use of java.awt.image.IndexColorModel in project jdk8u_jdk by JetBrains.
the class PNGImageWriterSpi method canEncodeImage.
public boolean canEncodeImage(ImageTypeSpecifier type) {
SampleModel sampleModel = type.getSampleModel();
ColorModel colorModel = type.getColorModel();
// Find the maximum bit depth across all channels
int[] sampleSize = sampleModel.getSampleSize();
int bitDepth = sampleSize[0];
for (int i = 1; i < sampleSize.length; i++) {
if (sampleSize[i] > bitDepth) {
bitDepth = sampleSize[i];
}
}
// Ensure bitDepth is between 1 and 16
if (bitDepth < 1 || bitDepth > 16) {
return false;
}
// Check number of bands, alpha
int numBands = sampleModel.getNumBands();
if (numBands < 1 || numBands > 4) {
return false;
}
boolean hasAlpha = colorModel.hasAlpha();
// the check below to fail and return false.
if (colorModel instanceof IndexColorModel) {
return true;
}
if ((numBands == 1 || numBands == 3) && hasAlpha) {
return false;
}
if ((numBands == 2 || numBands == 4) && !hasAlpha) {
return false;
}
return true;
}
use of java.awt.image.IndexColorModel in project jdk8u_jdk by JetBrains.
the class PNGMetadata method initialize.
/**
* Sets the IHDR_bitDepth and IHDR_colorType variables.
* The <code>numBands</code> parameter is necessary since
* we may only be writing a subset of the image bands.
*/
public void initialize(ImageTypeSpecifier imageType, int numBands) {
ColorModel colorModel = imageType.getColorModel();
SampleModel sampleModel = imageType.getSampleModel();
// Initialize IHDR_bitDepth
int[] sampleSize = sampleModel.getSampleSize();
int bitDepth = sampleSize[0];
// Fixes bug 4413109
for (int i = 1; i < sampleSize.length; i++) {
if (sampleSize[i] > bitDepth) {
bitDepth = sampleSize[i];
}
}
// Multi-channel images must have a bit depth of 8 or 16
if (sampleSize.length > 1 && bitDepth < 8) {
bitDepth = 8;
}
// Round bit depth up to a power of 2
if (bitDepth > 2 && bitDepth < 4) {
bitDepth = 4;
} else if (bitDepth > 4 && bitDepth < 8) {
bitDepth = 8;
} else if (bitDepth > 8 && bitDepth < 16) {
bitDepth = 16;
} else if (bitDepth > 16) {
throw new RuntimeException("bitDepth > 16!");
}
IHDR_bitDepth = bitDepth;
// Initialize IHDR_colorType
if (colorModel instanceof IndexColorModel) {
IndexColorModel icm = (IndexColorModel) colorModel;
int size = icm.getMapSize();
byte[] reds = new byte[size];
icm.getReds(reds);
byte[] greens = new byte[size];
icm.getGreens(greens);
byte[] blues = new byte[size];
icm.getBlues(blues);
// Determine whether the color tables are actually a gray ramp
// if the color type has not been set previously
boolean isGray = false;
if (!IHDR_present || (IHDR_colorType != PNGImageReader.PNG_COLOR_PALETTE)) {
isGray = true;
int scale = 255 / ((1 << IHDR_bitDepth) - 1);
for (int i = 0; i < size; i++) {
byte red = reds[i];
if ((red != (byte) (i * scale)) || (red != greens[i]) || (red != blues[i])) {
isGray = false;
break;
}
}
}
// Determine whether transparency exists
boolean hasAlpha = colorModel.hasAlpha();
byte[] alpha = null;
if (hasAlpha) {
alpha = new byte[size];
icm.getAlphas(alpha);
}
if (isGray && hasAlpha && (bitDepth == 8 || bitDepth == 16)) {
IHDR_colorType = PNGImageReader.PNG_COLOR_GRAY_ALPHA;
} else if (isGray && !hasAlpha) {
IHDR_colorType = PNGImageReader.PNG_COLOR_GRAY;
} else {
IHDR_colorType = PNGImageReader.PNG_COLOR_PALETTE;
PLTE_present = true;
PLTE_order = null;
PLTE_red = (byte[]) reds.clone();
PLTE_green = (byte[]) greens.clone();
PLTE_blue = (byte[]) blues.clone();
if (hasAlpha) {
tRNS_present = true;
tRNS_colorType = PNGImageReader.PNG_COLOR_PALETTE;
PLTE_order = new int[alpha.length];
// Reorder the palette so that non-opaque entries
// come first. Since the tRNS chunk does not have
// to store trailing 255's, this can save a
// considerable amount of space when encoding
// images with only one transparent pixel value,
// e.g., images from GIF sources.
