下面列出了java.awt.color.ColorSpace#TYPE_GRAY 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Return the type given the number of components.
*
* @param numComponents The number of components in the
* <code>ColorSpace</code>.
* @exception IllegalArgumentException if <code>numComponents</code>
* is less than 1.
*/
private static int getType(int numComponents) {
if(numComponents < 1) {
throw new IllegalArgumentException("numComponents < 1!");
}
int type;
switch(numComponents) {
case 1:
type = ColorSpace.TYPE_GRAY;
break;
default:
// Based on the constant definitions TYPE_2CLR=12 through
// TYPE_FCLR=25. This will return unknown types for
// numComponents > 15.
type = numComponents + 10;
}
return type;
}
/**
* Given an image type, return the Adobe transform corresponding to
* that type, or ADOBE_IMPOSSIBLE if the image type is incompatible
* with an Adobe marker segment. If <code>input</code> is true, then
* the image type is considered before colorspace conversion.
*/
static int transformForType(ImageTypeSpecifier imageType, boolean input) {
int retval = ADOBE_IMPOSSIBLE;
ColorModel cm = imageType.getColorModel();
switch (cm.getColorSpace().getType()) {
case ColorSpace.TYPE_GRAY:
retval = ADOBE_UNKNOWN;
break;
case ColorSpace.TYPE_RGB:
retval = input ? ADOBE_YCC : ADOBE_UNKNOWN;
break;
case ColorSpace.TYPE_YCbCr:
retval = ADOBE_YCC;
break;
case ColorSpace.TYPE_CMYK:
retval = input ? ADOBE_YCCK : ADOBE_IMPOSSIBLE;
}
return retval;
}
/**
* Given an image type, return the Adobe transform corresponding to
* that type, or ADOBE_IMPOSSIBLE if the image type is incompatible
* with an Adobe marker segment. If <code>input</code> is true, then
* the image type is considered before colorspace conversion.
*/
static int transformForType(ImageTypeSpecifier imageType, boolean input) {
int retval = ADOBE_IMPOSSIBLE;
ColorModel cm = imageType.getColorModel();
switch (cm.getColorSpace().getType()) {
case ColorSpace.TYPE_GRAY:
retval = ADOBE_UNKNOWN;
break;
case ColorSpace.TYPE_RGB:
retval = input ? ADOBE_YCC : ADOBE_UNKNOWN;
break;
case ColorSpace.TYPE_YCbCr:
retval = ADOBE_YCC;
break;
case ColorSpace.TYPE_CMYK:
retval = input ? ADOBE_YCCK : ADOBE_IMPOSSIBLE;
}
return retval;
}
/**
* Given an image type, return the Adobe transform corresponding to
* that type, or ADOBE_IMPOSSIBLE if the image type is incompatible
* with an Adobe marker segment. If <code>input</code> is true, then
* the image type is considered before colorspace conversion.
*/
static int transformForType(ImageTypeSpecifier imageType, boolean input) {
int retval = ADOBE_IMPOSSIBLE;
ColorModel cm = imageType.getColorModel();
switch (cm.getColorSpace().getType()) {
case ColorSpace.TYPE_GRAY:
retval = ADOBE_UNKNOWN;
break;
case ColorSpace.TYPE_RGB:
retval = input ? ADOBE_YCC : ADOBE_UNKNOWN;
break;
case ColorSpace.TYPE_YCbCr:
retval = ADOBE_YCC;
break;
case ColorSpace.TYPE_CMYK:
retval = input ? ADOBE_YCCK : ADOBE_IMPOSSIBLE;
}
return retval;
}
JFIFExtensionMarkerSegment(BufferedImage thumbnail)
throws IllegalThumbException {
super(JPEG.APP0);
ColorModel cm = thumbnail.getColorModel();
int csType = cm.getColorSpace().getType();
if (cm.hasAlpha()) {
throw new IllegalThumbException();
}
if (cm instanceof IndexColorModel) {
code = THUMB_PALETTE;
thumb = new JFIFThumbPalette(thumbnail);
} else if (csType == ColorSpace.TYPE_RGB) {
code = THUMB_RGB;
thumb = new JFIFThumbRGB(thumbnail);
} else if (csType == ColorSpace.TYPE_GRAY) {
code = THUMB_JPEG;
thumb = new JFIFThumbJPEG(thumbnail);
} else {
throw new IllegalThumbException();
}
}
public boolean isGrayscale(final BufferedImage src) {
final int width = src.getWidth();
final int height = src.getHeight();
if (ColorSpace.TYPE_GRAY == src.getColorModel().getColorSpace().getType()) {
return true;
}
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
final int argb = src.getRGB(x, y);
