Add a non-invasive API for application level manipulation of T38 on a channel. This uses control frames (so they can even pass across IAX2) to negotiate T38 and provided a way of getting the current status of T38 using queryoption. This should by no means cause any issues and if it does I will take responsibility for it.

(closes issue #11873)
Reported by: dimas
Patches:
      v4-t38-api.patch uploaded by dimas (license 88)


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@103799 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 19 insertions, 0 deletions

diff --git a/main/frame.c b/main/frame.c
index ff182cc05..304bd2716 100644
--- a/main/frame.c
+++ b/main/frame.c
@@ -710,6 +710,7 @@ void ast_frame_dump(const char *name, struct ast_frame *f, char *prefix)
 	char cn[60];
 	char cp[40];
 	char cmn[40];
+	const char *message = "Unknown";
 
 	if (!name)
 		name = noname;
@@ -786,6 +787,24 @@ void ast_frame_dump(const char *name, struct ast_frame *f, char *prefix)
 		case AST_CONTROL_UNHOLD:
 			strcpy(subclass, "Unhold");
 			break;
+		case AST_CONTROL_T38:
+			if (f->datalen != sizeof(enum ast_control_t38)) {
+				message = "Invalid";
+			} else {
+				enum ast_control_t38 state = *((enum ast_control_t38 *) f->data);
+				if (state == AST_T38_REQUEST_NEGOTIATE)
+					message = "Negotiation Requested";
+				else if (state == AST_T38_REQUEST_TERMINATE)
+					message = "Negotiation Request Terminated";
+				else if (state == AST_T38_NEGOTIATED)
+					message = "Negotiated";
+				else if (state == AST_T38_TERMINATED)
+					message = "Terminated";
+				else if (state == AST_T38_REFUSED)
+					message = "Refused";
+			}
+			snprintf(subclass, sizeof(subclass), "T38/%s", message);
+			break;
 		case -1:
 			strcpy(subclass, "Stop generators");
 			break;