[Asterisk-code-review] Revert "AGI: Only defer frames when in an interception routi... (asterisk[14])

[George Joseph]

Hello Mark Michelson, Anonymous Coward #1000019, Joshua Colp,

I'd like you to do a code review.  Please visit

    https://gerrit.asterisk.org/4371

to review the following change.


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

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

This reverts commit 8d8323b1427b1abe60b4b8777dccb3a2232315e8.
Multiple testsuite failures were detected after the fact.

Change-Id: I322684ed82ba32cfce226a94fe19b87a4ec02567
---
M main/channel.c
M res/res_agi.c
2 files changed, 37 insertions(+), 25 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/71/4371/1

diff --git a/main/channel.c b/main/channel.c
index 9ac8a64..f00f222 100644
--- a/main/channel.c
+++ b/main/channel.c
@@ -10261,15 +10261,9 @@
 
 		ast_party_connected_line_copy(ast_channel_connected(macro_chan), connected);
 	}
-	ast_channel_start_defer_frames(macro_chan);
 	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;
 
@@ -10317,15 +10311,9 @@
 
 		ast_party_redirecting_copy(ast_channel_redirecting(macro_chan), redirecting);
 	}
-	ast_channel_start_defer_frames(macro_chan);
 	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;
 
@@ -10366,15 +10354,9 @@
 
 		ast_party_connected_line_copy(ast_channel_connected(sub_chan), connected);
 	}
-	ast_channel_start_defer_frames(sub_chan);
 	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;
 
@@ -10415,15 +10397,9 @@
 
 		ast_party_redirecting_copy(ast_channel_redirecting(sub_chan), redirecting);
 	}
-	ast_channel_start_defer_frames(sub_chan);
 	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;
 
diff --git a/res/res_agi.c b/res/res_agi.c
index cb23a07..e0eb8e2 100644
--- a/res/res_agi.c
+++ b/res/res_agi.c
@@ -4093,6 +4093,23 @@
 	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;
@@ -4111,6 +4128,9 @@
 	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");
@@ -4172,8 +4192,20 @@
 					/* 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);
@@ -4221,6 +4253,8 @@
 				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);
@@ -4243,6 +4277,8 @@
 		}
 	}
 
+	queue_deferred_frames(&deferred_frames, chan);
+
 	if (agi->speech) {
 		ast_speech_destroy(agi->speech);
 	}

-- 
To view, visit https://gerrit.asterisk.org/4371
To unsubscribe, visit https://gerrit.asterisk.org/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I322684ed82ba32cfce226a94fe19b87a4ec02567
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 14
Gerrit-Owner: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Anonymous Coward #1000019
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Mark Michelson <mmichelson at digium.com>