Datafile Creation

Datafile Creation

Rick

Member #3,572

June 2003

Via http://alleg.sourceforge.net/onlinedocs/en/datafile.html

Quote:

DAT_BITMAP =
DAT_C_SPRITE =
DAT_XC_SPRITE =
16 bit - <bits> - bitmap color depth
16 bit - <width> - bitmap width
16 bit - <height> - bitmap height
var - <data> - bitmap data

What is var for bitmap data supposed to be? A BITMAP structure or just the bytes that make up the bitmap.

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Actually I think I'm a tad ugly, but some women disagree, mostly Asians for some reason.

Evert

Member #794

November 2000

I think it's the raw data for each scanline one after the other, but why don't you check the code in allegro/tools/plugins/datimage.c?

Rick

Member #3,572

June 2003

Didn't know to look there. It looks like it is the raw image data

 pack_mputw(depth, f);
 pack_mputw(bmp->w, f);
 pack_mputw(bmp->h, f);
4 
 switch (depth) {
    case 16:
 /* hicolor */
 for (y=0; y<bmp->h; y++) {
    p16 = (uint16_t *)bmp->line[y];
10 
    for (x=0; x<bmp->w; x++) {
       c = p16[x];
       r = getr_depth(depth, c);
       g = getg_depth(depth, c);
       b = getb_depth(depth, c);
       c = ((r<<8)&0xF800) | ((g<<3)&0x7E0) | ((b>>3)&0x1F);
       pack_iputw(c, f);
    }
 }
 break;

Now I just have to figure out a way to do this in VB.NET. The way I'm doing it must be incorrect as the image looks all messed up in the grabber.

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Actually I think I'm a tad ugly, but some women disagree, mostly Asians for some reason.