[svn] / branches / dev-api-3 / xvidcore / src / motion / motion_est.c Repository:
ViewVC logotype

Annotation of /branches/dev-api-3/xvidcore/src/motion/motion_est.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 769 - (view) (download)

1 : Isibaar 3 /**************************************************************************
2 :     *
3 : chl 259 * XVID MPEG-4 VIDEO CODEC
4 : syskin 748 * motion estimation
5 : chl 259 *
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., 675 Mass Ave, Cambridge, MA 02139, USA.
28 :     *
29 :     *************************************************************************/
30 :    
31 : Isibaar 3 #include <assert.h>
32 :     #include <stdio.h>
33 : chl 96 #include <stdlib.h>
34 : suxen_drol 721 #include <string.h> // memcpy
35 : chl 769 #include <math.h> // lrint
36 : Isibaar 3
37 :     #include "../encoder.h"
38 :     #include "../utils/mbfunctions.h"
39 :     #include "../prediction/mbprediction.h"
40 :     #include "../global.h"
41 :     #include "../utils/timer.h"
42 : Isibaar 580 #include "../image/interpolate8x8.h"
43 : chl 530 #include "motion_est.h"
44 : suxen_drol 118 #include "motion.h"
45 : Isibaar 3 #include "sad.h"
46 : Isibaar 539 #include "../utils/emms.h"
47 : Isibaar 3
48 : chl 530 #define INITIAL_SKIP_THRESH (10)
49 :     #define FINAL_SKIP_THRESH (50)
50 :     #define MAX_SAD00_FOR_SKIP (20)
51 : Isibaar 539 #define MAX_CHROMA_SAD_FOR_SKIP (22)
52 : Isibaar 3
53 : chl 530 #define CHECK_CANDIDATE(X,Y,D) { \
54 :     (*CheckCandidate)((const int)(X),(const int)(Y), (D), &iDirection, data ); }
55 : Isibaar 3
56 : syskin 768 static __inline uint32_t
57 : syskin 724 d_mv_bits(int x, int y, const VECTOR pred, const uint32_t iFcode, const int qpel, const int rrv)
58 : Isibaar 3 {
59 : chl 530 int xb, yb;
60 : syskin 768 x += x * qpel; y += y * qpel;
61 :     if (rrv) { x = RRV_MV_SCALEDOWN(x); y = RRV_MV_SCALEDOWN(y); }
62 : syskin 748 x -= pred.x;
63 :     y -= pred.y;
64 : syskin 768
65 : syskin 748 if (x) {
66 : syskin 768 x = ABS(x);
67 : chl 530 x += (1 << (iFcode - 1)) - 1;
68 :     x >>= (iFcode - 1);
69 :     if (x > 32) x = 32;
70 :     xb = mvtab[x] + iFcode;
71 : syskin 748 } else xb = 1;
72 : Isibaar 3
73 : syskin 748 if (y) {
74 : syskin 768 y = ABS(y);
75 : chl 530 y += (1 << (iFcode - 1)) - 1;
76 :     y >>= (iFcode - 1);
77 :     if (y > 32) y = 32;
78 :     yb = mvtab[y] + iFcode;
79 : syskin 748 } else yb = 1;
80 : chl 530 return xb + yb;
81 : Isibaar 3 }
82 :    
83 : syskin 748 static int32_t
84 : syskin 628 ChromaSAD(int dx, int dy, const SearchData * const data)
85 : Isibaar 3 {
86 : syskin 628 int sad;
87 : syskin 748 const uint32_t stride = data->iEdgedWidth/2;
88 : Isibaar 3
89 : syskin 712 if (dx == data->temp[5] && dy == data->temp[6]) return data->temp[7]; //it has been checked recently
90 : syskin 768 data->temp[5] = dx; data->temp[6] = dy; // backup
91 : syskin 712
92 :     switch (((dx & 1) << 1) | (dy & 1)) {
93 : syskin 628 case 0:
94 : syskin 748 dx = dx / 2; dy = dy / 2;
95 :     sad = sad8(data->CurU, data->RefCU + dy * stride + dx, stride);
96 :     sad += sad8(data->CurV, data->RefCV + dy * stride + dx, stride);
97 : syskin 628 break;
98 :     case 1:
99 :     dx = dx / 2; dy = (dy - 1) / 2;
100 : syskin 748 sad = sad8bi(data->CurU, data->RefCU + dy * stride + dx, data->RefCU + (dy+1) * stride + dx, stride);
101 :     sad += sad8bi(data->CurV, data->RefCV + dy * stride + dx, data->RefCV + (dy+1) * stride + dx, stride);
102 : syskin 628 break;
103 :     case 2:
104 :     dx = (dx - 1) / 2; dy = dy / 2;
105 : syskin 748 sad = sad8bi(data->CurU, data->RefCU + dy * stride + dx, data->RefCU + dy * stride + dx+1, stride);
106 :     sad += sad8bi(data->CurV, data->RefCV + dy * stride + dx, data->RefCV + dy * stride + dx+1, stride);
107 : syskin 628 break;
108 :     default:
109 :     dx = (dx - 1) / 2; dy = (dy - 1) / 2;
110 : syskin 748 interpolate8x8_halfpel_hv(data->RefQ, data->RefCU + dy * stride + dx, stride, data->rounding);
111 :     sad = sad8(data->CurU, data->RefQ, stride);
112 :    
113 :     interpolate8x8_halfpel_hv(data->RefQ, data->RefCV + dy * stride + dx, stride, data->rounding);
114 :     sad += sad8(data->CurV, data->RefQ, stride);
115 : syskin 628 break;
116 : chl 530 }
117 : syskin 748 data->temp[7] = sad; //backup, part 2
118 : syskin 628 return sad;
119 :     }
120 : Isibaar 3
121 : syskin 663 static __inline const uint8_t *
122 : syskin 768 GetReferenceB(const int x, const int y, const uint32_t dir, const SearchData * const data)
123 : Isibaar 606 {
124 : syskin 663 // dir : 0 = forward, 1 = backward
125 :     switch ( (dir << 2) | ((x&1)<<1) | (y&1) ) {
126 :     case 0 : return data->Ref + x/2 + (y/2)*(data->iEdgedWidth);
127 :     case 1 : return data->RefV + x/2 + ((y-1)/2)*(data->iEdgedWidth);
128 :     case 2 : return data->RefH + (x-1)/2 + (y/2)*(data->iEdgedWidth);
129 :     case 3 : return data->RefHV + (x-1)/2 + ((y-1)/2)*(data->iEdgedWidth);
130 :     case 4 : return data->bRef + x/2 + (y/2)*(data->iEdgedWidth);
131 :     case 5 : return data->bRefV + x/2 + ((y-1)/2)*(data->iEdgedWidth);
132 :     case 6 : return data->bRefH + (x-1)/2 + (y/2)*(data->iEdgedWidth);
133 :     default : return data->bRefHV + (x-1)/2 + ((y-1)/2)*(data->iEdgedWidth);
134 : Isibaar 606 }
135 :     }
136 :    
137 : syskin 748 // this is a simpler copy of GetReferenceB, but as it's __inline anyway, we can keep the two separate
138 :     static __inline const uint8_t *
139 :     GetReference(const int x, const int y, const SearchData * const data)
140 :     {
141 :     switch ( ((x&1)<<1) | (y&1) ) {
142 :     case 0 : return data->Ref + x/2 + (y/2)*(data->iEdgedWidth);
143 :     case 1 : return data->RefV + x/2 + ((y-1)/2)*(data->iEdgedWidth);
144 :     case 2 : return data->RefH + (x-1)/2 + (y/2)*(data->iEdgedWidth);
145 :     default : return data->RefHV + (x-1)/2 + ((y-1)/2)*(data->iEdgedWidth);
146 :     }
147 :     }
148 :    
149 :     static uint8_t *
150 : syskin 768 Interpolate8x8qpel(const int x, const int y, const uint32_t block, const uint32_t dir, const SearchData * const data)
151 : chl 530 {
152 : syskin 663 // create or find a qpel-precision reference picture; return pointer to it
153 : syskin 768 uint8_t * Reference = data->RefQ + 16*dir;
154 :     const uint32_t iEdgedWidth = data->iEdgedWidth;
155 : syskin 663 const uint32_t rounding = data->rounding;
156 :     const int halfpel_x = x/2;
157 :     const int halfpel_y = y/2;
158 :     const uint8_t *ref1, *ref2, *ref3, *ref4;
159 : chl 326
160 : syskin 748 ref1 = GetReferenceB(halfpel_x, halfpel_y, dir, data);
161 : syskin 663 ref1 += 8 * (block&1) + 8 * (block>>1) * iEdgedWidth;
162 :     switch( ((x&1)<<1) + (y&1) ) {
163 :     case 0: // pure halfpel position
164 : syskin 740 return (uint8_t *) ref1;
165 : syskin 663 break;
166 : Isibaar 3
167 : syskin 663 case 1: // x halfpel, y qpel - top or bottom during qpel refinement
168 : syskin 748 ref2 = GetReferenceB(halfpel_x, y - halfpel_y, dir, data);
169 : syskin 663 ref2 += 8 * (block&1) + 8 * (block>>1) * iEdgedWidth;
170 : Isibaar 665 interpolate8x8_avg2(Reference, ref1, ref2, iEdgedWidth, rounding, 8);
171 : syskin 663 break;
172 : Isibaar 3
173 : syskin 663 case 2: // x qpel, y halfpel - left or right during qpel refinement
174 : syskin 748 ref2 = GetReferenceB(x - halfpel_x, halfpel_y, dir, data);
175 : syskin 663 ref2 += 8 * (block&1) + 8 * (block>>1) * iEdgedWidth;
176 : Isibaar 665 interpolate8x8_avg2(Reference, ref1, ref2, iEdgedWidth, rounding, 8);
177 : syskin 663 break;
178 : Isibaar 3
179 : syskin 663 default: // x and y in qpel resolution - the "corners" (top left/right and
180 :     // bottom left/right) during qpel refinement
181 : syskin 748 ref2 = GetReferenceB(halfpel_x, y - halfpel_y, dir, data);
182 :     ref3 = GetReferenceB(x - halfpel_x, halfpel_y, dir, data);
183 :     ref4 = GetReferenceB(x - halfpel_x, y - halfpel_y, dir, data);
184 : syskin 663 ref2 += 8 * (block&1) + 8 * (block>>1) * iEdgedWidth;
185 :     ref3 += 8 * (block&1) + 8 * (block>>1) * iEdgedWidth;
186 :     ref4 += 8 * (block&1) + 8 * (block>>1) * iEdgedWidth;
187 :     interpolate8x8_avg4(Reference, ref1, ref2, ref3, ref4, iEdgedWidth, rounding);
188 :     break;
189 :     }
190 :     return Reference;
191 : Isibaar 3 }
192 :    
193 : syskin 748 static uint8_t *
194 : syskin 768 Interpolate16x16qpel(const int x, const int y, const uint32_t dir, const SearchData * const data)
195 : Isibaar 580 {
196 : syskin 663 // create or find a qpel-precision reference picture; return pointer to it
197 : syskin 768 uint8_t * Reference = data->RefQ + 16*dir;
198 :     const uint32_t iEdgedWidth = data->iEdgedWidth;
199 : syskin 663 const uint32_t rounding = data->rounding;
200 :     const int halfpel_x = x/2;
201 :     const int halfpel_y = y/2;
202 : Isibaar 580 const uint8_t *ref1, *ref2, *ref3, *ref4;
203 :    
204 : syskin 748 ref1 = GetReferenceB(halfpel_x, halfpel_y, dir, data);
205 : syskin 663 switch( ((x&1)<<1) + (y&1) ) {
206 :     case 0: // pure halfpel position
207 : syskin 740 return (uint8_t *) ref1;
208 : Isibaar 580 case 1: // x halfpel, y qpel - top or bottom during qpel refinement
209 : syskin 748 ref2 = GetReferenceB(halfpel_x, y - halfpel_y, dir, data);
210 : Isibaar 665 interpolate8x8_avg2(Reference, ref1, ref2, iEdgedWidth, rounding, 8);
211 :     interpolate8x8_avg2(Reference+8, ref1+8, ref2+8, iEdgedWidth, rounding, 8);
212 :     interpolate8x8_avg2(Reference+8*iEdgedWidth, ref1+8*iEdgedWidth, ref2+8*iEdgedWidth, iEdgedWidth, rounding, 8);
213 :     interpolate8x8_avg2(Reference+8*iEdgedWidth+8, ref1+8*iEdgedWidth+8, ref2+8*iEdgedWidth+8, iEdgedWidth, rounding, 8);
214 : Isibaar 580 break;
215 :    
216 :     case 2: // x qpel, y halfpel - left or right during qpel refinement
217 : syskin 768 ref2 = GetReferenceB(x - halfpel_x, halfpel_y, dir, data);
218 : Isibaar 665 interpolate8x8_avg2(Reference, ref1, ref2, iEdgedWidth, rounding, 8);
219 :     interpolate8x8_avg2(Reference+8, ref1+8, ref2+8, iEdgedWidth, rounding, 8);
220 :     interpolate8x8_avg2(Reference+8*iEdgedWidth, ref1+8*iEdgedWidth, ref2+8*iEdgedWidth, iEdgedWidth, rounding, 8);
221 :     interpolate8x8_avg2(Reference+8*iEdgedWidth+8, ref1+8*iEdgedWidth+8, ref2+8*iEdgedWidth+8, iEdgedWidth, rounding, 8);
222 : Isibaar 580 break;
223 :    
224 :     default: // x and y in qpel resolution - the "corners" (top left/right and
225 :     // bottom left/right) during qpel refinement
226 : syskin 748 ref2 = GetReferenceB(halfpel_x, y - halfpel_y, dir, data);
227 :     ref3 = GetReferenceB(x - halfpel_x, halfpel_y, dir, data);
228 :     ref4 = GetReferenceB(x - halfpel_x, y - halfpel_y, dir, data);
229 : Isibaar 580 interpolate8x8_avg4(Reference, ref1, ref2, ref3, ref4, iEdgedWidth, rounding);
230 :     interpolate8x8_avg4(Reference+8, ref1+8, ref2+8, ref3+8, ref4+8, iEdgedWidth, rounding);
231 :     interpolate8x8_avg4(Reference+8*iEdgedWidth, ref1+8*iEdgedWidth, ref2+8*iEdgedWidth, ref3+8*iEdgedWidth, ref4+8*iEdgedWidth, iEdgedWidth, rounding);
232 :     interpolate8x8_avg4(Reference+8*iEdgedWidth+8, ref1+8*iEdgedWidth+8, ref2+8*iEdgedWidth+8, ref3+8*iEdgedWidth+8, ref4+8*iEdgedWidth+8, iEdgedWidth, rounding);
233 :     break;
234 :     }
235 : syskin 663 return Reference;
236 :     }
237 :    
238 :     /* CHECK_CANDIATE FUNCTIONS START */
239 :    
240 : syskin 748 static void
241 : syskin 663 CheckCandidate16(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
242 :     {
243 :     int t, xc, yc;
244 :     const uint8_t * Reference;
245 :     VECTOR * current;
246 :    
247 : syskin 768 if ( (x > data->max_dx) | (x < data->min_dx)
248 :     | (y > data->max_dy) | (y < data->min_dy) ) return;
249 : syskin 663
250 :     if (data->qpel_precision) { // x and y are in 1/4 precision
251 :     Reference = Interpolate16x16qpel(x, y, 0, data);
252 :     xc = x/2; yc = y/2; //for chroma sad
253 :     current = data->currentQMV;
254 :     } else {
255 : syskin 748 Reference = GetReference(x, y, data);
256 : syskin 663 current = data->currentMV;
257 :     xc = x; yc = y;
258 :     }
259 : syskin 768 t = d_mv_bits(x, y, data->predMV, data->iFcode, data->qpel^data->qpel_precision, 0);
260 :    
261 : syskin 663 data->temp[0] = sad16v(data->Cur, Reference, data->iEdgedWidth, data->temp + 1);
262 : Isibaar 580
263 : syskin 768 data->temp[0] += (data->lambda16 * t * data->temp[0])>>10;
264 :     data->temp[1] += (data->lambda8 * t * (data->temp[1] + NEIGH_8X8_BIAS))>>10;
265 : Isibaar 580
266 : syskin 753 if (data->chroma) data->temp[0] += ChromaSAD((xc >> 1) + roundtab_79[xc & 0x3],
267 :     (yc >> 1) + roundtab_79[yc & 0x3], data);
268 : syskin 628
269 : Isibaar 580 if (data->temp[0] < data->iMinSAD[0]) {
270 :     data->iMinSAD[0] = data->temp[0];
271 : syskin 663 current[0].x = x; current[0].y = y;
272 :     *dir = Direction; }
273 : Isibaar 580
274 :     if (data->temp[1] < data->iMinSAD[1]) {
