feat: dont moove slider cursor if tcp command fails

src/App.tsx

@@ -18,14 +18,7 @@ function App() {
   const activeDsp = dsps.find((d) => d.id === selected) ?? null;
   const connectedDspCount = dsps.filter((dsp) => dsp.status === 'connected').length;
 
-  const dsp408 = useDSP408(
+  const dsp408 = useDSP408(dsps, setDsps, selected, setSelected, setPage, notify);
-    dsps,
-    setDsps,
-    selected,
-    setSelected,
-    setPage,
-    notify
-  );
 
   return (
     <div className="app">
@@ -60,10 +53,7 @@ function App() {
         ) : page === 'add-dsp' ? (
           <AddDSPForm onCancel={() => setPage('home')} onAdd={dsp408.addDSP} />
         ) : activeDsp ? (
-          <DSPPage
+          <DSPPage dsp={activeDsp} dsp408={dsp408.forDSP(activeDsp)} />
-            dsp={activeDsp}
-            dsp408={dsp408.forDSP(activeDsp)}
-          />
         ) : (
           <HomePage
             onAddDSP={() => setPage('add-dsp')}

src/components/dsp408/GainSection/GainSection.tsx

@@ -1,8 +1,6 @@
 import VerticalSlider from '../Slider/VerticalSlider';
-import { invoke } from '@tauri-apps/api/core';
 import { InputChannel, Channel, OutputChannel } from '../../../types/dsp408State';
 import { DSP } from '../../../types/types';
-import { NotificationType } from '../../../types/types';
 import Button from '../../Button/Button';
 import ChannelGroup from '../ChannelGroup/ChannelGroup';
 import { LinearGraph } from '../LinearGraph/LinearGraph';
@@ -12,109 +10,62 @@ import './GainSection.css';
 const PANEL_DESIGN_WIDTH = 90;
 const PANEL_DESIGN_HEIGHT = 400;
 
-function ChannelGroupScaled({ title, children }: { title: string; children: React.ReactNode }) {
+// function ChannelGroupScaled({ title, children }: { title: string; children: React.ReactNode }) {
-  const wrapperRef = useRef<HTMLDivElement>(null);
+//   const wrapperRef = useRef<HTMLDivElement>(null);
-  const [scale, setScale] = useState(1);
+//   const [scale, setScale] = useState(1);
 
-  useEffect(() => {
+//   useEffect(() => {
-    const el = wrapperRef.current;
+//     const el = wrapperRef.current;
-    if (!el) return;
+//     if (!el) return;
-    const observer = new ResizeObserver((entries) => {
+//     const observer = new ResizeObserver((entries) => {
-      const { height } = entries[0].contentRect;
+//       const { height } = entries[0].contentRect;
-      if (height === 0) return;
+//       if (height === 0) return;
-      setScale(height / PANEL_DESIGN_HEIGHT); // height is the only free axis here
+//       setScale(height / PANEL_DESIGN_HEIGHT); // height is the only free axis here
-    });
+//     });
-    observer.observe(el);
+//     observer.observe(el);
-    return () => observer.disconnect();
+//     return () => observer.disconnect();
-  }, []);
+//   }, []);
 
-  return (
+//   return (
-    <div ref={wrapperRef} style={{ height: '100%', '--panel-scale': scale } as React.CSSProperties}>
+//     <div ref={wrapperRef} style={{ height: '100%', '--panel-scale': scale } as React.CSSProperties}>
-      <ChannelGroup title={title}>{children}</ChannelGroup>
+//       <ChannelGroup title={title}>{children}</ChannelGroup>
-    </div>
+//     </div>
-  );
+//   );
-}
+// }
 
 function GainPanel({
   dsp,
-  notify,
   channel,
   title,
+  setGain,
+  setMute,
+  setInverse,
 }: {
   dsp: DSP;
-  notify: (message: string, type?: NotificationType, dspName?: string) => void;
   channel: Channel;
   title: string;
+  setGain: (channel: Channel, gain: number) => Promise<boolean>;
+  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
+  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
 }) {
-  const setGain = async (value: number) => {
+  const channelState =
-    try {
+    'Input' in channel
-      const success = await invoke<boolean>('set_channel_gain', {
+      ? dsp.state?.current_config.input_states[channel.Input]
-        id: dsp.id,
+      : dsp.state?.current_config.output_states[channel.Output];
-        channel,
-        db: value,
-      });
 
