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revision 1.1, Mon Sep 23 20:36:02 2002 UTC revision 1.1.2.11, Fri Dec 13 11:56:31 2002 UTC
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1    /**************************************************************************
2     *
3     *  XVID MPEG-4 VIDEO CODEC
4     *  -  Motion estimation header  -
5     *
6     *  This program is an implementation of a part of one or more MPEG-4
7     *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending
8     *  to use this software module in hardware or software products are
9     *  advised that its use may infringe existing patents or copyrights, and
10     *  any such use would be at such party's own risk.  The original
11     *  developer of this software module and his/her company, and subsequent
12     *  editors and their companies, will have no liability for use of this
13     *  software or modifications or derivatives thereof.
14     *
15     *  This program is free software; you can redistribute it and/or modify
16     *  it under the terms of the GNU General Public License as published by
17     *  the Free Software Foundation; either version 2 of the License, or
18     *  (at your option) any later version.
19     *
20     *  This program is distributed in the hope that it will be useful,
21     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
22     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23     *  GNU General Public License for more details.
24     *
25     *  You should have received a copy of the GNU General Public License
26     *  along with this program; if not, write to the Free Software
27     *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
28     *
29     *  $Id$
30     *
31     ***************************************************************************/
32    
33    #ifndef _MOTION_EST_H_
34    #define _MOTION_EST_H_
35    
36    #include "../portab.h"
37    #include "../global.h"
38    
39    /* hard coded motion search parameters for motion_est and smp_motion_est */
40    
41    // very large value
42    #define MV_MAX_ERROR    (4096 * 256)
43    
44    /* INTER bias for INTER/INTRA decision; mpeg4 spec suggests 2*nb */
45    #define MV16_INTER_BIAS 512
46    
47    /* vector map (vlc delta size) smoother parameters ! float !*/
48    #define NEIGH_TEND_16X16        10.5
49    #define NEIGH_TEND_8X8          4.0
50    #define NEIGH_8X8_BIAS          30
51    
52    /* Parameters which control inter/inter4v decision */
53    #define IMV16X16                        2
54    
55    static const int lambda_vec16[32] =
56            {     0    ,(int)(1.00235 * NEIGH_TEND_16X16 + 0.5),
57            (int)(1.15582*NEIGH_TEND_16X16 + 0.5), (int)(1.31976*NEIGH_TEND_16X16 + 0.5),
58            (int)(1.49591*NEIGH_TEND_16X16 + 0.5), (int)(1.68601*NEIGH_TEND_16X16 + 0.5),
59            (int)(1.89187*NEIGH_TEND_16X16 + 0.5), (int)(2.11542*NEIGH_TEND_16X16 + 0.5),
60            (int)(2.35878*NEIGH_TEND_16X16 + 0.5), (int)(2.62429*NEIGH_TEND_16X16 + 0.5),
61            (int)(2.91455*NEIGH_TEND_16X16 + 0.5), (int)(3.23253*NEIGH_TEND_16X16 + 0.5),
62            (int)(3.58158*NEIGH_TEND_16X16 + 0.5), (int)(3.96555*NEIGH_TEND_16X16 + 0.5),
63            (int)(4.38887*NEIGH_TEND_16X16 + 0.5), (int)(4.85673*NEIGH_TEND_16X16 + 0.5),
64            (int)(5.37519*NEIGH_TEND_16X16 + 0.5), (int)(5.95144*NEIGH_TEND_16X16 + 0.5),
65            (int)(6.59408*NEIGH_TEND_16X16 + 0.5), (int)(7.31349*NEIGH_TEND_16X16 + 0.5),
66            (int)(8.12242*NEIGH_TEND_16X16 + 0.5), (int)(9.03669*NEIGH_TEND_16X16 + 0.5),
67            (int)(10.0763*NEIGH_TEND_16X16 + 0.5), (int)(11.2669*NEIGH_TEND_16X16 + 0.5),
68            (int)(12.6426*NEIGH_TEND_16X16 + 0.5), (int)(14.2493*NEIGH_TEND_16X16 + 0.5),
69            (int)(16.1512*NEIGH_TEND_16X16 + 0.5), (int)(18.442*NEIGH_TEND_16X16 + 0.5),
70            (int)(21.2656*NEIGH_TEND_16X16 + 0.5), (int)(24.8580*NEIGH_TEND_16X16 + 0.5),
