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1 : edgomez 851 /**************************************************************************
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 : syskin 884 * $Id: motion_est.h,v 1.3 2003-02-21 14:40:11 syskin Exp $
30 : edgomez 851 *
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 :     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 modes
134 :     const uint8_t * bRef;
135 :     const uint8_t * bRefH;
136 :     const uint8_t * bRefV;
137 :     const uint8_t * bRefHV;
138 :     const uint8_t * b_RefCU;
139 :     const uint8_t * b_RefCV;
140 :    
141 :     VECTOR bpredMV;
142 :     uint32_t bFcode;
143 :     // fields for direct mode
144 :     VECTOR directmvF[4];
145 :     VECTOR directmvB[4];
146 :     const VECTOR * referencemv;
147 :    
148 :     } SearchData;
149 :    
150 :    
151 :     typedef void(CheckFunc)(const int x, const int y,
152 :     const int Direction, int * const dir,
153 :     const SearchData * const Data);
154 :     CheckFunc *CheckCandidate;
155 :    
156 :     /*
157 :     * Calculate the min/max range
158 :     * relative to the _MACROBLOCK_ position
159 :     */
160 :     static void __inline
161 :     get_range(int32_t * const min_dx,
162 :     int32_t * const max_dx,
163 :     int32_t * const min_dy,
164 :     int32_t * const max_dy,
165 :     const uint32_t x,
166 :     const uint32_t y,
167 :     uint32_t block_sz, /* block dimension, 8 or 16 */
168 :     const uint32_t width,
169 :     const uint32_t height,
170 :     const uint32_t fcode,
171 :     const int qpel, /* 1 if the resulting range should be in qpel precision; otherwise 0 */
172 :     const int rrv)
173 :     {
174 :     int k, m = qpel ? 4 : 2;
175 :     const int search_range = 32 << (fcode - 1);
176 :     int high = search_range - 1;
177 :     int low = -search_range;
178 :    
179 :     if (rrv) {
180 :     high = RRV_MV_SCALEUP(high);
181 :     low = RRV_MV_SCALEUP(low);
182 :     block_sz *= 2;
183 :     }
184 :    
185 :     k = m * (int)(width - x * block_sz);
186 :     *max_dx = MIN(high, k);
187 :     k = m * (int)(height - y * block_sz);
188 :     *max_dy = MIN(high, k);
189 :    
190 :     k = -m * (int)((x+1) * block_sz);
191 :     *min_dx = MAX(low, k);
192 :     k = -m * (int)((y+1) * block_sz);
193 :     *min_dy = MAX(low, k);
194 :     }
195 :    
196 :     typedef void MainSearchFunc(int x, int y, const SearchData * const Data, int bDirection);
197 :    
198 :     static MainSearchFunc DiamondSearch, AdvDiamondSearch, SquareSearch;
199 :    
200 :     static void Search8(const SearchData * const OldData,
201 :     const int x, const int y,
202 :     const uint32_t MotionFlags,
203 :     const MBParam * const pParam,
204 :     MACROBLOCK * const pMB,
205 :     const MACROBLOCK * const pMBs,
206 :     const int block,
207 :     SearchData * const Data);
208 :    
209 :     bool
210 :     MotionEstimation(MBParam * const pParam,
211 : syskin 884 FRAMEINFO * const current,
212 :     FRAMEINFO * const reference,
213 :     const IMAGE * const pRefH,
214 :     const IMAGE * const pRefV,
215 :     const IMAGE * const pRefHV,
216 :     const uint32_t iLimit);
217 : edgomez 851
218 :     static void
219 :     SearchP(const IMAGE * const pRef,
220 :     const uint8_t * const pRefH,
221 :     const uint8_t * const pRefV,
222 :     const uint8_t * const pRefHV,
