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revision 1.1, Mon Sep 23 20:36:02 2002 UTC revision 1.1.2.13, Sat Jan 11 14:59:24 2003 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    #include "../image/reduced.h"
39    
40    /* hard coded motion search parameters for motion_est and smp_motion_est */
41    
42    // very large value
43    #define MV_MAX_ERROR    (4096 * 256)
44    
45    /* INTER bias for INTER/INTRA decision; mpeg4 spec suggests 2*nb */
46    #define MV16_INTER_BIAS 512
47    
48    /* vector map (vlc delta size) smoother parameters ! float !*/
49    #define NEIGH_TEND_16X16        10.5
50    #define NEIGH_TEND_8X8          40.0
51    #define NEIGH_8X8_BIAS          30
52    
53    /* Parameters which control inter/inter4v decision */
54    #define IMV16X16                        2
55    
56    static const int lambda_vec16[32] =
57            {     0    ,(int)(1.00235 * NEIGH_TEND_16X16 + 0.5),
58            (int)(1.15582*NEIGH_TEND_16X16 + 0.5), (int)(1.31976*NEIGH_TEND_16X16 + 0.5),
59            (int)(1.49591*NEIGH_TEND_16X16 + 0.5), (int)(1.68601*NEIGH_TEND_16X16 + 0.5),
60            (int)(1.89187*NEIGH_TEND_16X16 + 0.5), (int)(2.11542*NEIGH_TEND_16X16 + 0.5),
61            (int)(2.35878*NEIGH_TEND_16X16 + 0.5), (int)(2.62429*NEIGH_TEND_16X16 + 0.5),
62            (int)(2.91455*NEIGH_TEND_16X16 + 0.5), (int)(3.23253*NEIGH_TEND_16X16 + 0.5),
63            (int)(3.58158*NEIGH_TEND_16X16 + 0.5), (int)(3.96555*NEIGH_TEND_16X16 + 0.5),
64            (int)(4.38887*NEIGH_TEND_16X16 + 0.5), (int)(4.85673*NEIGH_TEND_16X16 + 0.5),
65            (int)(5.37519*NEIGH_TEND_16X16 + 0.5), (int)(5.95144*NEIGH_TEND_16X16 + 0.5),
66            (int)(6.59408*NEIGH_TEND_16X16 + 0.5), (int)(7.31349*NEIGH_TEND_16X16 + 0.5),
67            (int)(8.12242*NEIGH_TEND_16X16 + 0.5), (int)(9.03669*NEIGH_TEND_16X16 + 0.5),
68            (int)(10.0763*NEIGH_TEND_16X16 + 0.5), (int)(11.2669*NEIGH_TEND_16X16 + 0.5),
69            (int)(12.6426*NEIGH_TEND_16X16 + 0.5), (int)(14.2493*NEIGH_TEND_16X16 + 0.5),
70            (int)(16.1512*NEIGH_TEND_16X16 + 0.5), (int)(18.442*NEIGH_TEND_16X16 + 0.5),
71            (int)(21.2656*NEIGH_TEND_16X16 + 0.5), (int)(24.8580*NEIGH_TEND_16X16 + 0.5),
72            (int)(29.6436*NEIGH_TEND_16X16 + 0.5), (int)(36.4949*NEIGH_TEND_16X16 + 0.5)    };
73    
74    static const int lambda_vec8[32] =
75            {     0    ,(int)(1.00235 * NEIGH_TEND_8X8 + 0.5),
76            (int)(1.15582 + NEIGH_TEND_8X8 + 0.5), (int)(1.31976*NEIGH_TEND_8X8 + 0.5),
77            (int)(1.49591*NEIGH_TEND_8X8 + 0.5), (int)(1.68601*NEIGH_TEND_8X8 + 0.5),
78            (int)(1.89187*NEIGH_TEND_8X8 + 0.5), (int)(2.11542*NEIGH_TEND_8X8 + 0.5),
79            (int)(2.35878*NEIGH_TEND_8X8 + 0.5), (int)(2.62429*NEIGH_TEND_8X8 + 0.5),
80            (int)(2.91455*NEIGH_TEND_8X8 + 0.5), (int)(3.23253*NEIGH_TEND_8X8 + 0.5),
81            (int)(3.58158*NEIGH_TEND_8X8 + 0.5), (int)(3.96555*NEIGH_TEND_8X8 + 0.5),
82            (int)(4.38887*NEIGH_TEND_8X8 + 0.5), (int)(4.85673*NEIGH_TEND_8X8 + 0.5),
83            (int)(5.37519*NEIGH_TEND_8X8 + 0.5), (int)(5.95144*NEIGH_TEND_8X8 + 0.5),
84            (int)(6.59408*NEIGH_TEND_8X8 + 0.5), (int)(7.31349*NEIGH_TEND_8X8 + 0.5),
85            (int)(8.12242*NEIGH_TEND_8X8 + 0.5), (int)(9.03669*NEIGH_TEND_8X8 + 0.5),
86            (int)(10.0763*NEIGH_TEND_8X8 + 0.5), (int)(11.2669*NEIGH_TEND_8X8 + 0.5),
87            (int)(12.6426*NEIGH_TEND_8X8 + 0.5), (int)(14.2493*NEIGH_TEND_8X8 + 0.5),
88            (int)(16.1512*NEIGH_TEND_8X8 + 0.5), (int)(18.442*NEIGH_TEND_8X8 + 0.5),
89            (int)(21.2656*NEIGH_TEND_8X8 + 0.5), (int)(24.8580*NEIGH_TEND_8X8 + 0.5),
90            (int)(29.6436*NEIGH_TEND_8X8 + 0.5), (int)(36.4949*NEIGH_TEND_8X8 + 0.5)        };
91    
92    // mv.length table
93    static const uint32_t mvtab[33] = {
94            1, 2, 3, 4, 6, 7, 7, 7,
95            9, 9, 9, 10, 10, 10, 10, 10,
96            10, 10, 10, 10, 10, 10, 10, 10,
97            10, 11, 11, 11, 11, 11, 11, 12, 12
98    };
99    
100    static const int DQtab[4] = {
101            -1, -2, 1, 2
102    };
103    
104    #define RRV_MV_SCALEDOWN(a)     ( (a)>=0 ? (a+1)/2 : (a-1)/2 )
105    
106    static const VECTOR zeroMV = {0,0};
107    
108    typedef struct
109    {
110    // general fields
111            int max_dx, min_dx, max_dy, min_dy;
112            uint32_t rounding;
113            VECTOR predMV;
114            VECTOR * currentMV;
115            VECTOR * currentQMV;
116            int32_t * iMinSAD;
117            const uint8_t * Ref;
118            const uint8_t * RefH;
119            const uint8_t * RefV;
120            const uint8_t * RefHV;
121            const uint8_t * RefCU;
122            const uint8_t * RefCV;
123            const uint8_t * CurU;
124            const uint8_t * CurV;
125            uint8_t * RefQ;
126            const uint8_t * Cur;
127            uint32_t lambda16;
128            uint32_t lambda8;
129            uint32_t iEdgedWidth;
