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1 : | edgomez | 149 | /************************************************************************** |
2 : | * | ||
3 : | * XVID MPEG-4 VIDEO CODEC | ||
4 : | * - MB prediction header file - | ||
5 : | * | ||
6 : | * This program is an implementation of a part of one or more MPEG-4 | ||
7 : | * Video tools as specified in ISO/IEC 14496-2 standard. Those intending | ||
8 : | * to use this software module in hardware or software products are | ||
9 : | * advised that its use may infringe existing patents or copyrights, and | ||
10 : | * any such use would be at such party's own risk. The original | ||
11 : | * developer of this software module and his/her company, and subsequent | ||
12 : | * editors and their companies, will have no liability for use of this | ||
13 : | * software or modifications or derivatives thereof. | ||
14 : | * | ||
15 : | * This program is free software; you can redistribute it and/or modify | ||
16 : | * it under the terms of the GNU General Public License as published by | ||
17 : | * the xvid_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 xvid_free Software | ||
27 : | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
28 : | * | ||
29 : | edgomez | 456 | * $Id: mbprediction.h,v 1.15 2002-09-08 17:25:10 edgomez Exp $ |
30 : | edgomez | 149 | * |
31 : | *************************************************************************/ | ||
32 : | |||
33 : | Isibaar | 3 | #ifndef _MBPREDICTION_H_ |
34 : | #define _MBPREDICTION_H_ | ||
35 : | |||
36 : | #include "../portab.h" | ||
37 : | #include "../decoder.h" | ||
38 : | #include "../global.h" | ||
39 : | |||
40 : | #define MIN(X, Y) ((X)<(Y)?(X):(Y)) | ||
41 : | #define MAX(X, Y) ((X)>(Y)?(X):(Y)) | ||
42 : | |||
43 : | edgomez | 149 | /* very large value */ |
44 : | Isibaar | 3 | #define MV_MAX_ERROR (4096 * 256) |
45 : | |||
46 : | #define MVequal(A,B) ( ((A).x)==((B).x) && ((A).y)==((B).y) ) | ||
47 : | |||
48 : | edgomez | 445 | /***************************************************************************** |
49 : | * Prototypes | ||
50 : | ****************************************************************************/ | ||
51 : | |||
52 : | edgomez | 195 | void MBPrediction(FRAMEINFO * frame, /* <-- The parameter for ACDC and MV prediction */ |
53 : | Isibaar | 3 | |
54 : | edgomez | 195 | uint32_t x_pos, /* <-- The x position of the MB to be searched */ |
55 : | Isibaar | 3 | |
56 : | edgomez | 195 | uint32_t y_pos, /* <-- The y position of the MB to be searched */ |
57 : | Isibaar | 3 | |
58 : | edgomez | 195 | uint32_t x_dim, /* <-- Number of macroblocks in a row */ |
59 : | Isibaar | 3 | |
60 : | edgomez | 195 | int16_t * qcoeff); /* <-> The quantized DCT coefficients */ |
61 : | |||
62 : | void add_acdc(MACROBLOCK * pMB, | ||
63 : | uint32_t block, | ||
64 : | int16_t dct_codes[64], | ||
65 : | uint32_t iDcScaler, | ||
66 : | int16_t predictors[8]); | ||
67 : | |||
68 : | |||
69 : | void predict_acdc(MACROBLOCK * pMBs, | ||
70 : | uint32_t x, | ||
71 : | uint32_t y, | ||
72 : | uint32_t mb_width, | ||
