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    : coder.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
 **************************************************/

     
/* Modyfied by Roalt Aalmoes with better algorithms and performance
 * objectives
 *
 * Warning: Although I tried to remove all advanced options code,
 * there might still be some artifacts in the code. Please do not
 * blame me for not removing all of it. 
 * Removing all advanced and alternating quantization code was done
 * for performance reasons. I'm sorry these options are not 
 * implemented here, but see the tmn1.7 code for a slow functioning
 * advanced H.263 compression algorithm. 
 *****************************************************************/

/* Notes for clear code: */
/* var. j is used for row indexing of MB in frame */
/* var. i is used for column indexing of MB in frame */

/*  pic is declared global */
/* MV is changed: it is now a real array of MV instead of array of pointers
   to MV. Its range is also equal to MVs encoded, without border MVs 
   Advantages: No more mallocs and frees in the code, disadvantages: ?? */
/* PictImage structure is replaced by int pointer. Drawback: not flexible for
   other format. */

#include"coder.h"
#include "countbit.h"
#include "pred.h"
#include "quant.h"
#include "mot_est.h"
#include "dct.h"

/**********************************************************************
 *
 *    Name:        Clip
 *    Description:    clips recontructed data 0-255
 *    
 *    Input:            pointer to recon. data structure
 *    Side effects:   data structure clipped
 *
 *    Date: 960715     Author: Roalt Aalmoes
 *
 ***********************************************************************/

//__inline__ void Clip(MB_Structure *data) 
void Clip(MB_Structure *data) 
{
  int n;
  int *mb_ptr = (int *) data;
  for (n = 0; n < 256 + 64 + 64; n++) {
    *mb_ptr = mmin(255,mmax(0,*mb_ptr));
    mb_ptr++;
  }
}

/* Encodes one frame intra using params */

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