final int red = 0xff & (argb >> 16);
final int green = 0xff & (argb >> 8);
final int blue = 0xff & (argb >> 0);
if (red != green || red != blue) {
return false;
}
}
}
return true;
}
protected void compareImages(BufferedImage src, BufferedImage dst) {
ColorSpace srcCS = src.getColorModel().getColorSpace();
ColorSpace dstCS = dst.getColorModel().getColorSpace();
if (!srcCS.equals(dstCS) && srcCS.getType() == ColorSpace.TYPE_GRAY) {
System.out.println("Workaround color difference with GRAY.");
BufferedImage tmp =
new BufferedImage(src.getWidth(), src.getHeight(),
BufferedImage.TYPE_INT_RGB);
Graphics g = tmp.createGraphics();
g.drawImage(src, 0, 0, null);
src = tmp;
}
int y = h / 2;
for (int i = 0; i < colors.length; i++) {
int x = dx * i + dx / 2;
int srcRgb = src.getRGB(x, y);
int dstRgb = dst.getRGB(x, y);
if (srcRgb != dstRgb) {
throw new RuntimeException("Test failed due to color difference: " +
"src_pixel=" + Integer.toHexString(srcRgb) +
"dst_pixel=" + Integer.toHexString(dstRgb));
}
}
}
JFIFExtensionMarkerSegment(BufferedImage thumbnail)
throws IllegalThumbException {
super(JPEG.APP0);
ColorModel cm = thumbnail.getColorModel();
int csType = cm.getColorSpace().getType();
if (cm.hasAlpha()) {
throw new IllegalThumbException();
}
if (cm instanceof IndexColorModel) {
code = THUMB_PALETTE;
thumb = new JFIFThumbPalette(thumbnail);
} else if (csType == ColorSpace.TYPE_RGB) {
code = THUMB_RGB;
thumb = new JFIFThumbRGB(thumbnail);
} else if (csType == ColorSpace.TYPE_GRAY) {
code = THUMB_JPEG;
thumb = new JFIFThumbJPEG(thumbnail);
} else {
throw new IllegalThumbException();
}
}
private int getDestCSType(ImageTypeSpecifier destType) {
ColorModel cm = destType.getColorModel();
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
int retval = JPEG.JCS_UNKNOWN;
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
retval = JPEG.JCS_GRAYSCALE;
break;
case ColorSpace.TYPE_RGB:
if (alpha) {
retval = JPEG.JCS_RGBA;
} else {
retval = JPEG.JCS_RGB;
}
break;
case ColorSpace.TYPE_YCbCr:
if (alpha) {
retval = JPEG.JCS_YCbCrA;
} else {
retval = JPEG.JCS_YCbCr;
}
break;
case ColorSpace.TYPE_3CLR:
if (cs == JPEG.JCS.getYCC()) {
if (alpha) {
retval = JPEG.JCS_YCCA;
} else {
retval = JPEG.JCS_YCC;
}
}
case ColorSpace.TYPE_CMYK:
retval = JPEG.JCS_CMYK;
break;
}
return retval;
}
private int getSrcCSType(ColorModel cm) {
int retval = JPEG.JCS_UNKNOWN;
if (cm != null) {
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
retval = JPEG.JCS_GRAYSCALE;
break;
case ColorSpace.TYPE_RGB:
if (alpha) {
retval = JPEG.JCS_RGBA;
} else {
retval = JPEG.JCS_RGB;
}
break;
case ColorSpace.TYPE_YCbCr:
if (alpha) {
retval = JPEG.JCS_YCbCrA;
} else {
retval = JPEG.JCS_YCbCr;
}
break;
case ColorSpace.TYPE_3CLR:
if (cs == JPEG.JCS.getYCC()) {
if (alpha) {
retval = JPEG.JCS_YCCA;
} else {
retval = JPEG.JCS_YCC;
}
}
case ColorSpace.TYPE_CMYK:
retval = JPEG.JCS_CMYK;
break;
}
}
return retval;
}
/**************************** RescaleOp support *****************************/
public static boolean isRescaleOpValid(RescaleOp rop,
BufferedImage srcImg)
{
int numFactors = rop.getNumFactors();
ColorModel srcCM = srcImg.getColorModel();
if (srcCM instanceof IndexColorModel) {
throw new
IllegalArgumentException("Rescaling cannot be "+
"performed on an indexed image");
}
if (numFactors != 1 &&
numFactors != srcCM.getNumColorComponents() &&
numFactors != srcCM.getNumComponents())
{
throw new IllegalArgumentException("Number of scaling constants "+
"does not equal the number of"+
" of color or color/alpha "+
" components");
}
int csType = srcCM.getColorSpace().getType();
if (csType != ColorSpace.TYPE_RGB &&
csType != ColorSpace.TYPE_GRAY)
{
// Not prepared to deal with other color spaces
return false;
}
if (numFactors == 2 || numFactors > 4) {
// Not really prepared to handle this at the native level, so...