73 : | uint32_t block, | ||
74 : | int16_t qcoeff[64], | ||
75 : | uint32_t current_quant, | ||
76 : | int32_t iDcScaler, | ||
77 : | suxen_drol | 248 | int16_t predictors[8], |
78 : | suxen_drol | 252 | const int bound); |
79 : | edgomez | 195 | |
80 : | suxen_drol | 248 | |
81 : | edgomez | 445 | /***************************************************************************** |
82 : | * Inlined functions | ||
83 : | ****************************************************************************/ | ||
84 : | chl | 139 | |
85 : | edgomez | 445 | /* |
86 : | * MODE_INTER, vm18 page 48 | ||
87 : | * MODE_INTER4V vm18 page 51 | ||
88 : | * | ||
89 : | * (x,y-1) (x+1,y-1) | ||
90 : | * [ | ] [ | ] | ||
91 : | * [ 2 | 3 ] [ 2 | ] | ||
92 : | * | ||
93 : | * (x-1,y) (x,y) (x+1,y) | ||
94 : | * [ | 1 ] [ 0 | 1 ] [ 0 | ] | ||
95 : | * [ | 3 ] [ 2 | 3 ] [ | ] | ||
96 : | */ | ||
97 : | chl | 139 | |
98 : | suxen_drol | 254 | static __inline VECTOR |
99 : | get_pmv2(const MACROBLOCK * const mbs, | ||
100 : | const int mb_width, | ||
101 : | const int bound, | ||
102 : | const int x, | ||
103 : | const int y, | ||
104 : | const int block) | ||
105 : | { | ||
106 : | static const VECTOR zeroMV = { 0, 0 }; | ||
107 : | |||
108 : | int lx, ly, lz; /* left */ | ||
109 : | int tx, ty, tz; /* top */ | ||
110 : | int rx, ry, rz; /* top-right */ | ||
111 : | int lpos, tpos, rpos; | ||
112 : | int num_cand, last_cand; | ||
113 : | |||
114 : | VECTOR pmv[4]; /* left neighbour, top neighbour, top-right neighbour */ | ||
115 : | |||
116 : | switch (block) { | ||
117 : | case 0: | ||
118 : | lx = x - 1; ly = y; lz = 1; | ||
119 : | tx = x; ty = y - 1; tz = 2; | ||
120 : | rx = x + 1; ry = y - 1; rz = 2; | ||
121 : | break; | ||
122 : | case 1: | ||
123 : | lx = x; ly = y; lz = 0; | ||
124 : | tx = x; ty = y - 1; tz = 3; | ||
125 : | rx = x + 1; ry = y - 1; rz = 2; | ||
126 : | break; | ||
127 : | case 2: | ||
128 : | lx = x - 1; ly = y; lz = 3; | ||
129 : | tx = x; ty = y; tz = 0; | ||
130 : | rx = x; ry = y; rz = 1; | ||
131 : | break; | ||
132 : | default: | ||
133 : | lx = x; ly = y; lz = 2; | ||
134 : | tx = x; ty = y; tz = 0; | ||
135 : | rx = x; ry = y; rz = 1; | ||
136 : | } | ||
137 : | |||
138 : | lpos = lx + ly * mb_width; | ||
139 : | rpos = rx + ry * mb_width; | ||
140 : | tpos = tx + ty * mb_width; | ||
141 : | edgomez | 456 | last_cand = num_cand = 0; |
142 : | suxen_drol | 254 | |
143 : | if (lpos >= bound && lx >= 0) { | ||
144 : | num_cand++; | ||
145 : | last_cand = 1; | ||
146 : | pmv[1] = mbs[lpos].mvs[lz]; | ||
147 : | } else { | ||
148 : | pmv[1] = zeroMV; | ||
149 : | } | ||
150 : | |||
151 : | if (tpos >= bound) { | ||
152 : | num_cand++; | ||
153 : | last_cand = 2; | ||
154 : | pmv[2] = mbs[tpos].mvs[tz]; | ||
155 : | } else { | ||
156 : | pmv[2] = zeroMV; | ||
157 : | } | ||
158 : | |||
159 : | if (rpos >= bound && rx < mb_width) { | ||
160 : | num_cand++; | ||
161 : | last_cand = 3; | ||
162 : | pmv[3] = mbs[rpos].mvs[rz]; | ||
163 : | } else { | ||
164 : | pmv[3] = zeroMV; | ||
165 : | } | ||
166 : | |||
167 : | edgomez | 456 | /* |
