CD-ROM CUE indexes are now respected for skip even if prestart is 0 (fixes CUE+BIN images that use indexes for pregap), CD Audio attenuation is now done per the specification, and proper sound card filtering and volume calculation now applies to CD Audio.

src/include/86box/snd_ad1848.h

@@ -14,7 +14,9 @@ typedef struct ad1848_t
         int count;
         
         int16_t out_l, out_r;
-                
+
+	uint32_t cd_vol_l, cd_vol_r;
+
         int enable;
 
         int irq, dma;

src/include/86box/sound.h

@@ -45,6 +45,8 @@ extern int	sound_card_current;
 
 extern void	sound_add_handler(void (*get_buffer)(int32_t *buffer, \
 				  int len, void *p), void *p);
+extern void	sound_set_cd_audio_filter(void (*filter)(int channel, \
+					  float *buffer, void *p), void *p);
 
 extern int	sound_card_available(int card);
 extern char	*sound_card_getname(int card);