1 /*
2  * Copyright (C) 2006 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.internal.telephony.cat;
18 
19 /**
20  * {@hide}
21  */
22 public class ImageDescriptor {
23     // members
24     int mWidth;
25     int mHeight;
26     int mCodingScheme;
27     int mImageId;
28     int mHighOffset;
29     int mLowOffset;
30     int mLength;
31 
32     // constants
33     static final int CODING_SCHEME_BASIC = 0x11;
34     static final int CODING_SCHEME_COLOUR = 0x21;
35 
36     // public static final int ID_LENGTH = 9;
37     // ID_LENGTH substituted by IccFileHandlerBase.GET_RESPONSE_EF_IMG_SIZE_BYTES
38 
ImageDescriptor()39     ImageDescriptor() {
40         mWidth = 0;
41         mHeight = 0;
42         mCodingScheme = 0;
43         mImageId = 0;
44         mHighOffset = 0;
45         mLowOffset = 0;
46         mLength = 0;
47     }
48 
49     /**
50      * Extract descriptor information about image instance.
51      *
52      * @param rawData
53      * @param valueIndex
54      * @return ImageDescriptor
55      */
parse(byte[] rawData, int valueIndex)56     static ImageDescriptor parse(byte[] rawData, int valueIndex) {
57         ImageDescriptor d = new ImageDescriptor();
58         try {
59             d.mWidth = rawData[valueIndex++] & 0xff;
60             d.mHeight = rawData[valueIndex++] & 0xff;
61             d.mCodingScheme = rawData[valueIndex++] & 0xff;
62 
63             // parse image id
64             d.mImageId = (rawData[valueIndex++] & 0xff) << 8;
65             d.mImageId |= rawData[valueIndex++] & 0xff;
66             // parse offset
67             d.mHighOffset = (rawData[valueIndex++] & 0xff); // high byte offset
68             d.mLowOffset = rawData[valueIndex++] & 0xff; // low byte offset
69 
70             d.mLength = ((rawData[valueIndex++] & 0xff) << 8 | (rawData[valueIndex++] & 0xff));
71             CatLog.d("ImageDescriptor", "parse; Descriptor : " + d.mWidth + ", " + d.mHeight +
72                     ", " + d.mCodingScheme + ", 0x" + Integer.toHexString(d.mImageId) + ", " +
73                     d.mHighOffset + ", " + d.mLowOffset + ", " + d.mLength);
74         } catch (IndexOutOfBoundsException e) {
75             CatLog.d("ImageDescriptor", "parse; failed parsing image descriptor");
76             d = null;
77         }
78         return d;
79     }
80 }
81