| java.lang.Object
 com.sun.media.imageioimpl.common.ImageUtil
| ImageUtil | | public class ImageUtil (Code) | | |
| Method Summary | |
| final public static void | canEncodeImage(ImageWriter writer, ImageTypeSpecifier type)
Checks that the provided ImageWriter can encode
the provided ImageTypeSpecifier or not. | | final public static void | canEncodeImage(ImageWriter writer, ColorModel colorModel, SampleModel sampleModel)
Checks that the provided ImageWriter can encode
the provided ColorModel and SampleModel. | | public static String | convertObjectToString(Object obj)
| | final public static ColorModel | createColorModel(SampleModel sampleModel)
Creates a ColorModel that may be used with the
specified SampleModel. | | public static ColorModel | createColorModel(ColorSpace colorSpace, SampleModel sampleModel)
| | public static long | getBandSize(SampleModel sm)
| | final public static ImageTypeSpecifier | getDestinationType(ImageReadParam param, Iterator imageTypes)
Gets the destination image type. | | public static int | getElementSize(SampleModel sm)
| | public static List | getJDKImageReaderWriterSPI(ServiceRegistry registry, String formatName, boolean isReader)
| | public static byte[] | getPackedBinaryData(Raster raster, Rectangle rect)
For the case of binary data (isBinary() returns
true), return the binary data as a packed byte array.
The data will be packed as eight bits per byte with no bit offset,
i.e., the first bit in each image line will be the left-most of the
first byte of the line. | | public static long | getTileSize(SampleModel sm)
| | public static byte[] | getUnpackedBinaryData(Raster raster, Rectangle rect)
Returns the binary data unpacked into an array of bytes. | | final public static boolean | imageIsContiguous(RenderedImage image)
Returns whether the image has contiguous data across rows. | | public static boolean | isBinary(SampleModel sm)
| | public static boolean | isGrayscaleMapping(IndexColorModel icm)
Tests whether the color indices represent a gray-scale image with
the indicated number of bits over the color component range [0,255].
The grayscale mapping may be inverted, i.e., 0 -> 255 and
mapSize -> 0.
Parameters:
icm - The gray-to-color mapping. | | public static boolean | isIndicesForGrayscale(byte[] r, byte[] g, byte[] b)
Tests whether the color indices represent a gray-scale image.
Parameters:
r - The red channel color indices.
Parameters:
g - The green channel color indices.
Parameters:
b - The blue channel color indices. | | public static boolean | isNonStandardICCColorSpace(ColorSpace cs)
Returns true if the given ColorSpace object
is an instance of ICC_ColorSpace but is not one of the
standard ColorSpaces returned by
ColorSpace.getInstance(). | | public static void | processOnRegistration(ServiceRegistry registry, Class category, String formatName, ImageReaderWriterSpi spi, int deregisterJvmVersion, int priorityJvmVersion)
| | public static int | readMultiByteInteger(ImageInputStream iis)
| | public static void | setPackedBinaryData(byte[] binaryDataArray, WritableRaster raster, Rectangle rect)
Sets the supplied Raster's data from an array
of packed binary data of the form returned by
getPackedBinaryData(). | | public static void | setUnpackedBinaryData(byte[] bdata, WritableRaster raster, Rectangle rect)
Copies data into the packed array of the Raster
from an array of unpacked data of the form returned by
getUnpackedBinaryData(). |
| canEncodeImage | | final public static void canEncodeImage(ImageWriter writer, ImageTypeSpecifier type) throws IIOException(Code) | | Checks that the provided ImageWriter can encode
the provided ImageTypeSpecifier or not. If not, an
IIOException will be thrown.
Parameters:
writer - The provided ImageWriter.
Parameters:
type - The image to be tested.
throws:
IIOException - If the writer cannot encoded the provided image. |
| canEncodeImage | | final public static void canEncodeImage(ImageWriter writer, ColorModel colorModel, SampleModel sampleModel) throws IIOException(Code) | | Checks that the provided ImageWriter can encode
the provided ColorModel and SampleModel.
If not, an IIOException will be thrown.
Parameters:
writer - The provided ImageWriter.
Parameters:
colorModel - The provided ColorModel.
Parameters:
sampleModel - The provided SampleModel.
throws:
IIOException - If the writer cannot encoded the provided image. |
| convertObjectToString | | public static String convertObjectToString(Object obj)(Code) | | Converts the provided object to String
|
| createColorModel | | final public static ColorModel createColorModel(SampleModel sampleModel)(Code) | | Creates a ColorModel that may be used with the
specified SampleModel. If a suitable
ColorModel cannot be found, this method returns
null.