return false;
}
return true;
}
private int getDefaultDestCSType(ColorModel cm) {
int retval = JPEG.JCS_UNKNOWN;
if (cm != null) {
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
retval = JPEG.JCS_GRAYSCALE;
break;
case ColorSpace.TYPE_RGB:
if (alpha) {
retval = JPEG.JCS_YCbCrA;
} else {
retval = JPEG.JCS_YCbCr;
}
break;
case ColorSpace.TYPE_YCbCr:
if (alpha) {
retval = JPEG.JCS_YCbCrA;
} else {
retval = JPEG.JCS_YCbCr;
}
break;
case ColorSpace.TYPE_3CLR:
if (cs == JPEG.JCS.getYCC()) {
if (alpha) {
retval = JPEG.JCS_YCCA;
} else {
retval = JPEG.JCS_YCC;
}
}
case ColorSpace.TYPE_CMYK:
retval = JPEG.JCS_YCCK;
break;
}
}
return retval;
}
private int getDefaultDestCSType(ColorModel cm) {
int retval = JPEG.JCS_UNKNOWN;
if (cm != null) {
boolean alpha = cm.hasAlpha();
ColorSpace cs = cm.getColorSpace();
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
retval = JPEG.JCS_GRAYSCALE;
break;
case ColorSpace.TYPE_RGB:
if (alpha) {
retval = JPEG.JCS_YCbCrA;
} else {
retval = JPEG.JCS_YCbCr;
}
break;
case ColorSpace.TYPE_YCbCr:
if (alpha) {
retval = JPEG.JCS_YCbCrA;
} else {
retval = JPEG.JCS_YCbCr;
}
break;
case ColorSpace.TYPE_3CLR:
if (cs == JPEG.JCS.getYCC()) {
if (alpha) {
retval = JPEG.JCS_YCCA;
} else {
retval = JPEG.JCS_YCC;
}
}
case ColorSpace.TYPE_CMYK:
retval = JPEG.JCS_YCCK;
break;
}
}
return retval;
}
private void setupLUTs() {
// REMIND: there is potential to accelerate sRGB, LinearRGB,
// LinearGray, ICCGray, and non-ICC Gray spaces with non-standard
// scaling, if that becomes important
//
// NOTE: The is_xxx_stdScale and nonStdScale booleans are provisionally
// set here when this method is called at construction time. These
// variables may be set again when initScale is called later.
// When setupLUTs returns, nonStdScale is true if (the transferType
// is not float or double) AND (some minimum ColorSpace component
// value is not 0.0 OR some maximum ColorSpace component value
// is not 1.0). This is correct for the calls to
// getNormalizedComponents(Object, float[], int) from initScale().
// initScale() may change the value nonStdScale based on the
// return value of getNormalizedComponents() - this will only
// happen if getNormalizedComponents() has been overridden by a
// subclass to make the mapping of min/max pixel sample values
// something different from min/max color component values.
if (is_sRGB) {
is_sRGB_stdScale = true;
nonStdScale = false;
} else if (ColorModel.isLinearRGBspace(colorSpace)) {
// Note that the built-in Linear RGB space has a normalized
// range of 0.0 - 1.0 for each coordinate. Usage of these
// LUTs makes that assumption.
is_LinearRGB_stdScale = true;
nonStdScale = false;
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getLinearRGB8TosRGB8LUT();
fromsRGB8LUT8 = ColorModel.getsRGB8ToLinearRGB8LUT();
} else {
tosRGB8LUT = ColorModel.getLinearRGB16TosRGB8LUT();
fromsRGB8LUT16 = ColorModel.getsRGB8ToLinearRGB16LUT();
}
} else if ((colorSpaceType == ColorSpace.TYPE_GRAY) &&
(colorSpace instanceof ICC_ColorSpace) &&
(colorSpace.getMinValue(0) == 0.0f) &&
(colorSpace.getMaxValue(0) == 1.0f)) {
// Note that a normalized range of 0.0 - 1.0 for the gray
// component is required, because usage of these LUTs makes
// that assumption.
