X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=decoder.c;h=71e9122181324fad0325314ddbf78eb75f2fc1a6;hb=d510f7b3d5d03c6fca5b6af4e184dc2f46da9a1a;hp=a44a86a094ddfc6fa8b615aa3724e3b404e1bd13;hpb=c57d10136f77a9011c1179d584dca68fecb12b09;p=libsigrokdecode.git

diff --git a/decoder.c b/decoder.c
index a44a86a..71e9122 100644
--- a/decoder.c
+++ b/decoder.c
@@ -43,11 +43,11 @@
 static GSList *pd_list = NULL;
 
 /* srd.c */
-extern GSList *searchpaths;
+extern SRD_PRIV GSList *searchpaths;
 
 /* session.c */
-extern GSList *sessions;
-extern int max_session_id;
+extern SRD_PRIV GSList *sessions;
+extern SRD_PRIV int max_session_id;
 
 /* module_sigrokdecode.c */
 extern SRD_PRIV PyObject *mod_sigrokdecode;
@@ -366,6 +366,17 @@ SRD_API int srd_decoder_load(const char *module_name)
 	}
 	Py_CLEAR(py_basedec);
 
+	/*
+	 * Check that thіs decoder has the correct PD API version.
+	 * PDs of different API versions are incompatible and cannot work.
+	 */
+	py_long = PyObject_GetAttrString(d->py_dec, "api_version");
+	if (PyLong_AsLong(py_long) != 2) {
+		srd_err("Only PDs of API version 2 are supported.");
+		goto err_out;
+	}
+	Py_CLEAR(py_long);
+
 	/* Check for a proper start() method. */
 	if (!PyObject_HasAttrString(d->py_dec, "start")) {
 		srd_err("Protocol decoder %s has no start() method Decoder "