Revert "Revert "AGI: Only defer frames when in an interception routine.""

This reverts commit 7155020c96.

Change-Id: I4e1681d2ca8bf36eda849f129bc0dcbc39ef5bc6

main/channel.c

@@ -1557,10 +1557,6 @@ int ast_safe_sleep_conditional(struct ast_channel *chan, int timeout_ms, int (*c
 	ast_channel_start_defer_frames(chan, 0);
 	ast_channel_unlock(chan);
 
-	ast_channel_lock(chan);
-	ast_channel_start_defer_frames(chan);
-	ast_channel_unlock(chan);
-
 	start = ast_tvnow();
 	while ((ms = ast_remaining_ms(start, timeout_ms))) {
 		if (cond && ((*cond)(data) == 0)) {
@@ -10293,6 +10289,11 @@ int ast_channel_connected_line_macro(struct ast_channel *autoservice_chan, struc
 	ast_channel_unlock(macro_chan);
 
 	retval = ast_app_run_macro(autoservice_chan, macro_chan, macro, macro_args);
+
+	ast_channel_lock(macro_chan);
+	ast_channel_stop_defer_frames(macro_chan);
+	ast_channel_unlock(macro_chan);
+
 	if (!retval) {
 		struct ast_party_connected_line saved_connected;
 
@@ -10344,6 +10345,11 @@ int ast_channel_redirecting_macro(struct ast_channel *autoservice_chan, struct a
 	ast_channel_unlock(macro_chan);
 
 	retval = ast_app_run_macro(autoservice_chan, macro_chan, macro, macro_args);
+
+	ast_channel_lock(macro_chan);
+	ast_channel_stop_defer_frames(macro_chan);
+	ast_channel_unlock(macro_chan);
+
 	if (!retval) {
 		struct ast_party_redirecting saved_redirecting;
 
@@ -10388,6 +10394,11 @@ int ast_channel_connected_line_sub(struct ast_channel *autoservice_chan, struct
 	ast_channel_unlock(sub_chan);
 
 	retval = ast_app_run_sub(autoservice_chan, sub_chan, sub, sub_args, 0);
+
+	ast_channel_lock(sub_chan);
+	ast_channel_stop_defer_frames(sub_chan);
+	ast_channel_unlock(sub_chan);
+
 	if (!retval) {
 		struct ast_party_connected_line saved_connected;
 
@@ -10432,6 +10443,11 @@ int ast_channel_redirecting_sub(struct ast_channel *autoservice_chan, struct ast
 	ast_channel_unlock(sub_chan);
 
 	retval = ast_app_run_sub(autoservice_chan, sub_chan, sub, sub_args, 0);
+
+	ast_channel_lock(sub_chan);
+	ast_channel_stop_defer_frames(sub_chan);
+	ast_channel_unlock(sub_chan);
+
 	if (!retval) {
 		struct ast_party_redirecting saved_redirecting;
 

res/res_agi.c

@@ -4093,23 +4093,6 @@ static enum agi_result agi_handle_command(struct ast_channel *chan, AGI *agi, ch
 	return AGI_RESULT_SUCCESS;
 }
 
-AST_LIST_HEAD_NOLOCK(deferred_frames, ast_frame);
-
-static void queue_deferred_frames(struct deferred_frames *deferred_frames,
-	struct ast_channel *chan)
-{
-	struct ast_frame *f;
-
-	if (!AST_LIST_EMPTY(deferred_frames)) {
-		ast_channel_lock(chan);
-		while ((f = AST_LIST_REMOVE_HEAD(deferred_frames, frame_list))) {
-			ast_queue_frame_head(chan, f);
-			ast_frfree(f);
-		}
-		ast_channel_unlock(chan);
-	}
-}
-
 static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi, int pid, int *status, int dead, int argc, char *argv[])
 {
 	struct ast_channel *c;
@@ -4128,9 +4111,6 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
 	const char *sighup_str;
 	const char *exit_on_hangup_str;
 	int exit_on_hangup;
-	struct deferred_frames deferred_frames;
-
-	AST_LIST_HEAD_INIT_NOLOCK(&deferred_frames);
 
 	ast_channel_lock(chan);
 	sighup_str = pbx_builtin_getvar_helper(chan, "AGISIGHUP");
@@ -4192,20 +4172,8 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
 					/* Write, ignoring errors */
 					if (write(agi->audio, f->data.ptr, f->datalen) < 0) {
 					}
-					ast_frfree(f);
-				} else if (ast_is_deferrable_frame(f)) {
-					struct ast_frame *dup_f;
-
-					if ((dup_f = ast_frisolate(f))) {
-						AST_LIST_INSERT_HEAD(&deferred_frames, dup_f, frame_list);
-					}
-
-					if (dup_f != f) {
-						ast_frfree(f);
-					}
-				} else {
-					ast_frfree(f);
 				}
+				ast_frfree(f);
 			}
 		} else if (outfd > -1) {
 			size_t len = sizeof(buf);
@@ -4253,8 +4221,6 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
 				buf[buflen - 1] = '\0';
 			}
 
-			queue_deferred_frames(&deferred_frames, chan);
-
 			if (agidebug)
 				ast_verbose("<%s>AGI Rx << %s\n", ast_channel_name(chan), buf);
 			cmd_status = agi_handle_command(chan, agi, buf, dead);
@@ -4277,8 +4243,6 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
 		}
 	}
 
-	queue_deferred_frames(&deferred_frames, chan);
-
 	if (agi->speech) {
 		ast_speech_destroy(agi->speech);
 	}