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revision 1053, Mon Jun 9 01:25:19 2003 UTC revision 1075, Thu Jun 26 11:50:37 2003 UTC
# Line 1  Line 1 
1  /**************************************************************************  /*****************************************************************************
2   *   *
3   *  XVID MPEG-4 VIDEO CODEC   *  XVID MPEG-4 VIDEO CODEC
4   *  -  Motion estimation header  -   *  - Motion Estimation related header -
5   *   *
6   *  This program is an implementation of a part of one or more MPEG-4   *  Copyright(C) 2002 Christoph Lampert <gruel@web.de>
7   *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending   *               2002 Michael Militzer <michael@xvid.org>
8   *  to use this software module in hardware or software products are   *               2002-2003 Radoslaw Czyz <xvid@syskin.cjb.net>
  *  advised that its use may infringe existing patents or copyrights, and  
  *  any such use would be at such party's own risk.  The original  
  *  developer of this software module and his/her company, and subsequent  
  *  editors and their companies, will have no liability for use of this  
  *  software or modifications or derivatives thereof.  
9   *   *
10   *  This program is free software; you can redistribute it and/or modify   *  This program is free software; you can redistribute it and/or modify
11   *  it under the terms of the GNU General Public License as published by   *  it under the terms of the GNU General Public License as published by
# Line 26  Line 21 
21   *  along with this program; if not, write to the Free Software   *  along with this program; if not, write to the Free Software
22   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23   *   *
24   *  $Id: motion_est.h,v 1.3.2.8 2003-06-09 01:22:18 edgomez Exp $   * $Id: motion_est.h,v 1.3.2.11 2003-06-26 11:50:27 syskin Exp $
25   *   *
26   ***************************************************************************/   ****************************************************************************/
27    
28  #ifndef _MOTION_EST_H_  #ifndef _MOTION_EST_H_
29  #define _MOTION_EST_H_  #define _MOTION_EST_H_
# Line 307  Line 302 
302  int CodeCoeffIntra_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);  int CodeCoeffIntra_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);
303  int CodeCoeffInter_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);  int CodeCoeffInter_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);
304    
305  #define LAMBDA          ( (int)(1.0*BITS_MULT) )  /* one over lambda for R-D mode decision and motion search */
306    #define LAMBDA          ( (int)(BITS_MULT/1.0) )
307    
308  static __inline unsigned int  static __inline unsigned int
309  Block_CalcBits( int16_t * const coeff,  Block_CalcBits( int16_t * const coeff,
310                                  int16_t * const data,                                  int16_t * const data,
311                                    int16_t * const dqcoeff,
312                                  const uint32_t quant, const int quant_type,                                  const uint32_t quant, const int quant_type,
313                                  uint32_t * cbp,                                  uint32_t * cbp,
314                                  const int block)                                  const int block)
315  {  {
316          int sum;          int sum;
317          int bits;          int bits;
         const int lambda = LAMBDA*quant*quant;  
318          int distortion = 0;          int distortion = 0;
319          int i;          int i;
320    
# Line 332  Line 328 
328                  bits = BITS_MULT * CodeCoeffInter_CalcBits(coeff, scan_tables[0]);                  bits = BITS_MULT * CodeCoeffInter_CalcBits(coeff, scan_tables[0]);
329          } else bits = 0;          } else bits = 0;
330    
331          if (quant_type == 0) dequant_inter(coeff, coeff, quant);          if (quant_type == 0) dequant_inter(dqcoeff, coeff, quant);
332          else dequant4_inter(coeff, coeff, quant);          else dequant4_inter(dqcoeff, coeff, quant);
333    
334          for (i = 0; i < 64; i++) {          for (i = 0; i < 64; i++) {
335                  distortion += (data[i] - coeff[i])*(data[i] - coeff[i]);                  distortion += (data[i] - dqcoeff[i])*(data[i] - dqcoeff[i]);
336          }          }
         bits += (BITS_MULT*BITS_MULT*distortion)/lambda;  
337    
338            bits += (LAMBDA*distortion)/(quant*quant);
339    
340          return bits;          return bits;
341  }  }
# Line 347  Line 343 
343  static __inline unsigned int  static __inline unsigned int
344  Block_CalcBitsIntra(int16_t * const coeff,  Block_CalcBitsIntra(int16_t * const coeff,
345                                          int16_t * const data,                                          int16_t * const data,
346                                            int16_t * const dqcoeff,
347                                          const uint32_t quant, const int quant_type,                                          const uint32_t quant, const int quant_type,
348                                          uint32_t * cbp,                                          uint32_t * cbp,
349                                          const int block,                                          const int block,
350                                          int * dcpred)                                          int * dcpred)
351  {  {
352          int bits, i;          int bits, i;
         const int lambda = LAMBDA*quant*quant;  
353          int distortion = 0;          int distortion = 0;
354          uint32_t iDcScaler = get_dc_scaler(quant, block > 3);          uint32_t iDcScaler = get_dc_scaler(quant, block < 4);
355          int b_dc;          int b_dc;
356    
357          fdct(data);          fdct(data);
# Line 370  Line 366 
366                  *dcpred = b_dc;                  *dcpred = b_dc;
367          }          }
368    
         *cbp |= 1 << (5 - block);  
369          bits = BITS_MULT*CodeCoeffIntra_CalcBits(coeff, scan_tables[0]);          bits = BITS_MULT*CodeCoeffIntra_CalcBits(coeff, scan_tables[0]);
         bits += BITS_MULT*dcy_tab[coeff[0] + 255].len;  
370          if (bits != 0) *cbp |= 1 << (5 - block);          if (bits != 0) *cbp |= 1 << (5 - block);
371    
372            if (block < 4) bits += BITS_MULT*dcy_tab[coeff[0] + 255].len;
373            else bits += BITS_MULT*dcc_tab[coeff[0] + 255].len;
374    
375          coeff[0] = b_dc;          coeff[0] = b_dc;
376          if (quant_type == 0) dequant_intra(coeff, coeff, quant, iDcScaler);          if (quant_type == 0) dequant_intra(dqcoeff, coeff, quant, iDcScaler);
377          else dequant4_intra(coeff, coeff, quant, iDcScaler);          else dequant4_intra(dqcoeff, coeff, quant, iDcScaler);
378    
379          for (i = 0; i < 64; i++) {          for (i = 0; i < 64; i++) {
380                  distortion += (data[i] - coeff[i])*(data[i] - coeff[i]);                  distortion += (data[i] - dqcoeff[i])*(data[i] - dqcoeff[i]);
381          }          }
382    
383          bits += (BITS_MULT*BITS_MULT*distortion)/lambda;          bits += (LAMBDA*distortion)/(quant*quant);
384    
385          return bits;          return bits;
386  }  }
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