Don't bother having the core pass through or emulate begin DTMF frames when in an ast_waitstream. It only cares about the end of DTMF.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@78955 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/file.c

@@ -1003,6 +1003,9 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 		forward = "";
 	if (!rewind)
 		rewind = "";
+
+	/* Switch the channel to end DTMF frame only. waitstream_core doesn't care about the start of DTMF. */
+	ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
 	
 	while (c->stream) {
 		int res;
@@ -1017,6 +1020,7 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 			res = ast_waitfor(c, ms);
 			if (res < 0) {
 				ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
+				ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 				return res;
 			}
 		} else {
@@ -1027,9 +1031,11 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 				if (errno == EINTR)
 					continue;
 				ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
+				ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 				return -1;
 			} else if (outfd > -1) { /* this requires cmdfd set */
 				/* The FD we were watching has something waiting */
+				ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 				return 1;
 			}
 			/* if rchan is set, it is 'c' */
@@ -1037,8 +1043,10 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 		}
 		if (res > 0) {
 			struct ast_frame *fr = ast_read(c);
-			if (!fr)
+			if (!fr) {
+				ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 				return -1;
+			}
 			switch(fr->frametype) {
 			case AST_FRAME_DTMF_END:
 				if (context) {
@@ -1046,6 +1054,7 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 					if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
 						res = fr->subclass;
 						ast_frfree(fr);
+						ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 						return res;
 					}
 				} else {
@@ -1056,6 +1065,7 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 						ast_stream_rewind(c->stream, skip_ms);
 					} else if (strchr(breakon, res)) {
 						ast_frfree(fr);
+						ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 						return res;
 					}					
 				}
@@ -1066,6 +1076,7 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 				case AST_CONTROL_BUSY:
 				case AST_CONTROL_CONGESTION:
 					ast_frfree(fr);
+					ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
 					return -1;
 				case AST_CONTROL_RINGING:
 				case AST_CONTROL_ANSWER:
@@ -1090,6 +1101,9 @@ static int waitstream_core(struct ast_channel *c, const char *breakon,
 		}
 		ast_sched_runq(c->sched);
 	}
+
+	ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
+
 	return (c->_softhangup ? -1 : 0);
 }