mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
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936 lines
35 KiB
936 lines
35 KiB
#!/usr/bin/env python |
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from __future__ import print_function |
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import hdr_parser, sys, re, os |
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from string import Template |
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if sys.version_info[0] >= 3: |
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from io import StringIO |
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else: |
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from cStringIO import StringIO |
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ignored_arg_types = ["RNG*"] |
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gen_template_check_self = Template(""" if(!PyObject_TypeCheck(self, &pyopencv_${name}_Type)) |
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return failmsgp("Incorrect type of self (must be '${name}' or its derivative)"); |
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$cname* _self_ = ${amp}((pyopencv_${name}_t*)self)->v${get}; |
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""") |
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gen_template_check_self_algo = Template(""" if(!PyObject_TypeCheck(self, &pyopencv_${name}_Type)) |
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return failmsgp("Incorrect type of self (must be '${name}' or its derivative)"); |
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$cname* _self_ = dynamic_cast<$cname*>(${amp}((pyopencv_${name}_t*)self)->v.get()); |
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""") |
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gen_template_call_constructor_prelude = Template("""self = PyObject_NEW(pyopencv_${name}_t, &pyopencv_${name}_Type); |
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new (&(self->v)) Ptr<$cname>(); // init Ptr with placement new |
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if(self) """) |
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gen_template_call_constructor = Template("""self->v.reset(new ${cname}${args})""") |
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gen_template_simple_call_constructor_prelude = Template("""self = PyObject_NEW(pyopencv_${name}_t, &pyopencv_${name}_Type); |
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if(self) """) |
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gen_template_simple_call_constructor = Template("""self->v = ${cname}${args}""") |
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gen_template_parse_args = Template("""const char* keywords[] = { $kw_list, NULL }; |
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if( PyArg_ParseTupleAndKeywords(args, kw, "$fmtspec", (char**)keywords, $parse_arglist)$code_cvt )""") |
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gen_template_func_body = Template("""$code_decl |
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$code_parse |
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{ |
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${code_prelude}ERRWRAP2($code_fcall); |
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$code_ret; |
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} |
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""") |
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py_major_version = sys.version_info[0] |
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if py_major_version >= 3: |
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head_init_str = "PyVarObject_HEAD_INIT(&PyType_Type, 0)" |
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else: |
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head_init_str = """PyObject_HEAD_INIT(&PyType_Type) |
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0,""" |
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gen_template_simple_type_decl = Template(""" |
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struct pyopencv_${name}_t |
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{ |
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PyObject_HEAD |
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${cname} v; |
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}; |
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static PyTypeObject pyopencv_${name}_Type = |
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{ |
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%s |
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MODULESTR".$wname", |
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sizeof(pyopencv_${name}_t), |
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}; |
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static void pyopencv_${name}_dealloc(PyObject* self) |
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{ |
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PyObject_Del(self); |
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} |
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template<> PyObject* pyopencv_from(const ${cname}& r) |
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{ |
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pyopencv_${name}_t *m = PyObject_NEW(pyopencv_${name}_t, &pyopencv_${name}_Type); |
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m->v = r; |
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return (PyObject*)m; |
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} |
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template<> bool pyopencv_to(PyObject* src, ${cname}& dst, const char* name) |
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{ |
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if( src == NULL || src == Py_None ) |
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return true; |
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if(!PyObject_TypeCheck(src, &pyopencv_${name}_Type)) |
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{ |
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failmsg("Expected ${cname} for argument '%%s'", name); |
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return false; |
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} |
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dst = ((pyopencv_${name}_t*)src)->v; |
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return true; |
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} |
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""" % head_init_str) |
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gen_template_type_decl = Template(""" |
