You can do this without repeatedly making Http requests. Only one will suffice. You can use the fetch api to create a ReadableStream, access it’s Reader and keep reading from the stream. Once you have the reader keep reading chunks from the stream recursively. Look for the SOI ( 0xFF 0xD8) in the byte stream … Read more
import cv2 import urllib import numpy as np stream = urllib.urlopen(‘http://localhost:8080/frame.mjpg’) bytes=”” while True: bytes += stream.read(1024) a = bytes.find(‘\xff\xd8’) b = bytes.find(‘\xff\xd9’) if a != -1 and b != -1: jpg = bytes[a:b+2] bytes = bytes[b+2:] i = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8), cv2.CV_LOAD_IMAGE_COLOR) cv2.imshow(‘i’, i) if cv2.waitKey(1) == 27: exit(0) edit (explanation) I just saw that … Read more
You cannot reset the crossOrigin flag once it is tainted, but if you know before hand what the image is you can convert it to a data url, see Drawing an image from a data URL to a canvas But no, you cannot and should not be using getImageData() from external sources that don’t support … Read more
tl;dr version Do two things: Disable the userspace output buffer, either… Globally, by either… Turning off output_buffering in your php.ini, or Turning off output_buffering in your Apache config using php_flag “output_buffering” Off or for just the script you care about, by either… calling ob_end_flush(), or calling ob_end_clean() Also, disable the server-level output buffer as much … Read more
nice work! For your problem with onResume(), isn’t it enough when you move the following code from onCreate() to onResume()? //sample public cam String URL = “http://trackfield.webcam.oregonstate.edu/axis-cgi/mjpg/video.cgi?resolution=800×600&%3bdummy=1333689998337”; mv = new MjpegView(this); setContentView(mv); new DoRead().execute(URL); Then you simply recreate the View and new instance of the AsyncTask… I tried it and it works for me…
I found this code over the internet some time ago, maybe it will be of some help to you. MjpegSample Class package de.mjpegsample; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.Window; import android.view.WindowManager; import de.mjpegsample.MjpegView.MjpegInputStream; import de.mjpegsample.MjpegView.MjpegView; public class MjpegSample extends Activity { private MjpegView mv; private static final int MENU_QUIT = 1; … Read more