From 1b5ff6e306d04f925f419ae9a17f518662361720 Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Mon, 10 Jan 2022 10:31:01 -0500
Subject: [PATCH] TT#14008 handle zero clock rate payload types

Specially handle zero clock rate when synthesising payload types as a
zero clock rate would have its default clock rate inserted, subsequently
messing up the clock rate tracking.

Change-Id: I8335377da5c5734d28d231c20302df2d74a15e9b
---
 daemon/codec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/daemon/codec.c b/daemon/codec.c
index ec7970614..0dc101fd5 100644
--- a/daemon/codec.c
+++ b/daemon/codec.c
@@ -2135,6 +2135,8 @@ static int __codec_synth_transcode_options(struct rtp_payload_type *pt, struct s
 		struct rtp_payload_type *pt_r = k->data;
 		if (g_hash_table_lookup(clockrates, GUINT_TO_POINTER(pt_r->clock_rate)))
 			continue;
+		if (pt_r->clock_rate == 0)
+			continue;
 		char *pt_s;
 		if (asprintf(&pt_s, STR_FORMAT "/%u", STR_FMT(&pt->encoding), pt_r->clock_rate) < 0)
 			continue;