audio/adlib: remove limitation of one adlib card

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170621043401.19842-3-hpoussin@reactos.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio/rate_template.h

@@ -71,6 +71,12 @@ void NAME (void *opaque, struct st_sample *ibuf, struct st_sample *obuf,
         while (rate->ipos <= (rate->opos >> 32)) {
             ilast = *ibuf++;
             rate->ipos++;
+
+            /* if ipos overflow, there is  a infinite loop */
+            if (rate->ipos == 0xffffffff) {
+                rate->ipos = 1;
+                rate->opos = rate->opos & 0xffffffff;
+            }
             /* See if we finished the input buffer yet */
             if (ibuf >= iend) {
                 goto the_end;

hw/audio/adlib.c

@@ -74,8 +74,6 @@ typedef struct {
     PortioList port_list;
 } AdlibState;
 
-static AdlibState *glob_adlib;
-
 static void adlib_stop_opl_timer (AdlibState *s, size_t n)
 {
     OPLTimerOver (s->opl, n);
@@ -130,9 +128,9 @@ static uint32_t adlib_read(void *opaque, uint32_t nport)
     return data;
 }
 
-static void timer_handler (int c, double interval_Sec)
+static void timer_handler (void *opaque, int c, double interval_Sec)
 {
-    AdlibState *s = glob_adlib;
+    AdlibState *s = opaque;
     unsigned n = c & 1;
 #ifdef DEBUG
     double interval;
@@ -259,19 +257,13 @@ static void adlib_realizefn (DeviceState *dev, Error **errp)
     AdlibState *s = ADLIB(dev);
     struct audsettings as;
 
-    if (glob_adlib) {
-        error_setg (errp, "Cannot create more than 1 adlib device");
-        return;
-    }
-    glob_adlib = s;
-
     s->opl = OPLCreate (3579545, s->freq);
     if (!s->opl) {
         error_setg (errp, "OPLCreate %d failed", s->freq);
         return;
     }
     else {
-        OPLSetTimerHandler (s->opl, timer_handler, 0);
+        OPLSetTimerHandler(s->opl, timer_handler, s);
         s->enabled = 1;
     }
 

hw/audio/fmopl.c

@@ -788,14 +788,18 @@ static void OPLWriteReg(FM_OPL *OPL, int r, int v)
 				{
 					double interval = st2 ? (double)OPL->T[1]*OPL->TimerBase : 0.0;
 					OPL->st[1] = st2;
-					if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+1,interval);
+                    if (OPL->TimerHandler) {
+                        (OPL->TimerHandler)(OPL->TimerParam, 1, interval);
+                    }
 				}
 				/* timer 1 */
 				if(OPL->st[0] != st1)
 				{
 					double interval = st1 ? (double)OPL->T[0]*OPL->TimerBase : 0.0;
 					OPL->st[0] = st1;
-					if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+0,interval);
+                    if (OPL->TimerHandler) {
+                        (OPL->TimerHandler)(OPL->TimerParam, 0, interval);
+                    }
 				}
 			}
 			return;
@@ -1128,10 +1132,11 @@ void OPLDestroy(FM_OPL *OPL)
 
 /* ----------  Option handlers ----------       */
 
-void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset)
+void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler,
+                        void *param)
 {
 	OPL->TimerHandler   = TimerHandler;
-	OPL->TimerParam = channelOffset;
+    OPL->TimerParam = param;
 }
 
 /* ---------- YM3812 I/O interface ---------- */
@@ -1197,6 +1202,9 @@ int OPLTimerOver(FM_OPL *OPL,int c)
 		}
 	}
 	/* reload timer */
-	if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+c,(double)OPL->T[c]*OPL->TimerBase);
+    if (OPL->TimerHandler) {
+        (OPL->TimerHandler)(OPL->TimerParam, c,
+                            (double)OPL->T[c] * OPL->TimerBase);
+    }
 	return OPL->status>>7;
 }

hw/audio/fmopl.h

@@ -3,7 +3,7 @@
 
 #include <stdint.h>
 
-typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
+typedef void (*OPL_TIMERHANDLER)(void *param, int channel, double interval_Sec);
 
 /* !!!!! here is private section , do not access there member direct !!!!! */
 
@@ -87,13 +87,14 @@ typedef struct fm_opl_f {
 	uint8_t wavesel;
 	/* external event callback handler */
 	OPL_TIMERHANDLER  TimerHandler;		/* TIMER handler   */
-	int TimerParam;						/* TIMER parameter */
+    void *TimerParam; /* TIMER parameter */
 } FM_OPL;
 
 /* ---------- Generic interface section ---------- */
 FM_OPL *OPLCreate(int clock, int rate);
 void OPLDestroy(FM_OPL *OPL);
-void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset);
+void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler,
+                        void *param);
 
 int OPLWrite(FM_OPL *OPL,int a,int v);
 unsigned char OPLRead(FM_OPL *OPL,int a);