zcpset:noopStereo
	a pset:Preset;
	lv2:appliesTo <http://gareus.org/oss/lv2/@LV2NAME@#Stereo>;

	rdfs:label "No-OP Stereo";
	rdfs:comment "A No-OP 2in, 2out test impulse response: delta-spike followed by 63 zeroes. left -> left, right -> right mapping no left/right crossover.";
	state:state [

		# Impulse response file, needs to be readable by libsndfile, prefer flac files
		# Channels mapping as follows:
		# - Mono (1 in, 1 out):
		#    always use first channel only
		# - MonoToStereo (1 in, 2 out):
		#    mono-file: use only channel for both M -> L, M -> R
		#    else: use first two channels
		# - Stereo (2 in, 2 out):
		#    mono-file: use 1st for both L -> L, R -> R, no x-over
		#    stereo-file: L -> L, R -> R  -- no L/R, R/L x-over
		#    3chan-file: ignore 3rd channel, use as stereo-file.
		#    4chan file:  L -> L, L -> R, R -> L, R -> R
		#
		# Additional channels in the file are ignored.
		# Note that if the plugin host's sample-rate mismatches, the file is resampled.
		<http://gareus.org/oss/lv2/zeroconvolv#ir> <ir/delta-48k.wav>;

		# pre-delay, additional silence added at the beginning before the IR.
		# The value's unit is samples at sample-rate of the IR file.
		<http://gareus.org/oss/lv2/zeroconvolv#predelay> "0"^^xsd:int;

		# artificial latency, extra latency reported to the host. This is useful
		# when using FIR filters that otherwise introduce a delay.
		# Conceptually this is like negative pre-delay.
		# The unit is samples at sample-rate of the IR file.
		<http://gareus.org/oss/lv2/zeroconvolv#artificial_latency> "0"^^xsd:int;

		# Gain to apply for all channels of the IR file.
		# gain-coefficient: 0.0 =  silence, 1.0 =  unity-gain,
		# negative values invert the polarity
		<http://gareus.org/oss/lv2/zeroconvolv#gain> "1.0"^^xsd:float;

		# Downmix stereo input (equal amplitude sum).
		# Only useful with the true-stereo (2 in, 2 out) variant.
		<http://gareus.org/oss/lv2/zeroconvolv#sum_inputs> false;

		# per IR file channel pre-delay, added to zeroconvolv#predelay
		<http://gareus.org/oss/lv2/zeroconvolv#channel_predelay> [
			a atom:Vector;
			atom:childType atom:Int;
			rdf:value (
				"0"^^xsd:int
				"0"^^xsd:int
				"0"^^xsd:int
				"0"^^xsd:int
			)
		];

		# per IR channel gain, multiplied with zeroconvolv#gain
		<http://gareus.org/oss/lv2/zeroconvolv#channel_gain> [
			a atom:Vector;
			atom:childType atom:Float;
			rdf:value (
				"1.0"^^xsd:float
				"1.0"^^xsd:float
				"1.0"^^xsd:float
				"1.0"^^xsd:float
			)
		];
	].