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Speed up generation of thumbnails for catalog

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This commit is contained in:
Kovid Goyal 2010-01-24 11:34:42 -07:00
parent 6b59d8aa96
commit 0b4de38330
1 changed files with 25 additions and 24 deletions
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49
src/calibre/library/catalog.py
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@ -751,7 +751,9 @@ class EPUB_MOBI(CatalogPlugin):
self.generateHTMLByTags()
if getattr(self.reporter, 'cancel_requested', False): return 1
self.generateThumbnails()
from calibre.utils.PythonMagickWand import ImageMagick
with ImageMagick():
self.generateThumbnails()
if getattr(self.reporter, 'cancel_requested', False): return 1
self.generateOPF()
@ -2343,29 +2345,28 @@ class EPUB_MOBI(CatalogPlugin):
def generateThumbnail(self, title, image_dir, thumb_file):
import calibre.utils.PythonMagickWand as pw
with pw.ImageMagick():
try:
img = pw.NewMagickWand()
if img < 0:
raise RuntimeError('generate_thumbnail(): Cannot create wand')
# Read the cover
if not pw.MagickReadImage(img,
title['cover'].encode(filesystem_encoding)):
print 'Failed to read cover image from: %s' % title['cover']
raise IOError
thumb = pw.CloneMagickWand(img)
if thumb < 0:
print 'generate_thumbnail(): Cannot clone cover'
raise RuntimeError
# img, width, height
pw.MagickThumbnailImage(thumb, 75, 100)
pw.MagickWriteImage(thumb, os.path.join(image_dir, thumb_file))
pw.DestroyMagickWand(thumb)
pw.DestroyMagickWand(img)
except IOError:
print "generate_thumbnail() IOError with %s" % title['title']
except RuntimeError:
print "generate_thumbnail() RuntimeError with %s" % title['title']
try:
img = pw.NewMagickWand()
if img < 0:
raise RuntimeError('generate_thumbnail(): Cannot create wand')
# Read the cover
if not pw.MagickReadImage(img,
title['cover'].encode(filesystem_encoding)):
print 'Failed to read cover image from: %s' % title['cover']
raise IOError
thumb = pw.CloneMagickWand(img)
if thumb < 0:
print 'generate_thumbnail(): Cannot clone cover'
raise RuntimeError
# img, width, height
pw.MagickThumbnailImage(thumb, 75, 100)
pw.MagickWriteImage(thumb, os.path.join(image_dir, thumb_file))
pw.DestroyMagickWand(thumb)
pw.DestroyMagickWand(img)
except IOError:
print "generate_thumbnail() IOError with %s" % title['title']
except RuntimeError:
print "generate_thumbnail() RuntimeError with %s" % title['title']
def processSpecialTags(self, tags, this_title, opts):
tag_list = []