williamp/osmocom-analog
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

C-Netz: Simplifying TX signal clock sync between two channels

Browse Source
This commit is contained in:
Andreas Eversberg
2016-11-30 18:09:38 +01:00
parent 0b43b63d1f
commit e34d74aa23
3 changed files with 30 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/cnetz/cnetz.h
View File

@@ -96,12 +96,14 @@ typedef struct cnetz {
int fsk_tx_buffer_pos; /* current position sending buffer */
double fsk_tx_bitstep; /* fraction of a bit each sample */
double fsk_tx_phase; /* current bit position */
uint64_t fsk_tx_scount; /* sample counter (used to sync multiple channels) */
int scrambler; /* 0 = normal speech, 1 = scrambled speech */
int16_t *dsp_speech_buffer; /* samples in one chunk */
int dsp_speech_length; /* number of samples */
int dsp_speech_pos; /* current position in buffer */
int frame_last_count; /* master's count position of last frame sync */
/* sync multiple channels on one sound card */
uint64_t frame_last_scount; /* master's sample count of last frame sync */
double frame_last_phase; /* master's bit phase of last frame sync */
/* audio offset removal */