decode_quirks.wuffs

// Copyright 2024 The Wuffs Authors.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//
// SPDX-License-Identifier: Apache-2.0 OR MIT

// --------

// Quirks are discussed in (/doc/note/quirks.md).
//
// The base38 encoding of "th.." is 0x19_83D8. Left shifting by 10 gives
// 0x660F_6000.
pri const QUIRKS_BASE : base.u32 = 0x660F_6000

// --------

// When this quirk is enabled, the decoder speaks just raw thumbhash, without
// the "\xC3\xBE\xFE" magic identifier to start the file.
//
// Enabling this quirk matches the behavior of the original JavaScript
// reference implementation at https://evanw.github.io/thumbhash/
pub const QUIRK_JUST_RAW_THUMBHASH : base.u32 = 0x660F_6000 | 0x00