public static SymbolInfo lookup(int dataCodewords, SymbolShapeHint shape, Dimension minSize, Dimension maxSize, boolean fail) { for (SymbolInfo symbol : symbols) { if ((shape != SymbolShapeHint.FORCE_SQUARE || !symbol.rectangular) && ((shape != SymbolShapeHint.FORCE_RECTANGLE || symbol.rectangular) && ((minSize == null || (symbol.getSymbolWidth() >= minSize.getWidth() && symbol.getSymbolHeight() >= minSize.getHeight())) && ((maxSize == null || (symbol.getSymbolWidth() <= maxSize.getWidth() && symbol.getSymbolHeight() <= maxSize.getHeight())) && dataCodewords <= symbol.dataCapacity)))) { return symbol; } } if (!fail) { return null; } throw new IllegalArgumentException("Can't find a symbol arrangement that matches the " + "message. Data codewords: " + dataCodewords); }
public static SymbolInfo lookup(int dataCodewords, SymbolShapeHint shape, Dimension minSize, Dimension maxSize, boolean fail) { for (SymbolInfo symbol : symbols) { if (shape == SymbolShapeHint.FORCE_SQUARE && symbol.rectangular) { continue; } if (shape == SymbolShapeHint.FORCE_RECTANGLE && !symbol.rectangular) { continue; } if (minSize != null && (symbol.getSymbolWidth() < minSize.getWidth() || symbol.getSymbolHeight() < minSize.getHeight())) { continue; } if (maxSize != null && (symbol.getSymbolWidth() > maxSize.getWidth() || symbol.getSymbolHeight() > maxSize.getHeight())) { continue; } if (dataCodewords <= symbol.dataCapacity) { return symbol; } } if (fail) { throw new IllegalArgumentException( "Can't find a symbol arrangement that matches the message. Data codewords: " + dataCodewords); } return null; }
public static String encodeHighLevel(String msg, SymbolShapeHint shape, Dimension minSize, Dimension maxSize) { Encoder[] encoders = new Encoder[]{new ASCIIEncoder(), new C40Encoder(), new TextEncoder (), new X12Encoder(), new EdifactEncoder(), new Base256Encoder()}; EncoderContext context = new EncoderContext(msg); context.setSymbolShape(shape); context.setSizeConstraints(minSize, maxSize); if (msg.startsWith(MACRO_05_HEADER) && msg.endsWith(MACRO_TRAILER)) { context.writeCodeword(MACRO_05); context.setSkipAtEnd(2); context.pos += MACRO_05_HEADER.length(); } else if (msg.startsWith(MACRO_06_HEADER) && msg.endsWith(MACRO_TRAILER)) { context.writeCodeword(MACRO_06); context.setSkipAtEnd(2); context.pos += MACRO_06_HEADER.length(); } int encodingMode = 0; while (context.hasMoreCharacters()) { encoders[encodingMode].encode(context); if (context.getNewEncoding() >= 0) { encodingMode = context.getNewEncoding(); context.resetEncoderSignal(); } } int len = context.getCodewordCount(); context.updateSymbolInfo(); int capacity = context.getSymbolInfo().getDataCapacity(); if (!(len >= capacity || encodingMode == 0 || encodingMode == 5)) { context.writeCodeword('þ'); } StringBuilder codewords = context.getCodewords(); if (codewords.length() < capacity) { codewords.append(PAD); } while (codewords.length() < capacity) { codewords.append(randomize253State(PAD, codewords.length() + 1)); } return context.getCodewords().toString(); }
public BitMatrix encode(String contents, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) { if (contents.isEmpty()) { throw new IllegalArgumentException("Found empty contents"); } else if (format != BarcodeFormat.DATA_MATRIX) { throw new IllegalArgumentException("Can only encode DATA_MATRIX, but got " + format); } else if (width < 0 || height < 0) { throw new IllegalArgumentException("Requested dimensions are too small: " + width + 'x' + height); } else { SymbolShapeHint shape = SymbolShapeHint.FORCE_NONE; Dimension minSize = null; Dimension maxSize = null; if (hints != null) { SymbolShapeHint requestedShape = (SymbolShapeHint) hints.get(EncodeHintType .DATA_MATRIX_SHAPE); if (requestedShape != null) { shape = requestedShape; } Dimension requestedMinSize = (Dimension) hints.get(EncodeHintType.MIN_SIZE); if (requestedMinSize != null) { minSize = requestedMinSize; } Dimension requestedMaxSize = (Dimension) hints.get(EncodeHintType.MAX_SIZE); if (requestedMaxSize != null) { maxSize = requestedMaxSize; } } String encoded = HighLevelEncoder.encodeHighLevel(contents, shape, minSize, maxSize); SymbolInfo symbolInfo = SymbolInfo.lookup(encoded.length(), shape, minSize, maxSize, true); DefaultPlacement placement = new DefaultPlacement(ErrorCorrection.encodeECC200 (encoded, symbolInfo), symbolInfo.getSymbolDataWidth(), symbolInfo .getSymbolDataHeight()); placement.place(); return encodeLowLevel(placement, symbolInfo); } }