byte[] newAlpha = new byte[alpha.length];
// Scan for non-opaque entries and assign them
// positions starting at 0.
int newIndex = 0;
for (int i = 0; i < alpha.length; i++) {
if (alpha[i] != (byte) 255) {
PLTE_order[i] = newIndex;
newAlpha[newIndex] = alpha[i];
++newIndex;
}
}
int numTransparent = newIndex;
// positions following the non-opaque entries.
for (int i = 0; i < alpha.length; i++) {
if (alpha[i] == (byte) 255) {
PLTE_order[i] = newIndex++;
}
}
// Reorder the palettes
byte[] oldRed = PLTE_red;
byte[] oldGreen = PLTE_green;
byte[] oldBlue = PLTE_blue;
// All have the same length
int len = oldRed.length;
PLTE_red = new byte[len];
PLTE_green = new byte[len];
PLTE_blue = new byte[len];
for (int i = 0; i < len; i++) {
PLTE_red[PLTE_order[i]] = oldRed[i];
PLTE_green[PLTE_order[i]] = oldGreen[i];
PLTE_blue[PLTE_order[i]] = oldBlue[i];
}
// Copy only the transparent entries into tRNS_alpha
tRNS_alpha = new byte[numTransparent];
System.arraycopy(newAlpha, 0, tRNS_alpha, 0, numTransparent);
}
}
} else {
if (numBands == 1) {
IHDR_colorType = PNGImageReader.PNG_COLOR_GRAY;
} else if (numBands == 2) {
IHDR_colorType = PNGImageReader.PNG_COLOR_GRAY_ALPHA;
} else if (numBands == 3) {
IHDR_colorType = PNGImageReader.PNG_COLOR_RGB;
} else if (numBands == 4) {
IHDR_colorType = PNGImageReader.PNG_COLOR_RGB_ALPHA;
} else {
throw new RuntimeException("Number of bands not 1-4!");
}
}
IHDR_present = true;
}
use of java.awt.image.IndexColorModel in project jdk8u_jdk by JetBrains.
the class BMPImageWriter method write.
public void write(IIOMetadata streamMetadata, IIOImage image, ImageWriteParam param) throws IOException {
if (stream == null) {
throw new IllegalStateException(I18N.getString("BMPImageWriter7"));
}
if (image == null) {
throw new IllegalArgumentException(I18N.getString("BMPImageWriter8"));
}
clearAbortRequest();
processImageStarted(0);
if (param == null)
param = getDefaultWriteParam();
BMPImageWriteParam bmpParam = (BMPImageWriteParam) param;
// Default is using 24 bits per pixel.
int bitsPerPixel = 24;
boolean isPalette = false;
int paletteEntries = 0;
IndexColorModel icm = null;
RenderedImage input = null;
Raster inputRaster = null;
boolean writeRaster = image.hasRaster();
Rectangle sourceRegion = param.getSourceRegion();
SampleModel sampleModel = null;
ColorModel colorModel = null;
compImageSize = 0;
if (writeRaster) {
inputRaster = image.getRaster();
sampleModel = inputRaster.getSampleModel();
colorModel = ImageUtil.createColorModel(null, sampleModel);
if (sourceRegion == null)
sourceRegion = inputRaster.getBounds();
else
sourceRegion = sourceRegion.intersection(inputRaster.getBounds());
} else {
input = image.getRenderedImage();
sampleModel = input.getSampleModel();
colorModel = input.getColorModel();
Rectangle rect = new Rectangle(input.getMinX(), input.getMinY(), input.getWidth(), input.getHeight());
if (sourceRegion == null)
sourceRegion = rect;
else
sourceRegion = sourceRegion.intersection(rect);
}
IIOMetadata imageMetadata = image.getMetadata();
BMPMetadata bmpImageMetadata = null;
if (imageMetadata != null && imageMetadata instanceof BMPMetadata) {
bmpImageMetadata = (BMPMetadata) imageMetadata;
} else {
ImageTypeSpecifier imageType = new ImageTypeSpecifier(colorModel, sampleModel);
bmpImageMetadata = (BMPMetadata) getDefaultImageMetadata(imageType, param);
}
if (sourceRegion.isEmpty())
throw new RuntimeException(I18N.getString("BMPImageWrite0"));
int scaleX = param.getSourceXSubsampling();
int scaleY = param.getSourceYSubsampling();
int xOffset = param.getSubsamplingXOffset();
int yOffset = param.getSubsamplingYOffset();
// cache the data type;
int dataType = sampleModel.getDataType();
sourceRegion.translate(xOffset, yOffset);
sourceRegion.width -= xOffset;
sourceRegion.height -= yOffset;
int minX = sourceRegion.x / scaleX;
int minY = sourceRegion.y / scaleY;
w = (sourceRegion.width + scaleX - 1) / scaleX;
h = (sourceRegion.height + scaleY - 1) / scaleY;
xOffset = sourceRegion.x % scaleX;
yOffset = sourceRegion.y % scaleY;
Rectangle destinationRegion = new Rectangle(minX, minY, w, h);
boolean noTransform = destinationRegion.equals(sourceRegion);
// Raw data can only handle bytes, everything greater must be ASCII.
