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Merge the changes from the /team/group/vldtmf_fixup branch.

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The main bug being addressed here is a problem introduced when two SIP
channels using SIP INFO dtmf have their media directly bridged.  So, when a
DTMF END frame comes into Asterisk from an incoming INFO message, Asterisk
would try to emulate a digit of some length by first sending a DTMF BEGIN
frame and sending a DTMF END later timed off of incoming audio.  However,
since there was no audio coming in, the DTMF_END was never generated.  This
caused DTMF based features to no longer work.

To fix this, the core now knows when a channel doesn't care about DTMF BEGIN
frames (such as a SIP channel sending INFO dtmf).  If this is the case, then
Asterisk will not emulate a digit of some length, and will instead just pass
through the single DTMF END event.

Channel drivers also now get passed the length of the digit to their digit_end
callback.  This improves SIP INFO support even further by enabling us to put
the real digit duration in the INFO message instead of a hard coded 250ms.
Also, for an incoming INFO message, the duration is read from the frame and
passed into the core instead of just getting ignored.

(issue #8597, maybe others...)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@51311 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2007-01-19 17:49:38 +00:00
parent 879a71e921
commit 33235b40d6
18 changed files with 200 additions and 109 deletions
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2
channels/chan_misdn.c
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@@ -2068,7 +2068,7 @@ static int misdn_digit_begin(struct ast_channel *chan, char digit)
return 0;
}
static int misdn_digit_end(struct ast_channel *ast, char digit )
static int misdn_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
{
struct chan_list *p;