FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/motion_estimation.c
Date: 2026-09-28 04:46:15
Exec Total Coverage
Lines: 51 202 25.2%
Functions: 4 11 36.4%
Branches: 57 370 15.4%
Line Branch Exec Source
1 /**
2 * Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/common.h"
22 #include "motion_estimation.h"
23
24 static const int8_t sqr1[8][2] = {{ 0,-1}, { 0, 1}, {-1, 0}, { 1, 0}, {-1,-1}, {-1, 1}, { 1,-1}, { 1, 1}};
25 static const int8_t dia1[4][2] = {{-1, 0}, { 0,-1}, { 1, 0}, { 0, 1}};
26 static const int8_t dia2[8][2] = {{-2, 0}, {-1,-1}, { 0,-2}, { 1,-1}, { 2, 0}, { 1, 1}, { 0, 2}, {-1, 1}};
27 static const int8_t hex2[6][2] = {{-2, 0}, {-1,-2}, {-1, 2}, { 1,-2}, { 1, 2}, { 2, 0}};
28 static const int8_t hex4[16][2] = {{-4,-2}, {-4,-1}, {-4, 0}, {-4, 1}, {-4, 2},
29 { 4,-2}, { 4,-1}, { 4, 0}, { 4, 1}, { 4, 2},
30 {-2, 3}, { 0, 4}, { 2, 3}, {-2,-3}, { 0,-4}, { 2,-3}};
31
32 #define COST_MV(x, y)\
33 do {\
34 cost = me_ctx->get_cost(me_ctx, x_mb, y_mb, x, y);\
35 if (cost < cost_min) {\
36 cost_min = cost;\
37 mv[0] = x;\
38 mv[1] = y;\
39 }\
40 } while(0)
41
42 #define COST_P_MV(x, y)\
43 if (x >= x_min && x <= x_max && y >= y_min && y <= y_max)\
44 COST_MV(x, y);
45
46 4 void ff_me_init_context(AVMotionEstContext *me_ctx, int mb_size, int search_param,
47 int width, int height, int x_min, int x_max, int y_min, int y_max)
48 {
49 4 me_ctx->width = width;
50 4 me_ctx->height = height;
51 4 me_ctx->mb_size = mb_size;
52 4 me_ctx->search_param = search_param;
53 4 me_ctx->get_cost = &ff_me_cmp_sad;
54 4 me_ctx->x_min = x_min;
55 4 me_ctx->x_max = x_max;
56 4 me_ctx->y_min = y_min;
57 4 me_ctx->y_max = y_max;
58 4 }
59
60 6698860 uint64_t ff_me_cmp_sad(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int x_mv, int y_mv)
61 {
62 6698860 const int linesize = me_ctx->linesize;
63 6698860 uint8_t *data_ref = me_ctx->data_ref;
64 6698860 uint8_t *data_cur = me_ctx->data_cur;
65 6698860 uint64_t sad = 0;
66 int i, j;
67
68 6698860 data_ref += y_mv * linesize;
69 6698860 data_cur += y_mb * linesize;
70
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 1714908160 sad += FFABS(data_ref[x_mv + i + j * linesize] - data_cur[x_mb + i + j * linesize]);
74
75 6698860 return sad;
76 }
77
78 242440 uint64_t ff_me_search_esa(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
79 {
80 int x, y;
81 242440 int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
82 242440 int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
83 242440 int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
84 242440 int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
85 uint64_t cost, cost_min;
86
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 242440 if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
88 213644 return cost_min;
89
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 6456420 COST_MV(x, y);
93
94 28796 return cost_min;
95 }
96
97 ✗ uint64_t ff_me_search_tss(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
98 {
99 int x, y;
100 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
101 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
102 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
103 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
104 uint64_t cost, cost_min;
105 ✗ int step = ROUNDED_DIV(me_ctx->search_param, 2);
106 int i;
107
108 ✗ mv[0] = x_mb;
109 ✗ mv[1] = y_mb;
110
111 ✗ if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
112 ✗ return cost_min;
113
114 do {
115 ✗ x = mv[0];
116 ✗ y = mv[1];
117
118 ✗ for (i = 0; i < 8; i++)
119 ✗ COST_P_MV(x + sqr1[i][0] * step, y + sqr1[i][1] * step);
120
121 ✗ step = step >> 1;
122
123 ✗ } while (step > 0);
124
125 ✗ return cost_min;
126 }
127
128 ✗ uint64_t ff_me_search_tdls(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
129 {
130 int x, y;
131 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
132 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
133 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
134 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
135 uint64_t cost, cost_min;
136 ✗ int step = ROUNDED_DIV(me_ctx->search_param, 2);
137 int i;