int[] sourceBands = param.getSourceBands();
boolean noSubband = true;
int numBands = sampleModel.getNumBands();
if (sourceBands != null) {
sampleModel = sampleModel.createSubsetSampleModel(sourceBands);
colorModel = null;
noSubband = false;
numBands = sampleModel.getNumBands();
} else {
sourceBands = new int[numBands];
for (int i = 0; i < numBands; i++) sourceBands[i] = i;
}
int[] bandOffsets = null;
boolean bgrOrder = true;
if (sampleModel instanceof ComponentSampleModel) {
bandOffsets = ((ComponentSampleModel) sampleModel).getBandOffsets();
if (sampleModel instanceof BandedSampleModel) {
// for images with BandedSampleModel we can not work
// with raster directly and must use writePixels()
bgrOrder = false;
} else {
// In any other case we must use writePixels()
for (int i = 0; i < bandOffsets.length; i++) {
bgrOrder &= (bandOffsets[i] == (bandOffsets.length - i - 1));
}
}
} else {
if (sampleModel instanceof SinglePixelPackedSampleModel) {
// BugId 4892214: we can not work with raster directly
// if image have different color order than RGB.
// We should use writePixels() for such images.
int[] bitOffsets = ((SinglePixelPackedSampleModel) sampleModel).getBitOffsets();
for (int i = 0; i < bitOffsets.length - 1; i++) {
bgrOrder &= bitOffsets[i] > bitOffsets[i + 1];
}
}
}
if (bandOffsets == null) {
// we will use getPixels() to extract pixel data for writePixels()
// Please note that getPixels() provides rgb bands order.
bandOffsets = new int[numBands];
for (int i = 0; i < numBands; i++) bandOffsets[i] = i;
}
noTransform &= bgrOrder;
int[] sampleSize = sampleModel.getSampleSize();
//XXX: check more
// Number of bytes that a scanline for the image written out will have.
int destScanlineBytes = w * numBands;
switch(bmpParam.getCompressionMode()) {
case ImageWriteParam.MODE_EXPLICIT:
compressionType = BMPCompressionTypes.getType(bmpParam.getCompressionType());
break;
case ImageWriteParam.MODE_COPY_FROM_METADATA:
compressionType = bmpImageMetadata.compression;
break;
case ImageWriteParam.MODE_DEFAULT:
compressionType = getPreferredCompressionType(colorModel, sampleModel);
break;
default:
// ImageWriteParam.MODE_DISABLED:
compressionType = BI_RGB;
}
if (!canEncodeImage(compressionType, colorModel, sampleModel)) {
throw new IOException("Image can not be encoded with compression type " + BMPCompressionTypes.getName(compressionType));
}
byte[] r = null, g = null, b = null, a = null;
if (compressionType == BI_BITFIELDS) {
bitsPerPixel = DataBuffer.getDataTypeSize(sampleModel.getDataType());
if (bitsPerPixel != 16 && bitsPerPixel != 32) {
// we should use 32bpp images in case of BI_BITFIELD
// compression to avoid color conversion artefacts
bitsPerPixel = 32;
// Setting this flag to false ensures that generic
// writePixels() will be used to store image data
noTransform = false;
}
destScanlineBytes = w * bitsPerPixel + 7 >> 3;
isPalette = true;
paletteEntries = 3;
r = new byte[paletteEntries];
g = new byte[paletteEntries];
b = new byte[paletteEntries];
a = new byte[paletteEntries];
int rmask = 0x00ff0000;
int gmask = 0x0000ff00;
int bmask = 0x000000ff;
if (bitsPerPixel == 16) {
/* NB: canEncodeImage() ensures we have image of
* either USHORT_565_RGB or USHORT_555_RGB type here.
