Examples of org.apache.pdfbox.rendering.PDFRenderer.renderImage()

Class org.apache.pdfbox.rendering.PDFRenderer

Examples of org.apache.pdfbox.rendering.PDFRenderer.renderImage()

org.apache.pdfbox.rendering.PDFRenderer.renderImage()
Returns the given page as an RGB image at 72 DPI @param pageIndex the zero-based index of the page to be converted. @return the rendered page image @throws IOException if the PDF cannot be read

        PDFRenderer pdfRenderer = new PDFRenderer(document);
        ArrayList<BufferedImage> srcImgTab = new ArrayList<BufferedImage>();
        ArrayList<ByteArrayOutputStream> srcContentStreamTab = new ArrayList<ByteArrayOutputStream>();
        for (int i = 0; i < numSrcPages; ++i)
        {
            srcImgTab.add(pdfRenderer.renderImage(i));
            COSStream contentStream = document.getPage(i).getContentStream();
            InputStream unfilteredStream = contentStream.getUnfilteredStream();
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            IOUtils.copy(unfilteredStream, baos);
            unfilteredStream.close();

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        Assert.assertEquals(numSrcPages, encryptedDoc.getNumberOfPages());
        pdfRenderer = new PDFRenderer(encryptedDoc);
        for (int i = 0; i < encryptedDoc.getNumberOfPages(); ++i)
        {
            // compare rendering
            BufferedImage bim = pdfRenderer.renderImage(i);
            ValidateXImage.checkIdent(bim, srcImgTab.get(i));


            // compare content streams
            COSStream contentStreamDecr = encryptedDoc.getPage(i).getContentStream();
            InputStream unfilteredStream = contentStreamDecr.getUnfilteredStream();

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        PDDocument doc = null;
        try
        {
            doc = PDDocument.load(PDFontTest.class.getResourceAsStream("F001u_3_7j.pdf"));
            PDFRenderer renderer = new PDFRenderer(doc);
            renderer.renderImage(0);
            // the allegation is that renderImage() will crash the JVM or hang
        }
        finally
        {
            if (doc != null)

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        PDDocument doc = null;
        try
        {
            doc = PDDocument.load(PDFontTest.class.getResourceAsStream("256.pdf"));
            PDFRenderer renderer = new PDFRenderer(doc);
            renderer.renderImage(0);
            // the allegation is that renderImage() will crash the JVM or hang
        }
        finally
        {
            if (doc != null)

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    public void render() throws IOException
    {
        File file = new File(INPUT_DIR, fileName);
        PDDocument document = PDDocument.load(file);
        PDFRenderer renderer = new PDFRenderer(document);
        BufferedImage image = renderer.renderImage(0);


        // We don't actually do anything with the image for the same reason that
        // TestPDFToImage is disabled - different JVMs produce different results
        // but at least we can make sure that PDFBox did not throw any exceptions
        // during the rendering process.

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