275 : syskin 663 data->iMinSAD[1] = data->temp[1]; current[1].x = x; current[1].y= y; }
276 : Isibaar 580 if (data->temp[2] < data->iMinSAD[2]) {
277 : syskin 663 data->iMinSAD[2] = data->temp[2]; current[2].x = x; current[2].y = y; }
278 : Isibaar 580 if (data->temp[3] < data->iMinSAD[3]) {
279 : syskin 663 data->iMinSAD[3] = data->temp[3]; current[3].x = x; current[3].y = y; }
280 : Isibaar 580 if (data->temp[4] < data->iMinSAD[4]) {
281 : syskin 663 data->iMinSAD[4] = data->temp[4]; current[4].x = x; current[4].y = y; }
282 :    
283 : Isibaar 580 }
284 :    
285 : syskin 748 static void
286 : syskin 704 CheckCandidate32(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
287 :     {
288 : syskin 768 uint32_t t;
289 : syskin 704 const uint8_t * Reference;
290 :    
291 : syskin 768 if ( (!(x&1) && x !=0) | (!(y&1) && y !=0) || //non-zero integer value
292 :     (x > data->max_dx) | (x < data->min_dx)
293 :     | (y > data->max_dy) | (y < data->min_dy) ) return;
294 : syskin 704
295 : syskin 748 Reference = GetReference(x, y, data);
296 : syskin 724 t = d_mv_bits(x, y, data->predMV, data->iFcode, 0, 1);
297 : syskin 704
298 :     data->temp[0] = sad32v_c(data->Cur, Reference, data->iEdgedWidth, data->temp + 1);
299 :    
300 : syskin 768 data->temp[0] += (data->lambda16 * t * data->temp[0]) >> 10;
301 :     data->temp[1] += (data->lambda8 * t * (data->temp[1] + NEIGH_8X8_BIAS))>>10;
302 : syskin 704
303 :     if (data->temp[0] < data->iMinSAD[0]) {
304 :     data->iMinSAD[0] = data->temp[0];
305 :     data->currentMV[0].x = x; data->currentMV[0].y = y;
306 :     *dir = Direction; }
307 :    
308 :     if (data->temp[1] < data->iMinSAD[1]) {
309 :     data->iMinSAD[1] = data->temp[1]; data->currentMV[1].x = x; data->currentMV[1].y = y; }
310 :     if (data->temp[2] < data->iMinSAD[2]) {
311 :     data->iMinSAD[2] = data->temp[2]; data->currentMV[2].x = x; data->currentMV[2].y = y; }
312 :     if (data->temp[3] < data->iMinSAD[3]) {
313 :     data->iMinSAD[3] = data->temp[3]; data->currentMV[3].x = x; data->currentMV[3].y = y; }
314 :     if (data->temp[4] < data->iMinSAD[4]) {
315 :     data->iMinSAD[4] = data->temp[4]; data->currentMV[4].x = x; data->currentMV[4].y = y; }
316 :     }
317 :    
318 : syskin 748 static void
319 : syskin 663 CheckCandidate16no4v(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
320 : syskin 658 {
321 :     int32_t sad;
322 : syskin 663 const uint8_t * Reference;
323 : syskin 768 uint32_t t;
324 : syskin 663 VECTOR * current;
325 : syskin 658
326 : syskin 768 if ( (x > data->max_dx) | ( x < data->min_dx)
327 :     | (y > data->max_dy) | (y < data->min_dy) ) return;
328 : syskin 658
329 : syskin 768 if (data->rrv && (!(x&1) && x !=0) | (!(y&1) && y !=0) ) return; //non-zero even value
330 : syskin 704
331 : syskin 663 if (data->qpel_precision) { // x and y are in 1/4 precision
332 :     Reference = Interpolate16x16qpel(x, y, 0, data);
333 :     current = data->currentQMV;
334 :     } else {
335 : syskin 748 Reference = GetReference(x, y, data);
336 : syskin 663 current = data->currentMV;
337 : syskin 658 }
338 : syskin 724 t = d_mv_bits(x, y, data->predMV, data->iFcode,
339 : syskin 768 data->qpel^data->qpel_precision, data->rrv);
340 :    
341 : syskin 658 sad = sad16(data->Cur, Reference, data->iEdgedWidth, 256*4096);
342 : syskin 768 sad += (data->lambda16 * t * sad)>>10;
343 : syskin 658
344 : syskin 663 if (sad < *(data->iMinSAD)) {
345 :     *(data->iMinSAD) = sad;
346 :     current->x = x; current->y = y;
347 :     *dir = Direction; }
348 : syskin 658 }
349 :    
350 : syskin 748 static void
351 : syskin 739 CheckCandidate32I(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
352 : Isibaar 539 {
353 : syskin 658 // maximum speed - for P/B/I decision
354 : Isibaar 539
355 : syskin 768 if ( (x > data->max_dx) | (x < data->min_dx)
356 :     | (y > data->max_dy) | (y < data->min_dy) ) return;
357 : Isibaar 539
358 : syskin 739 data->temp[0] = sad32v_c(data->Cur, data->Ref + x/2 + (y/2)*(data->iEdgedWidth),
359 :     data->iEdgedWidth, data->temp+1);
360 : syskin 768
361 : syskin 739 if (data->temp[0] < *(data->iMinSAD)) {
362 :     *(data->iMinSAD) = data->temp[0];
363 : Isibaar 539 data->currentMV[0].x = x; data->currentMV[0].y = y;
364 :     *dir = Direction; }
365 : syskin 739 if (data->temp[1] < data->iMinSAD[1]) {
366 :     data->iMinSAD[1] = data->temp[1]; data->currentMV[1].x = x; data->currentMV[1].y = y; }
367 :     if (data->temp[2] < data->iMinSAD[2]) {
368 :     data->iMinSAD[2] = data->temp[2]; data->currentMV[2].x = x; data->currentMV[2].y = y; }
369 :     if (data->temp[3] < data->iMinSAD[3]) {
370 :     data->iMinSAD[3] = data->temp[3]; data->currentMV[3].x = x; data->currentMV[3].y = y; }
371 :     if (data->temp[4] < data->iMinSAD[4]) {
372 :     data->iMinSAD[4] = data->temp[4]; data->currentMV[4].x = x; data->currentMV[4].y = y; }
373 :    
374 : Isibaar 539 }
375 :    
376 : syskin 748 static void
377 : chl 530 CheckCandidateInt(const int xf, const int yf, const int Direction, int * const dir, const SearchData * const data)
378 :     {
379 : syskin 768 int32_t sad, xb, yb;
380 :     uint32_t t;
381 : chl 530 const uint8_t *ReferenceF, *ReferenceB;
382 : syskin 663 VECTOR *current;
383 : Isibaar 3
384 : syskin 768 if ( (xf > data->max_dx) | (xf < data->min_dx)
385 :     | (yf > data->max_dy) | (yf < data->min_dy) ) return;
386 : Isibaar 3
387 : syskin 768 if (!data->qpel_precision) {
388 : syskin 748 ReferenceF = GetReference(xf, yf, data);
389 : syskin 663 xb = data->currentMV[1].x; yb = data->currentMV[1].y;
390 : syskin 748 ReferenceB = GetReferenceB(xb, yb, 1, data);
391 : syskin 663 current = data->currentMV;
392 : syskin 768 } else {
393 :     ReferenceF = Interpolate16x16qpel(xf, yf, 0, data);
394 :     xb = data->currentQMV[1].x; yb = data->currentQMV[1].y;
395 :     current = data->currentQMV;
396 :     ReferenceB = Interpolate16x16qpel(xb, yb, 1, data);
397 : chl 530 }
398 : edgomez 195
399 : syskin 768 t = d_mv_bits(xf, yf, data->predMV, data->iFcode, data->qpel^data->qpel_precision, 0)
400 :     + d_mv_bits(xb, yb, data->bpredMV, data->iFcode, data->qpel^data->qpel_precision, 0);
401 :    
402 : syskin 628 sad = sad16bi(data->Cur, ReferenceF, ReferenceB, data->iEdgedWidth);
403 : syskin 768 sad += (data->lambda16 * t * sad)>>10;
404 : syskin 628
405 : chl 530 if (sad < *(data->iMinSAD)) {
406 :     *(data->iMinSAD) = sad;
407 : syskin 663 current->x = xf; current->y = yf;
408 : chl 530 *dir = Direction; }
409 : Isibaar 3 }
410 :    
411 : syskin 748 static void
412 : chl 530 CheckCandidateDirect(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
413 : Isibaar 3 {
414 : syskin 628 int32_t sad = 0;
415 : syskin 768 uint32_t k;
416 : chl 530 const uint8_t *ReferenceF;
417 :     const uint8_t *ReferenceB;
418 :     VECTOR mvs, b_mvs;
419 : Isibaar 3
420 : syskin 768 if (( x > 31) | ( x < -32) | ( y > 31) | (y < -32)) return;
421 : Isibaar 3
422 : chl 530 for (k = 0; k < 4; k++) {
423 :     mvs.x = data->directmvF[k].x + x;
424 :     b_mvs.x = ((x == 0) ?
425 :     data->directmvB[k].x
426 :     : mvs.x - data->referencemv[k].x);
427 : Isibaar 3
428 : chl 530 mvs.y = data->directmvF[k].y + y;
429 :     b_mvs.y = ((y == 0) ?
430 :     data->directmvB[k].y
431 :     : mvs.y - data->referencemv[k].y);
432 : syskin 768
433 : chl 530 if (( mvs.x > data->max_dx ) || ( mvs.x < data->min_dx )
434 :     || ( mvs.y > data->max_dy ) || ( mvs.y < data->min_dy )
435 :     || ( b_mvs.x > data->max_dx ) || ( b_mvs.x < data->min_dx )
436 :     || ( b_mvs.y > data->max_dy ) || ( b_mvs.y < data->min_dy )) return;
437 : Isibaar 3
438 : syskin 768
439 :     mvs.x *= 2 - data->qpel; mvs.y *= 2 - data->qpel;
440 :     b_mvs.x *= 2 - data->qpel; b_mvs.y *= 2 - data->qpel; //we move to qpel precision anyway
441 :    
442 : syskin 663 ReferenceF = Interpolate8x8qpel(mvs.x, mvs.y, k, 0, data);
443 :     ReferenceB = Interpolate8x8qpel(b_mvs.x, b_mvs.y, k, 1, data);
444 : syskin 768
445 : chl 530 sad += sad8bi(data->Cur + 8*(k&1) + 8*(k>>1)*(data->iEdgedWidth),
446 : syskin 768 ReferenceF, ReferenceB, data->iEdgedWidth);
447 : chl 530 if (sad > *(data->iMinSAD)) return;
448 : edgomez 78 }
449 : chl 530
450 : syskin 768 sad += (data->lambda16 * d_mv_bits(x, y, zeroMV, 1, 0, 0) * sad)>>10;
451 : syskin 628
452 : chl 530 if (sad < *(data->iMinSAD)) {
453 :     *(data->iMinSAD) = sad;
454 :     data->currentMV->x = x; data->currentMV->y = y;
455 :     *dir = Direction; }
456 : Isibaar 3 }
457 :    
458 : syskin 748 static void
459 : chl 530 CheckCandidateDirectno4v(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
460 : chl 96 {
461 : chl 530 int32_t sad;
462 :     const uint8_t *ReferenceF;
463 :     const uint8_t *ReferenceB;
464 :     VECTOR mvs, b_mvs;
465 : chl 96
466 : syskin 768 if (( x > 31) | ( x < -32) | ( y > 31) | (y < -32)) return;
467 : edgomez 195
468 : chl 530 mvs.x = data->directmvF[0].x + x;
469 :     b_mvs.x = ((x == 0) ?
470 :     data->directmvB[0].x
471 :     : mvs.x - data->referencemv[0].x);
472 : edgomez 195
473 : chl 530 mvs.y = data->directmvF[0].y + y;
474 :     b_mvs.y = ((y == 0) ?
475 :     data->directmvB[0].y
476 :     : mvs.y - data->referencemv[0].y);
477 : syskin 768
478 : chl 530 if (( mvs.x > data->max_dx ) || ( mvs.x < data->min_dx )
479 :     || ( mvs.y > data->max_dy ) || ( mvs.y < data->min_dy )
480 :     || ( b_mvs.x > data->max_dx ) || ( b_mvs.x < data->min_dx )
481 :     || ( b_mvs.y > data->max_dy ) || ( b_mvs.y < data->min_dy )) return;
482 : chl 96
483 : syskin 768 mvs.x *= 2 - data->qpel; mvs.y *= 2 - data->qpel;
484 :     b_mvs.x *= 2 - data->qpel; b_mvs.y *= 2 - data->qpel; //we move to qpel precision anyway
485 :    
486 : syskin 663 ReferenceF = Interpolate16x16qpel(mvs.x, mvs.y, 0, data);
487 :     ReferenceB = Interpolate16x16qpel(b_mvs.x, b_mvs.y, 1, data);
488 : chl 96
489 : syskin 628 sad = sad16bi(data->Cur, ReferenceF, ReferenceB, data->iEdgedWidth);
490 : syskin 768 sad += (data->lambda16 * d_mv_bits(x, y, zeroMV, 1, 0, 0) * sad)>>10;
491 : chl 96
492 : chl 530 if (sad < *(data->iMinSAD)) {
493 :     *(data->iMinSAD) = sad;
494 :     data->currentMV->x = x; data->currentMV->y = y;
495 :     *dir = Direction; }
496 :     }
497 : chl 96
498 : chl 530 static void
499 :     CheckCandidate8(const int x, const int y, const int Direction, int * const dir, const SearchData * const data)
500 :     {
501 : syskin 768 int32_t sad; uint32_t t;
502 : chl 530 const uint8_t * Reference;
503 : edgomez 195
504 : syskin 768 if ( (x > data->max_dx) | (x < data->min_dx)
505 :     | (y > data->max_dy) | (y < data->min_dy) ) return;
506 : chl 96
507 : syskin 663 if (data->qpel) Reference = Interpolate16x16qpel(x, y, 0, data);
508 : syskin 768 else Reference = GetReference(x, y, data);
509 : edgomez 195
510 : chl 530 sad = sad8(data->Cur, Reference, data->iEdgedWidth);
511 : syskin 724 t = d_mv_bits(x, y, data->predMV, data->iFcode, data->qpel && !data->qpel_precision, 0);
512 : edgomez 195
513 : syskin 768 sad += (data->lambda8 * t * (sad+NEIGH_8X8_BIAS))>>10;
514 : chl 96
515 : Isibaar 606 if (sad < *(data->iMinSAD)) {
516 :     *(data->iMinSAD) = sad;
517 :     data->currentMV->x = x; data->currentMV->y = y;
518 :     *dir = Direction; }
519 :     }
520 :    
521 : Isibaar 539 /* CHECK_CANDIATE FUNCTIONS END */
522 : chl 96
523 : chl 530 /* MAINSEARCH FUNCTIONS START */
524 : edgomez 195
525 : chl 530 static void
526 :     AdvDiamondSearch(int x, int y, const SearchData * const data, int bDirection)
527 : chl 181 {
528 :    
529 :     /* directions: 1 - left (x-1); 2 - right (x+1), 4 - up (y-1); 8 - down (y+1) */
530 :    
531 : syskin 712 int iDirection;
532 : edgomez 195
533 : syskin 712 for(;;) { //forever
534 :     iDirection = 0;
535 :     if (bDirection & 1) CHECK_CANDIDATE(x - iDiamondSize, y, 1);
536 :     if (bDirection & 2) CHECK_CANDIDATE(x + iDiamondSize, y, 2);
537 :     if (bDirection & 4) CHECK_CANDIDATE(x, y - iDiamondSize, 4);
538 :     if (bDirection & 8) CHECK_CANDIDATE(x, y + iDiamondSize, 8);
539 : chl 181
540 : syskin 712 /* now we're doing diagonal checks near our candidate */
541 : chl 181
542 : syskin 768 if (iDirection) { //if anything found
543 : syskin 712 bDirection = iDirection;
544 :     iDirection = 0;
545 :     x = data->currentMV->x; y = data->currentMV->y;
546 :     if (bDirection & 3) { //our candidate is left or right
547 :     CHECK_CANDIDATE(x, y + iDiamondSize, 8);
548 :     CHECK_CANDIDATE(x, y - iDiamondSize, 4);
549 :     } else { // what remains here is up or down
550 :     CHECK_CANDIDATE(x + iDiamondSize, y, 2);
551 : syskin 748 CHECK_CANDIDATE(x - iDiamondSize, y, 1);
552 : syskin 712 }
553 : chl 181
554 : syskin 712 if (iDirection) {
555 :     bDirection += iDirection;
556 : syskin 748 x = data->currentMV->x; y = data->currentMV->y;
557 : chl 181 }
558 : syskin 712 } else { //about to quit, eh? not so fast....
