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#include "Python.h"
/* adding next line may raise errors ...
#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
*/
#include <./numpy/arrayobject.h>
#include <stdio.h>
struct module_state {
PyObject *error;
};
#if PY_MAJOR_VERSION >= 3
#define GETSTATE(m) ((struct module_state*)PyModule_GetState(m))
#else
#define GETSTATE(m) (&_state)
static struct module_state _state;
#endif
/* Function declarations */
static PyObject *PyMcaIOHelper_fillSupaVisio(PyObject *dummy, PyObject *args);
static PyObject *PyMcaIOHelper_readAifira(PyObject *dummy, PyObject *args);
/* Functions */
static PyObject *
PyMcaIOHelper_fillSupaVisio(PyObject *self, PyObject *args)
{
PyObject *input;
PyArrayObject *inputArray, *outputArray;
int nChannels = 2048;
unsigned short *dataPointer, x, y, ch;
int i;
npy_intp dimensions[3];
int maxy, maxch;
unsigned int *outputPointer;
if (!PyArg_ParseTuple(args, "O|d", &input, &nChannels))
return NULL;
inputArray = (PyArrayObject *)
PyArray_ContiguousFromObject(input, NPY_USHORT, 2,2);
if (inputArray == NULL)
{
struct module_state *st = GETSTATE(self);
PyErr_SetString(st->error, "Cannot parse input array");
return NULL;
}
dataPointer = (unsigned short *) PyArray_DATA(inputArray);
dataPointer++;
dimensions[1] = *dataPointer++;
dimensions[0] = *dataPointer++;
dimensions[2] = nChannels;
outputArray = (PyArrayObject *) PyArray_SimpleNew(3, dimensions, NPY_UINT);
PyArray_FILLWBYTE(outputArray, 0);
/* Do the job */
maxy=maxch=0;
outputPointer = (unsigned int *) PyArray_DATA(outputArray);
for (i = 3; i < PyArray_DIMS(inputArray)[0]; i++)
{
y = *dataPointer++;
x = *dataPointer++;
ch = *dataPointer++;
if (ch >= nChannels)
{
printf("bad reading %d\n", ch);
continue;
}
*(outputPointer+ (dimensions[1] * x + y) * nChannels + ch) += 1;
}
Py_DECREF(inputArray);
return PyArray_Return(outputArray);
}
static PyObject *
PyMcaIOHelper_readAifira(PyObject *self, PyObject *args)
{
PyObject *inputFileDescriptor;
FILE *fd;
#if PY_MAJOR_VERSION >= 3
int fh;
#endif
PyArrayObject *outputArray;
int nChannels = 2048;
unsigned short channel;
unsigned char x, y;
npy_intp dimensions[3];
unsigned int *outputPointer;
struct module_state *st = GETSTATE(self);
if (!PyArg_ParseTuple(args, "O", &inputFileDescriptor))
{
PyErr_SetString(st->error, "Error parsing input arguments");
return NULL;
}
#if PY_MAJOR_VERSION >= 3
fh = PyObject_AsFileDescriptor(inputFileDescriptor);
if (fh < 0)
{
return NULL;
}
fd = fdopen(fh, "r");
#else
if (!PyFile_Check(inputFileDescriptor))
{
PyErr_SetString(st->error, "Input is not a python file descriptor object");
return NULL;
}
fd = PyFile_AsFile(inputFileDescriptor);
#endif
if (!fd)
{
PyErr_SetString(st->error, "Cannot obtain FILE* from object");
return NULL;
}
dimensions[0] = 128;
dimensions[1] = 128;
dimensions[2] = nChannels;
outputArray = (PyArrayObject *) PyArray_SimpleNew(3, dimensions, NPY_UINT);
PyArray_FILLWBYTE(outputArray, 0);
/* Do the job */
outputPointer = (unsigned int *) PyArray_DATA(outputArray);
while(fscanf(fd, "%2c%c%c", (char *)&channel, &x, &y) == 3)
{
if (channel >= nChannels)
{
printf("bad reading %d\n", channel);
continue;
}
if (x < 1)
continue;
if (y < 1)
continue;
if (x > 128)
{
printf("bad X reading %d\n", x);
break;
continue;
}
if (y > 128)
{
printf("bad Y reading %d\n", y);
break;
continue;
}
x -= 1;
y -= 1;
/* normally pixe data are in the second channel */
if (channel > 1023)
{
channel -= 1024;
}
else
channel += 1024;
*(outputPointer + (dimensions[1] * x + y) * nChannels + channel) += 1;
}
return PyArray_Return(outputArray);
}
/* Module methods */
static PyMethodDef PyMcaIOHelper_methods[] = {
{"fillSupaVisio", PyMcaIOHelper_fillSupaVisio, METH_VARARGS},
{"readAifira", PyMcaIOHelper_readAifira, METH_VARARGS},
{NULL, NULL}
};
/* ------------------------------------------------------- */
/* Module initialization */
#if PY_MAJOR_VERSION >= 3
static int PyMcaIOHelper_traverse(PyObject *m, visitproc visit, void *arg) {
Py_VISIT(GETSTATE(m)->error);
return 0;
}
static int PyMcaIOHelper_clear(PyObject *m) {
Py_CLEAR(GETSTATE(m)->error);
return 0;
}
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
"PyMcaIOHelper",
NULL,
sizeof(struct module_state),
PyMcaIOHelper_methods,
NULL,
PyMcaIOHelper_traverse,
PyMcaIOHelper_clear,
NULL
};
#define INITERROR return NULL
PyObject *
PyInit_PyMcaIOHelper(void)
#else
#define INITERROR return
void
initPyMcaIOHelper(void)
#endif
{
struct module_state *st;
#if PY_MAJOR_VERSION >= 3
PyObject *module = PyModule_Create(&moduledef);
#else
PyObject *module = Py_InitModule("PyMcaIOHelper", PyMcaIOHelper_methods);
#endif
if (module == NULL)
INITERROR;
st = GETSTATE(module);
st->error = PyErr_NewException("PyMcaIOHelper.Error", NULL, NULL);
if (st->error == NULL) {
Py_DECREF(module);
INITERROR;
}
import_array();
#if PY_MAJOR_VERSION >= 3
return module;
#endif
}
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