Examples with COSDictionary com.tom_roush.pdfbox.cos.COSDictionary used on opensource projects

Example 51 with COSDictionary

use of com.tom_roush.pdfbox.cos.COSDictionary in project PdfBox-Android by TomRoush.

the class PDInlineImageTest method testInlineImage.

/**
 * Tests PDInlineImage#PDInlineImage(COSDictionary parameters, byte[] data,
 * Map<String, PDColorSpace> colorSpaces)
 */
@Test
public void testInlineImage() throws IOException {
    COSDictionary dict = new COSDictionary();
    dict.setBoolean(COSName.IM, true);
    int width = 31;
    int height = 27;
    dict.setInt(COSName.W, width);
    dict.setInt(COSName.H, height);
    dict.setInt(COSName.BPC, 1);
    int rowbytes = width / 8;
    if (rowbytes * 8 < width) {
        // PDF spec:
        // If the number of data bits per row is not a multiple of 8,
        // the end of the row is padded with extra bits to fill out the last byte.
        ++rowbytes;
    }
    // draw a grid
    int datalen = rowbytes * height;
    byte[] data = new byte[datalen];
    for (int i = 0; i < datalen; ++i) {
        data[i] = (i / 4 % 2 == 0) ? (byte) Integer.parseInt("10101010", 2) : 0;
    }
    PDInlineImage inlineImage1 = new PDInlineImage(dict, data, null);
    assertTrue(inlineImage1.isStencil());
    assertEquals(width, inlineImage1.getWidth());
    assertEquals(height, inlineImage1.getHeight());
    assertEquals(1, inlineImage1.getBitsPerComponent());
    COSDictionary dict2 = new COSDictionary();
    dict2.addAll(dict);
    // use decode array to revert in image2
    COSArray decodeArray = new COSArray();
    decodeArray.add(COSInteger.ONE);
    decodeArray.add(COSInteger.ZERO);
    dict2.setItem(COSName.DECODE, decodeArray);
    PDInlineImage inlineImage2 = new PDInlineImage(dict2, data, null);
    Paint paint = new Paint();
    paint.setColor(Color.BLACK);
    Bitmap stencilImage = inlineImage1.getStencilImage(paint);
    assertEquals(width, stencilImage.getWidth());
    assertEquals(height, stencilImage.getHeight());
    Bitmap stencilImage2 = inlineImage2.getStencilImage(paint);
    assertEquals(width, stencilImage2.getWidth());
    assertEquals(height, stencilImage2.getHeight());
    Bitmap image1 = inlineImage1.getImage();
    assertEquals(width, image1.getWidth());
    assertEquals(height, image1.getHeight());
    Bitmap image2 = inlineImage2.getImage();
    assertEquals(width, image2.getWidth());
    assertEquals(height, image2.getHeight());
    // write and read
    boolean writeOk = image1.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(testResultsDir.getPath() + "/inline-grid1.png"));
    assertTrue(writeOk);
    Bitmap bim1 = BitmapFactory.decodeFile(new File(testResultsDir + "/inline-grid1.png").getPath());
    assertNotNull(bim1);
    assertEquals(width, bim1.getWidth());
    assertEquals(height, bim1.getHeight());
    writeOk = image2.compress(Bitmap.CompressFormat.PNG, 100, new FileOutputStream(testResultsDir.getPath() + "/inline-grid2.png"));
    assertTrue(writeOk);
    Bitmap bim2 = BitmapFactory.decodeFile(new File(testResultsDir + "/inline-grid2.png").getPath());
    assertNotNull(bim2);
    assertEquals(width, bim2.getWidth());
    assertEquals(height, bim2.getHeight());
    // compare: pixels with even coordinates are white (FF), all others are black (0)
    int[] bimPixels = new int[width * height];
    bim1.getPixels(bimPixels, 0, width, 0, 0, width, height);
    for (int x = 0; x < width; ++x) {
        for (int y = 0; y < height; ++y) {
            if (x % 2 == 0 && y % 2 == 0) {
                assertEquals(0xFFFFFF, bimPixels[x + width * y] & 0xFFFFFF);
            } else {
                assertEquals(0, bimPixels[x + width * y] & 0xFFFFFF);
            }
        }
    }
    // compare: pixels with odd coordinates are white (FF), all others are black (0)
    bim2.getPixels(bimPixels, 0, width, 0, 0, width, height);
    for (int x = 0; x < width; ++x) {
        for (int y = 0; y < height; ++y) {
            if (x % 2 == 0 && y % 2 == 0) {
                assertEquals(0, bimPixels[x + width * y] & 0xFFFFFF);
            } else {
                assertEquals(0xFFFFFF, bimPixels[x + width * y] & 0xFFFFFF);
            }
        }
    }
    PDDocument document = new PDDocument();
    PDPage page = new PDPage();
    document.addPage(page);
    PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, false);
    contentStream.drawImage(inlineImage1, 150, 400);
    contentStream.drawImage(inlineImage1, 150, 500, inlineImage1.getWidth() * 2, inlineImage1.getHeight() * 2);
    contentStream.drawImage(inlineImage1, 150, 600, inlineImage1.getWidth() * 4, inlineImage1.getHeight() * 4);
    contentStream.drawImage(inlineImage2, 350, 400);
    contentStream.drawImage(inlineImage2, 350, 500, inlineImage2.getWidth() * 2, inlineImage2.getHeight() * 2);
    contentStream.drawImage(inlineImage2, 350, 600, inlineImage2.getWidth() * 4, inlineImage2.getHeight() * 4);
    contentStream.close();
    File pdfFile = new File(testResultsDir, "inline.pdf");
    document.save(pdfFile);
    document.close();
    document = PDDocument.load(pdfFile, (String) null);
    new PDFRenderer(document).renderImage(0);
    document.close();
}