ICC_ColorSpace ics = (ICC_ColorSpace) colorSpace;
is_ICCGray_stdScale = true;
nonStdScale = false;
fromsRGB8LUT16 = ColorModel.getsRGB8ToLinearRGB16LUT();
if (ColorModel.isLinearGRAYspace(ics)) {
is_LinearGray_stdScale = true;
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getGray8TosRGB8LUT(ics);
} else {
tosRGB8LUT = ColorModel.getGray16TosRGB8LUT(ics);
}
} else {
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getGray8TosRGB8LUT(ics);
fromLinearGray16ToOtherGray8LUT =
ColorModel.getLinearGray16ToOtherGray8LUT(ics);
} else {
tosRGB8LUT = ColorModel.getGray16TosRGB8LUT(ics);
fromLinearGray16ToOtherGray16LUT =
ColorModel.getLinearGray16ToOtherGray16LUT(ics);
}
}
} else if (needScaleInit) {
// if transferType is byte, ushort, int, or short and we
// don't already know the ColorSpace has minVlaue == 0.0f and
// maxValue == 1.0f for all components, we need to check that
// now and setup the min[] and diffMinMax[] arrays if necessary.
nonStdScale = false;
for (int i = 0; i < numColorComponents; i++) {
if ((colorSpace.getMinValue(i) != 0.0f) ||
(colorSpace.getMaxValue(i) != 1.0f)) {
nonStdScale = true;
break;
}
}
if (nonStdScale) {
min = new float[numColorComponents];
diffMinMax = new float[numColorComponents];
for (int i = 0; i < numColorComponents; i++) {
min[i] = colorSpace.getMinValue(i);
diffMinMax[i] = colorSpace.getMaxValue(i) - min[i];
}
}
}
}
/**
* Returns the color/alpha components for the specified pixel in the
* default RGB color model format. A color conversion is done if
* necessary. The pixel value is specified by an
* array of data elements of type <CODE>transferType</CODE> passed
* in as an object reference.
* The returned value is in a non pre-multiplied format. If
* the alpha is premultiplied, this method divides it out of the
* color components (if the alpha value is 0, the color values will be 0).
* Since <code>ComponentColorModel</code> can be subclassed,
* subclasses inherit the implementation of this method and if they
* don't override it then they throw an exception if they use an
* unsupported <code>transferType</code>.
*
* @param inData The pixel from which you want to get the color/alpha components,
* specified by an array of data elements of type <CODE>transferType</CODE>.
*
* @return The color/alpha components for the specified pixel, as an int.
*
* @throws ClassCastException If <CODE>inData</CODE> is not a primitive array
* of type <CODE>transferType</CODE>.
* @throws ArrayIndexOutOfBoundsException if <CODE>inData</CODE> is not
* large enough to hold a pixel value for this
* <CODE>ColorModel</CODE>.
* @throws UnsupportedOperationException If the transfer type of
* this <CODE>ComponentColorModel</CODE>
* is not one of the supported transfer types:
* <CODE>DataBuffer.TYPE_BYTE</CODE>, <CODE>DataBuffer.TYPE_USHORT</CODE>,
* <CODE>DataBuffer.TYPE_INT</CODE>, <CODE>DataBuffer.TYPE_SHORT</CODE>,
* <CODE>DataBuffer.TYPE_FLOAT</CODE>, or <CODE>DataBuffer.TYPE_DOUBLE</CODE>.
* @see ColorModel#getRGBdefault
*/
public int getRGB(Object inData) {
if (needScaleInit) {
initScale();
}
if (is_sRGB_stdScale || is_LinearRGB_stdScale) {
return (getAlpha(inData) << 24)
| (getRed(inData) << 16)
| (getGreen(inData) << 8)
| (getBlue(inData));
} else if (colorSpaceType == ColorSpace.TYPE_GRAY) {
int gray = getRed(inData); // Red sRGB component should equal
// green and blue components
return (getAlpha(inData) << 24)
| (gray << 16)
| (gray << 8)
| gray;
}
float[] norm = getNormalizedComponents(inData, null, 0);
// Note that getNormalizedComponents returns non-premult values
float[] rgb = colorSpace.toRGB(norm);
return (getAlpha(inData) << 24)
| (((int) (rgb[0] * 255.0f + 0.5f)) << 16)
| (((int) (rgb[1] * 255.0f + 0.5f)) << 8)
| (((int) (rgb[2] * 255.0f + 0.5f)) << 0);
}
/**
* Returns the color/alpha components for the specified pixel in the
* default RGB color model format. A color conversion is done if
* necessary. The pixel value is specified by an
* array of data elements of type <CODE>transferType</CODE> passed
* in as an object reference.
