From 57821cade40eaa99b4dc4e14679f00ed6e3ca575 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 19 Aug 2024 13:11:27 +0300
Subject: [PATCH] ndisrc: Only calculate timecode/timestamp mappings if
 necessary

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1727>
---
 net/ndi/src/ndisrc/imp.rs | 38 ++++++++++++++++++++++++++------------
 1 file changed, 26 insertions(+), 12 deletions(-)

diff --git a/net/ndi/src/ndisrc/imp.rs b/net/ndi/src/ndisrc/imp.rs
index 6f3fdbfa1..e53ec768b 100644
--- a/net/ndi/src/ndisrc/imp.rs
+++ b/net/ndi/src/ndisrc/imp.rs
@@ -651,19 +651,33 @@ impl NdiSrc {
             receive_time_real,
         );
 
-        let res_timestamp = state.observations_timestamp[idx].process(
-            self.obj().upcast_ref(),
-            timestamp,
-            receive_time_gst,
-            duration,
-        );
+        let res_timestamp = if matches!(
+            state.timestamp_mode,
+            TimestampMode::ReceiveTimeTimestamp | TimestampMode::Auto
+        ) {
+            state.observations_timestamp[idx].process(
+                self.obj().upcast_ref(),
+                timestamp,
+                receive_time_gst,
+                duration,
+            )
+        } else {
+            None
+        };
 
-        let res_timecode = state.observations_timecode[idx].process(
-            self.obj().upcast_ref(),
-            Some(timecode),
-            receive_time_gst,
-            duration,
-        );
+        let res_timecode = if matches!(
+            state.timestamp_mode,
+            TimestampMode::ReceiveTimeTimecode | TimestampMode::Auto
+        ) {
+            state.observations_timecode[idx].process(
+                self.obj().upcast_ref(),
+                Some(timecode),
+                receive_time_gst,
+                duration,
+            )
+        } else {
+            None
+        };
 
         let (pts, duration, discont) = match state.timestamp_mode {
             TimestampMode::ReceiveTimeTimecode => match res_timecode {