ref: 2111793ec1b8ebbac6367d17ee7a3865b062dbef
dir: /python/lib/gen_code.py/
aubiodefvalue = {
# we have some clean up to do
'buf_size': 'Py_default_vector_length',
'win_s': 'Py_default_vector_length',
# and here too
'hop_size': 'Py_default_vector_length / 2',
'hop_s': 'Py_default_vector_length / 2',
# these should be alright
'samplerate': 'Py_aubio_default_samplerate',
# now for the non obvious ones
'n_filters': '40',
'n_coeffs': '13',
'nelems': '10',
'flow': '0.',
'fhig': '1.',
'ilow': '0.',
'ihig': '1.',
'thrs': '0.5',
'ratio': '0.5',
'method': '"default"',
'uri': '"none"',
}
member_types = {
'name': 'type',
'char_t*': 'T_STRING',
'uint_t': 'T_INT',
'smpl_t': 'AUBIO_NPY_SMPL',
}
pyfromtype_fn = {
'smpl_t': 'PyFloat_FromDouble',
'uint_t': 'PyLong_FromLong', # was: 'PyInt_FromLong',
'fvec_t*': 'PyAubio_CFvecToArray',
'fmat_t*': 'PyAubio_CFmatToArray',
}
pytoaubio_fn = {
'fvec_t*': 'PyAubio_ArrayToCFvec',
'cvec_t*': 'PyAubio_PyCvecToCCvec',
#'fmat_t*': 'PyAubio_ArrayToCFmat',
}
newfromtype_fn = {
'fvec_t*': 'new_py_fvec',
'fmat_t*': 'new_py_fmat',
'cvec_t*': 'new_py_cvec',
}
delfromtype_fn = {
'fvec_t*': 'Py_DECREF',
'fmat_t*': 'Py_DECREF',
'cvec_t*': 'Py_DECREF',
}
param_init = {
'char_t*': 'NULL',
'uint_t': '0',
'sint_t': 0,
'smpl_t': 0.,
'lsmp_t': 0.,
}
pyargparse_chars = {
'smpl_t': 'f', # if not usedouble else 'd',
'uint_t': 'I',
'sint_t': 'I',
'char_t*': 's',
'fmat_t*': 'O',
'fvec_t*': 'O',
'cvec_t*': 'O',
}
objoutsize = {
'onset': '1',
'pitch': '1',
'notes': '3',
'wavetable': 'self->hop_size',
'sampler': 'self->hop_size',
'mfcc': 'self->n_coeffs',
'specdesc': '1',
'tempo': '1',
'filterbank': 'self->n_filters',
'tss': 'self->buf_size',
}
objinputsize = {
'mfcc': 'self->buf_size / 2 + 1',
'notes': 'self->hop_size',
'onset': 'self->hop_size',
'pitch': 'self->hop_size',
'sampler': 'self->hop_size',
'specdesc': 'self->buf_size / 2 + 1',
'tempo': 'self->hop_size',
'wavetable': 'self->hop_size',
'tss': 'self->buf_size / 2 + 1',
}
def get_name(proto):
name = proto.replace(' *', '* ').split()[1].split('(')[0]
name = name.replace('*','')
if name == '': raise ValueError(proto + "gave empty name")
return name
def get_return_type(proto):
import re
paramregex = re.compile('(\w+ ?\*?).*')
outputs = paramregex.findall(proto)
assert len(outputs) == 1
return outputs[0].replace(' ', '')
def split_type(arg):
""" arg = 'foo *name'
return ['foo*', 'name'] """
l = arg.split()
type_arg = {} #'type': l[0], 'name': l[1]}
type_arg['type'] = " ".join(l[:-1])
type_arg['name'] = l[-1]
# fix up type / name
if type_arg['name'].startswith('*'):
# ['foo', '*name'] -> ['foo*', 'name']
type_arg['type'] += '*'
type_arg['name'] = type_arg['name'][1:]
if type_arg['type'].endswith(' *'):
# ['foo *', 'name'] -> ['foo*', 'name']
type_arg['type'] = type_arg['type'].replace(' *','*')
if type_arg['type'].startswith('const '):
# ['foo *', 'name'] -> ['foo*', 'name']
type_arg['type'] = type_arg['type'].replace('const ','')
return type_arg
def get_params(proto):
""" get the list of parameters from a function prototype
example: proto = "int main (int argc, char ** argv)"
returns: ['int argc', 'char ** argv']
"""
import re
paramregex = re.compile('.*\((.*)\);')
a = paramregex.findall(proto)[0].split(', ')
#a = [i.replace('const ', '') for i in a]
return a
def get_input_params(proto):
a = get_params(proto)
return [i.replace('const ', '') for i in a if (i.startswith('const ') or i.startswith('uint_t ') or i.startswith('smpl_t '))]
def get_output_params(proto):
a = get_params(proto)
return [i for i in a if not i.startswith('const ')][1:]
def get_params_types_names(proto):
""" get the list of parameters from a function prototype