Suitable ColorModels are guaranteed to exist
for all instances of ComponentSampleModel.
For 1- and 3- banded SampleModels, the returned
ColorModel will be opaque. For 2- and 4-banded
SampleModels, the output will use alpha transparency
which is not premultiplied. 1- and 2-banded data will use a
grayscale ColorSpace, and 3- and 4-banded data a sRGB
ColorSpace. Data with 5 or more bands will have a
BogusColorSpace.
An instance of DirectColorModel will be created for
instances of SinglePixelPackedSampleModel with no more
than 4 bands.
An instance of IndexColorModel will be created for
instances of MultiPixelPackedSampleModel. The colormap
will be a grayscale ramp with 1 << numberOfBits
entries ranging from zero to at most 255.
An instance of ColorModel that is suitable forthe supplied SampleModel, or null.
throws:
IllegalArgumentException - If sampleModel isnull. |
| createColorModel | | public static ColorModel createColorModel(ColorSpace colorSpace, SampleModel sampleModel)(Code) | | |
| getBandSize | | public static long getBandSize(SampleModel sm)(Code) | | |
| getElementSize | | public static int getElementSize(SampleModel sm)(Code) | | |
| getPackedBinaryData | | public static byte[] getPackedBinaryData(Raster raster, Rectangle rect)(Code) | | For the case of binary data (isBinary() returns
true), return the binary data as a packed byte array.
The data will be packed as eight bits per byte with no bit offset,
i.e., the first bit in each image line will be the left-most of the
first byte of the line. The line stride in bytes will be
(int)((getWidth()+7)/8). The length of the returned
array will be the line stride multiplied by getHeight()
the binary data as a packed array of bytes with zero offsetof null if the data are not binary.
throws:
IllegalArgumentException - if isBinary() returnsfalse with the SampleModel of thesupplied Raster as argument. |
| getTileSize | | public static long getTileSize(SampleModel sm)(Code) | | |
| getUnpackedBinaryData | | public static byte[] getUnpackedBinaryData(Raster raster, Rectangle rect)(Code) | | Returns the binary data unpacked into an array of bytes.
The line stride will be the width of the Raster.
throws:
IllegalArgumentException - if isBinary() returnsfalse with the SampleModel of thesupplied Raster as argument. |
| imageIsContiguous | | final public static boolean imageIsContiguous(RenderedImage image)(Code) | | Returns whether the image has contiguous data across rows.
|
| isBinary | | public static boolean isBinary(SampleModel sm)(Code) | | |
| isGrayscaleMapping | | public static boolean isGrayscaleMapping(IndexColorModel icm)(Code) | | Tests whether the color indices represent a gray-scale image with
the indicated number of bits over the color component range [0,255].
The grayscale mapping may be inverted, i.e., 0 -> 255 and
mapSize -> 0.
Parameters:
icm - The gray-to-color mapping. Whether the IndexColorModel maps indexi to ((255*i)/icm.getMapSize()-1).
throws:
IllegalArgumentException - if icm isnull. |
| isIndicesForGrayscale | | public static boolean isIndicesForGrayscale(byte[] r, byte[] g, byte[] b)(Code) | | Tests whether the color indices represent a gray-scale image.
Parameters:
r - The red channel color indices.
Parameters:
g - The green channel color indices.
Parameters:
b - The blue channel color indices. If all the indices have 256 entries, and are identical mappings,return true; otherwise, return false. |
| isNonStandardICCColorSpace | | public static boolean isNonStandardICCColorSpace(ColorSpace cs)(Code) | | Returns true if the given ColorSpace object
is an instance of ICC_ColorSpace but is not one of the
standard ColorSpaces returned by
ColorSpace.getInstance().
Parameters:
cs - The ColorSpace to test. |
| setPackedBinaryData | | public static void setPackedBinaryData(byte[] binaryDataArray, WritableRaster raster, Rectangle rect)(Code) | | Sets the supplied Raster's data from an array
of packed binary data of the form returned by
getPackedBinaryData().
throws:
IllegalArgumentException - if isBinary() returnsfalse with the SampleModel of thesupplied Raster as argument. |
| setUnpackedBinaryData | | public static void setUnpackedBinaryData(byte[] bdata, WritableRaster raster, Rectangle rect)(Code) | | Copies data into the packed array of the Raster
from an array of unpacked data of the form returned by
getUnpackedBinaryData().
If the data are binary, then the target bit will be set if
and only if the corresponding byte is non-zero.
throws:
IllegalArgumentException - if isBinary() returnsfalse with the SampleModel of thesupplied Raster as argument. |
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