From 426de8d8429333fcb69d0911e615110458da2d9e Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Tue, 11 Jul 2023 16:01:10 +0200
Subject: [PATCH] DeckLink disp.: fixed audio wrap-around

---
 src/video_display/decklink.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/video_display/decklink.cpp b/src/video_display/decklink.cpp
index 31636fc41..4643ec30f 100644
--- a/src/video_display/decklink.cpp
+++ b/src/video_display/decklink.cpp
@@ -1525,7 +1525,9 @@ static void schedule_audio(struct state_decklink *s,
         if (s->first_vid_frame_ts == -1) {
                         return;
         }
-        /// @todo WIP wraparound
+        if (frame->timestamp < s->first_vid_frame_ts) { // wrap-around
+                s->first_vid_frame_ts -= 1LLU<<32;
+        }
         BMDTimeValue streamTime =
             ((int64_t)frame->timestamp - s->first_vid_frame_ts) *
             bmdAudioSampleRate48kHz / 90000;