From 38210cae5152a02978802cb6d77e7c2b8ede1809 Mon Sep 17 00:00:00 2001
From: Leah Rowe <leah@libreboot.org>
Date: Tue, 16 May 2023 13:33:00 +0100
Subject: [PATCH] util/spkmodem_recv: Purge unused global: amplitude
Signed-off-by: Leah Rowe <leah@libreboot.org>
---
util/spkmodem_recv/spkmodem-recv.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/util/spkmodem_recv/spkmodem-recv.c b/util/spkmodem_recv/spkmodem-recv.c
index 5f06b3b..0614d10 100644
--- a/util/spkmodem_recv/spkmodem-recv.c
+++ b/util/spkmodem_recv/spkmodem-recv.c
@@ -23,9 +23,7 @@
signed short frame[2 * SAMPLES_PER_FRAME];
signed short pulse[2 * SAMPLES_PER_FRAME];
-int ringpos = 0;
int f1, f2;
-int amplitude = 0;
int lp = 0;
int ascii_bit = 7;
char ascii = 0;
@@ -77,14 +75,14 @@ handle_audio(void)
void
fetch_sample(void)
{
- amplitude -= abs(frame[ringpos]);
+ static int ringpos = 0;
+
f1 -= pulse[ringpos];
f1 += pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)];
f2 -= pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)];
if (fread(frame + ringpos, 1, sizeof(frame[0]), stdin)
!= sizeof(frame[0]))
err(errno = ECANCELED, "Could not read frame.");
- amplitude += abs(frame[ringpos]);
if (abs(frame[ringpos]) > THRESHOLD) { /* rising/falling edge(pulse) */
pulse[ringpos] = 1;
--
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