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struct pyopencv_${name}_t |
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{ |
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PyObject_HEAD |
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Ptr<${cname1}> v; |
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}; |
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static PyTypeObject pyopencv_${name}_Type = |
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{ |
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%s |
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MODULESTR".$wname", |
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sizeof(pyopencv_${name}_t), |
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}; |
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static void pyopencv_${name}_dealloc(PyObject* self) |
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{ |
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((pyopencv_${name}_t*)self)->v.release(); |
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PyObject_Del(self); |
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} |
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template<> PyObject* pyopencv_from(const Ptr<${cname}>& r) |
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{ |
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pyopencv_${name}_t *m = PyObject_NEW(pyopencv_${name}_t, &pyopencv_${name}_Type); |
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new (&(m->v)) Ptr<$cname1>(); // init Ptr with placement new |
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m->v = r; |
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return (PyObject*)m; |
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} |
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template<> bool pyopencv_to(PyObject* src, Ptr<${cname}>& dst, const char* name) |
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{ |
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if( src == NULL || src == Py_None ) |
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return true; |
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if(!PyObject_TypeCheck(src, &pyopencv_${name}_Type)) |
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{ |
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failmsg("Expected ${cname} for argument '%%s'", name); |
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return false; |
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} |
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dst = ((pyopencv_${name}_t*)src)->v.dynamicCast<${cname}>(); |
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return true; |
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} |
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""" % head_init_str) |
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gen_template_map_type_cvt = Template(""" |
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template<> bool pyopencv_to(PyObject* src, ${cname}& dst, const char* name); |
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""") |
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gen_template_set_prop_from_map = Template(""" |
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if( PyMapping_HasKeyString(src, (char*)"$propname") ) |
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{ |
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tmp = PyMapping_GetItemString(src, (char*)"$propname"); |
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ok = tmp && pyopencv_to(tmp, dst.$propname); |
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Py_DECREF(tmp); |
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if(!ok) return false; |
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}""") |
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gen_template_type_impl = Template(""" |
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static PyObject* pyopencv_${name}_repr(PyObject* self) |
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{ |
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char str[1000]; |
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sprintf(str, "<$wname %p>", self); |
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return PyString_FromString(str); |
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} |
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${getset_code} |
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static PyGetSetDef pyopencv_${name}_getseters[] = |
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{${getset_inits} |
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{NULL} /* Sentinel */ |
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}; |
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${methods_code} |
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static PyMethodDef pyopencv_${name}_methods[] = |
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{ |
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${methods_inits} |
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{NULL, NULL} |
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}; |
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static void pyopencv_${name}_specials(void) |
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{ |
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pyopencv_${name}_Type.tp_base = ${baseptr}; |
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pyopencv_${name}_Type.tp_dealloc = pyopencv_${name}_dealloc; |
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pyopencv_${name}_Type.tp_repr = pyopencv_${name}_repr; |
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pyopencv_${name}_Type.tp_getset = pyopencv_${name}_getseters; |
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pyopencv_${name}_Type.tp_methods = pyopencv_${name}_methods;${extra_specials} |
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} |
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""") |
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gen_template_get_prop = Template(""" |
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static PyObject* pyopencv_${name}_get_${member}(pyopencv_${name}_t* p, void *closure) |
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{ |
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return pyopencv_from(p->v${access}${member}); |
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} |
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""") |
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gen_template_get_prop_algo = Template(""" |
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static PyObject* pyopencv_${name}_get_${member}(pyopencv_${name}_t* p, void *closure) |
