vteletextview.cc

   1 /*
   2     Copyright 2005-2008 Chris Tallon, Marten Richter
   3
   4     This file is part of VOMP.
   5
   6     VOMP is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     VOMP is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with VOMP; if not, write to the Free Software
  18     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19 */
  20 #include <math.h>
  21 #include "vteletextview.h"
  22 #include "video.h"
  23 #include "timers.h"
  24 #include "boxstack.h"
  25 #include "remote.h"
  26 #include "teletxt/txtfont.h"
  27
  28 unsigned int interpol_table_fac1[16][22];
  29 unsigned int interpol_table_fac2[16][22];
  30 unsigned int interpol_table_fac3[16][22];
  31 unsigned int interpol_table_fac4[16][22];
  32 int interpol_lowbit[16];
  33 int interpol_upbit[16];
  34 int interpol_lowline[22];
  35 int interpol_upline[22];
  36
  37 void initpol_tables(){
  38     int charsizex;
  39     int charsizey;
  40     charsizex=16;
  41     if (Video::getInstance()->getFormat() == Video::PAL)
  42     {
  43         charsizey=22;
  44     } else {
  45         charsizey=18;
  46     }
  47     int ttcharsizex=12;
  48     int ttcharsizey=10;
  49     for (int py=0;py<charsizey;py++) {
  50         float fposy=((float)(ttcharsizey))/((float)(charsizey))*((float)py);
  51         float yweight=fposy-floor(fposy);
  52         float yinvweight=1.-yweight;
  53         interpol_upline[py]=min((unsigned int)ceil(fposy),9);
  54         interpol_lowline[py]=max((unsigned int)floor(fposy),0);
  55         for (int px=0;px<charsizex;px++) {
  56             float fposx=((float)(ttcharsizex))/((float)(charsizex))*((float)px);
  57             float xweight=fposx-floor(fposx);
  58             float xinvweight=1.-xweight;
  59             interpol_upbit[px]= (min((unsigned int)ceil(fposx),11));
  60             interpol_lowbit[px]= (max((unsigned int)floor(fposx),0));
  61
  62             interpol_table_fac1[px][py]=xweight*yweight*256.;
  63             interpol_table_fac2[px][py]=xinvweight*yweight*256.;
  64             interpol_table_fac3[px][py]=xweight*yinvweight*256.;
  65             interpol_table_fac4[px][py]=xinvweight*yinvweight*256.;
  66
  67         }
  68     }
  69 }
  70
  71 VTeletextView::VTeletextView(TeletextDecoderVBIEBU* TTdecoder,Boxx* playerview)
  72 {
  73     ttdecoder=TTdecoder;
  74     pv=playerview;
  75     subtitlemode=false;
  76     initpol_tables();
  77
  78
  79     if (Video::getInstance()->getFormat() == Video::PAL)
  80     {
  81         //setSize(680, 550);
  82         setSize(680,22); //Only first line
  83         setPosition(40, 26);
  84     }
  85     else
  86     {
  87         setPosition(40, 30);
  88         //setSize(680, 450);
  89         setSize(680,18);//only first line
  90     }
  91     createBuffer();
  92     keyindigit=1;
  93     page=0x100;
  94
  95 }
  96
  97 VTeletextView::~VTeletextView ()
  98 {
  99     // Make sure the timer is deleted
 100   pv->draw();
 101   BoxStack::getInstance()->update(pv);
 102   Timers::getInstance()->cancelTimer(this, 1);
 103   ttdecoder->unRegisterTeletextView(this);
 104
 105 }
 106
 107 void VTeletextView::draw(bool completedraw, bool onlyfirstline)
 108 {
 109     Boxx::draw();
 110     int x,y;
 111
 112     for (y=0;y<25;y++) {
 113         for (x=0;x<40;x++) {
 114             if (ttdecoder->isDirty(x,y) || completedraw) {
 115                 cTeletextChar c=ttdecoder->getChar(x,y);
 116                 c.SetDirty(false);
 117                 //Skip Blinking and conceal
