images/duplicates.h

   1 #ifndef _IMAGES_DUP_CMP_H
   2 #define _IMAGES_DUP_CMP_H
   3
   4 struct image_dup {
   5   struct image *image;
   6   byte *tab_pixels;
   7   u32 tab_cols;
   8   u32 tab_rows;
   9   u32 tab_row_size;
  10   u32 tab_size;
  11 };
  12
  13 #define IMAGE_DUP_TRANS_ID      0x01
  14 #define IMAGE_DUP_FLIP_X        0x02
  15 #define IMAGE_DUP_FLIP_Y        0x04
  16 #define IMAGE_DUP_ROT_180       0x08
  17 #define IMAGE_DUP_FLIP_BACK     0x10
  18 #define IMAGE_DUP_ROT_CCW       0x20
  19 #define IMAGE_DUP_ROT_CW        0x40
  20 #define IMAGE_DUP_FLIP_SLASH    0x80
  21 #define IMAGE_DUP_TRANS_ALL     0xff
  22 #define IMAGE_DUP_SCALE         0x100
  23 #define IMAGE_DUP_WANT_ALL      0x200
  24
  25 /* dup-init.c */
  26
  27 uns image_dup_init(struct image_context *ctx, struct image_dup *dup, struct image *image, struct mempool *pool);
  28 uns image_dup_estimate_size(uns cols, uns rows);
  29
  30 /* dup-cmp.c */
  31
  32 uns image_dup_compare(struct image_dup *dup1, struct image_dup *dup2, uns flags);
  33
  34 /* internals */
  35
  36 static inline byte *
  37 image_dup_block(struct image_dup *dup, uns tab_col, uns tab_row)
  38 {
  39   return dup->tab_pixels + (dup->tab_row_size << tab_row) + (3 << (tab_row + tab_col));
  40 }
  41
  42
  43 #endif