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MP3: ask the board for its buffered latency #37

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Merged
bdbarnett merged 1 commit into from
Nov 7, 2026
Merged

MP3: ask the board for its buffered latency #37

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8 changes: 7 additions & 1 deletion apps/mp3/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -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.
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