speed-up smf_track_delete() from O(N^2) to O(n)

diff --git a/libs/evoral/src/libsmf/smf.c b/libs/evoral/src/libsmf/smf.c
index 3fde1d831e7b021191360ff70908677a3b753e20..3b5eea1d60ccef09fc9e8eb66890413a5eec8140 100644 (file)
--- a/libs/evoral/src/libsmf/smf.c
+++ b/libs/evoral/src/libsmf/smf.c
@@ -133,15 +133,20 @@ smf_track_delete(smf_track_t *track)
        assert(track);
        assert(track->events_array);
 
-       /* Remove all the events, from last to first. */
-       while (track->events_array->len > 0)
-               smf_event_delete((smf_event_t*)g_ptr_array_index(track->events_array, track->events_array->len - 1));
+       /* Remove all the events */
+       for (unsigned int i=0; i < track->events_array->len; ++i) {
+               smf_event_t* ev = g_ptr_array_index(track->events_array, i);
+               free (ev->midi_buffer);
+               free (ev);
+       }
+
+       g_ptr_array_remove_range(track->events_array, 0, track->events_array->len);
+       track->number_of_events = 0;
 
        if (track->smf)
                smf_track_remove_from_smf(track);
 
        assert(track->events_array->len == 0);
-       assert(track->number_of_events == 0);
        g_ptr_array_free(track->events_array, TRUE);
 
        memset(track, 0, sizeof(smf_track_t));