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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 : edgomez 1053 * $Id: motion_est.h,v 1.3.2.8 2003-06-09 01:22:18 edgomez 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 : edgomez 1053 /* very large value */
43 : edgomez 851 #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 : edgomez 1023 #define BITS_MULT 16
54 :    
55 : edgomez 851 /* Parameters which control inter/inter4v decision */
56 :     #define IMV16X16 2
57 :    
58 :     static const int lambda_vec16[32] =
59 :     { 0 ,(int)(1.00235 * NEIGH_TEND_16X16 + 0.5),
60 :     (int)(1.15582*NEIGH_TEND_16X16 + 0.5), (int)(1.31976*NEIGH_TEND_16X16 + 0.5),
61 :     (int)(1.49591*NEIGH_TEND_16X16 + 0.5), (int)(1.68601*NEIGH_TEND_16X16 + 0.5),
62 :     (int)(1.89187*NEIGH_TEND_16X16 + 0.5), (int)(2.11542*NEIGH_TEND_16X16 + 0.5),
63 :     (int)(2.35878*NEIGH_TEND_16X16 + 0.5), (int)(2.62429*NEIGH_TEND_16X16 + 0.5),
64 :     (int)(2.91455*NEIGH_TEND_16X16 + 0.5), (int)(3.23253*NEIGH_TEND_16X16 + 0.5),
65 :     (int)(3.58158*NEIGH_TEND_16X16 + 0.5), (int)(3.96555*NEIGH_TEND_16X16 + 0.5),
66 :     (int)(4.38887*NEIGH_TEND_16X16 + 0.5), (int)(4.85673*NEIGH_TEND_16X16 + 0.5),
67 :     (int)(5.37519*NEIGH_TEND_16X16 + 0.5), (int)(5.95144*NEIGH_TEND_16X16 + 0.5),
68 :     (int)(6.59408*NEIGH_TEND_16X16 + 0.5), (int)(7.31349*NEIGH_TEND_16X16 + 0.5),
69 :     (int)(8.12242*NEIGH_TEND_16X16 + 0.5), (int)(9.03669*NEIGH_TEND_16X16 + 0.5),
70 :     (int)(10.0763*NEIGH_TEND_16X16 + 0.5), (int)(11.2669*NEIGH_TEND_16X16 + 0.5),
71 :     (int)(12.6426*NEIGH_TEND_16X16 + 0.5), (int)(14.2493*NEIGH_TEND_16X16 + 0.5),
72 :     (int)(16.1512*NEIGH_TEND_16X16 + 0.5), (int)(18.442*NEIGH_TEND_16X16 + 0.5),
73 :     (int)(21.2656*NEIGH_TEND_16X16 + 0.5), (int)(24.8580*NEIGH_TEND_16X16 + 0.5),
74 :     (int)(29.6436*NEIGH_TEND_16X16 + 0.5), (int)(36.4949*NEIGH_TEND_16X16 + 0.5) };
75 :    
76 :     static const int lambda_vec8[32] =
77 :     { 0 ,(int)(1.00235 * NEIGH_TEND_8X8 + 0.5),
78 :     (int)(1.15582 + NEIGH_TEND_8X8 + 0.5), (int)(1.31976*NEIGH_TEND_8X8 + 0.5),
79 :     (int)(1.49591*NEIGH_TEND_8X8 + 0.5), (int)(1.68601*NEIGH_TEND_8X8 + 0.5),
80 :     (int)(1.89187*NEIGH_TEND_8X8 + 0.5), (int)(2.11542*NEIGH_TEND_8X8 + 0.5),
81 :     (int)(2.35878*NEIGH_TEND_8X8 + 0.5), (int)(2.62429*NEIGH_TEND_8X8 + 0.5),
82 :     (int)(2.91455*NEIGH_TEND_8X8 + 0.5), (int)(3.23253*NEIGH_TEND_8X8 + 0.5),
83 :     (int)(3.58158*NEIGH_TEND_8X8 + 0.5), (int)(3.96555*NEIGH_TEND_8X8 + 0.5),
84 :     (int)(4.38887*NEIGH_TEND_8X8 + 0.5), (int)(4.85673*NEIGH_TEND_8X8 + 0.5),
85 :     (int)(5.37519*NEIGH_TEND_8X8 + 0.5), (int)(5.95144*NEIGH_TEND_8X8 + 0.5),
86 :     (int)(6.59408*NEIGH_TEND_8X8 + 0.5), (int)(7.31349*NEIGH_TEND_8X8 + 0.5),
