add function to get number of tempos found in SMF tempo map

2 files changed, 11 insertions, 0 deletions

diff --git a/libs/evoral/src/libsmf/smf.h b/libs/evoral/src/libsmf/smf.h
index 2be80a571c..82647779e8 100644
--- a/libs/evoral/src/libsmf/smf.h
+++ b/libs/evoral/src/libsmf/smf.h
@@ -404,6 +404,7 @@ int smf_save(smf_t *smf, FILE *file) WARN_UNUSED_RESULT;
 /* Routines for manipulating smf_tempo_t. */
 smf_tempo_t *smf_get_tempo_by_pulses(const smf_t *smf, size_t pulses) WARN_UNUSED_RESULT;
 smf_tempo_t *smf_get_tempo_by_seconds(const smf_t *smf, double seconds) WARN_UNUSED_RESULT;
+int          smf_get_tempo_count (const smf_t *smf) WARN_UNUSED_RESULT;
 smf_tempo_t *smf_get_tempo_by_number(const smf_t *smf, size_t number) WARN_UNUSED_RESULT;
 smf_tempo_t *smf_get_last_tempo(const smf_t *smf) WARN_UNUSED_RESULT;
 
diff --git a/libs/evoral/src/libsmf/smf_tempo.c b/libs/evoral/src/libsmf/smf_tempo.c
index c172314815..b2549d5511 100644
--- a/libs/evoral/src/libsmf/smf_tempo.c
+++ b/libs/evoral/src/libsmf/smf_tempo.c
@@ -253,6 +253,16 @@ smf_create_tempo_map_and_compute_seconds(smf_t *smf)
 	/* Not reached. */
 }
 
+int
+smf_get_tempo_count (const smf_t *smf)
+{
+	if (!smf->tempo_array) {
+		return 0;
+	}
+
+	return smf->tempo_array->len;
+}
+
 smf_tempo_t *
 smf_get_tempo_by_number(const smf_t *smf, size_t number)
 {