-      if (success) {
+  const muted = channelState?.mute ?? false;
-        notify(`Input A gain set to ${value} dB`, 'success', dsp.name);
+  const inverted = channelState?.phase_inverted ?? false;
-      } else {
+  const gain = channelState?.gain ?? 0;
-        notify('Failed to set input gain', 'error', dsp.name);
-      }
-    } catch (err) {
-      notify(`Gain update failed: ${String(err)}`, 'error', dsp.name);
-    }
-  };
 
-  const setMute = async (muted: boolean) => {
-    try {
-      const success = await invoke<boolean>('set_mute', {
-        id: dsp.id,
-        channel,
-        muted,
-      });
-
-      if (success) {
-        notify(`Input A ${muted ? 'muted' : 'unmuted'}`, 'success', dsp.name);
-      } else {
-        notify('Failed to change mute state', 'error', dsp.name);
-      }
-    } catch (err) {
-      notify(`Mute update failed: ${String(err)}`, 'error', dsp.name);
-    }
-  };
-
-  const setInverse = async (inverted: boolean) => {
-    try {
-      const success = await invoke<boolean>('set_channel_inverse_gain', {
-        id: dsp.id,
-        channel,
-        inverted,
-      });
-
-      if (success) {
-        notify(`Input A phase ${inverted ? 'inverted' : 'normal'}`, 'success', dsp.name);
-      } else {
-        notify('Failed to change phase', 'error', dsp.name);
-      }
-    } catch (err) {
-      notify(`Phase update failed: ${String(err)}`, 'error', dsp.name);
-    }
-  };
-
-  const [muted, setMuted] = useState(false);
-  const [inverted, setInverted] = useState(false);
   const viewportRef = useRef<HTMLDivElement>(null);
   const [scale, setScale] = useState(1);
 
   const toggleMute = async () => {
-    const next = !muted;
+    await setMute(channel, !muted);
-    setMuted(next);
-    await setMute(next);
   };
 
   const toggleInverse = async () => {
-    const next = !inverted;
+    await setInverse(channel, !inverted);
-    setInverted(next);
-    await setInverse(next);
   };
 
   useEffect(() => {
@@ -148,7 +99,8 @@ function GainPanel({
           switchStepValue={-10}
           switchStep={0.1}
           unit=" dB"
-          onChange={setGain}
+          value={gain}
+          onChange={(value) => setGain(channel, value)}
           style={{ width: 70, height: 260, flex: '0 0 auto' }} // pin to design size, disable its own auto-shrink
         />
 
@@ -169,10 +121,14 @@ function GainPanel({
 
 function GainSection({
   dsp,
-  notify,
+  setGain,
+  setMute,
+  setInverse,
 }: {
   dsp: DSP;
-  notify: (message: string, type?: NotificationType, dspName?: string) => void;
+  setGain: (channel: Channel, gain: number) => Promise<boolean>;
+  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
+  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
 }) {
   const inputs: { channel: Channel; title: string }[] = [
     { channel: { Input: InputChannel.InA }, title: 'In A' },
@@ -223,13 +179,29 @@ function GainSection({
         <div className="gain-panels">
           <ChannelGroup title="Input">
             {inputs.map(({ channel, title }) => (
-              <GainPanel key={title} dsp={dsp} notify={notify} channel={channel} title={title} />
+              <GainPanel
+                key={title}
+                dsp={dsp}
+                channel={channel}
+                title={title}
+                setGain={setGain}
+                setMute={setMute}
+                setInverse={setInverse}
+              />
             ))}
           </ChannelGroup>
 