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{ |
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return pyopencv_from(dynamic_cast<$cname*>(p->v.get())${access}${member}); |
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} |
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""") |
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gen_template_set_prop = Template(""" |
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static int pyopencv_${name}_set_${member}(pyopencv_${name}_t* p, PyObject *value, void *closure) |
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{ |
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if (value == NULL) |
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{ |
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PyErr_SetString(PyExc_TypeError, "Cannot delete the ${member} attribute"); |
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return -1; |
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} |
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return pyopencv_to(value, p->v${access}${member}) ? 0 : -1; |
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} |
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""") |
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gen_template_set_prop_algo = Template(""" |
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static int pyopencv_${name}_set_${member}(pyopencv_${name}_t* p, PyObject *value, void *closure) |
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{ |
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if (value == NULL) |
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{ |
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PyErr_SetString(PyExc_TypeError, "Cannot delete the ${member} attribute"); |
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return -1; |
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} |
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return pyopencv_to(value, dynamic_cast<$cname*>(p->v.get())${access}${member}) ? 0 : -1; |
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} |
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""") |
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gen_template_prop_init = Template(""" |
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{(char*)"${member}", (getter)pyopencv_${name}_get_${member}, NULL, (char*)"${member}", NULL},""") |
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gen_template_rw_prop_init = Template(""" |
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{(char*)"${member}", (getter)pyopencv_${name}_get_${member}, (setter)pyopencv_${name}_set_${member}, (char*)"${member}", NULL},""") |
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simple_argtype_mapping = { |
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"bool": ("bool", "b", "0"), |
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"int": ("int", "i", "0"), |
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"float": ("float", "f", "0.f"), |
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"double": ("double", "d", "0"), |
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"c_string": ("char*", "s", '(char*)""') |
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} |
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def normalize_class_name(name): |
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return re.sub(r"^cv\.", "", name).replace(".", "_") |
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class ClassProp(object): |
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def __init__(self, decl): |
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self.tp = decl[0].replace("*", "_ptr") |
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self.name = decl[1] |
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self.readonly = True |
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if "/RW" in decl[3]: |
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self.readonly = False |
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class ClassInfo(object): |
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def __init__(self, name, decl=None): |
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self.cname = name.replace(".", "::") |
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self.name = self.wname = normalize_class_name(name) |
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self.ismap = False |
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self.issimple = False |
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self.isalgorithm = False |
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self.methods = {} |
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self.props = [] |
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self.consts = {} |
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customname = False |
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if decl: |
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self.bases = decl[1].split()[1:] |
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if len(self.bases) > 1: |
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print("Note: Class %s has more than 1 base class (not supported by Python C extensions)" % (self.name,)) |
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print(" Bases: ", " ".join(self.bases)) |
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print(" Only the first base class will be used") |
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self.bases = [self.bases[0].strip(",")] |
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#return sys.exit(-1) |
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if self.bases and self.bases[0].startswith("cv::"): |
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self.bases[0] = self.bases[0][4:] |
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if self.bases and self.bases[0] == "Algorithm": |
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self.isalgorithm = True |
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for m in decl[2]: |
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if m.startswith("="): |
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self.wname = m[1:] |
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customname = True |
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elif m == "/Map": |
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self.ismap = True |
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elif m == "/Simple": |
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self.issimple = True |