87 :     (int)(8.12242*NEIGH_TEND_8X8 + 0.5), (int)(9.03669*NEIGH_TEND_8X8 + 0.5),
88 :     (int)(10.0763*NEIGH_TEND_8X8 + 0.5), (int)(11.2669*NEIGH_TEND_8X8 + 0.5),
89 :     (int)(12.6426*NEIGH_TEND_8X8 + 0.5), (int)(14.2493*NEIGH_TEND_8X8 + 0.5),
90 :     (int)(16.1512*NEIGH_TEND_8X8 + 0.5), (int)(18.442*NEIGH_TEND_8X8 + 0.5),
91 :     (int)(21.2656*NEIGH_TEND_8X8 + 0.5), (int)(24.8580*NEIGH_TEND_8X8 + 0.5),
92 :     (int)(29.6436*NEIGH_TEND_8X8 + 0.5), (int)(36.4949*NEIGH_TEND_8X8 + 0.5) };
93 :    
94 : edgomez 1053 /* mv.length table */
95 : edgomez 974 static const int mvtab[64] = {
96 :     1, 2, 3, 4, 6, 7, 7, 7,
97 :     9, 9, 9, 10, 10, 10, 10, 10,
98 :     10, 10, 10, 10, 10, 10, 10, 10,
99 :     10, 11, 11, 11, 11, 11, 11, 12,
100 :     12, 12, 12, 12, 12, 12, 12, 12,
101 :     12, 12, 12, 12, 12, 12, 12, 12,
102 :     12, 12, 12, 12, 12, 12, 12, 12, 12 };
103 : edgomez 851
104 :     static const int DQtab[4] = {
105 :     -1, -2, 1, 2
106 :     };
107 :    
108 :     #define RRV_MV_SCALEDOWN(a) ( (a)>=0 ? (a+1)/2 : (a-1)/2 )
109 :    
110 :     typedef struct
111 :     {
112 : edgomez 1053 /* general fields */
113 : edgomez 851 int max_dx, min_dx, max_dy, min_dy;
114 :     uint32_t rounding;
115 :     VECTOR predMV;
116 :     VECTOR * currentMV;
117 :     VECTOR * currentQMV;
118 :     int32_t * iMinSAD;
119 : edgomez 1053 const uint8_t * RefP[6]; /* N, V, H, HV, cU, cV */
120 : edgomez 851 const uint8_t * CurU;
121 :     const uint8_t * CurV;
122 :     uint8_t * RefQ;
123 :     const uint8_t * Cur;
124 :     uint32_t lambda16;
125 :     uint32_t lambda8;
126 :     uint32_t iEdgedWidth;
127 :     uint32_t iFcode;
128 :     int * temp;
129 :     int qpel, qpel_precision;
130 :     int chroma;
131 :     int rrv;
132 : edgomez 1053
133 :     /* fields for interpolate and direct modes */
134 :     const uint8_t * b_RefP[6]; /* N, V, H, HV, cU, cV */
135 : edgomez 851 VECTOR bpredMV;
136 :     uint32_t bFcode;
137 : edgomez 1053
138 :     /* fields for direct mode */
139 : edgomez 851 VECTOR directmvF[4];
140 :     VECTOR directmvB[4];
141 :     const VECTOR * referencemv;
142 : edgomez 1053
143 :     /* BITS/R-D stuff */
144 : edgomez 959 int16_t * dctSpace;
145 : edgomez 1022 uint32_t iQuant;
146 :     uint32_t quant_type;
147 : edgomez 851
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 : edgomez 1022 const uint32_t VopFlags,
228 :     const uint32_t VolFlags,
229 : edgomez 851 SearchData * const Data,
230 :     const MBParam * const pParam,
231 :     const MACROBLOCK * const pMBs,
232 :     const MACROBLOCK * const prevMBs,
233 :     MACROBLOCK * const pMB);
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 :     static __inline uint32_t
247 : suxen_drol 890 MakeGoodMotionFlags(const uint32_t MotionFlags, const uint32_t VopFlags, const uint32_t VolFlags)
