| 1 | package org.farng.mp3.object; |
| 2 | |
| 3 | /** |
| 4 | * ID3v2 and Lyrics3v2 tags have individual fields <code>AbstractMP3Fragment</code>s Then each fragment is broken down |
| 5 | * in to individual <code>AbstractMP3Object</code>s |
| 6 | * |
| 7 | * @author Eric Farng |
| 8 | * @version $Revision: 1.5 $ |
| 9 | */ |
| 10 | public class ObjectBooleanByte extends AbstractMP3Object { |
| 11 | |
| 12 | int bitPosition = -1; |
| 13 | |
| 14 | /** |
| 15 | * Creates a new ObjectBooleanByte object. |
| 16 | */ |
| 17 | public ObjectBooleanByte(final String identifier, final int bitPosition) { |
| 18 | if ((bitPosition < 0) || (bitPosition > 7)) { |
| 19 | throw new IndexOutOfBoundsException("Bit position needs to be from 0 - 7 : " + bitPosition); |
| 20 | } |
| 21 | this.bitPosition = bitPosition; |
| 22 | this.identifier = identifier; |
| 23 | } |
| 24 | |
| 25 | /** |
| 26 | * Creates a new ObjectBooleanByte object. |
| 27 | */ |
| 28 | public ObjectBooleanByte(final ObjectBooleanByte copyObject) { |
| 29 | super(copyObject); |
| 30 | this.bitPosition = copyObject.bitPosition; |
| 31 | } |
| 32 | |
| 33 | public int getBitPosition() { |
| 34 | return this.bitPosition; |
| 35 | } |
| 36 | |
| 37 | public int getSize() { |
| 38 | return 1; |
| 39 | } |
| 40 | |
| 41 | public boolean equals(final Object obj) { |
| 42 | if ((obj instanceof ObjectBooleanByte) == false) { |
| 43 | return false; |
| 44 | } |
| 45 | final ObjectBooleanByte objectBooleanByte = (ObjectBooleanByte) obj; |
| 46 | if (this.bitPosition != objectBooleanByte.bitPosition) { |
| 47 | return false; |
| 48 | } |
| 49 | return super.equals(obj); |
| 50 | } |
| 51 | |
| 52 | public void readByteArray(final byte[] arr, final int offset) { |
| 53 | if (arr == null) { |
| 54 | throw new NullPointerException("Byte array is null"); |
| 55 | } |
| 56 | if ((offset < 0) || (offset >= arr.length)) { |
| 57 | throw new IndexOutOfBoundsException("Offset to byte array is out of bounds: offset = " + |
| 58 | offset + |
| 59 | ", array.length = " + |
| 60 | arr |
| 61 | .length); |
| 62 | } |
| 63 | byte newValue = arr[offset]; |
| 64 | newValue >>= this.bitPosition; |
| 65 | newValue &= 0x1; |
| 66 | this.value = new Boolean(newValue == 1); |
| 67 | } |
| 68 | |
| 69 | public String toString() { |
| 70 | return "" + this.value; |
| 71 | } |
| 72 | |
| 73 | public byte[] writeByteArray() { |
| 74 | final byte[] retValue; |
| 75 | retValue = new byte[1]; |
| 76 | if (this.value != null) { |
| 77 | retValue[0] = (byte) (((Boolean) this.value).booleanValue() ? 1 : 0); |
| 78 | retValue[0] <<= this.bitPosition; |
| 79 | } |
| 80 | return retValue; |
| 81 | } |
| 82 | } |