rlvgl-widgets 0.2.5

//! Hand-authored `Scale` and `Skin` constants matching the JSON files
//! under `assets/audio-meters/{scales,skins}/`. These are the path-(b)
//! integration shape from AM-05/06: app code references these
//! constants directly.
//!
//! The path-(a) replacement — `rlvgl-creator meters from-yaml` emitting
//! these constants from JSON — lands in AM-04b. When that ships, this
//! file becomes the codegen target rather than hand-authored.
//!
//! **Editing rule:** if you change a value here, you MUST also update
//! the corresponding JSON descriptor under
//! `assets/audio-meters/{scales,skins}/`. The `presets_match_json` test
//! will catch divergence on most fields.

use rlvgl_audio_meters_core::Ballistic;

use super::skin::{
    Layout, MeterColorId, MeterType, Orientation, Palette, Scale, SecondaryColors, Skin,
    SkinAssets, TickLabel, Zone, rgb,
};

// ---- Scales ---------------------------------------------------------

/// `vu_broadcast` — US/SMPTE VU. `0 VU = -20 dBFS = +4 dBu`.
pub static SCALE_VU_BROADCAST: Scale = Scale {
    id: "vu_broadcast",
    label_units: "dBVU",
    range_min_db: -20.0,
    range_max_db: 3.0,
    pivot_value: 0.0,
    pivot_label: "0",
    pivot_input_dbfs: -20.0,
    calibration_offset_db: Some(24.0),
    majors: &[-20.0, -10.0, -7.0, -5.0, -3.0, -1.0, 0.0, 1.0, 2.0, 3.0],
    minors_per_major_division: 4,
    tick_labels: &[
        TickLabel {
            value: -20.0,
            label: "−20",
        },
        TickLabel {
            value: -10.0,
            label: "−10",
        },
        TickLabel {
            value: -7.0,
            label: "−7",
        },
        TickLabel {
            value: -5.0,
            label: "−5",
        },
        TickLabel {
            value: -3.0,
            label: "−3",
        },
        TickLabel {
            value: -1.0,
            label: "−1",
        },
        TickLabel {
            value: 0.0,
            label: "0",
        },
        TickLabel {
            value: 1.0,
            label: "+1",
        },
        TickLabel {
            value: 2.0,
            label: "+2",
        },
        TickLabel {
            value: 3.0,
            label: "+3",
        },
    ],
    zones: &[
        Zone {
            from_db: -20.0,
            to_db: -3.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: -3.0,
            to_db: 0.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: 0.0,
            to_db: 1.0,
            color: MeterColorId::Caution,
        },
        Zone {
            from_db: 1.0,
            to_db: 3.0,
            color: MeterColorId::Hot,
        },
    ],
};

/// `vu_ebu` — EBU VU. `0 VU = -18 dBFS = 0 dBu`.
pub static SCALE_VU_EBU: Scale = Scale {
    id: "vu_ebu",
    label_units: "dBVU",
    range_min_db: -18.0,
    range_max_db: 3.0,
    pivot_value: 0.0,
    pivot_label: "0",
    pivot_input_dbfs: -18.0,
    calibration_offset_db: Some(18.0),
    majors: &[-18.0, -10.0, -7.0, -5.0, -3.0, -1.0, 0.0, 1.0, 2.0, 3.0],
    minors_per_major_division: 4,
    tick_labels: &[
        TickLabel {
            value: -18.0,
            label: "−18",
        },
        TickLabel {
            value: -10.0,
            label: "−10",
        },
        TickLabel {
            value: -7.0,
            label: "−7",
        },
        TickLabel {
            value: -5.0,
            label: "−5",
        },
        TickLabel {
            value: -3.0,
            label: "−3",
        },
        TickLabel {
            value: -1.0,
            label: "−1",
        },
        TickLabel {
            value: 0.0,
            label: "0",
        },
        TickLabel {
            value: 1.0,
            label: "+1",
        },
        TickLabel {
            value: 2.0,
            label: "+2",
        },
        TickLabel {
            value: 3.0,
            label: "+3",
        },
    ],
    zones: &[
        Zone {
            from_db: -18.0,
            to_db: -3.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: -3.0,
            to_db: 0.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: 0.0,
            to_db: 1.0,
            color: MeterColorId::Caution,
        },
        Zone {
            from_db: 1.0,
            to_db: 3.0,
            color: MeterColorId::Hot,
        },
    ],
};

