Examples of ImageInputStream

ae.javax.imageio.stream.ImageInputStream
A seekable input stream interface for use by ImageReaders. Various input sources, such as InputStreams and Files, as well as future fast I/O sources may be "wrapped" by a suitable implementation of this interface for use by the Image I/O API. @see ImageInputStreamImpl @see FileImageInputStream @see FileCacheImageInputStream @see MemoryCacheImageInputStream
com.alibaba.simpleimage.io.ImageInputStream
@author wendell
com.google.code.appengine.imageio.stream.ImageInputStream
javax.imageio.stream.ImageInputStream
A seekable input stream interface for use by ImageReaders. Various input sources, such as InputStreams and Files, as well as future fast I/O sources may be "wrapped" by a suitable implementation of this interface for use by the Image I/O API. @see ImageInputStreamImpl @see FileImageInputStream @see FileCacheImageInputStream @see MemoryCacheImageInputStream
org.apache.hadoop.hdfs.server.namenode.ImageInputStream
Wrapper class used for loading images to the namesystem. It contains information about the md5 digest, size and the string representation of the underlying image location.

Examples of javax.imageio.stream.ImageInputStream

    public ImageInfo preloadImage(String uri, Source src, ImageContext context)
            throws IOException, ImageException {
        if (!ImageUtil.hasImageInputStream(src)) {
            return null;
        }
        ImageInputStream in = ImageUtil.needImageInputStream(src);
        byte[] header = getHeader(in, TIFF_SIG_LENGTH);
        boolean supported = false;


        // first 2 bytes = II (little endian encoding)
        if (header[0] == (byte) 0x49 && header[1] == (byte) 0x49) {

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Examples of javax.imageio.stream.ImageInputStream

        long stripOffset;
        long stripLength;
        TIFFDirectory dir;


        Source src = session.needSource(info.getOriginalURI());
        ImageInputStream in = ImageUtil.needImageInputStream(src);
        in.mark();
        try {
            SeekableStream seekable = new SeekableStreamAdapter(in);
            dir = new TIFFDirectory(seekable, 0);
            TIFFField fld;


            fld = dir.getField(TIFFImageDecoder.TIFF_COMPRESSION);
            if (fld != null) {
                compression = fld.getAsInt(0);
                switch (compression) {
                case COMPRESSION_CCITT_1D:
                case COMPRESSION_FAX_GROUP4:
                    break;
                case COMPRESSION_FAX_GROUP3:
                    //Note: the TIFFImage compression constants seem to be a bit misleading!
                    compression = TIFFImage.COMP_FAX_G3_1D; //1D is the default for Group3
                    fld = dir.getField(TIFFImageDecoder.TIFF_T4_OPTIONS);
                    if (fld != null) {
                        long t4Options = fld.getAsLong(0);
                        if ((t4Options & 0x01) != 0) {
                            compression = TIFFImage.COMP_FAX_G3_2D; //"Abusing" for 2D signalling
                        }
                    }
                    break;
                default:
                    log.debug("Unsupported compression " + compression);
                    throw new ImageException(
                            "ImageLoader doesn't support TIFF compression: " + compression);
                }
            }
            //Read information used for raw embedding
            fld = dir.getField(TIFFImageDecoder.TIFF_FILL_ORDER);
            if (fld != null) {
                fillOrder = fld.getAsInt(0);
            }


            int stripCount;
            fld = dir.getField(TIFFImageDecoder.TIFF_ROWS_PER_STRIP);
            if (fld == null) {
                stripCount = 1;
            } else {
                stripCount = (int)(info.getSize().getHeightPx() / fld.getAsLong(0));
            }
            if (stripCount > 1) {
                log.debug("More than one strip found in TIFF image.");
                throw new ImageException(
                        "ImageLoader doesn't support multiple strips");
            }
            stripOffset = dir.getField(TIFFImageDecoder.TIFF_STRIP_OFFSETS).getAsLong(0);
            stripLength = dir.getField(TIFFImageDecoder.TIFF_STRIP_BYTE_COUNTS).getAsLong(0);
        } finally {
            in.reset();
        }


        in.seek(stripOffset);
        InputStream subin = new SubInputStream(ImageUtil.needInputStream(src), stripLength, true);
        if (fillOrder == 2) {
            //Decorate to flip bit order
            subin = new FillOrderChangeInputStream(subin);
        }

