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A-Netz: Keep phase for each paging tone when played in sequence

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If paging tones are played in sequence, only one tone out of four tones
is played at once. The phase of all tones are calculated as if each tone
would have been sent permanently.
This commit is contained in:
Andreas Eversberg
2016-11-13 05:51:09 +01:00
parent 3cd102c638
commit 52b1ac65f4
5 changed files with 32 additions and 22 deletions
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3
src/anetz/anetz.h
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@@ -33,6 +33,7 @@ typedef struct anetz {
int tone_count; /* how long has that tone been detected */
double tone_phaseshift256; /* how much the phase of sine wave changes per sample */
double tone_phase256; /* current phase */
int page_sequence; /* if set, use paging tones in sequence rather than parallel */
double paging_phaseshift256[4];/* how much the phase of sine wave changes per sample */
double paging_phase256[4]; /* current phase */
int paging_tone; /* current tone (0..3) in sequenced mode */
@@ -42,7 +43,7 @@ typedef struct anetz {
double anetz_kanal2freq(int kanal, int unterband);
int anetz_init(void);
int anetz_create(int kanal, const char *sounddev, int samplerate, int cross_channels, double rx_gain, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, int loopback, double loss_volume);
int anetz_create(int kanal, const char *sounddev, int samplerate, int cross_channels, double rx_gain, int page_sequence, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, int loopback, double loss_volume);
void anetz_destroy(sender_t *sender);
void anetz_loss_indication(anetz_t *anetz);
void anetz_receive_tone(anetz_t *anetz, int bit);