72 lines
2.2 KiB
Python

from PIL import Image
import os
from parsing import ContentMimeGuesser, ExtensionMimeGuesser
from multiprocessing import Value
import ffmpeg
class ThumbnailGenerator:
def __init__(self, size, quality=85, color="FF00FF"):
self.size = (size, size)
self.mime_guesser = ContentMimeGuesser()
self.quality = quality
self.color = tuple(bytes.fromhex(color))
def generate(self, path, dest_path):
mime = self.mime_guesser.guess_mime(path)
if mime.startswith("image"):
try:
self.generate_image(path, dest_path)
pass
except OSError:
print("Not an image " + path)
elif mime.startswith("video"):
try:
(ffmpeg.
input(path)
.output("tmp", vframes=1, f="image2", loglevel="error")
.run()
)
self.generate_image("tmp", dest_path)
os.remove("tmp")
except Exception as e:
print("Couldn't make thumbnail for " + path)
def generate_all(self, docs, dest_path, counter: Value=None):
os.makedirs(dest_path, exist_ok=True)
for doc in docs:
full_path = os.path.join(doc["_source"]["path"], doc["_source"]["name"])
if os.path.isfile(full_path):
self.generate(full_path, os.path.join(dest_path, doc["_id"]))
if counter is not None:
counter.value += 1
def generate_image(self, path, dest_path):
with open(path, "rb") as image_file:
with Image.open(image_file) as image:
image.thumbnail(self.size, Image.BICUBIC)
canvas = Image.new("RGB", image.size, self.color)
if image.mode in ('RGBA', 'LA') or (image.mode == 'P' and 'transparency' in image.info):
try:
canvas.paste(image, mask=image.split()[-1])
except ValueError:
canvas.paste(image)
else:
canvas.paste(image)
canvas.save(dest_path, "JPEG", quality=self.quality, optimize=True)
canvas.close()