+ g_slist_free_full(annotation_rows, &annotation_row_free);
+ Py_XDECREF(py_ann_rows);
+ PyGILState_Release(gstate);
+
+ return SRD_ERR_PYTHON;
+}
+
+/* Convert binary classes to GSList of char **. */
+static int get_binary_classes(struct srd_decoder *dec)
+{
+ PyObject *py_bin_classes, *py_bin_class;
+ GSList *bin_classes;
+ char **bin;
+ ssize_t i;
+ PyGILState_STATE gstate;
+
+ gstate = PyGILState_Ensure();
+
+ if (!PyObject_HasAttrString(dec->py_dec, "binary")) {
+ PyGILState_Release(gstate);
+ return SRD_OK;
+ }
+
+ bin_classes = NULL;
+
+ py_bin_classes = PyObject_GetAttrString(dec->py_dec, "binary");
+ if (!py_bin_classes)
+ goto except_out;
+
+ if (!PyTuple_Check(py_bin_classes)) {
+ srd_err("Protocol decoder %s binary classes should "
+ "be a tuple.", dec->name);
+ goto err_out;
+ }
+
+ for (i = PyTuple_Size(py_bin_classes) - 1; i >= 0; i--) {
+ py_bin_class = PyTuple_GetItem(py_bin_classes, i);
+ if (!py_bin_class)
+ goto except_out;
+
+ if (!PyTuple_Check(py_bin_class)
+ || PyTuple_Size(py_bin_class) != 2) {
+ srd_err("Protocol decoder %s binary classes should "
+ "consist only of tuples of 2 elements.",
+ dec->name);
+ goto err_out;
+ }
+ if (py_strseq_to_char(py_bin_class, &bin) != SRD_OK)
+ goto err_out;
+
+ bin_classes = g_slist_prepend(bin_classes, bin);
+ }
+ dec->binary = bin_classes;
+ Py_DECREF(py_bin_classes);
+ PyGILState_Release(gstate);
+
+ return SRD_OK;
+
+except_out:
+ srd_exception_catch("Failed to get %s decoder binary classes",
+ dec->name);
+
+err_out:
+ g_slist_free_full(bin_classes, (GDestroyNotify)&g_strfreev);
+ Py_XDECREF(py_bin_classes);
+ PyGILState_Release(gstate);
+
+ return SRD_ERR_PYTHON;
+}
+
+/* Check whether the Decoder class defines the named method. */
+static int check_method(PyObject *py_dec, const char *mod_name,
+ const char *method_name)
+{
+ PyObject *py_method;
+ int is_callable;
+ PyGILState_STATE gstate;
+
+ gstate = PyGILState_Ensure();
+
+ py_method = PyObject_GetAttrString(py_dec, method_name);
+ if (!py_method) {
+ srd_exception_catch("Protocol decoder %s Decoder class "
+ "has no %s() method", mod_name, method_name);
+ PyGILState_Release(gstate);
+ return SRD_ERR_PYTHON;
+ }
+
+ is_callable = PyCallable_Check(py_method);
+ Py_DECREF(py_method);
+
+ PyGILState_Release(gstate);
+
+ if (!is_callable) {
+ srd_err("Protocol decoder %s Decoder class attribute '%s' "
+ "is not a method.", mod_name, method_name);
+ return SRD_ERR_PYTHON;
+ }
+
+ return SRD_OK;
+}
+
+/**
+ * Get the API version of the specified decoder.
+ *
+ * @param d The decoder to use. Must not be NULL.
+ *
+ * @return The API version of the decoder, or 0 upon errors.
+ *
+ * @private
+ */
+SRD_PRIV long srd_decoder_apiver(const struct srd_decoder *d)
+{
+ PyObject *py_apiver;
+ long apiver;
+ PyGILState_STATE gstate;
+
+ if (!d)
+ return 0;
+
+ gstate = PyGILState_Ensure();
+
+ py_apiver = PyObject_GetAttrString(d->py_dec, "api_version");
+ apiver = (py_apiver && PyLong_Check(py_apiver))
+ ? PyLong_AsLong(py_apiver) : 0;
+ Py_XDECREF(py_apiver);
+
+ PyGILState_Release(gstate);
+
+ return apiver;
+}
+
+static gboolean contains_duplicates(GSList *list)
+{
+ for (GSList *l1 = list; l1; l1 = l1->next) {
+ for (GSList *l2 = l1->next; l2; l2 = l2->next)
+ if (!strcmp(l1->data, l2->data))
+ return TRUE;
+ }
+
+ return FALSE;
+}