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self.props = [ClassProp(p) for p in decl[3]] |
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if not customname and self.wname.startswith("Cv"): |
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self.wname = self.wname[2:] |
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def gen_map_code(self, all_classes): |
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code = "static bool pyopencv_to(PyObject* src, %s& dst, const char* name)\n{\n PyObject* tmp;\n bool ok;\n" % (self.cname) |
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code += "".join([gen_template_set_prop_from_map.substitute(propname=p.name,proptype=p.tp) for p in self.props]) |
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if self.bases: |
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code += "\n return pyopencv_to(src, (%s&)dst, name);\n}\n" % all_classes[self.bases[0].replace("::", "_")].cname |
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else: |
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code += "\n return true;\n}\n" |
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return code |
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def gen_code(self, all_classes): |
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if self.ismap: |
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return self.gen_map_code(all_classes) |
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getset_code = StringIO() |
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getset_inits = StringIO() |
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sorted_props = [(p.name, p) for p in self.props] |
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sorted_props.sort() |
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access_op = "->" |
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if self.issimple: |
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access_op = "." |
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for pname, p in sorted_props: |
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if self.isalgorithm: |
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getset_code.write(gen_template_get_prop_algo.substitute(name=self.name, cname=self.cname, member=pname, membertype=p.tp, access=access_op)) |
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else: |
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getset_code.write(gen_template_get_prop.substitute(name=self.name, member=pname, membertype=p.tp, access=access_op)) |
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if p.readonly: |
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getset_inits.write(gen_template_prop_init.substitute(name=self.name, member=pname)) |
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else: |
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if self.isalgorithm: |
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getset_code.write(gen_template_set_prop_algo.substitute(name=self.name, cname=self.cname, member=pname, membertype=p.tp, access=access_op)) |
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else: |
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getset_code.write(gen_template_set_prop.substitute(name=self.name, member=pname, membertype=p.tp, access=access_op)) |
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getset_inits.write(gen_template_rw_prop_init.substitute(name=self.name, member=pname)) |
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methods_code = StringIO() |
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methods_inits = StringIO() |
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sorted_methods = list(self.methods.items()) |
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sorted_methods.sort() |
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for mname, m in sorted_methods: |
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methods_code.write(m.gen_code(all_classes)) |
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methods_inits.write(m.get_tab_entry()) |
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baseptr = "NULL" |
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if self.bases and self.bases[0] in all_classes: |
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baseptr = "&pyopencv_" + all_classes[self.bases[0]].name + "_Type" |
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code = gen_template_type_impl.substitute(name=self.name, wname=self.wname, cname=self.cname, |
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getset_code=getset_code.getvalue(), getset_inits=getset_inits.getvalue(), |
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methods_code=methods_code.getvalue(), methods_inits=methods_inits.getvalue(), |
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baseptr=baseptr, extra_specials="") |
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return code |
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def handle_ptr(tp): |
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if tp.startswith('Ptr_'): |
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tp = 'Ptr<' + "::".join(tp.split('_')[1:]) + '>' |
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return tp |
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class ArgInfo(object): |
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def __init__(self, arg_tuple): |
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self.tp = handle_ptr(arg_tuple[0]) |
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self.name = arg_tuple[1] |
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self.defval = arg_tuple[2] |
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self.isarray = False |
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self.arraylen = 0 |
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self.arraycvt = None |
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self.inputarg = True |
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self.outputarg = False |
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self.returnarg = False |
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for m in arg_tuple[3]: |
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if m == "/O": |
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self.inputarg = False |
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self.outputarg = True |
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self.returnarg = True |
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elif m == "/IO": |
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self.inputarg = True |
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self.outputarg = True |
