auto import from //depot/cupcake/@135843
This commit is contained in:
The Android Open Source Project
@@ -1,481 +0,0 @@
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/*
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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.gl.image.DataBufferListener;
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import org.apache.harmony.awt.internal.nls.Messages;
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/**
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* The Class DataBuffer is a wrapper class for a data array to be used for the
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* situation where a suite of functionality acts on a set of data in a
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* consistent way even though the primitive type of the data may vary from one
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* use to the next.
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*
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* @since Android 1.0
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*/
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public abstract class DataBuffer {
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/**
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* The Constant TYPE_BYTE.
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*/
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public static final int TYPE_BYTE = 0;
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/**
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* The Constant TYPE_USHORT.
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*/
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public static final int TYPE_USHORT = 1;
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/**
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* The Constant TYPE_SHORT.
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*/
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public static final int TYPE_SHORT = 2;
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/**
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* The Constant TYPE_INT.
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*/
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public static final int TYPE_INT = 3;
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/**
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* The Constant TYPE_FLOAT.
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*/
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public static final int TYPE_FLOAT = 4;
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/**
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* The Constant TYPE_DOUBLE.
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*/
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public static final int TYPE_DOUBLE = 5;
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/**
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* The Constant TYPE_UNDEFINED.
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*/
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public static final int TYPE_UNDEFINED = 32;
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/**
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* The data type indicates the primitive type of the data in this
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* DataBuffer.
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*/
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protected int dataType;
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/**
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* The number of data arrays in this DataBuffer.
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*/
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protected int banks;
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/**
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* The starting index for reading the data from the first (or only) internal
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* data array.
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*/
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protected int offset;
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/**
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* The length (number of elements) of the data arrays.
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*/
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protected int size;
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/**
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* The starting indices for reading the data from the internal data arrays.
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*/
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protected int offsets[];
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/**
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* The data changed.
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*/
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boolean dataChanged = true;
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/**
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* The data taken.
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*/
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boolean dataTaken = false;
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/**
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* The listener.
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*/
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DataBufferListener listener;
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static {
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AwtImageBackdoorAccessorImpl.init();
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}
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/**
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* Instantiates a new data buffer.
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*
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* @param dataType
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* the data type.
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* @param size
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* the length (number of elements) of the data arrays.
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* @param numBanks
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* the number of data arrays to create.
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* @param offsets
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* the starting indices for reading the data from the internal
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* data arrays.
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*/
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protected DataBuffer(int dataType, int size, int numBanks, int[] offsets) {
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this.dataType = dataType;
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this.size = size;
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this.banks = numBanks;
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this.offsets = offsets.clone();
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this.offset = offsets[0];
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}
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/**
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* Instantiates a new data buffer with all of the data arrays starting at
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* the same index.
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*
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* @param dataType
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* the data type.
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* @param size
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* the length (number of elements) of the data arrays.
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* @param numBanks
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* the number of data arrays to create.
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* @param offset
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* the offset to use for all of the data arrays.
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*/
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protected DataBuffer(int dataType, int size, int numBanks, int offset) {
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this.dataType = dataType;
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this.size = size;
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this.banks = numBanks;
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this.offset = offset;
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this.offsets = new int[numBanks];
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int i = 0;
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while (i < numBanks) {
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offsets[i++] = offset;
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}
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}
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/**
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* Instantiates a new data buffer with all of the data arrays read from the
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* beginning (at offset zero).
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*
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* @param dataType
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* the data type.
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* @param size
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* the length (number of elements) of the data arrays.
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* @param numBanks
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* the number of data arrays to create.
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*/
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protected DataBuffer(int dataType, int size, int numBanks) {
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this.dataType = dataType;
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this.size = size;
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this.banks = numBanks;
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this.offset = 0;
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this.offsets = new int[numBanks];
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}
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/**
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* Instantiates a new data buffer with one internal data array read from the
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* beginning (at offset zero).
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*
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* @param dataType
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* the data type.
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* @param size
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* the length (number of elements) of the data arrays.
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*/
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protected DataBuffer(int dataType, int size) {
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this.dataType = dataType;
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this.size = size;
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this.banks = 1;
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this.offset = 0;
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this.offsets = new int[1];
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}
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/**
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* Sets the data value in the specified array at the specified index.
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*
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* @param bank
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* the internal array to the data to.
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* @param i
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* the index within the array where the data should be written.
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* @param val
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* the value to write into the array.
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*/
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public abstract void setElem(int bank, int i, int val);
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/**
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* Sets the float data value in the specified array at the specified index.
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*
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* @param bank
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* the internal array to the data to.
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* @param i
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* the index within the array where the data should be written.
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* @param val
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* the value to write into the array.
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*/
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public void setElemFloat(int bank, int i, float val) {
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setElem(bank, i, (int)val);
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}
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/**
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* Sets the double data value in the specified array at the specified index.
