From d04a03d176dcd7b0650d32af843bf8cc8fc1da17 Mon Sep 17 00:00:00 2001
From: Jakub Adam <jakub.adam@collabora.com>
Date: Thu, 29 Aug 2024 20:58:04 +0200
Subject: [PATCH] kmssink: enumerate drm formats when IN_FORMATS not present

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5174>
---
 subprojects/gst-plugins-bad/sys/kms/gstkmssink.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/subprojects/gst-plugins-bad/sys/kms/gstkmssink.c b/subprojects/gst-plugins-bad/sys/kms/gstkmssink.c
index 8c40d023de..d86f11d5e4 100644
--- a/subprojects/gst-plugins-bad/sys/kms/gstkmssink.c
+++ b/subprojects/gst-plugins-bad/sys/kms/gstkmssink.c
@@ -856,6 +856,20 @@ get_all_formats_and_modifiers (GstKMSSink * self, drmModePlane * plane,
     drmModeFreePropertyBlob (blob);
   }
 
+  if (formats->len == 0) {
+    /* IN_FORMATS not found. Fill the arrays from plane->formats, assuming
+     * only linear modifier. */
+    const guint64 LINEAR_MODIFIER = DRM_FORMAT_MOD_LINEAR;
+
+    for (i = 0; i < plane->count_formats; ++i) {
+      g_array_append_val (formats, plane->formats[i]);
+      g_array_append_val (modifiers, LINEAR_MODIFIER);
+      GST_DEBUG_OBJECT (self, "Plane id %d, get format/modifier pair %"
+          GST_FOURCC_FORMAT ":0x0", plane->plane_id,
+          GST_FOURCC_ARGS (plane->formats[i]));
+    }
+  }
+
   if (formats->len == 0)
     goto out;