libvips/python/old/vipsoperation.py

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2011-12-23 16:20:54 +01:00
#!/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 gobject
import vipsobject
libvips = vipsobject.libvips
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 show_args(operation, pspec, arg_class, arg_instance, a, b):
name = vipsobject.g_param_spec_get_name(pspec)
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)
vipsobject.vips_object_print(operation)
vipsobject.vips_argument_map(operation,
vipsobject.VipsArgumentMapFn(show_args),None, None)
class VipsOperation(vipsobject.VipsObject):
"""Call a libvips operation."""
def __init__(self, name):
logging.debug('vipsoperation: init %s', name)
vipsobject.VipsObject.__init__(self)
self.vipsobject = vips_operation_new(name)
self.enable_finalize()
def call