From 8d30079033e1849f58379a59f02d0d53fe6cceec Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Mon, 16 Oct 2023 18:05:42 -0500
Subject: [PATCH] Prevent flooding the queue with motion events

---
 src/InputStream.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/InputStream.c b/src/InputStream.c
index 9853d9f..ac20802 100644
--- a/src/InputStream.c
+++ b/src/InputStream.c
@@ -1444,6 +1444,13 @@ int LiSendControllerMotionEvent(uint8_t controllerNumber, uint8_t motionType, fl
         return LI_ERR_UNSUPPORTED;
     }
 
+    // Since these events can be sent incredibly frequently, let's avoid queuing more if
+    // we already have more than half of our max input queue full of other events.
+    if (LbqGetItemCount(&packetQueue) > MAX_QUEUED_INPUT_PACKETS / 2) {
+        Limelog("Dropping motion event due to high input queue length\n");
+        return -1;
+    }
+
     // Sunshine supports up to 16 controllers
     controllerNumber %= MAX_GAMEPADS;