example: proto = "int main (int argc, char ** argv)"
returns: [['int', 'argc'], ['char **','argv']]
"""
a = list(map(split_type, get_params(proto)))
#print proto, a
#import sys; sys.exit(1)
return a
class MappedObject(object):
def __init__(self, prototypes, usedouble = False):
if usedouble:
pyargparse_chars['smpl_t'] = 'd'
self.prototypes = prototypes
self.shortname = prototypes['shortname']
self.longname = prototypes['longname']
self.new_proto = prototypes['new'][0]
self.del_proto = prototypes['del'][0]
self.do_proto = prototypes['do'][0]
self.input_params = get_params_types_names(self.new_proto)
self.input_params_list = "; ".join(get_input_params(self.new_proto))
self.outputs = get_params_types_names(self.do_proto)[2:]
self.do_inputs = [get_params_types_names(self.do_proto)[1]]
self.do_outputs = get_params_types_names(self.do_proto)[2:]
struct_output_str = ["PyObject *{0[name]}; {1} c_{0[name]}".format(i, i['type'][:-1]) for i in self.do_outputs]
self.struct_outputs = ";\n ".join(struct_output_str)
#print ("input_params: ", map(split_type, get_input_params(self.do_proto)))
#print ("output_params", map(split_type, get_output_params(self.do_proto)))
def gen_code(self):
out = ""
try:
out += self.gen_struct()
out += self.gen_doc()
out += self.gen_new()
out += self.gen_init()
out += self.gen_del()
out += self.gen_do()
out += self.gen_memberdef()
out += self.gen_set()
out += self.gen_get()
out += self.gen_methodef()
out += self.gen_typeobject()
except Exception as e:
print ("Failed generating code for", self.shortname)
raise
return out
def gen_struct(self):
out = """
// {shortname} structure
typedef struct{{
PyObject_HEAD
// pointer to aubio object
{longname} *o;
// input parameters
{input_params_list};
// do input vectors
{do_inputs_list};
// output results
{struct_outputs};
}} Py_{shortname};
"""
# fmat_t* / fvec_t* / cvec_t* inputs -> full fvec_t /.. struct in Py_{shortname}
do_inputs_list = "; ".join(get_input_params(self.do_proto)).replace('fvec_t *','fvec_t').replace('fmat_t *', 'fmat_t').replace('cvec_t *', 'cvec_t')
return out.format(do_inputs_list = do_inputs_list, **self.__dict__)
def gen_doc(self):
out = """
// TODO: add documentation
static char Py_{shortname}_doc[] = \"undefined\";
"""
return out.format(**self.__dict__)
def gen_new(self):
out = """
// new {shortname}
static PyObject *
Py_{shortname}_new (PyTypeObject * pytype, PyObject * args, PyObject * kwds)
{{
Py_{shortname} *self;
""".format(**self.__dict__)
params = self.input_params
for p in params:
out += """
{type} {name} = {defval};""".format(defval = param_init[p['type']], **p)
plist = ", ".join(["\"%s\"" % p['name'] for p in params])
out += """
static char *kwlist[] = {{ {plist}, NULL }};""".format(plist = plist)
argchars = "".join([pyargparse_chars[p['type']] for p in params])
arglist = ", ".join(["&%s" % p['name'] for p in params])
out += """
if (!PyArg_ParseTupleAndKeywords (args, kwds, "|{argchars}", kwlist,
{arglist})) {{
return NULL;
}}
""".format(argchars = argchars, arglist = arglist)
out += """
self = (Py_{shortname} *) pytype->tp_alloc (pytype, 0);
if (self == NULL) {{
return NULL;
}}
""".format(**self.__dict__)
params = self.input_params
for p in params:
out += self.check_valid(p)
out += """
return (PyObject *)self;
}
"""
return out
def check_valid(self, p):
if p['type'] == 'uint_t':
return self.check_valid_uint(p)
if p['type'] == 'char_t*':
return self.check_valid_char(p)
else:
print ("ERROR, no idea how to check %s for validity" % p['type'])
def check_valid_uint(self, p):
name = p['name']
return """
self->{name} = {defval};
if ((sint_t){name} > 0) {{
self->{name} = {name};
}} else if ((sint_t){name} < 0) {{