130            uint32_t iFcode;
131            int * temp;
132            int qpel, qpel_precision;
133            int chroma;
134            int rrv;
135    //fields for interpolate and direct modes
136            const uint8_t * bRef;
137            const uint8_t * bRefH;
138            const uint8_t * bRefV;
139            const uint8_t * bRefHV;
140            VECTOR bpredMV;
141            uint32_t bFcode;
142    // fields for direct mode
143            VECTOR directmvF[4];
144            VECTOR directmvB[4];
145            const VECTOR * referencemv;
146    
147    } SearchData;
148    
149    
150    typedef void(CheckFunc)(const int x, const int y,
151                                                    const int Direction, int * const dir,
152                                                    const SearchData * const Data);
153    CheckFunc *CheckCandidate;
154    
155    /*
156     * Calculate the min/max range
157     * relative to the _MACROBLOCK_ position
158     */
159    static void __inline
160    get_range(int32_t * const min_dx,
161                      int32_t * const max_dx,
162                      int32_t * const min_dy,
163                      int32_t * const max_dy,
164                      const uint32_t x,
165                      const uint32_t y,
166                      uint32_t block_sz, /* block dimension, 8 or 16 */
167                      const uint32_t width,
168                      const uint32_t height,
169                      const uint32_t fcode,
170                      const int qpel, /* 1 if the resulting range should be in qpel precision; otherwise 0 */
171                      const int rrv)
172    {
173            int k, m = qpel ? 4 : 2;
174            const int search_range = 32 << (fcode - 1);
175            int high = search_range - 1;
176            int low = -search_range;
177    
178            if (rrv) {
179                    high = RRV_MV_SCALEUP(high);
180                    low = RRV_MV_SCALEUP(low);
181                    block_sz *= 2;
182            }
183    
184            k = m * (int)(width - x * block_sz);
185            *max_dx = MIN(high, k);
186            k = m * (int)(height -  y * block_sz);
187            *max_dy = MIN(high, k);
188    
189            k = -m * (int)((x+1) * block_sz);
190            *min_dx = MAX(low, k);
191            k = -m * (int)((y+1) * block_sz);
192            *min_dy = MAX(low, k);
193    }
194    
195    typedef void MainSearchFunc(int x, int y, const SearchData * const Data, int bDirection);
196    
197    static MainSearchFunc DiamondSearch, AdvDiamondSearch, SquareSearch;
198    
199    static void Search8(const SearchData * const OldData,
200                            const int x, const int y,
201                            const uint32_t MotionFlags,
202                            const MBParam * const pParam,
203                            MACROBLOCK * const pMB,
204                            const MACROBLOCK * const pMBs,
205                            const int block,
206                            SearchData * const Data);
207    
208    bool
209    MotionEstimation(MBParam * const pParam,
210                                     FRAMEINFO * const current,
211                                     FRAMEINFO * const reference,
212                                     const IMAGE * const pRefH,
213                                     const IMAGE * const pRefV,
214                                     const IMAGE * const pRefHV,
215                                     const uint32_t iLimit);
216    
217    static void
218    SearchP(const IMAGE * const pRef,
219                    const uint8_t * const pRefH,
220                    const uint8_t * const pRefV,
221                    const uint8_t * const pRefHV,
222                    const IMAGE * const pCur,
223                    const int x,
224                    const int y,
225                    const uint32_t MotionFlags,
226                    const uint32_t iQuant,
227                    SearchData * const Data,
228                    const MBParam * const pParam,
229                    const MACROBLOCK * const pMBs,
230                    const MACROBLOCK * const prevMBs,
231                    int inter4v,
232                    MACROBLOCK * const pMB);
233    
234    
235    static WARPPOINTS
236    GlobalMotionEst(const MACROBLOCK * const pMBs,
237                                    const MBParam * const pParam,
238                                    const FRAMEINFO * const current,
239                                    const FRAMEINFO * const reference,
240                                    const IMAGE * const pRefH,
241                                    const IMAGE * const pRefV,
242                                    const IMAGE * const pRefHV      );
243    
244    #define iDiamondSize 2
245    
246    #endif                                                  /* _MOTION_EST_H_ */
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