jixel 0.1.0

Tiny JPEG XL encoder
Documentation 
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/*
 * // Copyright (c) Radzivon Bartoshyk 5/2026. All rights reserved.
 * //
 * // Redistribution and use in source and binary forms, with or without modification,
 * // are permitted provided that the following conditions are met:
 * //
 * // 1.  Redistributions of source code must retain the above copyright notice, this
 * // list of conditions and the following disclaimer.
 * //
 * // 2.  Redistributions in binary form must reproduce the above copyright notice,
 * // this list of conditions and the following disclaimer in the documentation
 * // and/or other materials provided with the distribution.
 * //
 * // 3.  Neither the name of the copyright holder nor the names of its
 * // contributors may be used to endorse or promote products derived from
 * // this software without specific prior written permission.
 * //
 * // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

use crate::ac_context::K_NUM_AC_CONTEXTS;
use crate::entropy::PrefixCode;

pub(crate) const K_NUM_DC_CONTEXTS: usize = 45;
pub(crate) const K_NUM_DC_PREFIX_CODES: usize = 8;

#[rustfmt::skip]
pub(crate) const K_DC_CONTEXT_MAP: [u8; K_NUM_DC_CONTEXTS] = [
    0, 1, 2, 2, 1, 1, 3, 0, 3, 0, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6,
    6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 6, 7, 6, 7, 6, 6, 5, 5,
];

pub(crate) const K_DC_PREFIX_CODES: [PrefixCode; K_NUM_DC_PREFIX_CODES] = [
    PrefixCode {
        depths: [
            6, 7, 7, 7, 7, 7, 7, 7, 1, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
            7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
            7, 7, 7, 7, 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0001, 0x0021, 0x0061, 0x0011, 0x0051, 0x0031, 0x0071, 0x0009, 0x0000, 0x0049, 0x0029,
            0x0069, 0x0019, 0x0059, 0x0039, 0x0079, 0x0005, 0x0045, 0x0025, 0x0065, 0x0015, 0x0055,
            0x0035, 0x0075, 0x000d, 0x004d, 0x002d, 0x006d, 0x001d, 0x005d, 0x003d, 0x007d, 0x0003,
            0x0043, 0x0023, 0x0063, 0x0013, 0x0053, 0x0033, 0x0073, 0x000b, 0x004b, 0x002b, 0x006b,
            0x001b, 0x005b, 0x003b, 0x007b, 0x0007, 0x0047, 0x0027, 0x0067, 0x0017, 0x0057, 0x0037,
            0x0077, 0x000f, 0x004f, 0x002f, 0x006f, 0x001f, 0x005f, 0x003f, 0x007f, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            1, 3, 2, 5, 4, 7, 7, 8, 8, 10, 9, 12, 10, 13, 11, 14, 13, 14, 14, 14, 14, 14, 14, 14,
            14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
            14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0,
        ],
        bits: [
            0x0000, 0x0003, 0x0001, 0x000f, 0x0007, 0x001f, 0x005f, 0x003f, 0x00bf, 0x017f, 0x007f,
            0x04ff, 0x037f, 0x0cff, 0x00ff, 0x02ff, 0x1cff, 0x22ff, 0x12ff, 0x32ff, 0x0aff, 0x2aff,
            0x1aff, 0x3aff, 0x06ff, 0x26ff, 0x16ff, 0x36ff, 0x0eff, 0x2eff, 0x1eff, 0x3eff, 0x01ff,
            0x21ff, 0x11ff, 0x31ff, 0x09ff, 0x29ff, 0x19ff, 0x39ff, 0x05ff, 0x25ff, 0x15ff, 0x35ff,
            0x0dff, 0x2dff, 0x1dff, 0x3dff, 0x03ff, 0x23ff, 0x13ff, 0x33ff, 0x0bff, 0x2bff, 0x1bff,