PyErr_SetString (PyExc_ValueError, "can not use negative value for {name}");
return NULL;
}}
""".format(defval = aubiodefvalue[name], name = name)
def check_valid_char(self, p):
name = p['name']
return """
self->{name} = {defval};
if ({name} != NULL) {{
self->{name} = {name};
}}
""".format(defval = aubiodefvalue[name], name = name)
def gen_init(self):
out = """
// init {shortname}
static int
Py_{shortname}_init (Py_{shortname} * self, PyObject * args, PyObject * kwds)
{{
""".format(**self.__dict__)
new_name = get_name(self.new_proto)
new_params = ", ".join(["self->%s" % s['name'] for s in self.input_params])
out += """
self->o = {new_name}({new_params});
""".format(new_name = new_name, new_params = new_params)
paramchars = "%s"
paramvals = "self->method"
out += """
// return -1 and set error string on failure
if (self->o == NULL) {{
PyErr_Format (PyExc_RuntimeError, "failed creating {shortname}");
return -1;
}}
""".format(paramchars = paramchars, paramvals = paramvals, **self.__dict__)
output_create = ""
for o in self.outputs:
output_create += """
self->{name} = {create_fn}({output_size});""".format(name = o['name'], create_fn = newfromtype_fn[o['type']], output_size = objoutsize[self.shortname])
out += """
// TODO get internal params after actual object creation?
"""
out += """
// create outputs{output_create}
""".format(output_create = output_create)
out += """
return 0;
}
"""
return out
def gen_memberdef(self):
out = """
static PyMemberDef Py_{shortname}_members[] = {{
""".format(**self.__dict__)
for p in get_params_types_names(self.new_proto):
tmp = " {{\"{name}\", {ttype}, offsetof (Py_{shortname}, {name}), READONLY, \"TODO documentation\"}},\n"
pytype = member_types[p['type']]
out += tmp.format(name = p['name'], ttype = pytype, shortname = self.shortname)
out += """ {NULL}, // sentinel
};
"""
return out
def gen_del(self):
out = """
// del {shortname}
static void
Py_{shortname}_del (Py_{shortname} * self, PyObject * unused)
{{""".format(**self.__dict__)
for input_param in self.do_inputs:
if input_param['type'] == 'fmat_t *':
out += """
free(self->{0[name]}.data);""".format(input_param)
for o in self.outputs:
name = o['name']
del_out = delfromtype_fn[o['type']]
out += """
if (self->{name}) {{
{del_out}(self->{name});
}}""".format(del_out = del_out, name = name)
del_fn = get_name(self.del_proto)
out += """
if (self->o) {{
{del_fn}(self->o);
}}
Py_TYPE(self)->tp_free((PyObject *) self);
}}
""".format(del_fn = del_fn)
return out
def gen_do(self):
out = """
// do {shortname}
static PyObject*
Py_{shortname}_do (Py_{shortname} * self, PyObject * args)
{{""".format(**self.__dict__)
input_params = self.do_inputs
output_params = self.do_outputs
#print input_params
#print output_params
out += """
PyObject *outputs;"""
for input_param in input_params:
out += """
PyObject *py_{0};""".format(input_param['name'])
refs = ", ".join(["&py_%s" % p['name'] for p in input_params])
pyparamtypes = "".join([pyargparse_chars[p['type']] for p in input_params])
out += """
if (!PyArg_ParseTuple (args, "{pyparamtypes}", {refs})) {{
return NULL;
}}""".format(refs = refs, pyparamtypes = pyparamtypes, **self.__dict__)
for input_param in input_params:
out += """
if (!{pytoaubio}(py_{0[name]}, &(self->{0[name]}))) {{
return NULL;
}}""".format(input_param, pytoaubio = pytoaubio_fn[input_param['type']])
if self.shortname in objinputsize:
out += """
if (self->{0[name]}.length != {expected_size}) {{
PyErr_Format (PyExc_ValueError,
"input size of {shortname} should be %d, not %d",
{expected_size}, self->{0[name]}.length);
return NULL;
}}""".format(input_param, expected_size = objinputsize[self.shortname], **self.__dict__)
else:
out += """
// TODO: check input sizes"""