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self.returnarg = True |
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elif m.startswith("/A"): |
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self.isarray = True |
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self.arraylen = m[2:].strip() |
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elif m.startswith("/CA"): |
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self.isarray = True |
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self.arraycvt = m[2:].strip() |
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self.py_inputarg = False |
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self.py_outputarg = False |
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def isbig(self): |
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return self.tp == "Mat" or self.tp == "vector_Mat"# or self.tp.startswith("vector") |
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def crepr(self): |
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return "ArgInfo(\"%s\", %d)" % (self.name, self.outputarg) |
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class FuncVariant(object): |
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def __init__(self, classname, name, decl, isconstructor): |
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self.classname = classname |
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self.name = self.wname = name |
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self.isconstructor = isconstructor |
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self.rettype = handle_ptr(decl[1]) |
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if self.rettype == "void": |
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self.rettype = "" |
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self.args = [] |
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self.array_counters = {} |
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for a in decl[3]: |
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ainfo = ArgInfo(a) |
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if ainfo.isarray and not ainfo.arraycvt: |
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c = ainfo.arraylen |
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c_arrlist = self.array_counters.get(c, []) |
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if c_arrlist: |
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c_arrlist.append(ainfo.name) |
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else: |
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self.array_counters[c] = [ainfo.name] |
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self.args.append(ainfo) |
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self.init_pyproto() |
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def init_pyproto(self): |
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# string representation of argument list, with '[', ']' symbols denoting optional arguments, e.g. |
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# "src1, src2[, dst[, mask]]" for cv.add |
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argstr = "" |
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# list of all input arguments of the Python function, with the argument numbers: |
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# [("src1", 0), ("src2", 1), ("dst", 2), ("mask", 3)] |
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# we keep an argument number to find the respective argument quickly, because |
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# some of the arguments of C function may not present in the Python function (such as array counters) |
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# or even go in a different order ("heavy" output parameters of the C function |
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# become the first optional input parameters of the Python function, and thus they are placed right after |
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# non-optional input parameters) |
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arglist = [] |
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|
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# the list of "heavy" output parameters. Heavy parameters are the parameters |
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# that can be expensive to allocate each time, such as vectors and matrices (see isbig). |
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outarr_list = [] |
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# the list of output parameters. Also includes input/output parameters. |
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outlist = [] |
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firstoptarg = 1000000 |
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argno = -1 |
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for a in self.args: |
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argno += 1 |
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if a.name in self.array_counters: |
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continue |
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if a.tp in ignored_arg_types: |
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continue |
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if a.returnarg: |
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outlist.append((a.name, argno)) |
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if (not a.inputarg) and a.isbig(): |
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outarr_list.append((a.name, argno)) |
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continue |
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if not a.inputarg: |
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continue |
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if not a.defval: |
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arglist.append((a.name, argno)) |
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else: |
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firstoptarg = min(firstoptarg, len(arglist)) |
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# if there are some array output parameters before the first default parameter, they |
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# are added as optional parameters before the first optional parameter |
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if outarr_list: |
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arglist += outarr_list |
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outarr_list = [] |
