def __init__(self, fp):
self.fp = fp
self.queue = []
if not Image.has_feature("crc32"):
self.crc = self.crc_skip
def load(self):
"Load image data based on tile list"
pixel = Image.Image.load(self)
if self.tile is None:
raise IOError("cannot load this image")
if not self.tile:
return pixel
self.map = None
readonly = 0
if self.filename and len(self.tile) == 1:
# try memory mapping
d, e, o, a = self.tile[0]
if d == "raw" and a[0] == self.mode and a[0] in Image._MAPMODES:
try:
if Image.has_feature("map"):
# use built-in mapper
self.map = Image.core.map(self.filename)
self.map.seek(o)
self.im = self.map.readimage(self.mode, self.size,
a[1], a[2])
else:
# use mmap, if possible
import mmap
file = open(self.filename, "r+")
size = os.path.getsize(self.filename)
# FIXME: on Unix, use PROT_READ etc
self.map = mmap.mmap(file.fileno(), size)
self.im = Image.core.map_buffer(
self.map, self.size, d, e, o, a)
readonly = 1
except (AttributeError, EnvironmentError, ImportError):
self.map = None
self.load_prepare()
# look for read/seek overrides
try:
read = self.load_read
except AttributeError:
read = self.fp.read
try:
seek = self.load_seek
except AttributeError:
seek = self.fp.seek
if not self.map:
sort_tiles(self.tile)
try:
# FIXME: This is a hack to handle TIFF's JpegTables tag.
prefix = self.tile_prefix
except AttributeError:
prefix = ""
for d, e, o, a in self.tile:
d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
seek(o)
try:
d.setimage(self.im, e)
except ValueError:
continue
b = prefix
t = len(b)
while True:
s = read(self.decodermaxblock)
if isinstance(s, ImageSupport.ByteArray):
s = s.tostring()
if not s:
self.tile = []
raise IOError(
"image file is truncated (%d bytes not processed)"
% len(b))
b = b + s
n, e = d.decode(b)
if n < 0:
break
b = b[n:]
t = t + n
self.tile = []
self.readonly = readonly
self.fp = None # might be shared
if not self.map and e < 0:
raise_ioerror(e)
# post processing
if hasattr(self, "tile_post_rotate"):
# FIXME: This is a hack to handle rotated PCD's
self.im = self.im.rotate(self.tile_post_rotate)
self.size = self.im.size
self.load_end()
return Image.Image.load(self)
def load(self):
"Load image data based on tile list"
pixel = Image.Image.load(self)
if self.tile is None:
raise IOError("cannot load this image")
if not self.tile:
return pixel
self.map = None
readonly = 0
if self.filename and len(self.tile) == 1:
# try memory mapping
d, e, o, a = self.tile[0]
if d == "raw" and a[0] == self.mode and a[0] in Image._MAPMODES:
try:
if Image.has_feature("map"):
# use built-in mapper
self.map = Image.core.map(self.filename)
self.map.seek(o)
self.im = self.map.readimage(
self.mode, self.size, a[1], a[2]
)
else:
# use mmap, if possible
import mmap
file = open(self.filename, "r+")
size = os.path.getsize(self.filename)
# FIXME: on Unix, use PROT_READ etc
self.map = mmap.mmap(file.fileno(), size)
self.im = Image.core.map_buffer(
self.map, self.size, d, e, o, a
)
readonly = 1
except (AttributeError, EnvironmentError, ImportError):
self.map = None
self.load_prepare()
# look for read/seek overrides
try:
read = self.load_read
except AttributeError:
read = self.fp.read
try:
seek = self.load_seek
except AttributeError:
seek = self.fp.seek
if not self.map:
sort_tiles(self.tile)
try:
# FIXME: This is a hack to handle TIFF's JpegTables tag.
prefix = self.tile_prefix
except AttributeError:
prefix = ""
for d, e, o, a in self.tile:
d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
seek(o)
try:
d.setimage(self.im, e)
except ValueError:
continue
b = prefix
t = len(b)
while True:
s = read(self.decodermaxblock)
if isinstance(s, ImageSupport.ByteArray):
s = s.tostring()
if not s:
self.tile = []
raise IOError("image file is truncated (%d bytes not processed)" % len(b))
b = b + s
n, e = d.decode(b)
if n < 0:
break
b = b[n:]
t = t + n
self.tile = []
self.readonly = readonly
self.fp = None # might be shared
if not self.map and e < 0:
raise_ioerror(e)
# post processing
if hasattr(self, "tile_post_rotate"):
# FIXME: This is a hack to handle rotated PCD's
self.im = self.im.rotate(self.tile_post_rotate)
self.size = self.im.size
self.load_end()
return Image.Image.load(self)
import Image
import ImageFile
_handler = None
##
# Install application-specific WMF image handler.
#
# @param handler Handler object.
def register_handler(handler):
global _handler
_handler = handler
if Image.has_feature("drawwmf"):
# install default handler (windows only)
class WmfHandler(object):
def open(self, im):
im.mode = "RGB"
self.bbox = im.info["wmf_bbox"]
def load(self, im):
im.fp.seek(0) # rewind
return Image.fromstring(
"RGB", im.size,
Image.core.drawwmf(im.fp.read(), im.size, self.bbox),
"raw", "BGR", (im.size[0]*3 + 3) & -4, -1
)
import ImageFile
_handler = None
##
# Install application-specific WMF image handler.
#
# @param handler Handler object.
def register_handler(handler):
global _handler
_handler = handler
if Image.has_feature("drawwmf"):
# install default handler (windows only)
class WmfHandler(object):
def open(self, im):
im.mode = "RGB"
self.bbox = im.info["wmf_bbox"]
def load(self, im):
im.fp.seek(0) # rewind
return Image.fromstring(
"RGB", im.size,
Image.core.drawwmf(im.fp.read(), im.size, self.bbox), "raw",
"BGR", (im.size[0] * 3 + 3) & -4, -1)
register_handler(WmfHandler())
