Java ByteBuffer.putChar方法代码示例

import java.nio.ByteBuffer; //导入方法依赖的package包/类
/**
 * Char array tobyte byte [ ].
 *
 * @param values the values
 * @return the byte [ ]
 */
public static byte[] charArrayTobyte(char[] values)
{
	int byteLength = values.length * 2;
	
	ByteBuffer bf = ByteBuffer.allocate( byteLength );
    
	for ( char v : values )
	{
		bf.putChar( v );
	}
	
	byte[] byteArray = bf.array();
	byte[] returnbyte = new byte[byteLength];
	
    for(int i=0;i < byteLength; i++)
    {
        returnbyte[i] = byteArray[(byteLength-1)-i];
    }
    
    return returnbyte;
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
public AudioPacket(char seq, int timestamp, int ssrc, byte[] encodedAudio)
{
    this.seq = seq;
    this.ssrc = ssrc;
    this.timestamp = timestamp;
    this.encodedAudio = encodedAudio;

    ByteBuffer buffer = ByteBuffer.allocate(RTP_HEADER_BYTE_LENGTH + encodedAudio.length);
    buffer.put(RTP_VERSION_PAD_EXTEND_INDEX, RTP_VERSION_PAD_EXTEND);   //0
    buffer.put(RTP_PAYLOAD_INDEX, RTP_PAYLOAD_TYPE);                    //1
    buffer.putChar(SEQ_INDEX, seq);                                     //2 - 3
    buffer.putInt(TIMESTAMP_INDEX, timestamp);                          //4 - 7
    buffer.putInt(SSRC_INDEX, ssrc);                                    //8 - 11
    System.arraycopy(encodedAudio, 0, buffer.array(), RTP_HEADER_BYTE_LENGTH, encodedAudio.length);//12 - n
    this.rawPacket = buffer.array();

}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
public void writeSample(char left, char right) {
    if (writeAvailableBytes() < 4) {
        throw new BufferOverflowException();
    }
    ByteBuffer bb = ByteBuffer.wrap(buffer);
    bb.order(order);
    bb.putChar(writePos, left);
    bb.putChar(writePos + 2, right);
    writePos += 4;
    readAvailable += 4;
    if (writePos >= buffer.length) {
        writePos = 0;
    }
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
@Override
public void serialize(ByteBuffer buffer) {
    switch (getJavaKind()) {
        case Byte:
        case Boolean:
            buffer.put((byte) primitive);
            break;
        case Short:
            buffer.putShort((short) primitive);
            break;
        case Char:
            buffer.putChar((char) primitive);
            break;
        case Int:
            buffer.putInt(asInt());
            break;
        case Long:
            buffer.putLong(asLong());
            break;
        case Float:
            buffer.putFloat(asFloat());
            break;
        case Double:
            buffer.putDouble(asDouble());
            break;
        default:
            throw new IllegalArgumentException("unexpected kind " + getJavaKind());
    }
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
void putOne(ByteBuffer b, PrimitiveType t) {
    switch (t) {
    case BYTE: b.put((byte)0); break;
    case CHAR: b.putChar('0'); break;
    case SHORT: b.putShort((short)0); break;
    case INT: b.putInt(0); break;
    case LONG: b.putLong(0); break;
    case FLOAT: b.putFloat(0); break;
    case DOUBLE: b.putDouble(0); break;
    }
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
void write(ByteBuffer buffer) {
    buffer.putChar(firstChar);
    if (payloadLen >= 126) {
        if (payloadLen < 65536) {
            buffer.putChar((char) payloadLen);
        } else {
            buffer.putLong(payloadLen);
        }
    }
    if (mask) {
        buffer.putInt(maskingKey);
    }
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
/**
 * Generates a NetBIOS name query request.
 * https://tools.ietf.org/html/rfc1002
 * Section 4.2.12
 */
static byte[] createPacket(int transId) {
  ByteBuffer os = ByteBuffer.allocate(50);

  char broadcastFlag = 0x0010;
  char questionCount = 1;
  char answerResourceCount = 0;
  char authorityResourceCount = 0;
  char additionalResourceCount = 0;

  os.putChar((char) transId);
  os.putChar(broadcastFlag);
  os.putChar(questionCount);
  os.putChar(answerResourceCount);
  os.putChar(authorityResourceCount);
  os.putChar(additionalResourceCount);

