From b572e1c7947bc02255a1e104bb117dbce40425fc Mon Sep 17 00:00:00 2001
From: LucasDLTG <lucas.deletang.legravier@gmail.com>
Date: Mon, 10 Aug 2026 17:58:55 +0200
Subject: [PATCH] feat: start in tab

---
 .../dsp408/InputSection/InputSection.css      | 117 ++++++++
 .../dsp408/InputSection/InputSection.tsx      | 258 ++++++++++++++++--
 2 files changed, 352 insertions(+), 23 deletions(-)

diff --git a/src/components/dsp408/InputSection/InputSection.css b/src/components/dsp408/InputSection/InputSection.css
index c7eca5e..f5223ac 100644
--- a/src/components/dsp408/InputSection/InputSection.css
+++ b/src/components/dsp408/InputSection/InputSection.css
@@ -223,3 +223,120 @@
   color: var(--text-muted);
   white-space: nowrap;
 }
+
+.crossover-panel {
+  position: relative;
+  height: 100%;
+  aspect-ratio: 0.28;
+  flex: 0 0 auto;
+
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: flex-start;
+
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-md);
+  box-sizing: border-box;
+  gap: 2cqh;
+  background: var(--bg-void);
+  padding-bottom: 2cqh;
+}
+
+.crossover-panel__title {
+  flex: 0 0 auto;
+  width: 100%;
+  text-align: center;
+  font-family: var(--font-ui);
+  font-size: 4cqh;
+  font-weight: var(--font-weight-semibold);
+  padding-top: 2cqh;
+  padding-bottom: 2cqh;
+  border-bottom: var(--border-width) solid var(--border-hairline);
+
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.crossover-panel__select {
+  flex: 0 0 auto;
+  width: 85%;
+  font-family: var(--font-ui);
+  font-size: 3cqh;
+  padding: 1cqh;
+  background: var(--bg-panel);
+  color: inherit;
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-sm);
+}
+
+.gain-meter-panel {
+  container-type: size;
+
+  position: relative;
+  height: 100%;
+  aspect-ratio: 1 / 2;
+  flex: 0 0 auto;
+
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+
+  border: var(--border-width) solid var(--border-hairline);
+  border-radius: var(--radius-md);
+  box-sizing: border-box;
+  background: var(--bg-void);
+}
+
+.gain-meter-panel__title {
+  flex: 0 0 auto;
+  width: 100%;
+  text-align: center;
+  font-family: var(--font-ui);
+  font-size: 4cqh;
+  font-weight: var(--font-weight-semibold);
+  padding-top: 2cqh;
+  padding-bottom: 2cqh;
+  border-bottom: var(--border-width) solid var(--border-hairline);
+
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.gain-meter-panel__grid {
+  flex: 1 1 auto;
+  min-height: 0;
+  width: 100%;
+  padding: 2cqh;
+  box-sizing: border-box;
+
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  /* slider/meter row gets the bulk of the height, button row stays compact */
+  grid-template-rows: 1fr auto;
+  gap: 1.5cqh;
+}
+
+.gain-meter-panel__cell {
+  min-width: 0;
+  min-height: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.gain-meter-panel__cell--slider,
+.gain-meter-panel__cell--meter {
+  height: 100%;
+}
+
+.gain-meter-panel__cell--btn {
+  flex: 0 0 auto;
+}
+
+.gain-meter-panel__cell--meter {
+  align-items: stretch;
+  justify-content: stretch;
+}
diff --git a/src/components/dsp408/InputSection/InputSection.tsx b/src/components/dsp408/InputSection/InputSection.tsx
index 73bdc3a..70177f7 100644
--- a/src/components/dsp408/InputSection/InputSection.tsx
+++ b/src/components/dsp408/InputSection/InputSection.tsx
@@ -3,37 +3,37 @@ import VerticalSlider from '../VerticalSlider/VerticalSlider';
 // ASSUMPTION: an InputChannel enum exists alongside OutputChannel, mapping
 // input pages 1-8 similarly (In1 -> 0, In2 -> 1, ...). Adjust import/values
 // if the actual enum differs.
-import { InputChannel, Channel, PEQBand, PEQFilter, PEQ } from '../../../types/dsp408State';
+import { InputChannel, Channel, PEQBand, PEQFilter, PEQ, Meter } from '../../../types/dsp408State';
 import { DSP } from '../../../types/types';
 import { CrossoverFilter } from '../../../types/dsp408State';
 import { LinearGraph } from '../LinearGraph/LinearGraph';
 import { useRef, useState } from 'react';
 import './InputSection.css';
 import ChannelGroup from '../ChannelGroup/ChannelGroup';
+import Button from '../../Button/Button';
+import MeterBar from '../../MeterBar/MeterBar';
 
