From b00afb7734d75d4e625db0263548fa15b9aa0af7 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Wed, 9 Feb 2011 14:34:15 +0200
Subject: [PATCH] dfsound: backport fixes from pcsxr

shalma:
- Align start addresses to 16-bytes
- (Hopkat) registers.c - External loop address align to 16 bytes
- SoundOff prevents new channel from starting
- fixes Jungle Book (buzzing loop hangs)
---
 plugins/dfsound/registers.c | 17 +++++++++++++++--
 plugins/dfsound/spu.c       |  7 ++++---
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/plugins/dfsound/registers.c b/plugins/dfsound/registers.c
index b684914f..5ab519b8 100644
--- a/plugins/dfsound/registers.c
+++ b/plugins/dfsound/registers.c
@@ -70,7 +70,8 @@ void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val)
        break;
      //------------------------------------------------// start
      case 6:      
-       s_chan[ch].pStart=spuMemC+((unsigned long) val<<3);
+       // Brain Dead 13 - align to 16 boundary
+       s_chan[ch].pStart= spuMemC+(unsigned long)((val<<3)&~0xf);
        break;
      //------------------------------------------------// level with pre-calcs
      case 8:
@@ -162,7 +163,7 @@ void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val)
      //------------------------------------------------//
      case 14:                                          // loop?
        //WaitForSingleObject(s_chan[ch].hMutex,2000);        // -> no multithread fuckups
-       s_chan[ch].pLoop=spuMemC+((unsigned long) val<<3);
+       s_chan[ch].pLoop=spuMemC+((unsigned long)((val<<3)&~0xf));
        s_chan[ch].bIgnoreLoop=1;
        //ReleaseMutex(s_chan[ch].hMutex);                    // -> oki, on with the thread
        break;
@@ -424,6 +425,13 @@ void SoundOn(int start,int end,unsigned short val)     // SOUND ON PSX COMAND
     {
      s_chan[ch].bIgnoreLoop=0;
      s_chan[ch].bNew=1;
+
+     // do this here, not in StartSound
+     // - fixes fussy timing issues
+     s_chan[ch].bStop=0;
+     s_chan[ch].bOn=1;
+     s_chan[ch].pCurr=s_chan[ch].pStart;
+
      dwNewChannel|=(1<<ch);                            // bitfield for faster testing
     }
   }
@@ -441,6 +449,11 @@ void SoundOff(int start,int end,unsigned short val)    // SOUND OFF PSX COMMAND
    if(val&1)                                           // && s_chan[i].bOn)  mmm...
     {
      s_chan[ch].bStop=1;
+
+     // Jungle Book - Rhythm 'n Groove
+     // - turns off buzzing sound (loop hangs)
+     s_chan[ch].bNew=0;
+     dwNewChannel &= ~(1<<ch);
     }                                                  
   }
 }
diff --git a/plugins/dfsound/spu.c b/plugins/dfsound/spu.c
index 7e6cfb2b..8936e45b 100644
--- a/plugins/dfsound/spu.c
+++ b/plugins/dfsound/spu.c
@@ -245,15 +245,16 @@ INLINE void StartSound(int ch)
  StartADSR(ch);
  StartREVERB(ch);
 
- s_chan[ch].pCurr=s_chan[ch].pStart;                   // set sample start
+ // fussy timing issues - do in VoiceOn
+ //s_chan[ch].pCurr=s_chan[ch].pStart;                   // set sample start
+ //s_chan[ch].bStop=0;
+ //s_chan[ch].bOn=1;
 
  s_chan[ch].s_1=0;                                     // init mixing vars
  s_chan[ch].s_2=0;
  s_chan[ch].iSBPos=28;
 
  s_chan[ch].bNew=0;                                    // init channel flags
- s_chan[ch].bStop=0;
- s_chan[ch].bOn=1;
 
  s_chan[ch].SB[29]=0;                                  // init our interpolation helpers
  s_chan[ch].SB[30]=0;
-- 
2.39.2