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57 lines
989 B
Python
57 lines
989 B
Python
from PIL import Image
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import sys, time
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import io
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import threading, queue
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try:
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format = sys.argv[1]
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except:
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format = "PNG"
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im = Image.open("Images/lena.ppm")
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im.load()
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queue = queue.Queue()
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result = []
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class Worker(threading.Thread):
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def run(self):
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while True:
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im = queue.get()
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if im is None:
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queue.task_done()
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sys.stdout.write("x")
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break
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f = io.BytesIO()
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im.save(f, format, optimize=1)
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data = f.getvalue()
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result.append(len(data))
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im = Image.open(io.BytesIO(data))
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im.load()
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sys.stdout.write(".")
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queue.task_done()
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t0 = time.time()
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threads = 20
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jobs = 100
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for i in range(threads):
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w = Worker()
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w.start()
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for i in range(jobs):
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queue.put(im)
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for i in range(threads):
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queue.put(None)
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queue.join()
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print()
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print(time.time() - t0)
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print(len(result), sum(result))
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print(result)
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