gemrb/plugins/MOSImporter/MOSImp.cpp

   1 /* GemRB - Infinity Engine Emulator
   2  * Copyright (C) 2003 The GemRB Project
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * $Id$
  19  *
  20  */
  21
  22 #include "../../includes/win32def.h"
  23 #include "MOSImp.h"
  24 #include "../../includes/RGBAColor.h"
  25 #include "../Core/Compressor.h"
  26 #include "../Core/FileStream.h"
  27 #include "../Core/CachedFileStream.h"
  28 #include "../Core/Interface.h"
  29 #include "../Core/Video.h"
  30
  31 static ieDword red_mask = 0xff000000;
  32 static ieDword green_mask = 0x00ff0000;
  33 static ieDword blue_mask = 0x0000ff00;
  34
  35 MOSImp::MOSImp(void)
  36 {
  37         if (DataStream::IsEndianSwitch()) {
  38                 red_mask = 0x000000ff;
  39                 green_mask = 0x0000ff00;
  40                 blue_mask = 0x00ff0000;
  41         }
  42 }
  43
  44 MOSImp::~MOSImp(void)
  45 {
  46 }
  47
  48 bool MOSImp::Open(DataStream* stream, bool autoFree)
  49 {
  50         if (!Resource::Open(stream, autoFree))
  51                 return false;
  52         str = stream;
  53         char Signature[8];
  54         str->Read( Signature, 8 );
  55         if (strncmp( Signature, "MOSCV1  ", 8 ) == 0) {
  56                 char cpath[_MAX_PATH];
  57                 strcpy( cpath, core->CachePath );
  58                 strcat( cpath, stream->filename );
  59                 FILE* exist_in_cache = fopen( cpath, "rb" );
  60                 if (exist_in_cache) {
  61                         //File was previously cached, using local copy
  62                         if (autoFree)
  63                                 delete( str );
  64                         fclose( exist_in_cache );
  65                         FileStream* s = new FileStream();
  66                         s->Open( cpath );
  67                         str = s;
  68                         str->Read( Signature, 8 );
  69                 } else {
  70                         //No file found in Cache, Decompressing and storing for further use
  71                         str->Seek( 4, GEM_CURRENT_POS );
  72
  73                         if (!core->IsAvailable( IE_COMPRESSION_CLASS_ID )) {
  74                                 printf( "No Compression Manager Available.\nCannot Load Compressed Mos File.\n" );
  75                                 return false;
  76                         }
  77                         FILE* newfile = fopen( cpath, "wb" );
  78                         Compressor* comp = ( Compressor* )
  79                                 core->GetInterface( IE_COMPRESSION_CLASS_ID );
  80                         comp->Decompress( newfile, str );
  81                         core->FreeInterface( comp );
  82                         fclose( newfile );
  83                         if (autoFree)
  84                                 delete( str );
  85                         FileStream* s = new FileStream();
  86                         s->Open( cpath );
  87                         str = s;
  88                         str->Read( Signature, 8 );
  89                 }
  90         }
  91         if (strncmp( Signature, "MOS V1  ", 8 ) != 0) {
  92                 return false;
  93         }
  94         str->ReadWord( &Width );
  95         str->ReadWord( &Height );
  96         str->ReadWord( &Cols );
  97         str->ReadWord( &Rows );
  98         str->ReadDword( &BlockSize );
  99         str->ReadDword( &PalOffset );
 100         return true;
 101 }
 102
 103 Sprite2D* MOSImp::GetImage()
 104 {
 105         RevColor RevCol[256];
 106         unsigned char * pixels = ( unsigned char * ) malloc( Width * Height * 4 );
 107         unsigned char * blockpixels = ( unsigned char * )
 108                 malloc( BlockSize * BlockSize );
 109         ieDword blockoffset;
 110         for (int y = 0; y < Rows; y++) {
 111                 int bh = ( y == Rows - 1 ) ?
 112                         ( ( Height % 64 ) == 0 ? 64 : Height % 64 ) :
 113                         64;
 114                 for (int x = 0; x < Cols; x++) {
 115                         int bw = ( x == Cols - 1 ) ?
 116                                 ( ( Width % 64 ) == 0 ? 64 : Width % 64 ) :
 117                                 64;
 118                         str->Seek( PalOffset + ( y * Cols * 1024 ) +
 119                                 ( x * 1024 ), GEM_STREAM_START );
 120                         str->Read( &RevCol[0], 1024 );
 121                         str->Seek( PalOffset + ( Rows * Cols * 1024 ) +
 122                                 ( y * Cols * 4 ) + ( x * 4 ),
 123                                 GEM_STREAM_START );
 124                         str->ReadDword( &blockoffset );
 125                         str->Seek( PalOffset + ( Rows * Cols * 1024 ) +
 126                                 ( Rows * Cols * 4 ) + blockoffset,
 127                                 GEM_STREAM_START );
 128                         str->Read( blockpixels, bw * bh );
 129                         unsigned char * bp = blockpixels;
 130                         unsigned char * startpixel = pixels +
 131                                 ( ( Width * 4 * y ) * 64 ) +
 132                                 ( 4 * x * 64 );
 133                         for (int h = 0; h < bh; h++) {
 134                                 for (int w = 0; w < bw; w++) {
 135                                         *startpixel = RevCol[*bp].a;
 136                                         startpixel++;
 137                                         *startpixel = RevCol[*bp].b;
 138                                         startpixel++;
 139                                         *startpixel = RevCol[*bp].g;
 140                                         startpixel++;
 141                                         *startpixel = RevCol[*bp].r;
 142                                         startpixel++;
 143                                         bp++;
 144                                 }
 145                                 startpixel = startpixel + ( Width * 4 ) - ( 4 * bw );
 146                         }
 147                 }
 148         }
 149         free( blockpixels );
 150         Sprite2D* ret = core->GetVideoDriver()->CreateSprite( Width, Height, 32,
 151                 red_mask, green_mask, blue_mask, 0,
 152                 pixels, true, green_mask );
 153         return ret;
 154 }
 155
 156 #include "../../includes/plugindef.h"
 157
 158 GEMRB_PLUGIN(0x167B73E, "MOS File Importer")
 159 PLUGIN_IE_RESOURCE(&ImageMgr::ID, MOSImp, ".mos", (ieWord)IE_MOS_CLASS_ID)
 160 END_PLUGIN()
 161 /** No descriptions */
 162 void MOSImp::GetPalette(int /*index*/, int /*colors*/, Color* /*pal*/)
 163 {
 164 }