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aarch64: Add assembly support for -fsanitize=hwaddress tagged globals.
[libav.git] / libavcodec / h264_mb.c
blob51d73ce7107dbb3e2800bb9a7ea39b4f2235c0df
1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * H.264 / AVC / MPEG-4 part10 macroblock decoding
25 */
26
27 #include <stdint.h>
28
29 #include "config.h"
30
31 #include "libavutil/common.h"
32 #include "libavutil/intreadwrite.h"
33 #include "avcodec.h"
34 #include "h264dec.h"
35 #include "h264_ps.h"
36 #include "qpeldsp.h"
37 #include "thread.h"
38
39 static inline int get_lowest_part_list_y(H264SliceContext *sl,
40 int n, int height, int y_offset, int list)
41 {
42 int raw_my = sl->mv_cache[list][scan8[n]][1];
43 int filter_height_up = (raw_my & 3) ? 2 : 0;
44 int filter_height_down = (raw_my & 3) ? 3 : 0;
45 int full_my = (raw_my >> 2) + y_offset;
46 int top = full_my - filter_height_up;
47 int bottom = full_my + filter_height_down + height;
48
49 return FFMAX(abs(top), bottom);
50 }
51
52 static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
53 int refs[2][48], int n,
54 int height, int y_offset, int list0,
55 int list1, int *nrefs)
56 {
57 int my;
58
59 y_offset += 16 * (sl->mb_y >> MB_FIELD(sl));
60
61 if (list0) {
62 int ref_n = sl->ref_cache[0][scan8[n]];
63 H264Ref *ref = &sl->ref_list[0][ref_n];
64
65 // Error resilience puts the current picture in the ref list.
66 // Don't try to wait on these as it will cause a deadlock.
67 // Fields can wait on each other, though.
68 if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
69 (ref->reference & 3) != h->picture_structure) {
70 my = get_lowest_part_list_y(sl, n, height, y_offset, 0);
71 if (refs[0][ref_n] < 0)
72 nrefs[0] += 1;
73 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
74 }
75 }
76
77 if (list1) {
78 int ref_n = sl->ref_cache[1][scan8[n]];
79 H264Ref *ref = &sl->ref_list[1][ref_n];
80
81 if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
82 (ref->reference & 3) != h->picture_structure) {
83 my = get_lowest_part_list_y(sl, n, height, y_offset, 1);
84 if (refs[1][ref_n] < 0)
85 nrefs[1] += 1;
86 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
87 }
88 }
89 }
90
91 /**
92 * Wait until all reference frames are available for MC operations.
93 *
94 * @param h the H.264 context
95 */
96 static void await_references(const H264Context *h, H264SliceContext *sl)
97 {
98 const int mb_xy = sl->mb_xy;
99 const int mb_type = h->cur_pic.mb_type[mb_xy];
100 int refs[2][48];
101 int nrefs[2] = { 0 };
102 int ref, list;
103
104 memset(refs, -1, sizeof(refs));
105
106 if (IS_16X16(mb_type)) {
107 get_lowest_part_y(h, sl, refs, 0, 16, 0,
108 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
109 } else if (IS_16X8(mb_type)) {
110 get_lowest_part_y(h, sl, refs, 0, 8, 0,
111 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
112 get_lowest_part_y(h, sl, refs, 8, 8, 8,
113 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
114 } else if (IS_8X16(mb_type)) {
115 get_lowest_part_y(h, sl, refs, 0, 16, 0,
116 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
117 get_lowest_part_y(h, sl, refs, 4, 16, 0,
118 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
119 } else {
120 int i;
121
122 assert(IS_8X8(mb_type));
123
124 for (i = 0; i < 4; i++) {
125 const int sub_mb_type = sl->sub_mb_type[i];
126 const int n = 4 * i;
127 int y_offset = (i & 2) << 2;
128
129 if (IS_SUB_8X8(sub_mb_type)) {
130 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
131 IS_DIR(sub_mb_type, 0, 0),
132 IS_DIR(sub_mb_type, 0, 1),
133 nrefs);
134 } else if (IS_SUB_8X4(sub_mb_type)) {
135 get_lowest_part_y(h, sl, refs, n, 4, y_offset,
