From 3dc590ec1a33912e8c7425b553b8fe6306ce4279 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?William=20B=C3=A9rub=C3=A9?= <wberube@null.net>
Date: Wed, 10 Jul 2024 09:08:22 -0400
Subject: [PATCH] Fixing the RTSP DESCRIBE message when no audio is present

---
 src/hal/types.h | 3 ++-
 src/rtsp/rtsp.c | 4 ++--
 src/rtsp/rtsp.h | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/hal/types.h b/src/hal/types.h
index 6c4badb..de46462 100644
--- a/src/hal/types.h
+++ b/src/hal/types.h
@@ -35,7 +35,8 @@ typedef enum {
 
 typedef enum {
     HAL_AUDCODEC_UNSPEC,
-    HAL_AUDCODEC_MP3 = 0x69
+    HAL_AUDCODEC_MP3 = 0x69,
+    HAL_AUDCODEC_NONE = 0xFF
 } hal_audcodec;
 
 typedef enum {
diff --git a/src/rtsp/rtsp.c b/src/rtsp/rtsp.c
index 4db997b..5e15989 100644
--- a/src/rtsp/rtsp.c
+++ b/src/rtsp/rtsp.c
@@ -263,7 +263,7 @@ static void __method_describe(struct connection_item_t *p, rtsp_handle h)
     char audioRtp[256] = "\r\n";
     char audioRtpfmt[16];
 
-    if (h->audioPt) {
+    if (h->audioPt != 255) {
         switch (h->audioPt) {
             case 0:
                 sprintf(audioRtpfmt, "PCMU");
@@ -911,7 +911,7 @@ rtsp_handle rtsp_create(unsigned char max_con, int priority)
 
     TALLOC(nh,return NULL);
 
-    nh->audioPt = -1;
+    nh->audioPt = 255;
     nh->max_con = max_con;
     nh->priority = priority;
 
diff --git a/src/rtsp/rtsp.h b/src/rtsp/rtsp.h
index 228d51d..ac688d3 100644
--- a/src/rtsp/rtsp.h
+++ b/src/rtsp/rtsp.h
@@ -125,7 +125,7 @@ struct __rtsp_obj_t {
     unsigned short  port;
     struct __time_stat_t stat;
     char isH265;
-    char audioPt;
+    unsigned char audioPt;
     mime_encoded_handle sprop_vps_b64;
     mime_encoded_handle sprop_sps_b64;
     mime_encoded_handle sprop_pps_b64;