plugins/imageq2/wal32.cpp

   1 /*
   2    Copyright (C) 2001-2006, William Joseph.
   3    All Rights Reserved.
   4
   5    This file is part of GtkRadiant.
   6
   7    GtkRadiant is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    GtkRadiant is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GtkRadiant; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #include "wal32.h"
  23
  24 #include "ifilesystem.h"
  25
  26 #include "bytestreamutils.h"
  27 #include "imagelib.h"
  28
  29 typedef unsigned char byte;
  30
  31 const int M32_NAME_LENGTH = 128;
  32 const int M32_MIPMAP_COUNT = 16;
  33
  34 typedef struct m32_header_t
  35 {
  36         int version;
  37         char name[M32_NAME_LENGTH];
  38         char altname[M32_NAME_LENGTH];                      // texture substitution
  39         char animname[M32_NAME_LENGTH];                     // next frame in animation chain
  40         char damagename[M32_NAME_LENGTH];                   // image that should be shown when damaged
  41         unsigned width[M32_MIPMAP_COUNT], height[M32_MIPMAP_COUNT];
  42         unsigned offsets[M32_MIPMAP_COUNT];
  43         int flags;
  44         int contents;
  45         int value;
  46         float scale_x, scale_y;
  47         int mip_scale;
  48
  49         // detail texturing info
  50         char dt_name[M32_NAME_LENGTH];              // detailed texture name
  51         float dt_scale_x, dt_scale_y;
  52         float dt_u, dt_v;
  53         float dt_alpha;
  54         int dt_src_blend_mode, dt_dst_blend_mode;
  55
  56         int unused[20];                         // future expansion to maintain compatibility with h2
  57 } m32_header_t;
  58
  59
  60 Image* LoadM32Buff( byte* buffer ){
  61         PointerInputStream inputStream( buffer );
  62
  63         inputStream.seek( 4 // version
  64                                           + M32_NAME_LENGTH // name
  65                                           + M32_NAME_LENGTH // altname
  66                                           + M32_NAME_LENGTH // animname
  67                                           + M32_NAME_LENGTH ); // damagename
  68         int w = istream_read_uint32_le( inputStream );
  69         inputStream.seek( 4 * ( M32_MIPMAP_COUNT - 1 ) ); // remaining widths
  70         int h = istream_read_uint32_le( inputStream );
  71         inputStream.seek( 4 * ( M32_MIPMAP_COUNT - 1 ) ); // remaining heights
  72         int offset = istream_read_uint32_le( inputStream );
  73         inputStream.seek( 4 * ( M32_MIPMAP_COUNT - 1 ) ); // remaining offsets
  74         int flags = istream_read_uint32_le( inputStream );
  75         int contents = istream_read_uint32_le( inputStream );
  76         int value = istream_read_uint32_le( inputStream );
  77
  78         RGBAImageFlags* image = new RGBAImageFlags( w, h, flags, contents, value );
  79
  80         const byte* source = buffer + offset;
  81         std::copy( source, source + ( w * h * 4 ), image->getRGBAPixels() );
  82
  83         return image;
  84 }
  85
  86 Image* LoadM32( ArchiveFile& file ){
  87         ScopedArchiveBuffer buffer( file );
  88         return LoadM32Buff( buffer.buffer );
  89 }