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Add more support for native bridging.

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* Added a start technology callback that technologies can use to start
bridging operations.  It is expected that native bridges will find this
useful.

* Factored out bridge_channel_complete_join().


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@390991 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2013-06-08 06:31:50 +00:00
parent c88b7945f6
commit 2fe6b6a533
2 changed files with 75 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
include/asterisk/bridging_technology.h
View File

@@ -62,6 +62,16 @@ struct ast_bridge_technology {
* However, it can be accessed as if it were locked.
*/
int (*create)(struct ast_bridge *bridge);
/*!
* \brief Request a bridge technology instance start operations.
*
* \retval 0 on success
* \retval -1 on failure
*
* \note On entry, bridge may or may not already be locked.
* However, it can be accessed as if it were locked.
*/
int (*start)(struct ast_bridge *bridge);
/*!
* \brief Request a bridge technology instance stop in preparation for being destroyed.
*
@@ -106,6 +116,9 @@ struct ast_bridge_technology {
*
* \retval 0 if not compatible
* \retval non-zero if compatible
*
* \note On entry, bridge may or may not already be locked.
* However, it can be accessed as if it were locked.
*/
int (*compatible)(struct ast_bridge *bridge);
/*!

104
main/bridging.c
View File

@@ -1093,6 +1093,39 @@ static void bridge_handle_trip(struct ast_bridge_channel *bridge_channel)
ast_frfree(frame);
}
/*!
* \internal
* \brief Complete joining a channel to the bridge.
* \since 12.0.0
*
* \param bridge What to operate upon.
* \param bridge_channel What is joining the bridge technology.
*
* \note On entry, bridge is already locked.
*
* \return Nothing
*/
static void bridge_channel_complete_join(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel)
{
/* Make the channel compatible with the bridge */
bridge_make_compatible(bridge, bridge_channel);
/* Tell the bridge technology we are joining so they set us up */
ast_debug(1, "Bridge %s: %p(%s) is joining %s technology\n",
bridge->uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
bridge->technology->name);
if (bridge->technology->join
&& bridge->technology->join(bridge, bridge_channel)) {
ast_debug(1, "Bridge %s: %p(%s) failed to join %s technology\n",
bridge->uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
bridge->technology->name);
bridge_channel->just_joined = 1;
return;
}
bridge_channel->just_joined = 0;
}
/*!
* \internal
* \brief Complete joining new channels to the bridge.
@@ -1123,22 +1156,7 @@ static void bridge_complete_join(struct ast_bridge *bridge)
if (!bridge_channel->just_joined) {
continue;
}
/* Make the channel compatible with the bridge */
bridge_make_compatible(bridge, bridge_channel);
/* Tell the bridge technology we are joining so they set us up */
ast_debug(1, "Bridge %s: %p(%s) is joining %s technology\n",
bridge->uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
bridge->technology->name);
if (bridge->technology->join
&& bridge->technology->join(bridge, bridge_channel)) {
ast_debug(1, "Bridge %s: %p(%s) failed to join %s technology\n",
bridge->uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
bridge->technology->name);
}
bridge_channel->just_joined = 0;
bridge_channel_complete_join(bridge, bridge_channel);
}
}
@@ -1414,6 +1432,14 @@ struct ast_bridge *ast_bridge_base_init(struct ast_bridge *self, uint32_t capabi
ao2_ref(self, -1);
return NULL;
}
ast_debug(1, "Bridge %s: calling %s technology start\n",
self->uniqueid, self->technology->name);
if (self->technology->start && self->technology->start(self)) {
ast_debug(1, "Bridge %s: failed to start %s technology\n",
self->uniqueid, self->technology->name);
ao2_ref(self, -1);
return NULL;
}
if (!ast_bridge_topic(self)) {
ao2_ref(self, -1);
@@ -1756,36 +1782,30 @@ static int smart_bridge_operation(struct ast_bridge *bridge)
old_technology->stop(&dummy_bridge);
}
/* Move existing channels over to the new technology. */
/*
* Move existing channels over to the new technology and
* complete joining any new channels to the bridge.
*/
AST_LIST_TRAVERSE(&bridge->channels, bridge_channel, entry) {
if (bridge_channel->just_joined) {
/*
* This channel has not completed joining the bridge so it is
* not in the old bridge technology.
*/
continue;
if (!bridge_channel->just_joined) {
/* Take existing channel from the old technology. */
ast_debug(1, "Bridge %s: %p(%s) is leaving %s technology (dummy)\n",
dummy_bridge.uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
old_technology->name);
if (old_technology->leave) {
old_technology->leave(&dummy_bridge, bridge_channel);
}
}
/* First we part them from the old technology */
ast_debug(1, "Bridge %s: %p(%s) is leaving %s technology (dummy)\n",
dummy_bridge.uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
old_technology->name);
if (old_technology->leave) {
old_technology->leave(&dummy_bridge, bridge_channel);
}
/* Add any new channels or re-add an existing channel to the bridge. */
bridge_channel_complete_join(bridge, bridge_channel);
}
/* Second we make them compatible again with the bridge */
bridge_make_compatible(bridge, bridge_channel);
/* Third we join them to the new technology */
ast_debug(1, "Bridge %s: %p(%s) is joining %s technology\n",
bridge->uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
new_technology->name);
if (new_technology->join && new_technology->join(bridge, bridge_channel)) {
ast_debug(1, "Bridge %s: %p(%s) failed to join %s technology\n",
bridge->uniqueid, bridge_channel, ast_channel_name(bridge_channel->chan),
new_technology->name);
}
ast_debug(1, "Bridge %s: calling %s technology start\n",
bridge->uniqueid, new_technology->name);
if (new_technology->start && new_technology->start(bridge)) {
ast_log(LOG_WARNING, "Bridge %s: failed to start bridge technology %s\n",
bridge->uniqueid, new_technology->name);
}
/*