * "true" is taken to mean a black module.

- * - * @param image booleans representing white/black PDF417 modules - * @return text and bytes encoded within the PDF417 Code - * @throws ReaderException if the PDF417 Code cannot be decoded - */ - public DecoderResult decode(boolean[][] image) throws ReaderException { - int dimension = image.length; - BitMatrix bits = new BitMatrix(dimension); - for (int i = 0; i < dimension; i++) { - for (int j = 0; j < dimension; j++) { - if (image[i][j]) { - bits.set(i, j); - } - } - } - return decode(bits); - } + public Decoder() { + // TODO MGMG + //rsDecoder = new ReedSolomonDecoder(); + } - /** - *

Decodes a PDF417 Code represented as a {@link BitMatrix}. - * A 1 or "true" is taken to mean a black module.

- * - * @param bits booleans representing white/black PDF417 Code modules - * @return text and bytes encoded within the PDF417 Code - * @throws ReaderException if the PDF417 Code cannot be decoded - */ - public DecoderResult decode(BitMatrix bits) throws ReaderException { - // Construct a parser to read the data codewords and error-correction level - long t2; - long t1 = System.currentTimeMillis(); - BitMatrixParser parser = new BitMatrixParser(bits); - int[] codewords = parser.readCodewords(); - if (codewords == null || codewords.length == 0) { - if (debug) System.out.println("No codewords read"); - throw ReaderException.getInstance(); - } - if (debug) { - t2 = System.currentTimeMillis(); - System.out.println("Elapsed time in ms - BitMatrixParser " +(t2-t1)); - } + /** + *

Convenience method that can decode a PDF417 Code represented as a 2D array of booleans. + * "true" is taken to mean a black module.

+ * + * @param image booleans representing white/black PDF417 modules + * @return text and bytes encoded within the PDF417 Code + * @throws ReaderException if the PDF417 Code cannot be decoded + */ + public DecoderResult decode(boolean[][] image) throws ReaderException { + int dimension = image.length; + BitMatrix bits = new BitMatrix(dimension); + for (int i = 0; i < dimension; i++) { + for (int j = 0; j < dimension; j++) { + if (image[i][j]) { + bits.set(i, j); + } + } + } + return decode(bits); + } - int ecLevel = parser.getECLevel(); - int numECCodewords = 1 << (ecLevel+1); - int erasures[] = parser.getErasures(); - - t1 = System.currentTimeMillis(); - correctErrors(codewords, erasures, numECCodewords); - if (debug) { - t2 = System.currentTimeMillis(); - System.out.println("Elapsed time in ms - Reed Solomon " +(t2-t1)); - } - verifyCodewordCount(codewords, numECCodewords); - - t1 = System.currentTimeMillis(); - DecoderResult dr = DecodedBitStreamParser.decode(codewords); - if (debug) { - t2 = System.currentTimeMillis(); - System.out.println("Elapsed time in ms - DecodeBitStreamParser " +(t2-t1)); - } - // Decode the codewords - return dr; - } + /** + *

Decodes a PDF417 Code represented as a {@link BitMatrix}. + * A 1 or "true" is taken to mean a black module.

+ * + * @param bits booleans representing white/black PDF417 Code modules + * @return text and bytes encoded within the PDF417 Code + * @throws ReaderException if the PDF417 Code cannot be decoded + */ + public DecoderResult decode(BitMatrix bits) throws ReaderException { + // Construct a parser to read the data codewords and error-correction level + BitMatrixParser parser = new BitMatrixParser(bits); + int[] codewords = parser.readCodewords(); + if (codewords == null || codewords.length == 0) { + throw ReaderException.getInstance(); + } - /** - * Verify that all is OK with the codeword array. - * @param codewords - * @return an index to the first data codeword. - * @throws ReaderException - */ - private int verifyCodewordCount(int codewords[], int numECCodewords) throws ReaderException { - int numberOfCodewords = 0; - if (codewords.length < 4) { - // Codeword array size should be at least 4 allowing for - // Count CW, At least one Data CW, Error Correction CW, Error Correction CW - if (debug) System.out.println("Not enough codewords " + codewords.length); - throw ReaderException.getInstance(); - } - // The first codeword, the Symbol Length Descriptor, shall always encode the total number of data - // codewords in the symbol, including the Symbol Length Descriptor itself, data codewords and pad - // codewords, but excluding the number of error correction codewords. - numberOfCodewords = codewords[0]; - if (numberOfCodewords > codewords.length) { - if (debug) System.out.println("Invalid number of codewords[0]=" + numberOfCodewords + " codewords.length=" + codewords.length); - throw ReaderException.getInstance(); - } - if (numberOfCodewords == 0) { - // Reset to the length of the array - 8 (Allow for at least level 3 Error Correction (8 Error Codewords) - if (numECCodewords < codewords.length) { - codewords[0] = codewords.length - numECCodewords; - if (debug) System.out.println("Codewords[0] is zero, resetting to " +(codewords[0])); - } else { - if (debug) System.out.println("Codewords[0] is zero, no data codewords"); - throw ReaderException.getInstance(); - } - } - return 1; // Index to first data codeword - } + int ecLevel = parser.getECLevel(); + int numECCodewords = 1 << (ecLevel + 1); + int[] erasures = parser.getErasures(); - /** - *

Given data and error-correction codewords received, possibly corrupted by errors, attempts to - * correct the errors in-place using Reed-Solomon error correction.