 const FREQ_MIN = 20;
 const FREQ_MAX = 20000;
 const FREQ_STEP = 1;
 
 const FILTER_TYPE_OPTIONS: { value: CrossoverFilter; label: string }[] = [
-  { value: CrossoverFilter.Bw6, label: 'BW 6 dB/oct' },
-  { value: CrossoverFilter.Bw12, label: 'BW 12 dB/oct' },
-  { value: CrossoverFilter.Bw18, label: 'BW 18 dB/oct' },
-  { value: CrossoverFilter.Bw24, label: 'BW 24 dB/oct' },
-  { value: CrossoverFilter.Bw30, label: 'BW 30 dB/oct' },
-  { value: CrossoverFilter.Bw36, label: 'BW 36 dB/oct' },
-  { value: CrossoverFilter.Bw42, label: 'BW 42 dB/oct' },
-  { value: CrossoverFilter.Bw48, label: 'BW 48 dB/oct' },
-  { value: CrossoverFilter.Lk12, label: 'LR 12 dB/oct' },
-  { value: CrossoverFilter.Lk24, label: 'LR 24 dB/oct' },
-  { value: CrossoverFilter.Lk36, label: 'LR 36 dB/oct' },
-  { value: CrossoverFilter.Lk48, label: 'LR 48 dB/oct' },
+  { value: CrossoverFilter.Bw6, label: 'BW-6' },
+  { value: CrossoverFilter.Bw12, label: 'BW-12' },
+  { value: CrossoverFilter.Bw18, label: 'BW-18' },
+  { value: CrossoverFilter.Bw24, label: 'BW-24' },
+  { value: CrossoverFilter.Bw30, label: 'BW-30' },
+  { value: CrossoverFilter.Bw36, label: 'BW-36' },
+  { value: CrossoverFilter.Bw42, label: 'BW-42' },
+  { value: CrossoverFilter.Bw48, label: 'BW-48' },
+  { value: CrossoverFilter.Lk12, label: 'LR-12' },
+  { value: CrossoverFilter.Lk24, label: 'LR-24' },
+  { value: CrossoverFilter.Lk36, label: 'LR-36' },
+  { value: CrossoverFilter.Lk48, label: 'LR-48' },
 ];
 
-const DEFAULT_FILTER_TYPE = CrossoverFilter.Bw12;
-
 const PEQ_SLIDER_PARAMS = [
-  { key: 'frequency', label: 'Frequency', min: 19.7, max: 20.16, step: 0.5, unit: ' Hz' },
+  { key: 'frequency', label: 'Frequency', min: 19.7, max: 20160, step: 0.5, unit: ' Hz' },
   { key: 'q', label: 'Q', min: 1, max: 999, step: 1, unit: '' },
   { key: 'gain', label: 'Gain', min: -12, max: +12, step: 0.1, unit: ' dB' },
 ] as const;
@@ -112,6 +112,185 @@ function PeqPanelSliders({
   );
 }
 