            0x3bff, 0x07ff, 0x27ff, 0x17ff, 0x37ff, 0x0fff, 0x2fff, 0x1fff, 0x3fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            1, 2, 4, 4, 8, 4, 13, 5, 15, 6, 15, 7, 15, 9, 15, 12, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0,
        ],
        bits: [
            0x0000, 0x0001, 0x0003, 0x000b, 0x007f, 0x0007, 0x09ff, 0x000f, 0x19ff, 0x001f, 0x59ff,
            0x003f, 0x39ff, 0x00ff, 0x79ff, 0x01ff, 0x05ff, 0x45ff, 0x25ff, 0x65ff, 0x15ff, 0x55ff,
            0x35ff, 0x75ff, 0x0dff, 0x4dff, 0x2dff, 0x6dff, 0x1dff, 0x5dff, 0x3dff, 0x7dff, 0x03ff,
            0x43ff, 0x23ff, 0x63ff, 0x13ff, 0x53ff, 0x33ff, 0x73ff, 0x0bff, 0x4bff, 0x2bff, 0x6bff,
            0x1bff, 0x5bff, 0x3bff, 0x7bff, 0x07ff, 0x47ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            1, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 9, 2, 9, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
            9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
            9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0000, 0x0007, 0x0087, 0x00c7, 0x01c7, 0x0027, 0x0127, 0x00a7, 0x01a7, 0x0067, 0x0167,
            0x00e7, 0x0003, 0x01e7, 0x0001, 0x0017, 0x0047, 0x0117, 0x0097, 0x0197, 0x0057, 0x0157,
            0x00d7, 0x01d7, 0x0037, 0x0137, 0x00b7, 0x01b7, 0x0077, 0x0177, 0x00f7, 0x01f7, 0x000f,
            0x010f, 0x008f, 0x018f, 0x004f, 0x014f, 0x00cf, 0x01cf, 0x002f, 0x012f, 0x00af, 0x01af,
            0x006f, 0x016f, 0x00ef, 0x01ef, 0x001f, 0x011f, 0x009f, 0x019f, 0x005f, 0x015f, 0x00df,
            0x01df, 0x003f, 0x013f, 0x00bf, 0x01bf, 0x007f, 0x017f, 0x00ff, 0x01ff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            1, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 3, 9, 2, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
            9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
            9, 9, 9, 9, 9, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0000, 0x0007, 0x0087, 0x0047, 0x00c7, 0x01c7, 0x0027, 0x0127, 0x00a7, 0x01a7, 0x0067,
            0x0167, 0x0003, 0x00e7, 0x0001, 0x01e7, 0x0017, 0x0117, 0x0097, 0x0197, 0x0057, 0x0157,
            0x00d7, 0x01d7, 0x0037, 0x0137, 0x00b7, 0x01b7, 0x0077, 0x0177, 0x00f7, 0x01f7, 0x000f,
            0x010f, 0x008f, 0x018f, 0x004f, 0x014f, 0x00cf, 0x01cf, 0x002f, 0x012f, 0x00af, 0x01af,
            0x006f, 0x016f, 0x00ef, 0x01ef, 0x001f, 0x011f, 0x009f, 0x019f, 0x005f, 0x015f, 0x00df,
            0x01df, 0x003f, 0x013f, 0x00bf, 0x01bf, 0x007f, 0x017f, 0x00ff, 0x01ff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            5, 6, 6, 6, 6, 7, 6, 7, 6, 7, 7, 7, 7, 8, 7, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5,
            5, 5, 5, 4, 5, 5, 5, 4, 5, 5, 5, 5, 5, 6, 6, 6, 7, 8, 9, 10, 11, 14, 14, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0004, 0x0015, 0x0035, 0x000d, 0x002d, 0x0037, 0x001d, 0x0077, 0x003d, 0x000f, 0x004f,
            0x002f, 0x006f, 0x003f, 0x001f, 0x00bf, 0x0003, 0x0023, 0x0013, 0x0033, 0x000b, 0x002b,
            0x001b, 0x003b, 0x0014, 0x000c, 0x001c, 0x0002, 0x0012, 0x000a, 0x001a, 0x0006, 0x0000,
            0x0016, 0x000e, 0x001e, 0x0008, 0x0001, 0x0011, 0x0009, 0x0019, 0x0005, 0x0007, 0x0027,
            0x0017, 0x005f, 0x007f, 0x00ff, 0x01ff, 0x03ff, 0x07ff, 0x27ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 4, 5, 5, 5, 5, 5, 6, 6, 5, 6, 6, 7, 7,
