83 lines
2.0 KiB
Python
Executable File
83 lines
2.0 KiB
Python
Executable File
import os
|
|
from PIL import Image, ExifTags
|
|
from io import BytesIO
|
|
from aiohttp.web_exceptions import (
|
|
HTTPException,
|
|
HTTPExpectationFailed,
|
|
HTTPForbidden,
|
|
HTTPMethodNotAllowed,
|
|
HTTPNotFound,
|
|
)
|
|
from aiohttp.web_response import Response, StreamResponse
|
|
from id2file import getFilenameFromId
|
|
|
|
|
|
def imageUp(img):
|
|
try:
|
|
o = 'Orientation'
|
|
exif=dict(img._getexif().items())
|
|
if exif[o] == 3:
|
|
img = img.rotate(180, expand=True)
|
|
elif exif[o] == 6:
|
|
img = img.rotate(270, expand=True)
|
|
elif exif[o] == 8:
|
|
img = img.rotate(90, expand=True)
|
|
return img
|
|
except (AttributeError, KeyError, IndexError):
|
|
# cases: image don't have getexif
|
|
return img
|
|
|
|
def imageThumb(imgfilepath,width=None,height=None):
|
|
im = Image.open(imgfilepath)
|
|
im = imageUp(im)
|
|
mode = im.mode
|
|
if mode not in ('L', 'RGB'):
|
|
if mode == 'RGBA':
|
|
alpha = im.split()[3]
|
|
bgmask = alpha.point(lambda x: 255-x)
|
|
im = im.convert('RGB')
|
|
# paste(color, box, mask)
|
|
im.paste((255,255,255), None, bgmask)
|
|
else:
|
|
im = im.convert('RGB')
|
|
|
|
w, h = im.size
|
|
if not width and not height:
|
|
width = 256
|
|
if width:
|
|
width = int(width)
|
|
height = int(float(width) * float(h) / float(w))
|
|
else:
|
|
height = int(height)
|
|
width = int(float(height) * float(w) / float(h))
|
|
thumb = im.resize((width,height),Image.ANTIALIAS)
|
|
f = BytesIO()
|
|
thumb.save(f,format='jpeg',quality=60)
|
|
im.close()
|
|
v = f.getvalue()
|
|
return v
|
|
|
|
async def thumb(*args, **kw):
|
|
id = args[0]
|
|
request = kw.get('request')
|
|
xpath = request.path[len(options.leading):]
|
|
if xpath == '':
|
|
raise HTTPNotFound
|
|
id = xpath[1:]
|
|
imgpath = await getFilenameFromId(id)
|
|
v = imageThumb(imgpath,width=options.width,height=options.height)
|
|
response = Response(
|
|
status=200,
|
|
headers = {
|
|
'Content-Disposition': 'attrachment;filename={}'.format(os.path.basename(imgpath)),
|
|
'Content-Length':str(len(v))
|
|
}
|
|
)
|
|
await response.prepare(request)
|
|
await response.write(v)
|
|
await response.write_eof()
|
|
return response
|
|
|
|
if __name__ == '__main__':
|
|
imageThumb("/home/ymq/media/pictures/2019-08/IMG_20190804_113014.jpg", width=256)
|