/// `digital_peak` — AES17 dBFS, range −60…0.
pub static SCALE_DIGITAL_PEAK: Scale = Scale {
    id: "digital_peak",
    label_units: "dBFS",
    range_min_db: -60.0,
    range_max_db: 0.0,
    pivot_value: 0.0,
    pivot_label: "0",
    pivot_input_dbfs: 0.0,
    calibration_offset_db: None,
    majors: &[-60.0, -50.0, -40.0, -30.0, -20.0, -12.0, -6.0, -3.0, 0.0],
    minors_per_major_division: 5,
    tick_labels: &[
        TickLabel {
            value: -60.0,
            label: "−60",
        },
        TickLabel {
            value: -50.0,
            label: "−50",
        },
        TickLabel {
            value: -40.0,
            label: "−40",
        },
        TickLabel {
            value: -30.0,
            label: "−30",
        },
        TickLabel {
            value: -20.0,
            label: "−20",
        },
        TickLabel {
            value: -12.0,
            label: "−12",
        },
        TickLabel {
            value: -6.0,
            label: "−6",
        },
        TickLabel {
            value: -3.0,
            label: "−3",
        },
        TickLabel {
            value: 0.0,
            label: "0",
        },
    ],
    zones: &[
        Zone {
            from_db: -60.0,
            to_db: -12.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: -12.0,
            to_db: -3.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: -3.0,
            to_db: -0.1,
            color: MeterColorId::Caution,
        },
        Zone {
            from_db: -0.1,
            to_db: 0.0,
            color: MeterColorId::Over,
        },
    ],
};

/// `ppm_din` — DIN 45406 PPM (Nordic broadcast convention).
/// Range −50 … +5 dB; pivot label "0" maps to −9 dBFS.
pub static SCALE_PPM_DIN: Scale = Scale {
    id: "ppm_din",
    label_units: "dB",
    range_min_db: -50.0,
    range_max_db: 5.0,
    pivot_value: 0.0,
    pivot_label: "0",
    pivot_input_dbfs: -9.0,
    calibration_offset_db: None,
    majors: &[-50.0, -40.0, -30.0, -20.0, -10.0, -5.0, 0.0, 5.0],
    minors_per_major_division: 4,
    tick_labels: &[
        TickLabel {
            value: -50.0,
            label: "−50",
        },
        TickLabel {
            value: -40.0,
            label: "−40",
        },
        TickLabel {
            value: -30.0,
            label: "−30",
        },
        TickLabel {
            value: -20.0,
            label: "−20",
        },
        TickLabel {
            value: -10.0,
            label: "−10",
        },
        TickLabel {
            value: -5.0,
            label: "−5",
        },
        TickLabel {
            value: 0.0,
            label: "0",
        },
        TickLabel {
            value: 5.0,
            label: "+5",
        },
    ],
    zones: &[
        Zone {
            from_db: -50.0,
            to_db: -10.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: -10.0,
            to_db: 0.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: 0.0,
            to_db: 3.0,
            color: MeterColorId::Caution,
        },
        Zone {
            from_db: 3.0,
            to_db: 5.0,
            color: MeterColorId::Hot,
        },
    ],
};

/// `ppm_iia_bbc` — BBC PPM (IEC 60268-10 Type IIa). Range 1 … 7 in
/// "BBC marks"; alignment level "4" maps to −18 dBFS.
pub static SCALE_PPM_IIA_BBC: Scale = Scale {
    id: "ppm_iia_bbc",
    label_units: "BBC",
    range_min_db: 1.0,
    range_max_db: 7.0,
    pivot_value: 4.0,
    pivot_label: "4",
    pivot_input_dbfs: -18.0,
    calibration_offset_db: None,
    majors: &[1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0],
    minors_per_major_division: 0,
    tick_labels: &[
        TickLabel {
            value: 1.0,
            label: "1",
        },
        TickLabel {
            value: 2.0,
            label: "2",
        },
        TickLabel {
            value: 3.0,
            label: "3",
        },
        TickLabel {
            value: 4.0,
            label: "4",
        },
        TickLabel {
            value: 5.0,
            label: "5",
        },
        TickLabel {
            value: 6.0,
            label: "6",
        },
        TickLabel {
            value: 7.0,
            label: "7",
        },
    ],
    zones: &[
        Zone {
            from_db: 1.0,
            to_db: 4.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: 4.0,
            to_db: 6.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: 6.0,
            to_db: 7.0,
            color: MeterColorId::Hot,
        },
    ],
};

