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revision 1.1, Mon Sep 23 20:36:02 2002 UTC revision 1.1.2.6, Thu Oct 17 13:50:23 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    /* Parameters which control inter/inter4v decision */
48    #define IMV16X16                        2
49    
50    /* vector map (vlc delta size) smoother parameters ! float !*/
51    #define NEIGH_TEND_16X16        4.0
52    #define NEIGH_TEND_8X8          6.0
53    
54    static const int lambda_vec16[32] =
55            {     0    ,(int)(1.00235 * NEIGH_TEND_16X16 + 0.5),
56            (int)(1.15582*NEIGH_TEND_16X16 + 0.5), (int)(1.31976*NEIGH_TEND_16X16 + 0.5),
57            (int)(1.49591*NEIGH_TEND_16X16 + 0.5), (int)(1.68601*NEIGH_TEND_16X16 + 0.5),
58            (int)(1.89187*NEIGH_TEND_16X16 + 0.5), (int)(2.11542*NEIGH_TEND_16X16 + 0.5),
59            (int)(2.35878*NEIGH_TEND_16X16 + 0.5), (int)(2.62429*NEIGH_TEND_16X16 + 0.5),
60            (int)(2.91455*NEIGH_TEND_16X16 + 0.5), (int)(3.23253*NEIGH_TEND_16X16 + 0.5),
61            (int)(3.58158*NEIGH_TEND_16X16 + 0.5), (int)(3.96555*NEIGH_TEND_16X16 + 0.5),
62            (int)(4.38887*NEIGH_TEND_16X16 + 0.5), (int)(4.85673*NEIGH_TEND_16X16 + 0.5),
63            (int)(5.37519*NEIGH_TEND_16X16 + 0.5), (int)(5.95144*NEIGH_TEND_16X16 + 0.5),
64            (int)(6.59408*NEIGH_TEND_16X16 + 0.5), (int)(7.31349*NEIGH_TEND_16X16 + 0.5),
65            (int)(8.12242*NEIGH_TEND_16X16 + 0.5), (int)(9.03669*NEIGH_TEND_16X16 + 0.5),
66            (int)(10.0763*NEIGH_TEND_16X16 + 0.5), (int)(11.2669*NEIGH_TEND_16X16 + 0.5),
67            (int)(12.6426*NEIGH_TEND_16X16 + 0.5), (int)(14.2493*NEIGH_TEND_16X16 + 0.5),
68            (int)(16.1512*NEIGH_TEND_16X16 + 0.5), (int)(18.442*NEIGH_TEND_16X16 + 0.5),
69            (int)(21.2656*NEIGH_TEND_16X16 + 0.5), (int)(24.8580*NEIGH_TEND_16X16 + 0.5),
70            (int)(29.6436*NEIGH_TEND_16X16 + 0.5), (int)(36.4949*NEIGH_TEND_16X16 + 0.5)    };
71    
72    static const int lambda_vec8[32] =
73            {     0    ,(int)(1.00235 * NEIGH_TEND_8X8 + 0.5),
74            (int)(1.15582 + NEIGH_TEND_8X8 + 0.5), (int)(1.31976*NEIGH_TEND_8X8 + 0.5),
75            (int)(1.49591*NEIGH_TEND_8X8 + 0.5), (int)(1.68601*NEIGH_TEND_8X8 + 0.5),
76            (int)(1.89187*NEIGH_TEND_8X8 + 0.5), (int)(2.11542*NEIGH_TEND_8X8 + 0.5),
77            (int)(2.35878*NEIGH_TEND_8X8 + 0.5), (int)(2.62429*NEIGH_TEND_8X8 + 0.5),
78            (int)(2.91455*NEIGH_TEND_8X8 + 0.5), (int)(3.23253*NEIGH_TEND_8X8 + 0.5),
79            (int)(3.58158*NEIGH_TEND_8X8 + 0.5), (int)(3.96555*NEIGH_TEND_8X8 + 0.5),
80            (int)(4.38887*NEIGH_TEND_8X8 + 0.5), (int)(4.85673*NEIGH_TEND_8X8 + 0.5),
81            (int)(5.37519*NEIGH_TEND_8X8 + 0.5), (int)(5.95144*NEIGH_TEND_8X8 + 0.5),
82            (int)(6.59408*NEIGH_TEND_8X8 + 0.5), (int)(7.31349*NEIGH_TEND_8X8 + 0.5),
83            (int)(8.12242*NEIGH_TEND_8X8 + 0.5), (int)(9.03669*NEIGH_TEND_8X8 + 0.5),
84            (int)(10.0763*NEIGH_TEND_8X8 + 0.5), (int)(11.2669*NEIGH_TEND_8X8 + 0.5),
85            (int)(12.6426*NEIGH_TEND_8X8 + 0.5), (int)(14.2493*NEIGH_TEND_8X8 + 0.5),
86            (int)(16.1512*NEIGH_TEND_8X8 + 0.5), (int)(18.442*NEIGH_TEND_8X8 + 0.5),
87            (int)(21.2656*NEIGH_TEND_8X8 + 0.5), (int)(24.8580*NEIGH_TEND_8X8 + 0.5),
88            (int)(29.6436*NEIGH_TEND_8X8 + 0.5), (int)(36.4949*NEIGH_TEND_8X8 + 0.5)        };
89    
90    // mv.length table
91    static const uint32_t mvtab[33] = {
92            1, 2, 3, 4, 6, 7, 7, 7,
93            9, 9, 9, 10, 10, 10, 10, 10,
94            10, 10, 10, 10, 10, 10, 10, 10,
95            10, 11, 11, 11, 11, 11, 11, 12, 12
96    };
97    
98    static const int DQtab[4] = {
99            -1, -2, 1, 2
100    };
101    
102    
103    typedef struct
104            {
105    // general fields
106                    int max_dx, min_dx, max_dy, min_dy;
107                    uint32_t rounding;
108                    VECTOR predMV;
109                    VECTOR predQMV;
110                    VECTOR *currentMV;
111                    VECTOR *currentQMV;
112                    int32_t *iMinSAD;
113                    const uint8_t * Ref;
114                    const uint8_t * RefH;
115                    const uint8_t * RefV;
116                    const uint8_t * RefHV;
117                    const uint8_t * RefQ;
118                    const uint8_t * Cur;
119                    uint32_t lambda16; //weights of motion vectors
120                    uint32_t lambda8;
121                    uint32_t iEdgedWidth;
122                    uint32_t iFcode;
123                    int * temp;
124    //fields for interpolate and direct mode
125                    const uint8_t *bRef;
126                    const uint8_t *bRefH;
