Examples of FlateFilter

Examples of org.apache.fop.pdf.FlateFilter

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        // when(cm.hasAlpha()).thenReturn(false);
        when(doc.getProfile()).thenReturn(profile);
        when(profile.getPDFAMode()).thenReturn(PDFAMode.PDFA_1A);
        when(irpng.getSize()).thenReturn(is);
        irpnga.setup(doc);
        FlateFilter filter = (FlateFilter) irpnga.getPDFFilter();
        assertEquals(1, filter.getColors());
    }
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Examples of org.apache.fop.pdf.FlateFilter

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        // when(cm.hasAlpha()).thenReturn(false);
        when(doc.getProfile()).thenReturn(profile);
        when(profile.getPDFAMode()).thenReturn(PDFAMode.PDFA_1A);
        when(irpng.getSize()).thenReturn(is);
        irpnga.setup(doc);
        FlateFilter filter = (FlateFilter) irpnga.getPDFFilter();
        assertEquals(3, filter.getColors());
    }
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Examples of org.apache.fop.pdf.FlateFilter

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        // when(cm.hasAlpha()).thenReturn(false);
        when(doc.getProfile()).thenReturn(profile);
        when(profile.getPDFAMode()).thenReturn(PDFAMode.PDFA_1A);
        when(irpng.getSize()).thenReturn(is);
        irpnga.setup(doc);
        FlateFilter filter = (FlateFilter) irpnga.getPDFFilter();
        assertEquals(numColorComponents, filter.getColors());

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] data = RawPNGTestUtil.buildGRGBAData(gray, red, green, blue, alpha);
        ByteArrayInputStream bais = new ByteArrayInputStream(data);
        when(irpng.createInputStream()).thenReturn(bais);
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Examples of org.apache.fop.pdf.FlateFilter

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            // numberOfInterleavedComponents = (cm.hasAlpha() ? 1 : 0) + cm.getNumColorComponents();
            numberOfInterleavedComponents = cm.getNumComponents();
        }

        // set up image compression for non-alpha channel
        FlateFilter flate;
        try {
            flate = new FlateFilter();
            flate.setApplied(true);
            flate.setPredictor(FlateFilter.PREDICTION_PNG_OPT);
            if (numberOfInterleavedComponents < 3) {
                // means palette (1) or gray (1) or gray + alpha (2)
                flate.setColors(1);
            } else {
                // means rgb (3) or rgb + alpha (4)
                flate.setColors(3);
            }
            flate.setColumns(image.getSize().getWidthPx());
            flate.setBitsPerComponent(this.getBitsPerComponent());
        } catch (PDFFilterException e) {
            throw new RuntimeException("FlateFilter configuration error", e);
        }
        this.pdfFilter = flate;

        // Handle transparency channel if applicable; note that for palette images the transparency is
        // not TRANSLUCENT
        if (cm.hasAlpha() && cm.getTransparency() == ColorModel.TRANSLUCENT) {
            doc.getProfile().verifyTransparencyAllowed(image.getInfo().getOriginalURI());
            // TODO: Implement code to combine image with background color if transparency is not allowed
            // here we need to inflate the PNG pixel data, which includes alpha, separate the alpha channel
            // and then deflate it back again
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            DeflaterOutputStream dos = new DeflaterOutputStream(baos, new Deflater());
            InputStream in = ((ImageRawStream) image).createInputStream();
            try {
                InflaterInputStream infStream = new InflaterInputStream(in, new Inflater());
                DataInputStream dataStream = new DataInputStream(infStream);
                // offset is the byte offset of the alpha component
                int offset = numberOfInterleavedComponents - 1; // 1 for GA, 3 for RGBA
                int numColumns = image.getSize().getWidthPx();
                int bytesPerRow = numberOfInterleavedComponents * numColumns;
                int filter;
                // read line by line; the first byte holds the filter
                while ((filter = dataStream.read()) != -1) {
                    byte[] bytes = new byte[bytesPerRow];
                    dataStream.readFully(bytes, 0, bytesPerRow);
                    dos.write((byte) filter);
                    for (int j = 0; j < numColumns; j++) {
                        dos.write(bytes, offset, 1);
                        offset += numberOfInterleavedComponents;
                    }
                    offset = numberOfInterleavedComponents - 1;
                }
                dos.close();
            } catch (IOException e) {
                throw new RuntimeException("Error processing transparency channel:", e);
            } finally {
                IOUtils.closeQuietly(in);
            }
            // set up alpha channel compression
            FlateFilter transFlate;
            try {
                transFlate = new FlateFilter();
                transFlate.setApplied(true);
                transFlate.setPredictor(FlateFilter.PREDICTION_PNG_OPT);
                transFlate.setColors(1);
                transFlate.setColumns(image.getSize().getWidthPx());
                transFlate.setBitsPerComponent(this.getBitsPerComponent());
            } catch (PDFFilterException e) {
                throw new RuntimeException("FlateFilter configuration error", e);
            }
            BitmapImage alphaMask = new BitmapImage("Mask:" + this.getKey(), image.getSize().getWidthPx(),
                    image.getSize().getHeightPx(), baos.toByteArray(), null);
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Examples of org.apache.fop.pdf.FlateFilter

