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Diffstat (limited to 'external/ikvm/openjdk/sun/awt/image/BytePackedRaster.java')
| -rw-r--r-- | external/ikvm/openjdk/sun/awt/image/BytePackedRaster.java | 1389 |
1 files changed, 0 insertions, 1389 deletions
diff --git a/external/ikvm/openjdk/sun/awt/image/BytePackedRaster.java b/external/ikvm/openjdk/sun/awt/image/BytePackedRaster.java deleted file mode 100644 index 25c84f42a0..0000000000 --- a/external/ikvm/openjdk/sun/awt/image/BytePackedRaster.java +++ /dev/null @@ -1,1389 +0,0 @@ -/* - * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -package sun.awt.image; -import java.awt.image.Raster; -import java.awt.image.WritableRaster; -import java.awt.image.RasterFormatException; -import java.awt.image.SampleModel; -import java.awt.image.MultiPixelPackedSampleModel; -import java.awt.image.DataBuffer; -import java.awt.image.DataBufferByte; -import java.awt.Rectangle; -import java.awt.Point; - -/** - * This class is useful for describing 1, 2, or 4 bit image data - * elements. This raster has one band whose pixels are packed - * together into individual bytes in a single byte array. This type - * of raster can be used with an IndexColorModel. This raster uses a - * MultiPixelPackedSampleModel. - * - */ -public class BytePackedRaster extends SunWritableRaster { - - /** The data bit offset for each pixel. */ - int dataBitOffset; - - /** Scanline stride of the image data contained in this Raster. */ - int scanlineStride; - - /** - * The bit stride of a pixel, equal to the total number of bits - * required to store a pixel. - */ - int pixelBitStride; - - /** The bit mask for extracting the pixel. */ - int bitMask; - - /** The image data array. */ - byte[] data; - - /** 8 minus the pixel bit stride. */ - int shiftOffset; - - int type; - - /** A cached copy of minX + width for use in bounds checks. */ - private int maxX; - - /** A cached copy of minY + height for use in bounds checks. */ - private int maxY; - - /** - * Constructs a BytePackedRaster with the given SampleModel. - * The Raster's upper left corner is origin and it is the same - * size as the SampleModel. A DataBuffer large enough to describe the - * Raster is automatically created. SampleModel must be of type - * MultiPixelPackedSampleModel. - * @param sampleModel The SampleModel that specifies the layout. - * @param origin The Point that specified the origin. - */ - public BytePackedRaster(SampleModel sampleModel, - Point origin) { - this(sampleModel, - sampleModel.createDataBuffer(), - new Rectangle(origin.x, - origin.y, - sampleModel.getWidth(), - sampleModel.getHeight()), - origin, - null); - } - - /** - * Constructs a BytePackedRaster with the given SampleModel - * and DataBuffer. The Raster's upper left corner is origin and - * it is the same size as the SampleModel. The DataBuffer is not - * initialized and must be a DataBufferByte compatible with SampleModel. - * SampleModel must be of type MultiPixelPackedSampleModel. - * @param sampleModel The SampleModel that specifies the layout. - * @param dataBuffer The DataBufferShort that contains the image data. - * @param origin The Point that specifies the origin. - */ - public BytePackedRaster(SampleModel sampleModel, - DataBuffer dataBuffer, - Point origin) { - this(sampleModel, - dataBuffer, - new Rectangle(origin.x, - origin.y, - sampleModel.getWidth(), - sampleModel.getHeight()), - origin, - null); - } - - /** - * Constructs a BytePackedRaster with the given SampleModel, - * DataBuffer, and parent. DataBuffer must be a DataBufferByte and - * SampleModel must be of type MultiPixelPackedSampleModel. - * When translated into the base Raster's - * coordinate system, aRegion must be contained by the base Raster. - * Origin is the coordinate in the new Raster's coordinate system of - * the origin of the base Raster. (The base Raster is the Raster's - * ancestor which has no parent.) - * - * Note that this constructor should generally be called by other - * constructors or create methods, it should not be used directly. - * @param sampleModel The SampleModel that specifies the layout. - * @param dataBuffer The DataBufferShort that contains the image data. - * @param aRegion The Rectangle that specifies the image area. - * @param origin The Point that specifies the origin. - * @param parent The parent (if any) of this raster. - * - * @exception RasterFormatException if the parameters do not conform - * to requirements of this Raster type. - */ - public BytePackedRaster(SampleModel sampleModel, - DataBuffer dataBuffer, - Rectangle aRegion, - Point origin, - BytePackedRaster parent){ - super(sampleModel,dataBuffer,aRegion,origin, parent); - this.maxX = minX + width; - this.maxY = minY + height; - - if (!