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69b1b29156
2000-07-23 Rolf W. Rasmussen <rolfwr@ii.uib.no> * libjava/java/awt/image/ColorModel.java: New file, replaces the stub libjava/java/awt/ColorModel.java which was located in the wrong package. * libjava/java/awt/image/ComponentColorModel.java: New file. * libjava/java/awt/image/ComponentSampleModel.java: New file. * libjava/java/awt/image/DataBuffer.java: New file. * libjava/java/awt/image/DataBufferByte.java: New file. * libjava/java/awt/image/DataBufferInt.java: New file. * libjava/java/awt/image/DataBufferUShort.java: New file. * libjava/java/awt/image/DirectColorModel.java: New file. * libjava/java/awt/image/PackedColorModel.java: New file. * libjava/java/awt/image/Raster.java: New file. * libjava/java/awt/image/SampleModel.java: New file. * libjava/java/awt/image/SinglePixelPackedSampleModel.java: New file. * libjava/java/awt/image/IndexColorModel.java: New file. * libjava/java/awt/image/ImageConsumer.java: Removed import of java.awt.ColorModel stub. * gnu/gcj/util/BitMaskExtent.java: New file, utility class. * gnu/gcj/util/Buffers.java: New file, utility class. * libjava/Makefile.am: Updated to include new files. * libjava/Makefile.in: Rebuilt. From-SVN: r35245
178 lines
3.6 KiB
Java
178 lines
3.6 KiB
Java
/* Copyright © 2000 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.awt.image;
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/**
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* Class that manages arrays of data elements. A data buffer consists
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* of one or more banks. A bank is a continuous region of data
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* elements.
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*
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* @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
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*/
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public abstract class DataBuffer
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{
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public static final int TYPE_BYTE = 0;
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public static final int TYPE_USHORT = 1;
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public static final int TYPE_SHORT = 2;
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public static final int TYPE_INT = 3;
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public static final int TYPE_FLOAT = 4;
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public static final int TYPE_DOUBLE = 5;
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public static final int TYPE_UNDEFINED = 32;
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/** The type of the data elements stored in the data buffer. */
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protected int dataType;
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/** The number of banks in this buffer. */
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protected int banks = 1;
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/** Offset into the default (0'th) bank). */
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protected int offset; // FIXME: Is offsets[0] always mirrored in offset?
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/** The size of the banks. */
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protected int size;
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/** Offset into each bank. */
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protected int[] offsets;
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protected DataBuffer(int dataType, int size)
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{
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this.dataType = dataType;
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this.size = size;
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}
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protected DataBuffer(int dataType, int size, int numBanks) {
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this(dataType, size);
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banks = numBanks;
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offsets = new int[numBanks];
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}
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protected DataBuffer(int dataType, int size, int numBanks, int offset) {
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this(dataType, size, numBanks);
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java.util.Arrays.fill(offsets, offset);
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this.offset = offset;
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}
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protected DataBuffer(int dataType, int size, int numBanks, int[] offsets) {
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this(dataType, size);
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if (numBanks != offsets.length)
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throw new ArrayIndexOutOfBoundsException();
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banks = numBanks;
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this.offsets = offsets;
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offset = offsets[0];
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}
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public static int getDataTypeSize(int dataType) {
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// Maybe this should be a lookup table instead.
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switch (dataType)
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{
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case TYPE_BYTE:
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return 8;
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case TYPE_USHORT:
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case TYPE_SHORT:
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return 16;
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case TYPE_INT:
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case TYPE_FLOAT:
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return 32;
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case TYPE_DOUBLE:
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return 64;
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default:
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throw new IllegalArgumentException();
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}
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}
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public int getDataType()
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{
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return dataType;
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}
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public int getSize()
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{
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return size;
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}
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public int getOffset()
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{
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return offset;
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}
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public int[] getOffsets()
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{
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if (offsets == null)
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{
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// is this necessary?
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offsets = new int[1];
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offsets[0] = offset;
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}
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return offsets;
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}
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public int getNumBanks()
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{
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return banks;
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}
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public int getElem(int i)
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{
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return getElem(0, i);
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}
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public abstract int getElem(int bank, int i);
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public void setElem(int i, int val)
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{
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setElem(0, i, val);
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}
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public abstract void setElem(int bank, int i, int val);
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public float getElemFloat(int i)
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{
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return getElem(i);
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}
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public float getElemFloat(int bank, int i)
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{
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return getElem(bank, i);
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}
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public void setElemFloat(int i, float val)
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{
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setElem(i, (int) val);
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}
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public void setElemFloat(int bank, int i, float val)
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{
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setElem(bank, i, (int) val);
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}
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public double getElemDouble(int i)
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{
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return getElem(i);
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}
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public double getElemDouble(int bank, int i)
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{
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return getElem(bank, i);
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}
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public void setElemDouble(int i, double val)
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{
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setElem(i, (int) val);
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}
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public void setElemDouble(int bank, int i, double val)
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{
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setElem(bank, i, (int) val);
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}
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}
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