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util/spkmodem-recv: handle fread errors

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also handle EOF condition and exit cleanly.

don't use dirty feof.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-11 23:30:22 +00:00
parent 9195ff97b7
commit bf9c4a67f8
1 changed files with 10 additions and 4 deletions
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14
util/spkmodem_recv/spkmodem-recv.c
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@@ -80,7 +80,7 @@ main(int argc, char *argv[])
setvbuf(stdout, NULL, _IONBF, 0);
while (!feof(stdin))
while (1)
handle_audio();
return EXIT_SUCCESS;
@@ -112,16 +112,22 @@ handle_audio(void)
static void
decode_pulse(void)
{
size_t n;
int next_ringpos = (ringpos + SAMPLES_PER_FRAME) % MAX_SAMPLES;
freq_data -= pulse[ringpos];
freq_data += pulse[next_ringpos];
freq_separator -= pulse[next_ringpos];
fread(frame + ringpos, 1, sizeof(frame[0]), stdin);
n = fread(frame + ringpos, 1, sizeof(frame[0]), stdin);
if (ferror(stdin) != 0)
err(errno, "Could not read from frame.");
if (n != sizeof(frame[0])) {
if (feof(stdin))
exit(EXIT_SUCCESS);
if (ferror(stdin))
err(errno, "Could not read from frame.");
}
pulse[ringpos] = (abs(frame[ringpos]) > THRESHOLD) ? 1 : 0;
freq_separator += pulse[ringpos++];