173 lines
4.4 KiB
Python
173 lines
4.4 KiB
Python
#!/usr/bin/python
|
|
|
|
"""This module wraps up libvips in a less awful interface.
|
|
|
|
Author: J.Cupitt
|
|
GNU LESSER GENERAL PUBLIC LICENSE
|
|
"""
|
|
|
|
import logging
|
|
import ctypes
|
|
|
|
import vipsobject
|
|
|
|
# image enums
|
|
class VipsDemandStyle:
|
|
SMALLTILE = 0
|
|
FATSTRIP = 1
|
|
THINSTRIP = 2
|
|
ANY = 3
|
|
|
|
# turn 3 into 'ANY', handy for printing
|
|
# is there a clever way to define this in a base Enum class? I can't think
|
|
# of it
|
|
@staticmethod
|
|
def name(value):
|
|
return vipsobject.class_value(VipsDemandStyle, value)
|
|
|
|
class VipsInterpretation:
|
|
MULTIBAND = 0
|
|
B_W = 1
|
|
HISTOGRAM = 10
|
|
FOURIER = 24
|
|
XYZ = 12
|
|
LAB = 13
|
|
CMYK = 15
|
|
LABQ = 16
|
|
RGB = 17
|
|
UCS = 18
|
|
LCH = 19
|
|
LABS = 21
|
|
sRGB = 22
|
|
YXY = 23
|
|
RGB16 = 25
|
|
GREY16 = 26
|
|
|
|
@staticmethod
|
|
def name(value):
|
|
print currentclass
|
|
return vipsobject.class_value(VipsInterpretation, value)
|
|
|
|
class VipsBandFormat:
|
|
NOTSET = -1
|
|
UCHAR = 0
|
|
CHAR = 1
|
|
USHORT = 2
|
|
SHORT = 3
|
|
UINT = 4
|
|
INT = 5
|
|
FLOAT = 6
|
|
COMPLEX = 7
|
|
DOUBLE = 8,
|
|
DPCOMPLEX = 9
|
|
LAST = 10
|
|
|
|
@staticmethod
|
|
def name(value):
|
|
return vipsobject.class_value(VipsBandFormat, value)
|
|
|
|
class VipsCoding:
|
|
NONE = 0
|
|
LABQ = 2
|
|
RAD = 6
|
|
|
|
@staticmethod
|
|
def name(value):
|
|
return vipsobject.class_value(VipsCoding, value)
|
|
|
|
libvips = vipsobject.libvips
|
|
|
|
vips_image_new = libvips.vips_image_new
|
|
vips_image_new.restype = ctypes.c_void_p
|
|
vips_image_new.errcheck = vipsobject.check_pointer_return
|
|
|
|
vips_image_new_from_file = libvips.vips_image_new_from_file
|
|
vips_image_new_from_file.argtypes = [ctypes.c_char_p]
|
|
vips_image_new_from_file.restype = ctypes.c_void_p
|
|
vips_image_new_from_file.errcheck = vipsobject.check_pointer_return
|
|
|
|
vips_image_new_mode = libvips.vips_image_new_mode
|
|
vips_image_new_mode.argtypes = [ctypes.c_char_p, ctypes.c_char_p]
|
|
vips_image_new_mode.restype = ctypes.c_void_p
|
|
vips_image_new_mode.errcheck = vipsobject.check_pointer_return
|
|
|
|
vips_image_write = libvips.vips_image_write
|
|
vips_image_write.argtypes = [ctypes.c_void_p, ctypes.c_char_p]
|
|
vips_image_write.restype = ctypes.c_void_p
|
|
vips_image_write.errcheck = vipsobject.check_int_return
|
|
|
|
vips_image_get_xres = libvips.vips_image_get_xres
|
|
vips_image_get_xres.restype = ctypes.c_double;
|
|
|
|
vips_image_get_yres = libvips.vips_image_get_yres
|
|
vips_image_get_yres.restype = ctypes.c_double;
|
|
|
|
vips_operation_new = libvips.vips_operation_new
|
|
vips_operation_new.argtypes = [ctypes.c_char_p]
|
|
vips_operation_new.restype = ctypes.c_void_p
|
|
vips_operation_new.errcheck = vipsobject.check_pointer_return
|
|
|
|
def vips_call_instance(self, name, args):
|
|
logging.debug('vipsimage: vips_call_instance name=%s, self=%s, args=%s' %
|
|
(name, self, args))
|
|
operation = vips_operation_new(name)
|
|
|
|
class VipsImage(vipsobject.VipsObject):
|
|
"""Manipulate a libvips image."""
|
|
|
|
def __init__(self, filename = None, mode = None):
|
|
logging.debug('vipsimage: init')
|
|
|
|
vipsobject.VipsObject.__init__(self)
|
|
|
|
if filename == None and mode == None:
|
|
self.vipsobject = vips_image_new()
|
|
elif filename != None and mode == None:
|
|
self.vipsobject = vips_image_new_from_file(filename)
|
|
else:
|
|
self.vipsobject = vips_image_new_mode(filename, mode)
|
|
|
|
logging.debug('vipsimage: made %s' % hex(self.vipsobject))
|
|
|
|
self.enable_finalize()
|
|
|
|
def __getattr__(self, name):
|
|
logging.debug('vipsimage: __getattr__ %s' % name)
|
|
return lambda *args: vips_call_instance(self, name, args)
|
|
|
|
def width(self):
|
|
return libvips.vips_image_get_width(self.vipsobject)
|
|
|
|
def height(self):
|
|
return libvips.vips_image_get_height(self.vipsobject)
|
|
|
|
def bands(self):
|
|
return libvips.vips_image_get_bands(self.vipsobject)
|
|
|
|
def format(self):
|
|
return libvips.vips_image_get_format(self.vipsobject)
|
|
|
|
def coding(self):
|
|
return libvips.vips_image_get_coding(self.vipsobject)
|
|
|
|
def interpretation(self):
|
|
return libvips.vips_image_get_interpretation(self.vipsobject)
|
|
|
|
def xres(self):
|
|
return vips_image_get_xres(self.vipsobject)
|
|
|
|
def yres(self):
|
|
return vips_image_get_yres(self.vipsobject)
|
|
|
|
def xoffset(self):
|
|
return libvips.vips_image_get_xoffset(self.vipsobject)
|
|
|
|
def yoffset(self):
|
|
return libvips.vips_image_get_yoffset(self.vipsobject)
|
|
|
|
def write(self, filename):
|
|
vips_image_write(self.vipsobject, filename)
|
|
|
|
|
|
|