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/*
* Copyright (C) 2010 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.
*/
/**
* File : NdefRecord.java
* Original-Author : Trusted Logic S.A. (Jeremie Corbier)
* Created : 05-10-2009
*/
package com.trustedlogic.trustednfc.android;
import android.location.Location;
import android.os.Parcel;
import android.os.Parcelable;
/**
* An NDEF record as specified by the <a href="http://www.nfc-forum.org/">NFC
* Forum</a>.
*
* @see NdefMessage
*
* @since AA01.04
* @hide
*/
public class NdefRecord implements Parcelable {
/**
* Type Name Format - Empty record
*/
public static final short TNF_EMPTY = 0x0;
/**
* Type Name Format - NFC Forum-defined type
*/
public static final short TNF_WELL_KNOWN_TYPE = 0x1;
/**
* Type Name Format - RFC2045 MIME type
*/
public static final short TNF_MIME_MEDIA_TYPE = 0x2;
/**
* Type Name Format - Absolute URI
*/
public static final short TNF_ABSOLUTE_URI = 0x3;
/**
* Type Name Format - User-defined type
*/
public static final short TNF_EXTERNAL_TYPE = 0x4;
/**
* Type Name Format - Unknown type
*/
public static final short TNF_UNKNOWN = 0x5;
/**
* Type Name Format - Unchanged. This TNF is used for chunked records, so
* that middle records inherits from the first record's type.
*/
public static final short TNF_UNCHANGED = 0x6;
/**
* NFC Forum-defined Type - Smart Poster
*/
public static final byte[] TYPE_SMART_POSTER = { 0x53, 0x70 };
/**
* NFC Forum-defined Type - Text
*/
public static final byte[] TYPE_TEXT = { 0x54 };
/**
* NFC Forum-defined Type - URI
*/
public static final byte[] TYPE_URI = { 0x55 };
/**
* NFC Forum-defined Global Type - Connection Handover Request
*/
public static final byte[] TYPE_HANDOVER_REQUEST = { 0x48, 0x72 };
/**
* NFC Forum-defined Global Type - Connection Handover Select
*/
public static final byte[] TYPE_HANDOVER_SELECT = { 0x48, 0x73 };
/**
* NFC Forum-defined Global Type - Connection Handover Carrier
*/
public static final byte[] TYPE_HANDOVER_CARRIER = { 0x48, 0x63 };
/**
* NFC Forum-defined Local Type - Alternative Carrier
*/
public static final byte[] TYPE_ALTERNATIVE_CARRIER = { 0x61, 0x63 };
/* Flag values */
private static final int FLAG_MB = 0x80;
private static final int FLAG_ME = 0x40;
private static final int FLAG_CF = 0x20;
private static final int FLAG_SR = 0x10;
private static final int FLAG_IL = 0x08;
/**
* Record Flags
*/
private short mFlags = 0;
/**
* Record Type Name Format
*/
private short mTnf = 0;
/**
* Record Type
*/
private byte[] mType = null;
/**
* Record Identifier
*/
private byte[] mId = null;
/**
* Record Payload
*/
private byte[] mPayload = null;
/**
* Creates an NdefRecord given its Type Name Format, its type, its id and
* its.
*
* @param tnf
* Type Name Format
* @param type
* record type
* @param id
* record id (optional, can be null)
* @param data
* record payload
*/
public NdefRecord(short tnf, byte[] type, byte[] id, byte[] data) {
/* generate flag */
mFlags = FLAG_MB | FLAG_ME;
/* Determine if it is a short record */
if(data.length < 0xFF)
{
mFlags |= FLAG_SR;
}
/* Determine if an id is present */
if(id.length != 0)
{
mFlags |= FLAG_IL;
}
mTnf = tnf;
mType = (byte[]) type.clone();
mId = (byte[]) id.clone();
mPayload = (byte[]) data.clone();
}
/**
* Appends data to the record's payload.
*
* @param data
* Data to be added to the record.
*/
public void appendPayload(byte[] data) {
byte[] newPayload = new byte[mPayload.length + data.length];
System.arraycopy(mPayload, 0, newPayload, 0, mPayload.length);
System.arraycopy(data, 0, newPayload, mPayload.length, data.length);
mPayload = newPayload;
}
/**
* Returns record as a byte array.
*
* @return record as a byte array.
*/
public byte[] toByteArray() {
return generate(mFlags, mTnf, mType, mId, mPayload);
}
private native byte[] generate(short flags, short tnf, byte[] type,
byte[] id, byte[] data);
/**
* (Parcelable) Describe the parcel
* {@hide}
*/
public int describeContents() {
return 0;
}
/**
* (Parcelable) Convert current object to a Parcel
* {@hide}
*/
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mTnf);
dest.writeInt(mType.length);
dest.writeByteArray(mType);
dest.writeInt(mId.length);
dest.writeByteArray(mId);
dest.writeInt(mPayload.length);
dest.writeByteArray(mPayload);
}
/**
* Creator class, needed when implementing from Parcelable
* {@hide}
*/
public static final Parcelable.Creator<NdefRecord> CREATOR = new Parcelable.Creator<NdefRecord>() {
public NdefRecord createFromParcel(Parcel in) {
// TNF
short tnf = (short)in.readInt();
// Type
int typeLength = in.readInt();
byte[] type = new byte[typeLength];
in.readByteArray(type);
// ID
int idLength = in.readInt();
byte[] id = new byte[idLength];
in.readByteArray(id);
// Payload
int payloadLength = in.readInt();
byte[] payload = new byte[payloadLength];
in.readByteArray(payload);
return new NdefRecord(tnf, type, id, payload);
}
public NdefRecord[] newArray(int size) {
return new NdefRecord[size];
}
};
/**
* Returns record TNF
*
* @return mTnf
*/
public int getTnf(){
return mTnf;
}
/**
* Returns record TYPE
*
* @return mType
*/
public byte[] getType(){
return mType;
}
/**
* Returns record ID
*
* @return mId
*/
public byte[] getId(){
return mId;
}
/**
* Returns record Payload
*
* @return mPayload
*/
public byte[] getPayload(){
return mPayload;
}
}
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