| /* Copyright (C) 2000 Free Software Foundation |
| |
| This file is part of libgcj. |
| |
| This software is copyrighted work licensed under the terms of the |
| Libgcj License. Please consult the file "LIBGCJ_LICENSE" for |
| details. */ |
| |
| package java.awt.image; |
| |
| /** |
| * @author Rolf W. Rasmussen <rolfwr@ii.uib.no> |
| */ |
| public abstract class SampleModel |
| { |
| /** Width of image described. */ |
| protected int width; |
| |
| /** Height of image described. */ |
| protected int height; |
| |
| /** Number of bands in the image described. */ |
| protected int numBands; |
| |
| /** |
| * The DataBuffer type that is used to store the data of the image |
| * described. |
| */ |
| protected int dataType; |
| |
| public SampleModel(int dataType, int w, int h, int numBands) |
| { |
| if ((w<=0) || (h<=0)) throw new IllegalArgumentException(); |
| |
| // FIXME: How can an int be greater than Integer.MAX_VALUE? |
| // FIXME: How do we identify an unsupported data type? |
| |
| this.dataType = dataType; |
| this.width = w; |
| this.height = h; |
| this.numBands = numBands; |
| } |
| |
| public final int getWidth() |
| { |
| return width; |
| } |
| |
| public final int getHeight() |
| { |
| return height; |
| } |
| |
| public final int getNumBands() |
| { |
| return numBands; |
| } |
| |
| public abstract int getNumDataElements(); |
| |
| public final int getDataType() |
| { |
| return dataType; |
| } |
| |
| public int getTransferType() |
| { |
| // FIXME: Is this a reasonable default implementation? |
| return dataType; |
| } |
| |
| public int[] getPixel(int x, int y, int[] iArray, DataBuffer data) |
| { |
| if (iArray == null) iArray = new int[numBands]; |
| for (int b=0; b<numBands; b++) iArray[b] = getSample(x, y, b, data); |
| return iArray; |
| } |
| |
| /** |
| * |
| * This method is provided as a faster alternative to getPixel(), |
| * that can be used when there is no need to decode the pixel into |
| * seperate sample values. |
| * |
| * @param obj An array to return the pixel data in. If null, an |
| * array of the right type and size will be created. |
| * |
| * @return A single pixel as an array object of a primitive type, |
| * based on the transfer type. Eg. if transfer type is |
| * DataBuffer.TYPE_USHORT, then a short[] object is returned. |
| */ |
| public abstract Object getDataElements(int x, int y, Object obj, |
| DataBuffer data); |
| |
| |
| public Object getDataElements(int x, int y, int w, int h, Object obj, |
| DataBuffer data) |
| { |
| int size = w*h; |
| int numDataElements = getNumDataElements(); |
| int dataSize = numDataElements*size; |
| |
| if (obj == null) |
| { |
| switch (getTransferType()) |
| { |
| case DataBuffer.TYPE_BYTE: |
| obj = new byte[dataSize]; |
| break; |
| case DataBuffer.TYPE_USHORT: |
| obj = new short[dataSize]; |
| break; |
| case DataBuffer.TYPE_INT: |
| obj = new int[dataSize]; |
| break; |
| default: |
| // Seems like the only sensible thing to do. |
| throw new ClassCastException(); |
| } |
| } |
| Object pixelData = null; |
| int outOffset = 0; |
| for (int yy = y; yy<(y+h); yy++) |
| { |
| for (int xx = x; xx<(x+w); xx++) |
| { |
| pixelData = getDataElements(xx, yy, pixelData, data); |
| System.arraycopy(pixelData, 0, obj, outOffset, |
| numDataElements); |
| outOffset += numDataElements; |
| } |
| } |
| return obj; |
| } |
| |
| public abstract void setDataElements(int x, int y, Object obj, |
| DataBuffer data); |
| |
| public void setDataElements(int x, int y, int w, int h, |
| Object obj, DataBuffer data) |
| { |
| int size = w*h; |
| int numDataElements = getNumDataElements(); |
