GGI - problem(ggiMapColor)

[thomas . raschbacher]

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hi!
I've a problem wit a program that loads a palette from a file(RGB a 1Byte).
ggiMapColor always returns 0.

can anyone help me please?

bye
/* testpal.c */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <ggi/ggi.h>

#define SUCCESS 0x00
#define ERROR -1

#define FIL_PAL_NAM "palette.dat"
#define PALENT 256

typedef struct {
  char r;
  char g;
  char b;
} pal_fmt;

int main(int argc, char **argv)
{
  ggi_visual_t vis;
  ggi_mode mode = {
    1,
    {GGI_AUTO, GGI_AUTO},
    {GGI_AUTO, GGI_AUTO},
    {0, 0},
    GT_AUTO,
    {GGI_AUTO, GGI_AUTO}
  };

  ggi_color pal[PALENT];
  ggi_pixel ppal[PALENT];

  pal_fmt palf[PALENT];
  FILE *fil_pal;

  int nd = 0;

  if((fil_pal = open(FIL_PAL_NAM, O_RDWR)) == -1) {
    fprintf(stderr, "could not open file %s", FIL_PAL_NAM);
    exit(1);
  }

  if (ggiInit() != 0) {
    fprintf(stderr, "unable to init ggi\n");
    return ERROR;
  };
  vis = ggiOpen(NULL);
  if (vis == NULL) {
    fprintf(stderr, "unable to open visible\n");
    return ERROR;
  };
  ggiSetFlags(vis, GGIFLAG_ASYNC);

  ggiCheckMode(vis, &mode);
  ggiSetMode(vis, &mode);

  read(fil_pal, &palf[0], PALENT*3);
  close(fil_pal);
  
  for(nd = 0; nd < PALENT; nd++) {
    pal[nd].r = (uint16) palf[nd].r;
    pal[nd].g = (uint16) palf[nd].g;
    pal[nd].b = (uint16) palf[nd].b;
    ppal[nd] = ggiMapColor(vis, &(pal[nd]));
    fprintf(stderr, "color 0x%2X: palf: 0x%2X 0x%2X 0x%2X - pal: 0x%2X 0x%2X 0x%2X --- 
ppal: 0x%2X\n",
            nd,
            palf[nd].r,
            palf[nd].g,
            palf[nd].b,
            pal[nd].r,
            pal[nd].g,
            pal[nd].b,
            ppal[nd]
            );
  }
  
  ggiSetGCForeground(vis, ppal[0]);
  ggiFillscreen(vis);
  ggiFlush(vis);
  
  for(nd = 0; nd < PALENT; nd++) {
    ggiSetGCForeground(vis, ppal[nd]);
    ggiDrawHLine(vis, 0, nd, 500);
  }

  ggiFlush(vis);
  ggiGetc(vis);
  ggiClose(vis);
  ggiExit();
}

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