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            // numberOfInterleavedComponents = (cm.hasAlpha() ? 1 : 0) + cm.getNumColorComponents();
            numberOfInterleavedComponents = cm.getNumComponents();
        }

        // set up image compression for non-alpha channel
        FlateFilter flate;
        try {
            flate = new FlateFilter();
            flate.setApplied(true);
            flate.setPredictor(FlateFilter.PREDICTION_PNG_OPT);
            if (numberOfInterleavedComponents < 3) {
                // means palette (1) or gray (1) or gray + alpha (2)
                flate.setColors(1);
            } else {
                // means rgb (3) or rgb + alpha (4)
                flate.setColors(3);
            }
            flate.setColumns(image.getSize().getWidthPx());
            flate.setBitsPerComponent(this.getBitsPerComponent());
        } catch (PDFFilterException e) {
            throw new RuntimeException("FlateFilter configuration error", e);
        }
        this.pdfFilter = flate;
        this.disallowMultipleFilters();

        // Handle transparency channel if applicable; note that for palette images the transparency is
        // not TRANSLUCENT
        if (cm.hasAlpha() && cm.getTransparency() == ColorModel.TRANSLUCENT) {
            doc.getProfile().verifyTransparencyAllowed(image.getInfo().getOriginalURI());
            // TODO: Implement code to combine image with background color if transparency is not allowed
            // here we need to inflate the PNG pixel data, which includes alpha, separate the alpha channel
            // and then deflate it back again
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            DeflaterOutputStream dos = new DeflaterOutputStream(baos, new Deflater());
            InputStream in = ((ImageRawStream) image).createInputStream();
            try {
                InflaterInputStream infStream = new InflaterInputStream(in, new Inflater());
                DataInputStream dataStream = new DataInputStream(infStream);
                // offset is the byte offset of the alpha component
                int offset = numberOfInterleavedComponents - 1; // 1 for GA, 3 for RGBA
                int numColumns = image.getSize().getWidthPx();
                int bytesPerRow = numberOfInterleavedComponents * numColumns;
                int filter;
                // read line by line; the first byte holds the filter
                while ((filter = dataStream.read()) != -1) {
                    byte[] bytes = new byte[bytesPerRow];
                    dataStream.readFully(bytes, 0, bytesPerRow);
                    dos.write((byte) filter);
                    for (int j = 0; j < numColumns; j++) {
                        dos.write(bytes, offset, 1);
                        offset += numberOfInterleavedComponents;
                    }
                    offset = numberOfInterleavedComponents - 1;
                }
                dos.close();
            } catch (IOException e) {
                throw new RuntimeException("Error processing transparency channel:", e);
            } finally {
                IOUtils.closeQuietly(in);
            }
            // set up alpha channel compression
            FlateFilter transFlate;
            try {
                transFlate = new FlateFilter();
                transFlate.setApplied(true);
                transFlate.setPredictor(FlateFilter.PREDICTION_PNG_OPT);
                transFlate.setColors(1);
                transFlate.setColumns(image.getSize().getWidthPx());
                transFlate.setBitsPerComponent(this.getBitsPerComponent());
            } catch (PDFFilterException e) {
                throw new RuntimeException("FlateFilter configuration error", e);
            }
            BitmapImage alphaMask = new BitmapImage("Mask:" + this.getKey(), image.getSize().getWidthPx(),
                    image.getSize().getHeightPx(), baos.toByteArray(), null);
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