diff options
Diffstat (limited to 'util/spkmodem_recv/spkmodem-recv.c')
| -rw-r--r-- | util/spkmodem_recv/spkmodem-recv.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/util/spkmodem_recv/spkmodem-recv.c b/util/spkmodem_recv/spkmodem-recv.c index 1dcf5f18..93afd95a 100644 --- a/util/spkmodem_recv/spkmodem-recv.c +++ b/util/spkmodem_recv/spkmodem-recv.c @@ -21,6 +21,7 @@ #define DEBUG 0 #define FLUSH_TIMEOUT 1 +#define ERR() (errno = errno ? errno : ECANCELED) signed short frame[2 * SAMPLES_PER_FRAME]; signed short pulse[2 * SAMPLES_PER_FRAME]; @@ -30,6 +31,7 @@ char ascii = 0; void handle_audio(void); void print_char(void); void fetch_sample(void); +void read_frame(int ringpos); int main(int argc, char *argv[]) @@ -94,9 +96,7 @@ fetch_sample(void) f1 -= pulse[ringpos]; f1 += pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)]; f2 -= pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)]; - if (fread(frame + ringpos, 1, sizeof(frame[0]), stdin) - != sizeof(frame[0])) - err(errno = ECANCELED, "Could not read frame."); + read_frame(ringpos); pulse[ringpos] = (abs(frame[ringpos]) > THRESHOLD) ? 1 : 0; if (pulse[ringpos++]) @@ -106,6 +106,16 @@ fetch_sample(void) } void +read_frame(int ringpos) +{ + if (fread(frame + ringpos, 1, sizeof(frame[0]), stdin) + != sizeof(frame[0])) + err(ERR(), "Could not read from frame."); + if (ferror(stdin) != 0) + err(ERR(), "Could not read from frame"); +} + +void print_char(void) { #if DEBUG |