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*
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* @param bank
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* the internal array to the data to.
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* @param i
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* the index within the array where the data should be written.
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* @param val
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* the value to write into the array.
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*/
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public void setElemDouble(int bank, int i, double val) {
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setElem(bank, i, (int)val);
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}
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/**
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* Sets the data value in the first array at the specified index.
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*
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* @param i
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* the index within the array where the data should be written.
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* @param val
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* the value to write into the array.
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*/
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public void setElem(int i, int val) {
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setElem(0, i, val);
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}
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/**
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* Gets the data value from the specified data array at the specified index.
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*
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* @param bank
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* the data array to read from.
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* @param i
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* the index within the array where the data should be read.
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* @return the data element.
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*/
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public abstract int getElem(int bank, int i);
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/**
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* Gets the float-type data value from the specified data array at the
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* specified index.
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*
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* @param bank
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* the data array to read from.
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* @param i
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* the index within the array where the data should be read.
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* @return the data element.
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*/
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public float getElemFloat(int bank, int i) {
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return getElem(bank, i);
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}
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/**
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* Gets the double-type data value from the specified data array at the
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* specified index.
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*
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* @param bank
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* the data array to read from.
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* @param i
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* the index within the array where the data should be read.
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* @return the data element.
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*/
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public double getElemDouble(int bank, int i) {
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return getElem(bank, i);
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}
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/**
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* Sets the float data value in the first array at the specified index.
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*
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* @param i
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* the index within the array where the data should be written.
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* @param val
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* the value to write into the array.
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*/
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public void setElemFloat(int i, float val) {
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setElemFloat(0, i, val);
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}
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/**
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* Sets the double data value in the first array at the specified index.
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*
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* @param i
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* the index within the array where the data should be written.
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* @param val
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* the value to write into the array.
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*/
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public void setElemDouble(int i, double val) {
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setElemDouble(0, i, val);
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}
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/**
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* Gets the data value from the first data array at the specified index and
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* returns it as an integer.
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*
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* @param i
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* the index within the array where the data should be read.
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* @return the data element.
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*/
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public int getElem(int i) {
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return getElem(0, i);
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}
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/**
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* Gets the data value from the first data array at the specified index and
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* returns it as a float.
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*
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* @param i
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* the index within the array where the data should be read.
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* @return the data element.
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*/
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public float getElemFloat(int i) {
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return getElem(0, i);
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}
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/**
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* Gets the data value from the first data array at the specified index and
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* returns it as a double.
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*
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* @param i
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* the index within the array where the data should be read.
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* @return the data element.
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*/
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public double getElemDouble(int i) {
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return getElem(i);
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}
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/**
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* Gets the array giving the offsets corresponding to the internal data
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* arrays.
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*
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* @return the array of offsets.
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*/
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public int[] getOffsets() {
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return offsets;
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}
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/**
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* Gets the size in bits of the primitive data type.
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*
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* @return the size in bits of the primitive data type.
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*/
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public int getSize() {
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return size;
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}
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/**
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* Gets the offset corresponding to the first internal data array.
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*
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* @return the offset.
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*/
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public int getOffset() {
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return offset;
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}
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/**
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* Gets the number of data arrays in this DataBuffer.
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*
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* @return the number of data arrays.
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*/
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public int getNumBanks() {
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return banks;
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}
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/**
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* Gets the primitive type of this buffer's data.
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*
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* @return the data type.
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*/
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public int getDataType() {
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return this.dataType;
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}
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/**
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* Gets the size in bits of the primitive data type.
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*
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* @param type
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* the primitive type.
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* @return the size in bits of the primitive data type.
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*/
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public static int getDataTypeSize(int type) {
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switch (type) {
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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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// awt.22C=Unknown data type {0}
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throw new IllegalArgumentException(Messages.getString("awt.22C", type)); //$NON-NLS-1$
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}
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}
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/**
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* Notifies the listener that the data has changed.
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*/
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void notifyChanged() {
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if (listener != null && !dataChanged) {
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dataChanged = true;
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listener.dataChanged();
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}
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}
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/**
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* Notifies the listener that the data has been released.
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*/
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void notifyTaken() {
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if (listener != null && !dataTaken) {
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dataTaken = true;
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listener.dataTaken();
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}
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}
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/**
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* Release the data.
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*/
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void releaseData() {
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if (listener != null && dataTaken) {
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dataTaken = false;
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listener.dataReleased();
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}
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}
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/**
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* Adds the data buffer listener.
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*
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* @param listener
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* the listener.
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*/
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void addDataBufferListener(DataBufferListener listener) {
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this.listener = listener;
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}
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/**
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* Removes the data buffer listener.
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*/
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void removeDataBufferListener() {
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listener = null;
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}
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/**
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* Validate.
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*/
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void validate() {
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dataChanged = false;
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}
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}
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Block a user