From e5743d666c1dd90091e5b3a1d038ab48454ae64a Mon Sep 17 00:00:00 2001
From: David Reid <mackron@gmail.com>
Date: Tue, 13 Jan 2026 13:03:15 +1000
Subject: [PATCH] SDL2: Improve Emscripten support by limiting the period size.

Setting the period size to something too small results in glitching so
this commit will clamp it to a minimum size on the Emscripten build.
---
 extras/backends/sdl2/miniaudio_sdl2.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/extras/backends/sdl2/miniaudio_sdl2.c b/extras/backends/sdl2/miniaudio_sdl2.c
index a07e06d3..67df7a42 100644
--- a/extras/backends/sdl2/miniaudio_sdl2.c
+++ b/extras/backends/sdl2/miniaudio_sdl2.c
@@ -506,6 +506,18 @@ static ma_result ma_device_init_internal__sdl2(ma_device* pDevice, ma_context_st
         pDescriptor->periodSizeInFrames = ma_next_power_of_2(pDescriptor->periodSizeInFrames);
     }
 
+    /*
+    In my experience there is glitching with a period size of anything <= 512. To make this "Just Work" on
+    the Emscripten build we'll set this to 1024.
+    */
+    #if defined(__EMSCRIPTEN__)
+    {
+        if (pDescriptor->periodSizeInFrames < 1024) {
+            pDescriptor->periodSizeInFrames = 1024;
+        }
+    }
+    #endif
+
 
     /* We now have enough information to set up the device. */
     memset(&desiredSpec, 0, sizeof(desiredSpec));