168 : | * If there're more than one candidate, we return the median vector | ||
169 : | * edgomez : the special case "no candidates" is handled the same way | ||
170 : | * because all vectors are set to zero. So the median vector | ||
171 : | * is {0,0}, and this is exactly the vector we must return | ||
172 : | * according to the mpeg4 specs. | ||
173 : | */ | ||
174 : | |||
175 : | suxen_drol | 254 | if (num_cand != 1) { |
176 : | /* set median */ | ||
177 : | |||
178 : | pmv[0].x = | ||
179 : | MIN(MAX(pmv[1].x, pmv[2].x), | ||
180 : | MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); | ||
181 : | pmv[0].y = | ||
182 : | MIN(MAX(pmv[1].y, pmv[2].y), | ||
183 : | MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); | ||
184 : | return pmv[0]; | ||
185 : | } | ||
186 : | |||
187 : | return pmv[last_cand]; /* no point calculating median mv */ | ||
188 : | } | ||
189 : | |||
190 : | |||
191 : | |||
192 : | edgomez | 445 | /* |
193 : | * pmv are filled with: | ||
194 : | * [0]: Median (or whatever is correct in a special case) | ||
195 : | * [1]: left neighbour | ||
196 : | * [2]: top neighbour | ||
197 : | * [3]: topright neighbour | ||
198 : | * psad are filled with: | ||
199 : | * [0]: minimum of [1] to [3] | ||
200 : | * [1]: left neighbour's SAD (NB:[1] to [3] are actually not needed) | ||
201 : | * [2]: top neighbour's SAD | ||
202 : | * [3]: topright neighbour's SAD | ||
203 : | */ | ||
204 : | chl | 286 | |
205 : | suxen_drol | 254 | static __inline int |
206 : | get_pmvdata2(const MACROBLOCK * const mbs, | ||
207 : | const int mb_width, | ||
208 : | const int bound, | ||
209 : | const int x, | ||
210 : | const int y, | ||
211 : | const int block, | ||
212 : | VECTOR * const pmv, | ||
213 : | int32_t * const psad) | ||
214 : | { | ||
215 : | static const VECTOR zeroMV = { 0, 0 }; | ||
216 : | |||
217 : | int lx, ly, lz; /* left */ | ||
218 : | int tx, ty, tz; /* top */ | ||
219 : | int rx, ry, rz; /* top-right */ | ||
220 : | int lpos, tpos, rpos; | ||
221 : | int num_cand, last_cand; | ||
222 : | |||
223 : | switch (block) { | ||
224 : | case 0: | ||
225 : | lx = x - 1; ly = y; lz = 1; | ||
226 : | tx = x; ty = y - 1; tz = 2; | ||
227 : | rx = x + 1; ry = y - 1; rz = 2; | ||
228 : | break; | ||
229 : | case 1: | ||
230 : | lx = x; ly = y; lz = 0; | ||
231 : | tx = x; ty = y - 1; tz = 3; | ||
232 : | rx = x + 1; ry = y - 1; rz = 2; | ||
233 : | break; | ||
234 : | case 2: | ||
235 : | lx = x - 1; ly = y; lz = 3; | ||
236 : | tx = x; ty = y; tz = 0; | ||
237 : | rx = x; ry = y; rz = 1; | ||
238 : | break; | ||
239 : | default: | ||
240 : | lx = x; ly = y; lz = 2; | ||
241 : | tx = x; ty = y; tz = 0; | ||
242 : | rx = x; ry = y; rz = 1; | ||
243 : | } | ||
244 : | |||
245 : | lpos = lx + ly * mb_width; | ||
246 : | rpos = rx + ry * mb_width; | ||
247 : | tpos = tx + ty * mb_width; | ||
248 : | edgomez | 456 | last_cand = num_cand = 0; |
249 : | suxen_drol | 254 | |
250 : | if (lpos >= bound && lx >= 0) { | ||
251 : | num_cand++; | ||
252 : | last_cand = 1; | ||
253 : | pmv[1] = mbs[lpos].mvs[lz]; | ||