* Technically, it should work for other direct color
* model types but it might be non compatible with win98
* and friends.
*/
if (colorModel instanceof DirectColorModel) {
DirectColorModel dcm = (DirectColorModel) colorModel;
rmask = dcm.getRedMask();
gmask = dcm.getGreenMask();
bmask = dcm.getBlueMask();
} else {
// an exception related to unsupported image format
throw new IOException("Image can not be encoded with " + "compression type " + BMPCompressionTypes.getName(compressionType));
}
}
writeMaskToPalette(rmask, 0, r, g, b, a);
writeMaskToPalette(gmask, 1, r, g, b, a);
writeMaskToPalette(bmask, 2, r, g, b, a);
if (!noTransform) {
// prepare info for writePixels procedure
bitMasks = new int[3];
bitMasks[0] = rmask;
bitMasks[1] = gmask;
bitMasks[2] = bmask;
bitPos = new int[3];
bitPos[0] = firstLowBit(rmask);
bitPos[1] = firstLowBit(gmask);
bitPos[2] = firstLowBit(bmask);
}
if (colorModel instanceof IndexColorModel) {
icm = (IndexColorModel) colorModel;
}
} else {
// handle BI_RGB compression
if (colorModel instanceof IndexColorModel) {
isPalette = true;
icm = (IndexColorModel) colorModel;
paletteEntries = icm.getMapSize();
if (paletteEntries <= 2) {
bitsPerPixel = 1;
destScanlineBytes = w + 7 >> 3;
} else if (paletteEntries <= 16) {
bitsPerPixel = 4;
destScanlineBytes = w + 1 >> 1;
} else if (paletteEntries <= 256) {
bitsPerPixel = 8;
} else {
// Cannot be written as a Palette image. So write out as
// 24 bit image.
bitsPerPixel = 24;
isPalette = false;
paletteEntries = 0;
destScanlineBytes = w * 3;
}
if (isPalette == true) {
r = new byte[paletteEntries];
g = new byte[paletteEntries];
b = new byte[paletteEntries];
a = new byte[paletteEntries];
icm.getAlphas(a);
icm.getReds(r);
icm.getGreens(g);
icm.getBlues(b);
}
} else {
// Grey scale images
if (numBands == 1) {
isPalette = true;
paletteEntries = 256;
bitsPerPixel = sampleSize[0];
destScanlineBytes = (w * bitsPerPixel + 7 >> 3);
r = new byte[256];
g = new byte[256];
b = new byte[256];
a = new byte[256];
for (int i = 0; i < 256; i++) {
r[i] = (byte) i;
g[i] = (byte) i;
b[i] = (byte) i;
a[i] = (byte) 255;
}
} else {
if (sampleModel instanceof SinglePixelPackedSampleModel && noSubband) {
/* NB: the actual pixel size can be smaller than
* size of used DataBuffer element.
* For example: in case of TYPE_INT_RGB actual pixel
* size is 24 bits, but size of DataBuffere element
* is 32 bits
*/
int[] sample_sizes = sampleModel.getSampleSize();
bitsPerPixel = 0;
for (int size : sample_sizes) {
bitsPerPixel += size;
}
bitsPerPixel = roundBpp(bitsPerPixel);
if (bitsPerPixel != DataBuffer.getDataTypeSize(sampleModel.getDataType())) {
noTransform = false;
}
destScanlineBytes = w * bitsPerPixel + 7 >> 3;
}
}
}
}
// actual writing of image data
int fileSize = 0;
int offset = 0;
int headerSize = 0;
int imageSize = 0;
int xPelsPerMeter = 0;
int yPelsPerMeter = 0;
int colorsUsed = 0;
int colorsImportant = paletteEntries;
// Calculate padding for each scanline
int padding = destScanlineBytes % 4;
if (padding != 0) {
padding = 4 - padding;
}
// FileHeader is 14 bytes, BitmapHeader is 40 bytes,
// add palette size and that is where the data will begin
offset = 54 + paletteEntries * 4;
imageSize = (destScanlineBytes + padding) * h;
fileSize = imageSize + offset;
headerSize = 40;
long headPos = stream.getStreamPosition();
writeFileHeader(fileSize, offset);
/* According to MSDN description, the top-down image layout
* is allowed only if compression type is BI_RGB or BI_BITFIELDS.