127                    const uint8_t *bRefV;
128                    const uint8_t *bRefHV;
129                    VECTOR bpredMV;
130                    uint32_t bFcode;
131    // fields for direct mode
132                    VECTOR directmvF[4];
133                    VECTOR directmvB[4];
134                    const VECTOR * referencemv;
135            }
136            SearchData;
137    
138    
139    typedef void(CheckFunc)(const int x, const int y,
140                                                    const int Direction, int * const dir,
141                                                    const SearchData * const Data);
142    
143    static CheckFunc CheckCandidate16, CheckCandidate16no4v, CheckCandidateInt,
144                            CheckCandidateDirect, CheckCandidateDirectno4v,
145                            CheckCandidate8;
146    CheckFunc *CheckCandidate;
147    
148    /*
149     * Calculate the min/max range (in halfpixels)
150     * relative to the _MACROBLOCK_ position
151     */
152    static void __inline
153    get_range(int32_t * const min_dx,
154                      int32_t * const max_dx,
155                      int32_t * const min_dy,
156                      int32_t * const max_dy,
157                      const uint32_t x,
158                      const uint32_t y,
159                      const uint32_t block_sz,      /* block dimension, 8 or 16 */
160                      const uint32_t width,
161                      const uint32_t height,
162                      const uint32_t fcode,
163                      const uint32_t quarterpel)
164    {
165    
166            int k;
167            const int search_range = 32 << (fcode - 1 - quarterpel);
168            const int high = search_range - 1;
169            const int low = -search_range;
170    
171            k = 2 * (int)(width - x*block_sz);
172            *max_dx = MIN(high, k);
173            k = 2 * (int)(height -  y*block_sz);
174            *max_dy = MIN(high, k);
175    
176            k = -2 * (int)((x+1) * block_sz);
177            *min_dx = MAX(low, k);
178            k = -2 * (int)((y+1) * block_sz);
179            *min_dy = MAX(low, k);
180    
181    }
182    
183    
184    typedef void MainSearchFunc(int x, int y, const SearchData * const Data, int bDirection);
185    
186    static MainSearchFunc DiamondSearch, AdvDiamondSearch, SquareSearch;
187    
188    static void Search8(const SearchData * const OldData,
189                            const int x, const int y,
190                            const uint32_t MotionFlags,
191                            const MBParam * const pParam,
192                            MACROBLOCK * const pMB,
193                            const MACROBLOCK * const pMBs,
194                            const int block,
195                            SearchData * const Data);
196    
197    bool
198    MotionEstimation(MBParam * const pParam,
199                                     FRAMEINFO * const current,
200                                     FRAMEINFO * const reference,
201                                     const IMAGE * const pRefH,
202                                     const IMAGE * const pRefV,
203                                     const IMAGE * const pRefHV,
204                                     const uint32_t iLimit);
205    
206    static void
207    SearchP(const uint8_t * const pRef,
208                    const uint8_t * const pRefH,
209                    const uint8_t * const pRefV,
210                    const uint8_t * const pRefHV,
211                    const uint8_t * const pRefQ,
212                    const IMAGE * const pCur,
213                    const int x,
214                    const int y,
215                    const uint32_t MotionFlags,
216                    const uint32_t iQuant,
217                    SearchData * const Data,
218                    const MBParam * const pParam,
219                    const MACROBLOCK * const pMBs,
220                    const MACROBLOCK * const prevMBs,
221                    int inter4v,
222                    MACROBLOCK * const pMB);
223    
224    
225    #ifdef _SMP
226    bool
227    SMP_MotionEstimation(MBParam * const pParam,
228                                     FRAMEINFO * const current,
229                                     FRAMEINFO * const reference,
230                                     const IMAGE * const pRefH,
231                                     const IMAGE * const pRefV,
232                                     const IMAGE * const pRefHV,
233                                     const uint32_t iLimit);
234    #endif
235    
236    #endif                                                  /* _MOTION_EST_H_ */
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