138
139 ✗ mv[0] = x_mb;
140 ✗ mv[1] = y_mb;
141
142 ✗ if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
143 ✗ return cost_min;
144
145 do {
146 ✗ x = mv[0];
147 ✗ y = mv[1];
148
149 ✗ for (i = 0; i < 4; i++)
150 ✗ COST_P_MV(x + dia1[i][0] * step, y + dia1[i][1] * step);
151
152 ✗ if (x == mv[0] && y == mv[1])
153 ✗ step = step >> 1;
154
155 ✗ } while (step > 0);
156
157 ✗ return cost_min;
158 }
159
160 ✗ uint64_t ff_me_search_ntss(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
161 {
162 int x, y;
163 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
164 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
165 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
166 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
167 uint64_t cost, cost_min;
168 ✗ int step = ROUNDED_DIV(me_ctx->search_param, 2);
169 ✗ int first_step = 1;
170 int i;
171
172 ✗ mv[0] = x_mb;
173 ✗ mv[1] = y_mb;
174
175 ✗ if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
176 ✗ return cost_min;
177
178 do {
179 ✗ x = mv[0];
180 ✗ y = mv[1];
181
182 ✗ for (i = 0; i < 8; i++)
183 ✗ COST_P_MV(x + sqr1[i][0] * step, y + sqr1[i][1] * step);
184
185 /* addition to TSS in NTSS */
186 ✗ if (first_step) {
187
188 ✗ for (i = 0; i < 8; i++)
189 ✗ COST_P_MV(x + sqr1[i][0], y + sqr1[i][1]);
190
191 ✗ if (x == mv[0] && y == mv[1])
192 ✗ return cost_min;
193
194 ✗ if (FFABS(x - mv[0]) <= 1 && FFABS(y - mv[1]) <= 1) {
195 ✗ x = mv[0];
196 ✗ y = mv[1];
197
198 ✗ for (i = 0; i < 8; i++)
199 ✗ COST_P_MV(x + sqr1[i][0], y + sqr1[i][1]);
200 ✗ return cost_min;
201 }
202
203 ✗ first_step = 0;
204 }
205
206 ✗ step = step >> 1;
207
208 ✗ } while (step > 0);
209
210 ✗ return cost_min;
211 }
212
213 ✗ uint64_t ff_me_search_fss(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
214 {
215 int x, y;
216 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
217 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
218 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
219 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
220 uint64_t cost, cost_min;
221 ✗ int step = 2;
222 int i;
223
224 ✗ mv[0] = x_mb;
225 ✗ mv[1] = y_mb;
226
227 ✗ if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
228 ✗ return cost_min;
229
230 do {
231 ✗ x = mv[0];
232 ✗ y = mv[1];
233
234 ✗ for (i = 0; i < 8; i++)
235 ✗ COST_P_MV(x + sqr1[i][0] * step, y + sqr1[i][1] * step);
236
237 ✗ if (x == mv[0] && y == mv[1])
238 ✗ step = step >> 1;
239
240 ✗ } while (step > 0);
241
242 ✗ return cost_min;
243 }
244
245 ✗ uint64_t ff_me_search_ds(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
246 {
247 int x, y;
248 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
249 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
250 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
251 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
252 uint64_t cost, cost_min;
253 int i;
254 av_unused int dir_x, dir_y;
255
256 ✗ if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
257 ✗ return cost_min;
258
259 ✗ x = x_mb; y = y_mb;
260 ✗ dir_x = dir_y = 0;
261
262 do {
263 ✗ x = mv[0];
264 ✗ y = mv[1];
265
266 #if 1
267 ✗ for (i = 0; i < 8; i++)
268 ✗ COST_P_MV(x + dia2[i][0], y + dia2[i][1]);
269 #else
270 /* this version skips previously examined 3 or 5 locations based on prev origin */
271 if (dir_x <= 0)
272 COST_P_MV(x - 2, y);
273 if (dir_x <= 0 && dir_y <= 0)
274 COST_P_MV(x - 1, y - 1);
275 if (dir_y <= 0)
276 COST_P_MV(x, y - 2);
277 if (dir_x >= 0 && dir_y <= 0)
278 COST_P_MV(x + 1, y - 1);
279 if (dir_x >= 0)
280 COST_P_MV(x + 2, y);
281 if (dir_x >= 0 && dir_y >= 0)
282 COST_P_MV(x + 1, y + 1);
283 if (dir_y >= 0)
284 COST_P_MV(x, y + 2);
285 if (dir_x <= 0 && dir_y >= 0)
286 COST_P_MV(x - 1, y + 1);
287
288 dir_x = mv[0] - x;
289 dir_y = mv[1] - y;
290 #endif
291
292 ✗ } while (x != mv[0] || y != mv[1]);
293
294 ✗ for (i = 0; i < 4; i++)
295 ✗ COST_P_MV(x + dia1[i][0], y + dia1[i][1]);
296
297 ✗ return cost_min;
298 }
299
300 ✗ uint64_t ff_me_search_hexbs(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
301 {
302 int x, y;
303 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
