public void read() {
try {
ByteArrayInputStream jpgIn = new ByteArrayInputStream(curFrame);
BufferedImage bufImg = ImageIO.read(jpgIn);
jpgIn.close();
int w = bufImg.getWidth();
int h = bufImg.getHeight();
if (w != this.width || h != this.height) {
this.resize(bufImg.getWidth(), bufImg.getHeight());
}
bufImg.getRGB(0, 0, w, h, this.pixels, 0, w);
this.updatePixels();
frameAvailable = false;
} catch (IOException e) {
System.err.println("Error acquiring the frame: " + e.getMessage());
}
}
public void testSimpleWrite() throws Exception {
Message one, two, three;
one = q("query one");
two = g(7123);
three = s(8134);
assertEquals(0, STATS.getSent());
assertFalse(SINK.interested());
WRITER.send(one);
WRITER.send(two);
WRITER.send(three);
assertEquals(3, STATS.getSent());
assertTrue(SINK.interested());
assertEquals(0, SENT.size());
assertFalse(WRITER.handleWrite()); // nothing left to write.
assertEquals(3, SENT.size());
ByteBuffer buffer = SINK.getBuffer();
assertEquals(
one.getTotalLength() + two.getTotalLength() + three.getTotalLength(), buffer.limit());
ByteArrayInputStream in = new ByteArrayInputStream(buffer.array(), 0, buffer.limit());
Message in1, in2, in3;
in1 = read(in);
in2 = read(in);
in3 = read(in);
assertEquals(-1, in.read());
assertEquals(buffer(one), buffer(in1));
assertEquals(buffer(two), buffer(in2));
assertEquals(buffer(three), buffer(in3));
assertEquals(buffer(one), buffer(SENT.next()));
assertEquals(buffer(two), buffer(SENT.next()));
assertEquals(buffer(three), buffer(SENT.next()));
assertFalse(SINK.interested());
assertEquals(3, STATS.getSent());
}
public void send(ByteArrayInputStream sendBytes) throws SocketException {
// A byte array representing a data packet
byte[] packet;
// While there are more than 127 bytes still to send ...
while (sendBytes.available() > 127) {
// ... create a 128 byte packet, ...
packet = new byte[128];
// ... set the header to 255, ...
packet[0] = (byte) 255;
// ... read 127 bytes from the sequence of bytes to send, ...
sendBytes.read(packet, 1, 127);
// ... and send the packet to the external process.
try {
output.write(packet);
output.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
// Create a packet for any remaining data
packet = new byte[sendBytes.available() + 1];
// Set the header appropriately
packet[0] = (byte) (sendBytes.available());
// Read the remaining bytes into the packet
sendBytes.read(packet, 1, sendBytes.available());
// Send the packet to the external process
try {
output.write(packet);
output.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
/** Processes an incoming SNMP v3 message. */
protected void ProcessIncomingMessage(AsnDecoder rpdu, ByteArrayInputStream in)
throws DecodingException, IOException {
byte[] bu = null;
// need to duplicate the message for V3 to rewrite
int nb = in.available();
bu = new byte[nb];
in.read(bu);
in = new ByteArrayInputStream(bu);
AsnSequence asnTopSeq = rpdu.DecodeSNMPv3(in);
int msgId = rpdu.getMsgId(asnTopSeq);
Integer rid = (Integer) msgIdHash.get(new Integer(msgId));
if (rid != null) {
if (AsnObject.debug > 6) {
System.out.println(
"SnmpContextv3.ProcessIncomingMessage(): msgId=" + msgId + ", Pdu reqId=" + rid);
}
Pdu pdu = getPdu(rid);
try {
AsnPduSequence pduSeq = rpdu.processSNMPv3(this, asnTopSeq, bu);
if (pduSeq != null) {
// got a message
Integer rid2 = new Integer(pduSeq.getReqId());
if (AsnObject.debug > 6) {
System.out.println("SnmpContextv3.ProcessIncomingMessage():" + " rid2=" + rid2);
}
Pdu newPdu = null;
if (rid2.intValue() != rid.intValue()) {
newPdu = getPdu(rid2);
if (AsnObject.debug > 3) {
System.out.println(
"ProcessIncomingMessage(): "
+ "pduReqId of msgId ("
+ rid.intValue()
+ ") != pduReqId of Pdu ("
+ rid2.intValue()
+ ")");
}
if (newPdu == null) {
if (AsnObject.debug > 3) {
System.out.println(
"ProcessIncomingMessage(): "
+ "Using pduReqId of msgId ("
+ rid.intValue()
+ ")");
}
}
}
if (newPdu != null) {
pdu = newPdu;
}
} else {
if (AsnObject.debug > 6) {
System.out.println("SnmpContextv3.ProcessIncomingMessage():" + " pduSeq is null.");
}
}
if (pdu != null) {
pdu.fillin(pduSeq);
} else {
if (AsnObject.debug > 6) {
System.out.println("ProcessIncomingMessage(): No Pdu with reqid " + rid.intValue());
}
}
} catch (DecodingException exc) {
if (pdu != null) {
pdu.setErrorStatus(AsnObject.SNMP_ERR_DECODING_EXC, exc);
pdu.fillin(null);
} else {
throw exc;
}
}
} else {
if (AsnObject.debug > 3) {
System.out.println("Pdu of msgId " + msgId + " is already answered");
}
rid = new Integer(-1);
}
}