1 files changed, 50 insertions, 0 deletions
diff --git a/src/mm-modem-helpers.c b/src/mm-modem-helpers.c
index a79ca956..5cbf0836 100644
--- a/src/mm-modem-helpers.c
+++ b/src/mm-modem-helpers.c
@@ -5871,3 +5871,53 @@ mm_parse_cpin_response (const gchar *response,
 
     return MM_MODEM_LOCK_UNKNOWN;
 }
+
+/*****************************************************************************/
+
+guint
+mm_dtmf_duration_normalize (guint duration_ms)
+{
+    /* Default to 500ms */
+    if (duration_ms == 0)
+        return 500;
+
+    /* round to next highest 100ms */
+    if (duration_ms % 100)
+        duration_ms = ((duration_ms + 100) / 100) * 100;
+
+    return CLAMP (duration_ms, 100, 1000);
+}
+
+GPtrArray *
+mm_dtmf_split (const gchar *dtmf)
+{
+    GPtrArray   *array;
+    const gchar *p = dtmf;
+    GString     *cur = NULL;
+
+    array = g_ptr_array_new ();
+
+    while (*p) {
+        if (*p == MM_CALL_DTMF_PAUSE_CHAR) {
+            if (cur) {
+                g_ptr_array_add (array, g_string_free (cur, FALSE));
+                cur = NULL;
+            }
+            g_ptr_array_add (array, g_strdup (","));
+        } else {
+            if (!cur)
+                cur = g_string_new (NULL);
+            g_string_append_c (cur, *p);
+        }
+        p++;
+    }
+    if (cur)
+        g_ptr_array_add (array, g_string_free (cur, FALSE));
+
+    if (array->len == 0) {
+        g_ptr_array_free (array, TRUE);
+        return NULL;
+    }
+
+    return array;
+}