source: golgotha/src/i4/loaders/bmp_write.cc @ 80

Last change on this file since 80 was 80, checked in by Sam Hocevar, 12 years ago
  • Adding the Golgotha source code. Not sure what's going to be interesting in there, but since it's all public domain, there's certainly stuff to pick up.
File size: 2.0 KB
Line 
1/********************************************************************** <BR>
2  This file is part of Crack dot Com's free source code release of
3  Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
4  information about compiling & licensing issues visit this URL</a>
5  <PRE> If that doesn't help, contact Jonathan Clark at
6  golgotha_source@usa.net (Subject should have "GOLG" in it)
7***********************************************************************/
8
9#include "loaders/bmp_write.hh"
10#include "image/image.hh"
11#include "palette/pal.hh"
12#include "file/file.hh"
13
14inline void i4_32bpp_to_rgb(w32 color, w8 &r, w8 &g, w8 &b)
15{
16  r=(color>>16)&0xff;
17  g=(color>>8)&0xff;
18  b=color&0xff;
19}
20
21i4_bool i4_write_bmp(i4_image_class *im, i4_file_class *fp)
22{
23  const i4_pal *pal=im->get_pal();
24
25  if (pal->source.pixel_depth==I4_8BIT)
26  {
27    w32 w=im->width();
28    w32 h=im->height();
29    w32 store_width=(w+3)&(~3);
30    sw32 i;
31
32    w8 buf[10];
33    buf[0]='B';    buf[1]='M';
34
35    if (fp->write(buf,2)!=2) return i4_F;
36    fp->write_32(54 +
37                 4*256 +
38                 store_width * h);
39
40    fp->write_32(0);
41    fp->write_32(54 + 256*4);
42
43    fp->write_32(40);
44    fp->write_32(w);
45    fp->write_32(h);
46    fp->write_16(1);
47    fp->write_16(8);
48    fp->write_32(0);
49    fp->write_32(0);
50    fp->write_32(320);
51    fp->write_32(200);
52    fp->write_32(256);
53    fp->write_32(256);
54
55    w32 *p=pal->source.lookup;
56    for (i=0; i<256; i++)
57    {
58      w8 r,g,b;
59      i4_32bpp_to_rgb(*p,r,g,b);
60     
61      buf[0]=b;
62      buf[1]=g;
63      buf[2]=r;
64      buf[3]=0;
65
66      fp->write(buf,4);
67      p++;
68    }
69 
70    buf[0]=0;
71    buf[1]=0;
72    buf[2]=0;
73                 
74   
75    w8 *data=(w8 *)im->data;
76    for (i=h; i; i--)
77    {
78      fp->write(data, w);
79      data-=w;
80
81      if (w!=store_width)
82        fp->write(buf,w&3);
83    }
84    return i4_T;
85  }
86  else
87    return i4_F;
88}
89
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