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rtl_fm: bugfixes from TonberryKing

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Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Kyle Keen 2013-01-29 23:05:09 -05:00 committed by Steve Markgraf
parent c85cab2dae
commit e8e735caf4
1 changed files with 32 additions and 14 deletions
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46
src/rtl_fm.c
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@ -672,6 +672,32 @@ void frequency_range(struct fm_state *fm, char *arg)
step[-1] = ':'; step[-1] = ':';
} }
void fm_init(struct fm_state *fm)
{
fm->freqs[0] = 100000000;
fm->sample_rate = DEFAULT_SAMPLE_RATE;
fm->squelch_level = 0;
fm->conseq_squelch = 20;
fm->terminate_on_squelch = 0;
fm->squelch_hits = 0;
fm->freq_len = 0;
fm->edge = 0;
fm->fir_enable = 0;
fm->prev_index = 0;
fm->post_downsample = 1; // once this works, default = 4
fm->custom_atan = 0;
fm->deemph = 0;
fm->output_rate = -1; // flag for disabled
fm->mode_demod = &fm_demod;
fm->pre_j = 0;
fm->pre_r = 0;
fm->now_r = 0;
fm->now_j = 0;
fm->prev_lpr_index = 0;
fm->deemph_a = 0;
fm->now_lpr = 0;
}
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
#ifndef _WIN32 #ifndef _WIN32
@ -686,20 +712,7 @@ int main(int argc, char **argv)
int device_count; int device_count;
int ppm_error = 0; int ppm_error = 0;
char vendor[256], product[256], serial[256]; char vendor[256], product[256], serial[256];
fm.freqs[0] = 100000000; fm_init(&fm);
fm.sample_rate = DEFAULT_SAMPLE_RATE;
fm.squelch_level = 0;
fm.conseq_squelch = 20;
fm.terminate_on_squelch = 0;
fm.freq_len = 0;
fm.edge = 0;
fm.fir_enable = 0;
fm.prev_index = 0;
fm.post_downsample = 1; // once this works, default = 4
fm.custom_atan = 0;
fm.deemph = 0;
fm.output_rate = -1; // flag for disabled
fm.mode_demod = &fm_demod;
sem_init(&data_ready, 0, 0); sem_init(&data_ready, 0, 0);
while ((opt = getopt(argc, argv, "d:f:g:s:b:l:o:t:r:p:EFA:NWMULRD")) != -1) { while ((opt = getopt(argc, argv, "d:f:g:s:b:l:o:t:r:p:EFA:NWMULRD")) != -1) {
@ -794,6 +807,11 @@ int main(int argc, char **argv)
/* quadruple sample_rate to limit to Δθ to ±π/2 */ /* quadruple sample_rate to limit to Δθ to ±π/2 */
fm.sample_rate *= fm.post_downsample; fm.sample_rate *= fm.post_downsample;
if (fm.freq_len == 0) {
fprintf(stderr, "Please specify a frequency.\n");
exit(1);
}
if (fm.freq_len > 1) { if (fm.freq_len > 1) {
fm.terminate_on_squelch = 0; fm.terminate_on_squelch = 0;
} }