304 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
305 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
306 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
307 uint64_t cost, cost_min;
308 int i;
309
310 ✗ if (!(cost_min = me_ctx->get_cost(me_ctx, x_mb, y_mb, x_mb, y_mb)))
311 ✗ return cost_min;
312
313 do {
314 ✗ x = mv[0];
315 ✗ y = mv[1];
316
317 ✗ for (i = 0; i < 6; i++)
318 ✗ COST_P_MV(x + hex2[i][0], y + hex2[i][1]);
319
320 ✗ } while (x != mv[0] || y != mv[1]);
321
322 ✗ for (i = 0; i < 4; i++)
323 ✗ COST_P_MV(x + dia1[i][0], y + dia1[i][1]);
324
325 ✗ return cost_min;
326 }
327
328 /* two subsets of predictors are used
329 me->pred_x|y is set to median of current frame's left, top, top-right
330 set 1: me->preds[0] has: (0, 0), left, top, top-right, collocated block in prev frame
331 set 2: me->preds[1] has: accelerator mv, top, left, right, bottom adj mb of prev frame
332 */
333 1200 uint64_t ff_me_search_epzs(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
334 {
335 int x, y;
336 1200 int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
337 1200 int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
338 1200 int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
339 1200 int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
340 uint64_t cost, cost_min;
341 int i;
342
343 1200 AVMotionEstPredictor *preds = me_ctx->preds;
344
345 1200 cost_min = UINT64_MAX;
346
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 1200 COST_P_MV(x_mb + me_ctx->pred_x, y_mb + me_ctx->pred_y);
348
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 5724 COST_P_MV(x_mb + preds[0].mvs[i][0], y_mb + preds[0].mvs[i][1]);
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 5720 COST_P_MV(x_mb + preds[1].mvs[i][0], y_mb + preds[1].mvs[i][1]);
354
355 do {
356 2906 x = mv[0];
357 2906 y = mv[1];
358
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 11624 COST_P_MV(x + dia1[i][0], y + dia1[i][1]);
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 2906 } while (x != mv[0] || y != mv[1]);
363
364 1200 return cost_min;
365 }
366
367 /* required predictor order: median, (0,0), left, top, top-right
368 rules when mb not available:
369 replace left with (0, 0)
370 replace top-right with top-left
371 replace top two with left
372 repeated can be skipped, if no predictors are used, set me_ctx->pred to (0,0)
373 */
374 ✗ uint64_t ff_me_search_umh(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
375 {
376 int x, y;
377 ✗ int x_min = FFMAX(me_ctx->x_min, x_mb - me_ctx->search_param);
378 ✗ int y_min = FFMAX(me_ctx->y_min, y_mb - me_ctx->search_param);
379 ✗ int x_max = FFMIN(x_mb + me_ctx->search_param, me_ctx->x_max);
380 ✗ int y_max = FFMIN(y_mb + me_ctx->search_param, me_ctx->y_max);
381 uint64_t cost, cost_min;
382 int d, i;
383 int end_x, end_y;
384
385 ✗ AVMotionEstPredictor *pred = &me_ctx->preds[0];
386
387 ✗ cost_min = UINT64_MAX;
388
389 ✗ COST_P_MV(x_mb + me_ctx->pred_x, y_mb + me_ctx->pred_y);
390
391 ✗ for (i = 0; i < pred->nb; i++)
392 ✗ COST_P_MV(x_mb + pred->mvs[i][0], y_mb + pred->mvs[i][1]);
393
394 // Unsymmetrical-cross Search
395 ✗ x = mv[0];
396 ✗ y = mv[1];
397 ✗ for (d = 1; d <= me_ctx->search_param; d += 2) {
398 ✗ COST_P_MV(x - d, y);
399 ✗ COST_P_MV(x + d, y);
400 ✗ if (d <= me_ctx->search_param / 2) {
401 ✗ COST_P_MV(x, y - d);
402 ✗ COST_P_MV(x, y + d);
403 }
404 }
405
406 // Uneven Multi-Hexagon-Grid Search
407 ✗ end_x = FFMIN(mv[0] + 2, x_max);
408 ✗ end_y = FFMIN(mv[1] + 2, y_max);
409 ✗ for (y = FFMAX(y_min, mv[1] - 2); y <= end_y; y++)
410 ✗ for (x = FFMAX(x_min, mv[0] - 2); x <= end_x; x++)
411 ✗ COST_P_MV(x, y);
412
413 ✗ x = mv[0];
414 ✗ y = mv[1];
415 ✗ for (d = 1; d <= me_ctx->search_param / 4; d++)
416 ✗ for (i = 1; i < 16; i++)
417 ✗ COST_P_MV(x + hex4[i][0] * d, y + hex4[i][1] * d);
418
419 // Extended Hexagon-based Search
420 do {
421 ✗ x = mv[0];
422 ✗ y = mv[1];
423
424 ✗ for (i = 0; i < 6; i++)
425 ✗ COST_P_MV(x + hex2[i][0], y + hex2[i][1]);
426
427 ✗ } while (x != mv[0] || y != mv[1]);
428
429 ✗ for (i = 0; i < 4; i++)
430 ✗ COST_P_MV(x + dia1[i][0], y + dia1[i][1]);
431
432 ✗ return cost_min;
433 }
434