* Images with any other compression type must be wrote in the
* bottom-up layout.
*/
if (compressionType == BI_RGB || compressionType == BI_BITFIELDS) {
isTopDown = bmpParam.isTopDown();
} else {
isTopDown = false;
}
writeInfoHeader(headerSize, bitsPerPixel);
// compression
stream.writeInt(compressionType);
// imageSize
stream.writeInt(imageSize);
// xPelsPerMeter
stream.writeInt(xPelsPerMeter);
// yPelsPerMeter
stream.writeInt(yPelsPerMeter);
// Colors Used
stream.writeInt(colorsUsed);
// Colors Important
stream.writeInt(colorsImportant);
// palette
if (isPalette == true) {
// write palette
if (compressionType == BI_BITFIELDS) {
// write masks for red, green and blue components.
for (int i = 0; i < 3; i++) {
int mask = (a[i] & 0xFF) + ((r[i] & 0xFF) * 0x100) + ((g[i] & 0xFF) * 0x10000) + ((b[i] & 0xFF) * 0x1000000);
stream.writeInt(mask);
}
} else {
for (int i = 0; i < paletteEntries; i++) {
stream.writeByte(b[i]);
stream.writeByte(g[i]);
stream.writeByte(r[i]);
stream.writeByte(a[i]);
}
}
}
// Writing of actual image data
int scanlineBytes = w * numBands;
// Buffer for up to 8 rows of pixels
int[] pixels = new int[scanlineBytes * scaleX];
// Also create a buffer to hold one line of the data
// to be written to the file, so we can use array writes.
bpixels = new byte[destScanlineBytes];
int l;
if (compressionType == BI_JPEG || compressionType == BI_PNG) {
// prepare embedded buffer
embedded_stream = new ByteArrayOutputStream();
writeEmbedded(image, bmpParam);
// update the file/image Size
embedded_stream.flush();
imageSize = embedded_stream.size();
long endPos = stream.getStreamPosition();
fileSize = (int) (offset + imageSize);
stream.seek(headPos);
writeSize(fileSize, 2);
stream.seek(headPos);
writeSize(imageSize, 34);
stream.seek(endPos);
stream.write(embedded_stream.toByteArray());
embedded_stream = null;
if (abortRequested()) {
processWriteAborted();
} else {
processImageComplete();
stream.flushBefore(stream.getStreamPosition());
}
return;
}
int maxBandOffset = bandOffsets[0];
for (int i = 1; i < bandOffsets.length; i++) if (bandOffsets[i] > maxBandOffset)
maxBandOffset = bandOffsets[i];
int[] pixel = new int[maxBandOffset + 1];
int destScanlineLength = destScanlineBytes;
if (noTransform && noSubband) {
destScanlineLength = destScanlineBytes / (DataBuffer.getDataTypeSize(dataType) >> 3);
}
for (int i = 0; i < h; i++) {
if (abortRequested()) {
break;
}
int row = minY + i;
if (!isTopDown)
row = minY + h - i - 1;
// Get the pixels
Raster src = inputRaster;
Rectangle srcRect = new Rectangle(minX * scaleX + xOffset, row * scaleY + yOffset, (w - 1) * scaleX + 1, 1);
if (!writeRaster)
src = input.getData(srcRect);
if (noTransform && noSubband) {
SampleModel sm = src.getSampleModel();
int pos = 0;
int startX = srcRect.x - src.getSampleModelTranslateX();
int startY = srcRect.y - src.getSampleModelTranslateY();
if (sm instanceof ComponentSampleModel) {
ComponentSampleModel csm = (ComponentSampleModel) sm;
pos = csm.getOffset(startX, startY, 0);
for (int nb = 1; nb < csm.getNumBands(); nb++) {