| int dataSize = numDataElements*size; |
| |
| Object pixelData; |
| switch (getTransferType()) |
| { |
| case DataBuffer.TYPE_BYTE: |
| pixelData = new byte[numDataElements]; |
| break; |
| case DataBuffer.TYPE_USHORT: |
| pixelData = new short[numDataElements]; |
| break; |
| case DataBuffer.TYPE_INT: |
| pixelData = new int[numDataElements]; |
| break; |
| default: |
| // Seems like the only sensible thing to do. |
| throw new ClassCastException(); |
| } |
| int inOffset = 0; |
| |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| System.arraycopy(obj, inOffset, pixelData, 0, |
| numDataElements); |
| setDataElements(xx, yy, pixelData, data); |
| inOffset += numDataElements; |
| } |
| } |
| } |
| |
| public float[] getPixel(int x, int y, float[] fArray, DataBuffer data) |
| { |
| if (fArray == null) fArray = new float[numBands]; |
| |
| for (int b=0; b<numBands; b++) |
| { |
| fArray[0] = getSampleFloat(x, y, b, data); |
| } |
| return fArray; |
| } |
| |
| public double[] getPixel(int x, int y, double[] dArray, DataBuffer data) { |
| if (dArray == null) dArray = new double[numBands]; |
| for (int b=0; b<numBands; b++) |
| { |
| dArray[0] = getSampleDouble(x, y, b, data); |
| } |
| return dArray; |
| } |
| |
| /* FIXME: Should it return a banded or pixel interleaved array of |
| samples? (Assume interleaved.) */ |
| public int[] getPixels(int x, int y, int w, int h, int[] iArray, |
| DataBuffer data) |
| { |
| int size = w*h; |
| int outOffset = 0; |
| int[] pixel = null; |
| if (iArray == null) iArray = new int[w*h*numBands]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| getPixel(xx, yy, pixel, data); |
| System.arraycopy(pixel, 0, iArray, outOffset, numBands); |
| outOffset += numBands; |
| } |
| } |
| return iArray; |
| } |
| |
| /* FIXME: Should it return a banded or pixel interleaved array of |
| samples? (Assume interleaved.) */ |
| public float[] getPixels(int x, int y, int w, int h, float[] fArray, |
| DataBuffer data) |
| { |
| int size = w*h; |
| int outOffset = 0; |
| float[] pixel = null; |
| if (fArray == null) fArray = new float[w*h*numBands]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| getPixel(xx, yy, pixel, data); |
| System.arraycopy(pixel, 0, fArray, outOffset, numBands); |
| outOffset += numBands; |
| } |
| } |
| return fArray; |
| } |
| |
| /* FIXME: Should it return a banded or pixel interleaved array of |
| samples? (Assume interleaved.) */ |
| public double[] getPixels(int x, int y, int w, int h, double[] dArray, |
| DataBuffer data) |
| { |
| int size = w*h; |
| int outOffset = 0; |
| double[] pixel = null; |
| if (dArray == null) dArray = new double[w*h*numBands]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| getPixel(xx, yy, pixel, data); |
| System.arraycopy(pixel, 0, dArray, outOffset, numBands); |
| outOffset += numBands; |
| } |
| } |
| return dArray; |
| } |
| |
| public abstract int getSample(int x, int y, int b, DataBuffer data); |
| |
| public float getSampleFloat(int x, int y, int b, DataBuffer data) |
| { |
| return getSample(x, y, b, data); |
| } |
| |
| public double getSampleDouble(int x, int y, int b, DataBuffer data) |
| { |
| return getSampleFloat(x, y, b, data); |
| } |
| |
| public int[] getSamples(int x, int y, int w, int h, int b, |
| int[] iArray, DataBuffer data) |
| { |
| int size = w*h; |
| int outOffset = 0; |
| if (iArray == null) iArray = new int[size]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| iArray[outOffset++] = getSample(xx, yy, b, data); |
| } |
| } |
| return iArray; |
| } |
| |
| public float[] getSamples(int x, int y, int w, int h, int b, |
| float[] fArray, DataBuffer data) |
| { |
| int size = w*h; |