* The returned value is in a non pre-multiplied format. If
* the alpha is premultiplied, this method divides it out of the
* color components (if the alpha value is 0, the color values will be 0).
* Since <code>ComponentColorModel</code> can be subclassed,
* subclasses inherit the implementation of this method and if they
* don't override it then they throw an exception if they use an
* unsupported <code>transferType</code>.
*
* @param inData The pixel from which you want to get the color/alpha components,
* specified by an array of data elements of type <CODE>transferType</CODE>.
*
* @return The color/alpha components for the specified pixel, as an int.
*
* @throws ClassCastException If <CODE>inData</CODE> is not a primitive array
* of type <CODE>transferType</CODE>.
* @throws ArrayIndexOutOfBoundsException if <CODE>inData</CODE> is not
* large enough to hold a pixel value for this
* <CODE>ColorModel</CODE>.
* @throws UnsupportedOperationException If the transfer type of
* this <CODE>ComponentColorModel</CODE>
* is not one of the supported transfer types:
* <CODE>DataBuffer.TYPE_BYTE</CODE>, <CODE>DataBuffer.TYPE_USHORT</CODE>,
* <CODE>DataBuffer.TYPE_INT</CODE>, <CODE>DataBuffer.TYPE_SHORT</CODE>,
* <CODE>DataBuffer.TYPE_FLOAT</CODE>, or <CODE>DataBuffer.TYPE_DOUBLE</CODE>.
* @see ColorModel#getRGBdefault
*/
public int getRGB(Object inData) {
if (needScaleInit) {
initScale();
}
if (is_sRGB_stdScale || is_LinearRGB_stdScale) {
return (getAlpha(inData) << 24)
| (getRed(inData) << 16)
| (getGreen(inData) << 8)
| (getBlue(inData));
} else if (colorSpaceType == ColorSpace.TYPE_GRAY) {
int gray = getRed(inData); // Red sRGB component should equal
// green and blue components
return (getAlpha(inData) << 24)
| (gray << 16)
| (gray << 8)
| gray;
}
float[] norm = getNormalizedComponents(inData, null, 0);
// Note that getNormalizedComponents returns non-premult values
float[] rgb = colorSpace.toRGB(norm);
return (getAlpha(inData) << 24)
| (((int) (rgb[0] * 255.0f + 0.5f)) << 16)
| (((int) (rgb[1] * 255.0f + 0.5f)) << 8)
| (((int) (rgb[2] * 255.0f + 0.5f)) << 0);
}
public static SurfaceType getSurfaceType(X11GraphicsConfig gc,
int transparency,
boolean pixmapSurface)
{
boolean transparent = (transparency == Transparency.BITMASK);
SurfaceType sType;
ColorModel cm = gc.getColorModel();
switch (cm.getPixelSize()) {
case 24:
if (gc.getBitsPerPixel() == 24) {
if (cm instanceof DirectColorModel) {
// 4517321: We will always use ThreeByteBgr for 24 bpp
// surfaces, regardless of the pixel masks reported by
// X11. Despite ambiguity in the X11 spec in how 24 bpp
// surfaces are treated, it appears that the best
// SurfaceType for these configurations (including
// some Matrox Millenium and ATI Radeon boards) is
// ThreeByteBgr.
