From abba98ed83f59263c4b952d61ce9892f9270ee67 Mon Sep 17 00:00:00 2001
From: Takamichi Horikawa <takamichiho@gmail.com>
Date: Wed, 27 Sep 2017 23:16:40 +0900
Subject: pmd: fixed adpcm/ppz8 ssg new envelope overflow

---
 fmdriver/fmdriver_pmd.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

(limited to 'fmdriver/fmdriver_pmd.c')

diff --git a/fmdriver/fmdriver_pmd.c b/fmdriver/fmdriver_pmd.c
index a3a50c3..f4eaab7 100644
--- a/fmdriver/fmdriver_pmd.c
+++ b/fmdriver/fmdriver_pmd.c
@@ -1650,13 +1650,14 @@ static void pmd_adpcm_vol_out(
         vol = 0;
         // -> 053f
       } else {
-        vol = (vol * (envvol+1)) >> 3;
-        if (vol & 1) {
-          vol >>= 1;
-          vol++;
+        int ivol = (vol * (envvol+1)) >> 3;
+        if (ivol & 1) {
+          ivol >>= 1;
+          ivol++;
         } else {
-          vol >>= 1;
+          ivol >>= 1;
         }
+        vol = ivol;
       }
     } else {
       // 04e8
@@ -1711,13 +1712,14 @@ static void pmd_ppz8_vol_out(
         vol = 0;
         // -> 0bd4
       } else {
-        vol = (vol * (envvol+1)) >> 3;
-        if (vol & 1) {
-          vol >>= 1;
-          vol++;
+        int ivol = (vol * (envvol+1)) >> 3;
+        if (ivol & 1) {
+          ivol >>= 1;
+          ivol++;
         } else {
-          vol >>= 1;
+          ivol >>= 1;
         }
+        vol = ivol;
       }
     } else {
       // 0b7d
-- 
cgit v1.2.3