libreboot
/
lbmk
1
0
Fork 0
Code Packages Projects Releases Activity

util/spkmodem_recv: Move logic out of main 

Main should only be a skeletal structure.

Actual logic should always be handled externally.

Signed-off-by: Leah Rowe <leah@libreboot.org>
fsdg20230625
Leah Rowe 2023-05-16 10:50:35 +01:00
parent 3d55429443
commit 179323819b
1 changed files with 46 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
util/spkmodem_recv/spkmodem-recv.c
View File

@ -27,56 +27,62 @@ int amplitude = 0;
int lp = 0;
void read_sample(void);
void print_chars(void);
int
main(int argc, char *argv[])
{
int ascii_bit = 7;
char ascii = 0;
int i;
int llp = 0;
(void)argc; (void)argv;
while (!feof(stdin)) {
if (lp > 3 * SAMPLES_PER_FRAME) {
ascii_bit = 7;
ascii = 0;
lp = 0;
llp++;
}
if (llp == FLUSH_TIMEOUT)
fflush(stdout);
while (!feof(stdin))
print_chars();
if (f2 <= FREQ_SEP_MIN || f2 >= FREQ_SEP_MAX
|| f1 <= FREQ_DATA_MIN || f1 >= FREQ_DATA_MAX) {
read_sample();
continue;
}
#if DEBUG
printf ("%d %d %d @%d\n", f1, f2, FREQ_DATA_THRESHOLD,
ftell(stdin) - sizeof(frame));
#endif
if (f1 < FREQ_DATA_THRESHOLD)
ascii |= (1 << ascii_bit);
ascii_bit--;
if (ascii_bit < 0) {
#if DEBUG
printf("<%c, %x>", ascii, ascii);
#else
printf("%c", ascii);
#endif
ascii_bit = 7;
ascii = 0;
}
lp = 0;
llp = 0;
for (i = 0; i < SAMPLES_PER_FRAME; i++)
read_sample();
}
return 0;
}
void
print_chars(void)
{
static int ascii_bit = 7;
static char ascii = 0;
static int llp = 0;
if (lp > 3 * SAMPLES_PER_FRAME) {
ascii_bit = 7;
ascii = 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) {
read_sample();
return;
}
#if DEBUG
printf ("%d %d %d @%d\n", f1, f2, FREQ_DATA_THRESHOLD,
ftell(stdin) - sizeof(frame));
#endif
if (f1 < FREQ_DATA_THRESHOLD)
ascii |= (1 << ascii_bit);
ascii_bit--;
if (ascii_bit < 0) {
#if DEBUG
printf("<%c, %x>", ascii, ascii);
#else
printf("%c", ascii);
#endif
ascii_bit = 7;
ascii = 0;
}
lp = 0;
llp = 0;
for (int i = 0; i < SAMPLES_PER_FRAME; i++)
read_sample();
}
void
read_sample(void)
{