lepton_jpeg 0.1.0

Rust port of the Lepton JPEG compression library
Documentation 
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/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 *  This software incorporates material from third parties. See Notices.txt for details.
 *----------------------------------------/----------------------------------------------------*/

use crate::consts::COLOR_CHANNEL_NUM_BLOCK_TYPES;

use super::probability_tables::ProbabilityTables;

pub struct ProbabilityTablesSet {
    pub corner: [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES],
    pub top: [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES],
    pub mid_left: [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES],
    pub middle: [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES],
    pub mid_right: [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES],
    pub width_one: [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES],
}

fn make_probability_tables_tuple(
    left: bool,
    above: bool,
) -> [ProbabilityTables; COLOR_CHANNEL_NUM_BLOCK_TYPES] {
    return [
        ProbabilityTables::new(0, left, above),
        ProbabilityTables::new(1, left, above),
        ProbabilityTables::new(2, left, above),
    ];
}

impl ProbabilityTablesSet {
    pub fn new() -> Self {
        return ProbabilityTablesSet {
            corner: make_probability_tables_tuple(false, false),
            top: make_probability_tables_tuple(true, false),
            mid_left: make_probability_tables_tuple(false, true),
            middle: make_probability_tables_tuple(true, true),
            mid_right: make_probability_tables_tuple(true, true),
            width_one: make_probability_tables_tuple(false, true),
        };
    }
}