+function CrossoverPanel({
+  channel,
+  dsp,
+  title,
+  setCrossover,
+}: {
+  channel: Channel;
+  dsp: DSP;
+  title: string;
+  setCrossover: (
+    channel: Channel,
+    frequency: number,
+    filter_type: CrossoverFilter,
+    bypass: boolean
+  ) => Promise<boolean>;
+}) {
+  const channelState =
+    'Input' in channel
+      ? dsp.state?.current_config.input_states[channel.Input]
+      : dsp.state?.current_config.output_states[channel.Output];
+
+  const crossover = channelState?.crossover;
+
+  const frequency = crossover.high_pass.frequency;
+  const filter_type = crossover.high_pass.slope;
+  const bypass = false;
+
+  const commit = (overrides: {
+    frequency?: number;
+    filter_type?: CrossoverFilter;
+    bypass?: boolean;
+  }) => {
+    const next = { frequency, filter_type, bypass, ...overrides };
+    return setCrossover(channel, next.frequency, next.filter_type, next.bypass);
+  };
+
+  return (
+    <div className="crossover-panel">
+      <div className="crossover-panel__title">{title}</div>
+
+      <VerticalSlider
+        min={20}
+        max={20000}
+        step={() => 1}
+        unit=" Hz"
+        value={frequency}
+        onChange={(value) => commit({ frequency: value })}
+        style={{ width: '100%', flex: '1 1 auto' }}
+      />
+
+      <select
+        className="crossover-panel__select"
+        value={filter_type}
+        onChange={(e) => commit({ filter_type: e.target.value as CrossoverFilter })}
+      >
+        {FILTER_TYPE_OPTIONS.map((opt) => (
+          <option key={opt.value} value={opt.value}>
+            {opt.label}
+          </option>
+        ))}
+      </select>
+
+      <Button
+        variant="toggle"
+        className={bypass ? 'active-warning' : ''}
+        onClick={() => commit({ bypass: !bypass })}
+        style={{
+          width: '85%',
+          paddingLeft: 0,
+          paddingRight: 0,
+          fontSize: '4cqh',
+          paddingTop: '2cqh',
+          paddingBottom: '2cqh',
+          minHeight: 0,
+        }}
+      >
+        {bypass ? 'Bypassed' : 'Bypass'}
+      </Button>
+    </div>
+  );
+}
+
+function GainMeterPanel({
+  dsp,
+  channel,
+  title,
+  meter,
+  setGain,
+  setMute,
+  setInverse,
+}: {
+  dsp: DSP;
+  channel: Channel;
+  title: string;
+  meter: Meter;
+  setGain: (channel: Channel, gain: number) => Promise<boolean>;
+  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
+  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
+}) {
+  const channelState =
+    'Input' in channel
+      ? dsp.state?.current_config.input_states[channel.Input]
+      : dsp.state?.current_config.output_states[channel.Output];
+
+  const muted = channelState?.mute ?? false;
+  const inverted = channelState?.phase_inverted ?? false;
+  const gain = channelState?.gain ?? 0;
+
+  const toggleMute = async () => {
+    await setMute(channel, !muted);
+  };
+
+  const toggleInverse = async () => {
+    await setInverse(channel, !inverted);
+  };
+
+  return (
+    <div className="gain-meter-panel">
+      <div className="gain-meter-panel__title">{title}</div>
+
+      <div className="gain-meter-panel__grid">
+        <div className="gain-meter-panel__cell gain-meter-panel__cell--slider">
+          <VerticalSlider
+            min={-60}
+            max={12}
+            step={(v) => (v >= -20 ? 0.1 : 0.5)}
+            unit=" dB"
+            value={gain}
+            onChange={(value) => setGain(channel, value)}
+            style={{ width: '100%', height: '100%' }}
+          />
+        </div>
+
+        <div className="gain-meter-panel__cell gain-meter-panel__cell--meter">
+          <MeterBar label="" meter={meter} />
+        </div>
+
+        <div className="gain-meter-panel__cell gain-meter-panel__cell--btn">
+          <Button
+            variant="toggle"
+            className={inverted ? 'active-warning' : ''}
+            onClick={toggleInverse}
+            style={{
+              width: '100%',
+              paddingLeft: 0,
+              paddingRight: 0,
+              fontSize: '3.5cqh',
+              paddingTop: '1cqh',
+              paddingBottom: '1cqh',
+              minHeight: 0,
+            }}
+          >
+            {inverted ? 'Inverted' : 'Invert'}
+          </Button>
+        </div>
+
+        <div className="gain-meter-panel__cell gain-meter-panel__cell--btn">
+          <Button
+            variant="toggle"
+            className={muted ? 'active-danger' : ''}
+            onClick={toggleMute}
+            style={{
+              width: '100%',
+              paddingLeft: 0,
+              paddingRight: 0,
+              fontSize: '3.5cqh',
+              paddingTop: '1cqh',
+              paddingBottom: '1cqh',
+              minHeight: 0,
+            }}
+          >
+            {muted ? 'Muted' : 'Mute'}
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}
+
 type SetFilterFn = (
   channel: Channel,
   freq: number,
@@ -131,10 +310,13 @@ type setPeqBandFn = (
 function InputSection({
   dsp,
   channel,
-  set_high_pass,
+  set_high_pass: setHighPass,
   set_low_pass,
   setPeq,
   // setPeqBypass,
+  setGain,
+  setMute,
+  setInverse,
 }: {
   dsp: DSP;
   channel: InputChannel;
@@ -142,6 +324,9 @@ function InputSection({
   set_low_pass: SetFilterFn;
   setPeq: setPeqBandFn;
   // setPeqBypass;
+  setGain: (channel: Channel, gain: number) => Promise<boolean>;
+  setMute: (channel: Channel, muted: boolean) => Promise<boolean>;
+  setInverse: (channel: Channel, inverted: boolean) => Promise<boolean>;
 }) {
   const [activeBand, setActiveBand] = useState<PEQBand>(PEQBand.B1);
 