559 :     switch (bDirection) {
560 :     case 2:
561 :     CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
562 :     CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
563 :     break;
564 :     case 1:
565 :     CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
566 :     CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
567 :     break;
568 :     case 2 + 4:
569 :     CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
570 :     CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
571 :     CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
572 :     break;
573 :     case 4:
574 :     CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
575 :     CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
576 :     break;
577 :     case 8:
578 :     CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
579 :     CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
580 :     break;
581 :     case 1 + 4:
582 :     CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
583 :     CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
584 :     CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
585 :     break;
586 :     case 2 + 8:
587 :     CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
588 :     CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
589 :     CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
590 :     break;
591 :     case 1 + 8:
592 :     CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
593 :     CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
594 :     CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
595 :     break;
596 :     default: //1+2+4+8 == we didn't find anything at all
597 :     CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
598 :     CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
599 :     CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
600 :     CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
601 :     break;
602 :     }
603 :     if (!iDirection) break; //ok, the end. really
604 :     bDirection = iDirection;
605 :     x = data->currentMV->x; y = data->currentMV->y;
606 : chl 181 }
607 : syskin 712 }
608 : chl 181 }
609 :    
610 : chl 530 static void
611 :     SquareSearch(int x, int y, const SearchData * const data, int bDirection)
612 : chl 326 {
613 : chl 530 int iDirection;
614 : chl 326
615 : chl 530 do {
616 :     iDirection = 0;
617 :     if (bDirection & 1) CHECK_CANDIDATE(x - iDiamondSize, y, 1+16+64);
618 :     if (bDirection & 2) CHECK_CANDIDATE(x + iDiamondSize, y, 2+32+128);
619 :     if (bDirection & 4) CHECK_CANDIDATE(x, y - iDiamondSize, 4+16+32);
620 :     if (bDirection & 8) CHECK_CANDIDATE(x, y + iDiamondSize, 8+64+128);
621 :     if (bDirection & 16) CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1+4+16+32+64);
622 :     if (bDirection & 32) CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2+4+16+32+128);
623 :     if (bDirection & 64) CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1+8+16+64+128);
624 :     if (bDirection & 128) CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2+8+32+64+128);
625 : chl 326
626 : chl 530 bDirection = iDirection;
627 :     x = data->currentMV->x; y = data->currentMV->y;
628 :     } while (iDirection);
629 : chl 346 }
630 :    
631 : chl 530 static void
632 :     DiamondSearch(int x, int y, const SearchData * const data, int bDirection)
633 : chl 346 {
634 :    
635 : chl 181 /* directions: 1 - left (x-1); 2 - right (x+1), 4 - up (y-1); 8 - down (y+1) */
636 :    
637 : syskin 712 int iDirection;
638 : edgomez 195
639 : syskin 712 do {
640 :     iDirection = 0;
641 :     if (bDirection & 1) CHECK_CANDIDATE(x - iDiamondSize, y, 1);
642 :     if (bDirection & 2) CHECK_CANDIDATE(x + iDiamondSize, y, 2);
643 :     if (bDirection & 4) CHECK_CANDIDATE(x, y - iDiamondSize, 4);
644 :     if (bDirection & 8) CHECK_CANDIDATE(x, y + iDiamondSize, 8);
645 : chl 181
646 : syskin 712 /* now we're doing diagonal checks near our candidate */
647 : chl 181
648 : syskin 712 if (iDirection) { //checking if anything found
649 :     bDirection = iDirection;
650 :     iDirection = 0;
651 :     x = data->currentMV->x; y = data->currentMV->y;
652 :     if (bDirection & 3) { //our candidate is left or right
653 :     CHECK_CANDIDATE(x, y + iDiamondSize, 8);
654 :     CHECK_CANDIDATE(x, y - iDiamondSize, 4);
655 :     } else { // what remains here is up or down
656 :     CHECK_CANDIDATE(x + iDiamondSize, y, 2);
657 : syskin 748 CHECK_CANDIDATE(x - iDiamondSize, y, 1);
658 : chl 181 }
659 : syskin 712 bDirection += iDirection;
660 :     x = data->currentMV->x; y = data->currentMV->y;
661 : chl 181 }
662 : syskin 712 }
663 :     while (iDirection);
664 : chl 181 }
665 :    
666 : chl 530 /* MAINSEARCH FUNCTIONS END */
667 : chl 181
668 : chl 530 static void
669 : syskin 663 SubpelRefine(const SearchData * const data)
670 : chl 96 {
671 : syskin 663 /* Do a half-pel or q-pel refinement */
672 : syskin 768 const VECTOR centerMV = data->qpel_precision ? *data->currentQMV : *data->currentMV;
673 :     int iDirection; //only needed because macro expects it
674 : chl 96
675 : syskin 768 CHECK_CANDIDATE(centerMV.x, centerMV.y - 1, 0);
676 :     CHECK_CANDIDATE(centerMV.x + 1, centerMV.y - 1, 0);
677 :     CHECK_CANDIDATE(centerMV.x + 1, centerMV.y, 0);
678 :     CHECK_CANDIDATE(centerMV.x + 1, centerMV.y + 1, 0);
679 :     CHECK_CANDIDATE(centerMV.x, centerMV.y + 1, 0);
680 :     CHECK_CANDIDATE(centerMV.x - 1, centerMV.y + 1, 0);
681 :     CHECK_CANDIDATE(centerMV.x - 1, centerMV.y, 0);
682 :     CHECK_CANDIDATE(centerMV.x - 1, centerMV.y - 1, 0);
683 : Isibaar 580 }
684 :    
685 : chl 530 static __inline int
686 :     SkipDecisionP(const IMAGE * current, const IMAGE * reference,
687 :     const int x, const int y,
688 : syskin 768 const uint32_t stride, const uint32_t iQuant, int rrv)
689 : chl 96
690 : Isibaar 3 {
691 : syskin 768 if(!rrv) {
692 :     uint32_t sadC = sad8(current->u + x*8 + y*stride*8,
693 :     reference->u + x*8 + y*stride*8, stride);
694 : syskin 704 if (sadC > iQuant * MAX_CHROMA_SAD_FOR_SKIP) return 0;
695 : syskin 768 sadC += sad8(current->v + (x + y*stride)*8,
696 :     reference->v + (x + y*stride)*8, stride);
697 : syskin 704 if (sadC > iQuant * MAX_CHROMA_SAD_FOR_SKIP) return 0;
698 :     return 1;
699 : syskin 768
700 :     } else {
701 :     uint32_t sadC = sad16(current->u + x*16 + y*stride*16,
702 :     reference->u + x*16 + y*stride*16, stride, 256*4096);
703 :     if (sadC > iQuant * MAX_CHROMA_SAD_FOR_SKIP*4) return 0;
704 :     sadC += sad16(current->v + (x + y*stride)*16,
705 :     reference->v + (x + y*stride)*16, stride, 256*4096);
706 :     if (sadC > iQuant * MAX_CHROMA_SAD_FOR_SKIP*4) return 0;
707 :     return 1;
708 : syskin 704 }
709 : chl 530 }
710 : edgomez 195
711 : chl 530 static __inline void
712 :     SkipMacroblockP(MACROBLOCK *pMB, const int32_t sad)
713 :     {
714 :     pMB->mode = MODE_NOT_CODED;
715 : syskin 768 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = zeroMV;
716 :     pMB->qmvs[0] = pMB->qmvs[1] = pMB->qmvs[2] = pMB->qmvs[3] = zeroMV;
717 : chl 530 pMB->sad16 = pMB->sad8[0] = pMB->sad8[1] = pMB->sad8[2] = pMB->sad8[3] = sad;
718 : Isibaar 3 }
719 :    
720 : syskin 628 bool
721 : chl 530 MotionEstimation(MBParam * const pParam,
722 :     FRAMEINFO * const current,
723 :     FRAMEINFO * const reference,
724 :     const IMAGE * const pRefH,
725 :     const IMAGE * const pRefV,
726 :     const IMAGE * const pRefHV,
727 :     const uint32_t iLimit)
728 : Isibaar 3 {
729 : chl 530 MACROBLOCK *const pMBs = current->mbs;
730 :     const IMAGE *const pCurrent = &current->image;
731 :     const IMAGE *const pRef = &reference->image;
732 : Isibaar 3
733 : syskin 704 uint32_t mb_width = pParam->mb_width;
734 :     uint32_t mb_height = pParam->mb_height;
735 : syskin 768 const uint32_t iEdgedWidth = pParam->edged_width;
736 : suxen_drol 702
737 : chl 530 uint32_t x, y;
738 :     uint32_t iIntra = 0;
739 : syskin 628 int32_t InterBias, quant = current->quant, sad00;
740 : edgomez 195
741 : Isibaar 539 // some pre-initialized thingies for SearchP
742 : syskin 712 int32_t temp[8];
743 : Isibaar 539 VECTOR currentMV[5];
744 : Isibaar 580 VECTOR currentQMV[5];
745 : Isibaar 539 int32_t iMinSAD[5];
746 :     SearchData Data;
747 : syskin 704 memset(&Data, 0, sizeof(SearchData));
748 : syskin 768 Data.iEdgedWidth = iEdgedWidth;
749 : Isibaar 539 Data.currentMV = currentMV;
750 : Isibaar 580 Data.currentQMV = currentQMV;
751 : Isibaar 539 Data.iMinSAD = iMinSAD;
752 :     Data.temp = temp;
753 :     Data.iFcode = current->fcode;
754 : Isibaar 580 Data.rounding = pParam->m_rounding_type;
755 : syskin 628 Data.qpel = pParam->m_quarterpel;
756 : chl 769 Data.chroma = current->global_flags & ( PMV_CHROMA16 | PMV_CHROMA8 );
757 : syskin 704 Data.rrv = current->global_flags & XVID_REDUCED;
758 : Isibaar 539
759 : syskin 704 if ((current->global_flags & XVID_REDUCED)) {
760 : suxen_drol 702 mb_width = (pParam->width + 31) / 32;
761 :     mb_height = (pParam->height + 31) / 32;
762 : syskin 704 Data.qpel = Data.chroma = 0;
763 : suxen_drol 702 }
764 :    
765 : syskin 754 Data.RefQ = pRefV->u; // a good place, also used in MC (for similar purpose)
766 : chl 530 if (sadInit) (*sadInit) ();
767 : edgomez 195
768 : suxen_drol 702 for (y = 0; y < mb_height; y++) {
769 :     for (x = 0; x < mb_width; x++) {
770 : chl 530 MACROBLOCK *pMB = &pMBs[x + y * pParam->mb_width];
771 : syskin 768
772 :     if (!Data.rrv) pMB->sad16 =
773 :     sad16v(pCurrent->y + (x + y * iEdgedWidth) * 16,
774 :     pRef->y + (x + y * iEdgedWidth) * 16,
775 : syskin 704 pParam->edged_width, pMB->sad8 );
776 : syskin 768
777 : syskin 748 else pMB->sad16 =
778 : syskin 768 sad32v_c(pCurrent->y + (x + y * iEdgedWidth) * 32,
779 :     pRef->y + (x + y * iEdgedWidth) * 32,
780 : chl 530 pParam->edged_width, pMB->sad8 );
781 : edgomez 195
782 : syskin 628 if (Data.chroma) {
783 : syskin 768 Data.temp[7] = sad8(pCurrent->u + x*8 + y*(iEdgedWidth/2)*8,
784 :     pRef->u + x*8 + y*(iEdgedWidth/2)*8, iEdgedWidth/2)
785 :     + sad8(pCurrent->v + (x + y*(iEdgedWidth/2))*8,
786 :     pRef->v + (x + y*(iEdgedWidth/2))*8, iEdgedWidth/2);
787 :     pMB->sad16 += Data.temp[7];
788 : syskin 628 }
789 :    
790 : syskin 768 sad00 = pMB->sad16;
791 : syskin 628
792 : chl 530 if (!(current->global_flags & XVID_LUMIMASKING)) {
793 :     pMB->dquant = NO_CHANGE;
794 : syskin 601 } else {
795 : syskin 574 if (pMB->dquant != NO_CHANGE) {
796 :     quant += DQtab[pMB->dquant];
797 :     if (quant > 31) quant = 31;
798 :     else if (quant < 1) quant = 1;
799 :     }
800 : syskin 601 }
801 : syskin 768 pMB->quant = current->quant;
802 : chl 181
803 : syskin 628 //initial skip decision
