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#!/usr/bin/env python
import argparse, time, argparse, textwrap, threading, io
from urllib.parse import urlparse
from PIL import Image, GifImagePlugin, ImageSequence, ImageOps
from flask import Flask, request
import crap
import config
gif = None
gif_cond = threading.Condition()
def putgif(filelike):
global gif
with gif_cond:
gif = filelike
gif_cond.notify()
def sendgifs(target):
thost, tport = target.split(':')
crapthing = crap.CRAPClient(thost, int(tport))
last_gif = None
while True:
with gif_cond:
gif_cond.wait_for(lambda: last_gif != gif)
last_gif = gif
img = Image.open(last_gif)
palette = img.getpalette()
last_frame = Image.new("RGBA", img.size)
sleepiness = min(img.info.get('duration', 100) / 1000.0, 10.0)
for frame in ImageSequence.Iterator(img):
#This works around a known bug in Pillow
#See also: http://stackoverflow.com/questions/4904940/python-converting-gif-frames-to-png
frame.putpalette(palette)
c = frame.convert("RGBA")
if 'background' in img.info and 'transparency' in img.info:
last_frame.paste(c, c)
else:
last_frame = c
im = last_frame.copy()
im = ImageOps.fit(im, (config.display_width, config.display_height), Image.NEAREST, centering=(0.5, 0.5))
crapthing.sendframe(im.tobytes())
time.sleep(sleepiness)
if last_gif != gif:
break
app = Flask(__name__)
#app.debug = True
@app.route('/', methods=('POST', 'GET'))
def index():
if request.method == 'GET':
return textwrap.dedent('''
<form action="#" method="POST" enctype="multipart/form-data">
<input name="gif" type="file" accept="image/gif">
<input type="submit" value="upload">
</form>''')
else: #POST
putgif(io.BytesIO(request.files['gif'].read()))
return 'Done, thanks!'
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Present a web interface to stream .gif files via CRAP to a matelight')
parser.add_argument('target', type=str, default='localhost:1337', nargs='?', help='Target matelight, host:port notation')
args = parser.parse_args()
gif_sender = threading.Thread(target=sendgifs, args=(args.target,), daemon=True)
gif_sender.start()
app.run()
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