Example 52 with COSDictionary

use of com.tom_roush.pdfbox.cos.COSDictionary in project PdfBox-Android by TomRoush.

the class Filter method getDecodeParams.

// gets the decode params for a specific filter index, this is used to
// normalise the DecodeParams entry so that it is always a dictionary
protected COSDictionary getDecodeParams(COSDictionary dictionary, int index) {
    COSBase filter = dictionary.getDictionaryObject(COSName.FILTER, COSName.F);
    COSBase obj = dictionary.getDictionaryObject(COSName.DECODE_PARMS, COSName.DP);
    if (filter instanceof COSName && obj instanceof COSDictionary) {
        // but tests show that Adobe means "one filter name object".
        return (COSDictionary) obj;
    } else if (filter instanceof COSArray && obj instanceof COSArray) {
        COSArray array = (COSArray) obj;
        if (index < array.size()) {
            COSBase objAtIndex = array.getObject(index);
            if (objAtIndex instanceof COSDictionary) {
                return (COSDictionary) array.getObject(index);
            }
        }
    } else if (obj != null && !(filter instanceof COSArray || obj instanceof COSArray)) {
        Log.e("PdfBox-Android", "Expected DecodeParams to be an Array or Dictionary but found " + obj.getClass().getName());
    }
    return new COSDictionary();
}

Example 53 with COSDictionary

use of com.tom_roush.pdfbox.cos.COSDictionary in project PdfBox-Android by TomRoush.

the class LZWFilter method decode.

// BEWARE: codeTable must be local to each method, because there is only
// one instance of each filter
/**
 * {@inheritDoc}
 */
@Override
public DecodeResult decode(InputStream encoded, OutputStream decoded, COSDictionary parameters, int index) throws IOException {
    COSDictionary decodeParams = getDecodeParams(parameters, index);
    int earlyChange = decodeParams.getInt(COSName.EARLY_CHANGE, 1);
    if (earlyChange != 0 && earlyChange != 1) {
        earlyChange = 1;
    }
    doLZWDecode(encoded, Predictor.wrapPredictor(decoded, decodeParams), earlyChange);
    return new DecodeResult(parameters);
}

Example 54 with COSDictionary

use of com.tom_roush.pdfbox.cos.COSDictionary in project PdfBox-Android by TomRoush.

the class CCITTFaxFilter method decode.