804 : chl 769 /* no early skip for GMC (global vector = skip vector is unknown!) */
805 :     if (!(current->global_flags & XVID_GMC)) { /* no fast SKIP for S(GMC)-VOPs */
806 :     if (pMB->dquant == NO_CHANGE && sad00 < pMB->quant * INITIAL_SKIP_THRESH * (Data.rrv ? 4:1) )
807 : syskin 768 if (Data.chroma || SkipDecisionP(pCurrent, pRef, x, y, iEdgedWidth/2, pMB->quant, Data.rrv)) {
808 : chl 619 SkipMacroblockP(pMB, sad00);
809 :     continue;
810 :     }
811 :     }
812 : syskin 768
813 : syskin 628 SearchP(pRef, pRefH->y, pRefV->y, pRefHV->y, pCurrent, x,
814 : chl 530 y, current->motion_flags, pMB->quant,
815 : Isibaar 539 &Data, pParam, pMBs, reference->mbs,
816 : chl 530 current->global_flags & XVID_INTER4V, pMB);
817 : edgomez 195
818 : chl 530 /* final skip decision, a.k.a. "the vector you found, really that good?" */
819 : chl 769 if (!(current->global_flags & XVID_GMC)) {
820 : chl 619 if ( (pMB->dquant == NO_CHANGE) && (sad00 < pMB->quant * MAX_SAD00_FOR_SKIP)
821 : syskin 704 && ((100*pMB->sad16)/(sad00+1) > FINAL_SKIP_THRESH * (Data.rrv ? 4:1)) )
822 : syskin 768 if (Data.chroma || SkipDecisionP(pCurrent, pRef, x, y, iEdgedWidth/2, pMB->quant, Data.rrv)) {
823 : chl 619 SkipMacroblockP(pMB, sad00);
824 :     continue;
825 :     }
826 :     }
827 : syskin 768
828 : chl 530 /* finally, intra decision */
829 : Isibaar 3
830 : chl 530 InterBias = MV16_INTER_BIAS;
831 : syskin 768 if (pMB->quant > 8) InterBias += 100 * (pMB->quant - 8); // to make high quants work
832 : chl 530 if (y != 0)
833 : syskin 639 if ((pMB - pParam->mb_width)->mode == MODE_INTRA ) InterBias -= 80;
834 : chl 530 if (x != 0)
835 : syskin 639 if ((pMB - 1)->mode == MODE_INTRA ) InterBias -= 80;
836 : syskin 768
837 : syskin 628 if (Data.chroma) InterBias += 50; // to compensate bigger SAD
838 : syskin 768 if (Data.rrv) InterBias *= 4;
839 : Isibaar 3
840 : syskin 768 if (InterBias < pMB->sad16) {
841 : syskin 704 int32_t deviation;
842 : syskin 768 if (!Data.rrv)
843 :     deviation = dev16(pCurrent->y + (x + y * iEdgedWidth) * 16, iEdgedWidth);
844 :     else {
845 :     deviation = dev16(pCurrent->y + (x + y * iEdgedWidth) * 32, iEdgedWidth)
846 :     + dev16(pCurrent->y + (x + y * iEdgedWidth) * 32 + 16, iEdgedWidth)
847 :     + dev16(pCurrent->y + (x + y * iEdgedWidth) * 32 + 16 * iEdgedWidth, iEdgedWidth)
848 :     + dev16(pCurrent->y + (x + y * iEdgedWidth) * 32 + 16 * (iEdgedWidth+1), iEdgedWidth);
849 :     }
850 :     if (deviation < (pMB->sad16 - InterBias)) {
851 : syskin 754 if (++iIntra >= iLimit) return 1;
852 : syskin 768 SkipMacroblockP(pMB, 0); //same thing
853 : chl 530 pMB->mode = MODE_INTRA;
854 :     }
855 :     }
856 :     }
857 : Isibaar 3 }
858 : chl 619
859 : chl 769 if (current->global_flags & XVID_GMC ) /* first GMC step only for S(GMC)-VOPs */
860 :     {
861 :     current->warp = GlobalMotionEst( pMBs, pParam, current, reference, pRefH, pRefV, pRefHV);
862 :     }
863 :    
864 : syskin 628 return 0;
865 : chl 530 }
866 : Isibaar 3
867 : edgomez 195
868 : chl 530 static __inline int
869 :     make_mask(const VECTOR * const pmv, const int i)
870 :     {
871 : Isibaar 539 int mask = 255, j;
872 : chl 530 for (j = 0; j < i; j++) {
873 :     if (MVequal(pmv[i], pmv[j])) return 0; // same vector has been checked already
874 :     if (pmv[i].x == pmv[j].x) {
875 : syskin 768 if (pmv[i].y == pmv[j].y + iDiamondSize) mask &= ~4;
876 :     else if (pmv[i].y == pmv[j].y - iDiamondSize) mask &= ~8;
877 : syskin 748 } else
878 : chl 530 if (pmv[i].y == pmv[j].y) {
879 : syskin 768 if (pmv[i].x == pmv[j].x + iDiamondSize) mask &= ~1;
880 :     else if (pmv[i].x == pmv[j].x - iDiamondSize) mask &= ~2;
881 : chl 530 }
882 : Isibaar 3 }
883 : chl 530 return mask;
884 :     }
885 : edgomez 195
886 : syskin 748 static __inline void
887 : syskin 704 PreparePredictionsP(VECTOR * const pmv, int x, int y, int iWcount,
888 :     int iHcount, const MACROBLOCK * const prevMB, int rrv)
889 : chl 530 {
890 : edgomez 195
891 : chl 530 //this function depends on get_pmvdata which means that it sucks. It should get the predictions by itself
892 : syskin 704 if (rrv) { iWcount /= 2; iHcount /= 2; }
893 : edgomez 195
894 : syskin 704 if ( (y != 0) && (x < (iWcount-1)) ) { // [5] top-right neighbour
895 : chl 530 pmv[5].x = EVEN(pmv[3].x);
896 : syskin 748 pmv[5].y = EVEN(pmv[3].y);
897 : Isibaar 539 } else pmv[5].x = pmv[5].y = 0;
898 : chl 169
899 : chl 530 if (x != 0) { pmv[3].x = EVEN(pmv[1].x); pmv[3].y = EVEN(pmv[1].y); }// pmv[3] is left neighbour
900 :     else pmv[3].x = pmv[3].y = 0;
901 : Isibaar 3
902 : chl 530 if (y != 0) { pmv[4].x = EVEN(pmv[2].x); pmv[4].y = EVEN(pmv[2].y); }// [4] top neighbour
903 : syskin 768 else pmv[4].x = pmv[4].y = 0;
904 : chl 169
905 : chl 530 // [1] median prediction
906 : syskin 767 pmv[1].x = EVEN(pmv[0].x); pmv[1].y = EVEN(pmv[0].y);
907 : chl 169
908 : chl 530 pmv[0].x = pmv[0].y = 0; // [0] is zero; not used in the loop (checked before) but needed here for make_mask
909 : chl 169
910 : chl 530 pmv[2].x = EVEN(prevMB->mvs[0].x); // [2] is last frame
911 :     pmv[2].y = EVEN(prevMB->mvs[0].y);
912 : chl 169
913 : syskin 704 if ((x < iWcount-1) && (y < iHcount-1)) {
914 : chl 530 pmv[6].x = EVEN((prevMB+1+iWcount)->mvs[0].x); //[6] right-down neighbour in last frame
915 : syskin 748 pmv[6].y = EVEN((prevMB+1+iWcount)->mvs[0].y);
916 : Isibaar 539 } else pmv[6].x = pmv[6].y = 0;
917 : syskin 704
918 :     if (rrv) {
919 :     int i;
920 :     for (i = 0; i < 7; i++) {
921 : syskin 768 pmv[i].x = RRV_MV_SCALEUP(pmv[i].x);
922 : syskin 767 pmv[i].y = RRV_MV_SCALEUP(pmv[i].y);
923 : syskin 704 }
924 :     }
925 : chl 530 }
926 : chl 169
927 : chl 530 static void
928 : syskin 628 SearchP(const IMAGE * const pRef,
929 : chl 530 const uint8_t * const pRefH,
930 :     const uint8_t * const pRefV,
931 :     const uint8_t * const pRefHV,
932 :     const IMAGE * const pCur,
933 :     const int x,
934 :     const int y,
935 :     const uint32_t MotionFlags,
936 :     const uint32_t iQuant,
937 : Isibaar 539 SearchData * const Data,
938 : chl 530 const MBParam * const pParam,
939 :     const MACROBLOCK * const pMBs,
940 :     const MACROBLOCK * const prevMBs,
941 :     int inter4v,
942 :     MACROBLOCK * const pMB)
943 :     {
944 : chl 169
945 : chl 530 int i, iDirection = 255, mask, threshA;
946 : Isibaar 539 VECTOR pmv[7];
947 : Isibaar 3
948 : syskin 712 get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
949 :     pParam->width, pParam->height, Data->iFcode - Data->qpel, 0, Data->rrv);
950 : Isibaar 3
951 : syskin 768 get_pmvdata2(pMBs, pParam->mb_width, 0, x, y, 0, pmv, Data->temp);
952 : syskin 628
953 : syskin 768 Data->temp[5] = Data->temp[6] = 0; // chroma-sad cache
954 :     i = Data->rrv ? 2 : 1;
955 : syskin 704 Data->Cur = pCur->y + (x + y * Data->iEdgedWidth) * 16*i;
956 :     Data->CurV = pCur->v + (x + y * (Data->iEdgedWidth/2)) * 8*i;
957 :     Data->CurU = pCur->u + (x + y * (Data->iEdgedWidth/2)) * 8*i;
958 : Isibaar 3
959 : syskin 704 Data->Ref = pRef->y + (x + Data->iEdgedWidth*y) * 16*i;
960 :     Data->RefH = pRefH + (x + Data->iEdgedWidth*y) * 16*i;
961 :     Data->RefV = pRefV + (x + Data->iEdgedWidth*y) * 16*i;
962 :     Data->RefHV = pRefHV + (x + Data->iEdgedWidth*y) * 16*i;
963 :     Data->RefCV = pRef->v + (x + y * (Data->iEdgedWidth/2)) * 8*i;
964 :     Data->RefCU = pRef->u + (x + y * (Data->iEdgedWidth/2)) * 8*i;
965 :    
966 : syskin 601 Data->lambda16 = lambda_vec16[iQuant];
967 : Isibaar 606 Data->lambda8 = lambda_vec8[iQuant];
968 : syskin 663 Data->qpel_precision = 0;
969 : chl 169
970 : edgomez 568 if (pMB->dquant != NO_CHANGE) inter4v = 0;
971 : edgomez 195
972 : syskin 768 for(i = 0; i < 5; i++)
973 : Isibaar 580 Data->currentMV[i].x = Data->currentMV[i].y = 0;
974 : Isibaar 539
975 : syskin 768 if (Data->qpel) Data->predMV = get_qpmv2(pMBs, pParam->mb_width, 0, x, y, 0);
976 : syskin 663 else Data->predMV = pmv[0];
977 : Isibaar 606
978 : syskin 724 i = d_mv_bits(0, 0, Data->predMV, Data->iFcode, 0, 0);
979 : syskin 768 Data->iMinSAD[0] = pMB->sad16 + ((Data->lambda16 * i * pMB->sad16)>>10);
980 :     Data->iMinSAD[1] = pMB->sad8[0] + ((Data->lambda8 * i * (pMB->sad8[0]+NEIGH_8X8_BIAS)) >> 10);
981 : Isibaar 539 Data->iMinSAD[2] = pMB->sad8[1];
982 :     Data->iMinSAD[3] = pMB->sad8[2];
983 :     Data->iMinSAD[4] = pMB->sad8[3];
984 :    
985 : syskin 768 if (x | y) {
986 : edgomez 568 threshA = Data->temp[0]; // that's when we keep this SAD atm
987 : chl 530 if (threshA < 512) threshA = 512;
988 : syskin 768 else if (threshA > 1024) threshA = 1024;
989 :     } else threshA = 512;
990 : Isibaar 3
991 : chl 530 PreparePredictionsP(pmv, x, y, pParam->mb_width, pParam->mb_height,
992 : syskin 704 prevMBs + x + y * pParam->mb_width, Data->rrv);
993 : edgomez 195
994 : syskin 768 if (!Data->rrv) {
995 :     if (inter4v | Data->chroma) CheckCandidate = CheckCandidate16;
996 :     else CheckCandidate = CheckCandidate16no4v; //for extra speed
997 :     } else CheckCandidate = CheckCandidate32;
998 : edgomez 568
999 : syskin 768 /* main loop. checking all predictions (but first, which is 0,0 and has been checked in MotionEstimation())*/
1000 : chl 530
1001 :     for (i = 1; i < 7; i++) {
1002 :     if (!(mask = make_mask(pmv, i)) ) continue;
1003 : edgomez 568 (*CheckCandidate)(pmv[i].x, pmv[i].y, mask, &iDirection, Data);
1004 : Isibaar 539 if (Data->iMinSAD[0] <= threshA) break;
1005 : chl 530 }
1006 :    
1007 : Isibaar 539 if ((Data->iMinSAD[0] <= threshA) ||
1008 :     (MVequal(Data->currentMV[0], (prevMBs+x+y*pParam->mb_width)->mvs[0]) &&
1009 : syskin 768 (Data->iMinSAD[0] < (prevMBs+x+y*pParam->mb_width)->sad16)))
1010 : chl 530 inter4v = 0;
1011 : syskin 768 else {
1012 : Isibaar 3
1013 : syskin 748 MainSearchFunc * MainSearchPtr;
1014 : Isibaar 539 if (MotionFlags & PMV_USESQUARES16) MainSearchPtr = SquareSearch;
1015 :     else if (MotionFlags & PMV_ADVANCEDDIAMOND16) MainSearchPtr = AdvDiamondSearch;
1016 :     else MainSearchPtr = DiamondSearch;
1017 : chl 181
1018 : Isibaar 539 (*MainSearchPtr)(Data->currentMV->x, Data->currentMV->y, Data, iDirection);
1019 : Isibaar 3
1020 : chl 530 /* extended search, diamond starting in 0,0 and in prediction.
1021 :     note that this search is/might be done in halfpel positions,
1022 :     which makes it more different than the diamond above */
1023 : chl 259
1024 : Isibaar 539 if (MotionFlags & PMV_EXTSEARCH16) {
1025 :     int32_t bSAD;
1026 :     VECTOR startMV = Data->predMV, backupMV = Data->currentMV[0];
1027 : syskin 704 if (Data->rrv) {
1028 :     startMV.x = RRV_MV_SCALEUP(startMV.x);
1029 :     startMV.y = RRV_MV_SCALEUP(startMV.y);
1030 : syskin 748 } else
1031 : syskin 704 if (!(MotionFlags & PMV_HALFPELREFINE16)) // who's gonna use extsearch and no halfpel?
