The monitor-join option for queues was deprecated in favor of using

MixMonitor to mix audio. However, it was pointed out to me that because
of this, the command set for the MONITOR_EXEC variable is ignored as well.
This means that people can't do their own custom mixing commands at the end
of recordings in order to make, for instance, stereo recordings of calls.

With this patch, app_queue will set the "joinfiles" variable for the channel's
monitor if MONITOR_EXEC is not zero-length. This means that for normal audio
mixing, MixMonitor is still the preferred choice, but we allow custom
mixing to be done with the two Monitor streams if desired.

(closes issue #12923)
Reported by: snyfer



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@125649 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -3539,8 +3539,9 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 		/* Begin Monitoring */
 		if (qe->parent->monfmt && *qe->parent->monfmt) {
 			if (!qe->parent->montype) {
+				char *monexec, *monargs;
 				ast_debug(1, "Starting Monitor as requested.\n");
-				if (pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC") || pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC_ARGS"))
+				if ((monexec = pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC")) || (monargs = pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC_ARGS")))
 					which = qe->chan;
 				else
 					which = peer;
@@ -3553,6 +3554,9 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 					snprintf(tmpid, sizeof(tmpid), "chan-%lx", ast_random());
 					ast_monitor_start(which, qe->parent->monfmt, tmpid, 1, X_REC_IN | X_REC_OUT);
 				}
+				if (!ast_strlen_zero(monexec)) {
+					ast_monitor_setjoinfiles(which, 1);
+				}
 			} else {
 				mixmonapp = pbx_findapp("MixMonitor");