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arglist.append((a.name, argno)) |
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|
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if outarr_list: |
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firstoptarg = min(firstoptarg, len(arglist)) |
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arglist += outarr_list |
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firstoptarg = min(firstoptarg, len(arglist)) |
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noptargs = len(arglist) - firstoptarg |
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argnamelist = [aname for aname, argno in arglist] |
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argstr = ", ".join(argnamelist[:firstoptarg]) |
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argstr = "[, ".join([argstr] + argnamelist[firstoptarg:]) |
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argstr += "]" * noptargs |
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if self.rettype: |
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outlist = [("retval", -1)] + outlist |
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elif self.isconstructor: |
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assert outlist == [] |
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outlist = [("self", -1)] |
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if self.isconstructor: |
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classname = self.classname |
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if classname.startswith("Cv"): |
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classname=classname[2:] |
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outstr = "<%s object>" % (classname,) |
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elif outlist: |
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outstr = ", ".join([o[0] for o in outlist]) |
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else: |
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outstr = "None" |
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|
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self.py_docstring = "%s(%s) -> %s" % (self.wname, argstr, outstr) |
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self.py_noptargs = noptargs |
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self.py_arglist = arglist |
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for aname, argno in arglist: |
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self.args[argno].py_inputarg = True |
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for aname, argno in outlist: |
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if argno >= 0: |
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self.args[argno].py_outputarg = True |
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self.py_outlist = outlist |
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|
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class FuncInfo(object): |
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def __init__(self, classname, name, cname, isconstructor, namespace): |
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self.classname = classname |
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self.name = name |
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self.cname = cname |
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self.isconstructor = isconstructor |
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self.namespace = namespace |
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self.variants = [] |
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|
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def add_variant(self, decl): |
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self.variants.append(FuncVariant(self.classname, self.name, decl, self.isconstructor)) |
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|
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def get_wrapper_name(self): |
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name = self.name |
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if self.classname: |
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classname = self.classname + "_" |
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if "[" in name: |
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name = "getelem" |
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else: |
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classname = "" |
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return "pyopencv_" + self.namespace.replace('.','_') + '_' + classname + name |
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|
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def get_wrapper_prototype(self): |
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full_fname = self.get_wrapper_name() |
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if self.classname and not self.isconstructor: |
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self_arg = "self" |
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else: |
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self_arg = "" |
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return "static PyObject* %s(PyObject* %s, PyObject* args, PyObject* kw)" % (full_fname, self_arg) |
|
|
|
def get_tab_entry(self): |
|
docstring_list = [] |
|
have_empty_constructor = False |
|
for v in self.variants: |
|
s = v.py_docstring |
|
if (not v.py_arglist) and self.isconstructor: |
|
have_empty_constructor = True |
|
if s not in docstring_list: |
|
docstring_list.append(s) |
|
# if there are just 2 constructors: default one and some other, |
|
# we simplify the notation. |
|
# Instead of ClassName(args ...) -> object or ClassName() -> object |
|
# we write ClassName([args ...]) -> object |
|
if have_empty_constructor and len(self.variants) == 2: |
|
idx = self.variants[1].py_arglist != [] |
|
s = self.variants[idx].py_docstring |
|
p1 = s.find("(") |
|
p2 = s.rfind(")") |
|
docstring_list = [s[:p1+1] + "[" + s[p1+1:p2] + "]" + s[p2:]] |
|
|
|
return Template(' {"$py_funcname", (PyCFunction)$wrap_funcname, METH_VARARGS | METH_KEYWORDS, "$py_docstring"},\n' |
|
).substitute(py_funcname = self.variants[0].wname, wrap_funcname=self.get_wrapper_name(), |
|
py_docstring = " or ".join(docstring_list)) |
|
|
|
def gen_code(self, all_classes): |
|
proto = self.get_wrapper_prototype() |
|
code = "%s\n{\n" % (proto,) |
|
code += " using namespace %s;\n\n" % self.namespace.replace('.', '::') |
|
|
|
selfinfo = ClassInfo("") |
|
ismethod = self.classname != "" and not self.isconstructor |
|
