SourceCodeSky

////////////////////////////////////////////////////////////////////////////
//
//
//    Project     : VideoNet version 1.1.
//    Description : Peer to Peer Video Conferencing over the LAN.
//      Author      :    Nagareshwar Y Talekar ( nsry2002@yahoo.co.in)
//    Date        : 15-6-2004.
//
//    This is the modified version of tmndecode (H.263 decoder) 
//    written by Karl & Robert.It was in ANSI C. I have converted into C++
//    so that it can be integrated into any windows application. I have 
//    removed some of the files which had display and file storing 
//    functions.I have removed the unnecessary code and also added some
//    new files..
//      Original library dealt with files. Input & Output , both were files.
//    I have done some major changes so that it can be used for real time 
//    decoding process. Now one can use this library for decoding H263 frames. 
//
//
//    File description : 
//    Name    : DGlobal.cpp
//      Details : Definitions of global variables.
//
/////////////////////////////////////////////////////////////////////////////


#include "DGlobal.h"



// Variable definitions....


   char version[200]="tmndecode v1.7\n(C) 1995, 1996 Telenor R&D\n";

   int quiet=1;  //keep quiet
   int trace=0;  //don't trace....
   char errortext[256];
   unsigned char *refframe[3],*oldrefframe[3],*bframe[3],*newframe[3];
   unsigned char *edgeframe[3], *edgeframeorig[3], *exnewframe[3];
   int MV[2][5][MBR+1][MBC+2];
   int modemap[MBR+1][MBC+2];
   unsigned char *clp;
   int horizontal_size,vertical_size,mb_width,mb_height;
   int coded_picture_width, coded_picture_height;
   int chrom_width,chrom_height,blk_cnt;
   int pict_type,newgob;
   int mv_outside_frame,syntax_arith_coding,adv_pred_mode,pb_frame;
   int long_vectors;
   int fault,expand;
   int verbose;
   int refidct;
   int matrix_coefficients;
   int temp_ref, prev_temp_ref, quant, source_format;
   int framerate;
   unsigned char *cframe=NULL;
   int csize;
   int cindex;
   struct ld  base,*ld;
   unsigned char *yp,*up,*vp;

   // log file for decoder...
   FILE *dlog=NULL;



  #ifndef WIN32
   struct timeval tftarget;
  #else
   unsigned int targetTime;
  #endif


   int roundtab[16]=  {0,0,0,1,1,1,1,1,1,1,1,1,1,1,2,2};

  //output
   char *outputname;
   int outtype;


   
   int trd, trb, bscan, bquant;
   int bscan_tab[]= {2,4,6,8};
   int bquant_tab[]= {5,6,7,8};


  
// zig-zag scan 
  unsigned char zig_zag_scan[64]=
  {
  0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,
  12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,
  35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,
  58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63
  };


// /*color space conversion coefficients
// *
// * entries are {crv,cbu,cgu,cgv}
// *
// * crv=(255/224)*65536*(1-cr)/0.5
// * cbu=(255/224)*65536*(1-cb)/0.5
// * cgu=(255/224)*65536*(cb/cg)*(1-cb)/0.5
// * cgv=(255/224)*65536*(cr/cg)*(1-c[!==More==!]