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