Source:NetHack 3.6.0/include/load img.h

Below is the full text to load_img.h from the source code of NetHack 3.6.0. To link to a particular line, write [[Source:NetHack 3.6.0/include/load_img.h#line123]], for example.

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 /* ------------------------------------------- */
 #define XIMG 0x58494D47
 
 /* Header of GEM Image Files   */
 typedef struct IMG_HEADER {
     short version;  /* Img file format version (1) */
     short length;   /* Header length in words  (8) */
     short planes;   /* Number of bit-planes    (1) */
     short pat_len;  /* length of Patterns      (2) */
     short pix_w;    /* Pixel width in 1/1000 mmm  (372)    */
     short pix_h;    /* Pixel height in 1/1000 mmm (372)    */
     short img_w;    /* Pixels per line (=(x+7)/8 Bytes)    */
     short img_h;    /* Total number of lines               */
     long magic;     /* Contains "XIMG" if standard color   */
     short paltype;  /* palette type (0=RGB (short each)) */
     short *palette; /* palette etc.                        */
     char *addr;     /* Address for the depacked bit-planes */
 } IMG_header;
 
 /* ------------------------------------------- */
 /* error codes */
 #define ERR_HEADER 1
 #define ERR_ALLOC 2
 #define ERR_FILE 3
 #define ERR_DEPACK 4
 #define ERR_COLOR 5
 
 /* saves the current colorpalette with col colors in palette */
 void get_colors(int handle, short *palette, int col);
 
 /* sets col colors from palette */
 void img_set_colors(int handle, short *palette, int col);
 
 /* converts MFDB  of size from standard to deviceformat (0 if succeded, else
  * error). */
 int convert(MFDB *, long);
 
 /* transforms image in VDI-Device format */
 int transform_img(MFDB *);
 
 /* Loads & depacks IMG (0 if succeded, else error). */
 /* Bitplanes are one after another in address IMG_HEADER.addr. */
 int depack_img(char *, IMG_header *);
 
 /* Halves IMG in Device-format, dest memory has to be allocated*/
 int half_img(MFDB *, MFDB *);