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//proc/thread-self/root/proc/self/root/usr/share/alsa/pcm/dsnoop.conf

#
# dsnoop
#

pcm.!dsnoop {
	@args [ CARD DEV SUBDEV FORMAT RATE ]
	@args.CARD {
		type string
		default {
			@func refer
			name defaults.pcm.dsnoop.card
		}
	}
	@args.DEV {
		type integer
		default {
			@func refer
			name defaults.pcm.dsnoop.device
		}
	}
	@args.SUBDEV {
		type integer
		default 0
	}
	@args.FORMAT {
		type string
		default {
			@func refer
			name defaults.pcm.dmix.format
		}
	}
	@args.RATE {
		type integer
		default {
			@func refer
			name defaults.pcm.dmix.rate
		}
	}
	type dsnoop
	ipc_key {
		@func refer
		name defaults.pcm.ipc_key
	}	
	ipc_gid {
		@func refer
		name defaults.pcm.ipc_gid
	}
	ipc_perm {
		@func refer
		name defaults.pcm.ipc_perm
	}
	slave {
		pcm {
			type hw
			card $CARD
			device $DEV
			subdevice $SUBDEV
		}
		format $FORMAT
		rate $RATE
		period_size {
			@func refer
			name {
				@func concat
				strings [
					"cards."
					{
						@func card_driver
						card $CARD
					}
					".pcm.dsnoop.period_size"
				]
			}
			default 1024
		}		
		period_time {
			@func refer
			name {
				@func concat
				strings [
					"cards."
					{
						@func card_driver
						card $CARD
					}
					".pcm.dsnoop.period_time"
				]
			}
			default -1
		}		
		periods {
			@func refer
			name {
				@func concat
				strings [
					"cards."
					{
						@func card_driver
						card $CARD
					}
					".pcm.dsnoop.periods"
				]
			}
			default 16
		}
	}
	hint {
		show {
			@func refer
			name defaults.namehint.extended
		}
		description "Direct sample snooping device"
		device_input $DEV
	}
}