static void pixels_to_colours(int *colours, unsigned char *pixels,
int width, int height, int x)
{
int i = height;
int *colour = colours;
unsigned char *rgb = &pixels[3*x];
while (--i>=0)
{
*colour = palette_getindex(rgb);
colour++;
rgb += 3*width;
}
}
size_t ppm_to_bitmap(void **lumpdata, const char *filename)
{
void *data;
size_t size = read_or_die(&data, filename);
int i, j, width, height;
unsigned char *pixels, *bitmap;
pixels = parseppm(data, size, filename, &width, &height);
bitmap = xmalloc(width * height);
for (j = 0; j < height; j++)
for (i = 0; i < width; i++)
bitmap[width*j+i] = palette_getindex(&pixels[3*(width*j+i)]);
free(data);
*lumpdata = bitmap;
return width * height;
}
