encode_method_1027.h

Go to the documentation of this file.

#pragma once
 
/*
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * (c) 2020 Juergen Borleis <projects@caps-printing.org>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of bthe License, or (at your option)
 * any later version.
 */
 
#include <stdint.h>
#ifndef ALGO_TESTING
# include <libcapsbase.h>
#endif
 
#include <stdbool.h>
 
struct cm1027_block_data_header {
    uint16_t border_left; 
    uint16_t border_top; 
    uint8_t line_cnt; 
    uint16_t word_cnt; 
    uint16_t data[0]; 
} __packed;
 
struct cm1027_block_header
{
    uint16_t data_size; 
    struct cm1027_block_data_header data;
} __packed;
 
#define C1027_LINE_LENGTH 640
 
struct cm1027_line {
    uint16_t data[C1027_LINE_LENGTH]; 
    size_t idx; 
};
 
struct cm1027_block {
    uint16_t *out; 
    size_t avail_cnt; 
    size_t bused_cnt; 
    size_t blines; 
    int block_started; 
    unsigned top; 
    unsigned left; 
    unsigned pcnt; 
    size_t llength; 
};
#define C1027_MAX_LINES_IN_ONE_BAND 64
#define C1027_MAX_WORDS_IN_ONE_BLOCK 0x7FFC
 
void hl_c1027_block_init(struct cm1027_block *block, unsigned llength) __nonnull();
void hl_c1027_block_exit(struct cm1027_block *block) __nonnull();
bool hl_c1027_line_check_if_empty(unsigned cnt, const uint16_t line[cnt]) __nonnull() __pure;
void hl_c1027_line_encode(struct cm1027_line *cline, unsigned cnt, const uint16_t line[cnt], const uint16_t *prev) __nonnull((1,3));
int hl_c1027_block_line_add(struct cm1027_block *block, const struct cm1027_line *line, FILE *outstream) __nonnull();
int hl_c1027_block_line_twin_add(struct cm1027_block *block, const struct cm1027_line *line, unsigned cnt, FILE *outstream) __nonnull();
int hl_c1027_block_flush(struct cm1027_block *block, FILE *outstream) __nonnull();