/// `lufs_ebu_r128` — EBU R 128 LUFS scale; target -23.
pub static SCALE_LUFS_EBU_R128: Scale = Scale {
    id: "lufs_ebu_r128",
    label_units: "LUFS",
    range_min_db: -36.0,
    range_max_db: 0.0,
    pivot_value: -23.0,
    pivot_label: "−23",
    pivot_input_dbfs: -23.0,
    calibration_offset_db: None,
    majors: &[
        -36.0, -30.0, -27.0, -25.0, -23.0, -21.0, -19.0, -17.0, -15.0, -10.0, -5.0, 0.0,
    ],
    minors_per_major_division: 1,
    tick_labels: &[
        TickLabel {
            value: -36.0,
            label: "−36",
        },
        TickLabel {
            value: -30.0,
            label: "−30",
        },
        TickLabel {
            value: -27.0,
            label: "−27",
        },
        TickLabel {
            value: -25.0,
            label: "−25",
        },
        TickLabel {
            value: -23.0,
            label: "−23",
        },
        TickLabel {
            value: -21.0,
            label: "−21",
        },
        TickLabel {
            value: -19.0,
            label: "−19",
        },
        TickLabel {
            value: -17.0,
            label: "−17",
        },
        TickLabel {
            value: -15.0,
            label: "−15",
        },
        TickLabel {
            value: -10.0,
            label: "−10",
        },
        TickLabel {
            value: -5.0,
            label: "−5",
        },
        TickLabel {
            value: 0.0,
            label: "0",
        },
    ],
    zones: &[
        Zone {
            from_db: -36.0,
            to_db: -25.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: -25.0,
            to_db: -21.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: -21.0,
            to_db: -15.0,
            color: MeterColorId::Caution,
        },
        Zone {
            from_db: -15.0,
            to_db: 0.0,
            color: MeterColorId::Hot,
        },
    ],
};

/// `lufs_streaming_m14` — Streaming target (-14 LUFS): Spotify, YouTube,
/// Apple Music style. Same range as EBU R 128 (-36..0) but a different
/// target loudness; production tooling commonly toggles between EBU
/// (-23) and streaming (-14) targets.
pub static SCALE_LUFS_STREAMING_M14: Scale = Scale {
    id: "lufs_streaming_m14",
    label_units: "LUFS",
    range_min_db: -36.0,
    range_max_db: 0.0,
    pivot_value: -14.0,
    pivot_label: "−14",
    pivot_input_dbfs: -14.0,
    calibration_offset_db: None,
    majors: &[
        -36.0, -30.0, -24.0, -20.0, -16.0, -14.0, -12.0, -10.0, -8.0, -5.0, -3.0, 0.0,
    ],
    minors_per_major_division: 1,
    tick_labels: &[
        TickLabel {
            value: -36.0,
            label: "−36",
        },
        TickLabel {
            value: -30.0,
            label: "−30",
        },
        TickLabel {
            value: -24.0,
            label: "−24",
        },
        TickLabel {
            value: -20.0,
            label: "−20",
        },
        TickLabel {
            value: -16.0,
            label: "−16",
        },
        TickLabel {
            value: -14.0,
            label: "−14",
        },
        TickLabel {
            value: -12.0,
            label: "−12",
        },
        TickLabel {
            value: -10.0,
            label: "−10",
        },
        TickLabel {
            value: -8.0,
            label: "−8",
        },
        TickLabel {
            value: -5.0,
            label: "−5",
        },
        TickLabel {
            value: -3.0,
            label: "−3",
        },
        TickLabel {
            value: 0.0,
            label: "0",
        },
    ],
    zones: &[
        Zone {
            from_db: -36.0,
            to_db: -16.0,
            color: MeterColorId::Safe,
        },
        Zone {
            from_db: -16.0,
            to_db: -12.0,
            color: MeterColorId::Nominal,
        },
        Zone {
            from_db: -12.0,
            to_db: -8.0,
            color: MeterColorId::Caution,
        },
        Zone {
            from_db: -8.0,
            to_db: 0.0,
            color: MeterColorId::Hot,
        },
    ],
};

