From c8df37e89ef7fb8096fe48911b138669b474faa1 Mon Sep 17 00:00:00 2001
From: ns6089 <61738816+ns6089@users.noreply.github.com>
Date: Sun, 14 May 2023 11:33:51 +0300
Subject: [PATCH] Compensate for choreographer vsync offset

---
 .../binding/video/MediaCodecDecoderRenderer.java      | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/com/limelight/binding/video/MediaCodecDecoderRenderer.java b/app/src/main/java/com/limelight/binding/video/MediaCodecDecoderRenderer.java
index 74e47f50..035c9e70 100644
--- a/app/src/main/java/com/limelight/binding/video/MediaCodecDecoderRenderer.java
+++ b/app/src/main/java/com/limelight/binding/video/MediaCodecDecoderRenderer.java
@@ -20,6 +20,7 @@ import com.limelight.nvstream.jni.MoonBridge;
 import com.limelight.preferences.PreferenceConfiguration;
 
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.content.Context;
 import android.media.MediaCodec;
 import android.media.MediaCodecInfo;
@@ -57,6 +58,7 @@ public class MediaCodecDecoderRenderer extends VideoDecoderRenderer implements C
     private ByteBuffer nextInputBuffer;
 
     private Context context;
+    private Activity activity;
     private MediaCodec videoDecoder;
     private Thread rendererThread;
     private boolean needsSpsBitstreamFixup, isExynos4;
@@ -233,13 +235,14 @@ public class MediaCodecDecoderRenderer extends VideoDecoderRenderer implements C
         this.renderTarget = renderTarget;
     }
 
-    public MediaCodecDecoderRenderer(Context context, PreferenceConfiguration prefs,
+    public MediaCodecDecoderRenderer(Activity activity, PreferenceConfiguration prefs,
                                      CrashListener crashListener, int consecutiveCrashCount,
                                      boolean meteredData, boolean requestedHdr,
                                      String glRenderer, PerfOverlayListener perfListener) {
         //dumpDecoders();
 
-        this.context = context;
+        this.context = activity;
+        this.activity = activity;
         this.prefs = prefs;
         this.crashListener = crashListener;
         this.consecutiveCrashCount = consecutiveCrashCount;
@@ -871,6 +874,10 @@ public class MediaCodecDecoderRenderer extends VideoDecoderRenderer implements C
             return;
         }
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            frameTimeNanos -= activity.getWindowManager().getDefaultDisplay().getAppVsyncOffsetNanos();
+        }
+
         // Don't render unless a new frame is due. This prevents microstutter when streaming
         // at a frame rate that doesn't match the display (such as 60 FPS on 120 Hz).
         long actualFrameTimeDeltaNs = frameTimeNanos - lastRenderedFrameTimeNanos;