| int outOffset = 0; |
| if (fArray == null) fArray = new float[size]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| fArray[outOffset++] = getSampleFloat(xx, yy, b, data); |
| } |
| } |
| return fArray; |
| } |
| |
| public double[] getSamples(int x, int y, int w, int h, int b, |
| double[] dArray, DataBuffer data) |
| { |
| int size = w*h; |
| int outOffset = 0; |
| if (dArray == null) dArray = new double[size]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| dArray[outOffset++] = getSampleDouble(xx, yy, b, data); |
| } |
| } |
| return dArray; |
| } |
| |
| public void setPixel(int x, int y, int[] iArray, DataBuffer data) |
| { |
| for (int b=0; b<numBands; b++) setSample(x, y, b, iArray[b], data); |
| } |
| |
| public void setPixel(int x, int y, float[] fArray, DataBuffer data) |
| { |
| for (int b=0; b<numBands; b++) setSample(x, y, b, fArray[b], data); |
| } |
| |
| public void setPixel(int x, int y, double[] dArray, DataBuffer data) |
| { |
| for (int b=0; b<numBands; b++) setSample(x, y, b, dArray[b], data); |
| } |
| |
| public void setPixels(int x, int y, int w, int h, int[] iArray, |
| DataBuffer data) |
| { |
| int inOffset = 0; |
| int[] pixel = new int[numBands]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| System.arraycopy(iArray, inOffset, pixel, 0, numBands); |
| setPixel(xx, yy, pixel, data); |
| inOffset += numBands; |
| } |
| } |
| } |
| |
| public void setPixels(int x, int y, int w, int h, float[] fArray, |
| DataBuffer data) |
| { |
| int inOffset = 0; |
| float[] pixel = new float[numBands]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| System.arraycopy(fArray, inOffset, pixel, 0, numBands); |
| setPixel(xx, yy, pixel, data); |
| inOffset += numBands; |
| } |
| } |
| } |
| |
| public void setPixels(int x, int y, int w, int h, double[] dArray, |
| DataBuffer data) |
| { |
| int inOffset = 0; |
| double[] pixel = new double[numBands]; |
| for (int yy=y; yy<(y+h); yy++) |
| { |
| for (int xx=x; xx<(x+w); xx++) |
| { |
| System.arraycopy(dArray, inOffset, pixel, 0, numBands); |
| setPixel(xx, yy, pixel, data); |
| inOffset += numBands; |
| } |
| } |
| } |
| |
| public abstract void setSample(int x, int y, int b, int s, |
| DataBuffer data); |
| |
| public void setSample(int x, int y, int b, float s, |
| DataBuffer data) |
| { |
| setSample(x, y, b, (int) s, data); |
| } |
| |
| public void setSample(int x, int y, int b, double s, |
| DataBuffer data) |
| { |
| setSample(x, y, b, (float) s, data); |
| } |
| |
| public void setSamples(int x, int y, int w, int h, int b, |
| int[] iArray, DataBuffer data) |
| { |
| int size = w*h; |
| int inOffset = 0; |
| for (int yy=y; yy<(y+h); yy++) |
| for (int xx=x; xx<(x+w); xx++) |
| setSample(xx, yy, b, iArray[inOffset++], data); |
| } |
| |
| public void setSamples(int x, int y, int w, int h, int b, |
| float[] fArray, DataBuffer data) |
| { |
| int size = w*h; |
| int inOffset = 0; |
| for (int yy=y; yy<(y+h); yy++) |
| for (int xx=x; xx<(x+w); xx++) |
| setSample(xx, yy, b, fArray[inOffset++], data); |
| |
| } |
| |
| public void setSamples(int x, int y, int w, int h, int b, |
| double[] dArray, DataBuffer data) { |
| int size = w*h; |
| int inOffset = 0; |
| for (int yy=y; yy<(y+h); yy++) |
| for (int xx=x; xx<(x+w); xx++) |
| setSample(xx, yy, b, dArray[inOffset++], data); |
| } |
| |
| public abstract SampleModel createCompatibleSampleModel(int w, int h); |
| |
| public abstract SampleModel createSubsetSampleModel(int[] bands); |
| |
| public abstract DataBuffer createDataBuffer(); |
| |
| public abstract int[] getSampleSize(); |
| |
| public abstract int getSampleSize(int band); |
| } |