254 : | psad[1] = mbs[lpos].sad8[lz]; | ||
255 : | } else { | ||
256 : | pmv[1] = zeroMV; | ||
257 : | psad[1] = MV_MAX_ERROR; | ||
258 : | } | ||
259 : | |||
260 : | if (tpos >= bound) { | ||
261 : | num_cand++; | ||
262 : | last_cand = 2; | ||
263 : | pmv[2]= mbs[tpos].mvs[tz]; | ||
264 : | psad[2] = mbs[tpos].sad8[tz]; | ||
265 : | } else { | ||
266 : | pmv[2] = zeroMV; | ||
267 : | psad[2] = MV_MAX_ERROR; | ||
268 : | } | ||
269 : | |||
270 : | if (rpos >= bound && rx < mb_width) { | ||
271 : | num_cand++; | ||
272 : | last_cand = 3; | ||
273 : | pmv[3] = mbs[rpos].mvs[rz]; | ||
274 : | psad[3] = mbs[rpos].sad8[rz]; | ||
275 : | } else { | ||
276 : | pmv[3] = zeroMV; | ||
277 : | psad[3] = MV_MAX_ERROR; | ||
278 : | } | ||
279 : | |||
280 : | /* original pmvdata() compatibility hack */ | ||
281 : | if (x == 0 && y == 0 && block == 0) | ||
282 : | { | ||
283 : | pmv[0] = pmv[1] = pmv[2] = pmv[3] = zeroMV; | ||
284 : | psad[0] = 0; | ||
285 : | psad[1] = psad[2] = psad[3] = MV_MAX_ERROR; | ||
286 : | return 0; | ||
287 : | } | ||
288 : | |||
289 : | /* if only one valid candidate preictor, the invalid candiates are set to the canidate */ | ||
290 : | if (num_cand == 1) { | ||
291 : | pmv[0] = pmv[last_cand]; | ||
292 : | psad[0] = psad[last_cand]; | ||
293 : | // return MVequal(pmv[0], zeroMV); /* no point calculating median mv and minimum sad */ | ||
294 : | |||
295 : | /* original pmvdata() compatibility hack */ | ||
296 : | return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); | ||
297 : | } | ||
298 : | |||
299 : | if ((MVequal(pmv[1], pmv[2])) && (MVequal(pmv[1], pmv[3]))) { | ||
300 : | pmv[0] = pmv[1]; | ||
301 : | psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); | ||
302 : | return 1; | ||
303 : | /* compatibility patch */ | ||
304 : | //return y==0 && block <= 1 ? 0 : 1; | ||
305 : | } | ||
306 : | |||
307 : | /* set median, minimum */ | ||
308 : | |||
309 : | pmv[0].x = | ||
310 : | MIN(MAX(pmv[1].x, pmv[2].x), | ||
311 : | MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); | ||
312 : | pmv[0].y = | ||
313 : | MIN(MAX(pmv[1].y, pmv[2].y), | ||
314 : | MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); | ||
315 : | |||
316 : | psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); | ||
317 : | |||
318 : | return 0; | ||
319 : | } | ||
320 : | |||
321 : | chl | 286 | /* copies of get_pmv and get_pmvdata for prediction from integer search */ |
322 : | suxen_drol | 254 | |
323 : | chl | 286 | static __inline VECTOR |
324 : | get_ipmv(const MACROBLOCK * const mbs, | ||
325 : | const int mb_width, | ||
326 : | const int bound, | ||
327 : | const int x, | ||
328 : | const int y, | ||
329 : | const int block) | ||
330 : | { | ||
331 : | static const VECTOR zeroMV = { 0, 0 }; | ||
332 : | |||
333 : | int lx, ly, lz; /* left */ | ||
334 : | int tx, ty, tz; /* top */ | ||
335 : | int rx, ry, rz; /* top-right */ | ||
336 : | int lpos, tpos, rpos; | ||
337 : | int num_cand, last_cand; | ||
338 : | |||
339 : | VECTOR pmv[4]; /* left neighbour, top neighbour, top-right neighbour */ | ||
340 : | |||