71            (int)(29.6436*NEIGH_TEND_16X16 + 0.5), (int)(36.4949*NEIGH_TEND_16X16 + 0.5)    };
72    
73    static const int lambda_vec8[32] =
74            {     0    ,(int)(1.00235 * NEIGH_TEND_8X8 + 0.5),
75            (int)(1.15582 + NEIGH_TEND_8X8 + 0.5), (int)(1.31976*NEIGH_TEND_8X8 + 0.5),
76            (int)(1.49591*NEIGH_TEND_8X8 + 0.5), (int)(1.68601*NEIGH_TEND_8X8 + 0.5),
77            (int)(1.89187*NEIGH_TEND_8X8 + 0.5), (int)(2.11542*NEIGH_TEND_8X8 + 0.5),
78            (int)(2.35878*NEIGH_TEND_8X8 + 0.5), (int)(2.62429*NEIGH_TEND_8X8 + 0.5),
79            (int)(2.91455*NEIGH_TEND_8X8 + 0.5), (int)(3.23253*NEIGH_TEND_8X8 + 0.5),
80            (int)(3.58158*NEIGH_TEND_8X8 + 0.5), (int)(3.96555*NEIGH_TEND_8X8 + 0.5),
81            (int)(4.38887*NEIGH_TEND_8X8 + 0.5), (int)(4.85673*NEIGH_TEND_8X8 + 0.5),
82            (int)(5.37519*NEIGH_TEND_8X8 + 0.5), (int)(5.95144*NEIGH_TEND_8X8 + 0.5),
83            (int)(6.59408*NEIGH_TEND_8X8 + 0.5), (int)(7.31349*NEIGH_TEND_8X8 + 0.5),
84            (int)(8.12242*NEIGH_TEND_8X8 + 0.5), (int)(9.03669*NEIGH_TEND_8X8 + 0.5),
85            (int)(10.0763*NEIGH_TEND_8X8 + 0.5), (int)(11.2669*NEIGH_TEND_8X8 + 0.5),
86            (int)(12.6426*NEIGH_TEND_8X8 + 0.5), (int)(14.2493*NEIGH_TEND_8X8 + 0.5),
87            (int)(16.1512*NEIGH_TEND_8X8 + 0.5), (int)(18.442*NEIGH_TEND_8X8 + 0.5),
88            (int)(21.2656*NEIGH_TEND_8X8 + 0.5), (int)(24.8580*NEIGH_TEND_8X8 + 0.5),
89            (int)(29.6436*NEIGH_TEND_8X8 + 0.5), (int)(36.4949*NEIGH_TEND_8X8 + 0.5)        };
90    
91    // mv.length table
92    static const uint32_t mvtab[33] = {
93            1, 2, 3, 4, 6, 7, 7, 7,
94            9, 9, 9, 10, 10, 10, 10, 10,
95            10, 10, 10, 10, 10, 10, 10, 10,
96            10, 11, 11, 11, 11, 11, 11, 12, 12
97    };
98    
99    static const int DQtab[4] = {
100            -1, -2, 1, 2
101    };
102    
103    #define RRV_MV_SCALEDOWN(a)     ( (a)>=0 ? (a+1)/2 : (a-1)/2 )
104    #define RRV_MV_SCALEUP(a)       ( (a)>0 ? 2*(a)-1 : (a)<0 ? 2*(a)+1 : (a) )
105    
106    typedef struct
107            {
108    // general fields
109                    int max_dx, min_dx, max_dy, min_dy;
110                    uint32_t rounding;
111                    VECTOR predMV;
112                    VECTOR *currentMV;
113                    VECTOR *currentQMV;
114                    int32_t *iMinSAD;
115                    const uint8_t * Ref;
116                    const uint8_t * RefH;
117                    const uint8_t * RefV;
118                    const uint8_t * RefHV;
119                    const uint8_t * RefCU;
120                    const uint8_t * RefCV;
121                    const uint8_t * CurU;
122                    const uint8_t * CurV;
123                    uint8_t * RefQ;
124                    const uint8_t * Cur;
125                    uint32_t lambda16;
126                    uint32_t lambda8;
127                    uint32_t iEdgedWidth;
128                    uint32_t iFcode;
129                    int * temp;
130                    int qpel, qpel_precision;
131                    int chroma;
132                    int rrv;
133    //fields for interpolate and direct mode
134                    const uint8_t *bRef;
135                    const uint8_t *bRefH;
136                    const uint8_t *bRefV;
137                    const uint8_t *bRefHV;
138                    VECTOR bpredMV;
139                    uint32_t bFcode;
140    // fields for direct mode
141                    VECTOR directmvF[4];
142                    VECTOR directmvB[4];
143                    const VECTOR * referencemv;
144            }
145            SearchData;
146    
147    
148    typedef void(CheckFunc)(const int x, const int y,
149                                                    const int Direction, int * const dir,
150                                                    const SearchData * const Data);
151    
152    static CheckFunc CheckCandidate16, CheckCandidate16no4v, CheckCandidateInt,
