williamp/osmocom-analog
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common: Add pre and de emphasis, if the radio does not support it

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Connect to the oscillator of the transmitter - good girl!
You need to enable pre emphasis in this case.

Connect to the discriminator of the receiver - good boy!
You need to enable de emphasis in this case.
This commit is contained in:
Andreas Eversberg
2016-04-23 18:50:11 +02:00
parent 5062628e52
commit 4356c93afa
20 changed files with 256 additions and 19 deletions
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4
src/bnetz/bnetz.c
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@@ -242,7 +242,7 @@ static void bnetz_timeout(struct timer *timer);
static void bnetz_go_idle(bnetz_t *bnetz);
/* Create transceiver instance and link to a list. */
int bnetz_create(const char *sounddev, int samplerate, const char *write_wave, const char *read_wave, int kanal, int gfs, int loopback, double loss_factor, const char *pilot)
int bnetz_create(const char *sounddev, int samplerate, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, int kanal, int gfs, int loopback, double loss_factor, const char *pilot)
{
bnetz_t *bnetz;
int use_pilot_tone = -1;
@@ -300,7 +300,7 @@ error_pilot:
PDEBUG(DBNETZ, DEBUG_DEBUG, "Creating 'B-Netz' instance for 'Kanal' = %d 'Gruppenfreisignal' = %d (sample rate %d).\n", kanal, gfs, samplerate);
/* init general part of transceiver */
rc = sender_create(&bnetz->sender, sounddev, samplerate, write_wave, read_wave, kanal, loopback, loss_factor, use_pilot_tone);
rc = sender_create(&bnetz->sender, sounddev, samplerate, pre_emphasis, de_emphasis, write_wave, read_wave, kanal, loopback, loss_factor, use_pilot_tone);
if (rc < 0) {
PDEBUG(DBNETZ, DEBUG_ERROR, "Failed to init transceiver process!\n");
goto error;