1032 :     startMV.x = EVEN(startMV.x); startMV.y = EVEN(startMV.y);
1033 : Isibaar 539 if (!(MVequal(startMV, backupMV))) {
1034 :     bSAD = Data->iMinSAD[0]; Data->iMinSAD[0] = MV_MAX_ERROR;
1035 : Isibaar 3
1036 : Isibaar 606 (*CheckCandidate)(startMV.x, startMV.y, 255, &iDirection, Data);
1037 : Isibaar 539 (*MainSearchPtr)(startMV.x, startMV.y, Data, 255);
1038 :     if (bSAD < Data->iMinSAD[0]) {
1039 :     Data->currentMV[0] = backupMV;
1040 :     Data->iMinSAD[0] = bSAD; }
1041 :     }
1042 : Isibaar 3
1043 : Isibaar 539 backupMV = Data->currentMV[0];
1044 : syskin 768 if (MotionFlags & PMV_HALFPELREFINE16 && !Data->rrv) startMV.x = startMV.y = 1;
1045 :     else startMV.x = startMV.y = 0;
1046 : Isibaar 539 if (!(MVequal(startMV, backupMV))) {
1047 :     bSAD = Data->iMinSAD[0]; Data->iMinSAD[0] = MV_MAX_ERROR;
1048 : edgomez 195
1049 : Isibaar 606 (*CheckCandidate)(startMV.x, startMV.y, 255, &iDirection, Data);
1050 : Isibaar 539 (*MainSearchPtr)(startMV.x, startMV.y, Data, 255);
1051 :     if (bSAD < Data->iMinSAD[0]) {
1052 :     Data->currentMV[0] = backupMV;
1053 :     Data->iMinSAD[0] = bSAD; }
1054 :     }
1055 : Isibaar 3 }
1056 :     }
1057 :    
1058 : syskin 663 if (MotionFlags & PMV_HALFPELREFINE16) SubpelRefine(Data);
1059 : Isibaar 3
1060 : Isibaar 580 for(i = 0; i < 5; i++) {
1061 :     Data->currentQMV[i].x = 2 * Data->currentMV[i].x; // initialize qpel vectors
1062 :     Data->currentQMV[i].y = 2 * Data->currentMV[i].y;
1063 :     }
1064 :    
1065 : syskin 768 if (Data->qpel && MotionFlags & PMV_QUARTERPELREFINE16) {
1066 : syskin 663 Data->qpel_precision = 1;
1067 : syskin 712 get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
1068 :     pParam->width, pParam->height, Data->iFcode, 1, 0);
1069 : syskin 601
1070 : syskin 663 SubpelRefine(Data);
1071 : Isibaar 580 }
1072 :    
1073 : syskin 768 if (Data->iMinSAD[0] < (int32_t)iQuant * 30) inter4v = 0;
1074 : Isibaar 539 if (inter4v) {
1075 :     SearchData Data8;
1076 : syskin 768 memcpy(&Data8, Data, sizeof(SearchData)); //quick copy of common data
1077 :    
1078 : Isibaar 539 Search8(Data, 2*x, 2*y, MotionFlags, pParam, pMB, pMBs, 0, &Data8);
1079 :     Search8(Data, 2*x + 1, 2*y, MotionFlags, pParam, pMB, pMBs, 1, &Data8);
1080 :     Search8(Data, 2*x, 2*y + 1, MotionFlags, pParam, pMB, pMBs, 2, &Data8);
1081 :     Search8(Data, 2*x + 1, 2*y + 1, MotionFlags, pParam, pMB, pMBs, 3, &Data8);
1082 : syskin 768
1083 : syskin 628 if (Data->chroma) {
1084 : syskin 768 int sumx = 0, sumy = 0;
1085 :     const int div = 1 + Data->qpel;
1086 :     const VECTOR * const mv = Data->qpel ? pMB->qmvs : pMB->mvs;
1087 : syskin 628
1088 : syskin 768 for (i = 0; i < 4; i++) {
1089 :     sumx += mv[i].x / div;
1090 :     sumy += mv[i].y / div;
1091 : syskin 663 }
1092 : syskin 768
1093 : syskin 753 Data->iMinSAD[1] += ChromaSAD( (sumx >> 3) + roundtab_76[sumx & 0xf],
1094 :     (sumy >> 3) + roundtab_76[sumy & 0xf], Data);
1095 : syskin 628 }
1096 : Isibaar 539 }
1097 : Isibaar 3
1098 : syskin 704 if (Data->rrv) {
1099 :     Data->currentMV[0].x = RRV_MV_SCALEDOWN(Data->currentMV[0].x);
1100 :     Data->currentMV[0].y = RRV_MV_SCALEDOWN(Data->currentMV[0].y);
1101 :     }
1102 : syskin 740
1103 : chl 530 if (!(inter4v) ||
1104 : syskin 748 (Data->iMinSAD[0] < Data->iMinSAD[1] + Data->iMinSAD[2] +
1105 : Isibaar 539 Data->iMinSAD[3] + Data->iMinSAD[4] + IMV16X16 * (int32_t)iQuant )) {
1106 : chl 530 // INTER MODE
1107 :     pMB->mode = MODE_INTER;
1108 : syskin 768 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = Data->currentMV[0];
1109 :     pMB->sad16 = pMB->sad8[0] = pMB->sad8[1] = pMB->sad8[2] = pMB->sad8[3] = Data->iMinSAD[0];
1110 : Isibaar 3
1111 : syskin 768 if(Data->qpel) {
1112 : syskin 663 pMB->qmvs[0] = pMB->qmvs[1]
1113 :     = pMB->qmvs[2] = pMB->qmvs[3] = Data->currentQMV[0];
1114 :     pMB->pmvs[0].x = Data->currentQMV[0].x - Data->predMV.x;
1115 :     pMB->pmvs[0].y = Data->currentQMV[0].y - Data->predMV.y;
1116 : syskin 628 } else {
1117 : Isibaar 580 pMB->pmvs[0].x = Data->currentMV[0].x - Data->predMV.x;
1118 :     pMB->pmvs[0].y = Data->currentMV[0].y - Data->predMV.y;
1119 :     }
1120 : edgomez 195 } else {
1121 : syskin 748 // INTER4V MODE; all other things are already set in Search8
1122 : chl 530 pMB->mode = MODE_INTER4V;
1123 : syskin 748 pMB->sad16 = Data->iMinSAD[1] + Data->iMinSAD[2] +
1124 : Isibaar 539 Data->iMinSAD[3] + Data->iMinSAD[4] + IMV16X16 * iQuant;
1125 : edgomez 78 }
1126 : Isibaar 3 }
1127 :    
1128 : chl 530 static void
1129 :     Search8(const SearchData * const OldData,
1130 :     const int x, const int y,
1131 :     const uint32_t MotionFlags,
1132 :     const MBParam * const pParam,
1133 :     MACROBLOCK * const pMB,
1134 :     const MACROBLOCK * const pMBs,
1135 : Isibaar 539 const int block,
1136 :     SearchData * const Data)
1137 : chl 345 {
1138 : syskin 704 int i = 0;
1139 : Isibaar 539 Data->iMinSAD = OldData->iMinSAD + 1 + block;
1140 :     Data->currentMV = OldData->currentMV + 1 + block;
1141 : Isibaar 580 Data->currentQMV = OldData->currentQMV + 1 + block;
1142 : chl 345
1143 : syskin 768 if(Data->qpel) {
1144 : syskin 704 Data->predMV = get_qpmv2(pMBs, pParam->mb_width, 0, x/2, y/2, block);
1145 : syskin 724 if (block != 0) i = d_mv_bits( Data->currentQMV->x, Data->currentQMV->y,
1146 :     Data->predMV, Data->iFcode, 0, 0);
1147 : Isibaar 606 } else {
1148 : syskin 704 Data->predMV = get_pmv2(pMBs, pParam->mb_width, 0, x/2, y/2, block);
1149 : syskin 768 if (block != 0) i = d_mv_bits( Data->currentMV->x, Data->currentMV->y,
1150 :     Data->predMV, Data->iFcode, 0, Data->rrv);
1151 : Isibaar 606 }
1152 : chl 345
1153 : syskin 768 *(Data->iMinSAD) += (Data->lambda8 * i * (*Data->iMinSAD + NEIGH_8X8_BIAS))>>10;
1154 : syskin 704
1155 : syskin 768 if (MotionFlags & (PMV_EXTSEARCH8|PMV_HALFPELREFINE8|PMV_QUARTERPELREFINE8)) {
1156 : syskin 704 if (Data->rrv) i = 2; else i = 1;
1157 : chl 345
1158 : syskin 768 Data->Ref = OldData->Ref + i * 8 * ((block&1) + Data->iEdgedWidth*(block>>1));
1159 :     Data->RefH = OldData->RefH + i * 8 * ((block&1) + Data->iEdgedWidth*(block>>1));
1160 :     Data->RefV = OldData->RefV + i * 8 * ((block&1) + Data->iEdgedWidth*(block>>1));
1161 :     Data->RefHV = OldData->RefHV + i * 8 * ((block&1) + Data->iEdgedWidth*(block>>1));
1162 : chl 345
1163 : syskin 768 Data->Cur = OldData->Cur + i * 8 * ((block&1) + Data->iEdgedWidth*(block>>1));
1164 : syskin 663 Data->qpel_precision = 0;
1165 : chl 345
1166 : syskin 712 get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 8,
1167 : syskin 768 pParam->width, pParam->height, Data->iFcode - Data->qpel, 0, Data->rrv);
1168 : syskin 712
1169 : syskin 768 if (!Data->rrv) CheckCandidate = CheckCandidate8;
1170 :     else CheckCandidate = CheckCandidate16no4v;
1171 : syskin 712
1172 : chl 530 if (MotionFlags & PMV_EXTSEARCH8) {
1173 : Isibaar 580 int32_t temp_sad = *(Data->iMinSAD); // store current MinSAD
1174 : syskin 768
1175 : chl 530 MainSearchFunc *MainSearchPtr;
1176 :     if (MotionFlags & PMV_USESQUARES8) MainSearchPtr = SquareSearch;
1177 :     else if (MotionFlags & PMV_ADVANCEDDIAMOND8) MainSearchPtr = AdvDiamondSearch;
1178 :     else MainSearchPtr = DiamondSearch;
1179 : chl 345
1180 : Isibaar 580 (*MainSearchPtr)(Data->currentMV->x, Data->currentMV->y, Data, 255);
1181 : chl 345
1182 : syskin 601 if(*(Data->iMinSAD) < temp_sad) {
1183 : Isibaar 580 Data->currentQMV->x = 2 * Data->currentMV->x; // update our qpel vector
1184 :     Data->currentQMV->y = 2 * Data->currentMV->y;
1185 :     }
1186 :     }
1187 :    
1188 :     if (MotionFlags & PMV_HALFPELREFINE8) {
1189 :     int32_t temp_sad = *(Data->iMinSAD); // store current MinSAD
1190 :    
1191 : syskin 663 SubpelRefine(Data); // perform halfpel refine of current best vector
1192 : Isibaar 580
1193 :     if(*(Data->iMinSAD) < temp_sad) { // we have found a better match
1194 :     Data->currentQMV->x = 2 * Data->currentMV->x; // update our qpel vector
1195 :     Data->currentQMV->y = 2 * Data->currentMV->y;
1196 :     }
1197 :     }
1198 :    
1199 : syskin 768 if (Data->qpel && MotionFlags & PMV_QUARTERPELREFINE8) {
1200 :     Data->qpel_precision = 1;
1201 :     get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 8,
1202 :     pParam->width, pParam->height, Data->iFcode, 1, 0);
1203 :     SubpelRefine(Data);
1204 : Isibaar 580 }
1205 : chl 345 }
1206 : chl 530
1207 : syskin 704 if (Data->rrv) {
1208 :     Data->currentMV->x = RRV_MV_SCALEDOWN(Data->currentMV->x);
1209 :     Data->currentMV->y = RRV_MV_SCALEDOWN(Data->currentMV->y);
1210 :     }
1211 : syskin 768
1212 : syskin 712 if(Data->qpel) {
1213 : syskin 663 pMB->pmvs[block].x = Data->currentQMV->x - Data->predMV.x;
1214 :     pMB->pmvs[block].y = Data->currentQMV->y - Data->predMV.y;
1215 : syskin 768 pMB->qmvs[block] = *Data->currentQMV;
1216 : syskin 704 } else {
1217 : Isibaar 580 pMB->pmvs[block].x = Data->currentMV->x - Data->predMV.x;
1218 :     pMB->pmvs[block].y = Data->currentMV->y - Data->predMV.y;
1219 :     }
1220 :    
1221 : syskin 768 pMB->mvs[block] = *Data->currentMV;
1222 :     pMB->sad8[block] = 4 * *Data->iMinSAD;
1223 : chl 345 }
1224 :    
1225 : syskin 768 /* motion estimation for B-frames */
1226 : chl 345
1227 : chl 530 static __inline VECTOR
1228 :     ChoosePred(const MACROBLOCK * const pMB, const uint32_t mode)
1229 : Isibaar 3 {
1230 : chl 530 /* the stupidiest function ever */
1231 : syskin 768 return (mode == MODE_FORWARD ? pMB->mvs[0] : pMB->b_mvs[0]);
1232 : Isibaar 3 }
1233 :    
1234 : chl 530 static void __inline
1235 :     PreparePredictionsBF(VECTOR * const pmv, const int x, const int y,
1236 :     const uint32_t iWcount,
1237 :     const MACROBLOCK * const pMB,
1238 :     const uint32_t mode_curr)
1239 : Isibaar 3 {
1240 :    
1241 : chl 530 // [0] is prediction
1242 :     pmv[0].x = EVEN(pmv[0].x); pmv[0].y = EVEN(pmv[0].y);
1243 : Isibaar 3
1244 : chl 530 pmv[1].x = pmv[1].y = 0; // [1] is zero
1245 : Isibaar 3
1246 : chl 530 pmv[2] = ChoosePred(pMB, mode_curr);
1247 :     pmv[2].x = EVEN(pmv[2].x); pmv[2].y = EVEN(pmv[2].y);
1248 : edgomez 195
1249 : chl 530 if ((y != 0)&&(x != (int)(iWcount+1))) { // [3] top-right neighbour
1250 :     pmv[3] = ChoosePred(pMB+1-iWcount, mode_curr);
1251 : syskin 748 pmv[3].x = EVEN(pmv[3].x); pmv[3].y = EVEN(pmv[3].y);
1252 : Isibaar 539 } else pmv[3].x = pmv[3].y = 0;
1253 : Isibaar 3