223 :     const IMAGE * const pCur,
224 :     const int x,
225 :     const int y,
226 :     const uint32_t MotionFlags,
227 :     const uint32_t GlobalFlags,
228 :     const uint32_t iQuant,
229 :     SearchData * const Data,
230 :     const MBParam * const pParam,
231 :     const MACROBLOCK * const pMBs,
232 :     const MACROBLOCK * const prevMBs,
233 :     int inter4v,
234 :     MACROBLOCK * const pMB);
235 :    
236 :    
237 :     static WARPPOINTS
238 :     GlobalMotionEst(const MACROBLOCK * const pMBs,
239 :     const MBParam * const pParam,
240 :     const FRAMEINFO * const current,
241 :     const FRAMEINFO * const reference,
242 :     const IMAGE * const pRefH,
243 :     const IMAGE * const pRefV,
244 :     const IMAGE * const pRefHV );
245 :    
246 :     #define iDiamondSize 2
247 :    
248 :     static __inline uint32_t
249 :     MakeGoodMotionFlags(const uint32_t MotionFlags, const uint32_t GlobalFlags)
250 :     {
251 :     uint32_t Flags = MotionFlags;
252 :    
253 :     if (!(GlobalFlags & XVID_MODEDECISION_BITS))
254 :     Flags &= ~(QUARTERPELREFINE16_BITS+QUARTERPELREFINE8_BITS+HALFPELREFINE16_BITS+HALFPELREFINE8_BITS+EXTSEARCH_BITS);
255 :    
256 :     if (Flags & EXTSEARCH_BITS)
257 :     Flags |= HALFPELREFINE16_BITS;
258 :    
259 :     if (Flags & EXTSEARCH_BITS && MotionFlags & PMV_EXTSEARCH8)
260 :     Flags |= HALFPELREFINE8_BITS;
261 :    
262 :     if (Flags & HALFPELREFINE16_BITS)
263 :     Flags |= QUARTERPELREFINE16_BITS;
264 :    
265 :     if (Flags & HALFPELREFINE8_BITS) {
266 :     Flags |= QUARTERPELREFINE8_BITS;
267 :     Flags &= ~PMV_HALFPELREFINE8;
268 :     }
269 :    
270 :     if (Flags & QUARTERPELREFINE8_BITS)
271 :     Flags &= ~PMV_QUARTERPELREFINE8;
272 :    
273 :     if (!(GlobalFlags & XVID_QUARTERPEL))
274 :     Flags &= ~(PMV_QUARTERPELREFINE16+PMV_QUARTERPELREFINE8+QUARTERPELREFINE16_BITS+QUARTERPELREFINE8_BITS);
275 :    
276 :     if (!(GlobalFlags & XVID_HALFPEL))
277 :     Flags &= ~(PMV_EXTSEARCH16+PMV_HALFPELREFINE16+PMV_HALFPELREFINE8+HALFPELREFINE16_BITS+HALFPELREFINE8_BITS);
278 :    
279 :     if (GlobalFlags & (XVID_GREYSCALE + XVID_REDUCED))
280 :     Flags &= ~(PMV_CHROMA16 + PMV_CHROMA8);
281 :    
282 :     return Flags;
283 :     }
284 :    
285 :     /* BITS mode decision and search */
286 :    
287 :     #include "../bitstream/zigzag.h"
288 :     #include "../quant/quant_mpeg4.h"
289 :     #include "../quant/quant_h263.h"
290 :     #include "../bitstream/vlc_codes.h"
291 :    
292 :     static int
293 :     CountMBBitsInter(SearchData * const Data,
294 :     const MACROBLOCK * const pMBs, const int x, const int y,
295 :     const MBParam * const pParam,
296 :     const uint32_t MotionFlags);
297 :    
298 :     static int
299 :     CountMBBitsInter4v(const SearchData * const Data,
300 :     MACROBLOCK * const pMB, const MACROBLOCK * const pMBs,
301 :     const int x, const int y,
302 :     const MBParam * const pParam, const uint32_t MotionFlags,
303 :     const VECTOR * const backup);
304 :    
305 :     static int
306 :     CountMBBitsIntra(const SearchData * const Data);
307 :    
308 :     int CodeCoeffIntra_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);
309 :     int CodeCoeffInter_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);
310 :    
311 :     #endif /* _MOTION_EST_H_ */

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