for output_param in output_params:
out += """
Py_INCREF(self->{0[name]});
if (!{pytoaubio}(self->{0[name]}, &(self->c_{0[name]}))) {{
return NULL;
}}""".format(output_param, pytoaubio = pytoaubio_fn[output_param['type']])
do_fn = get_name(self.do_proto)
inputs = ", ".join(['&(self->'+p['name']+')' for p in input_params])
c_outputs = ", ".join(["&(self->c_%s)" % p['name'] for p in self.do_outputs])
outputs = ", ".join(["self->%s" % p['name'] for p in self.do_outputs])
out += """
{do_fn}(self->o, {inputs}, {c_outputs});
""".format(
do_fn = do_fn,
inputs = inputs, c_outputs = c_outputs,
)
if len(self.do_outputs) > 1:
out += """
outputs = PyTuple_New({:d});""".format(len(self.do_outputs))
for i, p in enumerate(self.do_outputs):
out += """
PyTuple_SetItem( outputs, {i}, self->{p[name]});""".format(i = i, p = p)
else:
out += """
outputs = self->{p[name]};""".format(p = self.do_outputs[0])
out += """
return outputs;
}}
""".format(
outputs = outputs,
)
return out
def gen_set(self):
out = """
// {shortname} setters
""".format(**self.__dict__)
for set_param in self.prototypes['set']:
params = get_params_types_names(set_param)[1]
paramtype = params['type']
method_name = get_name(set_param)
param = method_name.split('aubio_'+self.shortname+'_set_')[-1]
pyparamtype = pyargparse_chars[paramtype]
out += """
static PyObject *
Pyaubio_{shortname}_set_{param} (Py_{shortname} *self, PyObject *args)
{{
uint_t err = 0;
{paramtype} {param};
if (!PyArg_ParseTuple (args, "{pyparamtype}", &{param})) {{
return NULL;
}}
err = aubio_{shortname}_set_{param} (self->o, {param});
if (err > 0) {{
PyErr_SetString (PyExc_ValueError, "error running aubio_{shortname}_set_{param}");
return NULL;
}}
Py_RETURN_NONE;
}}
""".format(param = param, paramtype = paramtype, pyparamtype = pyparamtype, **self.__dict__)
return out
def gen_get(self):
out = """
// {shortname} getters
""".format(**self.__dict__)
for method in self.prototypes['get']:
params = get_params_types_names(method)
method_name = get_name(method)
assert len(params) == 1, \
"get method has more than one parameter %s" % params
param = method_name.split('aubio_'+self.shortname+'_get_')[-1]
paramtype = get_return_type(method)
ptypeconv = pyfromtype_fn[paramtype]
out += """
static PyObject *
Pyaubio_{shortname}_get_{param} (Py_{shortname} *self, PyObject *unused)
{{
{ptype} {param} = aubio_{shortname}_get_{param} (self->o);
return (PyObject *){ptypeconv} ({param});
}}
""".format(param = param, ptype = paramtype, ptypeconv = ptypeconv,
**self.__dict__)
return out
def gen_methodef(self):
out = """
static PyMethodDef Py_{shortname}_methods[] = {{""".format(**self.__dict__)
for m in self.prototypes['set']:
name = get_name(m)
shortname = name.replace('aubio_%s_' % self.shortname, '')
out += """
{{"{shortname}", (PyCFunction) Py{name},
METH_VARARGS, ""}},""".format(name = name, shortname = shortname)
for m in self.prototypes['get']:
name = get_name(m)
shortname = name.replace('aubio_%s_' % self.shortname, '')
out += """
{{"{shortname}", (PyCFunction) Py{name},
METH_NOARGS, ""}},""".format(name = name, shortname = shortname)
out += """
{NULL} /* sentinel */
};
"""
return out
def gen_typeobject(self):
return """
PyTypeObject Py_{shortname}Type = {{
//PyObject_HEAD_INIT (NULL)
//0,
PyVarObject_HEAD_INIT (NULL, 0)
"aubio.{shortname}",
sizeof (Py_{shortname}),
0,
(destructor) Py_{shortname}_del,
0,
0,
0,
0,
0,
0,
0,
0,
0,
(ternaryfunc)Py_{shortname}_do,
0,
0,
0,
0,
Py_TPFLAGS_DEFAULT,
Py_{shortname}_doc,
0,
0,
0,
0,
0,
0,
Py_{shortname}_methods,
Py_{shortname}_members,
0,
0,
0,
0,
0,
0,
(initproc) Py_{shortname}_init,
0,
Py_{shortname}_new,
0,
0,
0,
0,
0,
0,
0,
0,
0,
}};
""".format(**self.__dict__)