           <ChannelGroup title="Output">
             {outputs.map(({ channel, title }) => (
-              <GainPanel key={title} dsp={dsp} notify={notify} channel={channel} title={title} />
+              <GainPanel
+                key={title}
+                dsp={dsp}
+                channel={channel}
+                title={title}
+                setGain={setGain}
+                setMute={setMute}
+                setInverse={setInverse}
+              />
             ))}
           </ChannelGroup>
         </div>

src/components/dsp408/GateSection/GateSection.tsx

@@ -1,35 +1,35 @@
-import VerticalSlider from '../Slider/VerticalSlider';
+// import VerticalSlider from '../Slider/VerticalSlider';
-import { invoke } from '@tauri-apps/api/core';
+// import { invoke } from '@tauri-apps/api/core';
-import { InputChannel, Channel, OutputChannel } from '../../../types/dsp408State';
+// import { InputChannel, Channel, OutputChannel } from '../../../types/dsp408State';
-import { DSP } from '../../../types/types';
+// import { DSP } from '../../../types/types';
-import { NotificationType } from '../../../types/types';
+// import { NotificationType } from '../../../types/types';
 
-import ChannelGroup from '../ChannelGroup/ChannelGroup';
+// import ChannelGroup from '../ChannelGroup/ChannelGroup';
-import './GateSection.css';
+// import './GateSection.css';
 
-function GateSection({
+// function GateSection({
-  dsp,
+//   dsp,
-  notify,
+//   notify,
-}: {
+// }: {
-  dsp: DSP;
+//   dsp: DSP;
-  notify: (message: string, type?: NotificationType, dspName?: string) => void;
+//   notify: (message: string, type?: NotificationType, dspName?: string) => void;
-}) {
+// }) {
-  console.log(dsp, notify);
+//   console.log(dsp, notify);
-  return (
+//   return (
-    <div className="rerere">
+//     <div className="rerere">
-      <VerticalSlider
+//       <VerticalSlider
-        min={-60}
+//         min={-60}
-        max={12}
+//         max={12}
-        step={0.5}
+//         step={0.5}
-        switchStepValue={-10}
+//         switchStepValue={-10}
-        switchStep={0.1}
+//         switchStep={0.1}
-        unit=" dB"
+//         unit=" dB"
-        onChange={(_f: number) => {
+//         onChange={(_f: number) => {
-          return;
+//           return;
-        }}
+//         }}
-      />
+//       />
-    </div>
+//     </div>
-  );
+//   );
-}
+// }
 
-export default GateSection;
+// export default GateSection;

src/components/dsp408/Slider/VerticalSlider.tsx

@@ -13,8 +13,8 @@ type VerticalSliderProps = {
   switchStepValue?: number;
   switchStep?: number;
 
-  value?: number;
+  value: number;
-  onChange?: (value: number) => void;
+  onChange?: (value: number) => Promise<boolean>;
 
   unit?: string;
 
@@ -34,23 +34,18 @@ export default function VerticalSlider({
   step,
   switchStepValue,
   switchStep,
-  value: controlledValue,
+  value,
   onChange,
   unit = '',
   className,
   style,
 }: VerticalSliderProps) {
-  const [internalValue, setInternalValue] = useState(min);
-  const value = controlledValue ?? internalValue;
-
   const [editingText, setEditingText] = useState<string | null>(null);
   const inputRef = useRef<HTMLInputElement>(null);
   const sliderRef = useRef<HTMLDivElement>(null);
-  const lastValue = useRef(value);
   const keyboardValue = useRef<number | null>(null);
   const [displayValue, setDisplayValue] = useState(value);
   const dragValue = useRef(value);
-  const rafRef = useRef<number | null>(null);
   const dragging = useRef(false);
   const thumbRef = useRef<HTMLDivElement>(null);
   const keyboardEditing = useRef(false);
@@ -74,16 +69,20 @@ export default function VerticalSlider({
   }, []);
 
   useEffect(() => {
+    if (dragging.current) return;
     if (keyboardEditing.current) return;
 
     setDisplayValue(value);
     dragValue.current = value;
   }, [value]);
 