if (pos > csm.getOffset(startX, startY, nb)) {
pos = csm.getOffset(startX, startY, nb);
}
}
} else if (sm instanceof MultiPixelPackedSampleModel) {
MultiPixelPackedSampleModel mppsm = (MultiPixelPackedSampleModel) sm;
pos = mppsm.getOffset(startX, startY);
} else if (sm instanceof SinglePixelPackedSampleModel) {
SinglePixelPackedSampleModel sppsm = (SinglePixelPackedSampleModel) sm;
pos = sppsm.getOffset(startX, startY);
}
if (compressionType == BI_RGB || compressionType == BI_BITFIELDS) {
switch(dataType) {
case DataBuffer.TYPE_BYTE:
byte[] bdata = ((DataBufferByte) src.getDataBuffer()).getData();
stream.write(bdata, pos, destScanlineLength);
break;
case DataBuffer.TYPE_SHORT:
short[] sdata = ((DataBufferShort) src.getDataBuffer()).getData();
stream.writeShorts(sdata, pos, destScanlineLength);
break;
case DataBuffer.TYPE_USHORT:
short[] usdata = ((DataBufferUShort) src.getDataBuffer()).getData();
stream.writeShorts(usdata, pos, destScanlineLength);
break;
case DataBuffer.TYPE_INT:
int[] idata = ((DataBufferInt) src.getDataBuffer()).getData();
stream.writeInts(idata, pos, destScanlineLength);
break;
}
for (int k = 0; k < padding; k++) {
stream.writeByte(0);
}
} else if (compressionType == BI_RLE4) {
if (bpixels == null || bpixels.length < scanlineBytes)
bpixels = new byte[scanlineBytes];
src.getPixels(srcRect.x, srcRect.y, srcRect.width, srcRect.height, pixels);
for (int h = 0; h < scanlineBytes; h++) {
bpixels[h] = (byte) pixels[h];
}
encodeRLE4(bpixels, scanlineBytes);
} else if (compressionType == BI_RLE8) {
//System.arraycopy(bdata, pos, bpixels, 0, scanlineBytes);
if (bpixels == null || bpixels.length < scanlineBytes)
bpixels = new byte[scanlineBytes];
src.getPixels(srcRect.x, srcRect.y, srcRect.width, srcRect.height, pixels);
for (int h = 0; h < scanlineBytes; h++) {
bpixels[h] = (byte) pixels[h];
}
encodeRLE8(bpixels, scanlineBytes);
}
} else {
src.getPixels(srcRect.x, srcRect.y, srcRect.width, srcRect.height, pixels);
if (scaleX != 1 || maxBandOffset != numBands - 1) {
for (int j = 0, k = 0, n = 0; j < w; j++, k += scaleX * numBands, n += numBands) {
System.arraycopy(pixels, k, pixel, 0, pixel.length);
for (int m = 0; m < numBands; m++) {
// pixel data is provided here in RGB order
pixels[n + m] = pixel[sourceBands[m]];
}
}
}
writePixels(0, scanlineBytes, bitsPerPixel, pixels, padding, numBands, icm);
}
processImageProgress(100.0f * (((float) i) / ((float) h)));
}
if (compressionType == BI_RLE4 || compressionType == BI_RLE8) {
// Write the RLE EOF marker and
stream.writeByte(0);
stream.writeByte(1);
incCompImageSize(2);
// update the file/image Size
imageSize = compImageSize;
fileSize = compImageSize + offset;
long endPos = stream.getStreamPosition();
stream.seek(headPos);
writeSize(fileSize, 2);
stream.seek(headPos);
writeSize(imageSize, 34);
stream.seek(endPos);
}
if (abortRequested()) {
processWriteAborted();
} else {
processImageComplete();
stream.flushBefore(stream.getStreamPosition());
}
}
use of java.awt.image.IndexColorModel in project jdk8u_jdk by JetBrains.
the class ImageUtil method createColorModel.
