diff options
Diffstat (limited to 'main')
| -rw-r--r-- | main/tdd.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/main/tdd.c b/main/tdd.c index c8eb93edd..0d1f7fdce 100644 --- a/main/tdd.c +++ b/main/tdd.c @@ -261,6 +261,18 @@ static inline float tdd_getcarrier(float *cr, float *ci, int bit) PUT_TDD_STOP; /* Stop bit */ \ } while(0); +/*! Generate TDD hold tone */ +int tdd_gen_holdtone(unsigned char *buf) +{ + int bytes=0; + float scont=0.0,cr=1.0,ci=0.0; + while(scont < tddsb*10.0) { + PUT_AUDIO_SAMPLE(tdd_getcarrier(&cr, &ci, 1)); + scont += 1.0; + } + return bytes; +} + int tdd_generate(struct tdd_state *tdd, unsigned char *buf, const char *str) { int bytes=0; |