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threaded_webserver.py
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threaded_webserver.py
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## important libraries
import logging
import traceback
#
import numpy as np
from PIL import Image
import cv2
import time
import os
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3' # set tensorflow verbosity up so it won't print much
from threading import Thread
## adding my lib to sys path
import sys
sys.path.insert(1, './boardRendering/')
sys.path.insert(1, './pieceRecognize/')
sys.path.insert(1, './boardPreprocessing/')
sys.path.insert(1, './cchessEngine/')
## my libraries
import preprocess
import XiangpiRender
Guesser = None
from webserverVideoProcessing import VideoProcessor
import webserverVideoProcessing as vpGet
import elephantfish
DF_TFMODEL_DIR = './pieceRecognize/models/G_1milparam_1000epc'
DF_TFLMODEL_DIR = './pieceRecognize/models/G_1milparam_1000epc.tflite'
MODEL_DIR = None
DEBUG_MODE = False
USE_TFLITE = True
RESOLUTION = (640, 480)
DEBUG_RESO = (640, 480)
def preload():
global DF_TFLMODEL_DIR, DF_TFMODEL_DIR
global MODEL_DIR, DEBUG_MODE, USE_TFLITE, RESOLUTION
if len(sys.argv) < 2 or sys.argv[1] == 'help':
print('Syntax: python3 live.py <debug_mode> <resolution> <model_dir> <use_tflite>')
print(' - <debug_mode> is either TRUE or FALSE')
print(' - <resolution> is WidthXHeight (eg. 1280x960, 960x720, 640x480, 320x240)')
print(' - <model_dir> is path to the Xiangpi predict model you wish to use')
print(' - <use_tflite> is either TRUE or FALSE, suggesting it should use tflite model')
exit(0)
else:
print('Pass "help" for more infomation on syntax')
print('\n------------------------------------------------------------------\n')
if len(sys.argv) < 2: ## argv for <debug_mode> ######
print('<debug_mode> defaults to False')
else:
DEBUG_MODE = (sys.argv[1].lower() == 'true')
print('<debug_mode> is set to', DEBUG_MODE)
if len(sys.argv) < 3: ## argv for <resolution> #####
print('<resolution> defaults to 1280x640')
else:
try:
st = sys.argv[2].lower()
idx = st.find('x')
RESOLUTION = (int(st[:idx]), int(st[idx+1:]))
except Exception as e_parse:
print('Error: Cannot parse resolution')
print(e_parse)
finally:
print('<resolution> is set to', RESOLUTION)
if len(sys.argv) < 4 or sys.argv[3] == '_': ## argv for <model_dir> ####
MODEL_DIR = None
print('<model_dir> is empty, is defaulted to what depends on <use_tfltie>')
else:
MODEL_DIR = sys.argv[3]
print('<tf_model> is set to', MODEL_DIR)
if len(sys.argv) < 5: ## argv for <use_tflite>
print('<use_tflite> defaults to', USE_TFLITE)
else:
USE_TFLITE = (sys.argv[4].lower() == 'true')
print('<use_tflite> is set to', USE_TFLITE)
print('\n------------------------------------------------------------------\n')
if MODEL_DIR is None:
if USE_TFLITE: MODEL_DIR = DF_TFLMODEL_DIR
else: MODEL_DIR = DF_TFMODEL_DIR
print('<model_dir> is set to', MODEL_DIR, 'because <use_tflite> is set to', USE_TFLITE)
print('\n------------------------------------------------------------------\n')
print('Importing guesser libs and loading Tensorflow model...')
global Guesser
try:
if USE_TFLITE:
import TFLite_XiangpiGuesser as Guesser
else:
import XiangpiGuesser as Guesser
Guesser.loadModel(MODEL_DIR)
except Exception as e:
print('FATAL: Cannot load Tensorflow model')
print(e)
else:
print('Succeeded.')
