reflow_image.h

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#pragma once
 
#include <stddef.h>
#include <stdint.h>
 
#include "ra8_err.h"

typedef struct {
  uint8_t* base;   
  size_t   cap;    
  size_t   offset; 
  size_t   live;   
} ra8_img_arena_t;

[[nodiscard]] ra8_err_t ra8_img_decode_blit(ra8_img_arena_t* arena,
                                            const uint8_t*   bytes,
                                            size_t           len,
                                            int32_t          dst_x,
                                            int32_t          dst_y,
                                            int32_t          box_w,
                                            int32_t          box_h,
                                            int32_t*         out_w,
                                            int32_t*         out_h);

[[nodiscard]] ra8_err_t
ra8_img_probe_size(const uint8_t* bytes, size_t len, int32_t* out_w, int32_t* out_h);