            7, 8, 8, 8, 9, 9, 10, 10, 10, 11, 11, 10, 11, 11, 12, 11, 12, 13, 14, 14, 14, 14, 14,
            14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0000, 0x0008, 0x0004, 0x000c, 0x0002, 0x000a, 0x000e, 0x001e, 0x0001, 0x0011, 0x0009,
            0x0019, 0x0005, 0x001b, 0x003b, 0x0007, 0x0006, 0x0015, 0x000d, 0x001d, 0x0003, 0x0013,
            0x0027, 0x0017, 0x000b, 0x0037, 0x000f, 0x002f, 0x006f, 0x001f, 0x005f, 0x00df, 0x003f,
            0x00bf, 0x01bf, 0x007f, 0x027f, 0x017f, 0x00ff, 0x04ff, 0x037f, 0x02ff, 0x06ff, 0x05ff,
            0x01ff, 0x0dff, 0x03ff, 0x13ff, 0x33ff, 0x0bff, 0x2bff, 0x1bff, 0x3bff, 0x07ff, 0x27ff,
            0x17ff, 0x37ff, 0x0fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 5, 5, 4, 4, 5, 5, 4, 5, 5, 5, 5,
            6, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 9, 10, 10, 11, 10, 12, 13, 13, 14, 14, 14, 14, 14,
            14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x000a, 0x001a, 0x0006, 0x0016, 0x000e, 0x001e, 0x0001, 0x0011, 0x000b, 0x002b, 0x001b,
            0x003b, 0x0007, 0x0027, 0x0017, 0x0037, 0x0000, 0x0008, 0x0009, 0x0019, 0x0004, 0x000c,
            0x0005, 0x0015, 0x0002, 0x000d, 0x001d, 0x0003, 0x0013, 0x000f, 0x002f, 0x006f, 0x001f,
            0x005f, 0x00df, 0x003f, 0x013f, 0x00bf, 0x01bf, 0x017f, 0x007f, 0x037f, 0x00ff, 0x01ff,
            0x02ff, 0x05ff, 0x0dff, 0x1dff, 0x03ff, 0x23ff, 0x13ff, 0x33ff, 0x0bff, 0x2bff, 0x1bff,
            0x3bff, 0x07ff, 0x27ff, 0x17ff, 0x37ff, 0x0fff, 0x2fff, 0x1fff, 0x3fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
];

pub(crate) const K_NUM_AC_PREFIX_CODES: usize = 8;

// Context map for AC coefficients. Length is K_NUM_AC_CONTEXTS = 1980.
#[rustfmt::skip]
pub(crate) const K_AC_CONTEXT_MAP: [u8; K_NUM_AC_CONTEXTS] = [
    // ---- Number-of-nonzeros contexts: 4 cols x 37 rows ----
    //   8x8_Y  8x16_Y  8x8_XB  8x16_XB
        0, 1, 2, 1,    // pred 0
        3, 4, 2, 2,    // pred 1
        0, 2, 5, 5,    // pred 2
        2, 2, 5, 5,    // pred 3
        0, 2, 5, 5,    // pred 4
        3, 2, 5, 5,    // pred 5
        0, 0, 5, 5,    // pred 6
        3, 0, 5, 0,    // pred 7
        0, 2, 5, 0,    // pred 8-9
        3, 0, 5, 0,    // pred 10-11
        3, 3, 5, 3,    // pred 12-13
        3, 3, 0, 3,    // pred 14-15
        3, 3, 0, 3,    // pred 16-17
        3, 3, 0, 3,    // pred 18-19
        3, 3, 3, 3,    // pred 20-21
        3, 3, 3, 3,    // pred 22-23
        3, 3, 3, 3,    // pred 24-25
        3, 3, 3, 6,    // pred 26-27
        3, 6, 3, 6,    // pred 28-29
        6, 6, 3, 6,    // pred 30-31
        6, 7, 3, 6,    // pred 32-33
        3, 7, 3, 6,    // pred 34-35
        3, 7, 3, 6,    // pred 36-37
        3, 7, 3, 6,    // pred 38-39
        3, 7, 3, 6,    // pred 40-41
        6, 7, 3, 7,    // pred 42-43
        6, 7, 3, 7,    // pred 44-45
        6, 7, 3, 6,    // pred 46-47
        6, 7, 3, 7,    // pred 48-49
        6, 7, 0, 0,    // pred 50-51
        6, 7, 0, 0,    // pred 52-53
        6, 7, 0, 0,    // pred 54-55
        6, 7, 0, 0,    // pred 56-57
        6, 7, 0, 0,    // pred 58-59
        6, 7, 0, 0,    // pred 60-61
        6, 7, 0, 0,    // pred 62-63
        0, 0, 0, 0,    // pred 64+

    // ---- Zero density context map for 8x8 Y blocks (458 entries) ----
