def __init__(self, url):
self.url = url
self.input = urllib2.urlopen(url)
self.process_data = threading.Event()
self.server = SimpleThreadedHTTPServer('', 8080, self.process_data)
# Use jpegtran to perform lossless fast transformations on the image.
# You can pipe together as many commands as you'd like here.
self.jpegtran_transform = "jpegtran -flip horizontal | jpegtran -flip vertical"
# PIL transformation options. These are quite a bit slower - not to mention
# lossy - compared to jpegtran.
self.pil_transform = False
self.pil_quality = 90
self.pil_size = (1024,768)
class Camera(object):
def __init__(self, url):
self.url = url
self.input = urllib2.urlopen(url)
self.process_data = threading.Event()
self.server = SimpleThreadedHTTPServer('', 8080, self.process_data)
# Use jpegtran to perform lossless fast transformations on the image.
# You can pipe together as many commands as you'd like here.
self.jpegtran_transform = "jpegtran -flip horizontal | jpegtran -flip vertical"
# PIL transformation options. These are quite a bit slower - not to mention
# lossy - compared to jpegtran.
self.pil_transform = False
self.pil_quality = 90
self.pil_size = (1024,768)
def run(self):
self.server.start()
while True:
# Block until the server indicates we have at least one client.
self.process_data.wait()
# Note: This exact sequence works for newiswh Vivotek cameras.
# I'm sure there is a much better way of doing this.
self.input.readline()
self.input.readline()
content_length = int(self.input.readline().split(": ")[1].strip())
self.input.readline()
if self.jpegtran_transform:
transformations = subprocess.Popen(self.jpegtran_transform, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
data, _ = transformations.communicate(self.input.read(content_length))
else:
data = self.input.read(content_length)
if self.pil_transform:
output = StringIO.StringIO()
im = Image.open(io.BytesIO(data))
if self.pil_size:
im = im.resize(self.pil_size)
im.save(output, format="jpeg", quality=self.pil_quality)
self.server.add(output.getvalue())
else:
self.server.add(data)
