add a "shut up" feature which kills all the active voices without otherwise interrupting the spu. handy for shutting up streaming sounds. hook it up in windows.

desmume/src/SPU.cpp

@@ -258,6 +258,11 @@ void SPU_DeInit(void)
 
 //////////////////////////////////////////////////////////////////////////////
 
+void SPU_struct::ShutUp()
+{
+	for(int i=0;i<16;i++)
+		 channels[i].status = CHANSTAT_STOPPED;
+}
 
 void SPU_struct::KeyOn(int channel)
 {

desmume/src/SPU.h

@@ -87,6 +87,9 @@ public:
    void WriteByte(u32 addr, u8 val);
    void WriteWord(u32 addr, u16 val);
    void WriteLong(u32 addr, u32 val);
+   
+   //kills all channels but leaves SPU otherwise running normally
+   void ShutUp();
 };
 
 int SPU_ChangeSoundCore(int coreid, int buffersize);
@@ -105,7 +108,7 @@ u32 SPU_ReadLong(u32 addr);
 void SPU_Emulate_core(void);
 void SPU_Emulate_user(void);
 
-extern SPU_struct *SPU_core;
+extern SPU_struct *SPU_core, *SPU_user;
 extern int spu_core_samples;
 
 void spu_savestate(std::ostream* os);

desmume/src/windows/main.cpp

@@ -2375,6 +2375,9 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 		}
 		switch(LOWORD(wParam))
 		{
+		case IDM_SHUT_UP:
+			if(SPU_user) SPU_user->ShutUp();
+			return 0;
 		case IDM_QUIT:
 			DestroyWindow(hwnd);
 			return 0;

desmume/src/windows/resource.h

@@ -412,8 +412,10 @@
 #define IDC_FRAMELIMIT                          40005
 #define IDC_WINDOW1_5X                          40006
 #define IDM_WIFISETTINGS                        40007
+#define IDM__1                                  40008
 #define ID_VIEW_FRAMECOUNTER                    40009
 #define ID_VIEW_DISPLAYFPS                      40010
+#define IDM_SHUT_UP                             40011
 #define IDM_FILE_RECORDAVI                      40015
 #define IDM_FILE_STOPAVI                        40016
 #define ACCEL_CTRL_O                            40032

desmume/src/windows/resources.rc

@@ -243,6 +243,8 @@ BEGIN
         MENUITEM "&Pause", IDM_PAUSE
         MENUITEM "&Reset", IDM_RESET
         MENUITEM SEPARATOR
+        MENUITEM "Shut Up", IDM_SHUT_UP
+        MENUITEM SEPARATOR
         MENUITEM "GBA &slot", IDM_GBASLOT
         POPUP "&Cheats"
         BEGIN