mirror of
https://github.com/janeczku/calibre-web
synced 2024-11-24 18:47:23 +00:00
Fix #1068 PDF cover Images inverted or incorrect single image grabbed from cover page
This commit is contained in:
Ozzieisaacs
parent
6f61e80c97
commit
a7ab7fcf06
@ -54,7 +54,7 @@ except ImportError:
|
||||
use_unidecode = False
|
||||
|
||||
try:
|
||||
from PIL import Image
|
||||
from PIL import Image as PILImage
|
||||
use_PIL = True
|
||||
except ImportError:
|
||||
use_PIL = False
|
||||
@ -497,9 +497,9 @@ def save_cover(img, book_path):
|
||||
# convert to jpg because calibre only supports jpg
|
||||
if content_type in ('image/png', 'image/webp'):
|
||||
if hasattr(img,'stream'):
|
||||
imgc = Image.open(img.stream)
|
||||
imgc = PILImage.open(img.stream)
|
||||
else:
|
||||
imgc = Image.open(io.BytesIO(img.content))
|
||||
imgc = PILImage.open(io.BytesIO(img.content))
|
||||
im = imgc.convert('RGB')
|
||||
tmp_bytesio = io.BytesIO()
|
||||
im.save(tmp_bytesio, format='JPEG')
|
||||
|
||||
119
cps/uploader.py
119
cps/uploader.py
@ -20,11 +20,7 @@
|
||||
from __future__ import division, print_function, unicode_literals
|
||||
import os
|
||||
import hashlib
|
||||
import struct
|
||||
from tempfile import gettempdir
|
||||
|
||||
from flask_babel import gettext as _
|
||||
|
||||
from . import logger, comic
|
||||
from .constants import BookMeta
|
||||
|
||||
@ -69,16 +65,13 @@ except ImportError as e:
|
||||
use_fb2_meta = False
|
||||
|
||||
try:
|
||||
from PIL import Image, ImageOps
|
||||
from PIL import PILImage
|
||||
from PIL import __version__ as PILversion
|
||||
use_PIL = True
|
||||
except ImportError as e:
|
||||
log.debug('cannot import Pillow, using png and webp images as cover will not work: %s', e)
|
||||
use_generic_pdf_cover = True
|
||||
use_PIL = False
|
||||
|
||||
|
||||
|
||||
__author__ = 'lemmsh'
|
||||
|
||||
|
||||
@ -146,119 +139,15 @@ def pdf_meta(tmp_file_path, original_file_name, original_file_extension):
|
||||
languages="")
|
||||
|
||||
|
||||
def CMYKInvert(img):
|
||||
return Image.merge(img.mode,[ImageOps.invert(b.convert('L')) for b in img.split()])
|
||||
|
||||
def tiff_header_for_CCITT(width, height, img_size, CCITT_group=4):
|
||||
tiff_header_struct = '<' + '2s' + 'h' + 'l' + 'h' + 'hhll' * 8 + 'h'
|
||||
return struct.pack(tiff_header_struct,
|
||||
b'II', # Byte order indication: Little indian
|
||||
42, # Version number (always 42)
|
||||
8, # Offset to first IFD
|
||||
8, # Number of tags in IFD
|
||||
256, 4, 1, width, # ImageWidth, LONG, 1, width
|
||||
257, 4, 1, height, # ImageLength, LONG, 1, lenght
|
||||
258, 3, 1, 1, # BitsPerSample, SHORT, 1, 1
|
||||
259, 3, 1, CCITT_group, # Compression, SHORT, 1, 4 = CCITT Group 4 fax encoding
|
||||
262, 3, 1, 0, # Threshholding, SHORT, 1, 0 = WhiteIsZero
|
||||
273, 4, 1, struct.calcsize(tiff_header_struct), # StripOffsets, LONG, 1, len of header
|
||||
278, 4, 1, height, # RowsPerStrip, LONG, 1, lenght
|
||||
279, 4, 1, img_size, # StripByteCounts, LONG, 1, size of image
|
||||
0 # last IFD
|
||||
)
|
||||
|
||||
def pdf_preview(tmp_file_path, tmp_dir):
|
||||
if use_generic_pdf_cover:
|
||||
return None
|
||||
else:
|
||||
if use_PIL:
|
||||
try:
|
||||
input1 = PdfFileReader(open(tmp_file_path, 'rb'), strict=False)
|
||||
page0 = input1.getPage(0)
|
||||
mediaBox = page0['/MediaBox']
|
||||
box = page0['/CropBox'] if '/CropBox' in page0 else mediaBox
|
||||
xObject = page0['/Resources']['/XObject'].getObject()
