+#endif
+
+string
+length2string (const int64_t frames, const double sample_rate)
+{
+ int64_t secs = (int64_t) floor (frames / sample_rate);
+ int64_t hrs = secs / 3600LL;
+ secs -= (hrs * 3600LL);
+ int64_t mins = secs / 60LL;
+ secs -= (mins * 60LL);
+
+ int64_t total_secs = (hrs * 3600LL) + (mins * 60LL) + secs;
+ int64_t frames_remaining = (int64_t) floor (frames - (total_secs * sample_rate));
+ float fractional_secs = (float) frames_remaining / sample_rate;
+
+ char duration_str[64];
+ sprintf (duration_str, "%02" PRIi64 ":%02" PRIi64 ":%05.2f", hrs, mins, (float) secs + fractional_secs);
+
+ return duration_str;
+}