- * - * @param codewordBytes data and error correction codewords - * @param numDataCodewords number of codewords that are data bytes - * @throws ReaderException if error correction fails - */ - private int correctErrors(int[] codewords, int[] erasures, int numECCodewords) throws ReaderException { - if ((erasures != null && erasures.length > numECCodewords/2 + MAX_ERRORS) || - (numECCodewords < 0 || numECCodewords > MAX_EC_CODEWORDS)) { - // Too many errors or EC Codewords is corrupted - throw ReaderException.getInstance(); - } - // Try to correct the errors - int result = 0; // rsDecoder.correctErrors(codewords, numECCodewords); - if (debug) { - System.out.println("Corrected errors: " + result); - } - if (erasures != null) { - int numErasures = erasures.length; - if (result > 0) { - numErasures = numErasures - result; - } - if (numErasures > MAX_ERRORS) { - // Still too many errors - throw ReaderException.getInstance(); - } - } - return result; + correctErrors(codewords, erasures, numECCodewords); + verifyCodewordCount(codewords, numECCodewords); + + // Decode the codewords + return DecodedBitStreamParser.decode(codewords); + } + + /** + * Verify that all is OK with the codeword array. + * + * @param codewords + * @return an index to the first data codeword. + * @throws ReaderException + */ + private static int verifyCodewordCount(int[] codewords, int numECCodewords) throws ReaderException { + if (codewords.length < 4) { + // Codeword array size should be at least 4 allowing for + // Count CW, At least one Data CW, Error Correction CW, Error Correction CW + throw ReaderException.getInstance(); + } + // The first codeword, the Symbol Length Descriptor, shall always encode the total number of data + // codewords in the symbol, including the Symbol Length Descriptor itself, data codewords and pad + // codewords, but excluding the number of error correction codewords. + int numberOfCodewords = codewords[0]; + if (numberOfCodewords > codewords.length) { + throw ReaderException.getInstance(); + } + if (numberOfCodewords == 0) { + // Reset to the length of the array - 8 (Allow for at least level 3 Error Correction (8 Error Codewords) + if (numECCodewords < codewords.length) { + codewords[0] = codewords.length - numECCodewords; + } else { + throw ReaderException.getInstance(); + } + } + return 1; // Index to first data codeword + } + + /** + *

Given data and error-correction codewords received, possibly corrupted by errors, attempts to + * correct the errors in-place using Reed-Solomon error correction.

+ * + * @param codewords data and error correction codewords + * @throws ReaderException if error correction fails + */ + private static int correctErrors(int[] codewords, int[] erasures, int numECCodewords) throws ReaderException { + if ((erasures != null && erasures.length > numECCodewords / 2 + MAX_ERRORS) || + (numECCodewords < 0 || numECCodewords > MAX_EC_CODEWORDS)) { + // Too many errors or EC Codewords is corrupted + throw ReaderException.getInstance(); + } + // Try to correct the errors + int result = 0; // rsDecoder.correctErrors(codewords, numECCodewords); + if (erasures != null) { + int numErasures = erasures.length; + if (result > 0) { + numErasures -= result; + } + if (numErasures > MAX_ERRORS) { + // Still too many errors + throw ReaderException.getInstance(); + } + } + return result; } } diff --git a/core/src/com/google/zxing/pdf417/detector/Detector.java b/core/src/com/google/zxing/pdf417/detector/Detector.java index 0a1f3e154..8a483fb0a 100644 --- a/core/src/com/google/zxing/pdf417/detector/Detector.java +++ b/core/src/com/google/zxing/pdf417/detector/Detector.java @@ -1,5 +1,5 @@ /* - * Copyright 2007 ZXing authors + * Copyright 2009 ZXing authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -16,8 +16,6 @@ package com.google.zxing.pdf417.detector; -import java.util.Hashtable; - import com.google.zxing.BlackPointEstimationMethod; import com.google.zxing.MonochromeBitmapSource; import com.google.zxing.ReaderException; @@ -27,527 +25,446 @@ import com.google.zxing.common.BitMatrix; import com.google.zxing.common.DetectorResult; import com.google.zxing.common.GridSampler; +import java.util.Hashtable; + /** *

* Encapsulates logic that can detect a PDF417 Code in an image, even if the * PDF417 Code is rotated or skewed, or partially obscured. *