136 IS_DIR(sub_mb_type, 0, 0),
137 IS_DIR(sub_mb_type, 0, 1),
138 nrefs);
139 get_lowest_part_y(h, sl, refs, n + 2, 4, y_offset + 4,
140 IS_DIR(sub_mb_type, 0, 0),
141 IS_DIR(sub_mb_type, 0, 1),
142 nrefs);
143 } else if (IS_SUB_4X8(sub_mb_type)) {
144 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
145 IS_DIR(sub_mb_type, 0, 0),
146 IS_DIR(sub_mb_type, 0, 1),
147 nrefs);
148 get_lowest_part_y(h, sl, refs, n + 1, 8, y_offset,
149 IS_DIR(sub_mb_type, 0, 0),
150 IS_DIR(sub_mb_type, 0, 1),
151 nrefs);
152 } else {
153 int j;
154 assert(IS_SUB_4X4(sub_mb_type));
155 for (j = 0; j < 4; j++) {
156 int sub_y_offset = y_offset + 2 * (j & 2);
157 get_lowest_part_y(h, sl, refs, n + j, 4, sub_y_offset,
158 IS_DIR(sub_mb_type, 0, 0),
159 IS_DIR(sub_mb_type, 0, 1),
160 nrefs);
161 }
162 }
163 }
164 }
165
166 for (list = sl->list_count - 1; list >= 0; list--)
167 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
168 int row = refs[list][ref];
169 if (row >= 0) {
170 H264Ref *ref_pic = &sl->ref_list[list][ref];
171 int ref_field = ref_pic->reference - 1;
172 int ref_field_picture = ref_pic->parent->field_picture;
173 int pic_height = 16 * h->mb_height >> ref_field_picture;
174
175 row <<= MB_MBAFF(sl);
176 nrefs[list]--;
177
178 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
179 ff_thread_await_progress(&ref_pic->parent->tf,
180 FFMIN((row >> 1) - !(row & 1),
181 pic_height - 1),
182 1);
183 ff_thread_await_progress(&ref_pic->parent->tf,
184 FFMIN((row >> 1), pic_height - 1),
185 0);
186 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
187 ff_thread_await_progress(&ref_pic->parent->tf,
188 FFMIN(row * 2 + ref_field,
189 pic_height - 1),
190 0);
191 } else if (FIELD_PICTURE(h)) {
192 ff_thread_await_progress(&ref_pic->parent->tf,
193 FFMIN(row, pic_height - 1),
194 ref_field);
195 } else {
196 ff_thread_await_progress(&ref_pic->parent->tf,
197 FFMIN(row, pic_height - 1),
198 0);
199 }
200 }
201 }
202 }
203
204 static av_always_inline void mc_dir_part(const H264Context *h, H264SliceContext *sl,
205 H264Ref *pic,
206 int n, int square, int height,
207 int delta, int list,
208 uint8_t *dest_y, uint8_t *dest_cb,
209 uint8_t *dest_cr,
210 int src_x_offset, int src_y_offset,
211 const qpel_mc_func *qpix_op,
212 h264_chroma_mc_func chroma_op,
213 int pixel_shift, int chroma_idc)
214 {
215 const int mx = sl->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
216 int my = sl->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
217 const int luma_xy = (mx & 3) + ((my & 3) << 2);
218 ptrdiff_t offset = ((mx >> 2) << pixel_shift) + (my >> 2) * sl->mb_linesize;
219 uint8_t *src_y = pic->data[0] + offset;
220 uint8_t *src_cb, *src_cr;
221 int extra_width = 0;
222 int extra_height = 0;
223 int emu = 0;
224 const int full_mx = mx >> 2;
225 const int full_my = my >> 2;
226 const int pic_width = 16 * h->mb_width;
227 const int pic_height = 16 * h->mb_height >> MB_FIELD(sl);
228 int ysh;
229
230 if (mx & 7)
231 extra_width -= 3;
232 if (my & 7)
233 extra_height -= 3;
234
235 if (full_mx < 0 - extra_width ||
236 full_my < 0 - extra_height ||
237 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
238 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
239 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
240 src_y - (2 << pixel_shift) - 2 * sl->mb_linesize,
241 sl->mb_linesize, sl->mb_linesize,
242 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
243 full_my - 2, pic_width, pic_height);
244 src_y = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
245 emu = 1;
246 }
247
248 qpix_op[luma_xy](dest_y, src_y, sl->mb_linesize); // FIXME try variable height perhaps?