@Override
public DecodeResult decode(InputStream encoded, OutputStream decoded, COSDictionary parameters, int index) throws IOException {
    // get decode parameters
    COSDictionary decodeParms = getDecodeParams(parameters, index);
    // parse dimensions
    int cols = decodeParms.getInt(COSName.COLUMNS, 1728);
    int rows = decodeParms.getInt(COSName.ROWS, 0);
    int height = parameters.getInt(COSName.HEIGHT, COSName.H, 0);
    if (rows > 0 && height > 0) {
        // PDFBOX-771, PDFBOX-3727: rows in DecodeParms sometimes contains an incorrect value
        rows = height;
    } else {
        // at least one of the values has to have a valid value
        rows = Math.max(rows, height);
    }
    // decompress data
    int k = decodeParms.getInt(COSName.K, 0);
    boolean encodedByteAlign = decodeParms.getBoolean(COSName.ENCODED_BYTE_ALIGN, false);
    int arraySize = (cols + 7) / 8 * rows;
    // TODO possible options??
    byte[] decompressed = new byte[arraySize];
    CCITTFaxDecoderStream s;
    int type;
    long tiffOptions;
    if (k == 0) {
        tiffOptions = encodedByteAlign ? TIFFExtension.GROUP3OPT_BYTEALIGNED : 0;
        type = TIFFExtension.COMPRESSION_CCITT_MODIFIED_HUFFMAN_RLE;
    } else {
        if (k > 0) {
            tiffOptions = encodedByteAlign ? TIFFExtension.GROUP3OPT_BYTEALIGNED : 0;
            tiffOptions |= TIFFExtension.GROUP3OPT_2DENCODING;
            type = TIFFExtension.COMPRESSION_CCITT_T4;
        } else {
            // k < 0
            tiffOptions = encodedByteAlign ? TIFFExtension.GROUP4OPT_BYTEALIGNED : 0;
            type = TIFFExtension.COMPRESSION_CCITT_T6;
        }
    }
    s = new CCITTFaxDecoderStream(encoded, cols, type, TIFFExtension.FILL_LEFT_TO_RIGHT, tiffOptions);
    readFromDecoderStream(s, decompressed);
    // invert bitmap
    boolean blackIsOne = decodeParms.getBoolean(COSName.BLACK_IS_1, false);
    if (!blackIsOne) {
        // Inverting the bitmap
        // Note the previous approach with starting from an IndexColorModel didn't work
        // reliably. In some cases the image wouldn't be painted for some reason.
        // So a safe but slower approach was taken.
        invertBitmap(decompressed);
    }
    decoded.write(decompressed);
    return new DecodeResult(parameters);
}

Example 55 with COSDictionary

use of com.tom_roush.pdfbox.cos.COSDictionary in project PdfBox-Android by TomRoush.

the class PDStream method getFileDecodeParams.

/**
 * Get the list of decode parameters. Each entry in the list will refer to
 * an entry in the filters list.
 *
 * @return The list of decode parameters.
 * @throws IOException if there is an error retrieving the parameters.
 */
public List<Object> getFileDecodeParams() throws IOException {
    List<Object> retval = null;
    COSBase dp = stream.getDictionaryObject(COSName.F_DECODE_PARMS);
    if (dp instanceof COSDictionary) {
        Map<?, ?> map = COSDictionaryMap.convertBasicTypesToMap((COSDictionary) dp);
        retval = new COSArrayList<Object>(map, dp, stream, COSName.F_DECODE_PARMS);
    } else if (dp instanceof COSArray) {
        COSArray array = (COSArray) dp;
        List<Object> actuals = new ArrayList<Object>();
        for (int i = 0; i < array.size(); i++) {
            actuals.add(COSDictionaryMap.convertBasicTypesToMap((COSDictionary) array.getObject(i)));
        }
        retval = new COSArrayList<Object>(actuals, array);
    }
    return retval;
}