zbar_image_scanner_t *zbar_image_scanner_create () { zbar_image_scanner_t *iscn = calloc(1, sizeof(zbar_image_scanner_t)); if(!iscn) return(NULL); iscn->dcode = zbar_decoder_create(); iscn->scn = zbar_scanner_create(iscn->dcode); if(!iscn->dcode || !iscn->scn) { zbar_image_scanner_destroy(iscn); return(NULL); } zbar_decoder_set_userdata(iscn->dcode, iscn); zbar_decoder_set_handler(iscn->dcode, symbol_handler); #ifdef ENABLE_QRCODE iscn->qr = _zbar_qr_create(); #endif /* apply default configuration */ CFG(iscn, ZBAR_CFG_X_DENSITY) = 1; CFG(iscn, ZBAR_CFG_Y_DENSITY) = 1; zbar_image_scanner_set_config(iscn, 0, ZBAR_CFG_POSITION, 1); zbar_image_scanner_set_config(iscn, 0, ZBAR_CFG_UNCERTAINTY, 2); zbar_image_scanner_set_config(iscn, ZBAR_QRCODE, ZBAR_CFG_UNCERTAINTY, 0); zbar_image_scanner_set_config(iscn, ZBAR_CODE128, ZBAR_CFG_UNCERTAINTY, 0); zbar_image_scanner_set_config(iscn, ZBAR_CODE93, ZBAR_CFG_UNCERTAINTY, 0); zbar_image_scanner_set_config(iscn, ZBAR_CODE39, ZBAR_CFG_UNCERTAINTY, 0); zbar_image_scanner_set_config(iscn, ZBAR_CODABAR, ZBAR_CFG_UNCERTAINTY, 1); zbar_image_scanner_set_config(iscn, ZBAR_COMPOSITE, ZBAR_CFG_UNCERTAINTY, 0); return(iscn); }
static int decoder_clear (zbarDecoder *self) { zbar_decoder_set_handler(self->zdcode, NULL); zbar_decoder_set_userdata(self->zdcode, NULL); Py_CLEAR(self->handler); Py_CLEAR(self->args); return(0); }
static PyObject* decoder_set_handler (zbarDecoder *self, PyObject *args, PyObject *kwds) { PyObject *handler = Py_None; PyObject *closure = Py_None; static char *kwlist[] = { "handler", "closure", NULL }; if(!PyArg_ParseTupleAndKeywords(args, kwds, "|OO", kwlist, &handler, &closure)) return(NULL); if(handler != Py_None && !PyCallable_Check(handler)) { PyErr_Format(PyExc_ValueError, "handler %.50s is not callable", handler->ob_type->tp_name); return(NULL); } Py_CLEAR(self->handler); Py_CLEAR(self->args); if(handler != Py_None) { self->args = PyTuple_New(2); if(!self->args) return(NULL); Py_INCREF(self); Py_INCREF(closure); PyTuple_SET_ITEM(self->args, 0, (PyObject*)self); PyTuple_SET_ITEM(self->args, 1, closure); Py_INCREF(handler); self->handler = handler; zbar_decoder_set_handler(self->zdcode, decode_handler); } else { self->handler = self->args = NULL; zbar_decoder_set_handler(self->zdcode, NULL); } Py_RETURN_NONE; }