    // NZL 1
    0, 1, 1, 1, 1, 1,
    4, 1, 4, 1, 1, 1, 4, 1,
    4, 4, 1, 4, 1, 4, 1, 4,
    1, 4, 4, 4, 1, 4, 1, 4,
    4, 1, 1, 4, 1, 4, 1, 1,
    1, 4, 1, 1, 1, 2, 1, 4,
    1, 2, 1, 4, 1, 4, 1, 1,
    1, 1, 4, 4, 4, 4, 2, 2,
    // NZL 2
    0, 4, 4, 4, 1, 4,
    4, 1, 4, 4, 1, 4, 4, 4,
    4, 1, 1, 1, 1, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 1, 2,
    4, 4, 1, 4, 1, 2, 1, 4,
    1, 1, 4, 2, 1, 2, 1, 4,
    1, 4, 1, 4, 4, 4, 4, 4,
    1, 4, 4, 4, 4, 4, 2, 2,
    // NZL 3-4
    0, 4, 4, 2, 1, 4,
    4, 4, 4, 4, 1, 2, 4, 4,
    4, 4, 4, 4, 1, 2, 4, 4,
    4, 4, 4, 4, 2, 4, 1, 2,
    1, 4, 4, 4, 4, 2, 1, 4,
    4, 4, 4, 4, 1, 2, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 2, 2, 2, 5,
    // NZL 5-8
    2, 0, 2, 4, 4, 2,
    4, 2, 2, 4, 1, 2, 4, 4,
    2, 4, 1, 2, 1, 0, 4, 2,
    4, 4, 4, 4, 1, 2, 1, 2,
    4, 4, 4, 4, 1, 2, 4, 4,
    4, 4, 4, 2, 1, 2, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 2, 2, 2, 5, 5,
    // NZL 9-12
    2, 0, 0, 2, 4, 0,
    2, 2, 0, 2, 1, 2, 4, 2,
    2, 2, 4, 2, 4, 4, 4, 2,
    2, 4, 2, 4, 2, 2, 1, 0,
    4, 2, 4, 4, 4, 2, 4, 2,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 2, 2, 2,
    2, 5, 5, 5,
    // NZL 13-20
    2, 0, 2, 0, 2, 2,
    2, 2, 2, 2, 4, 2, 2, 2,
    2, 2, 4, 2, 4, 2, 4, 2,
    2, 2, 2, 2, 4, 2, 4, 4,
    4, 2, 2, 2, 4, 4, 4, 2,
    2, 2, 4, 4, 4, 4, 2, 2,
    2, 2, 2, 2, 2, 5, 5, 5,
    5, 5,
    // NZL 21-32
    5, 0, 2, 5, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 5, 2, 0, 2, 5, 5, 0,
    5, 0, 5, 0, 0, 0,
    // NZL 33-63
    7, 0, 0, 7, 0, 7,
    0, 7, 7, 7, 0, 7, 7, 7,
    0, 7, 0, 7, 0, 3, 0, 7,
    3, 7, 3, 7, 0, 3, 0, 3,
    3, 3, 0, 3, 0, 0, 0, 3,
    3, 3, 0, 0, 0, 0, 0, 3,

    // ---- Zero density for 8x16 and 16x8 Y blocks (458 entries) ----
    // NZL 1
    4, 4, 1, 1, 4, 4,
    1, 1, 1, 1, 4, 4, 1, 1,
    1, 1, 1, 1, 4, 4, 1, 4,
    1, 1, 1, 1, 1, 1, 4, 1,
    1, 1, 1, 1, 4, 4, 1, 1,
    1, 1, 1, 4, 4, 4, 1, 1,
    1, 4, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 4, 4,
    // NZL 2
    4, 4, 1, 1, 2, 4,
    1, 4, 1, 4, 2, 4, 1, 4,
    1, 4, 4, 1, 2, 4, 1, 4,
    1, 1, 1, 4, 4, 4, 2, 2,
    1, 1, 1, 4, 4, 2, 1, 1,
    1, 1, 4, 4, 1, 4, 1, 1,
    1, 4, 1, 4, 1, 4, 1, 1,
    1, 1, 1, 1, 4, 4, 4, 2,
    // NZL 3-4
    4, 2, 4, 4, 5, 2,
    1, 1, 4, 1, 2, 2, 1, 1,
    1, 4, 4, 4, 2, 2, 1, 1,
    1, 4, 1, 1, 4, 2, 4, 5,
    1, 1, 1, 4, 4, 2, 1, 1,
    1, 1, 4, 4, 4, 2, 1, 1,
    4, 4, 1, 4, 1, 4, 1, 4,
    4, 4, 4, 4, 4, 2, 2, 2,
    // NZL 5-8
    0, 4, 2, 2, 2, 0,
    1, 4, 2, 5, 2, 0, 1, 4,
    1, 4, 2, 2, 4, 5, 4, 4,
    1, 1, 4, 4, 4, 2, 4, 2,
    4, 4, 1, 4, 2, 0, 4, 4,
    1, 4, 4, 4, 4, 2, 1, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 2, 2, 2,
    // NZL 9-12
    3, 2, 5, 2, 0, 0,
    4, 4, 2, 2, 4, 0, 4, 4,
    4, 4, 2, 2, 4, 0, 4, 4,
    1, 4, 4, 4, 2, 2, 4, 0,
    4, 4, 4, 4, 4, 2, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    2, 2, 5, 5,
    // NZL 13-20
    7, 2, 0, 5, 5, 0,
    4, 2, 2, 2, 4, 2, 4, 4,
    4, 4, 2, 2, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 2, 2, 2, 2, 5,
    5, 5,
    // NZL 21-32
    0, 5, 2, 5, 2, 5,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 4, 2, 2, 2,
    4, 4, 2, 2, 2, 2, 4, 2,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 5, 2, 5, 2, 5,
