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revision 1022, Wed May 14 18:46:39 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 1.3.2.6 2003-05-14 18:46:39 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 39  Line 34 
34    
35  /* hard coded motion search parameters for motion_est and smp_motion_est */  /* hard coded motion search parameters for motion_est and smp_motion_est */
36    
37  // very large value  /* very large value */
38  #define MV_MAX_ERROR    (4096 * 256)  #define MV_MAX_ERROR    (4096 * 256)
39    
40  /* INTER bias for INTER/INTRA decision; mpeg4 spec suggests 2*nb */  /* INTER bias for INTER/INTRA decision; mpeg4 spec suggests 2*nb */
# Line 50  Line 45 
45  #define NEIGH_TEND_8X8          40.0  #define NEIGH_TEND_8X8          40.0
46  #define NEIGH_8X8_BIAS          30  #define NEIGH_8X8_BIAS          30
47    
48    #define BITS_MULT                       16
49    
50  /* Parameters which control inter/inter4v decision */  /* Parameters which control inter/inter4v decision */
51  #define IMV16X16                        2  #define IMV16X16                        2
52    
# Line 89  Line 86 
86          (int)(21.2656*NEIGH_TEND_8X8 + 0.5), (int)(24.8580*NEIGH_TEND_8X8 + 0.5),          (int)(21.2656*NEIGH_TEND_8X8 + 0.5), (int)(24.8580*NEIGH_TEND_8X8 + 0.5),
87          (int)(29.6436*NEIGH_TEND_8X8 + 0.5), (int)(36.4949*NEIGH_TEND_8X8 + 0.5)        };          (int)(29.6436*NEIGH_TEND_8X8 + 0.5), (int)(36.4949*NEIGH_TEND_8X8 + 0.5)        };
88    
89  // mv.length table  /* mv.length table */
90  static const int mvtab[64] = {  static const int mvtab[64] = {
91                  1, 2, 3, 4, 6, 7, 7, 7,                  1, 2, 3, 4, 6, 7, 7, 7,
92                  9, 9, 9, 10, 10, 10, 10, 10,                  9, 9, 9, 10, 10, 10, 10, 10,
# Line 107  Line 104 
104    
105  typedef struct  typedef struct
106  {  {
107  // general fields          /* general fields */
108          int max_dx, min_dx, max_dy, min_dy;          int max_dx, min_dx, max_dy, min_dy;
109          uint32_t rounding;          uint32_t rounding;
110          VECTOR predMV;          VECTOR predMV;
111          VECTOR * currentMV;          VECTOR * currentMV;
112          VECTOR * currentQMV;          VECTOR * currentQMV;
113          int32_t * iMinSAD;          int32_t * iMinSAD;
114          const uint8_t * RefP[6]; // N, V, H, HV, cU, cV          const uint8_t * RefP[6]; /* N, V, H, HV, cU, cV */
115          const uint8_t * CurU;          const uint8_t * CurU;
116          const uint8_t * CurV;          const uint8_t * CurV;
117          uint8_t * RefQ;          uint8_t * RefQ;
# Line 127  Line 124 
124          int qpel, qpel_precision;          int qpel, qpel_precision;
125          int chroma;          int chroma;
126          int rrv;          int rrv;
127  //fields for interpolate and direct modes  
128          const uint8_t * b_RefP[6]; // N, V, H, HV, cU, cV          /* fields for interpolate and direct modes */
129            const uint8_t * b_RefP[6]; /* N, V, H, HV, cU, cV */
130          VECTOR bpredMV;          VECTOR bpredMV;
131          uint32_t bFcode;          uint32_t bFcode;
132  // fields for direct mode  
133            /* fields for direct mode */
134          VECTOR directmvF[4];          VECTOR directmvF[4];
135          VECTOR directmvB[4];          VECTOR directmvB[4];
136          const VECTOR * referencemv;          const VECTOR * referencemv;
137  // _BITS stuff  
138            /* BITS/R-D stuff */
139          int16_t * dctSpace;          int16_t * dctSpace;
140          uint32_t iQuant;          uint32_t iQuant;
141          uint32_t quant_type;          uint32_t quant_type;
# Line 301  Line 301 
301    
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  static int  /* one over lambda for R-D mode decision and motion search */
306  CountDistortionSkip(const SearchData * const Data);  #define LAMBDA          ( (int)(BITS_MULT/1.0) )
307  */  
308  static __inline unsigned int  static __inline unsigned int
309  Block_CalcBits(uint16_t * const coeff,  Block_CalcBits( int16_t * const coeff,
310                                          uint16_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)
                                         const int RD)  
315  {  {
316          int sum;          int sum;
317            int bits;
318            int distortion = 0;
319            int i;
320    
321          fdct(data);          fdct(data);
322    
# Line 322  Line 325 
325    
326          if (sum > 0) {          if (sum > 0) {
327                  *cbp |= 1 << (5 - block);                  *cbp |= 1 << (5 - block);
328                  return CodeCoeffInter_CalcBits(coeff, scan_tables[0]);                  bits = BITS_MULT * CodeCoeffInter_CalcBits(coeff, scan_tables[0]);
329          } else return 0;          } else bits = 0;
330    
331            if (quant_type == 0) dequant_inter(dqcoeff, coeff, quant);
332            else dequant4_inter(dqcoeff, coeff, quant);
333    
334            for (i = 0; i < 64; i++) {
335                    distortion += (data[i] - dqcoeff[i])*(data[i] - dqcoeff[i]);
336            }
337    
338            bits += (LAMBDA*distortion)/(quant*quant);
339    
340            return bits;
341    }
342    
343    static __inline unsigned int
344    Block_CalcBitsIntra(int16_t * const coeff,
345                                            int16_t * const data,
346                                            int16_t * const dqcoeff,
347                                            const uint32_t quant, const int quant_type,
348                                            uint32_t * cbp,
349                                            const int block,
350                                            int * dcpred)
351    {
352            int bits, i;
353            int distortion = 0;
354            uint32_t iDcScaler = get_dc_scaler(quant, block < 4);
355            int b_dc;
356    
357            fdct(data);
358            data[0] -= 1024;
359    
360            if (quant_type == 0) quant_intra(coeff, data, quant, iDcScaler);
361            else quant4_intra(coeff, data, quant, iDcScaler);
362    
363            b_dc = coeff[0];
364            if (block < 4) {
365                    coeff[0] -= *dcpred;
366                    *dcpred = b_dc;
367            }
368    
369            bits = BITS_MULT*CodeCoeffIntra_CalcBits(coeff, scan_tables[0]);
370            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;
376            if (quant_type == 0) dequant_intra(dqcoeff, coeff, quant, iDcScaler);
377            else dequant4_intra(dqcoeff, coeff, quant, iDcScaler);
378    
379            for (i = 0; i < 64; i++) {
380                    distortion += (data[i] - dqcoeff[i])*(data[i] - dqcoeff[i]);
381            }
382    
383            bits += (LAMBDA*distortion)/(quant*quant);
384    
385            return bits;
386  }  }
387    
388  #endif                                                  /* _MOTION_EST_H_ */  #endif                                                  /* _MOTION_EST_H_ */
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