ds_png.h

/* Copyright (C) 2017 - 2024, Thornwave Labs Inc - All Rights Reserved.
 * Unauthorized copying of this file, via any medium is strictly prohibited.
 * Proprietary and confidential.
 * Written by Razvan Turiac <razvan.turiac@thornwave.com>
*/
 
#ifndef _DS_PNG_H
#define _DS_PNG_H
 
 
#include <stdint.h>
#include <stddef.h>
 
#include <ds_surface.h>
 
 
typedef enum
{
    PNG_STS_SUCCESS = 0,
    PNG_STS_INVALID,
    PNG_STS_UNSUPPORTED,
    PNG_STS_INVALID_SURFACE,
}ds_png_sts_t;
 
 
enum
{
    PNG_IHDR_CT_GRAYSCALE = 0,
    PNG_IHDR_CT_TRUECOLOR = 2,
    PNG_IHDR_CT_INDEXED = 3,
    PNG_IHDR_CT_GRAYSCALE_ALPHA = 4,
    PNG_IHDR_CT_TRUECOLOR_ALPHA = 6
};
 
 
enum
{
    PNG_IHDR_COMPRESSION_DEFLATE = 0
};
 
 
enum
{
    PNG_IHDR_FILTER_STANDARD = 0,
};
 
 
enum
{
    PNG_IHDR_INTERLACE_NONE = 0,
    PNG_IHDR_INTERLACE_ADAM7 = 1,
};
 
 
 
typedef struct
{
    uint32_t width;
    uint32_t height;
    uint8_t bit_depth;
    uint8_t color_type;              
    uint8_t compression;
    uint8_t filter;
    uint8_t interlace;
    
    bool plte_has_alpha;
 
    DsColorMode color_mode;
    uint16_t plte_size;
 
}ds_png_descriptor_t;
 
 
DsSurface* ds_create_surface_from_png(const void* source, size_t size, bool alpha_only = false, DsRotation rotation = DsRotation::R0_DEG);
 
 
bool ds_update_surface_from_png(const void *source, size_t size, bool alpha_only, DsSurface &surface);
 
#endif