/* XXX testing only
public static void main(String[] args) {
ImageTypeSpecifier bilevel =
ImageTypeSpecifier.createIndexed(new byte[] {(byte)0, (byte)255},
new byte[] {(byte)0, (byte)255},
new byte[] {(byte)0, (byte)255},
null, 1,
DataBuffer.TYPE_BYTE);
ImageTypeSpecifier gray =
ImageTypeSpecifier.createGrayscale(8, DataBuffer.TYPE_BYTE, false);
ImageTypeSpecifier grayAlpha =
ImageTypeSpecifier.createGrayscale(8, DataBuffer.TYPE_BYTE, false,
false);
ImageTypeSpecifier rgb =
ImageTypeSpecifier.createInterleaved(ColorSpace.getInstance(ColorSpace.CS_sRGB),
new int[] {0, 1, 2},
DataBuffer.TYPE_BYTE,
false,
false);
ImageTypeSpecifier rgba =
ImageTypeSpecifier.createInterleaved(ColorSpace.getInstance(ColorSpace.CS_sRGB),
new int[] {0, 1, 2, 3},
DataBuffer.TYPE_BYTE,
true,
false);
ImageTypeSpecifier packed =
ImageTypeSpecifier.createPacked(ColorSpace.getInstance(ColorSpace.CS_sRGB),
0xff000000,
0x00ff0000,
0x0000ff00,
0x000000ff,
DataBuffer.TYPE_BYTE,
false);
SampleModel bandedSM =
new java.awt.image.BandedSampleModel(DataBuffer.TYPE_BYTE,
1, 1, 15);
System.out.println(createColorModel(bilevel.getSampleModel()));
System.out.println(createColorModel(gray.getSampleModel()));
System.out.println(createColorModel(grayAlpha.getSampleModel()));
System.out.println(createColorModel(rgb.getSampleModel()));
System.out.println(createColorModel(rgba.getSampleModel()));
System.out.println(createColorModel(packed.getSampleModel()));
System.out.println(createColorModel(bandedSM));
}
*/
/**
* Creates a <code>ColorModel</code> that may be used with the
* specified <code>SampleModel</code>. If a suitable
* <code>ColorModel</code> cannot be found, this method returns
* <code>null</code>.
*
* <p> Suitable <code>ColorModel</code>s are guaranteed to exist
* for all instances of <code>ComponentSampleModel</code>.
* For 1- and 3- banded <code>SampleModel</code>s, the returned
* <code>ColorModel</code> will be opaque. For 2- and 4-banded
* <code>SampleModel</code>s, the output will use alpha transparency
* which is not premultiplied. 1- and 2-banded data will use a
* grayscale <code>ColorSpace</code>, and 3- and 4-banded data a sRGB
* <code>ColorSpace</code>. Data with 5 or more bands will have a
* <code>BogusColorSpace</code>.</p>
*
* <p>An instance of <code>DirectColorModel</code> will be created for
* instances of <code>SinglePixelPackedSampleModel</code> with no more
* than 4 bands.</p>
*
* <p>An instance of <code>IndexColorModel</code> will be created for
* instances of <code>MultiPixelPackedSampleModel</code>. The colormap
* will be a grayscale ramp with <code>1 << numberOfBits</code>
* entries ranging from zero to at most 255.</p>
*
* @return An instance of <code>ColorModel</code> that is suitable for
* the supplied <code>SampleModel</code>, or <code>null</code>.
*
* @throws IllegalArgumentException If <code>sampleModel</code> is
* <code>null</code>.
*/
public static final ColorModel createColorModel(SampleModel sampleModel) {
// Check the parameter.
if (sampleModel == null) {
throw new IllegalArgumentException("sampleModel == null!");
}
// Get the data type.
int dataType = sampleModel.getDataType();
// Check the data type
switch(dataType) {
case DataBuffer.TYPE_BYTE:
case DataBuffer.TYPE_USHORT:
case DataBuffer.TYPE_SHORT:
case DataBuffer.TYPE_INT:
case DataBuffer.TYPE_FLOAT:
case DataBuffer.TYPE_DOUBLE:
break;
default:
// Return null for other types.
return null;
}
// The return variable.
ColorModel colorModel = null;
// Get the sample size.
int[] sampleSize = sampleModel.getSampleSize();
// Create a Component ColorModel.
if (sampleModel instanceof ComponentSampleModel) {
// Get the number of bands.
int numBands = sampleModel.getNumBands();
// Determine the color space.
