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AMPS: Add option to be more tollerant to sync detection

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Also it detects more false syncs, but this is ignored if decoding fails.
This commit is contained in:
Andreas Eversberg
2016-10-29 09:15:00 +02:00
parent 42ddd3320e
commit bb92a1f3b0
5 changed files with 41 additions and 10 deletions
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3
src/amps/amps.h
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@@ -77,6 +77,7 @@ typedef struct amps {
double fsk_rx_elapsed; /* bit duration since last level change */
enum fsk_rx_sync fsk_rx_sync; /* sync state */
uint16_t fsk_rx_sync_register; /* shift register to detect sync word */
int fsk_rx_sync_tolerant; /* be more tolerant to sync */
/* the dotting buffer stores the elapsed samples, so we can calculate
* an average time of zero-crossings during dotting sequence.
* this buffer wrapps every 256 values */
@@ -160,7 +161,7 @@ const char *amps_min12number(uint32_t min1);
void amps_number2min(const char *number, uint32_t *min1, uint16_t *min2);
const char *amps_min2number(uint32_t min1, uint16_t min2);
const char *amps_scm(uint8_t scm);
int amps_create(int channel, enum amps_chan_type chan_type, 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, amps_si *si, uint16_t sid, uint8_t sat, int polarity, int loopback);
int amps_create(int channel, enum amps_chan_type chan_type, 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, amps_si *si, uint16_t sid, uint8_t sat, int polarity, int tolerant, int loopback);
void amps_destroy(sender_t *sender);
void amps_rx_signaling_tone(amps_t *amps, int tone, double quality);
void amps_rx_sat(amps_t *amps, int tone, double quality);