mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 11:28:58 +03:00
0116c9240e
* EMF: support negative bounding box coordinates Similar to placeable WMF, bounding box coordinates should be interpreted as signed integer, otherwise opening EMF file with negative (x0,y0) fails. * Basic load tests for WMF and EMF formats * WMF/WMF tests: just test open(), not load() Not sure why load() fails on Debian build. Well, at least we can test open(). * WMF/EMF: Unpack signed integers using unpack() * WMF/EMF: Compare to reference PNG rendering * EMF/WMF comparison: use assert_image_similar() * Use similarity epsilon 0.5 for WMF, as vector rendering looks different across Windows platforms * Trigger rebuild
93 lines
1.8 KiB
Python
93 lines
1.8 KiB
Python
#
|
|
# The Python Imaging Library.
|
|
# $Id$
|
|
#
|
|
# Binary input/output support routines.
|
|
#
|
|
# Copyright (c) 1997-2003 by Secret Labs AB
|
|
# Copyright (c) 1995-2003 by Fredrik Lundh
|
|
# Copyright (c) 2012 by Brian Crowell
|
|
#
|
|
# See the README file for information on usage and redistribution.
|
|
#
|
|
|
|
from struct import unpack, pack
|
|
|
|
if bytes is str:
|
|
def i8(c):
|
|
return ord(c)
|
|
|
|
def o8(i):
|
|
return chr(i & 255)
|
|
else:
|
|
def i8(c):
|
|
return c if c.__class__ is int else c[0]
|
|
|
|
def o8(i):
|
|
return bytes((i & 255,))
|
|
|
|
|
|
# Input, le = little endian, be = big endian
|
|
# TODO: replace with more readable struct.unpack equivalent
|
|
def i16le(c, o=0):
|
|
"""
|
|
Converts a 2-bytes (16 bits) string to an unsigned integer.
|
|
|
|
c: string containing bytes to convert
|
|
o: offset of bytes to convert in string
|
|
"""
|
|
return unpack("<H", c[o:o+2])[0]
|
|
|
|
def si16le(c, o=0):
|
|
"""
|
|
Converts a 2-bytes (16 bits) string to a signed integer.
|
|
|
|
c: string containing bytes to convert
|
|
o: offset of bytes to convert in string
|
|
"""
|
|
return unpack("<h", c[o:o+2])[0]
|
|
|
|
|
|
def i32le(c, o=0):
|
|
"""
|
|
Converts a 4-bytes (32 bits) string to an unsigned integer.
|
|
|
|
c: string containing bytes to convert
|
|
o: offset of bytes to convert in string
|
|
"""
|
|
return unpack("<I", c[o:o+4])[0]
|
|
|
|
def si32le(c, o=0):
|
|
"""
|
|
Converts a 4-bytes (32 bits) string to a signed integer.
|
|
|
|
c: string containing bytes to convert
|
|
o: offset of bytes to convert in string
|
|
"""
|
|
return unpack("<i", c[o:o+4])[0]
|
|
|
|
|
|
def i16be(c, o=0):
|
|
return unpack(">H", c[o:o+2])[0]
|
|
|
|
|
|
def i32be(c, o=0):
|
|
return unpack(">I", c[o:o+4])[0]
|
|
|
|
|
|
# Output, le = little endian, be = big endian
|
|
def o16le(i):
|
|
return pack("<H", i)
|
|
|
|
|
|
def o32le(i):
|
|
return pack("<I", i)
|
|
|
|
|
|
def o16be(i):
|
|
return pack(">H", i)
|
|
|
|
|
|
def o32be(i):
|
|
return pack(">I", i)
|