utils/wpextract.c

   1 #include <leptonica/allheaders.h>
   2 #pragma RcB2 LINK "-llept"
   3 #include <stdio.h>
   4 #include <assert.h>
   5
   6 void copy_rect(int x, int y, int w, int h, void* inbuf, unsigned in_pitch, void* outbuf) {
   7         uint32_t*ptr = (uint32_t*) inbuf;
   8         uint32_t*out = (uint32_t*) outbuf;
   9         int ix, iy;
  10         for(iy = y; iy < y+h; iy++) for (ix = x; ix < x+w; ix++) {
  11                 *out++ = ptr[iy*in_pitch + ix];
  12         }
  13 }
  14
  15 int main(int argc, char**argv) {
  16         if(argc != 3) {
  17                 dprintf(2, "%s in.png out.png\n", argv[0]);
  18                 return 1;
  19         }
  20         const char *in = argv[1];
  21         const char *out = argv[2];
  22         struct Pix* pin = pixRead(in);
  23         struct Pix* pin32 = pixConvertTo32(pin);
  24         struct Pix* pout = pixCreate(59, 16*30, 32);
  25
  26         int xo = 0, yo = 0, i;
  27         uint32_t *od = (void*) pout->data;
  28         for(i = 0; i < 30; i++) {
  29                 int xi = 3 + (i % 5) * 64;
  30                 int yi = 5 + (i / 5) * 23;
  31                 copy_rect(xi, yi, 59, 16, (void*) pin32->data, pin32->w, od);
  32                 od += 16*59;
  33         }
  34         pixWritePng(out, pout, 0);
  35         return 0;
  36 }