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Examples of javax.imageio.stream.ImageInputStream

      logger.debug(importFileName + " ext = " + getFileExtensionForImageReader(importFileName));
      Iterator readers = ImageIO.getImageReadersBySuffix(getFileExtensionForImageReader(importFileName));
      ImageReader reader = (ImageReader) readers.next();
   
       try {
          ImageInputStream iis = ImageIO.createImageInputStream(importFile.getInputStream());
          reader.setInput(iis, true);
          int width = reader.getWidth(0);
          int height = reader.getHeight(0);
          logger.debug(importFile.getFileName() + ": width=" + width + ", height=" + height);
          if (width > maxWidth || height >  maxHeight){

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Examples of javax.imageio.stream.ImageInputStream

              logger.debug(fileName + " ext = " + getFileExtensionForImageReader(fileName));
              Iterator readers = ImageIO.getImageReadersBySuffix(getFileExtensionForImageReader(fileName));
              ImageReader reader = (ImageReader) readers.next();
           
               try {
                  ImageInputStream iis = ImageIO.createImageInputStream(uploadedFile.getInputStream());
                  reader.setInput(iis, true);
                  int width = reader.getWidth(0);
                  int height = reader.getHeight(0);
                  logger.debug(uploadedFile.getFileName() + ": width=" + width + ", height=" + height);

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Examples of javax.imageio.stream.ImageInputStream

    @Override
    public final DecodeResult decode(InputStream encoded, OutputStream decoded,
                                         COSDictionary parameters, int index) throws IOException
    {
        ImageReader reader = findImageReader("JPEG", "a suitable JAI I/O image filter is not installed");
        ImageInputStream iis = null;
        try
        {
            iis = ImageIO.createImageInputStream(encoded);
            reader.setInput(iis);


            // get the raster using horrible JAI workarounds
            ImageIO.setUseCache(false);
            Raster raster;
            try
            {
                // I'd like to use ImageReader#readRaster but it is buggy and can't read RGB correctly
                BufferedImage image = reader.read(0);
                raster = image.getRaster();
            }
            catch (IIOException e)
            {
                // JAI can't read CMYK JPEGs using ImageReader#read or ImageIO.read but
                // fortunately ImageReader#readRaster isn't buggy when reading 4-channel files
                raster = reader.readRaster(0, null);
            }


            // special handling for 4-component images
            if (raster.getNumBands() == 4)
            {
                // get APP14 marker
                Integer transform;
                try
                {
                    transform = getAdobeTransform(reader.getImageMetadata(0));
                }
                catch (IIOException e)
                {
                    // catches the error "Inconsistent metadata read from stream"
                    // which seems to be present indicate a YCCK image, but who knows?
                    LOG.warn("Inconsistent metadata read from JPEG stream");
                    transform = 2; // YCCK
                }
                int colorTransform = transform != null ? transform : 0;


                // 0 = Unknown (RGB or CMYK), 1 = YCbCr, 2 = YCCK
                switch (colorTransform)
                {
                    case 0: break; // already CMYK
                    case 1: LOG.warn("YCbCr JPEGs not implemented"); break; // TODO YCbCr
                    case 2: raster = fromYCCKtoCMYK(raster); break;
                }
            }
            else if (raster.getNumBands() == 3)
            {
                // BGR to RGB
                raster = fromBGRtoRGB(raster);
            }


            DataBufferByte dataBuffer = (DataBufferByte)raster.getDataBuffer();
            decoded.write(dataBuffer.getData());
        }
        finally
        {
            if (iis != null)
            {
                iis.close();
            }
            reader.dispose();
        }
        return new DecodeResult(parameters);
    }

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Examples of javax.imageio.stream.ImageInputStream

        if (params != null)
        {
            globals = (COSStream) params.getDictionaryObject(COSName.JBIG2_GLOBALS);
        }