print('\n------------------------------------------------------------------\n')
####################################################################################################
## WEB SERVER
####################################################################################################
## Camera, Streams
import io
## http servers
import socketserver
import threading
from http import server
## html headers
import mimetypes
APP_DIR = './Web/'
vp_thread = None
class StreamingHandler(server.BaseHTTPRequestHandler):
def getByteObject(self, arr):
img = Image.fromarray(arr.astype('uint8'))
file_ob = io.BytesIO()
img.save(file_ob, 'JPEG')
file_ob.seek(0)
return file_ob
def writeFrame(self, frame):
file_ob = self.getByteObject(frame)
self.wfile.write(file_ob.getvalue())
def writeMJPEGFrame(self, frame):
self.wfile.write(b'--FRAME\r\n')
file_ob = self.getByteObject(frame)
self.send_header('Content-Type', 'image/jpeg')
self.send_header('Content-Length', len(file_ob.getvalue()))
self.end_headers()
self.wfile.write(file_ob.getvalue())
self.wfile.write(b'\r\n')
def do_GET(self):
if self.path == '/':
self.send_response(301)
self.send_header('Location', '/index.html')
self.end_headers()
elif self.path.startswith('/stream'):
self.send_response(200)
self.send_header('Age', 0)
self.send_header('Cache-Control', 'no-cache, private')
self.send_header('Pragma', 'no-cache')
self.send_header('Content-Type', 'multipart/x-mixed-replace; boundary=FRAME')
self.end_headers()
try:
while True:
mut = [np.zeros((5,5,3), np.uint8)]
if self.path == '/stream_cam.mjpeg':
th = Thread(target=vpGet.threadsafe_getRawFrame, args=(mut,))
th.start(); th.join()
self.writeMJPEGFrame(mut[-1])
elif self.path == '/stream_mask.mjpeg':
th = Thread(target=vpGet.threadsafe_getMaskFrame, args=(mut,))
th.start(); th.join()
mask = cv2.cvtColor(mut[-1], cv2.COLOR_GRAY2RGB)
self.writeMJPEGFrame(mask)
elif self.path == '/stream_contour.mjpeg':
th = Thread(target=vpGet.threadsafe_getContourFrame, args=(mut,))
th.start(); th.join()
self.writeMJPEGFrame(mut[-1])
elif self.path == '/stream_canvas.mjpeg':
th = Thread(target=vpGet.threadsafe_getCanvasFrame, args=(mut,))
th.start(); th.join()
img = cv2.cvtColor(mut[-1], cv2.COLOR_RGBA2BGR)
self.writeMJPEGFrame(img)
except Exception as e:
print(e)
#traceback.print_exc()
logging.warning('Removed streaming client %s: %s', self.client_address, str(e))
else:
pass
elif self.path == "/move_suggest_red.html":
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.end_headers()
prv = ''
while True:
try:
mut = ['.'*90]
th = Thread(target=vpGet.threadsafe_getDescriptorString, args=(mut,))
th.start(); th.join()
if mut[-1] is None:
self.wfile.write(b'Board is not available yet, waiting 2s..<br>')
time.sleep(2)
continue
if prv == mut[-1]:
time.sleep(1)
continue
prv = mut[-1]
self.wfile.write(b'<br><br><br><br><br>')
self.wfile.write(b'<strong> Evaluating.. </strong> <br>')
chesspos = elephantfish.parseDescriptorToPos(prv)
for move, score in elephantfish.getSuggestedMoves(chesspos):
st1 = move[0] + '-' + move[1]
st2 = str(score)
self.wfile.write((st1 + ' : ' + st2).encode())
self.wfile.write(b'\r\n<br>')
self.wfile.write(b'<strong> Out of think time, finished eval.</strong>')
time.sleep(2)
except Exception as e:
self.wfile.write(b'<p style="color: red; font-weight: bold"> Exception occur while launching engine </p>')
self.wfile.write(b'<br>')
self.wfile.write(str(e).encode())
self.wfile.write(b'\r\n')
break
elif self.path == "/move_suggest_green.html":
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.end_headers()
prv = ''
while True:
try:
mut = ['.'*90]
th = Thread(target=vpGet.threadsafe_getDescriptorString, args=(mut,))
th.start(); th.join()
if mut[-1] is None:
self.wfile.write(b'Board is not available yet, waiting 2s..<br>')
time.sleep(2)
continue
if prv == mut[-1]:
time.sleep(2)
continue
prv = mut[-1]
self.wfile.write(b'<br><br><br><br><br>')
self.wfile.write(b'<strong> Evaluating.. </strong> <br>')
chesspos = elephantfish.parseDescriptorToPos(prv)
for move, score in elephantfish.getSuggestedMoves(chesspos, True):
st1 = move[0] + '-' + move[1]
st2 = str(score)
self.wfile.write((st1 + ' : ' + st2).encode())
self.wfile.write(b'\r\n<br>')
self.wfile.write(b'<strong> Out of think time, finished eval.</strong>')
time.sleep(2)
except Exception as e:
self.wfile.write(b'<p style="color: red; font-weight: bold"> Exception occur while launching engine </p>')
self.wfile.write(b'<br>')
self.wfile.write(str(e).encode())
self.wfile.write(b'\r\n')
break
else:
try:
idx = self.path.find('?')
if idx > 0:
path = self.path[:idx]
else:
path = self.path
fpath = APP_DIR + path
print(fpath)
f = open(fpath, 'rb')
except IOError:
self.send_error(404, 'File not found: %s' % fpath)
else:
self.send_response(200)
mimetype, _ = mimetypes.guess_type(fpath)
self.send_header('Content-type', mimetype)
self.end_headers()
self.wfile.write(f.read())
class StreamingServer(socketserver.ThreadingMixIn, server.HTTPServer):
allow_reuse_address = True
daemon_threads = True
if __name__ == '__main__':
preload()
try:
print('Creating Video processing thread..')
vp_thread = VideoProcessor('processor', preprocess, XiangpiRender, Guesser, RESOLUTION, 12)
vp_thread.start()
print('Succeed.\n\n')
except:
print('FATAL: Failed to start the VP_Thread.')
raise
try:
print('Starting the server.')
print('------------------------------------------------------------------\n')
address = ('', 8000)
server = StreamingServer(address, StreamingHandler)
server.serve_forever()
except Exception as e:
print('Failed to start the server..')
print(e)
traceback.print_exc()
finally:
pass