1254 : chl 530 if (y != 0) {
1255 :     pmv[4] = ChoosePred(pMB-iWcount, mode_curr);
1256 :     pmv[4].x = EVEN(pmv[4].x); pmv[4].y = EVEN(pmv[4].y);
1257 :     } else pmv[4].x = pmv[4].y = 0;
1258 : Isibaar 3
1259 : chl 530 if (x != 0) {
1260 :     pmv[5] = ChoosePred(pMB-1, mode_curr);
1261 :     pmv[5].x = EVEN(pmv[5].x); pmv[5].y = EVEN(pmv[5].y);
1262 :     } else pmv[5].x = pmv[5].y = 0;
1263 : Isibaar 3
1264 : syskin 768 if (x != 0 && y != 0) {
1265 : chl 530 pmv[6] = ChoosePred(pMB-1-iWcount, mode_curr);
1266 : syskin 767 pmv[6].x = EVEN(pmv[6].x); pmv[6].y = EVEN(pmv[6].y);
1267 : chl 530 } else pmv[6].x = pmv[6].y = 0;
1268 :     }
1269 : chl 181
1270 : edgomez 170
1271 : syskin 768 /* search backward or forward */
1272 : chl 530 static void
1273 :     SearchBF( const uint8_t * const pRef,
1274 :     const uint8_t * const pRefH,
1275 :     const uint8_t * const pRefV,
1276 :     const uint8_t * const pRefHV,
1277 :     const IMAGE * const pCur,
1278 :     const int x, const int y,
1279 :     const uint32_t MotionFlags,
1280 :     const uint32_t iFcode,
1281 :     const MBParam * const pParam,
1282 :     MACROBLOCK * const pMB,
1283 :     const VECTOR * const predMV,
1284 :     int32_t * const best_sad,
1285 : h 545 const int32_t mode_current,
1286 :     SearchData * const Data)
1287 : chl 530 {
1288 : Isibaar 3
1289 : syskin 740 int i, iDirection = 255, mask;
1290 : h 545 VECTOR pmv[7];
1291 : chl 530 MainSearchFunc *MainSearchPtr;
1292 : h 545 *Data->iMinSAD = MV_MAX_ERROR;
1293 :     Data->iFcode = iFcode;
1294 : syskin 663 Data->qpel_precision = 0;
1295 : Isibaar 3
1296 : syskin 768 Data->Ref = pRef + (x + y * Data->iEdgedWidth) * 16;
1297 :     Data->RefH = pRefH + (x + y * Data->iEdgedWidth) * 16;
1298 :     Data->RefV = pRefV + (x + y * Data->iEdgedWidth) * 16;
1299 :     Data->RefHV = pRefHV + (x + y * Data->iEdgedWidth) * 16;
1300 : Isibaar 3
1301 : h 545 Data->predMV = *predMV;
1302 : edgomez 195
1303 : h 545 get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
1304 : syskin 712 pParam->width, pParam->height, iFcode - Data->qpel, 0, 0);
1305 : Isibaar 3
1306 : h 545 pmv[0] = Data->predMV;
1307 : syskin 658 if (Data->qpel) { pmv[0].x /= 2; pmv[0].y /= 2; }
1308 : syskin 768
1309 : h 545 PreparePredictionsBF(pmv, x, y, pParam->mb_width, pMB, mode_current);
1310 : edgomez 195
1311 : h 545 Data->currentMV->x = Data->currentMV->y = 0;
1312 : chl 530 CheckCandidate = CheckCandidate16no4v;
1313 : chl 181
1314 : chl 530 // main loop. checking all predictions
1315 : syskin 740 for (i = 0; i < 7; i++) {
1316 : chl 530 if (!(mask = make_mask(pmv, i)) ) continue;
1317 : h 545 CheckCandidate16no4v(pmv[i].x, pmv[i].y, mask, &iDirection, Data);
1318 : edgomez 78 }
1319 : Isibaar 3
1320 : syskin 768 if (MotionFlags & PMV_USESQUARES16) MainSearchPtr = SquareSearch;
1321 :     else if (MotionFlags & PMV_ADVANCEDDIAMOND16) MainSearchPtr = AdvDiamondSearch;
1322 : chl 530 else MainSearchPtr = DiamondSearch;
1323 : chl 96
1324 : syskin 740 (*MainSearchPtr)(Data->currentMV->x, Data->currentMV->y, Data, iDirection);
1325 : chl 169
1326 : syskin 663 SubpelRefine(Data);
1327 : syskin 768
1328 : syskin 740 if (Data->qpel && *Data->iMinSAD < *best_sad + 300) {
1329 : syskin 658 Data->currentQMV->x = 2*Data->currentMV->x;
1330 :     Data->currentQMV->y = 2*Data->currentMV->y;
1331 : syskin 663 Data->qpel_precision = 1;
1332 : syskin 712 get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
1333 :     pParam->width, pParam->height, iFcode, 1, 0);
1334 : syskin 663 SubpelRefine(Data);
1335 : syskin 658 }
1336 : chl 169
1337 : chl 530 // three bits are needed to code backward mode. four for forward
1338 : syskin 740
1339 : syskin 768 if (mode_current == MODE_FORWARD) *Data->iMinSAD += 4 * Data->lambda16;
1340 :     else *Data->iMinSAD += 3 * Data->lambda16;
1341 : chl 169
1342 : h 545 if (*Data->iMinSAD < *best_sad) {
1343 :     *best_sad = *Data->iMinSAD;
1344 : chl 530 pMB->mode = mode_current;
1345 : syskin 658 if (Data->qpel) {
1346 :     pMB->pmvs[0].x = Data->currentQMV->x - predMV->x;
1347 :     pMB->pmvs[0].y = Data->currentQMV->y - predMV->y;
1348 : syskin 748 if (mode_current == MODE_FORWARD)
1349 : syskin 658 pMB->qmvs[0] = *Data->currentQMV;
1350 : syskin 748 else
1351 : syskin 658 pMB->b_qmvs[0] = *Data->currentQMV;
1352 :     } else {
1353 :     pMB->pmvs[0].x = Data->currentMV->x - predMV->x;
1354 :     pMB->pmvs[0].y = Data->currentMV->y - predMV->y;
1355 :     }
1356 : syskin 739 if (mode_current == MODE_FORWARD) pMB->mvs[0] = *Data->currentMV;
1357 :     else pMB->b_mvs[0] = *Data->currentMV;
1358 :     }
1359 : syskin 658
1360 : syskin 768 if (mode_current == MODE_FORWARD) *(Data->currentMV+2) = *Data->currentMV;
1361 :     else *(Data->currentMV+1) = *Data->currentMV; //we store currmv for interpolate search
1362 : chl 530 }
1363 : chl 169
1364 : syskin 748 static void
1365 : syskin 712 SkipDecisionB(const IMAGE * const pCur,
1366 : syskin 767 const IMAGE * const f_Ref,
1367 :     const IMAGE * const b_Ref,
1368 :     MACROBLOCK * const pMB,
1369 :     const uint32_t x, const uint32_t y,
1370 :     const SearchData * const Data)
1371 : syskin 712 {
1372 : syskin 767 int dx = 0, dy = 0, b_dx = 0, b_dy = 0;
1373 : syskin 768 int32_t sum;
1374 : syskin 767 const int div = 1 + Data->qpel;
1375 :     int k;
1376 : syskin 768 const uint32_t stride = Data->iEdgedWidth/2;
1377 : syskin 712 //this is not full chroma compensation, only it's fullpel approximation. should work though
1378 :    
1379 : syskin 767 for (k = 0; k < 4; k++) {
1380 :     dy += Data->directmvF[k].y / div;
1381 :     dx += Data->directmvF[0].x / div;
1382 :     b_dy += Data->directmvB[0].y / div;
1383 :     b_dx += Data->directmvB[0].x / div;
1384 : syskin 712 }
1385 :    
1386 :     dy = (dy >> 3) + roundtab_76[dy & 0xf];
1387 :     dx = (dx >> 3) + roundtab_76[dx & 0xf];
1388 :     b_dy = (b_dy >> 3) + roundtab_76[b_dy & 0xf];
1389 :     b_dx = (b_dx >> 3) + roundtab_76[b_dx & 0xf];
1390 :    
1391 : syskin 768 sum = sad8bi(pCur->u + 8 * x + 8 * y * stride,
1392 :     f_Ref->u + (y*8 + dy/2) * stride + x*8 + dx/2,
1393 :     b_Ref->u + (y*8 + b_dy/2) * stride + x*8 + b_dx/2,
1394 :     stride);
1395 : syskin 767
1396 : syskin 768 if (sum >= 2 * MAX_CHROMA_SAD_FOR_SKIP * pMB->quant) return; //no skip
1397 : syskin 767
1398 : syskin 768 sum += sad8bi(pCur->v + 8*x + 8 * y * stride,
1399 :     f_Ref->v + (y*8 + dy/2) * stride + x*8 + dx/2,
1400 :     b_Ref->v + (y*8 + b_dy/2) * stride + x*8 + b_dx/2,
1401 :     stride);
1402 : syskin 712
1403 : syskin 768 if (sum < 2 * MAX_CHROMA_SAD_FOR_SKIP * pMB->quant) pMB->mode = MODE_DIRECT_NONE_MV; //skipped
1404 : syskin 712 }
1405 :    
1406 :     static __inline uint32_t
1407 : Isibaar 539 SearchDirect(const IMAGE * const f_Ref,
1408 : chl 530 const uint8_t * const f_RefH,
1409 :     const uint8_t * const f_RefV,
1410 :     const uint8_t * const f_RefHV,
1411 : Isibaar 539 const IMAGE * const b_Ref,
1412 : chl 530 const uint8_t * const b_RefH,
1413 :     const uint8_t * const b_RefV,
1414 :     const uint8_t * const b_RefHV,
1415 :     const IMAGE * const pCur,
1416 :     const int x, const int y,
1417 :     const uint32_t MotionFlags,
1418 :     const int32_t TRB, const int32_t TRD,
1419 :     const MBParam * const pParam,
1420 :     MACROBLOCK * const pMB,
1421 :     const MACROBLOCK * const b_mb,
1422 : h 545 int32_t * const best_sad,
1423 :     SearchData * const Data)
1424 : edgomez 195
1425 : chl 530 {
1426 : h 545 int32_t skip_sad;
1427 : syskin 768 int k = (x + Data->iEdgedWidth*y) * 16;
1428 : chl 530 MainSearchFunc *MainSearchPtr;
1429 : Isibaar 3
1430 : h 545 *Data->iMinSAD = 256*4096;
1431 : syskin 768 Data->Ref = f_Ref->y + k;
1432 :     Data->RefH = f_RefH + k;
1433 :     Data->RefV = f_RefV + k;
1434 :     Data->RefHV = f_RefHV + k;
1435 :     Data->bRef = b_Ref->y + k;
1436 :     Data->bRefH = b_RefH + k;
1437 :     Data->bRefV = b_RefV + k;
1438 :     Data->bRefHV = b_RefHV + k;
1439 : chl 140
1440 : syskin 768 k = Data->qpel ? 4 : 2;
1441 :     Data->max_dx = k * (pParam->width - x * 16);
1442 :     Data->max_dy = k * (pParam->height - y * 16);
1443 :     Data->min_dx = -k * (16 + x * 16);
1444 :     Data->min_dy = -k * (16 + y * 16);
1445 : chl 140
1446 : syskin 768 Data->referencemv = Data->qpel ? b_mb->qmvs : b_mb->mvs;
1447 :     Data->qpel_precision = 0;
1448 : Isibaar 3
1449 : chl 530 for (k = 0; k < 4; k++) {
1450 : h 545 pMB->mvs[k].x = Data->directmvF[k].x = ((TRB * Data->referencemv[k].x) / TRD);
1451 :     pMB->b_mvs[k].x = Data->directmvB[k].x = ((TRB - TRD) * Data->referencemv[k].x) / TRD;
1452 :     pMB->mvs[k].y = Data->directmvF[k].y = ((TRB * Data->referencemv[k].y) / TRD);
1453 :     pMB->b_mvs[k].y = Data->directmvB[k].y = ((TRB - TRD) * Data->referencemv[k].y) / TRD;
1454 : Isibaar 3
1455 : syskin 768 if ( (pMB->b_mvs[k].x > Data->max_dx) | (pMB->b_mvs[k].x < Data->min_dx)
1456 :     | (pMB->b_mvs[k].y > Data->max_dy) | (pMB->b_mvs[k].y < Data->min_dy) ) {
1457 : Isibaar 3
1458 : Isibaar 539 *best_sad = 256*4096; // in that case, we won't use direct mode
1459 :     pMB->mode = MODE_DIRECT; // just to make sure it doesn't say "MODE_DIRECT_NONE_MV"
1460 :     pMB->b_mvs[0].x = pMB->b_mvs[0].y = 0;
1461 : syskin 712 return 256*4096;
1462 : Isibaar 539 }
1463 :     if (b_mb->mode != MODE_INTER4V) {
1464 :     pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->mvs[0];
1465 :     pMB->b_mvs[1] = pMB->b_mvs[2] = pMB->b_mvs[3] = pMB->b_mvs[0];
1466 : h 545 Data->directmvF[1] = Data->directmvF[2] = Data->directmvF[3] = Data->directmvF[0];
1467 :     Data->directmvB[1] = Data->directmvB[2] = Data->directmvB[3] = Data->directmvB[0];
1468 : Isibaar 539 break;
1469 :     }
1470 :     }
1471 : Isibaar 3
1472 : syskin 768 CheckCandidate = b_mb->mode == MODE_INTER4V ? CheckCandidateDirect : CheckCandidateDirectno4v;
1473 :    
1474 : h 545 (*CheckCandidate)(0, 0, 255, &k, Data);
1475 : Isibaar 3
1476 : syskin 712 // initial (fast) skip decision
1477 : syskin 768 if (*Data->iMinSAD < pMB->quant * INITIAL_SKIP_THRESH * 2) {
1478 :     //possible skip - checking chroma
1479 :     SkipDecisionB(pCur, f_Ref, b_Ref, pMB, x, y, Data);
1480 : syskin 712 if (pMB->mode == MODE_DIRECT_NONE_MV) return *Data->iMinSAD; // skip.
1481 : Isibaar 539 }
1482 :    
1483 : h 545 skip_sad = *Data->iMinSAD;
1484 : edgomez 195
1485 : syskin 768 // DIRECT MODE DELTA VECTOR SEARCH.