249 if (!square)
250 qpix_op[luma_xy](dest_y + delta, src_y + delta, sl->mb_linesize);
251
252 if (CONFIG_GRAY && h->flags & AV_CODEC_FLAG_GRAY)
253 return;
254
255 if (chroma_idc == 3 /* yuv444 */) {
256 src_cb = pic->data[1] + offset;
257 if (emu) {
258 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
259 src_cb - (2 << pixel_shift) - 2 * sl->mb_linesize,
260 sl->mb_linesize, sl->mb_linesize,
261 16 + 5, 16 + 5 /*FIXME*/,
262 full_mx - 2, full_my - 2,
263 pic_width, pic_height);
264 src_cb = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
265 }
266 qpix_op[luma_xy](dest_cb, src_cb, sl->mb_linesize); // FIXME try variable height perhaps?
267 if (!square)
268 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, sl->mb_linesize);
269
270 src_cr = pic->data[2] + offset;
271 if (emu) {
272 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
273 src_cr - (2 << pixel_shift) - 2 * sl->mb_linesize,
274 sl->mb_linesize, sl->mb_linesize,
275 16 + 5, 16 + 5 /*FIXME*/,
276 full_mx - 2, full_my - 2,
277 pic_width, pic_height);
278 src_cr = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
279 }
280 qpix_op[luma_xy](dest_cr, src_cr, sl->mb_linesize); // FIXME try variable height perhaps?
281 if (!square)
282 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, sl->mb_linesize);
283 return;
284 }
285
286 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
287 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(sl)) {
288 // chroma offset when predicting from a field of opposite parity
289 my += 2 * ((sl->mb_y & 1) - (pic->reference - 1));
290 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
291 }
292
293 src_cb = pic->data[1] + ((mx >> 3) << pixel_shift) +
294 (my >> ysh) * sl->mb_uvlinesize;
295 src_cr = pic->data[2] + ((mx >> 3) << pixel_shift) +
296 (my >> ysh) * sl->mb_uvlinesize;
297
298 if (emu) {
299 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cb,
300 sl->mb_uvlinesize, sl->mb_uvlinesize,
301 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
302 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
303 src_cb = sl->edge_emu_buffer;
304 }
305 chroma_op(dest_cb, src_cb, sl->mb_uvlinesize,
306 height >> (chroma_idc == 1 /* yuv420 */),
307 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
308
309 if (emu) {
310 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cr,
311 sl->mb_uvlinesize, sl->mb_uvlinesize,
312 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
313 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
314 src_cr = sl->edge_emu_buffer;
315 }
316 chroma_op(dest_cr, src_cr, sl->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
317 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
318 }
319
320 static av_always_inline void mc_part_std(const H264Context *h, H264SliceContext *sl,
321 int n, int square,
322 int height, int delta,
323 uint8_t *dest_y, uint8_t *dest_cb,
324 uint8_t *dest_cr,
325 int x_offset, int y_offset,
326 const qpel_mc_func *qpix_put,
327 h264_chroma_mc_func chroma_put,
328 const qpel_mc_func *qpix_avg,
329 h264_chroma_mc_func chroma_avg,
330 int list0, int list1,
331 int pixel_shift, int chroma_idc)
332 {
333 const qpel_mc_func *qpix_op = qpix_put;
334 h264_chroma_mc_func chroma_op = chroma_put;
335
336 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
337 if (chroma_idc == 3 /* yuv444 */) {
338 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
339 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
340 } else if (chroma_idc == 2 /* yuv422 */) {
341 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
342 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
343 } else { /* yuv420 */
344 dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
345 dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
346 }
347 x_offset += 8 * sl->mb_x;
348 y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
349
350 if (list0) {
351 H264Ref *ref = &sl->ref_list[0][sl->ref_cache[0][scan8[n]]];