-  const currentStep =
+  function getStep(value: number) {
-    switchStepValue !== undefined && switchStep !== undefined && value >= switchStepValue
+    if (switchStepValue !== undefined && switchStep !== undefined && value >= switchStepValue) {
-      ? switchStep
+      return switchStep;
-      : step;
+    }
+
+    return step;
+  }
 
   const decimals = useMemo(
     () => Math.max(getDecimals(step), switchStep !== undefined ? getDecimals(switchStep) : 0),
@@ -92,30 +91,25 @@ export default function VerticalSlider({
 
   function normalizeValue(input: number) {
     const clamped = Math.min(max, Math.max(min, input));
-    const snapped = Math.round(clamped / currentStep) * currentStep;
+
-    return Number(snapped.toFixed(6));
+    const currentStep = getStep(clamped);
+
+    const snapped = min + Math.round((clamped - min) / currentStep) * currentStep;
+
+    return Number(Math.min(max, Math.max(min, snapped)).toFixed(6));
   }
 
-  function updateValue(v: number) {
+  function updateValue(input: number) {
-    const next = normalizeValue(v);
+    const next = normalizeValue(input);
+
     dragValue.current = next;
-    lastValue.current = next;
+    setDisplayValue(next);
-
-    if (thumbRef.current) {
-      const percent = (next - min) / (max - min);
-      thumbRef.current.style.bottom = `${percent * 100}%`;
-    }
-
-    if (rafRef.current === null) {
-      rafRef.current = requestAnimationFrame(() => {
-        setDisplayValue(dragValue.current);
-        rafRef.current = null;
-      });
-    }
   }
 
   function handleKeyDown(e: React.KeyboardEvent<HTMLDivElement>) {
-    if (!['ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'].includes(e.key)) return;
+    if (!['ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight'].includes(e.key)) {
+      return;
+    }
 
     keyboardEditing.current = true;
 
@@ -123,33 +117,39 @@ export default function VerticalSlider({
 
     const base = keyboardValue.current ?? value;
 
+    const currentStep = getStep(base);
+
     let next = base;
 
-    if (e.key === 'ArrowUp' || e.key === 'ArrowRight') next += currentStep;
+    if (e.key === 'ArrowUp' || e.key === 'ArrowRight') {
+      next += currentStep;
+    }
 
-    if (e.key === 'ArrowDown' || e.key === 'ArrowLeft') next -= currentStep;
+    if (e.key === 'ArrowDown' || e.key === 'ArrowLeft') {
+      next -= currentStep;
+    }
 
     next = normalizeValue(next);
 
     keyboardValue.current = next;
 
-    updateValue(next); // updates displayValue only
+    updateValue(next);
   }
 
-  function handleKeyUp() {
+  async function handleKeyUp() {
     if (keyboardValue.current == null) return;
 
-    keyboardEditing.current = false;
-
     const next = keyboardValue.current;
 
-    if (controlledValue === undefined) {
+    const success = await onChange?.(next);
-      setInternalValue(next);
-    }
-
-    onChange?.(next);
 
+    keyboardEditing.current = false;
     keyboardValue.current = null;
+
+    if (success === false) {
+      setDisplayValue(value);
+      dragValue.current = value;
+    }
   }
 
   function valueFromPointer(clientY: number) {
@@ -172,28 +172,47 @@ export default function VerticalSlider({
     valueFromPointer(e.clientY);
   }
 
-  function endDrag(e: React.PointerEvent<HTMLDivElement>) {
+  async function endDrag(e: React.PointerEvent<HTMLDivElement>) {
-    dragging.current = false;
+    if (!dragging.current) return;
+
     const finalValue = dragValue.current;
 
-    if (controlledValue === undefined) setInternalValue(finalValue);
+    const success = await onChange?.(finalValue);
-    setDisplayValue(finalValue);
+
-    onChange?.(finalValue);
+    dragging.current = false;
+
+    if (success === false) {
+      setDisplayValue(value);
+      dragValue.current = value;
+    }
 
     if (e.currentTarget.hasPointerCapture(e.pointerId)) {
       e.currentTarget.releasePointerCapture(e.pointerId);
     }
   }
 
