diff options
Diffstat (limited to 'src/libfsk/fsk.h')
| -rw-r--r-- | src/libfsk/fsk.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/libfsk/fsk.h b/src/libfsk/fsk.h index cb62170..da67f46 100644 --- a/src/libfsk/fsk.h +++ b/src/libfsk/fsk.h @@ -6,8 +6,10 @@ typedef struct fsk_mod { void *inst; int (*send_bit)(void *inst); - double bits_per_sample; /* fraction of a bit per sample */ + double bits65536_per_sample; /* fraction of a bit per sample */ double *sin_tab; /* sine table with correct peak level */ + double *phase_tab_0_1; /* cosine shaped phase table (bit 0 to 1) */ + double *phase_tab_1_0; /* cosine shaped phase table (bit 1 to 0) */ double phaseshift65536[2]; /* how much the phase of fsk synbol changes per sample */ double cycles_per_bit65536[2]; /* cycles of one bit */ double tx_phase65536; /* current transmit phase */ @@ -17,9 +19,9 @@ typedef struct fsk_mod { double f1_deviation; int low_bit, high_bit; /* a low or high deviation means which bit? */ int tx_bit; /* current transmitting bit (-1 if not set) */ - double tx_bitpos; /* current transmit position in bit */ + int tx_last_bit; /* last transmitting bit (-1 if not set) */ + double tx_bitpos65536; /* current transmit position in bit */ int filter; /* set, if filters are used */ - iir_filter_t lp[2]; /* filter to smooth transmission spectrum */ } fsk_mod_t; typedef struct fsk_demod { @@ -39,7 +41,7 @@ typedef struct fsk_demod { int fsk_mod_init(fsk_mod_t *fsk, void *inst, int (*send_bit)(void *inst), int samplerate, double bitrate, double f0, double f1, double level, int coherent, int filter); void fsk_mod_cleanup(fsk_mod_t *fsk); int fsk_mod_send(fsk_mod_t *fsk, sample_t *sample, int length, int add); -void fsk_mod_tx_reset(fsk_mod_t *fsk); +void fsk_mod_reset(fsk_mod_t *fsk); int fsk_demod_init(fsk_demod_t *fsk, void *inst, void (*receive_bit)(void *inst, int bit, double quality, double level), int samplerate, double bitrate, double f0, double f1, double bitadjust); void fsk_demod_cleanup(fsk_demod_t *fsk); void fsk_demod_receive(fsk_demod_t *fsk, sample_t *sample, int length); |