    2, 5, 5, 5, 5, 5,
    // NZL 33-63
    7, 7, 0, 7, 5, 7,
    5, 7, 0, 7, 5, 7, 5, 7,
    5, 3, 0, 7, 0, 3, 0, 3,
    5, 0, 0, 3, 0, 3, 5, 0,
    0, 0, 5, 0, 0, 0, 0, 0,
    5, 0, 0, 0, 0, 0, 3, 3,

    // ---- Zero density for 8x8 X and B blocks (458 entries) ----
    // NZL 1
    0, 1, 4, 4, 1, 1,
    4, 4, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 4, 4, 4, 4,
    // NZL 2
    0, 4, 4, 2, 1, 1,
    4, 4, 4, 4, 1, 1, 1, 4,
    4, 4, 1, 1, 1, 1, 1, 1,
    1, 4, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 4, 4, 4, 4,
    // NZL 3-4
    0, 2, 2, 2, 4, 4,
    4, 4, 4, 4, 1, 1, 4, 4,
    4, 4, 1, 4, 1, 1, 1, 4,
    4, 4, 1, 4, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    4, 4, 4, 4, 4, 4, 4, 4,
    // NZL 5-8
    2, 0, 2, 5, 4, 4,
    2, 2, 4, 4, 1, 4, 4, 4,
    4, 4, 4, 4, 1, 1, 4, 4,
    4, 4, 4, 4, 1, 1, 1, 1,
    1, 4, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4,
    // NZL 9-12
    5, 0, 2, 5, 4, 2,
    2, 2, 4, 2, 4, 4, 4, 4,
    4, 4, 4, 4, 1, 1, 4, 4,
    4, 4, 4, 4, 4, 4, 1, 4,
    4, 4, 4, 4, 1, 1, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 2, 4,
    // NZL 13-20
    5, 0, 2, 5, 4, 2,
    2, 2, 4, 2, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    2, 2,
    // NZL 21-32
    5, 0, 2, 5, 2, 2,
    2, 2, 2, 2, 4, 2, 2, 2,
    2, 2, 4, 2, 4, 4, 4, 2,
    4, 2, 4, 2, 4, 2, 4, 4,
    4, 2, 4, 2, 4, 4, 4, 4,
    4, 2, 4, 2, 4, 4, 4, 2,
    2, 2, 2, 5, 0, 0,
    // NZL 33-63
    0, 0, 2, 0, 2, 5,
    2, 5, 2, 5, 2, 2, 2, 5,
    2, 5, 2, 5, 2, 2, 2, 5,
    2, 5, 2, 5, 2, 5, 2, 2,
    2, 2, 2, 2, 5, 2, 2, 0,
    0, 0, 0, 0, 0, 0, 0, 0,

    // ---- Zero density for 8x16 and 16x8 X and B blocks (458 entries) ----
    // NZL 1
    1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    // NZL 2
    1, 4, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 4, 4,
    // NZL 3-4
    4, 4, 4, 4, 4, 4,
    1, 1, 1, 4, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 4, 4, 4, 4,
    // NZL 5-8
    2, 2, 4, 4, 4, 4,
    1, 4, 4, 4, 4, 4, 1, 4,
    1, 4, 4, 4, 1, 1, 4, 4,
    1, 1, 4, 4, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 4, 4,
    4, 4, 4, 4, 4, 4,
    // NZL 9-12
    2, 2, 4, 2, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 1, 1, 4, 4,
    1, 1, 1, 4, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4,
    // NZL 13-20
    2, 2, 4, 2, 4, 2,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    0, 0,
    // NZL 21-32
    5, 5, 2, 2, 2, 2,
    4, 2, 2, 2, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4,
    2, 2, 0, 0, 0, 0,
    // NZL 33-63
    0, 5, 2, 5, 2, 5,
    2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2,
    4, 4, 2, 4, 2, 2, 0, 0,
    0, 2, 0, 1, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
];

// Compile-time check: the array must be exactly K_NUM_AC_CONTEXTS long.
const _: () = {
    assert!(K_AC_CONTEXT_MAP.len() == K_NUM_AC_CONTEXTS);
};

pub(crate) const K_AC_PREFIX_CODES: [PrefixCode; K_NUM_AC_PREFIX_CODES] = [
    PrefixCode {
        depths: [
            4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 5, 5, 4, 5, 6, 6, 6, 7, 9, 9, 9,
            11, 12, 13, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0000, 0x0008, 0x0004, 0x000c, 0x0002, 0x0001, 0x0011, 0x0009, 0x0019, 0x0005, 0x0015,
