When MOH is playing on the channel, announcements sent through the conference are not heard.

(closes issue #14588)
 Reported by: voipas
 Patches: 
       20090716__issue14588__2.diff.txt uploaded by tilghman (license 14)
 Tested by: lmadsen, twisted, tilghman


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@217156 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -1504,7 +1504,7 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 	int res;
 	int retryzap;
 	int origfd;
-	int musiconhold = 0;
+	int musiconhold = 0, mohtempstopped = 0;
 	int firstpass = 0;
 	int lastmarked = 0;
 	int currentmarked = 0;
@@ -1530,6 +1530,7 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 	char __buf[CONF_SIZE + AST_FRIENDLY_OFFSET];
 	char *buf = __buf + AST_FRIENDLY_OFFSET;
 	int setusercount = 0;
+	int confsilence = 0, totalsilence = 0;
 
 	if (!(user = ast_calloc(1, sizeof(*user))))
 		return ret;
@@ -1835,6 +1836,11 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 
 	conf_flush(fd, chan);
 
+	if (!(dsp = ast_dsp_new())) {
+		ast_log(LOG_WARNING, "Unable to allocate DSP!\n");
+		res = -1;
+	}
+
 	if (confflags & CONFFLAG_AGI) {
 		/* Get name of AGI file to run from $(MEETME_AGI_BACKGROUND)
 		   or use default filename of conf-background.agi */
@@ -1868,10 +1874,6 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 			x = 1;
 			ast_channel_setoption(chan, AST_OPTION_TONE_VERIFY, &x, sizeof(char), 0);
 		}	
-		if (confflags & (CONFFLAG_MONITORTALKER | CONFFLAG_OPTIMIZETALKER) && !(dsp = ast_dsp_new())) {
-			ast_log(LOG_WARNING, "Unable to allocate DSP!\n");
-			res = -1;
-		}
 		for(;;) {
 			int menu_was_active = 0;
 
@@ -2065,8 +2067,6 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 						ast_frame_adjust_volume(f, user->talk.actual);
 
 					if (confflags & (CONFFLAG_MONITORTALKER | CONFFLAG_OPTIMIZETALKER)) {
-						int totalsilence;
-
 						if (user->talking == -1)
 							user->talking = 0;
 
@@ -2262,8 +2262,9 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 							}
 						}
 					}
-					if (musiconhold)
+					if (musiconhold) {
 			   			ast_moh_start(chan, NULL, NULL);
+					}
 
 					if (ioctl(fd, DAHDI_SETCONF, &ztc)) {
 						ast_log(LOG_WARNING, "Error setting conference\n");
@@ -2338,10 +2339,14 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 							}
 						}
 						if (conf->transframe[index]) {
- 							if ((conf->transframe[index]->frametype != AST_FRAME_NULL) &&
+							if ((conf->transframe[index]->frametype != AST_FRAME_NULL) &&
 							    can_write(chan, confflags)) {
 								struct ast_frame *cur;
-								
+								if (musiconhold && !ast_dsp_silence(dsp, conf->transframe[index], &confsilence) && confsilence < MEETME_DELAYDETECTTALK) {
+									ast_moh_stop(chan);
+									mohtempstopped = 1;
+								}
+
 								/* the translator may have returned a list of frames, so
 								   write each one onto the channel
 								*/
@@ -2351,6 +2356,10 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 										break;
 									}
 								}
+								if (musiconhold && mohtempstopped && confsilence > MEETME_DELAYDETECTENDTALK) {
+									mohtempstopped = 0;
+									ast_moh_start(chan, NULL, NULL);
+								}
 							}
 						} else {
 							ast_mutex_unlock(&conf->listenlock);
@@ -2358,12 +2367,20 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 						}
 						ast_mutex_unlock(&conf->listenlock);
 					} else {
-bailoutandtrynormal:					
+bailoutandtrynormal:
+						if (musiconhold && !ast_dsp_silence(dsp, &fr, &confsilence) && confsilence < MEETME_DELAYDETECTTALK) {
+							ast_moh_stop(chan);
+							mohtempstopped = 1;
+						}
 						if (user->listen.actual)
 							ast_frame_adjust_volume(&fr, user->listen.actual);
 						if (can_write(chan, confflags) && ast_write(chan, &fr) < 0) {
 							ast_log(LOG_WARNING, "Unable to write frame to channel %s\n", chan->name);
 						}
+						if (musiconhold && mohtempstopped && confsilence > MEETME_DELAYDETECTENDTALK) {
+							mohtempstopped = 0;
+							ast_moh_start(chan, NULL, NULL);
+						}
 					}
 				} else 
 					ast_log(LOG_WARNING, "Failed to read frame: %s\n", strerror(errno));
@@ -2372,8 +2389,9 @@ bailoutandtrynormal:
 		}
 	}
 
-	if (musiconhold)
+	if (musiconhold) {
 		ast_moh_stop(chan);
+	}
 	
 	if (using_pseudo)
 		close(fd);