248 : edgomez 851 {
249 :     uint32_t Flags = MotionFlags;
250 :    
251 : edgomez 949 if (!(VopFlags & XVID_VOP_MODEDECISION_BITS))
252 :     Flags &= ~(XVID_ME_QUARTERPELREFINE16_BITS+XVID_ME_QUARTERPELREFINE8_BITS+XVID_ME_HALFPELREFINE16_BITS+XVID_ME_HALFPELREFINE8_BITS+XVID_ME_EXTSEARCH_BITS);
253 : edgomez 851
254 : edgomez 949 if (Flags & XVID_ME_EXTSEARCH_BITS)
255 :     Flags |= XVID_ME_HALFPELREFINE16_BITS;
256 : edgomez 851
257 : edgomez 949 if (Flags & XVID_ME_EXTSEARCH_BITS && MotionFlags & XVID_ME_EXTSEARCH8)
258 :     Flags |= XVID_ME_HALFPELREFINE8_BITS;
259 : edgomez 851
260 : edgomez 949 if (Flags & XVID_ME_HALFPELREFINE16_BITS)
261 :     Flags |= XVID_ME_QUARTERPELREFINE16_BITS;
262 : edgomez 851
263 : edgomez 949 if (Flags & XVID_ME_HALFPELREFINE8_BITS) {
264 :     Flags |= XVID_ME_QUARTERPELREFINE8_BITS;
265 :     Flags &= ~XVID_ME_HALFPELREFINE8;
266 : edgomez 851 }
267 :    
268 : edgomez 949 if (Flags & XVID_ME_QUARTERPELREFINE8_BITS)
269 :     Flags &= ~XVID_ME_QUARTERPELREFINE8;
270 : edgomez 851
271 : edgomez 949 if (!(VolFlags & XVID_VOL_QUARTERPEL))
272 :     Flags &= ~(XVID_ME_QUARTERPELREFINE16+XVID_ME_QUARTERPELREFINE8+XVID_ME_QUARTERPELREFINE16_BITS+XVID_ME_QUARTERPELREFINE8_BITS);
273 : edgomez 851
274 : edgomez 949 if (!(VopFlags & XVID_VOP_HALFPEL))
275 :     Flags &= ~(XVID_ME_EXTSEARCH16+XVID_ME_HALFPELREFINE16+XVID_ME_HALFPELREFINE8+XVID_ME_HALFPELREFINE16_BITS+XVID_ME_HALFPELREFINE8_BITS);
276 : edgomez 851
277 : edgomez 949 if ((VopFlags & XVID_VOP_GREYSCALE) || (VopFlags & XVID_VOP_REDUCED))
278 :     Flags &= ~(XVID_ME_CHROMA16 + XVID_ME_CHROMA8);
279 : edgomez 851
280 :     return Flags;
281 :     }
282 :    
283 :     /* BITS mode decision and search */
284 :    
285 :     #include "../bitstream/zigzag.h"
286 :     #include "../quant/quant_mpeg4.h"
287 :     #include "../quant/quant_h263.h"
288 :     #include "../bitstream/vlc_codes.h"
289 : edgomez 1022 #include "../dct/fdct.h"
290 : edgomez 851
291 :     static int
292 :     CountMBBitsInter(SearchData * const Data,
293 :     const MACROBLOCK * const pMBs, const int x, const int y,
294 :     const MBParam * const pParam,
295 :     const uint32_t MotionFlags);
296 :    
297 :     static int
298 :     CountMBBitsInter4v(const SearchData * const Data,
299 :     MACROBLOCK * const pMB, const MACROBLOCK * const pMBs,
300 :     const int x, const int y,
301 :     const MBParam * const pParam, const uint32_t MotionFlags,
302 :     const VECTOR * const backup);
303 :    
304 :     static int
305 :     CountMBBitsIntra(const SearchData * const Data);
306 :    
307 :     int CodeCoeffIntra_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);
308 :     int CodeCoeffInter_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag);
309 : edgomez 1023