            0x000d, 0x001d, 0x0003, 0x0013, 0x000b, 0x000a, 0x0006, 0x001b, 0x0007, 0x000e, 0x0017,
            0x000f, 0x002f, 0x001f, 0x003f, 0x007f, 0x017f, 0x00ff, 0x01ff, 0x05ff, 0x0dff, 0x1dff,
            0x03ff, 0x23ff, 0x63ff, 0x13ff, 0x53ff, 0x33ff, 0x73ff, 0x0bff, 0x4bff, 0x2bff, 0x6bff,
            0x1bff, 0x5bff, 0x3bff, 0x7bff, 0x07ff, 0x47ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            1, 2, 3, 5, 4, 6, 7, 9, 9, 11, 11, 12, 12, 12, 13, 13, 12, 12, 14, 15, 14, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0,
        ],
        bits: [
            0x0000, 0x0001, 0x0003, 0x000f, 0x0007, 0x001f, 0x003f, 0x007f, 0x017f, 0x00ff, 0x04ff,
            0x02ff, 0x0aff, 0x06ff, 0x09ff, 0x19ff, 0x0eff, 0x01ff, 0x05ff, 0x15ff, 0x25ff, 0x55ff,
            0x35ff, 0x75ff, 0x0dff, 0x4dff, 0x2dff, 0x6dff, 0x1dff, 0x5dff, 0x3dff, 0x7dff, 0x03ff,
            0x43ff, 0x23ff, 0x63ff, 0x13ff, 0x53ff, 0x33ff, 0x73ff, 0x0bff, 0x4bff, 0x2bff, 0x6bff,
            0x1bff, 0x5bff, 0x3bff, 0x7bff, 0x07ff, 0x47ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            2, 3, 3, 4, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 6, 7, 8, 8, 8, 10, 11, 12, 11, 12, 13,
            13, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0000, 0x0002, 0x0006, 0x0005, 0x0001, 0x000d, 0x0003, 0x000b, 0x001b, 0x0007, 0x0027,
            0x0017, 0x0037, 0x002f, 0x006f, 0x001f, 0x000f, 0x005f, 0x003f, 0x00bf, 0x007f, 0x00ff,
            0x02ff, 0x01ff, 0x06ff, 0x09ff, 0x05ff, 0x15ff, 0x0dff, 0x1dff, 0x3dff, 0x7dff, 0x03ff,
            0x43ff, 0x23ff, 0x63ff, 0x13ff, 0x53ff, 0x33ff, 0x73ff, 0x0bff, 0x4bff, 0x2bff, 0x6bff,
            0x1bff, 0x5bff, 0x3bff, 0x7bff, 0x07ff, 0x47ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 5, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 5, 5, 4, 5, 6, 6, 6,
            7, 8, 10, 10, 11, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x000e, 0x001e, 0x0001, 0x0011, 0x0009, 0x0019, 0x0005, 0x0015, 0x000d, 0x001b, 0x001d,
            0x003b, 0x0007, 0x0027, 0x0017, 0x0037, 0x0000, 0x0008, 0x0004, 0x000c, 0x0002, 0x000a,
            0x0003, 0x0013, 0x0006, 0x000b, 0x000f, 0x002f, 0x001f, 0x003f, 0x007f, 0x00ff, 0x02ff,
            0x01ff, 0x05ff, 0x15ff, 0x35ff, 0x0dff, 0x2dff, 0x1dff, 0x3dff, 0x03ff, 0x23ff, 0x13ff,
            0x33ff, 0x0bff, 0x2bff, 0x1bff, 0x3bff, 0x07ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            1, 3, 2, 5, 4, 7, 7, 8, 8, 9, 9, 11, 11, 12, 12, 12, 11, 12, 14, 15, 14, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0,
        ],
        bits: [
            0x0000, 0x0003, 0x0001, 0x000f, 0x0007, 0x001f, 0x005f, 0x003f, 0x00bf, 0x007f, 0x017f,
            0x00ff, 0x04ff, 0x06ff, 0x0eff, 0x01ff, 0x02ff, 0x09ff, 0x05ff, 0x15ff, 0x25ff, 0x55ff,
            0x35ff, 0x75ff, 0x0dff, 0x4dff, 0x2dff, 0x6dff, 0x1dff, 0x5dff, 0x3dff, 0x7dff, 0x03ff,
            0x43ff, 0x23ff, 0x63ff, 0x13ff, 0x53ff, 0x33ff, 0x73ff, 0x0bff, 0x4bff, 0x2bff, 0x6bff,
            0x1bff, 0x5bff, 0x3bff, 0x7bff, 0x07ff, 0x47ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 4, 5, 5, 6, 6, 7, 9, 9, 10, 11, 12, 12,
