X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=src%2Finput%2Ffeed_queue.c;h=ca91af3756602d7ccb50fe47de365d2eef817e8f;hp=b25fa77affdc8b7f90731dafa62ed5ef6b6ab9ab;hb=43e6f7a7798f579c97f34f77c586a4962a41c29a;hpb=b7721913feb5f4dfdbbe0ad60dd6cf931757998b

diff --git a/src/input/feed_queue.c b/src/input/feed_queue.c
index b25fa77a..ca91af37 100644
--- a/src/input/feed_queue.c
+++ b/src/input/feed_queue.c
@@ -132,6 +132,7 @@ struct feed_queue_analog {
 	struct sr_analog_meaning meaning;
 	struct sr_analog_spec spec;
 	GSList *channels;
+	float scale_factor;
 };
 
 SR_API struct feed_queue_analog *feed_queue_analog_alloc(
@@ -162,11 +163,37 @@ SR_API struct feed_queue_analog *feed_queue_analog_alloc(
 	return q;
 }
 
+SR_API int feed_queue_analog_params(struct feed_queue_analog *q,
+	float scale_factor,
+	enum sr_mq mq, enum sr_mqflag mq_flag, enum sr_unit unit)
+{
+	int ret;
+
+	if (!q)
+		return SR_ERR_ARG;
+
+	ret = feed_queue_analog_flush(q);
+	if (ret != SR_OK)
+		return ret;
+
+	q->scale_factor = scale_factor;
+	if (q->scale_factor == 1.0)
+		q->scale_factor = 0.0;
+
+	q->meaning->mq = mq;
+	q->meaning->mqflags = mqflags;
+	q->meaning->unit = unit;
+
+	return SR_OK;
+}
+
 SR_API int feed_queue_analog_submit(struct feed_queue_analog *q,
 	float data, size_t count)
 {
 	int ret;
 
+	if (q->scale_factor)
+		data *= q->scale_factor;
 	while (count--) {
 		q->data_values[q->fill_count++] = data;
 		if (q->fill_count == q->alloc_count) {