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util/spkmodem_recv: Use tabs for indentation 

The GNU indentation style is hard to read.

Signed-off-by: Leah Rowe <leah@libreboot.org>
fsdg20230625
Leah Rowe 2023-05-16 07:53:23 +01:00
parent 9152d0f939
commit 22633e0dc0
1 changed files with 54 additions and 57 deletions
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111
util/spkmodem_recv/spkmodem-recv.c
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@ -5,7 +5,7 @@
#include <stdlib.h>
#include <string.h>
/* Compilation: gcc -o spkmodem-recv spkmodem-recv */
/* Compilation: gcc -o spkmodem-recv spkmodem-recv */
/* Usage: parec --channels=1 --rate=48000 --format=s16le | ./spkmodem-recv */
#define SAMPLES_PER_TRAME 240
@ -29,72 +29,69 @@ static int lp = 0;
static void
read_sample (void)
{
amplitude -= abs (trame[ringpos]);
f1 -= pulse[ringpos];
f1 += pulse[(ringpos + SAMPLES_PER_TRAME) % (2 * SAMPLES_PER_TRAME)];
f2 -= pulse[(ringpos + SAMPLES_PER_TRAME) % (2 * SAMPLES_PER_TRAME)];
fread (trame + ringpos, 1, sizeof (trame[0]), stdin);
amplitude += abs (trame[ringpos]);
amplitude -= abs (trame[ringpos]);
f1 -= pulse[ringpos];
f1 += pulse[(ringpos + SAMPLES_PER_TRAME) % (2 * SAMPLES_PER_TRAME)];
f2 -= pulse[(ringpos + SAMPLES_PER_TRAME) % (2 * SAMPLES_PER_TRAME)];
fread (trame + ringpos, 1, sizeof (trame[0]), stdin);
amplitude += abs (trame[ringpos]);
if (pos ? (trame[ringpos] < -THRESHOLD)
: (trame[ringpos] > +THRESHOLD))
{
pulse[ringpos] = 1;
pos = !pos;
f2++;
}
else
pulse[ringpos] = 0;
ringpos++;
ringpos %= 2 * SAMPLES_PER_TRAME;
lp++;
if (pos ? (trame[ringpos] < -THRESHOLD)
: (trame[ringpos] > +THRESHOLD)) {
pulse[ringpos] = 1;
pos = !pos;
f2++;
} else {
pulse[ringpos] = 0;
}
ringpos++;
ringpos %= 2 * SAMPLES_PER_TRAME;
lp++;
}
int
main ()
{
int bitn = 7;
char c = 0;
int i;
int llp = 0;
while (!feof (stdin))
{
if (lp > 3 * SAMPLES_PER_TRAME)
{
bitn = 7;
c = 0;
lp = 0;
llp++;
}
if (llp == FLUSH_TIMEOUT)
fflush (stdout);
if (f2 > FREQ_SEP_MIN && f2 < FREQ_SEP_MAX
&& f1 > FREQ_DATA_MIN && f1 < FREQ_DATA_MAX)
{
int bitn = 7;
char c = 0;
int i;
int llp = 0;
while (!feof (stdin)) {
if (lp > 3 * SAMPLES_PER_TRAME) {
bitn = 7;
c = 0;
lp = 0;
llp++;
}
if (llp == FLUSH_TIMEOUT)
fflush (stdout);
if (f2 > FREQ_SEP_MIN && f2 < FREQ_SEP_MAX
&& f1 > FREQ_DATA_MIN && f1 < FREQ_DATA_MAX) {
#if DEBUG
printf ("%d %d %d @%d\n", f1, f2, FREQ_DATA_THRESHOLD,
ftell (stdin) - sizeof (trame));
printf ("%d %d %d @%d\n", f1, f2, FREQ_DATA_THRESHOLD,
ftell (stdin) - sizeof (trame));
#endif
if (f1 < FREQ_DATA_THRESHOLD)
c |= (1 << bitn);
bitn--;
if (bitn < 0)
{
if (f1 < FREQ_DATA_THRESHOLD)
c |= (1 << bitn);
bitn--;
if (bitn < 0) {
#if DEBUG
printf ("<%c, %x>", c, c);
printf ("<%c, %x>", c, c);
#else
printf ("%c", c);
printf ("%c", c);
#endif
bitn = 7;
c = 0;
}
lp = 0;
llp = 0;
for (i = 0; i < SAMPLES_PER_TRAME; i++)
read_sample ();
continue;
bitn = 7;
c = 0;
}
lp = 0;
llp = 0;
for (i = 0; i < SAMPLES_PER_TRAME; i++)
read_sample ();
continue;
}
read_sample ();
}
read_sample ();
}
return 0;
return 0;
}