c
static int is_valid_color_space(int color_space) {
  switch (color_space) {
    case JCS_GRAYSCALE:
    case JCS_RGB:
    case JCS_CMYK:
    case JCS_YCCK:
    case JCS_RGB565: 
      // ... other valid color spaces
      return 1;
    default:
      return 0;
  }
}

static int jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2, ...) {
  // ...
  if (cinfo->out_color_space == JCS_GRAYSCALE) {
    // ...
  } else if (IsExtRGB(cinfo->out_color_space)) {
    // ...
  } else if (is_valid_color_space(cinfo->out_color_space)) { 
    // ...
  } else {
    // Handle invalid color space
    return -1; // Or handle the error appropriately
  }
  // ...
}
