From 866103462037be67f3dc4af0d1a9c02bc10a37df Mon Sep 17 00:00:00 2001
From: Robert Mader <robert.mader@collabora.com>
Date: Sun, 6 Jul 2025 21:27:33 +0200
Subject: [PATCH] gst: pipewireformat: Validate fourcc before converting to
 string

gst_video_dma_drm_fourcc_to_string() asserts when called with
DRM_FORMAT_INVALID.

(cherry picked from commit 9debb4b814f2901a35ad5013dbe90ba63625a74b)
---
 src/gst/gstpipewireformat.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gst/gstpipewireformat.c b/src/gst/gstpipewireformat.c
index 903d216e2..98d5296a3 100644
--- a/src/gst/gstpipewireformat.c
+++ b/src/gst/gstpipewireformat.c
@@ -828,6 +828,8 @@ static char *video_id_to_dma_drm_fourcc(uint32_t id, uint64_t mod)
   if ((idx = find_index(video_format_map, SPA_N_ELEMENTS(video_format_map), id)) == -1)
     return NULL;
   fourcc = gst_video_dma_drm_fourcc_from_format(idx);
+  if (fourcc == DRM_FORMAT_INVALID)
+    return NULL;
   return gst_video_dma_drm_fourcc_to_string(fourcc, mod);
 }
 #endif