// DD Image Lib

#pragma once

#include <stdint.h>
#include <stdbool.h>
#include "dd_image_config.h"

typedef enum
{
    DD_IMG_OK                   = 0,
    DD_IMG_ERR_INVALID_ARG      = -1,
    DD_IMG_ERR_UNKNOWN_FORMAT   = -2,
    DD_IMG_ERR_INVALID_BMP      = -3,
    DD_IMG_ERR_INVALID_TGA      = -4,
    DD_IMG_ERR_INVALID_PVR      = -5,

    DD_IMG_ERR_MAX              = 0xFFFF
} dd_img_error_t;

typedef enum
{
    DD_IMG_FORMAT_INVALID           = 0,
    DD_IMG_FORMAT_A8                = 1,
    DD_IMG_FORMAT_L8                = 2,
    DD_IMG_FORMAT_LA8               = 3,
    DD_IMG_FORMAT_RGB8              = 4,
    DD_IMG_FORMAT_RGBA8             = 5,

    DD_IMG_FORMAT_RGB_PVRTC1_2      = 6,
    DD_IMG_FORMAT_RGBA_PVRTC1_2     = 7,
    DD_IMG_FORMAT_RGB_PVRTC1_4      = 8,
    DD_IMG_FORMAT_RGBA_PVRTC1_4     = 9,
    DD_IMG_FORMAT_PVRTC2_2          = 10,
    DD_IMG_FORMAT_PVRTC2_4          = 11,

    DD_IMG_FORMAT_MAX               = 0xFF
} dd_img_format_t;

typedef struct dd_img_t dd_img_t;

typedef dd_img_error_t (*dd_img_data_read)(void * userdata, size_t read_from, void * buffer, size_t read_size);

dd_img_error_t dd_img_open(dd_img_data_read read_func, void * userdata, size_t * need_buffer_size, dd_img_format_t * format);
dd_img_error_t dd_img_read(dd_img_t ** image, void * buffer, size_t buffer_size, dd_img_data_read read_func, void * userdata);

dd_img_error_t dd_img_get_size(dd_img_t * image, size_t * size); // return buffer_size
dd_img_error_t dd_img_get_format(dd_img_t * image, dd_img_format_t * format);
dd_img_error_t dd_img_get_is_compressed(dd_img_t * image, uint8_t * is_compressed);
dd_img_error_t dd_img_mipmap_get_count(dd_img_t * image, uint8_t * mipmap_count);
dd_img_error_t dd_img_mipmap_get_size(dd_img_t * image, uint8_t mipmap, uint16_t * width, uint16_t * height);
dd_img_error_t dd_img_mipmap_get_raw(dd_img_t * image, uint8_t mipmap, void ** data, uint32_t * size);

const char * dd_img_get_error_text(dd_img_error_t error);