zoom_book.h

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#pragma once
 
#include <stdint.h>
 
#include "book.h"
#include "book_paged.h"
#include "ra8_err.h"
#include "zoom.h"

typedef struct {
  const book_src_t* src; 
  book_image_t      img; 
} zoom_book_src_t;

[[nodiscard]] ra8_err_t
zoom_book_src_init(zoom_book_src_t* bs, const book_src_t* src, uint32_t img_idx);

[[nodiscard]] ra8_err_t zoom_book_src_bind(zoom_book_src_t* bs, zoom_source_t* out);

[[nodiscard]] ra8_err_t zoom_book_read(void*    ctx,
                                       uint32_t x,
                                       uint32_t y,
                                       uint32_t w,
                                       uint32_t h,
                                       uint8_t* out,
                                       uint32_t out_stride);