// ---- Skins ----------------------------------------------------------

/// `broadcast_classic_bargraph` — US LED bargraph; classic green/amber/red.
pub static BROADCAST_CLASSIC_BARGRAPH: Skin = Skin {
    id: "broadcast_classic_bargraph",
    title: "Broadcast Classic — LED Bargraph",
    scale: &SCALE_VU_BROADCAST,
    default_ballistic: Ballistic::Vu,
    meter_type: MeterType::Bargraph,
    palette: Palette {
        safe: rgb(0x1f, 0x9d, 0x4f),
        nominal: rgb(0x3e, 0xd2, 0x7a),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x0c, 0x0c, 0x0e)),
        frame: Some(rgb(0x2a, 0x2a, 0x2e)),
        scale_text: Some(rgb(0xcf, 0xcf, 0xd2)),
        minor_tick: Some(rgb(0x5b, 0x5b, 0x62)),
        major_tick: Some(rgb(0xa0, 0xa0, 0xa8)),
        needle: None,
        needle_pivot: None,
        led_off: Some(rgb(0x1c, 0x1c, 0x1f)),
        peak_hold: Some(rgb(0xff, 0xff, 0xff)),
    },
    layout: Layout {
        orientation: Orientation::Vertical,
        aspect_ratio: 0.18,
        led_count: 32,
        peak_hold_ms: 1200.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `ebu_classic_bargraph` — EBU LED bargraph; teal-tinted Safe band.
pub static EBU_CLASSIC_BARGRAPH: Skin = Skin {
    id: "ebu_classic_bargraph",
    title: "EBU Classic — LED Bargraph",
    scale: &SCALE_VU_EBU,
    default_ballistic: Ballistic::Vu,
    meter_type: MeterType::Bargraph,
    palette: Palette {
        safe: rgb(0x1f, 0x7d, 0x8c),
        nominal: rgb(0x3e, 0xb1, 0xc4),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x0a, 0x0c, 0x0d)),
        frame: Some(rgb(0x23, 0x28, 0x2b)),
        scale_text: Some(rgb(0xd6, 0xdc, 0xde)),
        minor_tick: Some(rgb(0x56, 0x63, 0x6a)),
        major_tick: Some(rgb(0x9a, 0xa6, 0xad)),
        needle: None,
        needle_pivot: None,
        led_off: Some(rgb(0x16, 0x1a, 0x1c)),
        peak_hold: Some(rgb(0xff, 0xff, 0xff)),
    },
    layout: Layout {
        orientation: Orientation::Vertical,
        aspect_ratio: 0.18,
        led_count: 32,
        peak_hold_ms: 1500.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `broadcast_classic_needle` — Cream-faced analog VU look over `vu_broadcast`.
pub static BROADCAST_CLASSIC_NEEDLE: Skin = Skin {
    id: "broadcast_classic_needle",
    title: "Broadcast Classic — Analog Needle",
    scale: &SCALE_VU_BROADCAST,
    default_ballistic: Ballistic::Vu,
    meter_type: MeterType::Needle,
    palette: Palette {
        safe: rgb(0x1f, 0x1f, 0x1f),
        nominal: rgb(0x1f, 0x1f, 0x1f),
        caution: rgb(0xa0, 0x7b, 0x1c),
        hot: rgb(0xa7, 0x2b, 0x1f),
        over: rgb(0xd1, 0x1a, 0x1a),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0xf1, 0xe7, 0xc4)),
        frame: Some(rgb(0x3a, 0x2a, 0x18)),
        scale_text: Some(rgb(0x1a, 0x1a, 0x1a)),
        minor_tick: Some(rgb(0x3a, 0x2a, 0x18)),
        major_tick: Some(rgb(0x1a, 0x1a, 0x1a)),
        needle: Some(rgb(0x1a, 0x1a, 0x1a)),
        needle_pivot: Some(rgb(0x3a, 0x2a, 0x18)),
        led_off: None,
        peak_hold: Some(rgb(0xd1, 0x1a, 0x1a)),
    },
    layout: Layout {
        orientation: Orientation::Horizontal,
        aspect_ratio: 1.6,
        led_count: 0,
        peak_hold_ms: 0.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `digital_studio_numeric` — Two-line numeric dBFS readout.
pub static DIGITAL_STUDIO_NUMERIC: Skin = Skin {
    id: "digital_studio_numeric",
    title: "Digital Studio — Numeric Readout",
    scale: &SCALE_DIGITAL_PEAK,
    default_ballistic: Ballistic::DigitalPeak,
    meter_type: MeterType::Numeric,
    palette: Palette {
        safe: rgb(0x3e, 0xd2, 0x7a),
        nominal: rgb(0x3e, 0xd2, 0x7a),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x08, 0x08, 0x0a)),
        frame: Some(rgb(0x1d, 0x21, 0x26)),
        scale_text: Some(rgb(0xdd, 0xe2, 0xe6)),
        minor_tick: None,
        major_tick: None,
        needle: None,
        needle_pivot: None,
        led_off: None,
        peak_hold: Some(rgb(0xff, 0xe3, 0x5a)),
    },
    layout: Layout {
        orientation: Orientation::Horizontal,
        aspect_ratio: 2.5,
        led_count: 0,
        peak_hold_ms: 1500.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `lufs_ebu_r128_gauge` — EBU R 128 LUFS loudness gauge.