|
||||
|
||||
for obj in xObject:
|
||||
if xObject[obj]['/Subtype'] == '/Image':
|
||||
size = (xObject[obj]['/Width'], xObject[obj]['/Height'])
|
||||
data = xObject[obj]._data
|
||||
mode = "P"
|
||||
if xObject[obj]['/ColorSpace'] == '/DeviceRGB':
|
||||
mode = "RGB"
|
||||
if xObject[obj]['/ColorSpace'] == '/DeviceCMYK':
|
||||
mode = "CMYK"
|
||||
if '/Filter' in xObject[obj]:
|
||||
if xObject[obj]['/Filter'] == '/FlateDecode':
|
||||
img = Image.frombytes(mode, size, data)
|
||||
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.png"
|
||||
img.save(filename=os.path.join(tmp_dir, cover_file_name))
|
||||
return cover_file_name
|
||||
# img.save(obj[1:] + ".png")
|
||||
elif xObject[obj]['/Filter'] == '/DCTDecode':
|
||||
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
|
||||
img = open(cover_file_name, "wb")
|
||||
img.write(data)
|
||||
img.close()
|
||||
# Post processing
|
||||
img2 = Image.open(cover_file_name)
|
||||
width, height = img2.size
|
||||
if mode == 'CMYK':
|
||||
img2 = CMYKInvert(img2)
|
||||
img2 = img2.crop((box[0]/mediaBox[2]*width,
|
||||
box[1]/mediaBox[3]*height,
|
||||
box[2]/mediaBox[2]*width,
|
||||
box[3]/mediaBox[3]*height))
|
||||
img2.save(cover_file_name)
|
||||
return cover_file_name
|
||||
elif xObject[obj]['/Filter'] == '/JPXDecode':
|
||||
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jp2"
|
||||
img = open(cover_file_name, "wb")
|
||||
img.write(data)
|
||||
img.close()
|
||||
# Post processing
|
||||
img2 = Image.open(cover_file_name)
|
||||
width, height = img2.size
|
||||
if mode == 'CMYK':
|
||||
img2 = CMYKInvert(img2)
|
||||
img2 = img2.crop((box[0]/mediaBox[2]*width,
|
||||
box[1]/mediaBox[3]*height,
|
||||
box[2]/mediaBox[2]*width,
|
||||
box[3]/mediaBox[3]*height))
|
||||
img2.save(cover_file_name)
|
||||
return cover_file_name
|
||||
elif xObject[obj]['/Filter'] == '/CCITTFaxDecode':
|
||||
if xObject[obj]['/DecodeParms']['/K'] == -1:
|
||||
CCITT_group = 4
|
||||
else:
|
||||
CCITT_group = 3
|
||||
width = xObject[obj]['/Width']
|
||||
height = xObject[obj]['/Height']
|
||||
img_size = len(data)
|
||||
tiff_header = tiff_header_for_CCITT(width, height, img_size, CCITT_group)
|
||||
cover_file_name_tiff = os.path.splitext(tmp_file_path)[0] + obj[1:] + '.tiff'
|
||||
cover_file_name = os.path.splitext(tmp_file_path)[0] + obj[1:] + '.jpg'
|
||||
img = open(cover_file_name_tiff, "wb")
|
||||
img.write(tiff_header + data)
|
||||
img.close()
|
||||
# Post processing
|
||||
img2 = Image.open(cover_file_name_tiff)
|
||||
if img2.mode == '1':
|
||||
img2 = ImageOps.invert(img2.convert('RGB'))
|
||||
img2.save(cover_file_name)
|
||||
return cover_file_name
|
||||
else:
|
||||
img = Image.frombytes(mode, size, data)
|
||||
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.png"
|
||||
img.save(filename=os.path.join(tmp_dir, cover_file_name))
|
||||
return cover_file_name
|
||||
# img.save(obj[1:] + ".png")
|
||||
except Exception as ex:
|
||||
print(ex)
|
||||
|
||||
try:
|
||||
cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
|
||||
with Image(filename=tmp_file_path + "[0]", resolution=150) as img:
|
||||
with Image() as img:
|
||||
img.options["pdf:use-cropbox"] = "true"
|
||||
img.read(filename=tmp_file_path + '[0]', resolution = 150)
|
||||
img.compression_quality = 88
|
||||
img.save(filename=os.path.join(tmp_dir, cover_file_name))
|
||||
return cover_file_name
|
||||
|
||||
Loading…
Reference in New Issue
Block a user