-  function commitEditing() {
+  async function commitEditing() {
     if (editingText !== null && editingText !== '' && editingText !== '-') {
       const parsed = Number(editingText);
-      if (!Number.isNaN(parsed)) updateValue(parsed);
+
+      if (!Number.isNaN(parsed)) {
+        const next = normalizeValue(parsed);
+
+        setDisplayValue(next);
+
+        const success = await onChange?.(next);
+
+        if (success === false) {
+          setDisplayValue(value);
+          dragValue.current = value;
         }
+      }
+    }
+
     setEditingText(null);
   }
 
-  const percent = (value - min) / (max - min);
+  const percent = (displayValue - min) / (max - min);
 
   return (
     <div

src/hooks/useDSP408.ts

@@ -3,7 +3,8 @@
 import { useEffect, useRef } from 'react';
 import { invoke } from '@tauri-apps/api/core';
 
-import { DSP, DSPStatus, AppPage } from '../types/types';
+import { DSP, AppPage } from '../types/types';
+import { Channel } from '../types/dsp408State';
 
 import {
   createDSP408,
@@ -16,11 +17,7 @@ import {
   getDSP408MeterLevels,
 } from '../api/dsp408';
 
-type NotifyFunction = (
+type NotifyFunction = (message: string, type: 'success' | 'error', dspName?: string) => void;
-  message: string,
-  type: 'success' | 'error',
-  dspName?: string
-) => void;
 
 type SetDsps = React.Dispatch<React.SetStateAction<DSP[]>>;
 
@@ -28,14 +25,8 @@ type SetDsps = React.Dispatch<React.SetStateAction<DSP[]>>;
 // Helpers
 // ============================================================
 
-function updateDSP(
+function updateDSP(setDsps: SetDsps, dspId: number, updater: (dsp: DSP) => DSP) {
-  setDsps: SetDsps,
+  setDsps((prev) => prev.map((dsp) => (dsp.id === dspId ? updater(dsp) : dsp)));
-  dspId: number,
-  updater: (dsp: DSP) => DSP
-) {
-  setDsps((prev) =>
-    prev.map((dsp) => (dsp.id === dspId ? updater(dsp) : dsp))
-  );
 }
 
 export type DSP408Device = {
@@ -43,6 +34,9 @@ export type DSP408Device = {
   disconnect: () => Promise<void>;
   recallPreset: (index: number) => Promise<boolean>;
   setCurrentPresetName: (name: string) => Promise<boolean>;
+  setGain: (channel: Channel, gain: number) => Promise<boolean>;
+  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
+  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
 };
 
 // ============================================================
@@ -173,10 +167,7 @@ export function useDSP408(
   // Generic operation wrapper
   // ----------------------------------------------------------
 
-  async function withPollingPaused<T>(
+  async function withPollingPaused<T>(dsp: DSP, operation: () => Promise<T>): Promise<T> {
-    dsp: DSP,
-    operation: () => Promise<T>
-  ): Promise<T> {
     setPollingPaused(dsp.id, true);
 
     try {
@@ -216,11 +207,7 @@ export function useDSP408(
         status: 'disconnected',
       }));
 
-      notify(
+      notify(`Connection failed: ${String(err)}`, 'error', dsp.name);
-        `Connection failed: ${String(err)}`,
-        'error',
-        dsp.name
-      );
     } finally {
       setPollingPaused(dsp.id, false);
     }
@@ -242,11 +229,7 @@ export function useDSP408(
       // If disconnect failed, it is probably still connected.
       setPollingPaused(dsp.id, false);
 
-      notify(
+      notify(`Disconnect failed: ${String(err)}`, 'error', dsp.name);
-        `Disconnect failed: ${String(err)}`,
-        'error',
-        dsp.name
-      );
     }
   }
 
@@ -254,18 +237,9 @@ export function useDSP408(
   // Add / Remove
   // ==========================================================
 
