639 lines
20 KiB
Python
639 lines
20 KiB
Python
#!/usr/bin/python
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import sys
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import re
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import logging
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# you might need this in your .bashrc
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# export GI_TYPELIB_PATH=$VIPSHOME/lib/girepository-1.0
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from gi.repository import GLib, GObject, Vips
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# start up vips!
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Vips.init(sys.argv[0])
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# need the gtypes for various vips types
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vips_type_array_int = GObject.GType.from_name("VipsArrayInt")
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vips_type_array_double = GObject.GType.from_name("VipsArrayDouble")
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vips_type_array_image = GObject.GType.from_name("VipsArrayImage")
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vips_type_blob = GObject.GType.from_name("VipsBlob")
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vips_type_image = GObject.GType.from_name("VipsImage")
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vips_type_operation = GObject.GType.from_name("VipsOperation")
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unpack_types = [Vips.Blob, Vips.ArrayDouble, Vips.ArrayImage, Vips.ArrayInt]
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def isunpack(obj):
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for t in unpack_types:
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if isinstance(obj, t):
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return True
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return False
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class Error(Exception):
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"""An error from vips.
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message -- a high-level description of the error
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detail -- a string with some detailed diagnostics
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"""
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def __init__(self, message, detail = None):
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self.message = message
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if detail == None:
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detail = Vips.error_buffer()
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Vips.error_clear()
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self.detail = detail
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logging.debug('vips: Error %s %s', self.message, self.detail)
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def __str__(self):
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return '%s\n %s' % (self.message, self.detail)
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class Argument:
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def __init__(self, op, prop):
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self.op = op;
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self.prop = prop;
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self.name = re.sub("-", "_", prop.name);
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self.flags = op.get_argument_flags(self.name)
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self.priority = op.get_argument_priority(self.name)
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self.isset = op.argument_isset(self.name)
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def arrayize(self, vips_type_array, vips_cast, value):
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if GObject.type_is_a(self.prop.value_type, vips_type_array):
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if not isinstance(value, list):
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value = [value]
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value = vips_cast(value)
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return value
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def set_value(self, value):
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logging.debug('assigning %s to %s' % (value, self.name))
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logging.debug('%s needs a %s' % (self.name, self.prop.value_type))
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# array-ize some types, if necessary
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value = self.arrayize(vips_type_array_int, Vips.ArrayInt.new, value)
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value = self.arrayize(vips_type_array_double, Vips.ArrayDouble.new, value)
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value = self.arrayize(vips_type_array_image, Vips.ArrayImage.new, value)
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# blob-ize
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if GObject.type_is_a(self.prop.value_type, vips_type_blob):
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if not isinstance(value, Vips.Blob):
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value = Vips.Blob.new(None, value)
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# MODIFY input images need to be copied before assigning them
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if self.flags & Vips.ArgumentFlags.MODIFY:
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value = value.copy()
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logging.debug('assigning %s' % self.prop.value_type)
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self.op.props.__setattr__(self.name, value)
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def get_value(self):
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value = self.op.props.__getattribute__(self.name)
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logging.debug('read out %s from %s' % (value, self.name))
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# turn VipsBlobs into strings, VipsArrayDouble into lists etc.
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# FIXME ... this will involve a copy, we should use
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# buffer() instead
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if isunpack(value):
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value = value.get()
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return value
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def _call_base(name, required, optional, self = None, option_string = None):
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logging.debug('_call_base name=%s, required=%s optional=%s' %
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(name, required, optional))
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if self:
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logging.debug('_call_base self=%s' % self)
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if option_string:
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logging.debug('_call_base option_string = %s' % option_string)
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try:
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op = Vips.Operation.new(name)
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except TypeError, e:
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raise Error('No such operator.')
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# set str options first so the user can't override things we set
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# deliberately and break stuff
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if option_string:
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if op.set_from_string(option_string) != 0:
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raise Error('Bad arguments.')
