Examples with BitMatrix com.google.zxing.common.BitMatrix used on opensource projects

Example 26 with BitMatrix

use of com.google.zxing.common.BitMatrix in project zxing by zxing.

the class DataMaskTestCase method testMask.

private static void testMask(DataMask mask, int dimension, MaskCondition condition) {
    BitMatrix bits = new BitMatrix(dimension);
    mask.unmaskBitMatrix(bits, dimension);
    for (int i = 0; i < dimension; i++) {
        for (int j = 0; j < dimension; j++) {
            assertEquals("(" + i + ',' + j + ')', condition.isMasked(i, j), bits.get(j, i));
        }
    }
}

Example 27 with BitMatrix

use of com.google.zxing.common.BitMatrix in project zxing by zxing.

the class EncoderTest method testEncode.

// Helper routines
private static void testEncode(String data, boolean compact, int layers, String expected) throws Exception {
    AztecCode aztec = Encoder.encode(data.getBytes(StandardCharsets.ISO_8859_1), 33, Encoder.DEFAULT_AZTEC_LAYERS);
    assertEquals("Unexpected symbol format (compact)", compact, aztec.isCompact());
    assertEquals("Unexpected nr. of layers", layers, aztec.getLayers());
    BitMatrix matrix = aztec.getMatrix();
    assertEquals("encode() failed", expected, matrix.toString());
}

Example 28 with BitMatrix

use of com.google.zxing.common.BitMatrix in project zxing by zxing.

the class EncoderTest method testWriter.

private static void testWriter(String data, String charset, int eccPercent, boolean compact, int layers) throws FormatException {
    // 1. Perform an encode-decode round-trip because it can be lossy.
    // 2. Aztec Decoder currently always decodes the data with a LATIN-1 charset:
    String expectedData = new String(data.getBytes(Charset.forName(charset)), StandardCharsets.ISO_8859_1);
    Map<EncodeHintType, Object> hints = new EnumMap<>(EncodeHintType.class);
    hints.put(EncodeHintType.CHARACTER_SET, charset);
    hints.put(EncodeHintType.ERROR_CORRECTION, eccPercent);
    AztecWriter writer = new AztecWriter();
    BitMatrix matrix = writer.encode(data, BarcodeFormat.AZTEC, 0, 0, hints);
    AztecCode aztec = Encoder.encode(data.getBytes(Charset.forName(charset)), eccPercent, Encoder.DEFAULT_AZTEC_LAYERS);
    assertEquals("Unexpected symbol format (compact)", compact, aztec.isCompact());
    assertEquals("Unexpected nr. of layers", layers, aztec.getLayers());
    BitMatrix matrix2 = aztec.getMatrix();
    assertEquals(matrix, matrix2);
    AztecDetectorResult r = new AztecDetectorResult(matrix, NO_POINTS, aztec.isCompact(), aztec.getCodeWords(), aztec.getLayers());
    DecoderResult res = new Decoder().decode(r);
    assertEquals(expectedData, res.getText());
    // Check error correction by introducing up to eccPercent/2 errors
    int ecWords = aztec.getCodeWords() * eccPercent / 100 / 2;
    Random random = getPseudoRandom();
    for (int i = 0; i < ecWords; i++) {
        // don't touch the core
        int x = random.nextBoolean() ? random.nextInt(aztec.getLayers() * 2) : matrix.getWidth() - 1 - random.nextInt(aztec.getLayers() * 2);
        int y = random.nextBoolean() ? random.nextInt(aztec.getLayers() * 2) : matrix.getHeight() - 1 - random.nextInt(aztec.getLayers() * 2);
        matrix.flip(x, y);
    }
    r = new AztecDetectorResult(matrix, NO_POINTS, aztec.isCompact(), aztec.getCodeWords(), aztec.getLayers());
    res = new Decoder().decode(r);
    assertEquals(expectedData, res.getText());
}

Example 29 with BitMatrix

use of com.google.zxing.common.BitMatrix in project zxing by zxing.

the class EncoderTest method testAztecWriter.

@Test
public void testAztecWriter() throws Exception {
    for (int i = 0; i < 1000; i++) {
        testWriter("€ 1 sample data.", "ISO-8859-1", 25, true, 2);
        testWriter("€ 1 sample data.", "ISO-8859-15", 25, true, 2);
        testWriter("€ 1 sample data.", "UTF-8", 25, true, 2);
        testWriter("€ 1 sample data.", "UTF-8", 100, true, 3);
        testWriter("€ 1 sample data.", "UTF-8", 300, true, 4);
        testWriter("€ 1 sample data.", "UTF-8", 500, false, 5);
        // Test AztecWriter defaults
        String data = "In ut magna vel mauris malesuada";
        AztecWriter writer = new AztecWriter();
        BitMatrix matrix = writer.encode(data, BarcodeFormat.AZTEC, 0, 0);
        AztecCode aztec = Encoder.encode(data.getBytes(StandardCharsets.ISO_8859_1), Encoder.DEFAULT_EC_PERCENT, Encoder.DEFAULT_AZTEC_LAYERS);
        BitMatrix expectedMatrix = aztec.getMatrix();
        assertEquals(matrix, expectedMatrix);
    }
}

Example 30 with BitMatrix

use of com.google.zxing.common.BitMatrix in project zxing by zxing.

the class QRCodeWriter method renderResult.

// Note that the input matrix uses 0 == white, 1 == black, while the output matrix uses
// 0 == black, 255 == white (i.e. an 8 bit greyscale bitmap).
private static BitMatrix renderResult(QRCode code, int width, int height, int quietZone) {
    ByteMatrix input = code.getMatrix();
    if (input == null) {
        throw new IllegalStateException();
    }
    int inputWidth = input.getWidth();
    int inputHeight = input.getHeight();
    int qrWidth = inputWidth + (quietZone * 2);
    int qrHeight = inputHeight + (quietZone * 2);
    int outputWidth = Math.max(width, qrWidth);
    int outputHeight = Math.max(height, qrHeight);
    int multiple = Math.min(outputWidth / qrWidth, outputHeight / qrHeight);
    // Padding includes both the quiet zone and the extra white pixels to accommodate the requested
    // dimensions. For example, if input is 25x25 the QR will be 33x33 including the quiet zone.
    // If the requested size is 200x160, the multiple will be 4, for a QR of 132x132. These will
    // handle all the padding from 100x100 (the actual QR) up to 200x160.
    int leftPadding = (outputWidth - (inputWidth * multiple)) / 2;
    int topPadding = (outputHeight - (inputHeight * multiple)) / 2;
    BitMatrix output = new BitMatrix(outputWidth, outputHeight);
    for (int inputY = 0, outputY = topPadding; inputY < inputHeight; inputY++, outputY += multiple) {
        // Write the contents of this row of the barcode
        for (int inputX = 0, outputX = leftPadding; inputX < inputWidth; inputX++, outputX += multiple) {
            if (input.get(inputX, inputY) == 1) {
                output.setRegion(outputX, outputY, multiple, multiple);
            }
        }
    }
    return output;
}