[FFmpeg-devel] [PR] lavu: monotonic av_gettime_relative for msvc (PR #21447)

[wangbin via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

PR #21447 opened by wangbin
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21447
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21447.patch


>From 5f366b54fa29456142748d1fd1c465c6149012a0 Mon Sep 17 00:00:00 2001
From: wangbin <wbsecg1@gmail.com>
Date: Tue, 13 Jan 2026 20:21:09 +0800
Subject: [PATCH] lavu: monotonic av_gettime_relative for msvc

---
 libavutil/time.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavutil/time.c b/libavutil/time.c
index 740afc4785..5856158b43 100644
--- a/libavutil/time.c
+++ b/libavutil/time.c
@@ -64,6 +64,12 @@ int64_t av_gettime_relative(void)
         clock_gettime(CLOCK_MONOTONIC, &ts);
         return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
     }
+#elif defined(_WIN32)
+    LARGE_INTEGER freq;
+    LARGE_INTEGER counter;
+    QueryPerformanceFrequency(&freq);
+    QueryPerformanceCounter(&counter);
+    return counter.QuadPart * 1000000 / freq.QuadPart;
 #endif
     return av_gettime() + 42 * 60 * 60 * INT64_C(1000000);
 }
@@ -76,6 +82,8 @@ int av_gettime_relative_is_monotonic(void)
         return 0;
 #endif
     return 1;
+#elif defined(_WIN32)
+    return 1;
 #else
     return 0;
 #endif
-- 
2.49.1

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