341 : | switch (block) { | ||
342 : | case 0: | ||
343 : | lx = x - 1; ly = y; lz = 1; | ||
344 : | tx = x; ty = y - 1; tz = 2; | ||
345 : | rx = x + 1; ry = y - 1; rz = 2; | ||
346 : | break; | ||
347 : | case 1: | ||
348 : | lx = x; ly = y; lz = 0; | ||
349 : | tx = x; ty = y - 1; tz = 3; | ||
350 : | rx = x + 1; ry = y - 1; rz = 2; | ||
351 : | break; | ||
352 : | case 2: | ||
353 : | lx = x - 1; ly = y; lz = 3; | ||
354 : | tx = x; ty = y; tz = 0; | ||
355 : | rx = x; ry = y; rz = 1; | ||
356 : | break; | ||
357 : | default: | ||
358 : | lx = x; ly = y; lz = 2; | ||
359 : | tx = x; ty = y; tz = 0; | ||
360 : | rx = x; ry = y; rz = 1; | ||
361 : | } | ||
362 : | |||
363 : | lpos = lx + ly * mb_width; | ||
364 : | rpos = rx + ry * mb_width; | ||
365 : | tpos = tx + ty * mb_width; | ||
366 : | edgomez | 456 | last_cand = num_cand = 0; |
367 : | chl | 286 | |
368 : | if (lpos >= bound && lx >= 0) { | ||
369 : | num_cand++; | ||
370 : | last_cand = 1; | ||
371 : | pmv[1] = mbs[lpos].i_mvs[lz]; | ||
372 : | } else { | ||
373 : | pmv[1] = zeroMV; | ||
374 : | } | ||
375 : | |||
376 : | if (tpos >= bound) { | ||
377 : | num_cand++; | ||
378 : | last_cand = 2; | ||
379 : | pmv[2] = mbs[tpos].i_mvs[tz]; | ||
380 : | } else { | ||
381 : | pmv[2] = zeroMV; | ||
382 : | } | ||
383 : | |||
384 : | if (rpos >= bound && rx < mb_width) { | ||
385 : | num_cand++; | ||
386 : | last_cand = 3; | ||
387 : | pmv[3] = mbs[rpos].i_mvs[rz]; | ||
388 : | } else { | ||
389 : | pmv[3] = zeroMV; | ||
390 : | } | ||
391 : | |||
392 : | /* if only one valid candidate predictor, the invalid candiates are set to the canidate */ | ||
393 : | if (num_cand != 1) { | ||
394 : | /* set median */ | ||
395 : | |||
396 : | pmv[0].x = | ||
397 : | MIN(MAX(pmv[1].x, pmv[2].x), | ||
398 : | MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); | ||
399 : | pmv[0].y = | ||
400 : | MIN(MAX(pmv[1].y, pmv[2].y), | ||
401 : | MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); | ||
402 : | return pmv[0]; | ||
403 : | } | ||
404 : | |||
405 : | return pmv[last_cand]; /* no point calculating median mv */ | ||
406 : | } | ||
407 : | |||
408 : | static __inline int | ||
409 : | get_ipmvdata(const MACROBLOCK * const mbs, | ||
410 : | const int mb_width, | ||
411 : | const int bound, | ||
412 : | const int x, | ||
413 : | const int y, | ||
414 : | const int block, | ||
415 : | VECTOR * const pmv, | ||
416 : | int32_t * const psad) | ||
417 : | { | ||
418 : | static const VECTOR zeroMV = { 0, 0 }; | ||
419 : | |||
420 : | int lx, ly, lz; /* left */ | ||
421 : | int tx, ty, tz; /* top */ | ||
422 : | int rx, ry, rz; /* top-right */ | ||
423 : | int lpos, tpos, rpos; | ||
424 : | int num_cand, last_cand; | ||
425 : | |||
426 : | switch (block) { | ||
427 : | case 0: | ||
428 : | lx = x - 1; ly = y; lz = 1; | ||
429 : | tx = x; ty = y - 1; tz = 2; | ||
430 : | rx = x + 1; ry = y - 1; rz = 2; | ||
431 : | break; | ||
432 : | case 1: | ||
433 : | lx = x; ly = y; lz = 0; | ||
434 : | tx = x; ty = y - 1; tz = 3; | ||
435 : | rx = x + 1; ry = y - 1; rz = 2; | ||
436 : | break; | ||