- * + * * @author SITA Lab (kevin.osullivan@sita.aero) */ public final class Detector { - public static final boolean debug = false; - public static final int MAX_AVG_VARIANCE = (int) ((1 << 8) * 0.42f); - public static final int MAX_INDIVIDUAL_VARIANCE = (int) ((1 << 8) * 0.8f); - // B S B S B S B S Bar/Space pattern - private static final int[] START_PATTERN = { 8, 1, 1, 1, 1, 1, 1, 3 }; // 11111111 - // 0 1 - // 0 1 - // 0 1 - // 000 - // B S B S B S B S B Bar/Space pattern - private static final int[] STOP_PATTERN_REVERSE = { 1, 2, 1, 1, 1, 3, 1, 1, - 7 }; // 1111111 0 1 000 1 0 1 00 1 + public static final int MAX_AVG_VARIANCE = (int) ((1 << 8) * 0.42f); + public static final int MAX_INDIVIDUAL_VARIANCE = (int) ((1 << 8) * 0.8f); + // B S B S B S B S Bar/Space pattern + private static final int[] START_PATTERN = {8, 1, 1, 1, 1, 1, 1, 3}; // 11111111 + // 0 1 + // 0 1 + // 0 1 + // 000 - private final MonochromeBitmapSource image; + // B S B S B S B S B Bar/Space pattern + private static final int[] STOP_PATTERN_REVERSE = {1, 2, 1, 1, 1, 3, 1, 1, + 7}; // 1111111 0 1 000 1 0 1 00 1 - public Detector(MonochromeBitmapSource image) { - this.image = image; - } + private final MonochromeBitmapSource image; - /** - *

- * Detects a PDF417 Code in an image, simply. - *

- * - * @return {@link DetectorResult} encapsulating results of detecting a PDF417 - * Code - * @throws ReaderException - * if no QR Code can be found - */ - public DetectorResult detect() throws ReaderException { - return detect(null); - } + public Detector(MonochromeBitmapSource image) { + this.image = image; + } - /** - *

- * Detects a PDF417 Code in an image, simply. - *

- * - * @param hints - * optional hints to detector - * @return {@link DetectorResult} encapsulating results of detecting a PDF417 - * Code - * @throws ReaderException - * if no PDF417 Code can be found - */ - public DetectorResult detect(Hashtable hints) throws ReaderException { - if (!BlackPointEstimationMethod.TWO_D_SAMPLING.equals(image - .getLastEstimationMethod())) { - image.estimateBlackPoint(BlackPointEstimationMethod.TWO_D_SAMPLING, 0); - } - int width = image.getWidth(); - int height = image.getHeight(); - if (debug) - System.out.println("Width= " + width); - if (debug) - System.out.println("Height= " + height); + /** + *

+ * Detects a PDF417 Code in an image, simply. + *

+ * + * @return {@link DetectorResult} encapsulating results of detecting a PDF417 + * Code + * @throws ReaderException if no QR Code can be found + */ + public DetectorResult detect() throws ReaderException { + return detect(null); + } - long t2; - long t1 = System.currentTimeMillis(); - ResultPoint[] vertices = findVertices(image); - if (vertices == null) { // Couldn't find the vertices - // Maybe the image is rotated 180 degrees? - vertices = findVertices180(image); - /* - * // Don't need this because the PDF417 code won't fit into // the - * camera view finder when it is rotated. if (vertices == null) { // - * Couldn't find the vertices // Maybe the image is rotated 90 degrees? - * vertices = findVertices90(image); if (vertices == null) { // - * Couldn't find the vertices // Maybe the image is rotated 270 - * degrees? vertices = findVertices270(image); } } - */ - } - if (vertices != null) { - if (debug) { - t2 = System.currentTimeMillis(); - System.out.println("Elapsed time in ms - Find Vertices " - + (t2 - t1)); - } + /** + *

