Commit f608a0bb8d for ffmpeg

commit f608a0bb8d905cef65de6732fc4bdec2eab1fb9f
Author: Ramiro Polla <ramiro.polla@gmail.com>
Date:   Wed Nov 4 19:26:51 2026 +0100

    swscale/utils: keep float gray formats full range in sws_setColorspaceDetails()

    sws_init_context() treats float gray formats as full range, but a later
    call to sws_setColorspaceDetails() could set them to limited range,
    enabling range conversion on float values. Force them to full range
    there as well, as is already done with a fixed range for RGB formats.

    Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
    Signed-off-by: Ramiro Polla <ramiro.polla@gmail.com>

diff --git a/libswscale/utils.c b/libswscale/utils.c
index 2361bb94c0..eaa352a30c 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -919,8 +919,12 @@ int sws_setColorspaceDetails(SwsContext *sws, const int inv_table[4],

     if(range_override_needed(sws->dst_format))
         dstRange = 0;
+    else if (isFloat(sws->dst_format))
+        dstRange = 1; /* float gray formats are always full range */
     if(range_override_needed(sws->src_format))
         srcRange = 0;
+    else if (isFloat(sws->src_format))
+        srcRange = 1;

     if (sws->src_range != srcRange ||
         sws->dst_range != dstRange ||