From 6599a15524ad9c41966f14f7bbf2ff556b8fd36b Mon Sep 17 00:00:00 2001
From: Floogle <18466542+skyfloogle@users.noreply.github.com>
Date: Thu, 16 Nov 2023 00:09:45 +0100
Subject: [PATCH] better timing

---
 source/common/vb_sound.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/source/common/vb_sound.c b/source/common/vb_sound.c
index e947963..c260cd1 100644
--- a/source/common/vb_sound.c
+++ b/source/common/vb_sound.c
@@ -43,8 +43,13 @@ void sound_thread() {
     int shutoff_divider = 0;
     int clk1_divider = 0;
     int envelope_divider = 0;
+    u64 lastTime = svcGetSystemTick();
     while (true) {
-        svcWaitSynchronization(nothingEvent, 960000);
+        u64 newTime = svcGetSystemTick();
+        s64 waitNanos = 960000 - 2000 * (newTime - lastTime) / CPU_TICKS_PER_USEC;
+        if (waitNanos > 0)
+            svcSleepThread(waitNanos / 2);
+        lastTime = newTime;
         // do clk0
         if (--shutoff_divider >= 0) continue;
         shutoff_divider += 4;