--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/share/alsa/pcm/iec958.conf	Tue Mar 18 16:23:26 2025 -0400
@@ -0,0 +1,83 @@
+#
+#  Hardware output from iec958
+#
+
+pcm.!iec958 {
+	@args [ CARD DEV AES0 AES1 AES2 AES3 ]
+	@args.CARD {
+		type string
+		default {
+			@func getenv
+			vars [
+				ALSA_IEC958_CARD
+				ALSA_PCM_CARD
+				ALSA_CARD
+			]
+			default {
+				@func refer
+				name defaults.pcm.iec958.card
+			}
+		}
+	}
+	@args.DEV {
+		type integer
+		default {
+			@func igetenv
+			vars [
+				ALSA_IEC958_DEVICE
+			]
+			default {
+				@func refer
+				name defaults.pcm.iec958.device
+			}
+		}
+	}
+	@args.AES0 {
+		type integer
+		# consumer, not-copyright, emphasis-none, mode=0
+		default 0x04
+	}
+	@args.AES1 {
+		type integer
+		# original, PCM coder
+		default 0x82
+	}
+	@args.AES2 {
+		type integer
+		# source and channel
+		default 0x00
+	}
+	@args.AES3 {
+		type integer
+		# fs=48000Hz, clock accuracy=1000ppm
+		default 0x02
+	}
+	type empty
+	slave.pcm {
+		@func refer
+		name {
+			@func concat
+			strings [
+				"cards."
+				{
+					@func card_driver
+					card $CARD
+				}
+				".pcm.iec958." $DEV ":"
+				"CARD=" $CARD ","
+				"AES0=" $AES0 ","
+				"AES1=" $AES1 ","
+				"AES2=" $AES2 ","
+				"AES3=" $AES3
+			]
+		}
+	}
+	hint {
+		show {
+			@func refer
+			name defaults.namehint.basic
+		}
+		description "IEC958 (S/PDIF) Digital Audio Output"
+		device_output $DEV
+	}
+}