Commit a20ae16999 for ffmpeg

commit a20ae169999a86061d2e834d39733d20a4311bd3
Author: Niklas Haas <git@haasn.dev>
Date:   Fri Oct 9 17:52:19 2026 +0200

    swscale/format: reject XYZ<->RGB conversions

    Fixes: 2ed5830108f92093cffb696e88706f970ce6bc6b
    Signed-off-by: Niklas Haas <git@haasn.dev>

diff --git a/libswscale/format.c b/libswscale/format.c
index 5484e8180c..a6530c2cd3 100644
--- a/libswscale/format.c
+++ b/libswscale/format.c
@@ -1837,6 +1837,11 @@ int ff_sws_op_list_generate(SwsContext *ctx, const SwsFormat *src,
         ctx->alpha_blend != SWS_ALPHA_BLEND_NONE)
         return AVERROR(ENOTSUP);

+    /* XYZ<->RGB conversion requires application of a gamma function which
+     * are not currently implemented */
+    if ((src->desc->flags ^ dst->desc->flags) & AV_PIX_FMT_FLAG_XYZ)
+        return AVERROR(ENOTSUP);
+
     SwsOpList *ops = ff_sws_op_list_alloc();
     if (!ops)
         return AVERROR(ENOMEM);
diff --git a/tests/ref/fate/sws-ops-list b/tests/ref/fate/sws-ops-list
index 59913a43f1..94a583b190 100644
--- a/tests/ref/fate/sws-ops-list
+++ b/tests/ref/fate/sws-ops-list
@@ -1 +1 @@
-1f03295f230be02367e812f3670230cc
+c49b616409175c41ccc5d786c5097f96