        ImageInputStream iis = null;
        try
        {
            if (globals != null)
            {
                iis = ImageIO.createImageInputStream(
                        new SequenceInputStream(globals.getUnfilteredStream(), encoded));
                reader.setInput(iis);
            }
            else
            {
                iis = ImageIO.createImageInputStream(encoded);
                reader.setInput(iis);
            }


            BufferedImage image;
            try
            {
                image = reader.read(0);
            }
            catch (Exception e)
            {
                // wrap and rethrow any exceptions
                throw new IOException("Could not read JBIG2 image", e);
            }


            // I am assuming since JBIG2 is always black and white
            // depending on your renderer this might or might be needed
            if (image.getColorModel().getPixelSize() != bits.intValue())
            {
                if (bits.intValue() != 1)
                {
                    LOG.warn("Attempting to handle a JBIG2 with more than 1-bit depth");
                }
                BufferedImage packedImage = new BufferedImage(image.getWidth(), image.getHeight(),
                        BufferedImage.TYPE_BYTE_BINARY);
                Graphics graphics = packedImage.getGraphics();
                graphics.drawImage(image, 0, 0, null);
                graphics.dispose();
                image = packedImage;
            }


            DataBuffer dBuf = image.getData().getDataBuffer();
            if (dBuf.getDataType() == DataBuffer.TYPE_BYTE)
            {
                decoded.write(((DataBufferByte) dBuf).getData());
            }
            else
            {
                throw new IOException("Unexpected image buffer type");
            }
        }
        finally
        {
            if (iis != null)
            {
                iis.close();
            }
            reader.dispose();
        }


        // repair missing color space

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Examples of javax.imageio.stream.ImageInputStream


    // try to read using JAI Image I/O
    private BufferedImage readJPX(InputStream input, DecodeResult result) throws IOException
    {
        ImageReader reader = findImageReader("JPEG2000", "Java Advanced Imaging (JAI) Image I/O Tools are not installed");
        ImageInputStream iis = null;
        try
        {
            iis = ImageIO.createImageInputStream(input);
            reader.setInput(iis, true, true);


            BufferedImage image;
            try
            {
                image = reader.read(0);
            }
            catch (Exception e)
            {
                // wrap and rethrow any exceptions
                throw new IOException("Could not read JPEG 2000 (JPX) image", e);
            }


            COSDictionary parameters = result.getParameters();


            // "If the image stream uses the JPXDecode filter, this entry is optional
            // and shall be ignored if present"
            parameters.setInt(COSName.BITS_PER_COMPONENT, image.getColorModel().getComponentSize(0));


            // "Decode shall be ignored, except in the case where the image is treated as a mask"
            if (!parameters.getBoolean(COSName.IMAGE_MASK, false))
            {
                parameters.setItem(COSName.DECODE, null);
            }


            // override dimensions, see PDFBOX-1735
            parameters.setInt(COSName.WIDTH, image.getWidth());
            parameters.setInt(COSName.HEIGHT, image.getHeight());


            // extract embedded color space
            if (!parameters.containsKey(COSName.COLORSPACE))
            {
                result.setColorSpace(new PDJPXColorSpace(image.getColorModel().getColorSpace()));
            }


            return image;
        }
        finally
        {
            if (iis != null)
            {
                iis.close();
            }
            reader.dispose();
        }
    }

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Examples of javax.imageio.stream.ImageInputStream


    public boolean canDecodeInput(Object input) throws IOException {
        if (!(input instanceof ImageInputStream))
            return false;


        ImageInputStream in = (ImageInputStream) input;
        boolean retval;


        in.mark();
        try {
            //todo implement a less expensive canDecode()
            new JPEGDecoderAdapter(in).decode();
            retval = true;
        } catch (JPEGException e) {
            retval = false;
        }
        in.reset();


        return retval;
    }

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Examples of javax.imageio.stream.ImageInputStream

            (byte) 0x3b,
            (byte) 0x67
          };


        ByteArrayInputStream bs = new ByteArrayInputStream(b);
        ImageInputStream i = new MemoryCacheImageInputStream(bs);


        // Test ByteOrder.BIG_ENDIAN, the default.


