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/*------------------------------------------------------------------------
* Copyright 2009 (c) Jeff Brown <spadix@users.sourceforge.net>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
#include "zbarmodule.h"
static char imagescanner_doc[] =
PyDoc_STR("scan images for barcodes.\n"
"\n"
"attaches symbols to image for each decoded result.");
static zbarImageScanner *imagescanner_new(PyTypeObject *type, PyObject *args,
PyObject *kwds)
{
static char *kwlist[] = { NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "", kwlist))
return (NULL);
zbarImageScanner *self = (zbarImageScanner *)type->tp_alloc(type, 0);
if (!self)
return (NULL);
self->zscn = zbar_image_scanner_create();
if (!self->zscn) {
Py_DECREF(self);
return (NULL);
}
return (self);
}
static void imagescanner_dealloc(zbarImageScanner *self)
{
zbar_image_scanner_destroy(self->zscn);
((PyObject *)self)->ob_type->tp_free((PyObject *)self);
}
static zbarSymbolSet *imagescanner_get_results(zbarImageScanner *self,
void *closure)
{
const zbar_symbol_set_t *zsyms = zbar_image_scanner_get_results(self->zscn);
return (zbarSymbolSet_FromSymbolSet(zsyms));
}
static PyGetSetDef imagescanner_getset[] = {
{ "results", (getter)imagescanner_get_results, NULL, NULL, NULL },
{ NULL } /* Sentinel */
};
static PyObject *imagescanner_set_config(zbarImageScanner *self, PyObject *args,
PyObject *kwds)
{
zbar_symbol_type_t sym = ZBAR_NONE;
zbar_config_t cfg = ZBAR_CFG_ENABLE;
int val = 1;
static char *kwlist[] = { "symbology", "config", "value", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iii", kwlist, &sym, &cfg,
&val))
return (NULL);
if (zbar_image_scanner_set_config(self->zscn, sym, cfg, val)) {
PyErr_SetString(PyExc_ValueError, "invalid configuration setting");
return (NULL);
}
Py_RETURN_NONE;
}
static PyObject *imagescanner_parse_config(zbarImageScanner *self,
PyObject *args, PyObject *kwds)
{
const char *cfg = NULL;
static char *kwlist[] = { "config", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &cfg))
return (NULL);
if (zbar_image_scanner_parse_config(self->zscn, cfg)) {
PyErr_Format(PyExc_ValueError, "invalid configuration setting: %s",
cfg);
return (NULL);
}
Py_RETURN_NONE;
}
static PyObject *imagescanner_enable_cache(zbarImageScanner *self,
PyObject *args, PyObject *kwds)
{
unsigned char enable = 1;
static char *kwlist[] = { "enable", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O&", kwlist, object_to_bool,
&enable))
return (NULL);
zbar_image_scanner_enable_cache(self->zscn, enable);
Py_RETURN_NONE;
}
static PyObject *imagescanner_recycle(zbarImageScanner *self, PyObject *args,
PyObject *kwds)
{
zbarImage *img = NULL;
static char *kwlist[] = { "image", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!", kwlist, &zbarImage_Type,
&img))
return (NULL);
zbar_image_scanner_recycle_image(self->zscn, img->zimg);
Py_RETURN_NONE;
}
static PyObject *imagescanner_scan(zbarImageScanner *self, PyObject *args,
PyObject *kwds)
{
zbarImage *img = NULL;
static char *kwlist[] = { "image", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!", kwlist, &zbarImage_Type,
&img))
return (NULL);
if (zbarImage_validate(img))
return (NULL);
int n = zbar_scan_image(self->zscn, img->zimg);
if (n < 0) {
PyErr_Format(PyExc_ValueError, "unsupported image format");
return (NULL);
}
#if PY_MAJOR_VERSION >= 3
return (PyLong_FromLong(n));
#else
return (PyInt_FromLong(n));
#endif
}
static PyMethodDef imagescanner_methods[] = {
{
"set_config",
(PyCFunction)imagescanner_set_config,
METH_VARARGS | METH_KEYWORDS,
},
{
"parse_config",
(PyCFunction)imagescanner_parse_config,
METH_VARARGS | METH_KEYWORDS,
},
{
"enable_cache",
(PyCFunction)imagescanner_enable_cache,
METH_VARARGS | METH_KEYWORDS,
},
{
"recycle",
(PyCFunction)imagescanner_recycle,
METH_VARARGS | METH_KEYWORDS,
},
{
"scan",
(PyCFunction)imagescanner_scan,
METH_VARARGS | METH_KEYWORDS,
},
{
NULL,
},
};
PyTypeObject zbarImageScanner_Type = {
PyVarObject_HEAD_INIT(NULL, 0).tp_name = "zbar.ImageScanner",
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_doc = imagescanner_doc,
.tp_basicsize = sizeof(zbarImageScanner),
.tp_new = (newfunc)imagescanner_new,
.tp_dealloc = (destructor)imagescanner_dealloc,
.tp_getset = imagescanner_getset,
.tp_methods = imagescanner_methods,
};
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