# full name is needed for error diagnostic in PyArg_ParseTupleAndKeywords |
|
fullname = self.name |
|
|
|
if self.classname: |
|
selfinfo = all_classes[self.classname] |
|
if not self.isconstructor: |
|
amp = "&" if selfinfo.issimple else "" |
|
if selfinfo.isalgorithm: |
|
code += gen_template_check_self_algo.substitute(name=selfinfo.name, cname=selfinfo.cname, amp=amp) |
|
else: |
|
get = "" if selfinfo.issimple else ".get()" |
|
code += gen_template_check_self.substitute(name=selfinfo.name, cname=selfinfo.cname, amp=amp, get=get) |
|
fullname = selfinfo.wname + "." + fullname |
|
|
|
all_code_variants = [] |
|
declno = -1 |
|
for v in self.variants: |
|
code_decl = "" |
|
code_ret = "" |
|
code_cvt_list = [] |
|
|
|
code_args = "(" |
|
all_cargs = [] |
|
parse_arglist = [] |
|
|
|
# declare all the C function arguments, |
|
# add necessary conversions from Python objects to code_cvt_list, |
|
# form the function/method call, |
|
# for the list of type mappings |
|
for a in v.args: |
|
if a.tp in ignored_arg_types: |
|
defval = a.defval |
|
if not defval and a.tp.endswith("*"): |
|
defval = 0 |
|
assert defval |
|
if not code_args.endswith("("): |
|
code_args += ", " |
|
code_args += defval |
|
all_cargs.append([[None, ""], ""]) |
|
continue |
|
tp1 = tp = a.tp |
|
amp = "" |
|
defval0 = "" |
|
if tp.endswith("*"): |
|
tp = tp1 = tp[:-1] |
|
amp = "&" |
|
if tp.endswith("*"): |
|
defval0 = "0" |
|
tp1 = tp.replace("*", "_ptr") |
|
if tp1.endswith("*"): |
|
print("Error: type with star: a.tp=%s, tp=%s, tp1=%s" % (a.tp, tp, tp1)) |
|
sys.exit(-1) |
|
|
|
amapping = simple_argtype_mapping.get(tp, (tp, "O", defval0)) |
|
parse_name = a.name |
|
if a.py_inputarg: |
|
if amapping[1] == "O": |
|
code_decl += " PyObject* pyobj_%s = NULL;\n" % (a.name,) |
|
parse_name = "pyobj_" + a.name |
|
if a.tp == 'char': |
|
code_cvt_list.append("convert_to_char(pyobj_%s, &%s, %s)"% (a.name, a.name, a.crepr())) |
|
else: |
|
code_cvt_list.append("pyopencv_to(pyobj_%s, %s, %s)" % (a.name, a.name, a.crepr())) |
|
|
|
all_cargs.append([amapping, parse_name]) |
|
|
|
defval = a.defval |
|
if not defval: |
|
defval = amapping[2] |
|
# "tp arg = tp();" is equivalent to "tp arg;" in the case of complex types |
|
if defval == tp + "()" and amapping[1] == "O": |
|
defval = "" |
|
if a.outputarg and not a.inputarg: |
|
defval = "" |
|
if defval: |
|
code_decl += " %s %s=%s;\n" % (amapping[0], a.name, defval) |
|
else: |
|
code_decl += " %s %s;\n" % (amapping[0], a.name) |
|
|
|
if not code_args.endswith("("): |
|
code_args += ", " |
|
code_args += amp + a.name |
|
|
|
code_args += ")" |
|
|
|
if self.isconstructor: |
|
code_decl += " pyopencv_%s_t* self = 0;\n" % selfinfo.name |
|
if selfinfo.issimple: |
|
templ_prelude = gen_template_simple_call_constructor_prelude |
|
templ = gen_template_simple_call_constructor |
|
else: |
|
templ_prelude = gen_template_call_constructor_prelude |
|
templ = gen_template_call_constructor |
|
|
|
code_prelude = templ_prelude.substitute(name=selfinfo.name, cname=selfinfo.cname) |
|
code_fcall = templ.substitute(name=selfinfo.name, cname=selfinfo.cname, args=code_args) |
|
else: |
|
code_prelude = "" |
|
code_fcall = "" |
|
if v.rettype: |
|
code_decl += " " + v.rettype + " retval;\n" |
|
code_fcall += "retval = " |
|
if ismethod: |
|
code_fcall += "_self_->" + self.cname |
|
else: |
|
code_fcall += self.cname |
|
code_fcall += code_args |
|
|
|
if code_cvt_list: |
|
code_cvt_list = [""] + code_cvt_list |
|
|
|
# add info about return value, if any, to all_cargs. if there non-void return value, |
|
# it is encoded in v.py_outlist as ("retval", -1) pair. |
|
# As [-1] in Python accesses the last element of a list, we automatically handle the return value by |
|
# adding the necessary info to the end of all_cargs list. |
|
if v.rettype: |
|
tp = v.rettype |
|
tp1 = tp.replace("*", "_ptr") |
|
amapping = simple_argtype_mapping.get(tp, (tp, "O", "0")) |
|
all_cargs.append(amapping) |
|
|
|
if v.args and v.py_arglist: |
|
# form the format spec for PyArg_ParseTupleAndKeywords |
|
fmtspec = "".join([all_cargs[argno][0][1] for aname, argno in v.py_arglist]) |
|
if v.py_noptargs > 0: |
|
fmtspec = fmtspec[:-v.py_noptargs] + "|" + fmtspec[-v.py_noptargs:] |
|
fmtspec += ":" + fullname |
|
|
|
# form the argument parse code that: |
|
# - declares the list of keyword parameters |
|
# - calls PyArg_ParseTupleAndKeywords |
|
# - converts complex arguments from PyObject's to native OpenCV types |
|
code_parse = gen_template_parse_args.substitute( |
|
kw_list = ", ".join(['"' + aname + '"' for aname, argno in v.py_arglist]), |
|
fmtspec = fmtspec, |
|
parse_arglist = ", ".join(["&" + all_cargs[argno][1] for aname, argno in v.py_arglist]), |
|
code_cvt = " &&\n ".join(code_cvt_list)) |
|
else: |
|
code_parse = "if(PyObject_Size(args) == 0 && (kw == NULL || PyObject_Size(kw) == 0))" |
|
|
|
if len(v.py_outlist) == 0: |
|
code_ret = "Py_RETURN_NONE" |
|
elif len(v.py_outlist) == 1: |
|
if self.isconstructor: |
|
code_ret = "return (PyObject*)self" |
|
else: |
|
aname, argno = v.py_outlist[0] |
|
code_ret = "return pyopencv_from(%s)" % (aname,) |
|
else: |
|
# ther is more than 1 return parameter; form the tuple out of them |
|
fmtspec = "N"*len(v.py_outlist) |
|
backcvt_arg_list = [] |
|
for aname, argno in v.py_outlist: |
|
amapping = all_cargs[argno][0] |
|
backcvt_arg_list.append("%s(%s)" % (amapping[2], aname)) |
|
code_ret = "return Py_BuildValue(\"(%s)\", %s)" % \ |
|
(fmtspec, ", ".join(["pyopencv_from(" + aname + ")" for aname, argno in v.py_outlist])) |
|
|
|
all_code_variants.append(gen_template_func_body.substitute(code_decl=code_decl, |
|
code_parse=code_parse, code_prelude=code_prelude, code_fcall=code_fcall, code_ret=code_ret)) |
|
|
|
if len(all_code_variants)==1: |
|
# if the function/method has only 1 signature, then just put it |
|
code += all_code_variants[0] |
|
else: |
|
# try to execute each signature |
|
code += " PyErr_Clear();\n\n".join([" {\n" + v + " }\n" for v in all_code_variants]) |
|
code += "\n return NULL;\n}\n\n" |
|
return code |
|
|
|
|
|
class Namespace(object): |
|
def __init__(self): |
|
self.funcs = {} |
|
self.consts = {} |
|
|
|
|
|
class PythonWrapperGenerator(object): |
|
def __init__(self): |
|
self.clear() |
|
|
|
def clear(self): |
|
self.classes = {} |
|
self.namespaces = {} |
|
self.consts = {} |
|
self.code_include = StringIO() |
|
self.code_types = StringIO() |
|
self.code_funcs = StringIO() |
|
self.code_type_reg = StringIO() |
|
self.code_ns_reg = StringIO() |
|
self.class_idx = 0 |
|
|
|
def add_class(self, stype, name, decl): |
|
classinfo = ClassInfo(name, decl) |
|
classinfo.decl_idx = self.class_idx |
|
self.class_idx += 1 |
|
|
|
if classinfo.name in self.classes: |
|