pub static LUFS_EBU_R128_GAUGE: Skin = Skin {
    id: "lufs_ebu_r128_gauge",
    title: "EBU R 128 — LUFS Loudness Gauge",
    scale: &SCALE_LUFS_EBU_R128,
    default_ballistic: Ballistic::LufsI,
    meter_type: MeterType::LufsGauge,
    palette: Palette {
        safe: rgb(0x3e, 0xd2, 0x7a),
        nominal: rgb(0x3e, 0xd2, 0x7a),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x08, 0x08, 0x0a)),
        frame: Some(rgb(0x1d, 0x21, 0x26)),
        scale_text: Some(rgb(0xdd, 0xe2, 0xe6)),
        minor_tick: None,
        major_tick: None,
        needle: None,
        needle_pivot: None,
        led_off: None,
        peak_hold: None,
    },
    layout: Layout {
        orientation: Orientation::Horizontal,
        aspect_ratio: 2.0,
        led_count: 0,
        peak_hold_ms: 0.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `streaming_lufs_gauge` — LUFS loudness gauge calibrated for
/// streaming targets (-14 LUFS, Spotify / YouTube / Apple Music
/// convention). Same compound widget shape as
/// [`LUFS_EBU_R128_GAUGE`]; different scale target.
pub static STREAMING_LUFS_GAUGE: Skin = Skin {
    id: "streaming_lufs_gauge",
    title: "Streaming — LUFS Loudness Gauge (−14 target)",
    scale: &SCALE_LUFS_STREAMING_M14,
    default_ballistic: Ballistic::LufsI,
    meter_type: MeterType::LufsGauge,
    palette: Palette {
        safe: rgb(0x3e, 0xd2, 0x7a),
        nominal: rgb(0x3e, 0xd2, 0x7a),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x0a, 0x0c, 0x10)),
        frame: Some(rgb(0x1d, 0x21, 0x26)),
        scale_text: Some(rgb(0xdd, 0xe2, 0xe6)),
        minor_tick: None,
        major_tick: None,
        needle: None,
        needle_pivot: None,
        led_off: None,
        peak_hold: None,
    },
    layout: Layout {
        orientation: Orientation::Horizontal,
        aspect_ratio: 2.0,
        led_count: 0,
        peak_hold_ms: 0.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `nordic_ppm_bargraph` — DIN 45406 Type I PPM, vertical bargraph.
/// Pairs the `ppm_din` scale with the fast-attack `PpmTypeI`
/// ballistic; conventional green-to-red banding.
pub static NORDIC_PPM_BARGRAPH: Skin = Skin {
    id: "nordic_ppm_bargraph",
    title: "Nordic PPM — DIN 45406 Bargraph",
    scale: &SCALE_PPM_DIN,
    default_ballistic: Ballistic::PpmTypeI,
    meter_type: MeterType::Bargraph,
    palette: Palette {
        safe: rgb(0x2c, 0x8a, 0x3f),
        nominal: rgb(0x4c, 0xc4, 0x6a),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x0a, 0x0d, 0x0a)),
        frame: Some(rgb(0x1f, 0x26, 0x20)),
        scale_text: Some(rgb(0xcf, 0xd5, 0xcf)),
        minor_tick: Some(rgb(0x46, 0x50, 0x49)),
        major_tick: Some(rgb(0x8a, 0x94, 0x8c)),
        needle: None,
        needle_pivot: None,
        led_off: Some(rgb(0x16, 0x1a, 0x17)),
        peak_hold: Some(rgb(0xff, 0xff, 0xff)),
    },
    layout: Layout {
        orientation: Orientation::Vertical,
        aspect_ratio: 0.16,
        led_count: 40,
        peak_hold_ms: 1500.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `bbc_ppm_needle` — BBC PPM (IEC 60268-10 Type IIa) analog needle.
/// 1..7 BBC marks across the arc; alignment level "4" maps to
/// −18 dBFS via `pivot_input_dbfs`.
pub static BBC_PPM_NEEDLE: Skin = Skin {
    id: "bbc_ppm_needle",
    title: "BBC PPM — IEC Type IIa Needle",
    scale: &SCALE_PPM_IIA_BBC,
    default_ballistic: Ballistic::PpmTypeIIa,
    meter_type: MeterType::Needle,
    palette: Palette {
        safe: rgb(0x1f, 0x1f, 0x1f),
        nominal: rgb(0x1f, 0x1f, 0x1f),
        caution: rgb(0x1f, 0x1f, 0x1f),
        hot: rgb(0xa7, 0x2b, 0x1f),
        over: rgb(0xd1, 0x1a, 0x1a),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x0a, 0x0a, 0x0c)),
        frame: Some(rgb(0x27, 0x27, 0x2a)),
        scale_text: Some(rgb(0xdc, 0xdc, 0xe0)),
        minor_tick: Some(rgb(0x66, 0x66, 0x69)),
        major_tick: Some(rgb(0xdc, 0xdc, 0xe0)),
        needle: Some(rgb(0xdc, 0xdc, 0xe0)),
        needle_pivot: Some(rgb(0x7a, 0x7a, 0x7e)),
        led_off: None,
        peak_hold: None,
    },
    layout: Layout {
        orientation: Orientation::Horizontal,
        aspect_ratio: 1.6,
        led_count: 0,
        peak_hold_ms: 0.0,
    },
    assets: SkinAssets::EMPTY,
};

