From dd7b672830cdf030422258bf382af7402fe309ac Mon Sep 17 00:00:00 2001
From: Xavier Claessens <xavier.claessens@collabora.com>
Date: Thu, 29 Oct 2020 13:43:16 -0400
Subject: [PATCH] amc: Fix crash when encoding AVC

gstamcvideoenc.c calls gst_amc_avc_profile_to_string() with alternatives
set to NULL which causes a crash.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1732>
---
 sys/androidmedia/gstamc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/androidmedia/gstamc.c b/sys/androidmedia/gstamc.c
index 82760469e0..527446a5fa 100644
--- a/sys/androidmedia/gstamc.c
+++ b/sys/androidmedia/gstamc.c
@@ -1197,7 +1197,8 @@ gst_amc_avc_profile_to_string (gint profile, const gchar ** alternative)
 
   for (i = 0; i < G_N_ELEMENTS (avc_profile_mapping_table); i++) {
     if (avc_profile_mapping_table[i].id == profile) {
-      *alternative = avc_profile_mapping_table[i].alt_str;
+      if (alternative != NULL)
+        *alternative = avc_profile_mapping_table[i].alt_str;
       return avc_profile_mapping_table[i].str;
     }
   }