include/upng.hpp - main - pixelsuft/tinyfoo

include/upng.hpp
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Pixelsuft
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22 июн 2025, 08:11
22 июн 2025, 08:1119e95cd
/*
uPNG -- derived from LodePNG version 20100808

Copyright (c) 2005-2010 Lode Vandevenne
Copyright (c) 2010 Sean Middleditch

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

        1. The origin of this software must not be misrepresented; you must not
        claim that you wrote the original software. If you use this software
        in a product, an acknowledgment in the product documentation would be
        appreciated but is not required.

        2. Altered source versions must be plainly marked as such, and must not be
        misrepresented as being the original software.

        3. This notice may not be removed or altered from any source
        distribution.
*/

#pragma once
#include <lbs.hpp>

#if ENABLE_UPNG
typedef enum upng_error {
    UPNG_EOK = 0,
    UPNG_ENOMEM = 1,
    UPNG_ENOTFOUND = 2,
    UPNG_ENOTPNG = 3,
    UPNG_EMALFORMED = 4,
    UPNG_EUNSUPPORTED = 5,
    UPNG_EUNINTERLACED = 6,
    UPNG_EUNFORMAT = 7,
    UPNG_EPARAM = 8
} upng_error;

typedef enum upng_format {
    UPNG_BADFORMAT,
    UPNG_RGB8,
    UPNG_RGB16,
    UPNG_RGBA8,
    UPNG_RGBA16,
    UPNG_LUMINANCE1,
    UPNG_LUMINANCE2,
    UPNG_LUMINANCE4,
    UPNG_LUMINANCE8,
    UPNG_LUMINANCE_ALPHA1,
    UPNG_LUMINANCE_ALPHA2,
    UPNG_LUMINANCE_ALPHA4,
    UPNG_LUMINANCE_ALPHA8,
    UPNG_INDEX1,
    UPNG_INDEX2,
    UPNG_INDEX4,
    UPNG_INDEX8
} upng_format;

typedef struct upng_t upng_t;

upng_t *upng_new_from_bytes(const unsigned char *buffer, unsigned long size);
void upng_free(upng_t *upng);

upng_error upng_header(upng_t *upng);
upng_error upng_decode(upng_t *upng);

upng_error upng_get_error(const upng_t *upng);
unsigned upng_get_error_line(const upng_t *upng);

unsigned upng_get_width(const upng_t *upng);
unsigned upng_get_height(const upng_t *upng);
unsigned upng_get_bpp(const upng_t *upng);
unsigned upng_get_bitdepth(const upng_t *upng);
unsigned upng_get_components(const upng_t *upng);
unsigned upng_get_pixelsize(const upng_t *upng);
upng_format upng_get_format(const upng_t *upng);

const unsigned char *upng_get_buffer(const upng_t *upng);
unsigned upng_get_size(const upng_t *upng);
const unsigned char *upng_get_palette(const upng_t *upng);
#endif