 118                 drawChar(x,y,c);
 119                 ttdecoder->setChar(x,y,c);
 120             }
 121         }
 122         if (onlyfirstline) break;
 123     }
 124
 125
 126 }
 127
 128 Colour VTeletextView::enumTeletextColorToCoulour(enumTeletextColor ttcol)
 129 {
 130     switch (ttcol) {
 131         case ttcBlack:
 132             return Colour(0,0,0);
 133         case ttcRed:
 134             return Colour(255,0,0);
 135         case ttcGreen:
 136             return Colour(0,255,0);
 137         case ttcYellow:
 138             return Colour(255,255,0);
 139         case ttcBlue:
 140             return Colour(0,0,255);
 141         case ttcMagenta:
 142             return Colour(255,0,255);
 143         case ttcCyan:
 144             return Colour(0,255,255);
 145         case ttcWhite:
 146             return Colour(255,255,255);
 147         case ttcTransparent:
 148             return Colour(0,0,0,0);
 149         case ttcHalfRed:
 150             return Colour(127,0,0);
 151         case ttcHalfGreen:
 152             return Colour(0,127,0);
 153         case ttcHalfYellow:
 154             return Colour(127,127,0);
 155         case ttcHalfBlue:
 156             return Colour(0,0,127);
 157         case ttcHalfMagenta:
 158             return Colour(127,0,127);
 159         case ttcHalfCyan:
 160             return Colour(0,127,127);
 161         case ttcGrey:
 162             return Colour(127,127,127);
 163         default:
 164             return Colour(0,0,0);
 165     };
 166 }
 167
 168 //Next function inspired by osdteletext plugin
 169 void VTeletextView::drawChar(int x, int y, cTeletextChar c)
 170 {
 171     unsigned int buffer [10];
 172     unsigned int * charmap=GetFontChar(c,buffer);
 173     if (!charmap) { //invalid char
 174         memset(&buffer,0,10);
 175         charmap=buffer;
 176     }
 177     enumTeletextColor ttforegcolour=c.GetFGColor();
 178     enumTeletextColor ttbackgcolour=c.GetBGColor();
 179     if (c.GetBoxedOut()) {
 180         ttforegcolour=ttcTransparent;
 181         ttbackgcolour=ttcTransparent;
 182     }
 183     int charsizex;
 184     int charsizey;
 185     charsizex=16;
 186     bool firstline=false;
 187     if (y==0) firstline=true;
 188     if (Video::getInstance()->getFormat() == Video::PAL)
 189     {
 190         charsizey=22;
 191     } else {
 192         charsizey=18;
 193     }
 194     int ttcharsizex=12;
 195     int ttcharsizey=10;
 196     int screenposx=charsizex*x; //12*40= 480 250
 197     int screenposy=y*charsizey;
 198     Boxx* drawtarget=this;
 199     if (!firstline) {
 200
 201         drawtarget=pv;
 202         screenposy+=this->getScreenY();
 203         screenposx+=this->getScreenX();
 204
 205     }
 206
 207     Colour fgcharcl=enumTeletextColorToCoulour(ttforegcolour);
 208     Colour bgcharcl=enumTeletextColorToCoulour(ttbackgcolour);
 209
 210     drawtarget->startFastDraw();
 211     for (int py=0;py<charsizey;py++) {
 212         int upperbitline=charmap[interpol_upline[py]];
 213         int lowerbitline=charmap[interpol_lowline[py]];
 214         for (int px=0;px<charsizex;px++) {
 215             int upperbit= interpol_upbit[px];
 216             int lowerbit= interpol_lowbit[px];
 217             Colour uuc=( upperbitline &(0x8000>>upperbit)) ? fgcharcl: bgcharcl;
 218             Colour ulc=( upperbitline &(0x8000>>lowerbit)) ? fgcharcl: bgcharcl;
 219             Colour luc=( lowerbitline &(0x8000>>upperbit)) ? fgcharcl: bgcharcl;
 220             Colour llc=( lowerbitline &(0x8000>>lowerbit)) ? fgcharcl: bgcharcl;