            12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x0000, 0x0004, 0x000c, 0x0002, 0x000a, 0x0006, 0x000e, 0x0001, 0x0009, 0x000d, 0x001d,
            0x0003, 0x0013, 0x000b, 0x001b, 0x000f, 0x0005, 0x0007, 0x0017, 0x002f, 0x001f, 0x003f,
            0x007f, 0x017f, 0x00ff, 0x02ff, 0x06ff, 0x0eff, 0x01ff, 0x09ff, 0x29ff, 0x19ff, 0x39ff,
            0x05ff, 0x25ff, 0x15ff, 0x35ff, 0x0dff, 0x2dff, 0x1dff, 0x3dff, 0x03ff, 0x23ff, 0x13ff,
            0x33ff, 0x0bff, 0x2bff, 0x1bff, 0x3bff, 0x07ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            9, 13, 13, 14, 13, 14, 13, 13, 13, 12, 12, 12, 11, 12, 11, 12, 10, 9, 8, 6, 5, 3, 2, 1,
            4, 9, 11, 12, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
            15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0,
        ],
        bits: [
            0x00bf, 0x01ff, 0x11ff, 0x0dff, 0x09ff, 0x2dff, 0x19ff, 0x05ff, 0x15ff, 0x04ff, 0x0cff,
            0x02ff, 0x037f, 0x0aff, 0x077f, 0x06ff, 0x017f, 0x01bf, 0x003f, 0x001f, 0x000f, 0x0003,
            0x0001, 0x0000, 0x0007, 0x007f, 0x00ff, 0x0eff, 0x1dff, 0x5dff, 0x3dff, 0x7dff, 0x03ff,
            0x43ff, 0x23ff, 0x63ff, 0x13ff, 0x53ff, 0x33ff, 0x73ff, 0x0bff, 0x4bff, 0x2bff, 0x6bff,
            0x1bff, 0x5bff, 0x3bff, 0x7bff, 0x07ff, 0x47ff, 0x27ff, 0x67ff, 0x17ff, 0x57ff, 0x37ff,
            0x77ff, 0x0fff, 0x4fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
    PrefixCode {
        depths: [
            5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 5, 5, 5, 5, 4, 5, 5, 5, 4, 4, 4, 5, 4,
            5, 5, 6, 5, 6, 7, 8, 8, 8, 10, 10, 11, 12, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
            14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        ],
        bits: [
            0x000a, 0x001a, 0x0006, 0x0003, 0x0023, 0x0013, 0x0033, 0x000b, 0x002b, 0x001b, 0x003b,
            0x0007, 0x0027, 0x0017, 0x0037, 0x001f, 0x0016, 0x000e, 0x001e, 0x0001, 0x0000, 0x0011,
            0x0009, 0x0019, 0x0008, 0x0004, 0x000c, 0x0005, 0x0002, 0x0015, 0x000d, 0x000f, 0x001d,
            0x002f, 0x005f, 0x003f, 0x00bf, 0x007f, 0x00ff, 0x02ff, 0x01ff, 0x05ff, 0x0dff, 0x1dff,
            0x3dff, 0x03ff, 0x23ff, 0x13ff, 0x33ff, 0x0bff, 0x2bff, 0x1bff, 0x3bff, 0x07ff, 0x27ff,
            0x17ff, 0x37ff, 0x0fff, 0x2fff, 0x6fff, 0x1fff, 0x5fff, 0x3fff, 0x7fff, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
            0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
        ],
    },
];
pub(crate) const K_GRADIENT_CONTEXT_LUT: [u8; 1024] = [
    44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
    43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
    43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
    43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
    43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43,
    43, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
    40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
    40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
    40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
    40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
    40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 39,
    39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39,
    39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39,