+ * Detects a PDF417 Code in an image, simply. + *

+ * + * @param hints optional hints to detector + * @return {@link DetectorResult} encapsulating results of detecting a PDF417 + * Code + * @throws ReaderException if no PDF417 Code can be found + */ + public DetectorResult detect(Hashtable hints) throws ReaderException { + if (!BlackPointEstimationMethod.TWO_D_SAMPLING.equals(image + .getLastEstimationMethod())) { + image.estimateBlackPoint(BlackPointEstimationMethod.TWO_D_SAMPLING, 0); + } - float moduleWidth = computeModuleWidth(vertices); - if (moduleWidth < 1.0f) { - if (debug) - System.out.println("Module Size is less than 1.0f=" - + moduleWidth); - throw ReaderException.getInstance(); - } - if (debug) - System.out.println("Module Size=" + moduleWidth); - - int dimension = computeDimension(vertices[4], vertices[6], - vertices[5], vertices[7], moduleWidth); - if (debug) - System.out.println("Dimension=" + dimension); - - // Deskew and sample image - t1 = System.currentTimeMillis(); - BitMatrix bits = sampleGrid(image, vertices[4], vertices[5], - vertices[6], vertices[7], dimension); - //bits.setModuleWidth(moduleWidth); - if (debug) { - t2 = System.currentTimeMillis(); - System.out - .println("Elapsed time in ms - Sampled Grid " + (t2 - t1)); - } - return new DetectorResult(bits, new ResultPoint[] { vertices[4], - vertices[5], vertices[6], vertices[7] }); - } else { - if (debug) { - System.out.println("Unable to locate vertices"); - } - throw ReaderException.getInstance(); - } - } - - /** - * Locate the vertices and the codewords area of a black blob using the Start - * and Stop patterns as locators. - * - * @param image - * the scanned barcode image. - * @return the an array containing the vertices. vertices[0] x, y top left - * barcode vertices[1] x, y bottom left barcode vertices[2] x, y top - * right barcode vertices[3] x, y bottom right barcode vertices[4] x, - * y top left codeword area vertices[5] x, y bottom left codeword - * area vertices[6] x, y top right codeword area vertices[7] x, y - * bottom right codeword area - */ - private ResultPoint[] findVertices(MonochromeBitmapSource image) { - int height = image.getHeight(); - int width = image.getWidth(); - - ResultPoint[] result = new ResultPoint[8]; - BitArray row = null; - boolean found = false; - - int[] loc = null; - // Top Left - for (int i = 0; i < height; i++) { - row = image.getBlackRow(i, null, 0, width / 4); - loc = findGuardPattern(row, 0, START_PATTERN); - if (loc != null) { - if (debug) - System.out.println("Found START pattern at X=" + loc[0] - + " End X=" + loc[1] + ", Y=" + i); - result[0] = new ResultPoint(loc[0], i); - result[4] = new ResultPoint(loc[1], i); - found = true; - break; - } - } - // Bottom left - if (found) { // Found the Top Left vertex - found = false; - for (int i = height - 1; i > 0; i--) { - row = image.getBlackRow(i, null, 0, width / 4); - loc = findGuardPattern(row, 0, START_PATTERN); - if (loc != null) { - if (debug) - System.out.println("Found START pattern at X=" + loc[0] - + " End X=" + loc[1] + ", Y=" + i); - result[1] = new ResultPoint(loc[0], i); - result[5] = new ResultPoint(loc[1], i); - found = true; - break; - } - } - } - // Top right - if (found) { // Found the Bottom Left vertex - found = false; - for (int i = 0; i < height; i++) { - row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); - row.reverse(); - loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); - if (loc != null) { - if (debug) - System.out.println("Found STOP pattern at X=" - + (width - loc[0]) + " End X=" + (width - loc[1]) - + ", Y=" + i); - result[2] = new ResultPoint(width - loc[0], i); - result[6] = new ResultPoint(width - loc[1], i); - found = true; - break; - } - } - } - // Bottom right - if (found) { // Found the Top right vertex - found = false; - for (int i = height - 1; i > 0; i--) { - row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); - row.reverse(); - loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); - if (loc != null) { - if (debug) - System.out.println("Found STOP pattern at X=" - + (width - loc[0]) + " End X=" + (width - loc[1]) - + ", Y=" + i); - result[3] = new ResultPoint(width - loc[0], i); - result[7] = new ResultPoint(width - loc[1], i); - found = true; - break; - } - } - } - if (found) { - return result; - } else { - return null; - } - } - - /** - * Locate the vertices and the codewords area of a black blob using the Start - * and Stop patterns as locators. This assumes that the image is rotated 180 - * degrees and if it locates the start and stop patterns at it will re-map - * the vertices for a 0 degree rotation. - * - * @param image - * the scanned barcode image. - * @return the an array containing the vertices. vertices[0] x, y top left - * barcode vertices[1] x, y bottom left barcode vertices[2] x, y top - * right barcode vertices[3] x, y bottom right barcode vertices[4] x, - * y top left codeword area vertices[5] x, y bottom left codeword - * area vertices[6] x, y top right codeword area vertices[7] x, y - * bottom right codeword area - */ - private ResultPoint[] findVertices180(MonochromeBitmapSource image) { - int height = image.getHeight(); - int width = image.getWidth(); - - ResultPoint[] result = new ResultPoint[8]; - BitArray row = null; - boolean found = false; - - int[] loc = null; - // Top Left - for (int i = height - 1; i > 0; i--) { - row = image.getBlackRow(i, null, 0, width / 4); - row.reverse(); - loc = findGuardPattern(row, 0, START_PATTERN); - if (loc != null) { - if (debug) - System.out.println("Found START pattern at X=" - + (width - loc[0]) + " End X=" + (width - loc[1]) + ", Y=" - + i); - result[0] = new ResultPoint(width - loc[0], i); - result[4] = new ResultPoint(width - loc[1], i); - found = true; - break; - } - } - // Bottom Left - if (found) { // Found the Top Left vertex - found = false; - for (int i = 0; i < height; i++) { - row = image.getBlackRow(i, null, 0, width / 4); - row.reverse(); - loc = findGuardPattern(row, 0, START_PATTERN); - if (loc != null) { - if (debug) - System.out.println("Found START pattern at X=" - + (width - loc[0]) + " End X=" + (width - loc[1]) - + ", Y=" + i); - result[1] = new ResultPoint(width - loc[0], i); - result[5] = new ResultPoint(width - loc[1], i); - found = true; - break; - } - } - } - // Top Right - if (found) { // Found the Bottom Left vertex - found = false; - for (int i = height - 1; i > 0; i--) { - row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); - loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); - if (loc != null) { - if (debug) - System.out.println("Found STOP pattern at X=" + loc[0] - + " End X=" + loc[1] + ", Y=" + i); - result[2] = new ResultPoint(loc[0], i); - result[6] = new ResultPoint(loc[1], i); - found = true; - break; - } - } - } - // Bottom Right - if (found) { // Found the Top Right vertex - found = false; - for (int i = 0; i < height; i++) { - row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); - loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); - if (loc != null) { - if (debug) - System.out.println("Found STOP pattern at X=" + loc[0] - + " End X=" + loc[1] + ", Y=" + i); - result[3] = new ResultPoint(loc[0], i); - result[7] = new ResultPoint(loc[1], i); - found = true; - break; - } - } - } - if (found) { - return result; - } else { - return null; - } - } - - /** - *