-  async function addDSP(
+  async function addDSP(dsp: Omit<DSP, 'id' | 'status' | 'state' | 'meters' | 'pollingPaused'>) {
-    dsp: Omit<
-      DSP,
-      'id' | 'status' | 'state' | 'meters' | 'pollingPaused'
-    >
-  ) {
     try {
-      const id = await createDSP408(
+      const id = await createDSP408(dsp.ip, dsp.port, dsp.deviceId);
-        dsp.ip,
-        dsp.port,
-        dsp.deviceId
-      );
 
       const newDsp: DSP = {
         id,
@@ -282,11 +256,7 @@ export function useDSP408(
 
       notify('Added successfully', 'success', dsp.name);
     } catch (err) {
-      notify(
+      notify(`Connection failed: ${String(err)}`, 'error', dsp.name);
-        `Connection failed: ${String(err)}`,
-        'error',
-        dsp.name
-      );
     }
   }
 
@@ -297,32 +267,20 @@ export function useDSP408(
       await removeDSP408(dsp.id);
 
       setDsps((prev) => {
-        const next = prev.filter(
+        const next = prev.filter((d) => d.id !== dsp.id);
-          (d) => d.id !== dsp.id
-        );
 
         if (selected === dsp.id) {
-          setSelected(
+          setSelected(next.length ? next[0].id : null);
-            next.length ? next[0].id : null
-          );
         }
 
         return next;
       });
 
-      notify(
+      notify('Removed successfully', 'success', dsp.name);
-        'Removed successfully',
-        'success',
-        dsp.name
-      );
     } catch (err) {
       setPollingPaused(dsp.id, false);
 
-      notify(
+      notify(`Remove failed: ${String(err)}`, 'error', dsp.name);
-        `Remove failed: ${String(err)}`,
-        'error',
-        dsp.name
-      );
     }
   }
 
@@ -330,23 +288,13 @@ export function useDSP408(
   // Presets
   // ==========================================================
 
-  async function recallPreset(
+  async function recallPreset(dsp: DSP, presetIndex: number) {
-    dsp: DSP,
-    presetIndex: number
-  ) {
     return withPollingPaused(dsp, async () => {
       try {
-        const success = await recallPresetDSP408(
+        const success = await recallPresetDSP408(dsp.id, presetIndex);
-          dsp.id,
-          presetIndex
-        );
 
         if (!success) {
-          notify(
+          notify('Failed to recall preset', 'error', dsp.name);
-            'Failed to recall preset',
-            'error',
-            dsp.name
-          );
 
           return false;
         }
@@ -366,47 +314,26 @@ export function useDSP408(
           };
         });
 
-        notify(
+        notify(`Preset ${presetIndex} recalled`, 'success', dsp.name);
-          `Preset ${presetIndex} recalled`,
-          'success',
-          dsp.name
-        );
 
         return true;
       } catch (err) {
-        notify(
+        notify(`Preset recall failed: ${String(err)}`, 'error', dsp.name);
-          `Preset recall failed: ${String(err)}`,
-          'error',
-          dsp.name
-        );
 
         return false;
       }
     });
   }
 
-  async function setCurrentPresetName(
+  async function setCurrentPresetName(dsp: DSP, name: string) {
-    dsp: DSP,
-    name: string
-  ) {
     return withPollingPaused(dsp, async () => {
       try {
-        const paddedName = name
+        const paddedName = name.slice(0, 14).padEnd(14, ' ');
-          .slice(0, 14)
-          .padEnd(14, ' ');
 
-        const success =
+        const success = await DSP408SetCurrentPresetName(dsp.id, paddedName);
-          await DSP408SetCurrentPresetName(
-            dsp.id,
-            paddedName
-          );
 
         if (!success) {
-          notify(
+          notify('Failed to rename preset', 'error', dsp.name);
-            'Failed to rename preset',
-            'error',
-            dsp.name
-          );
 
           return false;
         }
@@ -423,36 +350,20 @@ export function useDSP408(
               ...d.state,
               presets: {
                 ...presets,
-                names: presets.names.map(
+                names: presets.names.map((presetName, i) =>
-                  (presetName, i) =>
+                  i === index ? paddedName : presetName
-                    i === index
-                      ? paddedName
-                      : presetName
-                ),
-                modified: presets.modified.map(
-                  (modified, i) =>
-                    i === index
-                      ? true
-                      : modified
                 ),
+                modified: presets.modified.map((modified, i) => (i === index ? true : modified)),
               },
             },
           };
         });
 
