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/*
* Copyright (c) 2015 The Android Open Source Project
* Copyright (c) 2015 Samsung LSI
*
* 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 javax.obex;
import java.io.IOException;
import java.io.InputStream;
public class ObexPacket {
public int mHeaderId;
public int mLength;
public byte[] mPayload = null;
private ObexPacket(int headerId, int length) {
mHeaderId = headerId;
mLength = length;
}
/**
* Create a complete OBEX packet by reading data from an InputStream.
* @param is the input stream to read from.
* @return the OBEX packet read.
* @throws IOException if an IO exception occurs during read.
*/
public static ObexPacket read(InputStream is) throws IOException {
int headerId = is.read();
return read(headerId, is);
}
/**
* Read the remainder of an OBEX packet, with a specified headerId.
* @param headerId the headerId already read from the stream.
* @param is the stream to read from, assuming 1 byte have already been read.
* @return the OBEX packet read.
* @throws IOException
*/
public static ObexPacket read(int headerId, InputStream is) throws IOException {
// Read the 2 byte length field from the stream
int length = is.read();
length = (length << 8) + is.read();
ObexPacket newPacket = new ObexPacket(headerId, length);
int bytesReceived;
byte[] temp = null;
if (length > 3) {
// First three bytes already read, compensating for this
temp = new byte[length - 3];
bytesReceived = is.read(temp);
while (bytesReceived != temp.length) {
bytesReceived += is.read(temp, bytesReceived, temp.length - bytesReceived);
}
}
newPacket.mPayload = temp;
return newPacket;
}
}
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