- * Estimates module size (pixels in a module) based on the Start and End - * finder patterns -- it uses - * {@link #sizeOfBlackWhiteBlackRun(int, int, int, int)} to figure the width - * of each. - * - * @param vertices - * [] vertices[0] x, y top left barcode vertices[1] x, y bottom - * left barcode vertices[2] x, y top right barcode vertices[3] x, y - * bottom right barcode vertices[4] x, y top left Codeword area - * vertices[5] x, y bottom left Codeword area vertices[6] x, y top - * right Codeword area vertices[7] x, y bottom right Codeword area - * @return the module size. - */ - private float computeModuleWidth(ResultPoint[] vertices) { - float pixels1 = ResultPoint.distance(vertices[0], vertices[4]); - float pixels2 = ResultPoint.distance(vertices[1], vertices[5]); - float moduleWidth1 = (pixels1 + pixels2) / (17 * 2.0f); - float pixels3 = ResultPoint.distance(vertices[6], vertices[2]); - float pixels4 = ResultPoint.distance(vertices[7], vertices[3]); - float moduleWidth2 = (pixels3 + pixels4) / (18 * 2.0f); - return (moduleWidth1 + moduleWidth2) / 2.0f; - } - - /** - * - * Computes the dimension (number of modules in a row) of the PDF417 Code - * based on vertices of the codeword area and estimated module size. - * - * @param topLeft - * of codeword area - * @param topRight - * of codeword area - * @param bottomLeft - * of codeword area - * @param bottomRight - * of codeword are - * @param moduleWidth - * estimated module size - * @return the number of modules in a row. - */ - private static int computeDimension(ResultPoint topLeft, - ResultPoint topRight, ResultPoint bottomLeft, ResultPoint bottomRight, - float moduleWidth) { - - int topRowDimension = round(ResultPoint - .distance(topLeft, topRight) - / moduleWidth); - int bottomRowDimension = round(ResultPoint.distance(bottomLeft, - bottomRight) - / moduleWidth); - int dimension = ((((topRowDimension + bottomRowDimension) >> 1) + 8) / 17) * 17; - return dimension; + ResultPoint[] vertices = findVertices(image); + if (vertices == null) { // Couldn't find the vertices + // Maybe the image is rotated 180 degrees? + vertices = findVertices180(image); /* - * int topRowDimension = round(ResultPoint.distance(topLeft, - * topRight)); //moduleWidth); int bottomRowDimension = - * round(ResultPoint.distance(bottomLeft, bottomRight)); // - * moduleWidth); int dimension = ((topRowDimension + bottomRowDimension) - * >> 1); // Round up to nearest 17 modules i.e. there are 17 modules per - * codeword //int dimension = ((((topRowDimension + bottomRowDimension) >> - * 1) + 8) / 17) * 17; return dimension; - */ - } - - private static BitMatrix sampleGrid(MonochromeBitmapSource image, - ResultPoint topLeft, ResultPoint bottomLeft, ResultPoint topRight, - ResultPoint bottomRight, int dimension) throws ReaderException { - - // Note that unlike in the QR Code sampler, we didn't find the center of - // modules, but the - // very corners. So there is no 0.5f here; 0.0f is right. - GridSampler sampler = GridSampler.getInstance(); - return sampler.sampleGrid(image, dimension, 0.0f, // p1ToX - 0.0f, // p1ToY - dimension, // p2ToX - 0.0f, // p2ToY - dimension, // p3ToX - dimension, // p3ToY - 0.0f, // p4ToX - dimension, // p4ToY - topLeft.getX(), // p1FromX - topLeft.getY(), // p1FromY - topRight.getX(), // p2FromX - topRight.getY(), // p2FromY - bottomRight.getX(), // p3FromX - bottomRight.getY(), // p3FromY - bottomLeft.getX(), // p4FromX - bottomLeft.getY()); // p4FromY - - } - - /** - * Ends up being a bit faster than Math.round(). This merely rounds its - * argument to the nearest int, where x.5 rounds up. - */ - private static int round(float d) { - return (int) (d + 0.5f); - } - - /** - * @param row - * row of black/white values to search - * @param rowOffset - * position to start search - * @param pattern - * pattern of counts of number of black and white pixels that are - * being searched for as a pattern - * @return start/end horizontal offset of guard pattern, as an array of two - * ints. - */ - int[] findGuardPattern(BitArray row, int rowOffset, int[] pattern) { - int patternLength = pattern.length; - int[] counters = new int[patternLength]; - int width = row.getSize(); - boolean isWhite = false; - - int counterPosition = 0; - int patternStart = rowOffset; - for (int x = rowOffset; x < width; x++) { - boolean pixel = row.get(x); - if ((!pixel && isWhite) || (pixel && !isWhite)) { - counters[counterPosition]++; - } else { - if (counterPosition == patternLength - 1) { - if (patternMatchVariance(counters, pattern, - MAX_INDIVIDUAL_VARIANCE) < MAX_AVG_VARIANCE) { - return new int[] { patternStart, x }; - } - patternStart += counters[0] + counters[1]; - for (int y = 2; y < patternLength; y++) { - counters[y - 2] = counters[y]; - } - counters[patternLength - 2] = 0; - counters[patternLength - 1] = 0; - counterPosition--; - } else { - counterPosition++; - } - counters[counterPosition] = 1; - isWhite = !isWhite; - } + * // Don't need this because the PDF417 code won't fit into // the + * camera view finder when it is rotated. if (vertices == null) { // + * Couldn't find the vertices // Maybe the image is rotated 90 degrees? + * vertices = findVertices90(image); if (vertices == null) { // + * Couldn't find the vertices // Maybe the image is rotated 270 + * degrees? vertices = findVertices270(image); } } + */ + } + if (vertices != null) { + float moduleWidth = computeModuleWidth(vertices); + if (moduleWidth < 1.0f) { + throw ReaderException.getInstance(); } + + int dimension = computeDimension(vertices[4], vertices[6], + vertices[5], vertices[7], moduleWidth); + + // Deskew and sample image + BitMatrix bits = sampleGrid(image, vertices[4], vertices[5], + vertices[6], vertices[7], dimension); + //bits.setModuleWidth(moduleWidth); + return new