        h.check(i.getByteOrder() == ByteOrder.BIG_ENDIAN);


        h.check(i.read() == 114);
        i.seek(0);
        h.check(i.readBoolean() == true);
        i.seek(0);
        h.check(i.readByte() == 114);
        i.seek(0);
        h.check(i.readChar() == '\u7270');
        i.seek(0);
        h.check(Double.compare(i.readDouble(), 1.709290273164385E243) == 0);
        i.seek(0);
        h.check(Float.compare(i.readFloat(), 4.7541126E30f) == 0);
        i.seek(0);
        h.check(i.readInt() == 1919944055);
        i.seek(0);
        h.check(i.readLong() == 8246096929276181351L);
        i.seek(0);
        h.check(i.readShort() == 29296);
        i.seek(0);
        h.check(i.readUnsignedByte() == 114);
        i.seek(0);
        h.check(i.readUnsignedInt() == 1919944055);
        i.seek(0);
        h.check(i.readUnsignedShort() == 29296);


        // Test ByteOrder.LITTLE_ENDIAN.
        i.setByteOrder(ByteOrder.LITTLE_ENDIAN);


        h.check(i.getByteOrder() == ByteOrder.LITTLE_ENDIAN);
        i.seek(0);
        h.check(i.read() == 114);
        i.seek(0);
        h.check(i.readBoolean() == true);
        i.seek(0);
        h.check(i.readByte() == 114);
        i.seek(0);
        h.check(i.readChar() == '\u7072');
        i.seek(0);
        h.check(Double.compare(i.readDouble(), 1.9456609400629563E189) == 0);
        i.seek(0);
        h.check(Float.compare(i.readFloat(), 2.7064693E33f) == 0);
        i.seek(0);
        h.check(i.readInt() == 1996845170);
        i.seek(0);
        h.check(i.readLong() == 7438806032077647986L);
        i.seek(0);
        h.check(i.readShort() == 28786);
        i.seek(0);
        h.check(i.readUnsignedByte() == 114);
        i.seek(0);
        h.check(i.readUnsignedInt() == 1996845170);
        i.seek(0);
        h.check(i.readUnsignedShort() == 28786);


        // Test unsigned values.
        b = new byte[]
          { 
            (byte) 0x92,
            (byte) 0x80,
            (byte) 0x05,
            (byte) 0x77,
            (byte) 0xac,
            (byte) 0xf2,
            (byte) 0x8b,
            (byte) 0xa7
          };


        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);


        // Test ByteOrder.BIG_ENDIAN, the default.
        h.check(i.read() == 146);
        i.seek(0);
        h.check(i.readBoolean() == true);
        i.seek(0);
        h.check(i.readByte() == -110);
        i.seek(0);
        h.check(i.readChar() == '\u9280');
        i.seek(0);
        h.check(Double.compare(i.readDouble(), -1.4183142849706364E-219) == 0);
        i.seek(0);
        h.check(Float.compare(i.readFloat(), -8.079283E-28f) == 0);
        i.seek(0);
        h.check(i.readInt() == -1837103753);
        i.seek(0);
        h.check(i.readLong() == -7890300535592285273L);
        i.seek(0);
        h.check(i.readShort() == -28032);
        i.seek(0);
        h.check(i.readUnsignedByte() == 146);
        i.seek(0);
        h.check(i.readUnsignedInt() == 2457863543L);
        i.seek(0);
        h.check(i.readUnsignedShort() == 37504);


        // Test ByteOrder.LITTLE_ENDIAN.
        i.setByteOrder(ByteOrder.LITTLE_ENDIAN);
        i.seek(0);
        h.check(i.read() == 146);
        i.seek(0);
        h.check(i.readBoolean() == true);
        i.seek(0);
        h.check(i.readByte() == -110);
        i.seek(0);
        h.check(i.readChar() == '\u8092');
        i.seek(0);
        h.check(Double.compare(i.readDouble(), -3.463391436203922E-118) == 0);
        i.seek(0);
        h.check(Float.compare(i.readFloat(), 2.707747E33f) == 0);
        i.seek(0);
        h.check(i.readInt() == 1996849298);
        i.seek(0);
        h.check(i.readLong() == -6373734025067659118L);
        i.seek(0);
        h.check(i.readShort() == -32622);
        i.seek(0);
        h.check(i.readUnsignedByte() == 146);
        i.seek(0);
        h.check(i.readUnsignedInt() == 1996849298);
        i.seek(0);
        h.check(i.readUnsignedShort() == 32914);


