From cb939fc7f3e57b420fb17c9ca14881baebd7f73a Mon Sep 17 00:00:00 2001
From: gram <git@orsinium.dev>
Date: Thu, 11 Jun 2026 11:43:03 +0200
Subject: [PATCH] Set audio node parameters

---
 firefly/audio/bindings.go |  3 ++
 firefly/audio/nodes.go    | 73 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)

diff --git a/firefly/audio/bindings.go b/firefly/audio/bindings.go
index 72ac6a7..3759963 100644
--- a/firefly/audio/bindings.go
+++ b/firefly/audio/bindings.go
@@ -98,6 +98,9 @@ func modSquare(nodeID, param uint32, low, high float32, period uint32)
 //go:wasmimport audio mod_square
 func modSawtooth(nodeID, param uint32, low, high float32, period uint32)
 
+//go:wasmimport audio set_param
+func setParam(nodeID, param uint32, val float32)
+
 //go:wasmimport audio reset
 func reset(nodeID uint32)
 
diff --git a/firefly/audio/nodes.go b/firefly/audio/nodes.go
index ca250a3..9e415a2 100644
--- a/firefly/audio/nodes.go
+++ b/firefly/audio/nodes.go
@@ -304,3 +304,76 @@ func (n Clip) ModulateLow(low, high float32, m Modulator) {
 func (n Clip) ModulateHigh(low, high float32, m Modulator) {
 	m.Modulate(n.id, 2, low, high)
 }
+
+// Set oscillation frequency.
+func (n Sine) Set(freq Hz) {
+	setParam(n.id, 0, float32(freq))
+}
+
+// Set oscillation frequency.
+func (n Square) Set(freq Hz) {
+	setParam(n.id, 0, float32(freq))
+}
+
+// Set oscillation frequency.
+func (n Sawtooth) Set(freq Hz) {
+	setParam(n.id, 0, float32(freq))
+}
+
+// Set oscillation frequency.
+func (n Triangle) Set(freq Hz) {
+	setParam(n.id, 0, float32(freq))
+}
+
+// Set the gain level.
+func (n Gain) Set(val float32) {
+	setParam(n.id, 0, val)
+}
+
+// Set the pan value (from 0. to 1.: 0. is only left, 1. is only right).
+func (n Pan) Set(val float32) {
+	setParam(n.id, 0, val)
+}
+
+func (n Mute) Mute() {
+	setParam(n.id, 0, 0.)
+}
+
+func (n Mute) Unmute() {
+	setParam(n.id, 0, 1.)
+}
+
+func (n Pause) Pause() {
+	setParam(n.id, 0, 0.)
+}
+
+func (n Pause) Play() {
+	setParam(n.id, 0, 1.)
+}
+
+// Set the cut-off frequency.
+func (n LowPass) SetFreq(freq Hz) {
+	setParam(n.id, 0, float32(freq))
+}
+
+// Set the cut-off frequency.
+func (n HighPass) SetFreq(freq Hz) {
+	setParam(n.id, 0, float32(freq))
+}
+
+// Set the low cut amplitude and adjust the high amplitude to keep the gap.
+//
+// In other words, the difference between low and high cut points will stay the same.
+func (n Clip) SetBoth(val float32) {
+	setParam(n.id, 0, val)
+}
+
+// Set the low cut amplitude.
+func (n Clip) SetLow(val float32) {
+	setParam(n.id, 1, val)
+}
+
+// Set the high cut amplitude.
+func (n Clip) SetHigh(val float32) {
+	setParam(n.id, 2, val)
+}