352 mc_dir_part(h, sl, ref, n, square, height, delta, 0,
353 dest_y, dest_cb, dest_cr, x_offset, y_offset,
354 qpix_op, chroma_op, pixel_shift, chroma_idc);
355
356 qpix_op = qpix_avg;
357 chroma_op = chroma_avg;
358 }
359
360 if (list1) {
361 H264Ref *ref = &sl->ref_list[1][sl->ref_cache[1][scan8[n]]];
362 mc_dir_part(h, sl, ref, n, square, height, delta, 1,
363 dest_y, dest_cb, dest_cr, x_offset, y_offset,
364 qpix_op, chroma_op, pixel_shift, chroma_idc);
365 }
366 }
367
368 static av_always_inline void mc_part_weighted(const H264Context *h, H264SliceContext *sl,
369 int n, int square,
370 int height, int delta,
371 uint8_t *dest_y, uint8_t *dest_cb,
372 uint8_t *dest_cr,
373 int x_offset, int y_offset,
374 const qpel_mc_func *qpix_put,
375 h264_chroma_mc_func chroma_put,
376 h264_weight_func luma_weight_op,
377 h264_weight_func chroma_weight_op,
378 h264_biweight_func luma_weight_avg,
379 h264_biweight_func chroma_weight_avg,
380 int list0, int list1,
381 int pixel_shift, int chroma_idc)
382 {
383 int chroma_height;
384
385 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
386 if (chroma_idc == 3 /* yuv444 */) {
387 chroma_height = height;
388 chroma_weight_avg = luma_weight_avg;
389 chroma_weight_op = luma_weight_op;
390 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
391 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
392 } else if (chroma_idc == 2 /* yuv422 */) {
393 chroma_height = height;
394 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
395 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
396 } else { /* yuv420 */
397 chroma_height = height >> 1;
398 dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
399 dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
400 }
401 x_offset += 8 * sl->mb_x;
402 y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
403
404 if (list0 && list1) {
405 /* don't optimize for luma-only case, since B-frames usually
406 * use implicit weights => chroma too. */
407 uint8_t *tmp_cb = sl->bipred_scratchpad;
408 uint8_t *tmp_cr = sl->bipred_scratchpad + (16 << pixel_shift);
409 uint8_t *tmp_y = sl->bipred_scratchpad + 16 * sl->mb_uvlinesize;
410 int refn0 = sl->ref_cache[0][scan8[n]];
411 int refn1 = sl->ref_cache[1][scan8[n]];
412
413 mc_dir_part(h, sl, &sl->ref_list[0][refn0], n, square, height, delta, 0,
414 dest_y, dest_cb, dest_cr,
415 x_offset, y_offset, qpix_put, chroma_put,
416 pixel_shift, chroma_idc);
417 mc_dir_part(h, sl, &sl->ref_list[1][refn1], n, square, height, delta, 1,
418 tmp_y, tmp_cb, tmp_cr,
419 x_offset, y_offset, qpix_put, chroma_put,
420 pixel_shift, chroma_idc);
421
422 if (sl->pwt.use_weight == 2) {
423 int weight0 = sl->pwt.implicit_weight[refn0][refn1][sl->mb_y & 1];
424 int weight1 = 64 - weight0;
425 luma_weight_avg(dest_y, tmp_y, sl->mb_linesize,
426 height, 5, weight0, weight1, 0);
427 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize,
428 chroma_height, 5, weight0, weight1, 0);
429 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize,
430 chroma_height, 5, weight0, weight1, 0);
431 } else {
432 luma_weight_avg(dest_y, tmp_y, sl->mb_linesize, height,
433 sl->pwt.luma_log2_weight_denom,
434 sl->pwt.luma_weight[refn0][0][0],
435 sl->pwt.luma_weight[refn1][1][0],
436 sl->pwt.luma_weight[refn0][0][1] +
437 sl->pwt.luma_weight[refn1][1][1]);
438 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize, chroma_height,
439 sl->pwt.chroma_log2_weight_denom,
440 sl->pwt.chroma_weight[refn0][0][0][0],
441 sl->pwt.chroma_weight[refn1][1][0][0],
442 sl->pwt.chroma_weight[refn0][0][0][1] +
443 sl->pwt.chroma_weight[refn1][1][0][1]);
444 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize, chroma_height,
445 sl->pwt.chroma_log2_weight_denom,
446 sl->pwt.chroma_weight[refn0][0][1][0],
447 sl->pwt.chroma_weight[refn1][1][1][0],
448 sl->pwt.chroma_weight[refn0][0][1][1] +
449 sl->pwt.chroma_weight[refn1][1][1][1]);