-        notify(
+        notify('Preset renamed', 'success', dsp.name);
-          'Preset renamed',
-          'success',
-          dsp.name
-        );
 
         return true;
       } catch (err) {
-        notify(
+        notify(`Preset rename failed: ${String(err)}`, 'error', dsp.name);
-          `Preset rename failed: ${String(err)}`,
-          'error',
-          dsp.name
-        );
 
         return false;
       }
@@ -463,28 +374,54 @@ export function useDSP408(
   // Gain
   // ==========================================================
 
-  async function setGain(
+  async function setGain(dsp: DSP, channel: Channel, gain: number): Promise<boolean> {
-    dsp: DSP,
-    channel: number,
-    gain: number
-  ) {
     return withPollingPaused(dsp, async () => {
       try {
-        const success = await invoke<boolean>(
+        const success = await invoke<boolean>('set_channel_gain', {
-          'set_gain',
-          {
           id: dsp.id,
           channel,
-            gain,
+          db: gain,
-          }
+        });
-        );
 
         if (!success) {
-          notify(
+          notify('Failed to set gain', 'error', dsp.name);
-            'Failed to set gain',
+
-            'error',
+          return false;
-            dsp.name
+        }
-          );
+
+        const state = await getDSP408State(dsp.id);
+
+        updateDSP(setDsps, dsp.id, (d) => ({
+          ...d,
+          state,
+        }));
+
+        notify('Gain updated', 'success', dsp.name);
+
+        return true;
+      } catch (err) {
+        notify(`Gain update failed: ${String(err)}`, 'error', dsp.name);
+
+        return false;
+      }
+    });
+  }
+
+  // ==========================================================
+  // Mute
+  // ==========================================================
+
+  async function setMute(dsp: DSP, channel: Channel, muted: boolean): Promise<boolean> {
+    return withPollingPaused(dsp, async () => {
+      try {
+        const success = await invoke<boolean>('set_mute', {
+          id: dsp.id,
+          channel,
+          muted,
+        });
+
+        if (!success) {
+          notify('Failed to change mute state', 'error', dsp.name);
 
           return false;
         }
@@ -492,28 +429,130 @@ export function useDSP408(
         updateDSP(setDsps, dsp.id, (d) => {
           if (!d.state) return d;
 
+          const currentConfig = d.state.current_config;
+
+          if ('Input' in channel) {
+            const inputChannel = channel.Input;
+
             return {
               ...d,
               state: {
                 ...d.state,
-              // Update gain state here
+                current_config: {
+                  ...currentConfig,
+                  input_states: {
+                    ...currentConfig.input_states,
+                    [inputChannel]: {
+                      ...currentConfig.input_states[inputChannel],
+                      mute: muted,
+                    },
+                  },
+                },
+              },
+            };
+          }
+
+          const outputChannel = channel.Output;
+
+          return {
+            ...d,
+            state: {
+              ...d.state,
+              current_config: {
+                ...currentConfig,
+                output_states: {
+                  ...currentConfig.output_states,
+                  [outputChannel]: {
+                    ...currentConfig.output_states[outputChannel],
+                    mute: muted,
+                  },
+                },
+              },
             },
           };
         });
 
-        notify(
+        notify(muted ? 'Muted' : 'Unmuted', 'success', dsp.name);
-          'Gain updated',
-          'success',
-          dsp.name
-        );
 