sType = transparent ? X11SurfaceData.ThreeByteBgrX11_BM : X11SurfaceData.ThreeByteBgrX11;
} else {
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth/cm combo: " +
cm.getPixelSize() +
", " + cm);
}
break;
}
// Fall through for 32 bit case
case 32:
if (cm instanceof DirectColorModel) {
if (((SunToolkit)java.awt.Toolkit.getDefaultToolkit()
).isTranslucencyCapable(gc) && !pixmapSurface)
{
sType = X11SurfaceData.IntArgbPreX11;
} else {
if (((DirectColorModel)cm).getRedMask() == 0xff0000) {
sType = transparent ? X11SurfaceData.IntRgbX11_BM :
X11SurfaceData.IntRgbX11;
} else {
sType = transparent ? X11SurfaceData.IntBgrX11_BM :
X11SurfaceData.IntBgrX11;
}
}
} else if (cm instanceof ComponentColorModel) {
sType = X11SurfaceData.FourByteAbgrPreX11;
} else {
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth/cm combo: " +
cm.getPixelSize() +
", " + cm);
}
break;
case 15:
sType = transparent ? X11SurfaceData.UShort555RgbX11_BM : X11SurfaceData.UShort555RgbX11;
break;
case 16:
if ((cm instanceof DirectColorModel) &&
(((DirectColorModel)cm).getGreenMask() == 0x3e0))
{
// fix for 4352984: Riva128 on Linux
sType = transparent ? X11SurfaceData.UShort555RgbX11_BM : X11SurfaceData.UShort555RgbX11;
} else {
sType = transparent ? X11SurfaceData.UShort565RgbX11_BM : X11SurfaceData.UShort565RgbX11;
}
break;
case 12:
if (cm instanceof IndexColorModel) {
sType = transparent ?
X11SurfaceData.UShortIndexedX11_BM :
X11SurfaceData.UShortIndexedX11;
} else {
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth: " +
cm.getPixelSize() +
" cm="+cm);
}
break;
case 8:
if (cm.getColorSpace().getType() == ColorSpace.TYPE_GRAY &&
cm instanceof ComponentColorModel) {
sType = transparent ? X11SurfaceData.ByteGrayX11_BM : X11SurfaceData.ByteGrayX11;
} else if (cm instanceof IndexColorModel &&
isOpaqueGray((IndexColorModel)cm)) {
sType = transparent ? X11SurfaceData.Index8GrayX11_BM : X11SurfaceData.Index8GrayX11;
} else {
sType = transparent ? X11SurfaceData.ByteIndexedX11_BM : X11SurfaceData.ByteIndexedOpaqueX11;
}
break;
default:
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth: " +
cm.getPixelSize());
}
return sType;
}
private void setupLUTs() {
// REMIND: there is potential to accelerate sRGB, LinearRGB,
// LinearGray, ICCGray, and non-ICC Gray spaces with non-standard
// scaling, if that becomes important
//
// NOTE: The is_xxx_stdScale and nonStdScale booleans are provisionally
// set here when this method is called at construction time. These
// variables may be set again when initScale is called later.
// When setupLUTs returns, nonStdScale is true if (the transferType
// is not float or double) AND (some minimum ColorSpace component
// value is not 0.0 OR some maximum ColorSpace component value
// is not 1.0). This is correct for the calls to
// getNormalizedComponents(Object, float[], int) from initScale().
// initScale() may change the value nonStdScale based on the
// return value of getNormalizedComponents() - this will only
// happen if getNormalizedComponents() has been overridden by a
// subclass to make the mapping of min/max pixel sample values
// something different from min/max color component values.
if (is_sRGB) {
is_sRGB_stdScale = true;
nonStdScale = false;
} else if (ColorModel.isLinearRGBspace(colorSpace)) {
// Note that the built-in Linear RGB space has a normalized
// range of 0.0 - 1.0 for each coordinate. Usage of these
// LUTs makes that assumption.
is_LinearRGB_stdScale = true;
nonStdScale = false;
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getLinearRGB8TosRGB8LUT();
fromsRGB8LUT8 = ColorModel.getsRGB8ToLinearRGB8LUT();
} else {
tosRGB8LUT = ColorModel.getLinearRGB16TosRGB8LUT();
fromsRGB8LUT16 = ColorModel.getsRGB8ToLinearRGB16LUT();
}
} else if ((colorSpaceType == ColorSpace.TYPE_GRAY) &&
(colorSpace instanceof ICC_ColorSpace) &&
(colorSpace.getMinValue(0) == 0.0f) &&
(colorSpace.getMaxValue(0) == 1.0f)) {
// Note that a normalized range of 0.0 - 1.0 for the gray
// component is required, because usage of these LUTs makes
// that assumption.
