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  1. /* Written by turbocat2001 (Logaev Maxim) */
  2.  
  3. #ifndef KOLIBRI_LIBIMG_H
  4. #define KOLIBRI_LIBIMG_H
  5.  
  6. #include <stddef.h>
  7. #include <stdbool.h>
  8.  
  9. extern int kolibri_libimg_init(void);
  10.  
  11. #define _stdcall __attribute__((__stdcall__))
  12.  
  13. //list of format id's
  14. #define LIBIMG_FORMAT_BMP       1
  15. #define LIBIMG_FORMAT_ICO       2
  16. #define LIBIMG_FORMAT_CUR       3
  17. #define LIBIMG_FORMAT_GIF       4
  18. #define LIBIMG_FORMAT_PNG       5
  19. #define LIBIMG_FORMAT_JPEG      6
  20. #define LIBIMG_FORMAT_TGA       7
  21. #define LIBIMG_FORMAT_PCX       8
  22. #define LIBIMG_FORMAT_XCF       9
  23. #define LIBIMG_FORMAT_TIFF      10
  24. #define LIBIMG_FORMAT_PNM       11
  25. #define LIBIMG_FORMAT_WBMP      12
  26. #define LIBIMG_FORMAT_XBM       13
  27. #define LIBIMG_FORMAT_Z80       14
  28.  
  29. #pragma pack(push, 1)
  30. typedef struct{
  31.   uint32_t Checksum; // ((Width ROL 16) OR Height) XOR Data[0]        ; ignored so far
  32.   uint32_t Width;
  33.   uint32_t Height;
  34.   uint32_t Next;
  35.   uint32_t Previous;
  36.   uint32_t Type;     // one of Image.bppN
  37.   uint32_t* Data;
  38.   uint32_t Palette;  // used iff Type eq Image.bpp1, Image.bpp2, Image.bpp4 or Image.bpp8i
  39.   uint32_t Extended;
  40.   uint32_t Flags;    // bitfield
  41.   uint32_t Delay;    // used iff Image.IsAnimated is set in Flags
  42. } Image;
  43. #pragma pack(pop)
  44.  
  45. #define IMAGE_BPP8i  1  // indexed
  46. #define IMAGE_BPP24  2
  47. #define IMAGE_BPP32  3
  48. #define IMAGE_BPP15  4
  49. #define IMAGE_BPP16  5
  50. #define IMAGE_BPP1   6
  51. #define IMAGE_BPP8g  7  // grayscale
  52. #define IMAGE_BPP2i  8
  53. #define IMAGE_BPP4i  9
  54. #define IMAGE_BPP8a 10
  55.  
  56. // scale type
  57. #define LIBIMG_SCALE_NONE       0
  58. #define LIBIMG_SCALE_INTEGER    1  
  59. #define LIBIMG_SCALE_TILE       2    
  60. #define LIBIMG_SCALE_STRETCH    3  
  61. #define LIBIMG_SCALE_FIT_BOTH   LIBIMG_SCALE_STRETCH
  62. #define LIBIMG_SCALE_FIT_MIN    4
  63. #define LIBIMG_SCALE_FIT_RECT   LIBIMG_SCALE_FIT_MIN
  64. #define LIBIMG_SCALE_FIT_WIDTH  5  
  65. #define LIBIMG_SCALE_FIT_HEIGHT 6
  66. #define LIBIMG_SCALE_FIT_MAX    7    
  67.  
  68. // interpolation algorithm
  69. #define LIBIMG_INTER_NONE       0     // use it with LIBIMG_SCALE_INTEGER, LIBIMG_SCALE_TILE, etc
  70. #define LIBIMG_INTER_BILINEAR   1
  71. #define LIBIMG_INTER_BICUBIC    2
  72. #define LIBIMG_INTER_LANCZOS    3
  73. #define LIBIMG_INTER_DEFAULT   LIBIMG_INTER_BILINEAR
  74.  