print("Generator error: class %s (cname=%s) already exists" \ |
|
% (classinfo.name, classinfo.cname)) |
|
sys.exit(-1) |
|
self.classes[classinfo.name] = classinfo |
|
|
|
if classinfo.bases: |
|
chunks = classinfo.bases[0].split('::') |
|
base = '_'.join(chunks) |
|
while base not in self.classes and len(chunks)>1: |
|
del chunks[-2] |
|
base = '_'.join(chunks) |
|
if base not in self.classes: |
|
print("Generator error: unable to resolve base %s for %s" |
|
% (classinfo.bases[0], classinfo.name)) |
|
sys.exit(-1) |
|
classinfo.bases[0] = "::".join(chunks) |
|
classinfo.isalgorithm |= self.classes[base].isalgorithm |
|
|
|
def split_decl_name(self, name): |
|
chunks = name.split('.') |
|
namespace = chunks[:-1] |
|
classes = [] |
|
while namespace and '.'.join(namespace) not in self.parser.namespaces: |
|
classes.insert(0, namespace.pop()) |
|
return namespace, classes, chunks[-1] |
|
|
|
|
|
def add_const(self, name, decl): |
|
cname = name.replace('.','::') |
|
namespace, classes, name = self.split_decl_name(name) |
|
namespace = '.'.join(namespace) |
|
name = '_'.join(classes+[name]) |
|
ns = self.namespaces.setdefault(namespace, Namespace()) |
|
if name in ns.consts: |
|
print("Generator error: constant %s (cname=%s) already exists" \ |
|
% (name, cname)) |
|
sys.exit(-1) |
|
ns.consts[name] = cname |
|
|
|
def add_func(self, decl): |
|
namespace, classes, barename = self.split_decl_name(decl[0]) |
|
cname = "::".join(namespace+classes+[barename]) |
|
name = barename |
|
classname = '' |
|
bareclassname = '' |
|
if classes: |
|
classname = normalize_class_name('.'.join(namespace+classes)) |
|
bareclassname = classes[-1] |
|
namespace = '.'.join(namespace) |
|
|
|
isconstructor = name == bareclassname |
|
isclassmethod = False |
|
for m in decl[2]: |
|
if m == "/S": |
|
isclassmethod = True |
|
elif m.startswith("="): |
|
name = m[1:] |
|
if isclassmethod: |
|
name = "_".join(classes+[name]) |
|
classname = '' |
|
elif isconstructor: |
|
name = "_".join(classes[:-1]+[name]) |
|
|
|
if classname and not isconstructor: |
|
cname = barename |
|
func_map = self.classes[classname].methods |
|
else: |
|
func_map = self.namespaces.setdefault(namespace, Namespace()).funcs |
|
|
|
func = func_map.setdefault(name, FuncInfo(classname, name, cname, isconstructor, namespace)) |
|
func.add_variant(decl) |
|
|
|
|
|
def gen_namespace(self, ns_name): |
|
ns = self.namespaces[ns_name] |
|
wname = normalize_class_name(ns_name) |
|
|
|
self.code_ns_reg.write('static PyMethodDef methods_%s[] = {\n'%wname) |
|
for name, func in sorted(ns.funcs.items()): |
|
self.code_ns_reg.write(func.get_tab_entry()) |
|
self.code_ns_reg.write(' {NULL, NULL}\n};\n\n') |
|
|
|
self.code_ns_reg.write('static ConstDef consts_%s[] = {\n'%wname) |
|
for name, cname in sorted(ns.consts.items()): |
|
self.code_ns_reg.write(' {"%s", %s},\n'%(name, cname)) |
|
compat_name = re.sub(r"([a-z])([A-Z])", r"\1_\2", name).upper() |
|
if name != compat_name: |
|
self.code_ns_reg.write(' {"%s", %s},\n'%(compat_name, cname)) |
|
self.code_ns_reg.write(' {NULL, 0}\n};\n\n') |
|
|
|
def gen_namespaces_reg(self): |
|
self.code_ns_reg.write('static void init_submodules(PyObject * root) \n{\n') |
|
for ns_name in sorted(self.namespaces): |
|
if ns_name.split('.')[0] == 'cv': |
|
wname = normalize_class_name(ns_name) |
|
self.code_ns_reg.write(' init_submodule(root, MODULESTR"%s", methods_%s, consts_%s);\n' % (ns_name[2:], wname, wname)) |
|
self.code_ns_reg.write('};\n') |
|
|
|
|
|
def save(self, path, name, buf): |
|
f = open(path + "/" + name, "wt") |
|
f.write(buf.getvalue()) |
|
f.close() |
|
|
|
def gen(self, srcfiles, output_path): |
|
self.clear() |
|
self.parser = hdr_parser.CppHeaderParser() |
|
|
|
# step 1: scan the headers and build more descriptive maps of classes, consts, functions |
|
for hdr in srcfiles: |
|
decls = self.parser.parse(hdr) |
|
if len(decls) == 0: |
|
continue |
|
self.code_include.write( '#include "{}"\n'.format(hdr[hdr.rindex('opencv2/'):]) ) |
|
for decl in decls: |
|
name = decl[0] |
|
if name.startswith("struct") or name.startswith("class"): |
|
# class/struct |
|
p = name.find(" ") |
|
stype = name[:p] |
|
name = name[p+1:].strip() |
|
self.add_class(stype, name, decl) |
|
elif name.startswith("const"): |
|
# constant |
|
self.add_const(name.replace("const ", "").strip(), decl) |
|
else: |
|
# function |
|
self.add_func(decl) |
|
|
|
# step 2: generate code for the classes and their methods |
|
classlist = list(self.classes.items()) |
|
classlist.sort() |
|
for name, classinfo in classlist: |
|
if classinfo.ismap: |
|
self.code_types.write(gen_template_map_type_cvt.substitute(name=name, cname=classinfo.cname)) |
|
else: |
|
if classinfo.issimple: |
|
templ = gen_template_simple_type_decl |
|
else: |
|
templ = gen_template_type_decl |
|
self.code_types.write(templ.substitute(name=name, wname=classinfo.wname, cname=classinfo.cname, |
|
cname1=("cv::Algorithm" if classinfo.isalgorithm else classinfo.cname))) |
|
|
|
# register classes in the same order as they have been declared. |
|
# this way, base classes will be registered in Python before their derivatives. |
|
classlist1 = [(classinfo.decl_idx, name, classinfo) for name, classinfo in classlist] |
|
classlist1.sort() |
|
|
|
for decl_idx, name, classinfo in classlist1: |
|
code = classinfo.gen_code(self.classes) |
|
self.code_types.write(code) |
|
if not classinfo.ismap: |
|
self.code_type_reg.write("MKTYPE2(%s);\n" % (classinfo.name,) ) |
|
|
|
# step 3: generate the code for all the global functions |
|
for ns_name, ns in sorted(self.namespaces.items()): |
|
if ns_name.split('.')[0] != 'cv': |
|
continue |
|
for name, func in sorted(ns.funcs.items()): |
|
code = func.gen_code(self.classes) |
|
self.code_funcs.write(code) |
|
self.gen_namespace(ns_name) |
|
self.gen_namespaces_reg() |
|
|
|
# step 4: generate the code for constants |
|
constlist = list(self.consts.items()) |
|
constlist.sort() |
|
for name, constinfo in constlist: |
|
self.gen_const_reg(constinfo) |
|
|
|
# That's it. Now save all the files |
|
self.save(output_path, "pyopencv_generated_include.h", self.code_include) |
|
self.save(output_path, "pyopencv_generated_funcs.h", self.code_funcs) |
|
self.save(output_path, "pyopencv_generated_types.h", self.code_types) |
|
self.save(output_path, "pyopencv_generated_type_reg.h", self.code_type_reg) |
|
self.save(output_path, "pyopencv_generated_ns_reg.h", self.code_ns_reg) |
|
|
|
if __name__ == "__main__": |
|
srcfiles = hdr_parser.opencv_hdr_list |
|
dstdir = "/Users/vp/tmp" |
|
if len(sys.argv) > 1: |
|
dstdir = sys.argv[1] |
|
if len(sys.argv) > 2: |
|
srcfiles = open(sys.argv[2], 'r').read().split(';') |
|
generator = PythonWrapperGenerator() |
|
generator.gen(srcfiles, dstdir)
|
|
|