ICC_ColorSpace ics = (ICC_ColorSpace) colorSpace;
is_ICCGray_stdScale = true;
nonStdScale = false;
fromsRGB8LUT16 = ColorModel.getsRGB8ToLinearRGB16LUT();
if (ColorModel.isLinearGRAYspace(ics)) {
is_LinearGray_stdScale = true;
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getGray8TosRGB8LUT(ics);
} else {
tosRGB8LUT = ColorModel.getGray16TosRGB8LUT(ics);
}
} else {
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getGray8TosRGB8LUT(ics);
fromLinearGray16ToOtherGray8LUT =
ColorModel.getLinearGray16ToOtherGray8LUT(ics);
} else {
tosRGB8LUT = ColorModel.getGray16TosRGB8LUT(ics);
fromLinearGray16ToOtherGray16LUT =
ColorModel.getLinearGray16ToOtherGray16LUT(ics);
}
}
} else if (needScaleInit) {
// if transferType is byte, ushort, int, or short and we
// don't already know the ColorSpace has minVlaue == 0.0f and
// maxValue == 1.0f for all components, we need to check that
// now and setup the min[] and diffMinMax[] arrays if necessary.
nonStdScale = false;
for (int i = 0; i < numColorComponents; i++) {
if ((colorSpace.getMinValue(i) != 0.0f) ||
(colorSpace.getMaxValue(i) != 1.0f)) {
nonStdScale = true;
break;
}
}
if (nonStdScale) {
min = new float[numColorComponents];
diffMinMax = new float[numColorComponents];
for (int i = 0; i < numColorComponents; i++) {
min[i] = colorSpace.getMinValue(i);
diffMinMax[i] = colorSpace.getMaxValue(i) - min[i];
}
}
}
}
private void setupLUTs() {
// REMIND: there is potential to accelerate sRGB, LinearRGB,
// LinearGray, ICCGray, and non-ICC Gray spaces with non-standard
// scaling, if that becomes important
//
// NOTE: The is_xxx_stdScale and nonStdScale booleans are provisionally
// set here when this method is called at construction time. These
// variables may be set again when initScale is called later.
// When setupLUTs returns, nonStdScale is true if (the transferType
// is not float or double) AND (some minimum ColorSpace component
// value is not 0.0 OR some maximum ColorSpace component value
// is not 1.0). This is correct for the calls to
// getNormalizedComponents(Object, float[], int) from initScale().
// initScale() may change the value nonStdScale based on the
// return value of getNormalizedComponents() - this will only
// happen if getNormalizedComponents() has been overridden by a
// subclass to make the mapping of min/max pixel sample values
// something different from min/max color component values.
if (is_sRGB) {
is_sRGB_stdScale = true;
nonStdScale = false;
} else if (ColorModel.isLinearRGBspace(colorSpace)) {
// Note that the built-in Linear RGB space has a normalized
// range of 0.0 - 1.0 for each coordinate. Usage of these
// LUTs makes that assumption.
is_LinearRGB_stdScale = true;
nonStdScale = false;
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getLinearRGB8TosRGB8LUT();
fromsRGB8LUT8 = ColorModel.getsRGB8ToLinearRGB8LUT();
} else {
tosRGB8LUT = ColorModel.getLinearRGB16TosRGB8LUT();
fromsRGB8LUT16 = ColorModel.getsRGB8ToLinearRGB16LUT();
}
} else if ((colorSpaceType == ColorSpace.TYPE_GRAY) &&
(colorSpace instanceof ICC_ColorSpace) &&
(colorSpace.getMinValue(0) == 0.0f) &&
(colorSpace.getMaxValue(0) == 1.0f)) {
// Note that a normalized range of 0.0 - 1.0 for the gray
// component is required, because usage of these LUTs makes
// that assumption.
ICC_ColorSpace ics = (ICC_ColorSpace) colorSpace;
is_ICCGray_stdScale = true;
nonStdScale = false;
fromsRGB8LUT16 = ColorModel.getsRGB8ToLinearRGB16LUT();
if (ColorModel.isLinearGRAYspace(ics)) {
is_LinearGray_stdScale = true;
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getGray8TosRGB8LUT(ics);
} else {
tosRGB8LUT = ColorModel.getGray16TosRGB8LUT(ics);
}
} else {
if (transferType == DataBuffer.TYPE_BYTE) {
tosRGB8LUT = ColorModel.getGray8TosRGB8LUT(ics);
fromLinearGray16ToOtherGray8LUT =
ColorModel.getLinearGray16ToOtherGray8LUT(ics);
} else {
tosRGB8LUT = ColorModel.getGray16TosRGB8LUT(ics);
fromLinearGray16ToOtherGray16LUT =
ColorModel.getLinearGray16ToOtherGray16LUT(ics);
}
}
} else if (needScaleInit) {
// if transferType is byte, ushort, int, or short and we
// don't already know the ColorSpace has minVlaue == 0.0f and
// maxValue == 1.0f for all components, we need to check that
// now and setup the min[] and diffMinMax[] arrays if necessary.