 221             unsigned int fac1,fac2,fac3,fac4;
 222             fac1=interpol_table_fac1[px][py];
 223             fac2=interpol_table_fac2[px][py];
 224             fac3=interpol_table_fac3[px][py];
 225             fac4=interpol_table_fac4[px][py];
 226
 227             Colour res((uuc.red*fac1+ulc.red*fac2+luc.red*fac3+llc.red*fac4)/256,
 228                 (uuc.green*fac1+ulc.green*fac2+luc.green*fac3+llc.green*fac4)/256,
 229                 (uuc.blue*fac1+ulc.blue*fac2+luc.blue*fac3+llc.blue*fac4)/256,
 230                 (uuc.alpha*fac1+ulc.alpha*fac2+luc.alpha*fac3+llc.alpha*fac4)/256); //if this is too slow make a table
 231             drawtarget->drawPixelAlpha(screenposx+px,screenposy+py,res, true);
 232         }
 233     }
 234
 235
 236     drawtarget->endFastDraw();
 237
 238
 239 }
 240
 241 int VTeletextView::handleCommand(int command) {
 242     if (subtitlemode) return 0; //Ok we are in  subtitle mode, we are a slave of the player
 243     switch (command) {
 244     case Remote::OK:
 245         return 2;
 246     case Remote::BACK:
 247         return 4;
 248      case Remote::ZERO:
 249     case Remote::ONE:
 250     case Remote::TWO:
 251     case Remote::THREE:
 252     case Remote::FOUR:
 253     case Remote::FIVE:
 254     case Remote::SIX:
 255     case Remote::SEVEN:
 256     case Remote::EIGHT:
 257     case Remote::NINE:
 258     {
 259       // key in teletext page
 260       doKey(command);
 261       return 2;
 262     }
 263     };
 264
 265     return 0;
 266
 267 }
 268
 269 void VTeletextView::doKey(int command)
 270 {
 271     char pagenums[3];
 272     if (keyindigit==1){
 273         if (command==9) return; //not allowed
 274         page=command<<8;
 275         pagenums[0]=command+ 48;
 276         pagenums[1]='-';
 277         pagenums[2]='-';
 278         keyindigit++;
 279     } else if (keyindigit==2) {
 280         page|=command<<4;
 281         pagenums[0]=48+((page &0xF00)>>8);
 282         pagenums[1]=command+ 48;
 283         pagenums[2]='-';
 284         keyindigit++;
 285     } else if (keyindigit==3) {
 286         page|=command;
 287         pagenums[0]=48+((page &0xF00)>>8);
 288         pagenums[1]=48+((page &0x0F0)>>4);
 289         pagenums[2]=48+command;
 290         keyindigit=1;
 291         ttdecoder->setPage(page);
 292     }
 293     ttdecoder->setKeyinDigits(pagenums,true);
 294     Region toupdate;
 295     toupdate.w=16*40;
 296     if (Video::getInstance()->getFormat() == Video::PAL) {
 297         toupdate.h=22;
 298
 299      } else {
 300         toupdate.h=18;
 301
 302       }
 303      toupdate.x=0;
 304      toupdate.y=0;
 305
 306      draw(false,true);
 307      BoxStack::getInstance()->update(this,&toupdate);
 308
 309 }
 310
 311 void VTeletextView::timercall(int clientReference)
 312 {
 313
 314 }
 315
 316 void VTeletextView::processMessage(Message* m)
 317 {
 318     if (m->message == Message::TELETEXTUPDATE)
 319     {
 320         draw(false,false);
 321         BoxStack::getInstance()->update(this);
 322         BoxStack::getInstance()->update(pv);
 323
 324     } else if (m->message == Message::TELETEXTUPDATEFIRSTLINE)
 325     {
 326         Region toupdate;
 327         toupdate.w=16*40;
 328         if (Video::getInstance()->getFormat() == Video::PAL) {
 329             toupdate.h=22;
 330
 331         } else {
 332             toupdate.h=18;
 333
 334         }
 335         toupdate.x=0;
 336         toupdate.y=0;
 337
 338
 339
 340         draw(false,true);
 341         BoxStack::getInstance()->update(this,&toupdate);
 342
 343     }
 344 }
 345
 346