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util/spkmodem-recv: reset char precisely on timeout

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instead of when it goes above, do it precisely on the
timeout. otherwise, if by sheer chance the signal
pauses and we reset the byte - sure, ok, but it's a
bit tight and we run the risk of advancing another
frame, depending on the timing.

this is a minor edge case, probably rarely ever
triggered in practise.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-12 21:33:46 +00:00
parent 10e09d6402
commit c8d078f9c7
1 changed files with 1 additions and 1 deletions
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util/spkmodem_decode/spkmodem-decode.c
+1 -1
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@@ -259,7 +259,7 @@ handle_audio(struct decoder_state *st)
* If the modem signal disappears for several frames, * If the modem signal disappears for several frames,
* discard the partially assembled character. * discard the partially assembled character.
*/ */
if (st->sample_count > (3 * SAMPLES_PER_FRAME)) if (st->sample_count >= (3 * SAMPLES_PER_FRAME))
reset_char(st); reset_char(st);
if (!valid_signal(st)) { if (!valid_signal(st)) {
decode_pulse(st); decode_pulse(st);