nonStdScale = false;
for (int i = 0; i < numColorComponents; i++) {
if ((colorSpace.getMinValue(i) != 0.0f) ||
(colorSpace.getMaxValue(i) != 1.0f)) {
nonStdScale = true;
break;
}
}
if (nonStdScale) {
min = new float[numColorComponents];
diffMinMax = new float[numColorComponents];
for (int i = 0; i < numColorComponents; i++) {
min[i] = colorSpace.getMinValue(i);
diffMinMax[i] = colorSpace.getMaxValue(i) - min[i];
}
}
}
}
public static SurfaceType getSurfaceType(X11GraphicsConfig gc,
int transparency,
boolean pixmapSurface)
{
boolean transparent = (transparency == Transparency.BITMASK);
SurfaceType sType;
ColorModel cm = gc.getColorModel();
switch (cm.getPixelSize()) {
case 24:
if (gc.getBitsPerPixel() == 24) {
if (cm instanceof DirectColorModel) {
// 4517321: We will always use ThreeByteBgr for 24 bpp
// surfaces, regardless of the pixel masks reported by
// X11. Despite ambiguity in the X11 spec in how 24 bpp
// surfaces are treated, it appears that the best
// SurfaceType for these configurations (including
// some Matrox Millenium and ATI Radeon boards) is
// ThreeByteBgr.
sType = transparent ? X11SurfaceData.ThreeByteBgrX11_BM : X11SurfaceData.ThreeByteBgrX11;
} else {
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth/cm combo: " +
cm.getPixelSize() +
", " + cm);
}
break;
}
// Fall through for 32 bit case
case 32:
if (cm instanceof DirectColorModel) {
if (((SunToolkit)java.awt.Toolkit.getDefaultToolkit()
).isTranslucencyCapable(gc) && !pixmapSurface)
{
sType = X11SurfaceData.IntArgbPreX11;
} else {
if (((DirectColorModel)cm).getRedMask() == 0xff0000) {
sType = transparent ? X11SurfaceData.IntRgbX11_BM :
X11SurfaceData.IntRgbX11;
} else {
sType = transparent ? X11SurfaceData.IntBgrX11_BM :
X11SurfaceData.IntBgrX11;
}
}
} else if (cm instanceof ComponentColorModel) {
sType = X11SurfaceData.FourByteAbgrPreX11;
} else {
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth/cm combo: " +
cm.getPixelSize() +
", " + cm);
}
break;
case 15:
sType = transparent ? X11SurfaceData.UShort555RgbX11_BM : X11SurfaceData.UShort555RgbX11;
break;
case 16:
if ((cm instanceof DirectColorModel) &&
(((DirectColorModel)cm).getGreenMask() == 0x3e0))
{
// fix for 4352984: Riva128 on Linux
sType = transparent ? X11SurfaceData.UShort555RgbX11_BM : X11SurfaceData.UShort555RgbX11;
} else {
sType = transparent ? X11SurfaceData.UShort565RgbX11_BM : X11SurfaceData.UShort565RgbX11;
}
break;
case 12:
if (cm instanceof IndexColorModel) {
sType = transparent ?
X11SurfaceData.UShortIndexedX11_BM :
X11SurfaceData.UShortIndexedX11;
} else {
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth: " +
cm.getPixelSize() +
" cm="+cm);
}
break;
case 8:
if (cm.getColorSpace().getType() == ColorSpace.TYPE_GRAY &&
cm instanceof ComponentColorModel) {
sType = transparent ? X11SurfaceData.ByteGrayX11_BM : X11SurfaceData.ByteGrayX11;
} else if (cm instanceof IndexColorModel &&
isOpaqueGray((IndexColorModel)cm)) {
sType = transparent ? X11SurfaceData.Index8GrayX11_BM : X11SurfaceData.Index8GrayX11;
} else {
sType = transparent ? X11SurfaceData.ByteIndexedX11_BM : X11SurfaceData.ByteIndexedOpaqueX11;
}
break;
default:
throw new sun.java2d.InvalidPipeException("Unsupported bit " +
"depth: " +
cm.getPixelSize());
}
return sType;
}