forked from luciandd/image_compressing
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app.py
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app.py
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import os
from flask import Flask, render_template, request, redirect, url_for, send_from_directory
from werkzeug import secure_filename
import imghdr
from PIL import Image
from huffman import make_freq_table, make_tree
import sys
import util
# Initialize the Flask application
app = Flask(__name__)
# This is the path to the upload directory
app.config['UPLOAD_FOLDER'] = 'uploads/'
app.config['ALLOWED_EXTENSIONS'] = set(['png', 'jpg', 'jpeg', 'gif'])
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1] in app.config['ALLOWED_EXTENSIONS']
@app.route('/')
def index():
return render_template('index.html')
@app.route('/upload', methods=['POST'])
def upload():
# Get the name of the uploaded file
file = request.files['file']
# Check if the file is one of the allowed types/extensions
if file and allowed_file(file.filename):
# Make the filename safe, remove unsupported chars
filename = secure_filename(file.filename)
# Move the file form the temporal folder to
# the upload folder we setup
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
file_in = './uploads/' + filename
#process checkbox value
value=request.form['checkbox']
if value == 'PIL':
compress_PIL(file_in, 1)
file_out = get_outfile_pil(filename)
file_out = './uploads/' + file_out
return render_template('upload.html', file_in=file_in, file_out=file_out)
elif value == "Huffman":
print(file_in)
huffman(file_in)
file_out = filename + '.huf'
return render_template('upload.html', file_in=file_in, file_out=file_out)
elif value == 'rle':
return render_template('upload.html', file_in=file_in)
else:
return render_template('index.html')
################################################
# all def here is get the name of file compress#
def get_outfile_pil(infile):
baseName, e = os.path.splitext(infile)
f, e = os.path.splitext(infile)
f = (baseName + str("_compress"))
outfile = f + ".jpg"
return outfile
################################################
# File compressing by compress_PIL(path_file, 1)
def compress_PIL(infile, times):
baseName, e = os.path.splitext(infile)
try:
f, e = os.path.splitext(infile)
f = (baseName + str("_compress"))
# outfile = f + ".png"
outfile = f + ".jpg"
#open previously generated file
compImg = Image.open(infile)
#compress file at 20% of previous quality
# compImg.save(outfile, "PNG", quality=20)
compImg.save(outfile, "JPEG", quality=20)
except IOError:
print("Cannot convert", infile)
# Algorithm for compressing image
def huffman(infile):
with open(infile, 'rb') as uncompressed:
freqs = make_freq_table(uncompressed)
tree = make_tree(freqs)
uncompressed.seek(0)
with open(infile+'.huf', 'wb') as compressed:
util.compress(tree, uncompressed, compressed)
#def rle(infile):
# return outfile
@app.route('/uploads/<filename>')
def uploaded_file(filename):
return send_from_directory(app.config['UPLOAD_FOLDER'],
filename)
if __name__ == '__main__':
app.run(
host="0.0.0.0",
port=int("8080"),
debug=True
)