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//
// Copyright 2012 Josh Blum
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#define GRAS_API
%module(directors="1") GRAS_Block
%feature("director") BlockPython;
%{
#include <gras/block.hpp>
%}
%include <gras/io_signature.i>
%include <gras/element.i>
%include <gras/sbuffer.hpp>
%include <gras/tags.hpp>
%include <gras/block.hpp>
%include <PMC/PMC.i>
////////////////////////////////////////////////////////////////////////
// Make a special block with safe overloads
////////////////////////////////////////////////////////////////////////
%inline %{
namespace gras
{
struct BlockPython : Block
{
BlockPython(const std::string &name):
Block(name)
{
//NOP
}
int work
(
const InputItems &input_items,
const OutputItems &output_items
)
{
PyGILState_STATE s;
s = PyGILState_Ensure();
int ret = 0;
try
{
ret = this->python_work(input_items, output_items);
}
catch(...)
{
PyGILState_Release(s);
throw;
}
PyGILState_Release(s);
return ret;
}
virtual int python_work
(
const InputItems &input_items,
const OutputItems &output_items
)
{
throw std::runtime_error("Error in BlockPython::python_work: SWIG directors issue?");
}
};
}
%}
////////////////////////////////////////////////////////////////////////
// Python overload for adding pythonic interfaces
////////////////////////////////////////////////////////////////////////
%pythoncode %{
import numpy
def sig_to_dtype_sig(sig):
if sig is None: sig = ()
return map(numpy.dtype, sig)
class Block(BlockPython):
def __init__(self, name='Block', in_sig=None, out_sig=None):
BlockPython.__init__(self, name)
self.set_input_signature(in_sig)
self.set_output_signature(in_sig)
def set_input_signature(self, sig):
self.__in_sig = sig_to_dtype_sig(sig)
BlockPython.set_input_signature(self, IOSignature([s.itemsize for s in self.__in_sig]))
def set_output_signature(self, sig):
self.__out_sig = sig_to_dtype_sig(sig)
BlockPython.set_output_signature(self, IOSignature([s.itemsize for s in self.__out_sig]))
def input_signature(self): return self.__in_sig
def output_signature(self): return self.__out_sig
def python_work(self, input_items, output_items):
print 'python work called'
%}
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