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-rw-r--r--src/mm-modem-helpers.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mm-modem-helpers.h b/src/mm-modem-helpers.h
index eb62a551..74626c90 100644
--- a/src/mm-modem-helpers.h
+++ b/src/mm-modem-helpers.h
@@ -643,4 +643,9 @@ guint mm_string_uint_map_lookup (const MMStringUintMap *map,
MMModemLock mm_parse_cpin_response (const gchar *response,
gboolean expect_cpin_prefix);
+/*****************************************************************************/
+
+/* Helper to clamp duration and round to next 100ms */
+guint mm_dtmf_duration_normalize (guint duration_ms);
+
#endif /* MM_MODEM_HELPERS_H */