/// `digital_studio_bargraph` — High-resolution dBFS peak meter.
pub static DIGITAL_STUDIO_BARGRAPH: Skin = Skin {
    id: "digital_studio_bargraph",
    title: "Digital Studio — Peak Bargraph",
    scale: &SCALE_DIGITAL_PEAK,
    default_ballistic: Ballistic::DigitalPeak,
    meter_type: MeterType::Bargraph,
    palette: Palette {
        safe: rgb(0x2e, 0x7d, 0xd1),
        nominal: rgb(0x3e, 0xd2, 0x7a),
        caution: rgb(0xe6, 0xb2, 0x2c),
        hot: rgb(0xd2, 0x4b, 0x2e),
        over: rgb(0xff, 0x2a, 0x1f),
    },
    secondary: SecondaryColors {
        background: Some(rgb(0x08, 0x0a, 0x0c)),
        frame: Some(rgb(0x1d, 0x21, 0x26)),
        scale_text: Some(rgb(0xdd, 0xe2, 0xe6)),
        minor_tick: Some(rgb(0x4d, 0x55, 0x5c)),
        major_tick: Some(rgb(0x8e, 0x98, 0xa0)),
        needle: None,
        needle_pivot: None,
        led_off: Some(rgb(0x11, 0x14, 0x1a)),
        peak_hold: Some(rgb(0xff, 0xe3, 0x5a)),
    },
    layout: Layout {
        orientation: Orientation::Vertical,
        aspect_ratio: 0.16,
        led_count: 48,
        peak_hold_ms: 1500.0,
    },
    assets: SkinAssets::EMPTY,
};