00001 00002 /* ------------------------------------------- */ 00003 #define XIMG 0x58494D47 00004 00005 /* Header of GEM Image Files */ 00006 typedef struct IMG_HEADER{ 00007 short version; /* Img file format version (1) */ 00008 short length; /* Header length in words (8) */ 00009 short planes; /* Number of bit-planes (1) */ 00010 short pat_len; /* length of Patterns (2) */ 00011 short pix_w; /* Pixel width in 1/1000 mmm (372) */ 00012 short pix_h; /* Pixel height in 1/1000 mmm (372) */ 00013 short img_w; /* Pixels per line (=(x+7)/8 Bytes) */ 00014 short img_h; /* Total number of lines */ 00015 long magic; /* Contains "XIMG" if standard color */ 00016 short paltype; /* palette type (0=RGB (short each)) */ 00017 short *palette; /* palette etc. */ 00018 char *addr; /* Address for the depacked bit-planes */ 00019 } IMG_header; 00020 00021 /* ------------------------------------------- */ 00022 /* error codes */ 00023 #define ERR_HEADER 1 00024 #define ERR_ALLOC 2 00025 #define ERR_FILE 3 00026 #define ERR_DEPACK 4 00027 #define ERR_COLOR 5 00028 00029 /* saves the current colorpalette with col colors in palette */ 00030 void get_colors(int handle, short *palette, int col); 00031 00032 /* sets col colors from palette */ 00033 void img_set_colors(int handle,short *palette, int col); 00034 00035 /* converts MFDB of size from standard to deviceformat (0 if succeded, else error). */ 00036 int convert(MFDB *, long ); 00037 00038 /* transforms image in VDI-Device format */ 00039 int transform_img(MFDB *); 00040 00041 /* Loads & depacks IMG (0 if succeded, else error). */ 00042 /* Bitplanes are one after another in address IMG_HEADER.addr. */ 00043 int depack_img(char *, IMG_header *); 00044 00045 /* Halves IMG in Device-format, dest memory has to be allocated*/ 00046 int half_img(MFDB *,MFDB *);
1.7.2