        // Test flush().


        i.seek(4);


        h.check(i.getStreamPosition() == 4);


        i.flush();


        h.check(i.getFlushedPosition() == 4);
        
        boolean exceptionThrown = false;
        try
          {
            i.flushBefore(3);
          }
        catch (IndexOutOfBoundsException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        exceptionThrown = false;
        try
          {
            i.flushBefore(5);
          }
        catch (IndexOutOfBoundsException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        exceptionThrown = false;
        try
          {
            i.seek(2);
          }
        catch (IndexOutOfBoundsException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        exceptionThrown = false;
        try
          {
            i.seek(3);
          }
        catch (IndexOutOfBoundsException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        exceptionThrown = false;
        try
          {
            i.setBitOffset(-1);
          }
        catch (IllegalArgumentException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        exceptionThrown = false;
        try
          {
            i.setBitOffset(8);
          }
        catch (IllegalArgumentException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        i.setBitOffset(4);
        h.check(i.getBitOffset() == 4);


        // A MemoryCacheImageInputStream is cached in memory.
        h.check(i.isCached() == true);
        h.check(i.isCachedFile() == false);
        h.check(i.isCachedMemory() == true);


        h.check(i.length() == -1);


        // Test mark() and reset().
        i.seek(4);
        i.mark();


        i.read();
        i.read();


        i.reset();
        h.check(i.getStreamPosition() == 4);


        // Test readBit().
        // We're currently at b[4], byte 0xac.
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 0);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 0);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 0);


        // Check that the bit offset is incremented.
        h.check(i.getBitOffset() == 7);


        // Roll back the bit offset within the same byte.
        i.setBitOffset(2);


        // R-read some bits within the same byte.
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 0);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 0);


        // Check that the stream position is still 4.
        h.check(i.getStreamPosition() == 4);


        // Read the final bit in b[4].
        h.check(i.readBit() == 0);


        // Check that readBit on the 8th bit increments the stream
        // position.
        h.check(i.getStreamPosition() == 5);


        // Read the bits from b[5], byte 0xf2.
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 1);


        h.check(i.getBitOffset() == 4);


        h.check(i.readBit() == 0);
        h.check(i.readBit() == 0);
        h.check(i.readBit() == 1);
        h.check(i.readBit() == 0);


        // Check that the bit offset is reset and the position
        // incremented.
        h.check(i.getBitOffset() == 0);
        h.check(i.getStreamPosition() == 6);


        h.check(i.length() == -1);


        // Test close().
        i.close();


        // Test checkClosed().
        exceptionThrown = false;
        try
          {
            i.close();
          }
        catch (IOException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        // 64 bytes of data.
        b = new byte[]
          { 
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
          };


        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);


        // Test readBits().
        i.seek(5);
        i.setBitOffset(6);


        exceptionThrown = false;
        try
          {
            i.readBits(-1);
          }
        catch (IllegalArgumentException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        exceptionThrown = false;
        try
          {
            i.readBits(65);
          }
        catch (IllegalArgumentException e)
          {
            exceptionThrown = true;
          }
        h.check(exceptionThrown);


        h.check(i.readBits(59) == 366848453836545810L);


        i.seek(5);
        i.setBitOffset(6);
        h.check(i.readBits(58) == 183424226918272905L);


        b = new byte[]
          {
            (byte) 0xa2, (byte) 0xe9, (byte) 0xd7, (byte) 0x34,
            (byte) 0x2a, (byte) 0x83, (byte) 0xe2, (byte) 0x40
          };
        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);
        h.check(i.readBits(59) == 366848453836545810L);


        b = new byte[]
          {
            (byte) 0xa2, (byte) 0x02
          };
        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);


        long[] res = new long[8];


        i.seek(0);


        h.check(i.readBits(0) == 0);
        i.seek(0);


        for (k = 0; k < 8; k++)
          {
            i.setBitOffset(k);
            res[k] = i.readBits(8);
            i.seek(0);
          }
        i.seek(0);
        h.check(Arrays.equals(res, new long[] { 162, 68, 136, 16,
                                                32, 64, 128, 1 }));