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# find all the args for this op, sort into priority order
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args = [Argument(op, x) for x in op.props]
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args.sort(lambda a, b: a.priority - b.priority)
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enm = Vips.ArgumentFlags
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# find all required, unassigned input args
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required_input = [x for x in args if x.flags & enm.INPUT and
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x.flags & enm.REQUIRED and
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not x.isset]
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# do we have a non-None self pointer? this is used to set the first
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# compatible input arg
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if self is not None:
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found = False
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for x in required_input:
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if GObject.type_is_a(self, x.prop.value_type):
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x.set_value(self)
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required_input.remove(x)
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found = True
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break
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if not found:
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raise Error('Bad arguments.', 'No %s argument to %s.' %
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(str(self.__class__), name))
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if len(required_input) != len(required):
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raise Error('Wrong number of arguments.',
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'%s needs %d arguments, you supplied %d' %
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(name, len(required_input), len(required)))
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for i in range(len(required_input)):
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required_input[i].set_value(required[i])
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# find all optional, unassigned input args ... make a hash from name to
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# Argument
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optional_input = {x.name: x for x in args if x.flags & enm.INPUT and
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not x.flags & enm.REQUIRED and
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not x.isset}
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# find all optional output args ... we use "x = True"
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# in args to mean add that to output
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optional_output = {x.name: x for x in args if x.flags & enm.OUTPUT and
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not x.flags & enm.REQUIRED}
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# set optional input args
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for key in optional.keys():
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if key in optional_input:
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optional_input[key].set_value(optional[key])
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elif key in optional_output:
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# must be a literal True value
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if optional[key] is not True:
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raise Error('Optional output argument must be True.',
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'Argument %s should equal True.' % key)
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else:
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raise Error('Unknown argument.',
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'Operator %s has no argument %s' % (name, key))
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# call
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op2 = Vips.cache_operation_build(op)
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if op2 == None:
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raise Error('Error calling operator %s.' % name)
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# rescan args if op2 is different from op
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if op2 != op:
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args = [Argument(op2, x) for x in op2.props]
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args.sort(lambda a, b: a.priority - b.priority)
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optional_output = {x.name: x for x in args if x.flags & enm.OUTPUT and
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not x.flags & enm.REQUIRED}
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# gather output args
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out = []
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for x in args:
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# required output arg
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if x.flags & enm.OUTPUT and x.flags & enm.REQUIRED:
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out.append(x.get_value())
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# modified input arg ... this will get the result of the copy() we
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# did above
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if x.flags & enm.INPUT and x.flags & enm.MODIFY:
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out.append(x.get_value())
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out_dict = {}
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for x in optional.keys():
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if x in optional_output:
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out_dict[x] = optional_output[x].get_value()
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if out_dict != {}:
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out.append(out_dict)
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if len(out) == 1:
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out = out[0]
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elif len(out) == 0:
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out = None
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# unref everything now we have refs to all outputs we want
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op2.unref_outputs()
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logging.debug('success')
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return out
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# general user entrypoint
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def call(name, *args, **kwargs):
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return _call_base(name, args, kwargs)
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# here from getattr ... try to run the attr as a method
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def _call_instance(self, name, args, kwargs):
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return _call_base(name, args, kwargs, self)
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# this is a class method
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def vips_image_new_from_file(cls, vips_filename, **kwargs):
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filename = Vips.filename_get_filename(vips_filename)
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option_string = Vips.filename_get_options(vips_filename)
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loader = Vips.Foreign.find_load(filename)
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if loader == None:
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raise Error('No known loader for "%s".' % filename)
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logging.debug('Image.new_from_file: loader = %s' % loader)
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return _call_base(loader, [filename], kwargs, None, option_string)
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# this is a class method
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def vips_image_new_from_buffer(cls, data, option_string, **kwargs):
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loader = Vips.Foreign.find_load_buffer(data)
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if loader == None:
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raise Error('No known loader for buffer.')
