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

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: http://svn.digium.com/svn/asterisk/branches/1.4@51311 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 2 insertions, 2 deletions

diff --git a/channels/chan_skinny.c b/channels/chan_skinny.c
index 0552a5c84..9b8faf55e 100644
--- a/channels/chan_skinny.c
+++ b/channels/chan_skinny.c
@@ -1032,7 +1032,7 @@ static int skinny_write(struct ast_channel *ast, struct ast_frame *frame);
 static int skinny_indicate(struct ast_channel *ast, int ind, const void *data, size_t datalen);
 static int skinny_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
 static int skinny_senddigit_begin(struct ast_channel *ast, char digit);
-static int skinny_senddigit_end(struct ast_channel *ast, char digit);
+static int skinny_senddigit_end(struct ast_channel *ast, char digit, unsigned int duration);
 
 static const struct ast_channel_tech skinny_tech = {
 	.type = "Skinny",
@@ -2566,7 +2566,7 @@ static int skinny_senddigit_begin(struct ast_channel *ast, char digit)
 	return -1; /* Start inband indications */
 }
 
-static int skinny_senddigit_end(struct ast_channel *ast, char digit)
+static int skinny_senddigit_end(struct ast_channel *ast, char digit, unsigned int duration)
 {
 #if 0
 	struct skinny_subchannel *sub = ast->tech_pvt;