n_tiff.h

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/*
 * Nilorea Library
 * Copyright (C) 2005-2026 Castagnier Mickael
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

 
#ifndef N_TIFF_HEADER_GUARD
#define N_TIFF_HEADER_GUARD
 
#ifdef __cplusplus
extern "C" {
#endif

 
#include <stddef.h>
#include <stdint.h>

#define N_TIFF_MAGIC 42
#define N_TIFF_MAGIC_DCP 0x4352

typedef struct N_TIFF_ENTRY {
    uint16_t tag;
    uint16_t type;
    uint32_t count;
    size_t offset;
} N_TIFF_ENTRY;

typedef struct N_TIFF {
    const unsigned char* data;
    size_t len;
    int big_endian;
    uint16_t magic;
    N_TIFF_ENTRY* entries;
    size_t count;
} N_TIFF;

N_TIFF* n_tiff_parse(const unsigned char* data, size_t len);

void n_tiff_free(N_TIFF** tiff);

const N_TIFF_ENTRY* n_tiff_find(const N_TIFF* tiff, uint16_t tag);

size_t n_tiff_count(const N_TIFF* tiff, uint16_t tag);

size_t n_tiff_get_doubles(const N_TIFF* tiff, uint16_t tag, double* out, size_t max);

int n_tiff_get_ascii(const N_TIFF* tiff, uint16_t tag, char* out, size_t out_len);

 
#ifdef __cplusplus
}
#endif
 
#endif