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util/spkmodem_recv: Say frame in English 

Source code should be written in English.

Signed-off-by: Leah Rowe <leah@libreboot.org>
fsdg20230625
Leah Rowe 2023-05-16 08:23:19 +01:00
parent e286470432
commit abc5cfd38c
1 changed files with 13 additions and 13 deletions
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26
util/spkmodem_recv/spkmodem-recv.c
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@ -8,7 +8,7 @@
/* Compilation: gcc -o spkmodem-recv spkmodem-recv */ /* Compilation: gcc -o spkmodem-recv spkmodem-recv */
/* Usage: parec --channels=1 --rate=48000 --format=s16le | ./spkmodem-recv */ /* Usage: parec --channels=1 --rate=48000 --format=s16le | ./spkmodem-recv */
#define SAMPLES_PER_TRAME 240 #define SAMPLES_PER_FRAME 240
#define FREQ_SEP_MIN 5 #define FREQ_SEP_MIN 5
#define FREQ_SEP_MAX 15 #define FREQ_SEP_MAX 15
#define FREQ_DATA_MIN 15 #define FREQ_DATA_MIN 15
@ -19,8 +19,8 @@
#define DEBUG 0 #define DEBUG 0
#define FLUSH_TIMEOUT 1 #define FLUSH_TIMEOUT 1
static signed short trame[2 * SAMPLES_PER_TRAME]; static signed short frame[2 * SAMPLES_PER_FRAME];
static signed short pulse[2 * SAMPLES_PER_TRAME]; static signed short pulse[2 * SAMPLES_PER_FRAME];
static int ringpos = 0; static int ringpos = 0;
static int pos, f1, f2; static int pos, f1, f2;
static int amplitude = 0; static int amplitude = 0;
@ -39,7 +39,7 @@ main (int argc, char *argv[])
(void)argc; (void)argv; (void)argc; (void)argv;
while (!feof (stdin)) { while (!feof (stdin)) {
if (lp > 3 * SAMPLES_PER_TRAME) { if (lp > 3 * SAMPLES_PER_FRAME) {
bitn = 7; bitn = 7;
c = 0; c = 0;
lp = 0; lp = 0;
@ -55,7 +55,7 @@ main (int argc, char *argv[])
} }
#if DEBUG #if DEBUG
printf ("%d %d %d @%d\n", f1, f2, FREQ_DATA_THRESHOLD, printf ("%d %d %d @%d\n", f1, f2, FREQ_DATA_THRESHOLD,
ftell (stdin) - sizeof (trame)); ftell (stdin) - sizeof (frame));
#endif #endif
if (f1 < FREQ_DATA_THRESHOLD) if (f1 < FREQ_DATA_THRESHOLD)
c |= (1 << bitn); c |= (1 << bitn);
@ -71,7 +71,7 @@ main (int argc, char *argv[])
} }
lp = 0; lp = 0;
llp = 0; llp = 0;
for (i = 0; i < SAMPLES_PER_TRAME; i++) for (i = 0; i < SAMPLES_PER_FRAME; i++)
read_sample (); read_sample ();
} }
return 0; return 0;
@ -80,14 +80,14 @@ main (int argc, char *argv[])
static void static void
read_sample (void) read_sample (void)
{ {
amplitude -= abs (trame[ringpos]); amplitude -= abs (frame[ringpos]);
f1 -= pulse[ringpos]; f1 -= pulse[ringpos];
f1 += pulse[(ringpos + SAMPLES_PER_TRAME) % (2 * SAMPLES_PER_TRAME)]; f1 += pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)];
f2 -= pulse[(ringpos + SAMPLES_PER_TRAME) % (2 * SAMPLES_PER_TRAME)]; f2 -= pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)];
fread (trame + ringpos, 1, sizeof (trame[0]), stdin); fread (frame + ringpos, 1, sizeof (frame[0]), stdin);
amplitude += abs (trame[ringpos]); amplitude += abs (frame[ringpos]);
if (abs(trame[ringpos]) > THRESHOLD) { /* rising/falling edge(pulse) */ if (abs(frame[ringpos]) > THRESHOLD) { /* rising/falling edge(pulse) */
pulse[ringpos] = 1; pulse[ringpos] = 1;
pos = !pos; pos = !pos;
f2++; f2++;
@ -96,6 +96,6 @@ read_sample (void)
} }
ringpos++; ringpos++;
ringpos %= 2 * SAMPLES_PER_TRAME; ringpos %= 2 * SAMPLES_PER_FRAME;
lp++; lp++;
} }