153                            CheckCandidateDirect, CheckCandidateDirectno4v,
154                            CheckCandidate8;
155    CheckFunc *CheckCandidate;
156    
157    /*
158     * Calculate the min/max range (in halfpixels)
159     * relative to the _MACROBLOCK_ position
160     */
161    static void __inline
162    get_range(int32_t * const min_dx,
163                      int32_t * const max_dx,
164                      int32_t * const min_dy,
165                      int32_t * const max_dy,
166                      const uint32_t x,
167                      const uint32_t y,
168                      uint32_t block_sz,    /* block dimension, 8 or 16 */
169                      const uint32_t width,
170                      const uint32_t height,
171                      const uint32_t fcode,
172                      const int qpel,
173                      const int rrv)
174    {
175            int k, m = 2;
176            const int search_range = 32 << (fcode - 1);
177            int high = search_range - 1;
178            int low = -search_range;
179    
180            if (qpel) m = 4;
181            else if (rrv) {
182                            high = RRV_MV_SCALEUP(high);
183                            low = RRV_MV_SCALEUP(low);
184                            block_sz *= 2;
185                    }
186    
187            k = m * (int)(width - x*block_sz);
188            *max_dx = MIN(high, k);
189            k = m * (int)(height -  y*block_sz);
190            *max_dy = MIN(high, k);
191    
192            k = -m * (int)((x+1) * block_sz);
193            *min_dx = MAX(low, k);
194            k = -m * (int)((y+1) * block_sz);
195            *min_dy = MAX(low, k);
196    }
197    
198    typedef void MainSearchFunc(int x, int y, const SearchData * const Data, int bDirection);
199    
200    static MainSearchFunc DiamondSearch, AdvDiamondSearch, SquareSearch;
201    
202    static void Search8(const SearchData * const OldData,
203                            const int x, const int y,
204                            const uint32_t MotionFlags,
205                            const MBParam * const pParam,
206                            MACROBLOCK * const pMB,
207                            const MACROBLOCK * const pMBs,
208                            const int block,
209                            SearchData * const Data);
210    
211    bool
212    MotionEstimation(MBParam * const pParam,
213                                     FRAMEINFO * const current,
214                                     FRAMEINFO * const reference,
215                                     const IMAGE * const pRefH,
216                                     const IMAGE * const pRefV,
217                                     const IMAGE * const pRefHV,
218                                     const uint32_t iLimit);
219    
220    static void
221    SearchP(const IMAGE * const pRef,
222                    const uint8_t * const pRefH,
223                    const uint8_t * const pRefV,
224                    const uint8_t * const pRefHV,
225                    const IMAGE * const pCur,
226                    const int x,
227                    const int y,
228                    const uint32_t MotionFlags,
229                    const uint32_t iQuant,
230                    SearchData * const Data,
231                    const MBParam * const pParam,
232                    const MACROBLOCK * const pMBs,
233                    const MACROBLOCK * const prevMBs,
234                    int inter4v,
235                    MACROBLOCK * const pMB);
236    
237    static VECTOR
238    GlobalMotionEst(const MACROBLOCK * const pMBs,
239                                    const MBParam * const pParam, const uint32_t iFcode);
240    
241    #define iDiamondSize 2
242    
243    #endif                                                  /* _MOTION_EST_H_ */
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