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From: Niklas Haas <ffmpeg@haasn.xyz>
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Date: Mon, 17 Mar 2025 11:43:49 +0100
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Subject: [FFmpeg-devel] [PATCH 03/11] tests/swscale: print speedup numbers
 in color
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From: Niklas Haas <git@haasn.dev>

---
 libswscale/tests/swscale.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/libswscale/tests/swscale.c b/libswscale/tests/swscale.c
index bdfea4e761..3f140f51f7 100644
--- a/libswscale/tests/swscale.c
+++ b/libswscale/tests/swscale.c
@@ -239,10 +239,17 @@ static int run_test(enum AVPixelFormat src_fmt, enum AVPixelFormat dst_fmt,
     }
 
     if (opts.bench && time_ref) {
-        printf("  time=%"PRId64" us, ref=%"PRId64" us, speedup=%.3fx %s\n",
-                time / opts.iters, time_ref / opts.iters,
-                (double) time_ref / time,
-                time <= time_ref ? "faster" : "\033[1;33mslower\033[0m");
+        double ratio = (double) time_ref / time;
+        const char *color = ratio > 1.10 ? "\033[1;32m" : /* bold green */
+                            ratio > 1.02 ? "\033[32m"   : /* green */
+                            ratio > 0.98 ? ""           : /* default */
+                            ratio > 0.95 ? "\033[33m"   : /* yellow */
+                            ratio > 0.90 ? "\033[31m"   : /* red */
+                                           "\033[1;31m";  /* bold red */
+
+        printf("  time=%"PRId64" us, ref=%"PRId64" us, speedup=%.3fx %s%s\033[0m\n",
+               time / opts.iters, time_ref / opts.iters, ratio, color,
+               ratio >= 1.0 ? "faster" : "slower");
     } else if (opts.bench) {
         printf("  time=%"PRId64" us\n", time / opts.iters);
     }
-- 
2.48.1

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