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logging.debug('Image.new_from_buffer: loader = %s' % loader)
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# this is a class method
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def vips_image_new_from_array(cls, array, scale = 1, offset = 0):
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# we accept a 1D array and assume height == 1, or a 2D array and check all
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# lines are the same length
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if not isinstance(array, list):
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raise TypeError('new_from_array() takes a list argument')
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if not isinstance(array[0], list):
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height = 1
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width = len(array)
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else:
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flat_array = array[0]
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height = len(array)
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width = len(array[0])
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for i in range(1, height):
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if len(array[i]) != width:
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raise TypeError('new_from_array() array not rectangular')
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flat_array += array[i]
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array = flat_array
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image = cls.new_matrix_from_array(width, height, array)
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# be careful to set them as double
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image.set('scale', float(scale))
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image.set('offset', float(offset))
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return image
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def vips_image_getattr(self, name):
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logging.debug('Image.__getattr__ %s' % name)
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# look up in props first, eg. x.props.width
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if name in dir(self.props):
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return getattr(self.props, name)
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# 'format' is a reserved word, annoying, have bandfmt as an alias
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if name == 'bandfmt':
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return getattr(self.props, 'format')
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return lambda *args, **kwargs: _call_instance(self, name, args, kwargs)
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def vips_image_write_to_file(self, vips_filename, **kwargs):
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filename = Vips.filename_get_filename(vips_filename)
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option_string = Vips.filename_get_options(vips_filename)
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saver = Vips.Foreign.find_save(filename)
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if saver == None:
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raise Error('No known saver for "%s".' % filename)
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logging.debug('Image.write_to_file: saver = %s' % saver)
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_call_base(saver, [filename], kwargs, self, option_string)
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def vips_image_write_to_buffer(self, vips_filename, **kwargs):
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filename = Vips.filename_get_filename(vips_filename)
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option_string = Vips.filename_get_options(vips_filename)
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saver = Vips.Foreign.find_save_buffer(filename)
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if saver == None:
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raise Error('No known saver for "%s".' % filename)
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logging.debug('Image.write_to_buffer: saver = %s' % saver)
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return _call_base(saver, [], kwargs, self, option_string)
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def vips_bandsplit(self):
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return [self.extract_band(i) for i in range(0, self.bands)]
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def vips_maxpos(self):
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v, opts = self.max(x = True, y = True)
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x = opts['x']
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y = opts['y']
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return v, x, y
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def vips_minpos(self):
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v, opts = self.min(x = True, y = True)
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x = opts['x']
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y = opts['y']
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return v, x, y
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# apply a function to a thing, or map over a list
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# we often need to do something like (1.0 / other) and need to work for lists
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# as well as scalars
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def smap(func, x):
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if isinstance(x, list):
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return map(func, x)
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else:
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return func(x)
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def vips_add(self, other):
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if isinstance(other, Vips.Image):
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return self.add(other)
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else:
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return self.linear(1, other)
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def vips_sub(self, other):
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if isinstance(other, Vips.Image):
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return self.subtract(other)
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else:
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return self.linear(1, smap(lambda x: -1 * x, other))
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def vips_rsub(self, other):
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return self.linear(-1, other)
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def vips_mul(self, other):
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if isinstance(other, Vips.Image):
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return self.multiply(other)
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else:
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return self.linear(other, 0)
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def vips_div(self, other):
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if isinstance(other, Vips.Image):
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return self.divide(other)
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else:
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return self.linear(smap(lambda x: 1.0 / x, other), 0)
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def vips_rdiv(self, other):
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return (self ** -1) * other
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def vips_floor(self):
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return self.round(Vips.OperationRound.FLOOR)
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def vips_ceil(self):
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return self.round(Vips.OperationRound.CEIL)
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def vips_rint(self):
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return self.round(Vips.OperationRound.RINT)
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def vips_floordiv(self, other):
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if isinstance(other, Vips.Image):
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return self.divide(other).floor()
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else:
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return self.linear(smap(lambda x: 1.0 / x, other), 0).floor()
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def vips_rfloordiv(self, other):
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return ((self ** -1) * other).floor()
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def vips_mod(self, other):
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if isinstance(other, Vips.Image):
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return self.remainder(other)
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else:
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return self.remainder_const(other)
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def vips_pow(self, other):
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if isinstance(other, Vips.Image):