@Override public BitMatrix encode(String contents, BarcodeFormat format, int width, int height, Map<EncodeHintType,?> hints) { if (contents.isEmpty()) { throw new IllegalArgumentException("Found empty contents"); } if (format != BarcodeFormat.DATA_MATRIX) { throw new IllegalArgumentException("Can only encode DATA_MATRIX, but got " + format); } if (width < 0 || height < 0) { throw new IllegalArgumentException("Requested dimensions are too small: " + width + 'x' + height); } // Try to get force shape & min / max size SymbolShapeHint shape = SymbolShapeHint.FORCE_NONE; Dimension minSize = null; Dimension maxSize = null; if (hints != null) { SymbolShapeHint requestedShape = (SymbolShapeHint) hints.get(EncodeHintType.DATA_MATRIX_SHAPE); if (requestedShape != null) { shape = requestedShape; } Dimension requestedMinSize = (Dimension) hints.get(EncodeHintType.MIN_SIZE); if (requestedMinSize != null) { minSize = requestedMinSize; } Dimension requestedMaxSize = (Dimension) hints.get(EncodeHintType.MAX_SIZE); if (requestedMaxSize != null) { maxSize = requestedMaxSize; } } //1. step: Data encodation String encoded = HighLevelEncoder.encodeHighLevel(contents, shape, minSize, maxSize); SymbolInfo symbolInfo = SymbolInfo.lookup(encoded.length(), shape, minSize, maxSize, true); //2. step: ECC generation String codewords = ErrorCorrection.encodeECC200(encoded, symbolInfo); //3. step: Module placement in Matrix DefaultPlacement placement = new DefaultPlacement(codewords, symbolInfo.getSymbolDataWidth(), symbolInfo.getSymbolDataHeight()); placement.place(); //4. step: low-level encoding return encodeLowLevel(placement, symbolInfo); }
/** * Performs message encoding of a DataMatrix message using the algorithm described in annex P * of ISO/IEC 16022:2000(E). * * @param msg the message * @param shape requested shape. May be {@code SymbolShapeHint.FORCE_NONE}, * {@code SymbolShapeHint.FORCE_SQUARE} or {@code SymbolShapeHint.FORCE_RECTANGLE}. * @param minSize the minimum symbol size constraint or null for no constraint * @param maxSize the maximum symbol size constraint or null for no constraint * @return the encoded message (the char values range from 0 to 255) */ public static String encodeHighLevel(String msg, SymbolShapeHint shape, Dimension minSize, Dimension maxSize) { //the codewords 0..255 are encoded as Unicode characters Encoder[] encoders = { new ASCIIEncoder(), new C40Encoder(), new TextEncoder(), new X12Encoder(), new EdifactEncoder(), new Base256Encoder() }; EncoderContext context = new EncoderContext(msg); context.setSymbolShape(shape); context.setSizeConstraints(minSize, maxSize); if (msg.startsWith(MACRO_05_HEADER) && msg.endsWith(MACRO_TRAILER)) { context.writeCodeword(MACRO_05); context.setSkipAtEnd(2); context.pos += MACRO_05_HEADER.length(); } else if (msg.startsWith(MACRO_06_HEADER) && msg.endsWith(MACRO_TRAILER)) { context.writeCodeword(MACRO_06); context.setSkipAtEnd(2); context.pos += MACRO_06_HEADER.length(); } int encodingMode = ASCII_ENCODATION; //Default mode while (context.hasMoreCharacters()) { encoders[encodingMode].encode(context); if (context.getNewEncoding() >= 0) { encodingMode = context.getNewEncoding(); context.resetEncoderSignal(); } } int len = context.getCodewordCount(); context.updateSymbolInfo(); int capacity = context.getSymbolInfo().getDataCapacity(); if (len < capacity) { if (encodingMode != ASCII_ENCODATION && encodingMode != BASE256_ENCODATION) { context.writeCodeword('\u00fe'); //Unlatch (254) } } //Padding StringBuilder codewords = context.getCodewords(); if (codewords.length() < capacity) { codewords.append(PAD); } while (codewords.length() < capacity) { codewords.append(randomize253State(PAD, codewords.length() + 1)); } return context.getCodewords().toString(); }
public void setSizeConstraints(Dimension minSize, Dimension maxSize) { this.minSize = minSize; this.maxSize = maxSize; }
@Override public BitMatrix encode(String contents, BarcodeFormat format, int width, int height, Map<EncodeHintType,?> hints) { if (contents.isEmpty()) { throw new IllegalArgumentException("Found empty contents"); } if (format != BarcodeFormat.DATA_MATRIX) { throw new IllegalArgumentException("Can only encode DATA_MATRIX, but got " + format); } if (width < 0 || height < 0) { throw new IllegalArgumentException("Requested dimensions are too small: " + width + 'x' + height); } // Try to get force shape & min / max size SymbolShapeHint shape = SymbolShapeHint.FORCE_NONE; Dimension minSize = null; Dimension maxSize = null; if (hints != null) { SymbolShapeHint requestedShape = (SymbolShapeHint) hints.get(EncodeHintType.DATA_MATRIX_SHAPE); if (requestedShape != null) { shape = requestedShape; } @SuppressWarnings("deprecation") Dimension requestedMinSize = (Dimension) hints.get(EncodeHintType.MIN_SIZE); if (requestedMinSize != null) { minSize = requestedMinSize; } @SuppressWarnings("deprecation") Dimension requestedMaxSize = (Dimension) hints.get(EncodeHintType.MAX_SIZE); if (requestedMaxSize != null) { maxSize = requestedMaxSize; } } //1. step: Data encodation String encoded = HighLevelEncoder.encodeHighLevel(contents, shape, minSize, maxSize); SymbolInfo symbolInfo = SymbolInfo.lookup(encoded.length(), shape, minSize, maxSize, true); //2. step: ECC generation String codewords = ErrorCorrection.encodeECC200(encoded, symbolInfo); //3. step: Module placement in Matrix DefaultPlacement placement = new DefaultPlacement(codewords, symbolInfo.getSymbolDataWidth(), symbolInfo.getSymbolDataHeight()); placement.place(); //4. step: low-level encoding return encodeLowLevel(placement, symbolInfo); }