437 : | case 2: | ||
438 : | lx = x - 1; ly = y; lz = 3; | ||
439 : | tx = x; ty = y; tz = 0; | ||
440 : | rx = x; ry = y; rz = 1; | ||
441 : | break; | ||
442 : | default: | ||
443 : | lx = x; ly = y; lz = 2; | ||
444 : | tx = x; ty = y; tz = 0; | ||
445 : | rx = x; ry = y; rz = 1; | ||
446 : | } | ||
447 : | |||
448 : | lpos = lx + ly * mb_width; | ||
449 : | rpos = rx + ry * mb_width; | ||
450 : | tpos = tx + ty * mb_width; | ||
451 : | edgomez | 456 | last_cand = num_cand = 0; |
452 : | chl | 286 | |
453 : | if (lpos >= bound && lx >= 0) { | ||
454 : | num_cand++; | ||
455 : | last_cand = 1; | ||
456 : | pmv[1] = mbs[lpos].i_mvs[lz]; | ||
457 : | psad[1] = mbs[lpos].i_sad8[lz]; | ||
458 : | } else { | ||
459 : | pmv[1] = zeroMV; | ||
460 : | psad[1] = MV_MAX_ERROR; | ||
461 : | } | ||
462 : | |||
463 : | if (tpos >= bound) { | ||
464 : | num_cand++; | ||
465 : | last_cand = 2; | ||
466 : | pmv[2]= mbs[tpos].i_mvs[tz]; | ||
467 : | psad[2] = mbs[tpos].i_sad8[tz]; | ||
468 : | } else { | ||
469 : | pmv[2] = zeroMV; | ||
470 : | psad[2] = MV_MAX_ERROR; | ||
471 : | } | ||
472 : | |||
473 : | if (rpos >= bound && rx < mb_width) { | ||
474 : | num_cand++; | ||
475 : | last_cand = 3; | ||
476 : | pmv[3] = mbs[rpos].i_mvs[rz]; | ||
477 : | psad[3] = mbs[rpos].i_sad8[rz]; | ||
478 : | } else { | ||
479 : | pmv[3] = zeroMV; | ||
480 : | psad[3] = MV_MAX_ERROR; | ||
481 : | } | ||
482 : | |||
483 : | /* original pmvdata() compatibility hack */ | ||
484 : | if (x == 0 && y == 0 && block == 0) | ||
485 : | { | ||
486 : | pmv[0] = pmv[1] = pmv[2] = pmv[3] = zeroMV; | ||
487 : | psad[0] = 0; | ||
488 : | psad[1] = psad[2] = psad[3] = MV_MAX_ERROR; | ||
489 : | return 0; | ||
490 : | } | ||
491 : | |||
492 : | /* if only one valid candidate preictor, the invalid candiates are set to the canidate */ | ||
493 : | if (num_cand == 1) { | ||
494 : | pmv[0] = pmv[last_cand]; | ||
495 : | psad[0] = psad[last_cand]; | ||
496 : | // return MVequal(pmv[0], zeroMV); /* no point calculating median mv and minimum sad */ | ||
497 : | |||
498 : | /* original pmvdata() compatibility hack */ | ||
499 : | return y==0 && block <= 1 ? 0 : MVequal(pmv[0], zeroMV); | ||
500 : | } | ||
501 : | |||
502 : | if ((MVequal(pmv[1], pmv[2])) && (MVequal(pmv[1], pmv[3]))) { | ||
503 : | pmv[0] = pmv[1]; | ||
504 : | psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); | ||
505 : | return 1; | ||
506 : | /* compatibility patch */ | ||
507 : | //return y==0 && block <= 1 ? 0 : 1; | ||
508 : | } | ||
509 : | |||
510 : | /* set median, minimum */ | ||
511 : | |||
512 : | pmv[0].x = | ||
513 : | MIN(MAX(pmv[1].x, pmv[2].x), | ||
514 : | MIN(MAX(pmv[2].x, pmv[3].x), MAX(pmv[1].x, pmv[3].x))); | ||
515 : | pmv[0].y = | ||
516 : | MIN(MAX(pmv[1].y, pmv[2].y), | ||
517 : | MIN(MAX(pmv[2].y, pmv[3].y), MAX(pmv[1].y, pmv[3].y))); | ||
518 : | |||
519 : | psad[0] = MIN(MIN(psad[1], psad[2]), psad[3]); | ||
520 : | |||
521 : | return 0; | ||
522 : | } | ||
523 : | |||
524 : | |||
525 : | edgomez | 195 | #endif /* _MBPREDICTION_H_ */ |
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