(dataBuffer instanceof DataBufferByte)) { - throw new RasterFormatException("BytePackedRasters must have" + - "byte DataBuffers"); - } - DataBufferByte dbb = (DataBufferByte)dataBuffer; - this.data = stealData(dbb, 0); - if (dbb.getNumBanks() != 1) { - throw new - RasterFormatException("DataBuffer for BytePackedRasters"+ - " must only have 1 bank."); - } - int dbOffset = dbb.getOffset(); - - if (sampleModel instanceof MultiPixelPackedSampleModel) { - MultiPixelPackedSampleModel mppsm = - (MultiPixelPackedSampleModel)sampleModel; - this.type = IntegerComponentRaster.TYPE_BYTE_BINARY_SAMPLES; - pixelBitStride = mppsm.getPixelBitStride(); - if (pixelBitStride != 1 && - pixelBitStride != 2 && - pixelBitStride != 4) { - throw new RasterFormatException - ("BytePackedRasters must have a bit depth of 1, 2, or 4"); - } - scanlineStride = mppsm.getScanlineStride(); - dataBitOffset = mppsm.getDataBitOffset() + dbOffset*8; - int xOffset = aRegion.x - origin.x; - int yOffset = aRegion.y - origin.y; - dataBitOffset += xOffset*pixelBitStride + yOffset*scanlineStride*8; - bitMask = (1 << pixelBitStride) -1; - shiftOffset = 8 - pixelBitStride; - } else { - throw new RasterFormatException("BytePackedRasters must have"+ - "MultiPixelPackedSampleModel"); - } - verify(false); - } - - /** - * Returns the data bit offset for the Raster. The data - * bit offset is the bit index into the data array element - * corresponding to the first sample of the first scanline. - */ - public int getDataBitOffset() { - return dataBitOffset; - } - - /** - * Returns the scanline stride -- the number of data array elements between - * a given sample and the sample in the same column - * of the next row. - */ - public int getScanlineStride() { - return scanlineStride; - } - - /** - * Returns pixel bit stride -- the number of bits between two - * samples on the same scanline. - */ - public int getPixelBitStride() { - return pixelBitStride; - } - - /** - * Returns a reference to the entire data array. - */ - public byte[] getDataStorage() { - return data; - } - - /** - * Returns the data element at the specified - * location. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinate is out of bounds. - * A ClassCastException will be thrown if the input object is non null - * and references anything other than an array of transferType. - * @param x The X coordinate of the pixel location. - * @param y The Y coordinate of the pixel location. - * @param outData An object reference to an array of type defined by - * getTransferType() and length getNumDataElements(). - * If null an array of appropriate type and size will be - * allocated. - * @return An object reference to an array of type defined by - * getTransferType() with the request pixel data. - */ - public Object getDataElements(int x, int y, Object obj) { - if ((x < this.minX) || (y < this.minY) || - (x >= this.maxX) || (y >= this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - byte outData[]; - if (obj == null) { - outData = new byte[numDataElements]; - } else { - outData = (byte[])obj; - } - int bitnum = dataBitOffset + (x-minX) * pixelBitStride; - // Fix 4184283 - int element = data[(y-minY) * scanlineStride + (bitnum >> 3)] & 0xff; - int shift = shiftOffset - (bitnum & 7); - outData[0] = (byte)((element >> shift) & bitMask); - return outData; - } - - /** - * Returns the pixel data for the specified rectangle of pixels in a - * primitive array of type TransferType. - * For image data supported by the Java 2D API, this - * will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, or - * DataBuffer.TYPE_INT. Data may be returned in a packed format, - * thus increasing efficiency for data transfers. - * - * An ArrayIndexOutOfBoundsException may be thrown - * if the coordinates are not in bounds. - * A ClassCastException will be thrown if the input object is non null - * and references anything other than an array of TransferType. - * @see java.awt.image.SampleModel#getDataElements(int, int, int, int, Object, DataBuffer) - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param w Width of the pixel rectangle. - * @param h Height of the pixel rectangle. - * @param outData An object reference to an array of type defined by - * getTransferType() and length w*h*getNumDataElements(). - * If null, an array of appropriate type and size will be - * allocated. - * @return An object reference to an array of type defined by - * getTransferType() with the requested pixel data. - */ - public Object getDataElements(int x, int y, int w, int h, - Object outData) { - return getByteData(x, y, w, h, (byte[])outData); - } - - /** - * Returns an array of data elements from the specified rectangular - * region. - * - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * A ClassCastException will be thrown if the input object is non null - * and references anything other than an array of transferType. - * <pre> - * byte[] bandData = (byte[])raster.getPixelData(x, y, w, h, null); - * int pixel; - * // To find a data element at location (x2, y2) - * pixel = bandData[((y2-y)*w + (x2-x))]; - * </pre> - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param width Width of the pixel rectangle. - * @param height Height of the pixel rectangle. - * @param outData An object reference to an array of type defined by - * getTransferType() and length w*h*getNumDataElements(). - * If null an array of appropriate type and size will be - * allocated. - * @return An object reference to an array of type defined by - * getTransferType() with the request pixel data. - */ - public