loop_duration_seconds returned

app.py

@@ -293,6 +293,13 @@ def generate(
             loudness_headroom_db=loudness_headroom_db,
         )
 
+    total_samples = int(wav.samples.shape[0])
+    sample_rate = int(get_mrt().sample_rate)  # or mrt.sample_rate (same instance here)
+    loop_duration_seconds = total_samples / float(sample_rate)
+
+    # Also include the bar math (useful for sanity checks downstream)
+    seconds_per_bar = (60.0 / float(bpm)) * int(beats_per_bar)
+
     # Return base64 WAV + minimal metadata
     buf = io.BytesIO()
     # add format="WAV" when writing to a file-like object
@@ -310,9 +317,15 @@ def generate(
             "style_weights": weights,
             "loop_weight": loop_weight,
             "loudness": loud_stats,
-            "sample_rate": mrt.sample_rate,
+            "sample_rate": sample_rate,
             "channels": mrt.num_channels,
             "crossfade_seconds": mrt.config.crossfade_length,
+
+            # New timing fields
+            "total_samples": total_samples,
+            "seconds_per_bar": seconds_per_bar,
+            "loop_duration_seconds": loop_duration_seconds,
+
             # Echo the actual knobs used
             "guidance_weight": guidance_weight,
             "temperature": temperature,