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author | oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b> | 2007-11-06 19:10:26 +0000 |
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committer | oej <oej@f38db490-d61c-443f-a65b-d21fe96a405b> | 2007-11-06 19:10:26 +0000 |
commit | beb1ba78131e9723805d6410631a3752dbe076b7 (patch) | |
tree | 0d103be965030a1cd87281a1c9f2700006e3e318 /main/tdd.c | |
parent | 6314703e326f1f20c709a890a958f07b9ee6a69c (diff) |
Additional TDD changes (preparing for SIP changes - adding TDD support to SIP)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@89048 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'main/tdd.c')
-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; |