426 lines
13 KiB
Java
426 lines
13 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @author Igor V. Stolyarov
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* @version $Revision$
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*/
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package java.awt.image;
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import org.apache.harmony.awt.internal.nls.Messages;
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/**
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* The BandedSampleModel class provides samples of pixels in an image which is
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* stored in a band interleaved method. Each pixel's sample takes one data
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* element of the DataBuffer. The pixel stride for a BandedSampleModel is one.
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*
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* @since Android 1.0
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*/
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public final class BandedSampleModel extends ComponentSampleModel {
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/**
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* Creates the indices.
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*
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* @param numBands
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* the num bands.
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* @return the int[].
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*/
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private static int[] createIndices(int numBands) {
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int indices[] = new int[numBands];
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for (int i = 0; i < numBands; i++) {
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indices[i] = i;
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}
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return indices;
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}
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/**
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* Creates the offsets.
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*
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* @param numBands
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* the num bands.
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* @return the int[].
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*/
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private static int[] createOffsets(int numBands) {
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int offsets[] = new int[numBands];
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for (int i = 0; i < numBands; i++) {
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offsets[i] = 0;
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}
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return offsets;
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}
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/**
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* Instantiates a new BandedSampleModel object with the specified data type
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* of samples, the width, height and bands number of image data.
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*
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* @param dataType
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* the data type of samples.
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* @param w
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* the width of image data.
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* @param h
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* the height of image data.
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* @param numBands
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* the number of bands.
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*/
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public BandedSampleModel(int dataType, int w, int h, int numBands) {
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this(dataType, w, h, w, BandedSampleModel.createIndices(numBands), BandedSampleModel
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.createOffsets(numBands));
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}
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/**
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* Instantiates a new BandedSampleModel object with the specified data type
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* of samples, the width, height and bands number of image data.
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*
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* @param dataType
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* the data type of samples.
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* @param w
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* the width of image data.
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* @param h
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* the height of image data.
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* @param scanlineStride
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* the scanline stride of the of the image data.
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* @param bankIndices
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* the array of the bank indices.
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* @param bandOffsets
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* the array of the band offsets.
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*/
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public BandedSampleModel(int dataType, int w, int h, int scanlineStride, int bankIndices[],
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int bandOffsets[]) {
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super(dataType, w, h, 1, scanlineStride, bankIndices, bandOffsets);
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}
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@Override
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public SampleModel createCompatibleSampleModel(int w, int h) {
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return new BandedSampleModel(dataType, w, h, w, bankIndices, bandOffsets);
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}
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@Override
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public DataBuffer createDataBuffer() {
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DataBuffer data = null;
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int size = scanlineStride * height;
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switch (dataType) {
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case DataBuffer.TYPE_BYTE:
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data = new DataBufferByte(size, numBanks);
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break;
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case DataBuffer.TYPE_SHORT:
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case DataBuffer.TYPE_USHORT:
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data = new DataBufferShort(size, numBanks);
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break;
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case DataBuffer.TYPE_INT:
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data = new DataBufferInt(size, numBanks);
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break;
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case DataBuffer.TYPE_FLOAT:
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data = new DataBufferFloat(size, numBanks);
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break;
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case DataBuffer.TYPE_DOUBLE:
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data = new DataBufferDouble(size, numBanks);
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break;
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}
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return data;
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}
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@Override
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public SampleModel createSubsetSampleModel(int[] bands) {
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if (bands.length > numBands) {
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// awt.64=The number of the bands in the subset is greater than the
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// number of bands in the sample model
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throw new RasterFormatException(Messages.getString("awt.64")); //$NON-NLS-1$
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}
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int indices[] = new int[bands.length];
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int offsets[] = new int[bands.length];
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for (int i = 0; i < bands.length; i++) {
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indices[i] = bankIndices[bands[i]];
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offsets[i] = bandOffsets[bands[i]];
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}
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return new BandedSampleModel(dataType, width, height, scanlineStride, indices, offsets);
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}
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@Override
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public Object getDataElements(int x, int y, Object obj, DataBuffer data) {
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switch (dataType) {
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case DataBuffer.TYPE_BYTE: {
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byte bdata[];
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if (obj == null) {
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bdata = new byte[numBands];
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} else {
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bdata = (byte[])obj;
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}
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for (int i = 0; i < numBands; i++) {
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bdata[i] = (byte)getSample(x, y, i, data);
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}
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obj = bdata;
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break;
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}
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case DataBuffer.TYPE_SHORT:
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case DataBuffer.TYPE_USHORT: {
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short sdata[];
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if (obj == null) {
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sdata = new short[numBands];
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} else {
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sdata = (short[])obj;
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}
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for (int i = 0; i < numBands; i++) {
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sdata[i] = (short)getSample(x, y, i, data);
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}
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obj = sdata;
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break;
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}
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case DataBuffer.TYPE_INT: {
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int idata[];
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if (obj == null) {
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idata = new int[numBands];
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} else {
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idata = (int[])obj;
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}
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for (int i = 0; i < numBands; i++) {
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idata[i] = getSample(x, y, i, data);
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}
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obj = idata;
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break;
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}
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case DataBuffer.TYPE_FLOAT: {
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float fdata[];
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if (obj == null) {
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fdata = new float[numBands];
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} else {
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fdata = (float[])obj;
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}
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for (int i = 0; i < numBands; i++) {
