From a6b323fdc085bdc5034b4cd5658cf952f7da5df2 Mon Sep 17 00:00:00 2001
From: ProjectRevoTPP <projectrevotpp@hotmail.com>
Date: Sat, 14 Sep 2024 20:36:59 -0400
Subject: [PATCH] n_synstopvoice

---
 linker_scripts/us/symbol_addrs_code.txt |  2 +-
 src/46680.c                             |  2 --
 src/libnaudio/n_synstopvoice.c          | 46 +++++++++++++++++++++++++
 yamls/us/rom.yaml                       |  1 +
 4 files changed, 48 insertions(+), 3 deletions(-)
 create mode 100644 src/libnaudio/n_synstopvoice.c

diff --git a/linker_scripts/us/symbol_addrs_code.txt b/linker_scripts/us/symbol_addrs_code.txt
index 879801d..701ab8c 100644
--- a/linker_scripts/us/symbol_addrs_code.txt
+++ b/linker_scripts/us/symbol_addrs_code.txt
@@ -1363,7 +1363,7 @@ func_80045A80 = 0x80045A80; // type:func
 func_80045C78 = 0x80045C78; // type:func
 func_80045D60 = 0x80045D60; // type:func
 func_80045FF0 = 0x80045FF0; // type:func
-func_80046EF0 = 0x80046EF0; // type:func
+n_alSynStopVoice = 0x80046EF0; // type:func
 n_alEnvmixerPull = 0x80046F60; // type:func
 n_alEnvmixerParam = 0x80047500; // type:func
 func_800475A4 = 0x800475A4; // type:func
diff --git a/src/46680.c b/src/46680.c
index b9961ba..47c0d4c 100644
--- a/src/46680.c
+++ b/src/46680.c
@@ -7,5 +7,3 @@
 #pragma GLOBAL_ASM("asm/us/nonmatchings/46680/func_80045D60.s")
 
 #pragma GLOBAL_ASM("asm/us/nonmatchings/46680/func_80045FF0.s")
-
-#pragma GLOBAL_ASM("asm/us/nonmatchings/46680/func_80046EF0.s")
diff --git a/src/libnaudio/n_synstopvoice.c b/src/libnaudio/n_synstopvoice.c
new file mode 100644
index 0000000..0a626d4
--- /dev/null
+++ b/src/libnaudio/n_synstopvoice.c
@@ -0,0 +1,46 @@
+/*====================================================================
+ *
+ * Copyright 1993, Silicon Graphics, Inc.
+ * All Rights Reserved.
+ *
+ * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics,
+ * Inc.; the contents of this file may not be disclosed to third
+ * parties, copied or duplicated in any form, in whole or in part,
+ * without the prior written permission of Silicon Graphics, Inc.
+ *
+ * RESTRICTED RIGHTS LEGEND:
+ * Use, duplication or disclosure by the Government is subject to
+ * restrictions as set forth in subdivision (c)(1)(ii) of the Rights
+ * in Technical Data and Computer Software clause at DFARS
+ * 252.227-7013, and/or in similar or successor clauses in the FAR,
+ * DOD or NASA FAR Supplement. Unpublished - rights reserved under the
+ * Copyright Laws of the United States.
+ *====================================================================*/
+
+#include <os_internal.h>
+#include <ultraerror.h>
+#include "n_synthInternals.h"
+
+
+void n_alSynStopVoice(N_ALVoice *v)
+{
+    ALParam  *update;
+    ALFilter *f;
+    
+    if (v->pvoice) {
+        
+        update = __n_allocParam();
+        ALFailIf(update == 0, ERR_ALSYN_NO_UPDATE);
+
+#ifdef SAMPLE_ROUND
+	update->delta  = SAMPLE184( n_syn->paramSamples + v->pvoice->offset);
+#else
+        update->delta  = n_syn->paramSamples + v->pvoice->offset;
+#endif
+        update->type   = AL_FILTER_STOP_VOICE;
+        update->next   = 0;
+
+	n_alEnvmixerParam(v->pvoice, AL_FILTER_ADD_UPDATE, update);        
+    }
+}
+
diff --git a/yamls/us/rom.yaml b/yamls/us/rom.yaml
index d8bda82..33196b1 100644
--- a/yamls/us/rom.yaml
+++ b/yamls/us/rom.yaml
@@ -88,6 +88,7 @@
     - [0x435D0, c]  # pkm lab cries code
     - [0x45720, c]  # music code
     - [0x46680, c]  # speech code
+    - [0x47AF0, c, libnaudio/n_synstopvoice]
     - [0x47B60, c]  # sound code
     - [0x485C0, c]  # moves code 
     - [0x48C60, c]  # move effects code