diff options
Diffstat (limited to 'util/spkmodem_recv')
| -rw-r--r-- | util/spkmodem_recv/spkmodem-recv.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/util/spkmodem_recv/spkmodem-recv.c b/util/spkmodem_recv/spkmodem-recv.c index e141caa4..58275979 100644 --- a/util/spkmodem_recv/spkmodem-recv.c +++ b/util/spkmodem_recv/spkmodem-recv.c @@ -41,6 +41,8 @@ struct decoder_state { unsigned char pulse[MAX_SAMPLES]; int ringpos; + int sep_pos; + int freq_data; int freq_separator; int sample_count; @@ -89,6 +91,9 @@ main(int argc, char **argv) memset(&st, 0, sizeof(st)); st.ascii_bit = 7; + st.ringpos = 0; + st.sep_pos = SAMPLES_PER_FRAME; + argv0 = argv[0]; while (1) { @@ -140,15 +145,10 @@ static void decode_pulse(struct decoder_state *st) { size_t n; - int next; - - next = st->ringpos + SAMPLES_PER_FRAME; - if (next >= MAX_SAMPLES) - next -= MAX_SAMPLES; st->freq_data -= st->pulse[st->ringpos]; - st->freq_data += st->pulse[next]; - st->freq_separator -= st->pulse[next]; + st->freq_data += st->pulse[st->sep_pos]; + st->freq_separator -= st->pulse[st->sep_pos]; n = fread(&st->frame[st->ringpos], sizeof(st->frame[0]), 1, stdin); if (n != 1) { @@ -166,6 +166,10 @@ decode_pulse(struct decoder_state *st) if (st->ringpos >= MAX_SAMPLES) st->ringpos = 0; + st->sep_pos++; + if (st->sep_pos >= MAX_SAMPLES) + st->sep_pos = 0; + st->sample_count++; } |