310 :     #define LAMBDA ( (int)(1.0*BITS_MULT) )
311 :    
312 : edgomez 1022 static __inline unsigned int
313 : edgomez 1023 Block_CalcBits( int16_t * const coeff,
314 :     int16_t * const data,
315 :     const uint32_t quant, const int quant_type,
316 :     uint32_t * cbp,
317 :     const int block)
318 : edgomez 1022 {
319 :     int sum;
320 : edgomez 1023 int bits;
321 :     const int lambda = LAMBDA*quant*quant;
322 :     int distortion = 0;
323 :     int i;
324 : edgomez 851
325 : edgomez 1022 fdct(data);
326 :    
327 :     if (quant_type == 0) sum = quant_inter(coeff, data, quant);
328 :     else sum = quant4_inter(coeff, data, quant);
329 :    
330 :     if (sum > 0) {
331 :     *cbp |= 1 << (5 - block);
332 : edgomez 1023 bits = BITS_MULT * CodeCoeffInter_CalcBits(coeff, scan_tables[0]);
333 :     } else bits = 0;
334 :    
335 :     if (quant_type == 0) dequant_inter(coeff, coeff, quant);
336 :     else dequant4_inter(coeff, coeff, quant);
337 :    
338 :     for (i = 0; i < 64; i++) {
339 :     distortion += (data[i] - coeff[i])*(data[i] - coeff[i]);
340 :     }
341 :     bits += (BITS_MULT*BITS_MULT*distortion)/lambda;
342 :    
343 :    
344 :     return bits;
345 : edgomez 1022 }
346 :    
347 : edgomez 1023 static __inline unsigned int
348 :     Block_CalcBitsIntra(int16_t * const coeff,
349 :     int16_t * const data,
350 :     const uint32_t quant, const int quant_type,
351 :     uint32_t * cbp,
352 :     const int block,
353 :     int * dcpred)
354 :     {
355 :     int bits, i;
356 :     const int lambda = LAMBDA*quant*quant;
357 :     int distortion = 0;
358 :     uint32_t iDcScaler = get_dc_scaler(quant, block > 3);
359 :     int b_dc;
360 :    
361 :     fdct(data);
362 :     data[0] -= 1024;
363 :    
364 :     if (quant_type == 0) quant_intra(coeff, data, quant, iDcScaler);
365 :     else quant4_intra(coeff, data, quant, iDcScaler);
366 :    
367 :     b_dc = coeff[0];
368 :     if (block < 4) {
369 :     coeff[0] -= *dcpred;
370 :     *dcpred = b_dc;
371 :     }
372 :    
373 :     *cbp |= 1 << (5 - block);
374 :     bits = BITS_MULT*CodeCoeffIntra_CalcBits(coeff, scan_tables[0]);
375 :     bits += BITS_MULT*dcy_tab[coeff[0] + 255].len;
376 :     if (bits != 0) *cbp |= 1 << (5 - block);
377 :    
378 :     coeff[0] = b_dc;
379 :     if (quant_type == 0) dequant_intra(coeff, coeff, quant, iDcScaler);
380 :     else dequant4_intra(coeff, coeff, quant, iDcScaler);
381 :    
382 :     for (i = 0; i < 64; i++) {
383 :     distortion += (data[i] - coeff[i])*(data[i] - coeff[i]);
384 :     }
385 :    
386 :     bits += (BITS_MULT*BITS_MULT*distortion)/lambda;
387 :    
388 :     return bits;
389 :     }
390 :    
391 : edgomez 851 #endif /* _MOTION_EST_H_ */

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