  75. //error codes
  76. #define LIBIMG_ERROR_OUT_OF_MEMORY      1
  77. #define LIBIMG_ERROR_FORMAT             2
  78. #define LIBIMG_ERROR_CONDITIONS         3
  79. #define LIBIMG_ERROR_BIT_DEPTH          4
  80. #define LIBIMG_ERROR_ENCODER            5
  81. #define LIBIMG_ERROR_SRC_TYPE           6
  82. #define LIBIMG_ERROR_SCALE              7
  83. #define LIBIMG_ERROR_INTER              8
  84. #define LIBIMG_ERROR_NOT_INPLEMENTED    9
  85. #define LIBIMG_ERROR_INVALID_INPUT      10
  86.  
  87. //encode flags (byte 0x02 of _common option)
  88. #define LIBIMG_ENCODE_STRICT_SPECIFIC   0x01
  89. #define LIBIMG_ENCODE_STRICT_BIT_DEPTH  0x02
  90. #define LIBIMG_ENCODE_DELETE_ALPHA      0x08
  91. #define LIBIMG_ENCODE_FLUSH_ALPHA       0x10
  92.  
  93. #define FLIP_VERTICAL   0x01
  94. #define FLIP_HORIZONTAL 0x02
  95.  
  96. #define ROTATE_90_CW    0x01
  97. #define ROTATE_180      0x02
  98. #define ROTATE_270_CW   0x03
  99. #define ROTATE_90_CCW   ROTATE_270_CW
  100. #define ROTATE_270_CCW  ROTATE_90_CW
  101.  
  102. extern Image*   (*img_decode)(void* file_data, uint32_t size, uint32_t b_color) _stdcall;
  103. extern Image*   (*img_encode)(Image* img, uint32_t length, uint32_t option) _stdcall;
  104. extern Image*   (*img_create)(uint32_t width, uint32_t height, uint32_t type) _stdcall;
  105. extern void     (*img_to_rgb2)(Image* img, void *rgb_data) _stdcall;
  106. extern Image*   (*img_to_rgb)(Image* img) _stdcall;
  107. extern bool     (*img_flip)(Image* img, uint32_t flip) _stdcall;
  108. extern bool     (*img_flip_layer)(Image *img, uint32_t flip) _stdcall;
  109. extern bool     (*img_rotate)(Image *img, uint32_t rotate) _stdcall;
  110. extern bool     (*img_rotate_layer)(Image* data, uint32_t rotate) _stdcall;
  111. extern void     (*img_draw)(Image *img, uint32_t x, uint32_t y, uint32_t w, uint32_t h, uint32_t xoff,  uint32_t yoff) _stdcall;
  112. extern int32_t  (*img_count)(Image *img) _stdcall;
  113. extern bool     (*img_destroy)(Image *img) _stdcall;
  114. extern bool     (*img_destroy_layer)(Image* img) _stdcall;
  115. extern Image*   (*img_blend)(Image* dst, Image* src, uint32_t out_x, uint32_t out_y, uint32_t in_x, uint32_t in_y, uint32_t width, uint32_t height) _stdcall;
  116. extern Image*   (*img_convert)(Image *src, Image *dst, uint32_t dst_type, uint32_t, uint32_t) _stdcall;
  117. extern Image*   (*img_resize_data)(Image *src, uint32_t width, uint32_t height) _stdcall;
  118. extern Image*   (*img_scale)(Image* src, uint32_t crop_x, uint32_t crop_y, uint32_t crop_width, uint32_t crop_height, Image* dst, uint32_t scale_type, uint32_t inter, uint32_t new_width, uint32_t new_height) _stdcall;
  119.  
  120. void img_fill_color(Image* img, uint32_t width, uint32_t height, uint32_t color) {
  121.     uint32_t i;
  122.     for (i = 0; i < width*height; i++) {
  123.         img->Data[i] = color;
  124.     }
  125. }
  126.  
  127. #endif /* KOLIBRI_LIBIMG_H */
  128.