    39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
    38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
    38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
    38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37,
    37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
    36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 35,
    35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34,
    34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 30, 30,
    30, 30, 29, 29, 29, 28, 27, 27, 26, 42, 41, 41, 25, 25, 24, 24, 23, 23, 23, 23, 22, 22, 22, 22,
    21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19,
    19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
    17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
    17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
    16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15,
    15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
    15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
    15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
    14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
    14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
    13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12,
    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
];
pub(crate) const K_CONTEXT_TREE_TOKENS: [(u32, u32); 313] = [
    (1, 2),
    (0, 4),
    (1, 1),
    (0, 2),
    (1, 10),
    (0, 0),
    (1, 1),
    (0, 4),
    (1, 1),
    (0, 0),
    (1, 10),
    (0, 94),
    (1, 10),
    (0, 61),
    (1, 0),
    (2, 0),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 3),
    (0, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 10),
    (0, 382),
    (1, 10),
    (0, 22),
    (1, 10),
    (0, 13),
    (1, 10),
    (0, 253),
    (1, 8),
    (0, 10),
    (1, 8),
    (0, 10),
    (1, 10),
    (0, 784),
    (1, 10),
    (0, 190),
    (1, 10),
    (0, 46),
    (1, 10),
    (0, 10),
    (1, 10),
    (0, 5),
    (1, 10),
    (0, 29),
    (1, 10),
    (0, 125),
    (1, 10),
    (0, 509),
    (1, 8),
    (0, 22),
    (1, 8),
    (0, 6),
    (1, 8),
    (0, 22),
    (1, 8),
    (0, 6),
    (1, 10),
    (0, 1000),
    (1, 10),
    (0, 510),
    (1, 10),
    (0, 254),
    (1, 10),
    (0, 126),
    (1, 10),
    (0, 62),
    (1, 10),
    (0, 30),
    (1, 10),
    (0, 14),
    (1, 10),
    (0, 6),
    (1, 10),
    (0, 1),
    (1, 10),
    (0, 7),
    (1, 10),
    (0, 21),
    (1, 10),
    (0, 45),
    (1, 10),
    (0, 93),
    (1, 10),
    (0, 189),
    (1, 10),
    (0, 381),
    (1, 10),
    (0, 783),
    (1, 0),
    (2, 1),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 1),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 1),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 1),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 0),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 0),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 0),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 0),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 10),
    (0, 2),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 10),
    (0, 999),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
    (1, 0),
    (2, 5),
    (3, 0),
    (4, 0),
    (5, 0),
];