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Merged revisions 277247 via svnmerge from

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https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r277247 | mnicholson | 2010-07-16 12:29:57 -0500 (Fri, 16 Jul 2010) | 4 lines
  
  For pass through DTMF tones, measure the actual duration between the begin and end packets on the wire.  If it is detected to be less than AST_MIN_DTMF_DURATION, trigger dtmf emulation.
  
  AST-362
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@277250 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthew Nicholson
2010-07-16 17:30:39 +00:00
parent 8eb9e0b938
commit d787ccff35
1 changed files with 13 additions and 0 deletions
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13
main/channel.c
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@@ -3849,6 +3849,19 @@ static struct ast_frame *__ast_read(struct ast_channel *chan, int dropaudio)
ast_clear_flag(chan, AST_FLAG_IN_DTMF);
if (!f->len)
f->len = ast_tvdiff_ms(now, chan->dtmf_tv);
/* detect tones that were received on
* the wire with durations shorter than
* AST_MIN_DTMF_DURATION and set f->len
* to the actual duration of the DTMF
* frames on the wire. This will cause
* dtmf emulation to be triggered later
* on.
*/
if (ast_tvdiff_ms(now, chan->dtmf_tv) < AST_MIN_DTMF_DURATION) {
f->len = ast_tvdiff_ms(now, chan->dtmf_tv);
ast_log(LOG_DTMF, "DTMF end '%c' detected to have actual duration %ld on the wire, emulation will be triggered on %s\n", f->subclass, f->len, chan->name);
}
} else if (!f->len) {
ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass.integer, chan->name);
f->len = AST_MIN_DTMF_DURATION;