@Override
public void actionPerformed(ActionEvent e) {
// if the current image nb is less than the length of the video
if (frameNumber < VIDEO_LENGTH) {
// update current imagenb
frameNumber++;
try {
// get next frame to send from the video, as well as its size
int imageLength = video.getnextframe(buffer);
// Builds an RTPpacket object containing the frame
RTPpacket rtpPacket =
new RTPpacket(MJPEG_TYPE, frameNumber, frameNumber * FRAME_PERIOD, buffer, imageLength);
// get to total length of the full rtp packet to send
int packetLength = rtpPacket.getLength();
// retrieve the packet bitstream and store it in an array of bytes
byte[] packetBits = new byte[packetLength];
rtpPacket.getPacket(packetBits);
// System.out.println("Send frame #" + imagenb);
rtpTransport.send(packetBits, packetLength);
// update GUI
this.setChanged();
this.notifyObservers(Update.FRAME);
} catch (IOException ex) {
RTSPServer.log("I/O exception sending RTSP packet: %s\n", ex.getMessage());
return;
}
} else {
// if we have reached the end of the video file, stop the timer
timer.stop();
}
}
private void doServerWait() {
try {
rtpTransport.setClientIp(rtspTransport.getClientIp());
rtspTransport.open();
setState(RTSP_STATES.INIT);
} catch (IOException e) {
RTSPServer.log("I/O exception opening RTSP socket\n");
return;
}
// Wait for the SETUP message from the client
RTSP_METHODS request;
boolean done = false;
while (!done) {
request = rtspTransport.parseRequest(); // blocking
if (request == RTSP_METHODS.SETUP) {
done = true;
setState(RTSP_STATES.READY);
rtspTransport.sendResponse();
try {
video = new VideoStream(videoName);
RTPTransport.open();
} catch (SocketException e) {
RTSPServer.log("socket exception creating RTP socket: %s\n", e.getMessage());
return;
} catch (FileNotFoundException e) {
RTSPServer.log("video file not found: %s\n", e.getMessage());
return;
}
}
}
// loop to handle RTSP requests
while (true) {
request = rtspTransport.parseRequest(); // blocking
if ((request == RTSP_METHODS.PLAY) && (getState() == RTSP_STATES.READY)) {
rtspTransport.sendResponse();
timer.start();
setState(RTSP_STATES.PLAYING);
} else if ((request == RTSP_METHODS.PAUSE) && (getState() == RTSP_STATES.PLAYING)) {
rtspTransport.sendResponse();
timer.stop();
setState(RTSP_STATES.READY);
} else if (request == RTSP_METHODS.TEARDOWN) {
rtspTransport.sendResponse();
timer.stop();
try {
rtspTransport.close();
} catch (IOException e) {
RTSPServer.log("I/O exception closing RTSP socket: %s\n", e.getMessage());
}
RTPTransport.close();
setState(RTSP_STATES.NONE);
return;
} else if (request == RTSP_METHODS.NONE) {
timer.stop();
try {
rtspTransport.close();
} catch (IOException e) {
RTSPServer.log("I/O exception closing RTSP socket: %s\n", e.getMessage());
}
RTPTransport.close();
setState(RTSP_STATES.NONE);
RTSPServer.log("client disconnected\n");
return;
}
}
}
public void setState(RTSP_STATES state) {
this.state = state;
RTSPServer.log("state %s (%d)\n", state, getSessionId());
this.setChanged();
this.notifyObservers(Update.STATE);
}