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util/spkmodem_recv: Purge unused global: amplitude 

Signed-off-by: Leah Rowe <leah@libreboot.org>
fsdg20230625
Leah Rowe 2023-05-16 13:33:00 +01:00
parent 63e43819b3
commit 5d03598b99
1 changed files with 2 additions and 4 deletions
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6
util/spkmodem_recv/spkmodem-recv.c
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@ -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;