        // 64 bytes of data.
        b = new byte[]
          { 
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            // Here is a two-character-long UTF String to be read by
            // DataInputStream.
            (byte) 0x00, (byte) 0x02, (byte) 0x12, (byte) 0x21,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
          };


        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);


        // Test mark() and reset().
        i.seek(17);
        h.check(i.getStreamPosition() == 17);
        i.mark();
        i.seek(49);
        h.check(i.getStreamPosition() == 49);
        i.reset();
        h.check(i.getStreamPosition() == 17);


        // Test skipBytes().
        i.setBitOffset(3);
        i.skipBytes(20);
        h.check(i.getStreamPosition() == 37);
        h.check(i.getBitOffset() == 0);


        // Test readUTF().
        i.seek(12);
        String str = i.readUTF();
        h.check(str.codePointAt(0) == 18);
        h.check(str.codePointAt(1) == 33);


        b = new byte[]
          { (byte) 0x47, (byte) 0x4e, (byte) 0x55,
            '\r',
            (byte) 0x43, (byte) 0x6c, (byte) 0x61, (byte) 0x73, (byte) 0x73,
            (byte) 0x70, (byte) 0x61, (byte) 0x74, (byte) 0x68,
            '\r', '\n',
            (byte) 0x52, (byte) 0x75, (byte) 0x6c,
            (byte) 0x65, (byte) 0x7a,
            '\n',
            (byte) 0x44, (byte) 0x75, (byte) 0x64, (byte) 0x65, (byte) 0x7a,
            (byte) 0x21,
            '\r'
          };


        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);


        h.check(i.readLine().equals("GNU"));
        h.check(i.readLine().equals("Classpath"));
        h.check(i.readLine().equals("Rulez"));
        h.check(i.readLine().equals("Dudez!"));
        h.check(i.readLine() == null);


        // 64 bytes of data.
        b = new byte[]
          { 
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
            (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
            (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
            (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
            (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
            (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
          };


        bs = new ByteArrayInputStream(b);
        i = new MemoryCacheImageInputStream(bs);


        byte[] fullB = new byte[26];
        i.seek(0);
        i.readFully(fullB);
        h.check(Arrays.equals(fullB,
                              new byte[]
            {
              (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
              (byte) 0xac, (byte) 0xf2, (byte) 0x8b, (byte) 0xa7,
              (byte) 0x5c, (byte) 0xd0, (byte) 0xaa, (byte) 0x0f,
              (byte) 0x89, (byte) 0x00, (byte) 0x12, (byte) 0xf1,
              (byte) 0xa1, (byte) 0xef, (byte) 0x82, (byte) 0x00,
              (byte) 0x92, (byte) 0x80, (byte) 0x05, (byte) 0x77,
              (byte) 0xac, (byte) 0xf2
            }));


        for (k = 0; k < fullB.length; k++)
          fullB[k] = 0;


        i.seek(0);
        i.readFully(fullB, 5, 13);


        h.check(Arrays.equals(fullB, new byte[]
            {
              (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
              (byte) 0x00, (byte) 0x92, (byte) 0x80, (byte) 0x05,
              (byte) 0x77, (byte) 0xac, (byte) 0xf2, (byte) 0x8b,
              (byte) 0xa7, (byte) 0x5c, (byte) 0xd0, (byte) 0xaa,
              (byte) 0x0f, (byte) 0x89, (byte) 0x00, (byte) 0x00,
              (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
              (byte) 0x00, (byte) 0x00
            }));


        char[] fullC = new char[15];
        i.seek(0);
        i.readFully(fullC, 0, 15);


        h.check(Arrays.equals(fullC, new char[]
            {
              (char) 37504, (char) 1399, (char) 44274,
              (char) 35751, (char) 23760, (char) 43535,
              (char) 35072, (char) 4849, (char) 41455,
              (char) 33280, (char) 37504, (char) 1399,
              (char) 44274, (char) 35751, (char) 23760
            }));


        double[] fullD = new double[8];
        i.seek(0);
        i.readFully(fullD, 0, 8);


