Added ability to change CD audio volume in config

lib/ZuluSCSI_platform_RP2040/audio.cpp

@@ -142,8 +142,8 @@ static audio_status_code audio_last_status[8] = {ASC_NO_STATUS};
 
 // volume information for targets
 static volatile uint16_t volumes[8] = {
-    DEFAULT_VOLUME_LEVEL, DEFAULT_VOLUME_LEVEL, DEFAULT_VOLUME_LEVEL, DEFAULT_VOLUME_LEVEL,
-    DEFAULT_VOLUME_LEVEL, DEFAULT_VOLUME_LEVEL, DEFAULT_VOLUME_LEVEL, DEFAULT_VOLUME_LEVEL
+    DEFAULT_VOLUME_LEVEL_2CH, DEFAULT_VOLUME_LEVEL_2CH, DEFAULT_VOLUME_LEVEL_2CH, DEFAULT_VOLUME_LEVEL_2CH,
+    DEFAULT_VOLUME_LEVEL_2CH, DEFAULT_VOLUME_LEVEL_2CH, DEFAULT_VOLUME_LEVEL_2CH, DEFAULT_VOLUME_LEVEL_2CH
 };
 static volatile uint16_t channels[8] = {
     AUDIO_CHANNEL_ENABLE_MASK, AUDIO_CHANNEL_ENABLE_MASK, AUDIO_CHANNEL_ENABLE_MASK, AUDIO_CHANNEL_ENABLE_MASK,

src/ZuluSCSI_audio.h

@@ -33,7 +33,9 @@
  * This implementation uses the high byte for output port 1 and the low byte
  * for port 0. The two values are averaged to determine final volume level.
  */
-#define DEFAULT_VOLUME_LEVEL 0x3F3F
+#define DEFAULT_VOLUME_LEVEL 0x3F
+#define DEFAULT_VOLUME_LEVEL_2CH DEFAULT_VOLUME_LEVEL << 8 | DEFAULT_VOLUME_LEVEL
+
 /*
  * Defines the 'enable' masks for the two audio output ports of each device.
  * If this mask is matched with audio_get_channel() the relevant port will

src/ZuluSCSI_disk.cpp

@@ -30,6 +30,9 @@
 #include "ZuluSCSI_log.h"
 #include "ZuluSCSI_config.h"
 #include "ZuluSCSI_presets.h"
+#ifdef ENABLE_AUDIO_OUTPUT
+#include "ZuluSCSI_audio.h"
+#endif
 #include "ZuluSCSI_cdrom.h"
 #include "ImageBackingStore.h"
 #include "ROMDrive.h"
@@ -572,6 +575,11 @@ static void scsiDiskLoadConfig(int target_idx, const char *section)
     img.reinsert_on_inquiry = ini_getbool(section, "ReinsertCDOnInquiry", img.reinsert_on_inquiry, CONFIGFILE);
     img.reinsert_after_eject = ini_getbool(section, "ReinsertAfterEject", img.reinsert_after_eject, CONFIGFILE);
     img.ejectButton = ini_getl(section, "EjectButton", 0, CONFIGFILE);
+#ifdef ENABLE_AUDIO_OUTPUT
+    uint16_t vol = ini_getl(section, "CDAVolume", DEFAULT_VOLUME_LEVEL, CONFIGFILE) & 0xFF;
+    // Set volume on both channels
+    audio_set_volume(target_idx, (vol << 8) | vol);
+#endif
 
     char tmp[32];
     memset(tmp, 0, sizeof(tmp));