ColorSpace colorSpace = null;
if (numBands <= 2) {
colorSpace = ColorSpace.getInstance(ColorSpace.CS_GRAY);
} else if (numBands <= 4) {
colorSpace = ColorSpace.getInstance(ColorSpace.CS_sRGB);
} else {
colorSpace = new BogusColorSpace(numBands);
}
boolean hasAlpha = (numBands == 2) || (numBands == 4);
boolean isAlphaPremultiplied = false;
int transparency = hasAlpha ? Transparency.TRANSLUCENT : Transparency.OPAQUE;
colorModel = new ComponentColorModel(colorSpace, sampleSize, hasAlpha, isAlphaPremultiplied, transparency, dataType);
} else if (sampleModel.getNumBands() <= 4 && sampleModel instanceof SinglePixelPackedSampleModel) {
SinglePixelPackedSampleModel sppsm = (SinglePixelPackedSampleModel) sampleModel;
int[] bitMasks = sppsm.getBitMasks();
int rmask = 0;
int gmask = 0;
int bmask = 0;
int amask = 0;
int numBands = bitMasks.length;
if (numBands <= 2) {
rmask = gmask = bmask = bitMasks[0];
if (numBands == 2) {
amask = bitMasks[1];
}
} else {
rmask = bitMasks[0];
gmask = bitMasks[1];
bmask = bitMasks[2];
if (numBands == 4) {
amask = bitMasks[3];
}
}
int bits = 0;
for (int i = 0; i < sampleSize.length; i++) {
bits += sampleSize[i];
}
return new DirectColorModel(bits, rmask, gmask, bmask, amask);
} else if (sampleModel instanceof MultiPixelPackedSampleModel) {
// Load the colormap with a ramp.
int bitsPerSample = sampleSize[0];
int numEntries = 1 << bitsPerSample;
byte[] map = new byte[numEntries];
for (int i = 0; i < numEntries; i++) {
map[i] = (byte) (i * 255 / (numEntries - 1));
}
colorModel = new IndexColorModel(bitsPerSample, numEntries, map, map, map);
}
return colorModel;
}
use of java.awt.image.IndexColorModel in project jdk8u_jdk by JetBrains.
the class ImageUtil method createColorModel.
public static ColorModel createColorModel(ColorSpace colorSpace, SampleModel sampleModel) {
ColorModel colorModel = null;
if (sampleModel == null) {
throw new IllegalArgumentException(I18N.getString("ImageUtil1"));
}
int numBands = sampleModel.getNumBands();
if (numBands < 1 || numBands > 4) {
return null;
}
int dataType = sampleModel.getDataType();
if (sampleModel instanceof ComponentSampleModel) {
if (dataType < DataBuffer.TYPE_BYTE || //dataType == DataBuffer.TYPE_SHORT ||
dataType > DataBuffer.TYPE_DOUBLE) {
return null;
}
if (colorSpace == null)
colorSpace = numBands <= 2 ? ColorSpace.getInstance(ColorSpace.CS_GRAY) : ColorSpace.getInstance(ColorSpace.CS_sRGB);
boolean useAlpha = (numBands == 2) || (numBands == 4);
int transparency = useAlpha ? Transparency.TRANSLUCENT : Transparency.OPAQUE;
boolean premultiplied = false;
int dataTypeSize = DataBuffer.getDataTypeSize(dataType);
int[] bits = new int[numBands];
for (int i = 0; i < numBands; i++) {
bits[i] = dataTypeSize;
}
colorModel = new ComponentColorModel(colorSpace, bits, useAlpha, premultiplied, transparency, dataType);
} else if (sampleModel instanceof SinglePixelPackedSampleModel) {
SinglePixelPackedSampleModel sppsm = (SinglePixelPackedSampleModel) sampleModel;
int[] bitMasks = sppsm.getBitMasks();
int rmask = 0;
int gmask = 0;
int bmask = 0;
int amask = 0;
numBands = bitMasks.length;
if (numBands <= 2) {
rmask = gmask = bmask = bitMasks[0];
if (numBands == 2) {
amask = bitMasks[1];
}
} else {
rmask = bitMasks[0];
gmask = bitMasks[1];
bmask = bitMasks[2];
if (numBands == 4) {
amask = bitMasks[3];
}
}
int[] sampleSize = sppsm.getSampleSize();
int bits = 0;
for (int i = 0; i < sampleSize.length; i++) {
bits += sampleSize[i];
}
if (colorSpace == null)
colorSpace = ColorSpace.getInstance(ColorSpace.CS_sRGB);
colorModel = new DirectColorModel(colorSpace, bits, rmask, gmask, bmask, amask, false, sampleModel.getDataType());
} else if (sampleModel instanceof MultiPixelPackedSampleModel) {
int bits = ((MultiPixelPackedSampleModel) sampleModel).getPixelBitStride();
int size = 1 << bits;
byte[] comp = new byte[size];
for (int i = 0; i < size; i++) comp[i] = (byte) (255 * i / (size - 1));
colorModel = new IndexColorModel(bits, size, comp, comp, comp);
}
return colorModel;
}
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