1486 : chl 530 // This has to be made more effective, but at the moment I'm happy it's running at all
1487 : Isibaar 3
1488 : chl 530 if (MotionFlags & PMV_USESQUARES16) MainSearchPtr = SquareSearch;
1489 :     else if (MotionFlags & PMV_ADVANCEDDIAMOND16) MainSearchPtr = AdvDiamondSearch;
1490 :     else MainSearchPtr = DiamondSearch;
1491 : edgomez 195
1492 : h 545 (*MainSearchPtr)(0, 0, Data, 255);
1493 : Isibaar 3
1494 : syskin 663 SubpelRefine(Data);
1495 : Isibaar 3
1496 : h 545 *best_sad = *Data->iMinSAD;
1497 : Isibaar 3
1498 : syskin 768 if (Data->qpel || b_mb->mode == MODE_INTER4V) pMB->mode = MODE_DIRECT;
1499 : syskin 672 else pMB->mode = MODE_DIRECT_NO4V; //for faster compensation
1500 : edgomez 195
1501 : h 545 pMB->pmvs[3] = *Data->currentMV;
1502 : edgomez 195
1503 : chl 530 for (k = 0; k < 4; k++) {
1504 : h 545 pMB->mvs[k].x = Data->directmvF[k].x + Data->currentMV->x;
1505 : syskin 658 pMB->b_mvs[k].x = ( (Data->currentMV->x == 0)
1506 : h 545 ? Data->directmvB[k].x
1507 : syskin 658 :pMB->mvs[k].x - Data->referencemv[k].x);
1508 : h 545 pMB->mvs[k].y = (Data->directmvF[k].y + Data->currentMV->y);
1509 :     pMB->b_mvs[k].y = ((Data->currentMV->y == 0)
1510 :     ? Data->directmvB[k].y
1511 :     : pMB->mvs[k].y - Data->referencemv[k].y);
1512 : syskin 658 if (Data->qpel) {
1513 :     pMB->qmvs[k].x = pMB->mvs[k].x; pMB->mvs[k].x /= 2;
1514 :     pMB->b_qmvs[k].x = pMB->b_mvs[k].x; pMB->b_mvs[k].x /= 2;
1515 :     pMB->qmvs[k].y = pMB->mvs[k].y; pMB->mvs[k].y /= 2;
1516 :     pMB->b_qmvs[k].y = pMB->b_mvs[k].y; pMB->b_mvs[k].y /= 2;
1517 :     }
1518 :    
1519 : chl 530 if (b_mb->mode != MODE_INTER4V) {
1520 :     pMB->mvs[3] = pMB->mvs[2] = pMB->mvs[1] = pMB->mvs[0];
1521 :     pMB->b_mvs[3] = pMB->b_mvs[2] = pMB->b_mvs[1] = pMB->b_mvs[0];
1522 : syskin 658 pMB->qmvs[3] = pMB->qmvs[2] = pMB->qmvs[1] = pMB->qmvs[0];
1523 :     pMB->b_qmvs[3] = pMB->b_qmvs[2] = pMB->b_qmvs[1] = pMB->b_qmvs[0];
1524 : chl 530 break;
1525 :     }
1526 :     }
1527 : h 545 return skip_sad;
1528 : Isibaar 3 }
1529 : chl 96
1530 : syskin 712 static void
1531 : chl 530 SearchInterpolate(const uint8_t * const f_Ref,
1532 :     const uint8_t * const f_RefH,
1533 :     const uint8_t * const f_RefV,
1534 :     const uint8_t * const f_RefHV,
1535 :     const uint8_t * const b_Ref,
1536 :     const uint8_t * const b_RefH,
1537 :     const uint8_t * const b_RefV,
1538 :     const uint8_t * const b_RefHV,
1539 :     const IMAGE * const pCur,
1540 :     const int x, const int y,
1541 :     const uint32_t fcode,
1542 :     const uint32_t bcode,
1543 :     const uint32_t MotionFlags,
1544 :     const MBParam * const pParam,
1545 :     const VECTOR * const f_predMV,
1546 :     const VECTOR * const b_predMV,
1547 :     MACROBLOCK * const pMB,
1548 : h 545 int32_t * const best_sad,
1549 :     SearchData * const fData)
1550 : chl 530
1551 : chl 96 {
1552 :    
1553 : chl 530 int iDirection, i, j;
1554 : h 545 SearchData bData;
1555 : chl 96
1556 : syskin 712 fData->qpel_precision = 0;
1557 :     memcpy(&bData, fData, sizeof(SearchData)); //quick copy of common data
1558 :     *fData->iMinSAD = 4096*256;
1559 : syskin 739 bData.currentMV++; bData.currentQMV++;
1560 : h 545 fData->iFcode = bData.bFcode = fcode; fData->bFcode = bData.iFcode = bcode;
1561 : edgomez 195
1562 : syskin 712 i = (x + y * fData->iEdgedWidth) * 16;
1563 :     bData.bRef = fData->Ref = f_Ref + i;
1564 :     bData.bRefH = fData->RefH = f_RefH + i;
1565 :     bData.bRefV = fData->RefV = f_RefV + i;
1566 :     bData.bRefHV = fData->RefHV = f_RefHV + i;
1567 :     bData.Ref = fData->bRef = b_Ref + i;
1568 :     bData.RefH = fData->bRefH = b_RefH + i;
1569 :     bData.RefV = fData->bRefV = b_RefV + i;
1570 :     bData.RefHV = fData->bRefHV = b_RefHV + i;
1571 : chl 96
1572 : h 545 bData.bpredMV = fData->predMV = *f_predMV;
1573 :     fData->bpredMV = bData.predMV = *b_predMV;
1574 : syskin 661 fData->currentMV[0] = fData->currentMV[2];
1575 : chl 96
1576 : syskin 712 get_range(&fData->min_dx, &fData->max_dx, &fData->min_dy, &fData->max_dy, x, y, 16, pParam->width, pParam->height, fcode - fData->qpel, 0, 0);
1577 :     get_range(&bData.min_dx, &bData.max_dx, &bData.min_dy, &bData.max_dy, x, y, 16, pParam->width, pParam->height, bcode - fData->qpel, 0, 0);
1578 :    
1579 : h 545 if (fData->currentMV[0].x > fData->max_dx) fData->currentMV[0].x = fData->max_dx;
1580 : syskin 675 if (fData->currentMV[0].x < fData->min_dx) fData->currentMV[0].x = fData->min_dx;
1581 :     if (fData->currentMV[0].y > fData->max_dy) fData->currentMV[0].y = fData->max_dy;
1582 :     if (fData->currentMV[0].y < fData->min_dy) fData->currentMV[0].y = fData->min_dy;
1583 : Isibaar 539
1584 : h 545 if (fData->currentMV[1].x > bData.max_dx) fData->currentMV[1].x = bData.max_dx;
1585 : syskin 675 if (fData->currentMV[1].x < bData.min_dx) fData->currentMV[1].x = bData.min_dx;
1586 :     if (fData->currentMV[1].y > bData.max_dy) fData->currentMV[1].y = bData.max_dy;
1587 :     if (fData->currentMV[1].y < bData.min_dy) fData->currentMV[1].y = bData.min_dy;
1588 : Isibaar 539
1589 : h 545 CheckCandidateInt(fData->currentMV[0].x, fData->currentMV[0].y, 255, &iDirection, fData);
1590 : chl 96
1591 : syskin 768 //diamond
1592 : chl 530 do {
1593 :     iDirection = 255;
1594 :     // forward MV moves
1595 : h 545 i = fData->currentMV[0].x; j = fData->currentMV[0].y;
1596 : chl 96
1597 : h 545 CheckCandidateInt(i + 1, j, 0, &iDirection, fData);
1598 :     CheckCandidateInt(i, j + 1, 0, &iDirection, fData);
1599 :     CheckCandidateInt(i - 1, j, 0, &iDirection, fData);
1600 :     CheckCandidateInt(i, j - 1, 0, &iDirection, fData);
1601 : chl 96
1602 : chl 530 // backward MV moves
1603 : h 545 i = fData->currentMV[1].x; j = fData->currentMV[1].y;
1604 :     fData->currentMV[2] = fData->currentMV[0];
1605 : Isibaar 539 CheckCandidateInt(i + 1, j, 0, &iDirection, &bData);
1606 :     CheckCandidateInt(i, j + 1, 0, &iDirection, &bData);
1607 :     CheckCandidateInt(i - 1, j, 0, &iDirection, &bData);
1608 :     CheckCandidateInt(i, j - 1, 0, &iDirection, &bData);
1609 : chl 96
1610 : chl 530 } while (!(iDirection));
1611 : edgomez 195
1612 : syskin 768 //qpel refinement
1613 : syskin 658 if (fData->qpel) {
1614 : syskin 740 if (*fData->iMinSAD > *best_sad + 500) return;
1615 : syskin 675 CheckCandidate = CheckCandidateInt;
1616 : syskin 663 fData->qpel_precision = bData.qpel_precision = 1;
1617 : syskin 712 get_range(&fData->min_dx, &fData->max_dx, &fData->min_dy, &fData->max_dy, x, y, 16, pParam->width, pParam->height, fcode, 1, 0);
1618 :     get_range(&bData.min_dx, &bData.max_dx, &bData.min_dy, &bData.max_dy, x, y, 16, pParam->width, pParam->height, bcode, 1, 0);
1619 : syskin 658 fData->currentQMV[2].x = fData->currentQMV[0].x = 2 * fData->currentMV[0].x;
1620 :     fData->currentQMV[2].y = fData->currentQMV[0].y = 2 * fData->currentMV[0].y;
1621 :     fData->currentQMV[1].x = 2 * fData->currentMV[1].x;
1622 :     fData->currentQMV[1].y = 2 * fData->currentMV[1].y;
1623 : syskin 663 SubpelRefine(fData);
1624 : syskin 740 if (*fData->iMinSAD > *best_sad + 300) return;
1625 : syskin 658 fData->currentQMV[2] = fData->currentQMV[0];
1626 : syskin 663 SubpelRefine(&bData);
1627 : syskin 658 }
1628 :    
1629 : syskin 768 *fData->iMinSAD += (2+3) * fData->lambda16; // two bits are needed to code interpolate mode.
1630 :    
1631 : h 545 if (*fData->iMinSAD < *best_sad) {
1632 :     *best_sad = *fData->iMinSAD;
1633 :     pMB->mvs[0] = fData->currentMV[0];
1634 :     pMB->b_mvs[0] = fData->currentMV[1];
1635 : chl 530 pMB->mode = MODE_INTERPOLATE;
1636 : syskin 658 if (fData->qpel) {
1637 :     pMB->qmvs[0] = fData->currentQMV[0];
1638 :     pMB->b_qmvs[0] = fData->currentQMV[1];
1639 :     pMB->pmvs[1].x = pMB->qmvs[0].x - f_predMV->x;
1640 :     pMB->pmvs[1].y = pMB->qmvs[0].y - f_predMV->y;
1641 :     pMB->pmvs[0].x = pMB->b_qmvs[0].x - b_predMV->x;
1642 :     pMB->pmvs[0].y = pMB->b_qmvs[0].y - b_predMV->y;
1643 :     } else {
1644 :     pMB->pmvs[1].x = pMB->mvs[0].x - f_predMV->x;
1645 :     pMB->pmvs[1].y = pMB->mvs[0].y - f_predMV->y;
1646 :     pMB->pmvs[0].x = pMB->b_mvs[0].x - b_predMV->x;
1647 :     pMB->pmvs[0].y = pMB->b_mvs[0].y - b_predMV->y;
1648 :     }
1649 : chl 530 }
1650 :     }
1651 : chl 96
1652 : chl 530 void
1653 :     MotionEstimationBVOP(MBParam * const pParam,
1654 :     FRAMEINFO * const frame,
1655 :     const int32_t time_bp,
1656 :     const int32_t time_pp,
1657 :     // forward (past) reference
1658 :     const MACROBLOCK * const f_mbs,
1659 :     const IMAGE * const f_ref,
1660 :     const IMAGE * const f_refH,
1661 :     const IMAGE * const f_refV,
1662 :     const IMAGE * const f_refHV,
1663 :     // backward (future) reference
1664 : syskin 644 const FRAMEINFO * const b_reference,
1665 : chl 530 const IMAGE * const b_ref,
1666 :     const IMAGE * const b_refH,
1667 :     const IMAGE * const b_refV,
1668 :     const IMAGE * const b_refHV)
1669 :     {
1670 :     uint32_t i, j;
1671 : syskin 712 int32_t best_sad;
1672 :     uint32_t skip_sad;
1673 : chl 530 int f_count = 0, b_count = 0, i_count = 0, d_count = 0, n_count = 0;
1674 : syskin 644 const MACROBLOCK * const b_mbs = b_reference->mbs;
1675 : chl 96
1676 : chl 530 VECTOR f_predMV, b_predMV; /* there is no prediction for direct mode*/
1677 : chl 96
1678 : chl 530 const int32_t TRB = time_pp - time_bp;
1679 :     const int32_t TRD = time_pp;
1680 : chl 96
1681 : h 545 // some pre-inintialized data for the rest of the search
1682 :    
1683 :     SearchData Data;
1684 :     int32_t iMinSAD;
1685 :     VECTOR currentMV[3];
1686 : syskin 658 VECTOR currentQMV[3];
1687 : syskin 704 memset(&Data, 0, sizeof(SearchData));
1688 : h 545 Data.iEdgedWidth = pParam->edged_width;
1689 : syskin 658 Data.currentMV = currentMV; Data.currentQMV = currentQMV;
1690 : h 545 Data.iMinSAD = &iMinSAD;
1691 : syskin 712 Data.lambda16 = lambda_vec16[frame->quant];
1692 :     Data.chroma = frame->quant;
1693 : syskin 658 Data.qpel = pParam->m_quarterpel;
1694 : syskin 663 Data.rounding = 0;
1695 : h 545
1696 : syskin 754 Data.RefQ = f_refV->u; // a good place, also used in MC (for similar purpose)
1697 : chl 530 // note: i==horizontal, j==vertical
1698 :     for (j = 0; j < pParam->mb_height; j++) {
1699 : chl 96
1700 : chl 530 f_predMV = b_predMV = zeroMV; /* prediction is reset at left boundary */
1701 : edgomez 195
1702 : chl 530 for (i = 0; i < pParam->mb_width; i++) {
1703 :     MACROBLOCK * const pMB = frame->mbs + i + j * pParam->mb_width;
1704 :     const MACROBLOCK * const b_mb = b_mbs + i + j * pParam->mb_width;
1705 : edgomez 195
1706 : chl 619 /* special case, if collocated block is SKIPed in P-VOP: encoding is forward (0,0), cpb=0 without further ado */
1707 : syskin 644 if (b_reference->coding_type != S_VOP)
1708 :     if (b_mb->mode == MODE_NOT_CODED) {
1709 :     pMB->mode = MODE_NOT_CODED;
1710 :     continue;
1711 :     }
1712 : chl 96
1713 : h 545 Data.Cur = frame->image.y + (j * Data.iEdgedWidth + i) * 16;
1714 : syskin 601 pMB->quant = frame->quant;
1715 : syskin 628
1716 : chl 530 /* direct search comes first, because it (1) checks for SKIP-mode
1717 :     and (2) sets very good predictions for forward and backward search */
1718 : Isibaar 539 skip_sad = SearchDirect(f_ref, f_refH->y, f_refV->y, f_refHV->y,
1719 :     b_ref, b_refH->y, b_refV->y, b_refHV->y,
1720 : chl 530 &frame->image,
1721 :     i, j,
1722 :     frame->motion_flags,
1723 :     TRB, TRD,
1724 :     pParam,
1725 :     pMB, b_mb,
1726 : h 545 &best_sad,
1727 :     &Data);
1728 : chl 96
1729 : Isibaar 539 if (pMB->mode == MODE_DIRECT_NONE_MV) { n_count++; continue; }
1730 : syskin 739
1731 : chl 530 // forward search
1732 :     SearchBF(f_ref->y, f_refH->y, f_refV->y, f_refHV->y,
1733 :     &frame->image, i, j,
1734 :     frame->motion_flags,
1735 : h 545 frame->fcode, pParam,
1736 : chl 530 pMB, &f_predMV, &best_sad,
1737 : h 545 MODE_FORWARD, &Data);
1738 : chl 96
1739 : chl 530 // backward search
1740 :     SearchBF(b_ref->y, b_refH->y, b_refV->y, b_refHV->y,
1741 :     &frame->image, i, j,
1742 :     frame->motion_flags,
1743 : h 545 frame->bcode, pParam,
1744 : chl 530 pMB, &b_predMV, &best_sad,
1745 : h 545 MODE_BACKWARD, &Data);
1746 : chl 96
1747 : chl 530 // interpolate search comes last, because it uses data from forward and backward as prediction
1748 :     SearchInterpolate(f_ref->y, f_refH->y, f_refV->y, f_refHV->y,
1749 :     b_ref->y, b_refH->y, b_refV->y, b_refHV->y,
1750 :     &frame->image,
1751 :     i, j,
1752 :     frame->fcode, frame->bcode,
1753 :     frame->motion_flags,
1754 : h 545 pParam,
1755 : chl 530 &f_predMV, &b_predMV,
1756 : h 545 pMB, &best_sad,
1757 :     &Data);
1758 : syskin 662
1759 : syskin 712 // final skip decision
1760 :     if ( (skip_sad < frame->quant * MAX_SAD00_FOR_SKIP*2)
1761 :     && ((100*best_sad)/(skip_sad+1) > FINAL_SKIP_THRESH) )
1762 : syskin 767 SkipDecisionB(&frame->image, f_ref, b_ref, pMB, i, j, &Data);
1763 : syskin 712