        h.check(Arrays.equals(fullD, new double[] {
                                -1.4183142849706364E-219,
                                1.2402952421911034E139,
                                -3.154063812740471E-145,
                                -3.556316535750171E-92,
                                -2.4925149951304603E-265,
                                -1.4183142849706364E-219,
                                1.2402952421911034E139,
                                -3.154063812740471E-145
                              }));


        float[] fullF = new float[16];
        i.seek(0);
        i.readFully(fullF, 0, 16);


        h.check(Arrays.equals(fullF, new float[] {
                                -8.079283E-28f,
                                -6.893558E-12f,
                                4.69870212E17f,
                                -1.5416346E-33f,
                                -1.6229681E-18f,
                                -8.079283E-28f,
                                -6.893558E-12f,
                                4.69870212E17f,
                                -1.5416346E-33f,
                                -1.6229681E-18f,
                                -8.079283E-28f,
                                -6.893558E-12f,
                                4.69870212E17f,
                                -1.5416346E-33f,
                                -1.6229681E-18f,
                                -8.079283E-28f
                              }));


        int[] fullI = new int[16];
        i.seek(0);
        i.readFully(fullI, 0, 16);


        h.check(Arrays.equals(fullI, new int[] {
                                -1837103753,
                                -1393390681,
                                1557178895,
                                -1996483855,
                                -1578139136,
                                -1837103753,
                                -1393390681,
                                1557178895,
                                -1996483855,
                                -1578139136,
                                -1837103753,
                                -1393390681,
                                1557178895,
                                -1996483855,
                                -1578139136,
                                -1837103753,
                              }));


        long[] fullL = new long[8];
        i.seek(0);
        i.readFully(fullL, 0, 8);


        h.check(Arrays.equals(fullL, new long[] {
                                -7890300535592285273L,
                                6688032430344901361L,
                                -6778055975199832713L,
                                -5984567403888989681L,
                                -8574832861500177920L,
                                -7890300535592285273L,
                                6688032430344901361L,
                                -6778055975199832713L,
                              }));


        short[] fullS = new short[32];
        i.seek(0);
        i.readFully(fullS, 0, 32);


        h.check(Arrays.equals(fullS, new short[] {
                                -28032,
                                1399,
                                -21262,

View Full Code Here

Examples of javax.imageio.stream.ImageInputStream

            return;
        }
        Iterator readers = ImageIO.getImageReadersBySuffix(suffix);
        assertTrue("No image reader found for suffix " + suffix, readers.hasNext());
        ImageReader reader = (ImageReader) readers.next();
        ImageInputStream iis = ImageIO.createImageInputStream(new File(filename));
        assertNotNull("No ImageInputStream created for file " + filename, iis);
        reader.setInput(iis);
        IIOMetadata imageMetadata = reader.getImageMetadata(0);
        Element root = (Element) imageMetadata.getAsTree(STANDARD_METADATA_FORMAT);
        NodeList dimensionNodes = root.getElementsByTagName("Dimension");
        assertTrue("No resolution found in image file " + filename, dimensionNodes.getLength() > 0);
        Element dimensionElement = (Element) dimensionNodes.item(0);


        NodeList pixelSizeNodes = dimensionElement.getElementsByTagName("HorizontalPixelSize");
        assertTrue("No X resolution found in image file " + filename, pixelSizeNodes.getLength() > 0);
        Node pixelSizeNode = pixelSizeNodes.item(0);
        String val = pixelSizeNode.getAttributes().getNamedItem("value").getNodeValue();
        int actualResolution = (int) Math.round(25.4 / Double.parseDouble(val));
        assertEquals("X resolution doesn't match in image file " + filename, expectedResolution, actualResolution);


        pixelSizeNodes = dimensionElement.getElementsByTagName("VerticalPixelSize");
        assertTrue("No Y resolution found in image file " + filename, pixelSizeNodes.getLength() > 0);
        pixelSizeNode = pixelSizeNodes.item(0);
        val = pixelSizeNode.getAttributes().getNamedItem("value").getNodeValue();
        actualResolution = (int) Math.round(25.4 / Double.parseDouble(val));
        assertEquals("Y resolution doesn't match", expectedResolution, actualResolution);


        iis.close();
        reader.dispose();
    }

View Full Code Here

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