450 }
451 } else {
452 int list = list1 ? 1 : 0;
453 int refn = sl->ref_cache[list][scan8[n]];
454 H264Ref *ref = &sl->ref_list[list][refn];
455 mc_dir_part(h, sl, ref, n, square, height, delta, list,
456 dest_y, dest_cb, dest_cr, x_offset, y_offset,
457 qpix_put, chroma_put, pixel_shift, chroma_idc);
458
459 luma_weight_op(dest_y, sl->mb_linesize, height,
460 sl->pwt.luma_log2_weight_denom,
461 sl->pwt.luma_weight[refn][list][0],
462 sl->pwt.luma_weight[refn][list][1]);
463 if (sl->pwt.use_weight_chroma) {
464 chroma_weight_op(dest_cb, sl->mb_uvlinesize, chroma_height,
465 sl->pwt.chroma_log2_weight_denom,
466 sl->pwt.chroma_weight[refn][list][0][0],
467 sl->pwt.chroma_weight[refn][list][0][1]);
468 chroma_weight_op(dest_cr, sl->mb_uvlinesize, chroma_height,
469 sl->pwt.chroma_log2_weight_denom,
470 sl->pwt.chroma_weight[refn][list][1][0],
471 sl->pwt.chroma_weight[refn][list][1][1]);
472 }
473 }
474 }
475
476 static av_always_inline void prefetch_motion(const H264Context *h, H264SliceContext *sl,
477 int list, int pixel_shift,
478 int chroma_idc)
479 {
480 /* fetch pixels for estimated mv 4 macroblocks ahead
481 * optimized for 64byte cache lines */
482 const int refn = sl->ref_cache[list][scan8[0]];
483 if (refn >= 0) {
484 const int mx = (sl->mv_cache[list][scan8[0]][0] >> 2) + 16 * sl->mb_x + 8;
485 const int my = (sl->mv_cache[list][scan8[0]][1] >> 2) + 16 * sl->mb_y;
486 uint8_t **src = sl->ref_list[list][refn].data;
487 int off = (mx << pixel_shift) +
488 (my + (sl->mb_x & 3) * 4) * sl->mb_linesize +
489 (64 << pixel_shift);
490 h->vdsp.prefetch(src[0] + off, sl->linesize, 4);
491 if (chroma_idc == 3 /* yuv444 */) {
492 h->vdsp.prefetch(src[1] + off, sl->linesize, 4);
493 h->vdsp.prefetch(src[2] + off, sl->linesize, 4);
494 } else {
495 off = ((mx >> 1) << pixel_shift) +
496 ((my >> 1) + (sl->mb_x & 7)) * sl->uvlinesize +
497 (64 << pixel_shift);
498 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
499 }
500 }
501 }
502
503 static av_always_inline void xchg_mb_border(const H264Context *h, H264SliceContext *sl,
504 uint8_t *src_y,
505 uint8_t *src_cb, uint8_t *src_cr,
506 int linesize, int uvlinesize,
507 int xchg, int chroma444,
508 int simple, int pixel_shift)
509 {
510 int deblock_topleft;
511 int deblock_top;
512 int top_idx = 1;
513 uint8_t *top_border_m1;
514 uint8_t *top_border;
515
516 if (!simple && FRAME_MBAFF(h)) {
517 if (sl->mb_y & 1) {
518 if (!MB_MBAFF(sl))
519 return;
520 } else {
521 top_idx = MB_MBAFF(sl) ? 0 : 1;
522 }
523 }
524
525 if (sl->deblocking_filter == 2) {
526 deblock_topleft = h->slice_table[sl->mb_xy - 1 - h->mb_stride] == sl->slice_num;
527 deblock_top = sl->top_type;
528 } else {
529 deblock_topleft = (sl->mb_x > 0);
530 deblock_top = (sl->mb_y > !!MB_FIELD(sl));
531 }
532
533 src_y -= linesize + 1 + pixel_shift;
534 src_cb -= uvlinesize + 1 + pixel_shift;
535 src_cr -= uvlinesize + 1 + pixel_shift;
536
537 top_border_m1 = sl->top_borders[top_idx][sl->mb_x - 1];
538 top_border = sl->top_borders[top_idx][sl->mb_x];
539
540 #define XCHG(a, b, xchg) \
541 if (pixel_shift) { \
542 if (xchg) { \
543 AV_SWAP64(b + 0, a + 0); \
544 AV_SWAP64(b + 8, a + 8); \
545 } else { \
546 AV_COPY128(b, a); \
547 } \
548 } else if (xchg) \
549 AV_SWAP64(b, a); \
550 else \
551 AV_COPY64(b, a);
552
553 if (deblock_top) {
554 if (deblock_topleft) {
555 XCHG(top_border_m1 + (8 << pixel_shift),
556 src_y - (7 << pixel_shift), 1);
557 }
558 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
559 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
560 if (sl->mb_x + 1 < h->mb_width) {
561 XCHG(sl->top_borders[top_idx][sl->mb_x + 1],
562 src_y + (17 << pixel_shift), 1);
563 }
564 }
565 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
566 if (chroma444) {
567 if (deblock_top) {
568 if (deblock_topleft) {
569 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
570 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