DetectorResult(bits, new ResultPoint[]{vertices[4], + vertices[5], vertices[6], vertices[7]}); + } else { + throw ReaderException.getInstance(); + } + } + + /** + * Locate the vertices and the codewords area of a black blob using the Start + * and Stop patterns as locators. + * + * @param image the scanned barcode image. + * @return the an array containing the vertices. vertices[0] x, y top left + * barcode vertices[1] x, y bottom left barcode vertices[2] x, y top + * right barcode vertices[3] x, y bottom right barcode vertices[4] x, + * y top left codeword area vertices[5] x, y bottom left codeword + * area vertices[6] x, y top right codeword area vertices[7] x, y + * bottom right codeword area + */ + private static ResultPoint[] findVertices(MonochromeBitmapSource image) { + int height = image.getHeight(); + int width = image.getWidth(); + + ResultPoint[] result = new ResultPoint[8]; + BitArray row = null; + boolean found = false; + + int[] loc = null; + // Top Left + for (int i = 0; i < height; i++) { + row = image.getBlackRow(i, null, 0, width / 4); + loc = findGuardPattern(row, 0, START_PATTERN); + if (loc != null) { + result[0] = new ResultPoint(loc[0], i); + result[4] = new ResultPoint(loc[1], i); + found = true; + break; + } + } + // Bottom left + if (found) { // Found the Top Left vertex + found = false; + for (int i = height - 1; i > 0; i--) { + row = image.getBlackRow(i, null, 0, width / 4); + loc = findGuardPattern(row, 0, START_PATTERN); + if (loc != null) { + result[1] = new ResultPoint(loc[0], i); + result[5] = new ResultPoint(loc[1], i); + found = true; + break; + } + } + } + // Top right + if (found) { // Found the Bottom Left vertex + found = false; + for (int i = 0; i < height; i++) { + row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); + row.reverse(); + loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); + if (loc != null) { + result[2] = new ResultPoint(width - loc[0], i); + result[6] = new ResultPoint(width - loc[1], i); + found = true; + break; + } + } + } + // Bottom right + if (found) { // Found the Top right vertex + found = false; + for (int i = height - 1; i > 0; i--) { + row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); + row.reverse(); + loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); + if (loc != null) { + result[3] = new ResultPoint(width - loc[0], i); + result[7] = new ResultPoint(width - loc[1], i); + found = true; + break; + } + } + } + return found ? result : null; + } + + /** + * Locate the vertices and the codewords area of a black blob using the Start + * and Stop patterns as locators. This assumes that the image is rotated 180 + * degrees and if it locates the start and stop patterns at it will re-map + * the vertices for a 0 degree rotation. + * + * @param image the scanned barcode image. + * @return the an array containing the vertices. vertices[0] x, y top left + * barcode vertices[1] x, y bottom left barcode vertices[2] x, y top + * right barcode vertices[3] x, y bottom right barcode vertices[4] x, + * y top left codeword area vertices[5] x, y bottom left codeword + * area vertices[6] x, y top right codeword area vertices[7] x, y + * bottom right codeword area + */ + private static ResultPoint[] findVertices180(MonochromeBitmapSource image) { + int height = image.getHeight(); + int width = image.getWidth(); + + ResultPoint[] result = new ResultPoint[8]; + BitArray row = null; + boolean found = false; + + int[] loc = null; + // Top Left + for (int i = height - 1; i > 0; i--) { + row = image.getBlackRow(i, null, 0, width / 4); + row.reverse(); + loc = findGuardPattern(row, 0, START_PATTERN); + if (loc != null) { + result[0] = new ResultPoint(width - loc[0], i); + result[4] = new ResultPoint(width - loc[1], i); + found = true; + break; + } + } + // Bottom Left + if (found) { // Found the Top Left vertex + found = false; + for (int i = 0; i < height; i++) { + row = image.getBlackRow(i, null, 0, width / 4); + row.reverse(); + loc = findGuardPattern(row, 0, START_PATTERN); + if (loc != null) { + result[1] = new ResultPoint(width - loc[0], i); + result[5] = new ResultPoint(width - loc[1], i); + found = true; + break; + } + } + } + // Top Right + if (found) { // Found the Bottom Left vertex + found = false; + for (int i = height - 1; i > 0; i--) { + row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); + loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); + if (loc != null) { + result[2] = new ResultPoint(loc[0], i); + result[6] = new ResultPoint(loc[1], i); + found = true; + break; + } + } + } + // Bottom Right + if (found) { // Found the Top Right vertex + found = false; + for (int i = 0; i < height; i++) { + row = image.getBlackRow(i, null, (width * 3) / 4, width / 4); + loc = findGuardPattern(row, 0, STOP_PATTERN_REVERSE); + if (loc != null) { + result[3] = new ResultPoint(loc[0], i); + result[7] = new ResultPoint(loc[1], i); + found = true; + break; + } + } + } + if (found) { + return result; + } else { return null; - } + } + } - /** - * Determines how closely a set of observed counts of runs of black/white - * values matches a given target pattern. This is reported as the ratio of - * the total variance from the expected pattern proportions across all - * pattern elements, to the length of the pattern. - * - * @param counters - * observed counters - * @param pattern - * expected pattern - * @param maxIndividualVariance - * The most any counter can differ before we give up - * @return ratio of total variance between counters and pattern compared to - * total pattern size, where the ratio has been multiplied by 256. - * So, 0 means no variance (perfect match); 256 means the total - * variance between counters and patterns equals the pattern length, - * higher values mean even more variance + /** + *