  // Length of name. 16 bytes of name encoded to 32 bytes.
  os.put((byte) 0x20);

  // '*' character encodes to 2 bytes.
  os.put((byte) 0x43);
  os.put((byte) 0x4b);

  // Write the remaining 15 nulls which encode to 30* 0x41
  for (int i = 0; i < 30; i++) {
    os.put((byte) 0x41);
  }

  // Length of next segment.
  os.put((byte) 0);

  // Question type: Node status
  os.putChar((char) 0x21);

  // Question class: Internet
  os.putChar((char) 0x01);

  return os.array();
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
public static ByteBuffer putChar(ByteBuffer buf, char value) {
    buf.putChar(value);
    writeByteBuffer(buf);
    return buf;
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
public byte[] getMarschaledBytes() throws UnsupportedEncodingException, BufferOverflowException {
    ByteBuffer bb = ByteBuffer.allocate(16384);
    bb.put((byte) 0x0);               //version
    bb.putLong(logtime);              //8
    bb.putInt(mVerbosityLevel);      //4
    bb.putInt(mLevel.getInt());
    bb.putInt(mRessourceId);
    if (mMessage == null || mMessage.length() == 0) {
        bb.putInt(0);
    } else {
        marschalString(mMessage, bb);
    }
    if (mArgs == null || mArgs.length == 0) {
        bb.putInt(0);
    } else {
        bb.putInt(mArgs.length);
        for (Object o : mArgs) {
            if (o instanceof String) {
                bb.putChar('s');
                marschalString((String) o, bb);
            } else if (o instanceof Integer) {
                bb.putChar('i');
                bb.putInt((Integer) o);
            } else if (o instanceof Float) {
                bb.putChar('f');
                bb.putFloat((Float) o);
            } else if (o instanceof Double) {
                bb.putChar('d');
                bb.putDouble((Double) o);
            } else if (o instanceof Long) {
                bb.putChar('l');
                bb.putLong((Long) o);
            } else if (o == null) {
                bb.putChar('0');
            } else {
                VpnStatus.logDebug("Unknown object for LogItem marschaling " + o);
                bb.putChar('s');
                marschalString(o.toString(), bb);
            }
        }
    }
    int pos = bb.position();
    bb.rewind();
    return Arrays.copyOf(bb.array(), pos);
}
 

import java.nio.ByteBuffer; //导入方法依赖的package包/类
private boolean write(byte b, String string, ByteBuffer buf)
{
	if ((b == 'C') || (b == 'c'))
	{
		buf.put(Byte.decode(string));
		return true;
	}
	else if ((b == 'D') || (b == 'd'))
	{
		buf.putInt(Integer.decode(string));
		return true;
	}
	else if ((b == 'H') || (b == 'h'))
	{
		buf.putShort(Short.decode(string));
		return true;
	}
	else if ((b == 'F') || (b == 'f'))
	{
		buf.putDouble(Double.parseDouble(string));
		return true;
	}
	else if ((b == 'S') || (b == 's'))
	{
		final int len = string.length();
		for (int i = 0; i < len; i++)
		{
			buf.putChar(string.charAt(i));
		}
		buf.putChar('\000');
		return true;
	}
	else if ((b == 'B') || (b == 'b') || (b == 'X') || (b == 'x'))
	{
		buf.put(new BigInteger(string).toByteArray());
		return true;
	}
	else if ((b == 'Q') || (b == 'q'))
	{
		buf.putLong(Long.decode(string));
		return true;
	}
	return false;
}