1764 : chl 530 switch (pMB->mode) {
1765 :     case MODE_FORWARD:
1766 :     f_count++;
1767 : syskin 768 f_predMV = Data.qpel ? pMB->qmvs[0] : pMB->mvs[0];
1768 : chl 530 break;
1769 :     case MODE_BACKWARD:
1770 :     b_count++;
1771 : syskin 768 b_predMV = Data.qpel ? pMB->b_qmvs[0] : pMB->b_mvs[0];
1772 : chl 530 break;
1773 :     case MODE_INTERPOLATE:
1774 :     i_count++;
1775 : syskin 768 f_predMV = Data.qpel ? pMB->qmvs[0] : pMB->mvs[0];
1776 :     b_predMV = Data.qpel ? pMB->b_qmvs[0] : pMB->b_mvs[0];
1777 : chl 530 break;
1778 :     case MODE_DIRECT:
1779 :     case MODE_DIRECT_NO4V:
1780 :     d_count++;
1781 :     default:
1782 :     break;
1783 : chl 96 }
1784 :     }
1785 :     }
1786 :     }
1787 :    
1788 : syskin 739 static __inline void
1789 : Isibaar 539 MEanalyzeMB ( const uint8_t * const pRef,
1790 :     const uint8_t * const pCur,
1791 :     const int x,
1792 :     const int y,
1793 :     const MBParam * const pParam,
1794 : syskin 739 MACROBLOCK * const pMBs,
1795 : h 545 SearchData * const Data)
1796 : Isibaar 539 {
1797 : chl 317
1798 : syskin 739 int i, mask;
1799 : h 545 VECTOR pmv[3];
1800 : syskin 739 MACROBLOCK * pMB = &pMBs[x + y * pParam->mb_width];
1801 : syskin 768
1802 : syskin 739 for (i = 0; i < 5; i++) Data->iMinSAD[i] = MV_MAX_ERROR;
1803 : suxen_drol 118
1804 : syskin 640 //median is only used as prediction. it doesn't have to be real
1805 :     if (x == 1 && y == 1) Data->predMV.x = Data->predMV.y = 0;
1806 :     else
1807 :     if (x == 1) //left macroblock does not have any vector now
1808 :     Data->predMV = (pMB - pParam->mb_width)->mvs[0]; // top instead of median
1809 : syskin 748 else if (y == 1) // top macroblock doesn't have it's vector
1810 : syskin 640 Data->predMV = (pMB - 1)->mvs[0]; // left instead of median
1811 :     else Data->predMV = get_pmv2(pMBs, pParam->mb_width, 0, x, y, 0); //else median
1812 :    
1813 : h 545 get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
1814 : syskin 739 pParam->width, pParam->height, Data->iFcode - pParam->m_quarterpel, 0, Data->rrv);
1815 : chl 326
1816 : h 545 Data->Cur = pCur + (x + y * pParam->edged_width) * 16;
1817 :     Data->Ref = pRef + (x + y * pParam->edged_width) * 16;
1818 : syskin 739
1819 : Isibaar 539 pmv[1].x = EVEN(pMB->mvs[0].x);
1820 :     pmv[1].y = EVEN(pMB->mvs[0].y);
1821 : syskin 640 pmv[2].x = EVEN(Data->predMV.x);
1822 :     pmv[2].y = EVEN(Data->predMV.y);
1823 :     pmv[0].x = pmv[0].y = 0;
1824 : chl 326
1825 : syskin 739 CheckCandidate32I(0, 0, 255, &i, Data);
1826 : syskin 640
1827 : syskin 739 if (*Data->iMinSAD > 4 * MAX_SAD00_FOR_SKIP * 4) {
1828 : syskin 640
1829 : syskin 739 if (!(mask = make_mask(pmv, 1)))
1830 :     CheckCandidate32I(pmv[1].x, pmv[1].y, mask, &i, Data);
1831 :     if (!(mask = make_mask(pmv, 2)))
1832 :     CheckCandidate32I(pmv[2].x, pmv[2].y, mask, &i, Data);
1833 : Isibaar 539
1834 : syskin 739 if (*Data->iMinSAD > 4 * MAX_SAD00_FOR_SKIP * 4) // diamond only if needed
1835 :     DiamondSearch(Data->currentMV->x, Data->currentMV->y, Data, i);
1836 : Isibaar 539
1837 : syskin 739 for (i = 0; i < 4; i++) {
1838 : syskin 768 MACROBLOCK * MB = &pMBs[x + (i&1) + (y+(i>>1)) * pParam->mb_width];
1839 : syskin 739 MB->mvs[0] = MB->mvs[1] = MB->mvs[2] = MB->mvs[3] = Data->currentMV[i];
1840 :     MB->mode = MODE_INTER;
1841 :     MB->sad16 = Data->iMinSAD[i+1];
1842 :     }
1843 :     }
1844 : Isibaar 539 }
1845 :    
1846 : syskin 739 #define INTRA_BIAS 2500
1847 :     #define INTRA_THRESH 1500
1848 :     #define INTER_THRESH 1400
1849 : Isibaar 539
1850 :     int
1851 : syskin 768 MEanalysis( const IMAGE * const pRef,
1852 : syskin 644 FRAMEINFO * const Current,
1853 : Isibaar 539 MBParam * const pParam,
1854 : syskin 644 int maxIntra, //maximum number if non-I frames
1855 :     int intraCount, //number of non-I frames after last I frame; 0 if we force P/B frame
1856 : syskin 768 int bCount) // number of B frames in a row
1857 : Isibaar 539 {
1858 :     uint32_t x, y, intra = 0;
1859 :     int sSAD = 0;
1860 : syskin 644 MACROBLOCK * const pMBs = Current->mbs;
1861 :     const IMAGE * const pCurrent = &Current->image;
1862 :     int IntraThresh = INTRA_THRESH, InterThresh = INTER_THRESH;
1863 : h 545
1864 : syskin 739 int32_t iMinSAD[5], temp[5];
1865 :     VECTOR currentMV[5];
1866 : h 545 SearchData Data;
1867 :     Data.iEdgedWidth = pParam->edged_width;
1868 : syskin 739 Data.currentMV = currentMV;
1869 :     Data.iMinSAD = iMinSAD;
1870 : syskin 644 Data.iFcode = Current->fcode;
1871 : syskin 739 Data.rrv = Current->global_flags & XVID_REDUCED;
1872 :     Data.temp = temp;
1873 :     CheckCandidate = CheckCandidate32I;
1874 : h 545
1875 : syskin 768 if (intraCount != 0 && intraCount < 10) // we're right after an I frame
1876 : syskin 658 IntraThresh += 4 * (intraCount - 10) * (intraCount - 10);
1877 : syskin 644 else
1878 :     if ( 5*(maxIntra - intraCount) < maxIntra) // we're close to maximum. 2 sec when max is 10 sec
1879 :     IntraThresh -= (IntraThresh * (maxIntra - 5*(maxIntra - intraCount)))/maxIntra;
1880 :    
1881 : syskin 672 InterThresh += 400 * (1 - bCount);
1882 : syskin 739 if (InterThresh < 300) InterThresh = 300;
1883 : syskin 644
1884 : Isibaar 539 if (sadInit) (*sadInit) ();
1885 :    
1886 : syskin 768 for (y = 1; y < pParam->mb_height-1; y += 2) {
1887 :     for (x = 1; x < pParam->mb_width-1; x += 2) {
1888 : syskin 739 int i;
1889 : Isibaar 539
1890 : syskin 739 if (bCount == 0) pMBs[x + y * pParam->mb_width].mvs[0] = zeroMV;
1891 :    
1892 :     MEanalyzeMB(pRef->y, pCurrent->y, x, y, pParam, pMBs, &Data);
1893 : syskin 768
1894 : syskin 739 for (i = 0; i < 4; i++) {
1895 :     int dev;
1896 : syskin 768 MACROBLOCK *pMB = &pMBs[x+(i&1) + (y+(i>>1)) * pParam->mb_width];
1897 : syskin 739 if (pMB->sad16 > IntraThresh) {
1898 : syskin 768 dev = dev16(pCurrent->y + (x + (i&1) + (y + (i>>1)) * pParam->edged_width) * 16,
1899 :     pParam->edged_width);
1900 : syskin 739 if (dev + IntraThresh < pMB->sad16) {
1901 :     pMB->mode = MODE_INTRA;
1902 :     if (++intra > (pParam->mb_height-2)*(pParam->mb_width-2)/2) return I_VOP;
1903 :     }
1904 : Isibaar 539 }
1905 : syskin 739 sSAD += pMB->sad16;
1906 : syskin 644 }
1907 : suxen_drol 118 }
1908 :     }
1909 : syskin 704 sSAD /= (pParam->mb_height-2)*(pParam->mb_width-2);
1910 : syskin 768 if (sSAD > IntraThresh + INTRA_BIAS) return I_VOP;
1911 : suxen_drol 709 if (sSAD > InterThresh ) return P_VOP;
1912 : Isibaar 539 emms();
1913 : suxen_drol 709 return B_VOP;
1914 : syskin 712
1915 : suxen_drol 118 }
1916 : syskin 576
1917 : chl 769
1918 :     static WARPPOINTS
1919 :     GlobalMotionEst(const MACROBLOCK * const pMBs,
1920 :     const MBParam * const pParam,
1921 :     const FRAMEINFO * const current,
1922 :     const FRAMEINFO * const reference,
1923 :     const IMAGE * const pRefH,
1924 :     const IMAGE * const pRefV,
1925 :     const IMAGE * const pRefHV )
1926 : syskin 628 {
1927 : chl 619
1928 : chl 769 const int deltax=8; // upper bound for difference between a MV and it's neighbour MVs
1929 :     const int deltay=8;
1930 :     const int grad=512; // lower bound for deviation in MB
1931 :    
1932 :     WARPPOINTS gmc;
1933 :    
1934 :     uint32_t mx, my;
1935 : chl 619
1936 : chl 769 int MBh = pParam->mb_height;
1937 :     int MBw = pParam->mb_width;
1938 :    
1939 :     int *MBmask= calloc(MBh*MBw,sizeof(int));
1940 :     double DtimesF[4] = { 0.,0., 0., 0. };
1941 :     double sol[4] = { 0., 0., 0., 0. };
1942 :     double a,b,c,n,denom;
1943 :     double meanx,meany;
1944 :     int num,oldnum;
1945 :    
1946 :     if (!MBmask) { fprintf(stderr,"Mem error\n"); return gmc;}
1947 :    
1948 :     // filter mask of all blocks
1949 :    
1950 :     for (my = 1; my < MBh-1; my++)
1951 :     for (mx = 1; mx < MBw-1; mx++)
1952 :     {
1953 :     const int mbnum = mx + my * MBw;
1954 :     const MACROBLOCK *pMB = &pMBs[mbnum];
1955 :     const VECTOR mv = pMB->mvs[0];
1956 :    
1957 :     if (pMB->mode == MODE_INTRA || pMB->mode == MODE_NOT_CODED)
1958 :     continue;
1959 :    
1960 :     if ( ( (ABS(mv.x - (pMB-1)->mvs[0].x) < deltax) && (ABS(mv.y - (pMB-1)->mvs[0].y) < deltay) )
1961 :     && ( (ABS(mv.x - (pMB+1)->mvs[0].x) < deltax) && (ABS(mv.y - (pMB+1)->mvs[0].y) < deltay) )
1962 :     && ( (ABS(mv.x - (pMB-MBw)->mvs[0].x) < deltax) && (ABS(mv.y - (pMB-MBw)->mvs[0].y) < deltay) )
1963 :     && ( (ABS(mv.x - (pMB+MBw)->mvs[0].x) < deltax) && (ABS(mv.y - (pMB+MBw)->mvs[0].y) < deltay) ) )
1964 :     MBmask[mbnum]=1;
1965 : syskin 628 }
1966 : chl 769
1967 :     for (my = 1; my < MBh-1; my++)
1968 :     for (mx = 1; mx < MBw-1; mx++)
1969 :     {
1970 :     const uint8_t *const pCur = current->image.y + 16*my*pParam->edged_width + 16*mx;
1971 :    
1972 :     const int mbnum = mx + my * MBw;
1973 :     if (!MBmask[mbnum])
1974 :     continue;
1975 : syskin 628
1976 : chl 769 if (sad16 ( pCur, pCur+1 , pParam->edged_width, 65536) <= grad )
1977 :     MBmask[mbnum] = 0;
1978 :     if (sad16 ( pCur, pCur+pParam->edged_width, pParam->edged_width, 65536) <= grad )
1979 :     MBmask[mbnum] = 0;
1980 :    
1981 :     }
1982 : syskin 628
1983 : chl 769 emms();
1984 : chl 619
1985 : chl 769 do { /* until convergence */
1986 : chl 619
1987 : chl 769 a = b = c = n = 0;
1988 :     DtimesF[0] = DtimesF[1] = DtimesF[2] = DtimesF[3] = 0.;
1989 :     for (my = 0; my < MBh; my++)
1990 :     for (mx = 0; mx < MBw; mx++)
1991 :     {
1992 :     const int mbnum = mx + my * MBw;
1993 :     const MACROBLOCK *pMB = &pMBs[mbnum];
1994 :     const VECTOR mv = pMB->mvs[0];
1995 : chl 619
1996 : chl 769 if (!MBmask[mbnum])
1997 :     continue;
1998 :    
1999 :     n++;
2000 :     a += 16*mx+8;
2001 :     b += 16*my+8;
2002 :     c += (16*mx+8)*(16*mx+8)+(16*my+8)*(16*my+8);
2003 : syskin 768
2004 : chl 769 DtimesF[0] += (double)mv.x;
2005 :     DtimesF[1] += (double)mv.x*(16*mx+8) + (double)mv.y*(16*my+8);
2006 :     DtimesF[2] += (double)mv.x*(16*my+8) - (double)mv.y*(16*mx+8);
2007 :     DtimesF[3] += (double)mv.y;
2008 :     }
2009 : syskin 768
2010 : chl 769 denom = a*a+b*b-c*n;
2011 :    
2012 :     /* Solve the system: sol = (D'*E*D)^{-1} D'*E*F */
2013 :     /* D'*E*F has been calculated in the same loop as matrix */
2014 : syskin 768
2015 : chl 769 sol[0] = -c*DtimesF[0] + a*DtimesF[1] + b*DtimesF[2];
2016 :     sol[1] = a*DtimesF[0] - n*DtimesF[1] + b*DtimesF[3];
2017 :     sol[2] = b*DtimesF[0] - n*DtimesF[2] - a*DtimesF[3];
2018 :     sol[3] = b*DtimesF[1] - a*DtimesF[2] - c*DtimesF[3];
2019 : syskin 628
2020 : chl 769 sol[0] /= denom;
2021 :     sol[1] /= denom;
2022 :     sol[2] /= denom;
2023 :     sol[3] /= denom;
2024 :    
2025 :     meanx = meany = 0.;
2026 :     oldnum = 0;
2027 :     for (my = 0; my < MBh; my++)
2028 :     for (mx = 0; mx < MBw; mx++)
2029 :     {
2030 :     const int mbnum = mx + my * MBw;
2031 :     const MACROBLOCK *pMB = &pMBs[mbnum];
2032 :     const VECTOR mv = pMB->mvs[0];
2033 : syskin 628
2034 : chl 769 if (!MBmask[mbnum])
2035 :     continue;
2036 : syskin 628
2037 : chl 769 oldnum++;
2038 :     meanx += ABS(( sol[0] + (16*mx+8)*sol[1] + (16*my+8)*sol[2] ) - mv.x );
2039 :     meany += ABS(( sol[3] + (16*my+8)*sol[1] - (16*mx+8)*sol[2] ) - mv.y );
2040 :    
2041 :     }
2042 :    
2043 :     if (2*meanx > oldnum) /* mittlere Abweichung von Ebene */
2044 :     meanx /= oldnum;
2045 :     else
2046 :     meanx = 0.5;
2047 :     if (2*meany > oldnum)
2048 :     meany /= oldnum;
2049 :     else
2050 :     meanx = 0.5;
2051 :    
2052 :     // fprintf(stderr,"meanx = %8.5f meany = %8.5f %d\n",meanx,meany, oldnum);
2053 :    
2054 :     num = 0;
2055 :     for (my = 0; my < MBh; my++)
2056 :     for (mx = 0; mx < MBw; mx++)
2057 :     {
2058 :     const int mbnum = mx + my * MBw;
2059 :     const MACROBLOCK *pMB = &pMBs[mbnum];
2060 :     const VECTOR mv = pMB->mvs[0];
2061 :    
2062 :     if (!MBmask[mbnum])
2063 :     continue;
2064 :    
2065 :     if ( ( ABS(( sol[0] + (16*mx+8)*sol[1] + (16*my+8)*sol[2] ) - mv.x ) > meanx )
2066 :     || ( ABS(( sol[3] + (16*my+8)*sol[1] - (16*mx+8)*sol[2] ) - mv.y ) > meany ) )
2067 :     MBmask[mbnum]=0;
2068 :     else
2069 :     num++;
2070 :     }
2071 :    
2072 :     } while ( (oldnum != num) && (num>=4) );
2073 :    
2074 :     if (num < 4)
2075 :     {
2076 :     gmc.duv[0].x= gmc.duv[0].y= gmc.duv[1].x= gmc.duv[1].y= gmc.duv[2].x= gmc.duv[2].y=0;
2077 :     } else {
2078 :    
2079 :     gmc.duv[0].x=(int)(sol[0]+0.5);
2080 :     gmc.duv[0].y=(int)(sol[3]+0.5);
2081 :    
2082 :     gmc.duv[1].x=(int)(sol[1]*pParam->width+0.5);
2083 :     gmc.duv[1].y=(int)(-sol[2]*pParam->width+0.5);
2084 :    
2085 :     gmc.duv[2].x=0;
2086 :     gmc.duv[2].y=0;
2087 : chl 619 }
2088 : chl 769 // fprintf(stderr,"wp1 = ( %4d, %4d) wp2 = ( %4d, %4d) \n", gmc.duv[0].x, gmc.duv[0].y, gmc.duv[1].x, gmc.duv[1].y);
2089 : chl 619
2090 : chl 769 free(MBmask);
2091 :    
2092 : chl 619 return gmc;
2093 :     }

No admin address has been configured
ViewVC Help
Powered by ViewVC 1.0.4