         return true;
       } catch (err) {
-        notify(
+        notify(`Mute update failed: ${String(err)}`, 'error', dsp.name);
-          `Gain update failed: ${String(err)}`,
+
-          'error',
+        return false;
-          dsp.name
+      }
-        );
+    });
+  }
+
+  // ==========================================================
+  // Inverse
+  // ==========================================================
+
+  async function setInverse(dsp: DSP, channel: Channel, inverted: boolean): Promise<boolean> {
+    return withPollingPaused(dsp, async () => {
+      try {
+        const success = await invoke<boolean>('set_channel_inverse_gain', {
+          id: dsp.id,
+          channel,
+          inverted,
+        });
+
+        if (!success) {
+          notify('Failed to change phase', 'error', dsp.name);
+
+          return false;
+        }
+
+        updateDSP(setDsps, dsp.id, (d) => {
+          if (!d.state) return d;
+
+          const currentConfig = d.state.current_config;
+
+          if ('Input' in channel) {
+            const inputChannel = channel.Input;
+
+            return {
+              ...d,
+              state: {
+                ...d.state,
+                current_config: {
+                  ...currentConfig,
+                  input_states: {
+                    ...currentConfig.input_states,
+                    [inputChannel]: {
+                      ...currentConfig.input_states[inputChannel],
+                      phase_inverted: inverted,
+                    },
+                  },
+                },
+              },
+            };
+          }
+
+          const outputChannel = channel.Output;
+
+          return {
+            ...d,
+            state: {
+              ...d.state,
+              current_config: {
+                ...currentConfig,
+                output_states: {
+                  ...currentConfig.output_states,
+                  [outputChannel]: {
+                    ...currentConfig.output_states[outputChannel],
+                    phase_inverted: inverted,
+                  },
+                },
+              },
+            },
+          };
+        });
+
+        notify(inverted ? 'Phase inverted' : 'Phase normal', 'success', dsp.name);
+
+        return true;
+      } catch (err) {
+        notify(`Phase update failed: ${String(err)}`, 'error', dsp.name);
 
         return false;
       }
@@ -529,10 +568,10 @@ export function useDSP408(
       connect: () => connectDSP(dsp),
       disconnect: () => disconnectDSP(dsp),
       recallPreset: (index: number) => recallPreset(dsp, index),
-        setCurrentPresetName: (name: string) =>
+      setCurrentPresetName: (name: string) => setCurrentPresetName(dsp, name),
-        setCurrentPresetName(dsp, name),
+      setGain: (channel: Channel, gain: number) => setGain(dsp, channel, gain),
-        // setGain: (channel, gain) =>
+      setMute: (channel: Channel, muted: boolean) => setMute(dsp, channel, muted),
-        // setGain(dsp, channel, gain),
+      setInverse: (channel: Channel, inverted: boolean) => setInverse(dsp, channel, inverted),
     };
   }
 

src/pages/DspPage/DspPage.tsx

@@ -6,17 +6,11 @@ import ConnectionPanel from '../../components/dsp408/ConnectionSection/Connectio
 import GainSection from '../../components/dsp408/GainSection/GainSection';
 import { DSP408Device } from '../../hooks/useDSP408';
 import './DspPage.css';
-import GateSection from '../../components/dsp408/GateSection/GateSection';
+// import GateSection from '../../components/dsp408/GateSection/GateSection';
 import LoadingOverlay from '../../components/LoadingOverlay/LoadingOverlay';
 import { InputChannel, OutputChannel } from '../../types/dsp408State';
 
-function DSPPage({
+function DSPPage({ dsp, dsp408 }: { dsp: DSP; dsp408: DSP408Device }) {
-  dsp,
-  dsp408,
-}: {
-  dsp: DSP;
-  dsp408: DSP408Device;
-}) {
   const [activeSidebar, setActiveSidebar] = useState('overview');
   const [sidebarExpanded, setSidebarExpanded] = useState(false);
   const [selectedPreset, setSelectedPreset] = useState(dsp.state?.presets.current_index ?? 0);
@@ -170,10 +164,19 @@ function DSPPage({
   const renderTab = () => {
     switch (activeSidebar) {
       case 'overview':
-        return <ConnectionPanel dsp={dsp} onConnect={dsp408.connect} onDisconnect={dsp408.disconnect} />;
+        return (
+          <ConnectionPanel dsp={dsp} onConnect={dsp408.connect} onDisconnect={dsp408.disconnect} />
+        );
 
-      // case 'gain':
+      case 'gain':
-      //   return <GainSection dsp={dsp} notify={notify} />;
+        return (
+          <GainSection
+            dsp={dsp}
+            setGain={dsp408.setGain}
+            setMute={dsp408.setMute}
+            setInverse={dsp408.setInverse}
+          />
+        );
 
       // case 'gate':
       //   return <GateSection dsp={dsp} notify={notify} />;