+ * Estimates module size (pixels in a module) based on the Start and End + * finder patterns.

+ * + * @param vertices [] vertices[0] x, y top left barcode vertices[1] x, y bottom + * left barcode vertices[2] x, y top right barcode vertices[3] x, y + * bottom right barcode vertices[4] x, y top left Codeword area + * vertices[5] x, y bottom left Codeword area vertices[6] x, y top + * right Codeword area vertices[7] x, y bottom right Codeword area + * @return the module size. + */ + private static float computeModuleWidth(ResultPoint[] vertices) { + float pixels1 = ResultPoint.distance(vertices[0], vertices[4]); + float pixels2 = ResultPoint.distance(vertices[1], vertices[5]); + float moduleWidth1 = (pixels1 + pixels2) / (17 * 2.0f); + float pixels3 = ResultPoint.distance(vertices[6], vertices[2]); + float pixels4 = ResultPoint.distance(vertices[7], vertices[3]); + float moduleWidth2 = (pixels3 + pixels4) / (18 * 2.0f); + return (moduleWidth1 + moduleWidth2) / 2.0f; + } + + /** + * Computes the dimension (number of modules in a row) of the PDF417 Code + * based on vertices of the codeword area and estimated module size. + * + * @param topLeft of codeword area + * @param topRight of codeword area + * @param bottomLeft of codeword area + * @param bottomRight of codeword are + * @param moduleWidth estimated module size + * @return the number of modules in a row. + */ + private static int computeDimension(ResultPoint topLeft, + ResultPoint topRight, ResultPoint bottomLeft, ResultPoint bottomRight, + float moduleWidth) { + + int topRowDimension = round(ResultPoint + .distance(topLeft, topRight) + / moduleWidth); + int bottomRowDimension = round(ResultPoint.distance(bottomLeft, + bottomRight) + / moduleWidth); + return ((((topRowDimension + bottomRowDimension) >> 1) + 8) / 17) * 17; + /* + * int topRowDimension = round(ResultPoint.distance(topLeft, + * topRight)); //moduleWidth); int bottomRowDimension = + * round(ResultPoint.distance(bottomLeft, bottomRight)); // + * moduleWidth); int dimension = ((topRowDimension + bottomRowDimension) + * >> 1); // Round up to nearest 17 modules i.e. there are 17 modules per + * codeword //int dimension = ((((topRowDimension + bottomRowDimension) >> + * 1) + 8) / 17) * 17; return dimension; */ - public static int patternMatchVariance(int[] counters, int[] pattern, - int maxIndividualVariance) { - int numCounters = counters.length; - int total = 0; - int patternLength = 0; - for (int i = 0; i < numCounters; i++) { - total += counters[i]; - patternLength += pattern[i]; - } - if (total < patternLength) { - // If we don't even have one pixel per unit of bar width, assume this - // is too small - // to reliably match, so fail: - return Integer.MAX_VALUE; - } - // We're going to fake floating-point math in integers. We just need to - // use more bits. - // Scale up patternLength so that intermediate values below like - // scaledCounter will have - // more "significant digits" - int unitBarWidth = (total << 8) / patternLength; - maxIndividualVariance = (maxIndividualVariance * unitBarWidth) >> 8; + } - int totalVariance = 0; - for (int x = 0; x < numCounters; x++) { - int counter = counters[x] << 8; - int scaledPattern = pattern[x] * unitBarWidth; - int variance = counter > scaledPattern ? counter - scaledPattern - : scaledPattern - counter; - if (variance > maxIndividualVariance) { - return Integer.MAX_VALUE; - } - totalVariance += variance; + private static BitMatrix sampleGrid(MonochromeBitmapSource image, + ResultPoint topLeft, ResultPoint bottomLeft, ResultPoint topRight, + ResultPoint bottomRight, int dimension) throws ReaderException { + + // Note that unlike in the QR Code sampler, we didn't find the center of + // modules, but the + // very corners. So there is no 0.5f here; 0.0f is right. + GridSampler sampler = GridSampler.getInstance(); + return sampler.sampleGrid(image, dimension, 0.0f, // p1ToX + 0.0f, // p1ToY + dimension, // p2ToX + 0.0f, // p2ToY + dimension, // p3ToX + dimension, // p3ToY + 0.0f, // p4ToX + dimension, // p4ToY + topLeft.getX(), // p1FromX + topLeft.getY(), // p1FromY + topRight.getX(), // p2FromX + topRight.getY(), // p2FromY + bottomRight.getX(), // p3FromX + bottomRight.getY(), // p3FromY + bottomLeft.getX(), // p4FromX + bottomLeft.getY()); // p4FromY + + } + + /** + * Ends up being a bit faster than Math.round(). This merely rounds its + * argument to the nearest int, where x.5 rounds up. + */ + private static int round(float d) { + return (int) (d + 0.5f); + } + + /** + * @param row row of black/white values to search + * @param rowOffset position to start search + * @param pattern pattern of counts of number of black and white pixels that are + * being searched for as a pattern + * @return start/end horizontal offset of guard pattern, as an array of two + * ints. + */ + static int[] findGuardPattern(BitArray row, int rowOffset, int[] pattern) { + int patternLength = pattern.length; + int[] counters = new int[patternLength]; + int width = row.getSize(); + boolean isWhite = false; + + int counterPosition = 0; + int patternStart = rowOffset; + for (int x = rowOffset; x < width; x++) { + boolean pixel = row.get(x); + if (pixel ^ isWhite) { + counters[counterPosition]++; + } else { + if (counterPosition == patternLength - 1) { + if (patternMatchVariance(counters, pattern, + MAX_INDIVIDUAL_VARIANCE) < MAX_AVG_VARIANCE) { + return new int[]{patternStart, x}; + } + patternStart += counters[0] + counters[1]; + for (int y = 2; y < patternLength; y++) { + counters[y - 2] = counters[y]; + } + counters[patternLength - 2] = 0; + counters[patternLength - 1] = 0; + counterPosition--; + } else { + counterPosition++; + } + counters[counterPosition] = 1; + isWhite = !isWhite; } - return totalVariance / total; - } + } + return null; + } + + /** + * Determines how closely a set of observed counts of runs of black/white + * values matches a given target pattern. This is reported as the ratio of + * the total variance from the expected pattern proportions across all + * pattern elements, to the length of the pattern. + * + * @param counters observed counters + * @param pattern expected pattern + * @param maxIndividualVariance The most any counter can differ before we give up + * @return ratio of total variance between counters and pattern compared to + * total pattern size, where the ratio has been multiplied by 256. + * So, 0 means no variance (perfect match); 256 means the total + * variance between counters and patterns equals the pattern length, + * higher values mean even more variance + */ + public static int patternMatchVariance(int[] counters, int[] pattern, + int maxIndividualVariance) { + int numCounters = counters.length; + int total = 0; + int patternLength = 0; + for (int i = 0; i < numCounters; i++) { + total += counters[i]; + patternLength += pattern[i]; + } + if (total < patternLength) { + // If we don't even have one pixel per unit of bar width, assume this + // is too small + // to reliably match, so fail: + return Integer.MAX_VALUE; + } + // We're going to fake floating-point math in integers. We just need to + // use more bits. + // Scale up patternLength so that intermediate values below like + // scaledCounter will have + // more "significant digits" + int unitBarWidth = (total << 8) / patternLength; + maxIndividualVariance = (maxIndividualVariance * unitBarWidth) >> 8; + + int totalVariance = 0; + for (int x = 0; x < numCounters; x++) { + int counter = counters[x] << 8; + int scaledPattern = pattern[x] * unitBarWidth; + int variance = counter > scaledPattern ? counter - scaledPattern + : scaledPattern - counter; + if (variance > maxIndividualVariance) { + return Integer.MAX_VALUE; + } + totalVariance += variance; + } + return totalVariance / total; + } } diff --git a/core/test/src/com/google/zxing/pdf417/PDF417BlackBox1TestCase.java b/core/test/src/com/google/zxing/pdf417/PDF417BlackBox1TestCase.java index 4de9d9ec6..d7cbbaff4 100644 --- a/core/test/src/com/google/zxing/pdf417/PDF417BlackBox1TestCase.java +++ b/core/test/src/com/google/zxing/pdf417/PDF417BlackBox1TestCase.java @@ -37,12 +37,12 @@ public final class PDF417BlackBox1TestCase extends AbstractBlackBoxTestCase { //addTest(1, 1, 270.0f); } + @Override protected Hashtable getHints() { - Hashtable table = new Hashtable(); - Vector v = new Vector(); + Hashtable table = new Hashtable(3); + Vector v = new Vector(1); v.add(BarcodeFormat.PDF417); table.put(DecodeHintType.POSSIBLE_FORMATS, v); - return table; }