AD1848: Make CD audio input designated per-card

Fixes CD audio mixer not working for GUS MAX

src/include/86box/snd_ad1848.h

@@ -32,6 +32,14 @@ enum {
     AD1848_TYPE_CS4235  = 6
 };
 
+enum {
+    AD1848_AUX1    = 2,
+    AD1848_AUX2    = 4,
+    AD1848_OUT     = 6,
+    AD1848_LINE_IN = 18,
+    AD1848_MONO    = 26
+};
+
 typedef struct ad1848_t {
     uint8_t type;
     uint8_t index;
@@ -47,6 +55,7 @@ typedef struct ad1848_t {
 
     int16_t out_l;
     int16_t out_r;
+    int8_t  cd_vol_reg;
     double  cd_vol_l;
     double  cd_vol_r;
     int     fm_vol_l;
@@ -86,6 +95,7 @@ extern void    ad1848_write(uint16_t addr, uint8_t val, void *priv);
 
 extern void ad1848_update(ad1848_t *ad1848);
 extern void ad1848_speed_changed(ad1848_t *ad1848);
+extern void ad1848_set_cd_audio_channel(void *priv, int channel);
 extern void ad1848_filter_cd_audio(int channel, double *buffer, void *priv);
 extern void ad1848_filter_aux2(void* priv, double* out_l, double* out_r);
 

src/sound/snd_ad1848.c

@@ -501,16 +501,16 @@ readonly_x:
             if (updatefreq)
                 ad1848_updatefreq(ad1848);
 
-            temp = (ad1848->type < AD1848_TYPE_CS4231) ? 2 : ((ad1848->type == AD1848_TYPE_CS4231) ? 18 : 4);
-            if (ad1848->regs[temp] & 0x80)
-                ad1848->cd_vol_l = 0;
-            else
-                ad1848->cd_vol_l = ad1848_vols_5bits_aux_gain[ad1848->regs[temp] & 0x1f];
-            temp++;
-            if (ad1848->regs[temp] & 0x80)
-                ad1848->cd_vol_r = 0;
-            else
-                ad1848->cd_vol_r = ad1848_vols_5bits_aux_gain[ad1848->regs[temp] & 0x1f];
+            if (ad1848->cd_vol_reg > -1) {
+                if (ad1848->regs[ad1848->cd_vol_reg] & 0x80)
+                    ad1848->cd_vol_l = 0;
+                else
+                    ad1848->cd_vol_l = ad1848_vols_5bits_aux_gain[ad1848->regs[ad1848->cd_vol_reg] & 0x1f];
+                if (ad1848->regs[ad1848->cd_vol_reg + 1] & 0x80)
+                    ad1848->cd_vol_r = 0;
+                else
+                    ad1848->cd_vol_r = ad1848_vols_5bits_aux_gain[ad1848->regs[ad1848->cd_vol_reg + 1] & 0x1f];
+            }
 
 readonly_i:
             ad1848_log("AD1848: write(I%d, %02X)\n", ad1848->index, val);
@@ -746,6 +746,18 @@ ad1848_poll(void *priv)
     }
 }
 
+void
+ad1848_set_cd_audio_channel(void *priv, int channel)
+{
+    ad1848_t *ad1848 = (ad1848_t *) priv;
+
+    const int max_channel = (ad1848->type >= AD1848_TYPE_CS4231) ? 31 : 15;
+    if (channel > max_channel)
+        channel = max_channel;
+
+    ad1848->cd_vol_reg = channel;
+}
+
 void
 ad1848_filter_cd_audio(int channel, double *buffer, void *priv)
 {
@@ -837,6 +849,8 @@ ad1848_init(ad1848_t *ad1848, uint8_t type)
 
     ad1848->out_l = ad1848->out_r = 0;
     ad1848->fm_vol_l = ad1848->fm_vol_r = 65536;
+    ad1848->cd_vol_l = ad1848->cd_vol_r = 65536;
+    ad1848->cd_vol_reg = -1;
     ad1848_updatevolmask(ad1848);
     if (type >= AD1848_TYPE_CS4235)
         ad1848->fmt_mask = 0x50;

src/sound/snd_azt2316a.c

@@ -1211,6 +1211,7 @@ azt_init(const device_t *info)
 
     /* wss part */
     ad1848_init(&azt2316a->ad1848, device_get_config_int("codec"));
+    ad1848_set_cd_audio_channel(&azt2316a->ad1848, (device_get_config_int("codec") == AD1848_TYPE_CS4248) ? AD1848_AUX1 : AD1848_LINE_IN);
 
     ad1848_setirq(&azt2316a->ad1848, azt2316a->cur_wss_irq);
     ad1848_setdma(&azt2316a->ad1848, azt2316a->cur_wss_dma);

src/sound/snd_cs423x.c

@@ -273,8 +273,10 @@ cs423x_write(uint16_t addr, uint8_t val, void *priv)
             }
             switch (dev->regs[3] & 0x0f) {
                 case 0: /* WSS Master Control */
-                    if ((dev->type < CRYSTAL_CS4235) && (val & 0x80))
+                    if ((dev->type < CRYSTAL_CS4235) && (val & 0x80)) {
                         ad1848_init(&dev->ad1848, dev->ad1848_type);
+                        ad1848_set_cd_audio_channel(&dev->ad1848, AD1848_AUX2);
+                    }
                     val = 0x00;
                     break;
 
@@ -865,6 +867,7 @@ cs423x_reset(void *priv)
 
     /* Reset WSS codec. */
     ad1848_init(&dev->ad1848, dev->ad1848_type);
+    ad1848_set_cd_audio_channel(&dev->ad1848, AD1848_AUX2);
 
     /* Reset PnP resource data, state and logical devices. */
     dev->pnp_enable = 1;

src/sound/snd_gus.c

@@ -1569,6 +1569,7 @@ gus_init(UNUSED(const device_t *info))
 
     if (gus->type == GUS_MAX) {
         ad1848_init(&gus->ad1848, AD1848_TYPE_CS4231);
+        ad1848_set_cd_audio_channel(&gus->ad1848, AD1848_AUX2);
         ad1848_setirq(&gus->ad1848, 5);
         ad1848_setdma(&gus->ad1848, 3);
         io_sethandler(0x10C + gus->base, 4,

src/sound/snd_optimc.c

@@ -380,6 +380,7 @@ optimc_init(const device_t *info)
     else
         ad1848_init(&optimc->ad1848, AD1848_TYPE_DEFAULT);
 
+    ad1848_set_cd_audio_channel(&optimc->ad1848, (info->local & 0x100) ? AD1848_LINE_IN : AD1848_AUX1);
     ad1848_setirq(&optimc->ad1848, optimc->cur_wss_irq);
     ad1848_setdma(&optimc->ad1848, optimc->cur_wss_dma);