Make srd_inst_decode() return the actual decoder state, not SRD_OK

2 files changed, 9 insertions, 1 deletions

diff --git a/instance.c b/instance.c
index e4f8ff7..075bf09 100644
--- a/instance.c
+++ b/instance.c
@@ -398,6 +398,7 @@ SRD_API struct srd_decoder_inst *srd_inst_new(struct srd_session *sess,
 	di->got_new_samples = FALSE;
 	di->handled_all_samples = FALSE;
 	di->want_wait_terminate = FALSE;
+	di->decoder_state = SRD_OK;
 
 	/*
 	 * Strictly speaking initialization of statically allocated
@@ -471,6 +472,7 @@ static void srd_inst_reset_state(struct srd_decoder_inst *di)
 	di->got_new_samples = FALSE;
 	di->handled_all_samples = FALSE;
 	di->want_wait_terminate = FALSE;
+	di->decoder_state = SRD_OK;
 	/* Conditions and mutex got reset after joining the thread. */
 }
 
@@ -1032,6 +1034,9 @@ static gpointer di_thread(gpointer data)
 	py_res = PyObject_CallMethod(di->py_inst, "decode", NULL);
 	srd_dbg("%s: decode() method terminated.", di->inst_id);
 
+	if (!py_res)
+		di->decoder_state = SRD_ERR;
+
 	/*
 	 * Make sure to unblock potentially pending srd_inst_decode()
 	 * calls in application threads after the decode() method might
@@ -1272,7 +1277,7 @@ SRD_PRIV int srd_inst_terminate_reset(struct srd_decoder_inst *di)
 			return ret;
 	}
 
-	return SRD_OK;
+	return di->decoder_state;
 }
 
 /** @private */
diff --git a/libsigrokdecode.h b/libsigrokdecode.h
index a26bce9..deba470 100644
--- a/libsigrokdecode.h
+++ b/libsigrokdecode.h
@@ -277,6 +277,9 @@ struct srd_decoder_inst {
 	/** Requests termination of wait() and decode(). */
 	gboolean want_wait_terminate;
 
+	/** Indicates the current state of the decoder stack. */
+	int decoder_state;
+
 	GCond got_new_samples_cond;
 	GCond handled_all_samples_cond;
 	GMutex data_mutex;