Android example source code file (ImageDescriptor.java)

This example Android source code file (ImageDescriptor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

coding_scheme_basic, coding_scheme_colour, imagedescripter, imagedescriptor, indexoutofboundsexception

The ImageDescriptor.java Android example source code

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.internal.telephony.cat;

/**
 * {@hide}
 */
public class ImageDescriptor {
    // members
    int width;
    int height;
    int codingScheme;
    int imageId;
    int highOffset;
    int lowOffset;
    int length;

    // constants
    static final int CODING_SCHEME_BASIC = 0x11;
    static final int CODING_SCHEME_COLOUR = 0x21;

    // public static final int ID_LENGTH = 9;
    // ID_LENGTH substituted by IccFileHandlerBase.GET_RESPONSE_EF_IMG_SIZE_BYTES

    ImageDescriptor() {
        width = 0;
        height = 0;
        codingScheme = 0;
        imageId = 0;
        highOffset = 0;
        lowOffset = 0;
        length = 0;
    }

    /**
     * Extract descriptor information about image instance.
     *
     * @param rawData
     * @param valueIndex
     * @return ImageDescriptor
     */
    static ImageDescriptor parse(byte[] rawData, int valueIndex) {
        ImageDescriptor d = new ImageDescriptor();
        try {
            d.width = rawData[valueIndex++] & 0xff;
            d.height = rawData[valueIndex++] & 0xff;
            d.codingScheme = rawData[valueIndex++] & 0xff;

            // parse image id
            d.imageId = (rawData[valueIndex++] & 0xff) << 8;
            d.imageId |= rawData[valueIndex++] & 0xff;
            // parse offset
            d.highOffset = (rawData[valueIndex++] & 0xff); // high byte offset
            d.lowOffset = rawData[valueIndex++] & 0xff; // low byte offset

            d.length = ((rawData[valueIndex++] & 0xff) << 8 | (rawData[valueIndex++] & 0xff));
        } catch (IndexOutOfBoundsException e) {
            CatLog.d("ImageDescripter", "parse; failed parsing image descriptor");
            d = null;
        }
        return d;
    }
}