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.
//
//    I have converted origional fast h.263 encoder library from C to C++ 
//      so that it can be integrated into any windows application easily.
//      I have removed some of unnecessary codes/files from the
//      fast h263 library.Also moved definitions and declarations
//      in their proper .h and .cpp files.
//
//    File description : 
//    Name    : countbit.cpp
//
//
/////////////////////////////////////////////////////////////////////////////

/*************************************************
 * libr263: fast H.263 encoder library
 *
 * Copyright (C) 1996, Roalt Aalmoes, Twente University
 * SPA multimedia group
 *
 * Based on Telenor TMN 1.6 encoder (Copyright (C) 1995, Telenor R&D)
 * created by Karl Lillevold 
 *
 * Author encoder: Roalt Aalmoes, <aalmoes@huygens.nl>
 * 
 * Date: 31-07-96
 **************************************************/

 
/**********************************************************************
 *
 *    Name:        CountBitsMB
 *    Description:    counts bits used for MB info
 *    
 *    Input:            Mode, COD, CBP, Picture and Bits structures
 *    Returns:       
 *    Side effects:
 *
 *    Date: 941129    Author: Karl.Lillevold@nta.no
 *
 ***********************************************************************/

#include "countbit.h"


void CountBitsMB(int Mode, int COD, int CBP, int CBPB, Pict *pic, Bits *bits)
{
  extern EHUFF *vlc_cbpy, *vlc_cbpcm, *vlc_cbpcm_intra;
  int cbpy, cbpcm, length;

  /* COD */
  if (Global::trace) {
    fprintf(Global::tf,"MB-nr: %d",pic->MB);
    if (pic->picture_coding_type == PCT_INTER)
      fprintf(Global::tf,"  COD: %d\n",COD);
  }
  if (pic->picture_coding_type == PCT_INTER) {
    mputv(1,COD);
    bits->COD++;
  }

  if (COD) 
    return;    /* not coded */

  /* CBPCM */
  cbpcm = Mode | ((CBP&3)<<4);


  if (Global::trace) {
    fprintf(Global::tf,"CBPCM (CBP=%d) (cbpcm=%d): ",CBP,cbpcm);
  }
  if (pic->picture_coding_type == PCT_INTRA) {
    length = Encode(cbpcm,vlc_cbpcm_intra);
  } else {
    length = Encode(cbpcm,vlc_cbpcm);
  }
  bits->CBPCM += length;

    
  /* CBPY */
  cbpy = CBP>>2;
  if (Mode == MODE_INTRA || Mode == MODE_INTRA_Q) /* Intra */
    cbpy = cbpy^15;
  if (Global::trace) {
    fprintf(Global::tf,"CBPY (CBP=%d) (cbpy=%d): ",CBP,cbpy);
  }
  length = Encode(cbpy, vlc_cbpy);
  bits->CBPY += length;
  

  return;
}


/**********************************************************************
 *
 *    Name:        CountBitsSlice
 *    Description:    couonts bits used for slice (GOB) info
 *    
 *    Input:            slice no., quantizer
 *
 *    Date: 94????    Author: Karl.Lillevold@nta.no
 *
 ***********************************************************************/

int CountBitsSlice(int slic[!==More==!]