571 }
572 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
573 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
574 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
575 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
576 if (sl->mb_x + 1 < h->mb_width) {
577 XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
578 XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
579 }
580 }
581 } else {
582 if (deblock_top) {
583 if (deblock_topleft) {
584 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
585 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
586 }
587 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
588 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
589 }
590 }
591 }
592 }
593
594 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
595 int index)
596 {
597 if (high_bit_depth) {
598 return AV_RN32A(((int32_t *)mb) + index);
599 } else
600 return AV_RN16A(mb + index);
601 }
602
603 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
604 int index, int value)
605 {
606 if (high_bit_depth) {
607 AV_WN32A(((int32_t *)mb) + index, value);
608 } else
609 AV_WN16A(mb + index, value);
610 }
611
612 static av_always_inline void hl_decode_mb_predict_luma(const H264Context *h,
613 H264SliceContext *sl,
614 int mb_type, int simple,
615 int transform_bypass,
616 int pixel_shift,
617 const int *block_offset,
618 int linesize,
619 uint8_t *dest_y, int p)
620 {
621 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
622 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
623 int i;
624 int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];
625 block_offset += 16 * p;
626 if (IS_INTRA4x4(mb_type)) {
627 if (IS_8x8DCT(mb_type)) {
628 if (transform_bypass) {
629 idct_dc_add =
630 idct_add = h->h264dsp.h264_add_pixels8_clear;
631 } else {
632 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
633 idct_add = h->h264dsp.h264_idct8_add;
634 }
635 for (i = 0; i < 16; i += 4) {
636 uint8_t *const ptr = dest_y + block_offset[i];
637 const int dir = sl->intra4x4_pred_mode_cache[scan8[i]];
638 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
639 if (h->x264_build < 151U) {
640 h->hpc.pred8x8l_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
641 } else
642 h->hpc.pred8x8l_filter_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift),
643 (sl-> topleft_samples_available << i) & 0x8000,
644 (sl->topright_samples_available << i) & 0x4000, linesize);
645 } else {
646 const int nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
647 h->hpc.pred8x8l[dir](ptr, (sl->topleft_samples_available << i) & 0x8000,
648 (sl->topright_samples_available << i) & 0x4000, linesize);
649 if (nnz) {
650 if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
651 idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
652 else
653 idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
654 }
655 }
656 }
657 } else {
658 if (transform_bypass) {
659 idct_dc_add =
660 idct_add = h->h264dsp.h264_add_pixels4_clear;
661 } else {
662 idct_dc_add = h->h264dsp.h264_idct_dc_add;
663 idct_add = h->h264dsp.h264_idct_add;
664 }
665 for (i = 0; i < 16; i++) {
666 uint8_t *const ptr = dest_y + block_offset[i];
667 const int dir = sl->intra4x4_pred_mode_cache[scan8[i]];
668
669 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
670 h->hpc.pred4x4_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
671 } else {
672 uint8_t *topright;
673 int nnz, tr;
674 uint64_t tr_high;
675 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
676 const int topright_avail = (sl->topright_samples_available << i) & 0x8000;
677 assert(sl->mb_y || linesize <= block_offset[i]);
678 if (!topright_avail) {
679 if (pixel_shift) {
680 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
681 topright = (uint8_t *)&tr_high;
682 } else {
683 tr = ptr[3 - linesize] * 0x01010101u;
684 topright = (uint8_t *)&tr;
685 }
686 } else
