From c709455e3def42b9ac14fcc2fea94fa50cab7956 Mon Sep 17 00:00:00 2001
From: Gwilym Kuiper <gw@ilym.me>
Date: Sat, 11 Jun 2022 13:19:56 +0100
Subject: [PATCH] Add defines for freq32768

---
 agb/src/sound/mixer/sw_mixer.rs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/agb/src/sound/mixer/sw_mixer.rs b/agb/src/sound/mixer/sw_mixer.rs
index f6f09f21..28f48ae1 100644
--- a/agb/src/sound/mixer/sw_mixer.rs
+++ b/agb/src/sound/mixer/sw_mixer.rs
@@ -96,9 +96,9 @@ impl Mixer {
     }
 }
 
-// I've picked one frequency that works nicely. But there are others that work nicely
-// which we may want to consider in the future: http://deku.gbadev.org/program/sound1.html
-#[cfg(not(feature = "freq18157"))]
+// These work perfectly with swapping the buffers every vblank
+// list here: http://deku.gbadev.org/program/sound1.html
+#[cfg(all(not(feature = "freq18157"), not(feature = "freq32768")))]
 mod constants {
     pub const SOUND_FREQUENCY: i32 = 10512;
     pub const SOUND_BUFFER_SIZE: usize = 176;
@@ -110,6 +110,12 @@ mod constants {
     pub const SOUND_BUFFER_SIZE: usize = 304;
 }
 
+#[cfg(feature = "freq32768")]
+mod constants {
+    pub const SOUND_FREQUENCY: i32 = 32768;
+    pub const SOUND_BUFFER_SIZE: usize = 549;
+}
+
 fn set_asm_buffer_size() {
     extern "C" {
         static mut agb_rs__buffer_size: usize;