MJPEG is a popular format for webcam streams. It’s probably popular because it’s so simple to do and the performance is surprisingly good. Unfortunately, I found it quite difficult to scrape together enough information to implement a streamer myself. In an effort to help the next poor, frustrated soul, here’s a simple method for streaming an MJPEG to a socket in Java.public void handleConnection(Socket socket, JpegProvider jpegProvider) throws Exception {
byte[] data = jpegProvider.getJpeg();
OutputStream outputStream = socket.getOutputStream();
outputStream.write((
"HTTP/1.0 200 OK\r\n" +
"Server: YourServerName\r\n" +
"Connection: close\r\n" +
"Max-Age: 0\r\n" +
"Expires: 0\r\n" +
"Cache-Control: no-cache, private\r\n" +
"Pragma: no-cache\r\n" +
"Content-Type: multipart/x-mixed-replace; " +
"boundary=--BoundaryString\r\n\r\n").getBytes());
while (true) {
data = jpegProvider.getJpeg();
outputStream.write((
"--BoundaryString\r\n" +
"Content-type: image/jpg\r\n". +
"Content-Length: " +
data.length +
"\r\n\r\n").getBytes());
outputStream.write(data);
outputStream.write("\r\n\r\n".getBytes());
outputStream.flush();
}
}