Object getPixelData(int x, int y, int w, int h, Object obj) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - byte outData[]; - if (obj == null) { - outData = new byte[numDataElements*w*h]; - } else { - outData = (byte[])obj; - } - int pixbits = pixelBitStride; - int scanbit = dataBitOffset + (x-minX) * pixbits; - int index = (y-minY) * scanlineStride; - int outindex = 0; - byte data[] = this.data; - - for (int j = 0; j < h; j++) { - int bitnum = scanbit; - for (int i = 0; i < w; i++) { - int shift = shiftOffset - (bitnum & 7); - outData[outindex++] = - (byte)(bitMask & (data[index + (bitnum >> 3)] >> shift)); - bitnum += pixbits; - } - index += scanlineStride; - } - return outData; - } - - /** - * Returns a byte array containing the specified data elements - * from the data array. The band index will be ignored. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * <pre> - * byte[] byteData = getByteData(x, y, band, w, h, null); - * // To find a data element at location (x2, y2) - * byte element = byteData[(y2-y)*w + (x2-x)]; - * </pre> - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param width Width of the pixel rectangle. - * @param height Height of the pixel rectangle. - * @param band The band to return, is ignored. - * @param outData If non-null, data elements - * at the specified locations are returned in this array. - * @return Byte array with data elements. - */ - public byte[] getByteData(int x, int y, int w, int h, - int band, byte[] outData) { - return getByteData(x, y, w, h, outData); - } - - /** - * Returns a byte array containing the specified data elements - * from the data array. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * <pre> - * byte[] byteData = raster.getByteData(x, y, w, h, null); - * byte pixel; - * // To find a data element at location (x2, y2) - * pixel = byteData[((y2-y)*w + (x2-x))]; - * </pre> - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param width Width of the pixel rectangle. - * @param height Height of the pixel rectangle. - * @param outData If non-null, data elements - * at the specified locations are returned in this array. - * @return Byte array with data elements. - */ - public byte[] getByteData(int x, int y, int w, int h, byte[] outData) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - if (outData == null) { - outData = new byte[w * h]; - } - int pixbits = pixelBitStride; - int scanbit = dataBitOffset + (x-minX) * pixbits; - int index = (y-minY) * scanlineStride; - int outindex = 0; - byte data[] = this.data; - - for (int j = 0; j < h; j++) { - int bitnum = scanbit; - int element; - - // Process initial portion of scanline - int i = 0; - while ((i < w) && ((bitnum & 7) != 0)) { - int shift = shiftOffset - (bitnum & 7); - outData[outindex++] = - (byte)(bitMask & (data[index + (bitnum >> 3)] >> shift)); - bitnum += pixbits; - i++; - } - - // Process central portion of scanline 8 pixels at a time - int inIndex = index + (bitnum >> 3); - switch (pixbits) { - case 1: - for (; i < w - 7; i += 8) { - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 7) & 1); - outData[outindex++] = (byte)((element >> 6) & 1); - outData[outindex++] = (byte)((element >> 5) & 1); - outData[outindex++] = (byte)((element >> 4) & 1); - outData[outindex++] = (byte)((element >> 3) & 1); - outData[outindex++] = (byte)((element >> 2) & 1); - outData[outindex++] = (byte)((element >> 1) & 1); - outData[outindex++] = (byte)(element & 1); - bitnum += 8; - } - break; - - case 2: - for (; i < w - 7; i += 8) { - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 6) & 3); - outData[outindex++] = (byte)((element >> 4) & 3); - outData[outindex++] = (byte)((element >> 2) & 3); - outData[outindex++] = (byte)(element & 3); - - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 6) & 3); - outData[outindex++] = (byte)((element >> 4) & 3); - outData[outindex++] = (byte)((element >> 2) & 3); - outData[outindex++] = (byte)(element & 3); - - bitnum += 16; - } - break; - - case 4: - for (; i < w - 7; i += 8) { - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 4) & 0xf); - outData[outindex++] = (byte)(element & 0xf); - - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 4) & 0xf); - outData[outindex++] = (byte)(element & 0xf); - - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 4) & 0xf); - outData[outindex++] = (byte)(element & 0xf); - - element = data[inIndex++]; - outData[outindex++] = (byte)((element >> 4) & 0xf); - outData[outindex++] = (byte)(element & 0xf); - - bitnum += 32; - } - break; - } - - // Process final portion of scanline - for (; i < w; i++) { - int shift = shiftOffset - (bitnum & 7); - outData[outindex++] = - (byte) (bitMask & (data[index + (bitnum >> 3)] >> shift)); - bitnum += pixbits; - } - - index += scanlineStride; - } - - return outData; - } - - /** - * Stores the data elements at the specified location. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinate is out of bounds. - * A ClassCastException will be thrown if the input object is non null - * and references anything other than an array of transferType. - * @param x The X coordinate of the pixel location. - * @param y The Y coordinate of the pixel location. - * @param inData An object reference to an array of type defined by - * getTransferType() and length getNumDataElements() - * containing the pixel data to place at x,y. - */ - public void setDataElements(int x, int y, Object obj) { - if ((x < this.minX) || (y < this.minY) || - (x >= this.maxX) || (y >= this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - byte inData[] = (byte[])obj; - int bitnum = dataBitOffset + (x-minX) * pixelBitStride; - int index = (y-minY) * scanlineStride + (bitnum >> 3); - int shift = shiftOffset - (bitnum & 7); - - byte element = data[index]; - element &= ~(bitMask << shift); - element |= (inData[0] & bitMask) << shift; - data[index] = element; - - markDirty(); - } - - /** - * Stores the Raster data at the specified location. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * @param x The X coordinate of the pixel location. - * @param y The Y coordinate of the pixel location. - * @param inRaster Raster of data to place at x,y location. - */ - public void setDataElements(int x, int y, Raster inRaster) { - // Check if we can use fast code - if (!(inRaster instanceof BytePackedRaster) || - ((BytePackedRaster)inRaster).pixelBitStride != pixelBitStride) { - super.setDataElements(x, y, inRaster); - return; - } - - int srcOffX = inRaster.getMinX(); - int srcOffY = inRaster.getMinY(); - int dstOffX = srcOffX + x; - int dstOffY = srcOffY + y; - int width = inRaster.getWidth(); - int height = inRaster.getHeight(); - if ((dstOffX < this.minX) || (dstOffY < this.minY) || - (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - setDataElements(dstOffX, dstOffY, - srcOffX, srcOffY, - width, height, - (BytePackedRaster)inRaster); - } - - /** - * Stores the Raster data at the specified location. - * @param dstX The absolute X coordinate of the destination pixel - * that will receive a copy of the upper-left pixel of the - * inRaster - * @param dstY The absolute Y coordinate of the destination pixel - * that will receive a copy of the upper-left pixel of the - * inRaster - * @param srcX The absolute X coordinate of the upper-left source - * pixel that will be copied into this Raster - * @param srcY The absolute Y coordinate of the upper-left source - * pixel that will be copied into this Raster - * @param width The number of pixels to store horizontally - * @param height The number of pixels to store vertically - * @param inRaster BytePackedRaster of data to place at x,y location. - */ - private void setDataElements(int dstX, int dstY, - int srcX, int srcY, - int width, int height, - BytePackedRaster inRaster) { - // Assume bounds checking has been performed previously - if (width <= 0 || height <= 0) { - return; - } - - byte[] inData = inRaster.data; - byte[] outData = this.data; - - int inscan = inRaster.scanlineStride; - int outscan = this.scanlineStride; - int inbit = inRaster.dataBitOffset + - 8 * (srcY - inRaster.minY) * inscan + - (srcX - inRaster.minX) * inRaster.pixelBitStride; - int outbit = (this.dataBitOffset + - 8 * (dstY - minY) * outscan + - (dstX - minX) * this.pixelBitStride); - int copybits = width * pixelBitStride; - - // Check whether the same bit alignment is present in both - // Rasters; if so, we can copy whole bytes using - // System.arraycopy. If not, we must do a "funnel shift" - // where adjacent bytes contribute to each destination byte. - if ((inbit & 7) == (outbit & 7)) { - // copy is bit aligned - int bitpos = outbit & 7; - if (bitpos != 0) { - int bits = 8 - bitpos; - // Copy partial bytes on left - int inbyte = inbit >> 3; - int outbyte = outbit >> 3; - int mask = 0xff >> bitpos; - if (copybits < bits) { - // Fix bug 4399076: previously had '8 - copybits' instead - // of 'bits - copybits'. - // - // Prior to the this expression, 'mask' has its rightmost - // 'bits' bits set to '1'. We want it to have a total - // of 'copybits' bits set, therefore we want to introduce - // 'bits - copybits' zeroes on the right. - mask &= 0xff << (bits - copybits); - bits = copybits; - } - for (int j = 0; j < height; j++) { - int element = outData[outbyte]; - element &= ~mask; - element |= (inData[inbyte] & mask); - outData[outbyte] = (byte) element; - inbyte += inscan; - outbyte += outscan; - } - inbit += bits; - outbit += bits; - copybits -= bits; - } - if (copybits >= 8) { - // Copy whole bytes - int inbyte = inbit >> 3; - int outbyte = outbit >> 3; - int copybytes = copybits >> 3; - if (copybytes == inscan && inscan == outscan) { - System.arraycopy(inData, inbyte, - outData, outbyte, - inscan * height); - } else { - for (int j = 0; j < height; j++) { - System.arraycopy(inData, inbyte, - outData, outbyte, - copybytes); - inbyte += inscan; - outbyte += outscan; - } - } - - int bits = copybytes*8; - inbit += bits; - outbit += bits; - copybits -= bits; - } - if (copybits > 0) { - // Copy partial bytes on right - int inbyte = inbit >> 3; - int outbyte = outbit >> 3; - int mask = (0xff00 >> copybits) & 0xff; - for (int j = 0; j < height; j++) { - int element = outData[outbyte]; - element &= ~mask; - element |= (inData[inbyte] & mask); - outData[outbyte] = (byte) element; - inbyte += inscan; - outbyte += outscan; - } - } - } else { - // Unaligned case, see RFE #4284166 - // Note that the code in that RFE is not correct - - // Insert bits into the first byte of the output - // if either the starting bit position is not zero or - // we are writing fewer than 8 bits in total - int bitpos = outbit & 7; - if (bitpos != 0 || copybits < 8) { - int bits = 8 - bitpos; - int inbyte = inbit >> 3; - int outbyte = outbit >> 3; - - int lshift = inbit & 7; - int rshift = 8 - lshift; - int mask = 0xff >> bitpos; - if (copybits < bits) { - // Fix mask if we're only writing a partial byte - mask &= 0xff << (bits - copybits); - bits = copybits; - } - int lastByte = inData.length - 1; - for (int j = 0; j < height; j++) { - // Read two bytes from the source if possible - // Don't worry about going over a scanline boundary - // since any extra bits won't get used anyway - byte inData0 = inData[inbyte]; - byte inData1 = (byte)0; - if (inbyte < lastByte) { - inData1 = inData[inbyte + 1]; - } - - // Insert the new bits into the output - int element = outData[outbyte]; - element &= ~mask; - element |= (((inData0 << lshift) | - ((inData1 & 0xff) >> rshift)) - >> bitpos) & mask; - outData[outbyte] = (byte)element; - inbyte += inscan; - outbyte += outscan; - } - - inbit += bits; - outbit += bits; - copybits -= bits; - } - - // Now we have outbit & 7 == 0 so we can write - // complete bytes for a while - - // Make sure we have work to do in the central loop - // to avoid reading past the end of the scanline - if (copybits >= 8) { - int inbyte = inbit >> 3; - int outbyte = outbit >> 3; - int copybytes = copybits >> 3; - int lshift = inbit & 7; - int rshift = 8 - lshift; - - for (int j = 0; j < height; j++) { - int ibyte = inbyte + j*inscan; - int obyte = outbyte + j*outscan; - - int inData0 = inData[ibyte]; - // Combine adjacent bytes while 8 or more bits left - for (int i = 0; i < copybytes; i++) { - int inData1 = inData[ibyte + 1]; - int val = (inData0 << lshift) | - ((inData1 & 0xff) >> rshift); - outData[obyte] = (byte)val; - inData0 = inData1; - - ++ibyte; - ++obyte; - } - } - - int bits = copybytes*8; - inbit += bits; - outbit += bits; - copybits -= bits; - } - - // Finish last byte - if (copybits > 0) { - int inbyte = inbit >> 3; - int outbyte = outbit >> 3; - int mask = (0xff00 >> copybits) & 0xff; - int lshift = inbit & 7; - int rshift = 8 - lshift; - - int lastByte = inData.length - 1; - for (int j = 0; j < height; j++) { - byte inData0 = inData[inbyte]; - byte inData1 = (byte)0; - if (inbyte < lastByte) { - inData1 = inData[inbyte + 1]; - } - - // Insert the new bits into the output - int element = outData[outbyte]; - element &= ~mask; - element |= ((inData0 << lshift) | - ((inData1 & 0xff) >> rshift)) & mask; - outData[outbyte] = (byte)element; - - inbyte += inscan; - outbyte += outscan; - } - } - } - - markDirty(); - } - - /** - * Copies pixels from Raster srcRaster to this WritableRaster. - * For each (x, y) address in srcRaster, the corresponding pixel - * is copied to address (x+dx, y+dy) in this WritableRaster, - * unless (x+dx, y+dy) falls outside the bounds of this raster. - * srcRaster must have the same number of bands as this WritableRaster. - * The copy is a simple copy of source samples to the corresponding - * destination samples. For details, see - * {@link WritableRaster#setRect(Raster)}. - * - * @param dx The X translation factor from src space to dst space - * of the copy. - * @param dy The Y translation factor from src space to dst space - * of the copy. - * @param srcRaster The Raster from which to copy pixels. - */ - public void setRect(int dx, int dy, Raster srcRaster) { - // Check if we can use fast code - if (!(srcRaster instanceof BytePackedRaster) || - ((BytePackedRaster)srcRaster).pixelBitStride != pixelBitStride) { - super.setRect(dx, dy, srcRaster); - return; - } - - int width = srcRaster.getWidth(); - int height = srcRaster.getHeight(); - int srcOffX = srcRaster.getMinX(); - int srcOffY = srcRaster.getMinY(); - int dstOffX = dx+srcOffX; - int dstOffY = dy+srcOffY; - - // Clip to this raster - if (dstOffX < this.minX) { - int skipX = this.minX - dstOffX; - width -= skipX; - srcOffX += skipX; - dstOffX = this.minX; - } - if (dstOffY < this.minY) { - int skipY = this.minY - dstOffY; - height -= skipY; - srcOffY += skipY; - dstOffY = this.minY; - } - if (dstOffX+width > this.maxX) { - width = this.maxX - dstOffX; - } - if (dstOffY+height > this.maxY) { - height = this.maxY - dstOffY; - } - - setDataElements(dstOffX, dstOffY, - srcOffX, srcOffY, - width, height, - (BytePackedRaster)srcRaster); - } - - /** - * Stores an array of data elements into the specified rectangular - * region. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * A ClassCastException will be thrown if the input object is non null - * and references anything other than an array of transferType. - * The data elements in the - * data array are assumed to be packed. That is, a data element - * at location (x2, y2) would be found at: - * <pre> - * inData[((y2-y)*w + (x2-x))] - * </pre> - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param w Width of the pixel rectangle. - * @param h Height of the pixel rectangle. - * @param inData An object reference to an array of type defined by - * getTransferType() and length w*h*getNumDataElements() - * containing the pixel data to place between x,y and - * x+h, y+h. - */ - public void setDataElements(int x, int y, int w, int h, Object obj) { - putByteData(x, y, w, h, (byte[])obj); - } - - /** - * Stores a byte array of data elements into the specified rectangular - * region. The band index will be ignored. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * The data elements in the - * data array are assumed to be packed. That is, a data element - * at location (x2, y2) would be found at: - * <pre> - * inData[((y2-y)*w + (x2-x))] - * </pre> - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param w Width of the pixel rectangle. - * @param h Height of the pixel rectangle. - * @param band The band to set, is ignored. - * @param inData The data elements to be stored. - */ - public void putByteData(int x, int y, int w, int h, - int band, byte[] inData) { - putByteData(x, y, w, h, inData); - } - - /** - * Stores a byte array of data elements into the specified rectangular - * region. - * An ArrayIndexOutOfBounds exception will be thrown at runtime - * if the pixel coordinates are out of bounds. - * The data elements in the - * data array are assumed to be packed. That is, a data element - * at location (x2, y2) would be found at: - * <pre> - * inData[((y2-y)*w + (x2-x))] - * </pre> - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param w Width of the pixel rectangle. - * @param h Height of the pixel rectangle. - * @param inData The data elements to be stored. - */ - public void putByteData(int x, int y, int w, int h, byte[] inData) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - if (w == 0 || h == 0) { - return; - } - - int pixbits = pixelBitStride; - int scanbit = dataBitOffset + (x - minX) * pixbits; - int index = (y - minY) * scanlineStride; - int outindex = 0; - byte data[] = this.data; - for (int j = 0; j < h; j++) { - int bitnum = scanbit; - int element; - - // Process initial portion of scanline - int i = 0; - while ((i < w) && ((bitnum & 7) != 0)) { - int shift = shiftOffset - (bitnum & 7); - element = data[index + (bitnum >> 3)]; - element &= ~(bitMask << shift); - element |= (inData[outindex++] & bitMask) << shift; - data[index + (bitnum >> 3)] = (byte)element; - - bitnum += pixbits; - i++; - } - - // Process central portion of scanline 8 pixels at a time - int inIndex = index + (bitnum >> 3); - switch (pixbits) { - case 1: - for (; i < w - 7; i += 8) { - element = (inData[outindex++] & 1) << 7; - element |= (inData[outindex++] & 1) << 6; - element |= (inData[outindex++] & 1) << 5; - element |= (inData[outindex++] & 1) << 4; - element |= (inData[outindex++] & 1) << 3; - element |= (inData[outindex++] & 1) << 2; - element |= (inData[outindex++] & 1) << 1; - element |= (inData[outindex++] & 1); - - data[inIndex++] = (byte)element; - - bitnum += 8; - } - break; - - case 2: - for (; i < w - 7; i += 8) { - element = (inData[outindex++] & 3) << 6; - element |= (inData[outindex++] & 3) << 4; - element |= (inData[outindex++] & 3) << 2; - element |= (inData[outindex++] & 3); - data[inIndex++] = (byte)element; - - element = (inData[outindex++] & 3) << 6; - element |= (inData[outindex++] & 3) << 4; - element |= (inData[outindex++] & 3) << 2; - element |= (inData[outindex++] & 3); - data[inIndex++] = (byte)element; - - bitnum += 16; - } - break; - - case 4: - for (; i < w - 7; i += 8) { - element = (inData[outindex++] & 0xf) << 4; - element |= (inData[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - element = (inData[outindex++] & 0xf) << 4; - element |= (inData[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - element = (inData[outindex++] & 0xf) << 4; - element |= (inData[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - element = (inData[outindex++] & 0xf) << 4; - element |= (inData[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - bitnum += 32; - } - break; - } - - // Process final portion of scanline - for (; i < w; i++) { - int shift = shiftOffset - (bitnum & 7); - - element = data[index + (bitnum >> 3)]; - element &= ~(bitMask << shift); - element |= (inData[outindex++] & bitMask) << shift; - data[index + (bitnum >> 3)] = (byte)element; - - bitnum += pixbits; - } - - index += scanlineStride; - } - - markDirty(); - } - - /** - * Returns an int array containing all samples for a rectangle of pixels, - * one sample per array element. - * An ArrayIndexOutOfBoundsException may be thrown - * if the coordinates are not in bounds. - * @param x, y the coordinates of the upper-left pixel location - * @param w Width of the pixel rectangle - * @param h Height of the pixel rectangle - * @param iArray An optionally pre-allocated int array - * @return the samples for the specified rectangle of pixels. - */ - public int[] getPixels(int x, int y, int w, int h, int iArray[]) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - if (iArray == null) { - iArray = new int[w * h]; - } - int pixbits = pixelBitStride; - int scanbit = dataBitOffset + (x-minX) * pixbits; - int index = (y-minY) * scanlineStride; - int outindex = 0; - byte data[] = this.data; - - for (int j = 0; j < h; j++) { - int bitnum = scanbit; - int element; - - // Process initial portion of scanline - int i = 0; - while ((i < w) && ((bitnum & 7) != 0)) { - int shift = shiftOffset - (bitnum & 7); - iArray[outindex++] = - bitMask & (data[index + (bitnum >> 3)] >> shift); - bitnum += pixbits; - i++; - } - - // Process central portion of scanline 8 pixels at a time - int inIndex = index + (bitnum >> 3); - switch (pixbits) { - case 1: - for (; i < w - 7; i += 8) { - element = data[inIndex++]; - iArray[outindex++] = (element >> 7) & 1; - iArray[outindex++] = (element >> 6) & 1; - iArray[outindex++] = (element >> 5) & 1; - iArray[outindex++] = (element >> 4) & 1; - iArray[outindex++] = (element >> 3) & 1; - iArray[outindex++] = (element >> 2) & 1; - iArray[outindex++] = (element >> 1) & 1; - iArray[outindex++] = element & 1; - bitnum += 8; - } - break; - - case 2: - for (; i < w - 7; i += 8) { - element = data[inIndex++]; - iArray[outindex++] = (element >> 6) & 3; - iArray[outindex++] = (element >> 4) & 3; - iArray[outindex++] = (element >> 2) & 3; - iArray[outindex++] = element & 3; - - element = data[inIndex++]; - iArray[outindex++] = (element >> 6) & 3; - iArray[outindex++] = (element >> 4) & 3; - iArray[outindex++] = (element >> 2) & 3; - iArray[outindex++] = element & 3; - - bitnum += 16; - } - break; - - case 4: - for (; i < w - 7; i += 8) { - element = data[inIndex++]; - iArray[outindex++] = (element >> 4) & 0xf; - iArray[outindex++] = element & 0xf; - - element = data[inIndex++]; - iArray[outindex++] = (element >> 4) & 0xf; - iArray[outindex++] = element & 0xf; - - element = data[inIndex++]; - iArray[outindex++] = (element >> 4) & 0xf; - iArray[outindex++] = element & 0xf; - - element = data[inIndex++]; - iArray[outindex++] = (element >> 4) & 0xf; - iArray[outindex++] = element & 0xf; - - bitnum += 32; - } - break; - } - - // Process final portion of scanline - for (; i < w; i++) { - int shift = shiftOffset - (bitnum & 7); - iArray[outindex++] = - bitMask & (data[index + (bitnum >> 3)] >> shift); - bitnum += pixbits; - } - - index += scanlineStride; - } - - return iArray; - } - - /** - * Sets all samples for a rectangle of pixels from an int array containing - * one sample per array element. - * An ArrayIndexOutOfBoundsException may be thrown if the coordinates are - * not in bounds. - * @param x The X coordinate of the upper left pixel location. - * @param y The Y coordinate of the upper left pixel location. - * @param w Width of the pixel rectangle. - * @param h Height of the pixel rectangle. - * @param iArray The input int pixel array. - */ - public void setPixels(int x, int y, int w, int h, int iArray[]) { - if ((x < this.minX) || (y < this.minY) || - (x + w > this.maxX) || (y + h > this.maxY)) { - throw new ArrayIndexOutOfBoundsException - ("Coordinate out of bounds!"); - } - int pixbits = pixelBitStride; - int scanbit = dataBitOffset + (x - minX) * pixbits; - int index = (y - minY) * scanlineStride; - int outindex = 0; - byte data[] = this.data; - for (int j = 0; j < h; j++) { - int bitnum = scanbit; - int element; - - // Process initial portion of scanline - int i = 0; - while ((i < w) && ((bitnum & 7) != 0)) { - int shift = shiftOffset - (bitnum & 7); - element = data[index + (bitnum >> 3)]; - element &= ~(bitMask << shift); - element |= (iArray[outindex++] & bitMask) << shift; - data[index + (bitnum >> 3)] = (byte)element; - - bitnum += pixbits; - i++; - } - - // Process central portion of scanline 8 pixels at a time - int inIndex = index + (bitnum >> 3); - switch (pixbits) { - case 1: - for (; i < w - 7; i += 8) { - element = (iArray[outindex++] & 1) << 7; - element |= (iArray[outindex++] & 1) << 6; - element |= (iArray[outindex++] & 1) << 5; - element |= (iArray[outindex++] & 1) << 4; - element |= (iArray[outindex++] & 1) << 3; - element |= (iArray[outindex++] & 1) << 2; - element |= (iArray[outindex++] & 1) << 1; - element |= (iArray[outindex++] & 1); - data[inIndex++] = (byte)element; - - bitnum += 8; - } - break; - - case 2: - for (; i < w - 7; i += 8) { - element = (iArray[outindex++] & 3) << 6; - element |= (iArray[outindex++] & 3) << 4; - element |= (iArray[outindex++] & 3) << 2; - element |= (iArray[outindex++] & 3); - data[inIndex++] = (byte)element; - - element = (iArray[outindex++] & 3) << 6; - element |= (iArray[outindex++] & 3) << 4; - element |= (iArray[outindex++] & 3) << 2; - element |= (iArray[outindex++] & 3); - data[inIndex++] = (byte)element; - - bitnum += 16; - } - break; - - case 4: - for (; i < w - 7; i += 8) { - element = (iArray[outindex++] & 0xf) << 4; - element |= (iArray[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - element = (iArray[outindex++] & 0xf) << 4; - element |= (iArray[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - element = (iArray[outindex++] & 0xf) << 4; - element |= (iArray[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - element = (iArray[outindex++] & 0xf) << 4; - element |= (iArray[outindex++] & 0xf); - data[inIndex++] = (byte)element; - - bitnum += 32; - } - break; - } - - // Process