//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Copyright 2012 California Institute of Technology. ALL RIGHTS RESERVED.
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// 
// United States Government Sponsorship acknowledged. This software is subject to
// U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
// (No [Export] License Required except when exporting to an embargoed country,
// end user, or in support of a prohibited end use). By downloading this software,
// the user agrees to comply with all applicable U.S. export laws and regulations.
// The user has the responsibility to obtain export licenses, or other export
// authority as may be required before exporting this software to any 'EAR99'
// embargoed foreign country or citizen of those countries.
//
// Author: Giangi Sacco
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




#include <Python.h>
#include "filtermodule.h"

// A C++ extension is required for this code since
// ctypes does not currently allow interfacing with C++ code
// (name-mangling and all).

static const char * __doc__ = "module for filter.F";

PyModuleDef moduledef = {
    // header
    PyModuleDef_HEAD_INIT,
    // name of the module
    "filter",
    // module documentation string
    __doc__,
    // size of the per-interpreter state of the module;
    // -1 if this state is global
    -1,
    filter_methods,
};

// initialization function for the module
// *must* be called PyInit_filter
PyMODINIT_FUNC
PyInit_filter()
{
    // create the module using moduledef struct defined above
    PyObject * module = PyModule_Create(&moduledef);
    // check whether module creation succeeded and raise an exception if not
    if (!module) {
        return module;
    }
    // otherwise, we have an initialized module
    // and return the newly created module
    return module;
}

PyObject *meanFilter_C(PyObject *self, PyObject *args)
{
  char *inFile,*outFile;
  int status,filterWidth,filterHeight,imageWidth,imageHeight;

  if(!PyArg_ParseTuple(args, "ssiiii", &inFile, &outFile, &imageWidth,
        &imageHeight,&filterWidth,&filterHeight))
    {
      return NULL;
    }

  status = meanFilterPhase(inFile, outFile, imageWidth, imageHeight,
               filterWidth,filterHeight);

  return Py_BuildValue("i",0);
}

PyObject *gaussianFilter_C(PyObject *self, PyObject *args)
{
  char *inFile,*outFile;
  int status,filterWidth,filterHeight,imageWidth,imageHeight;
  double sigma;

  if(!PyArg_ParseTuple(args, "ssiiiid", &inFile, &outFile, &imageWidth,
        &imageHeight,&filterWidth,&filterHeight,&sigma))
  {
      return NULL;
  }

  status = gaussianFilterPhase(inFile, outFile, imageWidth, imageHeight,
               filterWidth,filterHeight,sigma);

  return Py_BuildValue("i",0);
}

PyObject *medianFilter_C(PyObject *self, PyObject *args)
{
  char *inFile,*outFile;
  int status,filterWidth,filterHeight,imageWidth,imageHeight;

  if(!PyArg_ParseTuple(args, "ssiiii", &inFile, &outFile, &imageWidth,
       &imageHeight,&filterWidth,&filterHeight))
  {
      return NULL;
  }

  status = medianFilterPhase(inFile, outFile, imageWidth, imageHeight,
               filterWidth, filterHeight);

  return Py_BuildValue("i",0);
}