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fdata[i] = getSampleFloat(x, y, i, data);
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}
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obj = fdata;
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break;
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}
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case DataBuffer.TYPE_DOUBLE: {
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double ddata[];
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if (obj == null) {
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ddata = new double[numBands];
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} else {
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ddata = (double[])obj;
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}
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for (int i = 0; i < numBands; i++) {
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ddata[i] = getSampleDouble(x, y, i, data);
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}
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obj = ddata;
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break;
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}
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}
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return obj;
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}
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@Override
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public int[] getPixel(int x, int y, int iArray[], DataBuffer data) {
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int pixel[];
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if (iArray == null) {
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pixel = new int[numBands];
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} else {
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pixel = iArray;
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}
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for (int i = 0; i < numBands; i++) {
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pixel[i] = getSample(x, y, i, data);
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}
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return pixel;
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}
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@Override
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public int getSample(int x, int y, int b, DataBuffer data) {
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if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
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// awt.63=Coordinates are not in bounds
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throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
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}
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return data.getElem(bankIndices[b], y * scanlineStride + x + bandOffsets[b]);
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}
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@Override
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public double getSampleDouble(int x, int y, int b, DataBuffer data) {
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if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
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// awt.63=Coordinates are not in bounds
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throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
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}
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return data.getElemDouble(bankIndices[b], y * scanlineStride + x + bandOffsets[b]);
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}
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@Override
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public float getSampleFloat(int x, int y, int b, DataBuffer data) {
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if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
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// awt.63=Coordinates are not in bounds
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throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
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}
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return data.getElemFloat(bankIndices[b], y * scanlineStride + x + bandOffsets[b]);
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}
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@Override
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public int[] getSamples(int x, int y, int w, int h, int b, int iArray[], DataBuffer data) {
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int samples[];
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int idx = 0;
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if (iArray == null) {
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samples = new int[w * h];
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} else {
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samples = iArray;
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}
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for (int i = y; i < y + h; i++) {
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for (int j = x; j < x + w; j++) {
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samples[idx++] = getSample(j, i, b, data);
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}
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}
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return samples;
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}
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@Override
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public int hashCode() {
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int hash = super.hashCode();
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int tmp = hash >>> 8;
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hash <<= 8;
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hash |= tmp;
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return hash ^ 0x55;
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}
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@Override
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public void setDataElements(int x, int y, Object obj, DataBuffer data) {
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switch (dataType) {
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case DataBuffer.TYPE_BYTE:
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byte bdata[] = (byte[])obj;
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for (int i = 0; i < numBands; i++) {
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setSample(x, y, i, bdata[i] & 0xff, data);
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}
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break;
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case DataBuffer.TYPE_SHORT:
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case DataBuffer.TYPE_USHORT:
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short sdata[] = (short[])obj;
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for (int i = 0; i < numBands; i++) {
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setSample(x, y, i, sdata[i] & 0xffff, data);
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}
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break;
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case DataBuffer.TYPE_INT:
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int idata[] = (int[])obj;
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for (int i = 0; i < numBands; i++) {
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setSample(x, y, i, idata[i], data);
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}
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break;
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case DataBuffer.TYPE_FLOAT:
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float fdata[] = (float[])obj;
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for (int i = 0; i < numBands; i++) {
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setSample(x, y, i, fdata[i], data);
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}
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break;
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case DataBuffer.TYPE_DOUBLE:
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double ddata[] = (double[])obj;
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for (int i = 0; i < numBands; i++) {
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setSample(x, y, i, ddata[i], data);
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}
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break;
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}
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}
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@Override
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public void setPixel(int x, int y, int iArray[], DataBuffer data) {
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for (int i = 0; i < numBands; i++) {
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setSample(x, y, i, iArray[i], data);
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}
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}
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@Override
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public void setPixels(int x, int y, int w, int h, int iArray[], DataBuffer data) {
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int idx = 0;
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for (int i = y; i < y + h; i++) {
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for (int j = x; j < x + w; j++) {
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for (int n = 0; n < numBands; n++) {
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setSample(j, i, n, iArray[idx++], data);
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}
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}
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}
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}
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@Override
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public void setSample(int x, int y, int b, double s, DataBuffer data) {
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if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
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// awt.63=Coordinates are not in bounds
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throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
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}
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data.setElemDouble(bankIndices[b], y * scanlineStride + x + bandOffsets[b], s);
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}
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@Override
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public void setSample(int x, int y, int b, float s, DataBuffer data) {
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if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
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// awt.63=Coordinates are not in bounds
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throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
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}
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data.setElemFloat(bankIndices[b], y * scanlineStride + x + bandOffsets[b], s);
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}
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@Override
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public void setSample(int x, int y, int b, int s, DataBuffer data) {
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if (x < 0 || y < 0 || x >= this.width || y >= this.height) {
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// awt.63=Coordinates are not in bounds
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throw new ArrayIndexOutOfBoundsException(Messages.getString("awt.63")); //$NON-NLS-1$
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}
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data.setElem(bankIndices[b], y * scanlineStride + x + bandOffsets[b], s);
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}
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@Override
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public void setSamples(int x, int y, int w, int h, int b, int iArray[], DataBuffer data) {
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int idx = 0;
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for (int i = y; i < y + h; i++) {
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for (int j = x; j < x + w; j++) {
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setSample(j, i, b, iArray[idx++], data);
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}
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}
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}
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}
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