final portion of scanline - for (; i < w; i++) { - int shift = shiftOffset - (bitnum & 7); - - element = data[index + (bitnum >> 3)]; - element &= ~(bitMask << shift); - element |= (iArray[outindex++] & bitMask) << shift; - data[index + (bitnum >> 3)] = (byte)element; - - bitnum += pixbits; - } - - index += scanlineStride; - } - - markDirty(); - } - - /** - * Creates a subraster given a region of the raster. The x and y - * coordinates specify the horizontal and vertical offsets - * from the upper-left corner of this raster to the upper-left corner - * of the subraster. Note that the subraster will reference the same - * DataBuffer as the parent raster, but using different offsets. The - * bandList is ignored. - * @param x X offset. - * @param y Y offset. - * @param width Width (in pixels) of the subraster. - * @param height Height (in pixels) of the subraster. - * @param x0 Translated X origin of the subraster. - * @param y0 Translated Y origin of the subraster. - * @param bandList Array of band indices. - * @exception RasterFormatException - * if the specified bounding box is outside of the parent raster. - */ - public Raster createChild(int x, int y, - int width, int height, - int x0, int y0, int[] bandList) { - WritableRaster newRaster = createWritableChild(x, y, - width, height, - x0, y0, - bandList); - return (Raster) newRaster; - } - - /** - * Creates a Writable subRaster given a region of the Raster. The x and y - * coordinates specify the horizontal and vertical offsets - * from the upper-left corner of this Raster to the upper-left corner - * of the subRaster. The bandList is ignored. - * A translation to the subRaster may also be specified. - * Note that the subRaster will reference the same - * DataBuffer as the parent Raster, but using different offsets. - * @param x X offset. - * @param y Y offset. - * @param width Width (in pixels) of the subraster. - * @param height Height (in pixels) of the subraster. - * @param x0 Translated X origin of the subraster. - * @param y0 Translated Y origin of the subraster. - * @param bandList Array of band indices. - * @exception RasterFormatException - * if the specified bounding box is outside of the parent Raster. - */ - public WritableRaster createWritableChild(int x, int y, - int width, int height, - int x0, int y0, - int[] bandList) { - if (x < this.minX) { - throw new RasterFormatException("x lies outside the raster"); - } - if (y < this.minY) { - throw new RasterFormatException("y lies outside the raster"); - } - if ((x+width < x) || (x+width > this.minX + this.width)) { - throw new RasterFormatException("(x + width) is outside of Raster"); - } - if ((y+height < y) || (y+height > this.minY + this.height)) { - throw new RasterFormatException("(y + height) is outside of Raster"); - } - - SampleModel sm; - - if (bandList != null) { - sm = sampleModel.createSubsetSampleModel(bandList); - } - else { - sm = sampleModel; - } - - int deltaX = x0 - x; - int deltaY = y0 - y; - - return new BytePackedRaster(sm, - dataBuffer, - new Rectangle(x0, y0, width, height), - new Point(sampleModelTranslateX+deltaX, - sampleModelTranslateY+deltaY), - this); - } - - /** - * Creates a raster with the same layout but using a different - * width and height, and with new zeroed data arrays. - */ - public WritableRaster createCompatibleWritableRaster(int w, int h) { - if (w <= 0 || h <=0) { - throw new RasterFormatException("negative "+ - ((w <= 0) ? "width" : "height")); - } - - SampleModel sm = sampleModel.createCompatibleSampleModel(w,h); - - return new BytePackedRaster(sm, new Point(0,0)); - } - - /** - * Creates a raster with the same layout and the same - * width and height, and with new zeroed data arrays. - */ - public WritableRaster createCompatibleWritableRaster () { - return createCompatibleWritableRaster(width,height); - } - - /** - * Verify that the layout parameters are consistent with - * the data. If strictCheck - * is false, this method will check for ArrayIndexOutOfBounds conditions. - * If strictCheck is true, this method will check for additional error - * conditions such as line wraparound (width of a line greater than - * the scanline stride). - * @return String Error string, if the layout is incompatible with - * the data. Otherwise returns null. - */ - private void verify (boolean strictCheck) { - // Make sure data for Raster is in a legal range - if (dataBitOffset < 0) { - throw new RasterFormatException("Data offsets must be >= 0"); - } - - int lastbit = (dataBitOffset - + (height-1) * scanlineStride * 8 - + (width-1) * pixelBitStride - + pixelBitStride - 1); - if (lastbit / 8 >= data.length) { - throw new RasterFormatException("raster dimensions overflow " + - "array bounds"); - } - if (strictCheck) { - if (height > 1) { - lastbit = width * pixelBitStride - 1; - if (lastbit / 8 >= scanlineStride) { - throw new RasterFormatException("data for adjacent" + - " scanlines overlaps"); - } - } - } - } - - public String toString() { - return new String ("BytePackedRaster: width = "+width+" height = "+height - +" #channels "+numBands - +" xOff = "+sampleModelTranslateX - +" yOff = "+sampleModelTranslateY); - } -} |