From 5414d192dfce10d8be7ca7e7053f335ed30bb05b Mon Sep 17 00:00:00 2001
From: Brad Barnett <127794626+bdbarnett@users.noreply.github.com>
Date: Fri, 6 Nov 2026 20:32:57 -0600
Subject: [PATCH] MP3: ask the board for its buffered latency

A player doesn't need an instrument's latency, and on a board that sizes its
ring from it (the GIGA's DAC) more buffering rides out stalls of the
interpreter.
---
 apps/mp3/__init__.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/apps/mp3/__init__.py b/apps/mp3/__init__.py
index f41ce8c..661f0cb 100644
--- a/apps/mp3/__init__.py
+++ b/apps/mp3/__init__.py
@@ -152,7 +152,13 @@ def play(i=None):
             st["out"].close()
             st["out"] = None
         if st["out"] is None:
-            st["out"] = bp.audio_out(AudioFormat(song.sample_rate, song.channel_count, 16))
+            fmt_out = AudioFormat(song.sample_rate, song.channel_count, 16)
+            try:
+                # A player can trade latency for fewer dropouts: a board
+                # with a choice buffers more.
+                st["out"] = bp.audio_out(fmt_out, latency="buffered")
+            except TypeError:  # an audio_out that takes no latency
+                st["out"] = bp.audio_out(fmt_out)
             # service() refills the decoder's file buffer from this thread
             # (the pump on the other core can't read the card): on the app's
             # timer, so it stops when the app closes.