@@ -159,12 +344,12 @@ function InputSection({
   const activeFilterType = bypassed && lp.slope !== CrossoverFilter.Bypass ? lp.slope : hp.slope;
 
   // Remembers the last non-bypass slope so the Bypass button can restore it.
-  const lastNonBypassType = useRef<CrossoverFilter>(
-    activeFilterType === CrossoverFilter.Bypass ? DEFAULT_FILTER_TYPE : activeFilterType
-  );
-  if (activeFilterType !== CrossoverFilter.Bypass) {
-    lastNonBypassType.current = activeFilterType;
-  }
+  // const lastNonBypassType = useRef<CrossoverFilter>(
+  //   activeFilterType === CrossoverFilter.Bypass ? DEFAULT_FILTER_TYPE : activeFilterType
+  // );
+  // if (activeFilterType !== CrossoverFilter.Bypass) {
+  //   lastNonBypassType.current = activeFilterType;
+  // }
 
   const hpFreq = liveHpFreq ?? hp.frequency;
   const lpFreq = liveLpFreq ?? lp.frequency;
@@ -225,6 +410,33 @@ function InputSection({
           <ChannelGroup title="PEQ">
             <PeqPanelSliders channel={channel} dsp={dsp} band={PEQBand.B1} setPEQ={setPeq} />
           </ChannelGroup>
+
+          <ChannelGroup title="CrossOver">
+            <CrossoverPanel
+              channel={{ Input: channel }}
+              dsp={dsp}
+              title="LowPass"
+              setCrossover={setHighPass}
+            />
+            <CrossoverPanel
+              channel={{ Input: channel }}
+              dsp={dsp}
+              title="HighPass"
+              setCrossover={setHighPass}
+            />
+          </ChannelGroup>
+
+          <ChannelGroup title="Gain">
+            <GainMeterPanel
+              dsp={dsp}
+              channel={{ Input: channel }}
+              title={dsp.state.current_config.input_states.InA.name}
+              meter={dsp.meters.channels[0]}
+              setGain={setGain}
+              setMute={setMute}
+              setInverse={setInverse}
+            />
+          </ChannelGroup>
           {/* <div className="input-control-panel__sliders">
             <div className="input-control-panel__cell input-control-panel__cell--high-pass">
               <VerticalSlider