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util/spkmodem-recv: simplify stdout flush logic 

when spkmodem-recv doesn't receive anything (via stdout)
after a few frames, it's assumed that the console is dead
and the buffered output is flushed

this logic is assumed superfluous when -u is set

Signed-off-by: Leah Rowe <leah@libreboot.org>
fsdg20230625
Leah Rowe 2023-06-05 00:45:05 +01:00
parent af36cc7f93
commit 118bb19ff8
1 changed files with 4 additions and 8 deletions
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12
util/spkmodem_recv/spkmodem-recv.c
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@ -20,11 +20,10 @@
#define THRESHOLD 500 #define THRESHOLD 500
#define DEBUG 0 #define DEBUG 0
#define FLUSH_TIMEOUT 1
#define ERR() (errno = errno ? errno : ECANCELED) #define ERR() (errno = errno ? errno : ECANCELED)
signed short frame[2 * SAMPLES_PER_FRAME], pulse[2 * SAMPLES_PER_FRAME]; signed short frame[2 * SAMPLES_PER_FRAME], pulse[2 * SAMPLES_PER_FRAME];
int freq_data, freq_separator, sample_count, ascii_bit = 7; int flush, freq_data, freq_separator, sample_count, ascii_bit = 7;
char ascii = 0; char ascii = 0;
void handle_audio(void); void handle_audio(void);
@ -56,15 +55,12 @@ main(int argc, char *argv[])
void void
handle_audio(void) handle_audio(void)
{ {
static int flush_count = 0; if ((flush = (sample_count > (3 * SAMPLES_PER_FRAME)))) {
if (sample_count > (3 * SAMPLES_PER_FRAME)) {
ascii_bit = 7; ascii_bit = 7;
ascii = sample_count = 0; ascii = sample_count = 0;
++flush_count;
}
if (flush_count == FLUSH_TIMEOUT) /* TODO: reset flush count? */
if (fflush(stdout) == EOF) if (fflush(stdout) == EOF)
err(ERR(), NULL); err(ERR(), NULL);
}
if ((freq_separator <= FREQ_SEP_MIN) || (freq_separator >= FREQ_SEP_MAX) if ((freq_separator <= FREQ_SEP_MIN) || (freq_separator >= FREQ_SEP_MAX)
|| (freq_data <= FREQ_DATA_MIN) || (freq_data >= FREQ_DATA_MAX)) { || (freq_data <= FREQ_DATA_MIN) || (freq_data >= FREQ_DATA_MAX)) {
fetch_sample(); fetch_sample();
@ -73,7 +69,7 @@ handle_audio(void)
if (!set_ascii_bit()) if (!set_ascii_bit())
print_char(); print_char();
sample_count = flush_count = 0; sample_count = flush = 0;
for (int sample = 0; sample < SAMPLES_PER_FRAME; sample++) for (int sample = 0; sample < SAMPLES_PER_FRAME; sample++)
fetch_sample(); fetch_sample();
} }