687 topright = ptr + (4 << pixel_shift) - linesize;
688 } else
689 topright = NULL;
690
691 h->hpc.pred4x4[dir](ptr, topright, linesize);
692 nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
693 if (nnz) {
694 if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
695 idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
696 else
697 idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
698 }
699 }
700 }
701 }
702 } else {
703 h->hpc.pred16x16[sl->intra16x16_pred_mode](dest_y, linesize);
704 if (sl->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
705 if (!transform_bypass)
706 h->h264dsp.h264_luma_dc_dequant_idct(sl->mb + (p * 256 << pixel_shift),
707 sl->mb_luma_dc[p],
708 h->ps.pps->dequant4_coeff[p][qscale][0]);
709 else {
710 static const uint8_t dc_mapping[16] = {
711 0 * 16, 1 * 16, 4 * 16, 5 * 16,
712 2 * 16, 3 * 16, 6 * 16, 7 * 16,
713 8 * 16, 9 * 16, 12 * 16, 13 * 16,
714 10 * 16, 11 * 16, 14 * 16, 15 * 16
715 };
716 for (i = 0; i < 16; i++)
717 dctcoef_set(sl->mb + (p * 256 << pixel_shift),
718 pixel_shift, dc_mapping[i],
719 dctcoef_get(sl->mb_luma_dc[p],
720 pixel_shift, i));
721 }
722 }
723 }
724 }
725
726 static av_always_inline void hl_decode_mb_idct_luma(const H264Context *h, H264SliceContext *sl,
727 int mb_type, int simple,
728 int transform_bypass,
729 int pixel_shift,
730 const int *block_offset,
731 int linesize,
732 uint8_t *dest_y, int p)
733 {
734 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
735 int i;
736 block_offset += 16 * p;
737 if (!IS_INTRA4x4(mb_type)) {
738 if (IS_INTRA16x16(mb_type)) {
739 if (transform_bypass) {
740 if (h->ps.sps->profile_idc == 244 &&
741 (sl->intra16x16_pred_mode == VERT_PRED8x8 ||
742 sl->intra16x16_pred_mode == HOR_PRED8x8)) {
743 h->hpc.pred16x16_add[sl->intra16x16_pred_mode](dest_y, block_offset,
744 sl->mb + (p * 256 << pixel_shift),
745 linesize);
746 } else {
747 for (i = 0; i < 16; i++)
748 if (sl->non_zero_count_cache[scan8[i + p * 16]] ||
749 dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
750 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
751 sl->mb + (i * 16 + p * 256 << pixel_shift),
752 linesize);
753 }
754 } else {
755 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
756 sl->mb + (p * 256 << pixel_shift),
757 linesize,
758 sl->non_zero_count_cache + p * 5 * 8);
759 }
760 } else if (sl->cbp & 15) {
761 if (transform_bypass) {
762 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
763 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
764 : h->h264dsp.h264_add_pixels4_clear;
765 for (i = 0; i < 16; i += di)
766 if (sl->non_zero_count_cache[scan8[i + p * 16]])
767 idct_add(dest_y + block_offset[i],
768 sl->mb + (i * 16 + p * 256 << pixel_shift),
769 linesize);
770 } else {
771 if (IS_8x8DCT(mb_type))
772 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
773 sl->mb + (p * 256 << pixel_shift),
774 linesize,
775 sl->non_zero_count_cache + p * 5 * 8);
776 else
777 h->h264dsp.h264_idct_add16(dest_y, block_offset,
778 sl->mb + (p * 256 << pixel_shift),
779 linesize,
780 sl->non_zero_count_cache + p * 5 * 8);
781 }
782 }
783 }
784 }
785
786 #define BITS 8
787 #define SIMPLE 1
788 #include "h264_mb_template.c"
789
790 #undef BITS
791 #define BITS 16
792 #include "h264_mb_template.c"
793
794 #undef SIMPLE
795 #define SIMPLE 0
796 #include "h264_mb_template.c"
797
798 void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
799 {
800 const int mb_xy = sl->mb_xy;
801 const int mb_type = h->cur_pic.mb_type[mb_xy];
802 int is_complex = CONFIG_SMALL || sl->is_complex ||
803 IS_INTRA_PCM(mb_type) || sl->qscale == 0;
804
805 if (CHROMA444(h)) {
806 if (is_complex || h->pixel_shift)
807 hl_decode_mb_444_complex(h, sl);
808 else
809 hl_decode_mb_444_simple_8(h, sl);
810 } else if (is_complex) {
811 hl_decode_mb_complex(h, sl);
812 } else if (h->pixel_shift) {
813 hl_decode_mb_simple_16(h, sl);
814 } else
815 hl_decode_mb_simple_8(h, sl);
816 }
Modern FFMPEG