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return self.math2(other, Vips.OperationMath2.POW)
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else:
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return self.math2_const(other, Vips.OperationMath2.POW)
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def vips_rpow(self, other):
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return self.math2_const(other, Vips.OperationMath2.WOP)
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def vips_lshift(self, other):
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if isinstance(other, Vips.Image):
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return self.boolean(other, Vips.OperationBoolean.LSHIFT)
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else:
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return self.boolean_const(other, Vips.OperationBoolean.LSHIFT)
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def vips_rshift(self, other):
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if isinstance(other, Vips.Image):
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return self.boolean(other, Vips.OperationBoolean.RSHIFT)
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else:
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return self.boolean_const(other, Vips.OperationBoolean.RSHIFT)
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def vips_and(self, other):
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if isinstance(other, Vips.Image):
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return self.boolean(other, Vips.OperationBoolean.AND)
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else:
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return self.boolean_const(other, Vips.OperationBoolean.AND)
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def vips_or(self, other):
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if isinstance(other, Vips.Image):
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return self.boolean(other, Vips.OperationBoolean.OR)
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else:
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return self.boolean_const(other, Vips.OperationBoolean.OR)
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def vips_xor(self, other):
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if isinstance(other, Vips.Image):
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return self.boolean(other, Vips.OperationBoolean.EOR)
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else:
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return self.boolean_const(other, Vips.OperationBoolean.EOR)
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def vips_more(self, other):
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if isinstance(other, Vips.Image):
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return self.relational(other, Vips.OperationRelational.MORE)
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else:
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return self.relational_const(other, Vips.OperationRelational.MORE)
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def vips_moreeq(self, other):
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if isinstance(other, Vips.Image):
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return self.relational(other, Vips.OperationRelational.MOREEQ)
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else:
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return self.relational_const(other, Vips.OperationRelational.MOREEQ)
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def vips_less(self, other):
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if isinstance(other, Vips.Image):
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return self.relational(other, Vips.OperationRelational.LESS)
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else:
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return self.relational_const(other, Vips.OperationRelational.LESS)
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def vips_lesseq(self, other):
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if isinstance(other, Vips.Image):
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return self.relational(other, Vips.OperationRelational.LESSEQ)
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else:
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return self.relational_const(other, Vips.OperationRelational.LESSEQ)
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def vips_equal(self, other):
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if isinstance(other, Vips.Image):
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return self.relational(other, Vips.OperationRelational.EQUAL)
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else:
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return self.relational_const(other, Vips.OperationRelational.EQUAL)
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def vips_notequal(self, other):
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if isinstance(other, Vips.Image):
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return self.relational(other, Vips.OperationRelational.NOTEQ)
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else:
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return self.relational_const(other, Vips.OperationRelational.NOTEQ)
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def vips_neg(self):
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return -1 * self
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def vips_pos(self):
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return self
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def vips_abs(self):
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return self.abs()
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def vips_invert(self):
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return self ^ -1
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def vips_real(self):
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return self.complexget(Vips.OperationComplexget.REAL)
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def vips_imag(self):
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return self.complexget(Vips.OperationComplexget.IMAG)
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def vips_polar(self):
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return self.complex(Vips.OperationComplex.POLAR)
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def vips_rect(self):
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return self.complex(Vips.OperationComplex.RECT)
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def vips_conj(self):
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return self.complex(Vips.OperationComplex.CONJ)
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def vips_sin(self):
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return self.math(Vips.OperationMath.SIN)
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def vips_cos(self):
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return self.math(Vips.OperationMath.COS)
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def vips_tan(self):
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return self.math(Vips.OperationMath.TAN)
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def vips_asin(self):
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return self.math(Vips.OperationMath.ASIN)
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def vips_acos(self):
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return self.math(Vips.OperationMath.ACOS)
|
|
|
|
def vips_atan(self):
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return self.math(Vips.OperationMath.ATAN)
|
|
|
|
def vips_log(self):
|
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return self.math(Vips.OperationMath.LOG)
|
|
|
|
def vips_log10(self):
|
|
return self.math(Vips.OperationMath.LOG10)
|
|
|
|
def vips_exp(self):
|
|
return self.math(Vips.OperationMath.EXP)
|
|
|
|
def vips_exp10(self):
|
|
return self.math(Vips.OperationMath.EXP10)
|
|
|
|
# paste our methods into Vips.Image
|
|
|
|
# class methods
|
|
setattr(Vips.Image, 'new_from_file', classmethod(vips_image_new_from_file))
|
|
setattr(Vips.Image, 'new_from_buffer', classmethod(vips_image_new_from_buffer))
|
|
setattr(Vips.Image, 'new_from_array', classmethod(vips_image_new_from_array))
|
|
|
|
# Search for all VipsOperation which don't have an input image object ... these
|
|
# become class methods
|
|
|
|
def vips_image_class_method(name, args, kwargs):
|
|
logging.debug('vips_image_class_method %s' % name)
|
|
|
|
# the first arg is the class we are called from ... drop it
|
|
args = tuple(list(args)[1::])
|
|
|
|
return _call_base(name, args, kwargs)
|
|
|
|
def define_class_methods(cls):
|
|
if not cls.is_abstract():
|
|
op = Vips.Operation.new(cls.name)
|
|
|
|
found = False
|
|
for prop in op.props:
|
|
flags = op.get_argument_flags(prop.name)
|
|
if flags & Vips.ArgumentFlags.INPUT and flags & Vips.ArgumentFlags.REQUIRED:
|
|
if GObject.type_is_a(vips_type_image, prop.value_type):
|
|
found = True
|
|
break
|
|
|
|
if not found:
|
|
gtype = Vips.type_find("VipsOperation", cls.name)
|
|
nickname = Vips.nickname_find(gtype)
|
|
logging.debug('adding %s as a class method' % nickname)
|
|
method = lambda *args, **kwargs: vips_image_class_method( nickname, args, kwargs)
|
|
setattr(Vips.Image, nickname, classmethod(method))
|
|
|
|
if len(cls.children) > 0:
|
|
for child in cls.children:
|
|
# not easy to get at the deprecated flag in an abtract type?
|
|
if cls.name != 'VipsWrap7':
|
|
define_class_methods(child)
|
|
|
|
define_class_methods(vips_type_operation)
|
|
|
|
# instance methods
|
|
Vips.Image.write_to_file = vips_image_write_to_file
|
|
Vips.Image.write_to_buffer = vips_image_write_to_buffer
|
|
# we can use Vips.Image.write_to_memory() directly
|
|
|
|
# a few useful things
|
|
Vips.Image.floor = vips_floor
|
|
Vips.Image.ceil = vips_ceil
|
|
Vips.Image.rint = vips_rint
|
|
Vips.Image.bandsplit = vips_bandsplit
|
|
Vips.Image.maxpos = vips_maxpos
|
|
Vips.Image.minpos = vips_minpos
|
|
Vips.Image.real = vips_real
|
|
Vips.Image.imag = vips_imag
|
|
Vips.Image.polar = vips_polar
|
|
Vips.Image.rect = vips_rect
|
|
Vips.Image.conj = vips_conj
|
|
Vips.Image.sin = vips_sin
|
|
Vips.Image.cos = vips_cos
|
|
Vips.Image.tan = vips_tan
|
|
Vips.Image.asin = vips_asin
|
|
Vips.Image.acos = vips_acos
|
|
Vips.Image.atan = vips_atan
|
|
Vips.Image.log = vips_log
|
|
Vips.Image.log10 = vips_log10
|
|
Vips.Image.exp = vips_exp
|
|
Vips.Image.exp10 = vips_exp10
|
|
|
|
# operator overloads
|
|
Vips.Image.__getattr__ = vips_image_getattr
|
|
Vips.Image.__add__ = vips_add
|
|
Vips.Image.__radd__ = vips_add
|
|
Vips.Image.__sub__ = vips_sub
|
|
Vips.Image.__rsub__ = vips_rsub
|
|
Vips.Image.__mul__ = vips_mul
|
|
Vips.Image.__rmul__ = vips_mul
|
|
Vips.Image.__div__ = vips_div
|
|
Vips.Image.__rdiv__ = vips_rdiv
|
|
Vips.Image.__floordiv__ = vips_floordiv
|
|
Vips.Image.__rfloordiv__ = vips_rfloordiv
|
|
Vips.Image.__mod__ = vips_mod
|
|
|
|
Vips.Image.__pow__ = vips_pow
|
|
Vips.Image.__rpow__ = vips_rpow
|
|
Vips.Image.__abs__ = vips_abs
|
|
|
|
Vips.Image.__lshift__ = vips_lshift
|
|
Vips.Image.__rshift__ = vips_rshift
|
|
Vips.Image.__and__ = vips_and
|
|
Vips.Image.__rand__ = vips_and
|
|
Vips.Image.__or__ = vips_or
|
|
Vips.Image.__ror__ = vips_or
|
|
Vips.Image.__xor__ = vips_xor
|
|
Vips.Image.__rxor__ = vips_xor
|
|
|
|
Vips.Image.__neg__ = vips_neg
|
|
Vips.Image.__pos__ = vips_pos
|
|
Vips.Image.__invert__ = vips_invert
|
|
|
|
Vips.Image.__lt__ = vips_less
|
|
Vips.Image.__le__ = vips_lesseq
|
|
Vips.Image.__gt__ = vips_more
|
|
Vips.Image.__ge__ = vips_moreeq
|
|
Vips.Image.__eq__ = vips_equal
|
|
Vips.Image.__ne__ = vips_notequal
|
|
|
|
# the cast operators int(), long() and float() must return numeric types, so we
|
|
# can't define them for images
|
|
|
|
# Add other classes to Vips
|
|
Vips.Error = Error
|
|
Vips.Argument = Argument
|
|
Vips.call = call
|
|
|