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avformat/mpeg: demux ivtv captions
[ffmpeg.git] / libavcodec / h264_mb.c
blob6083f7ad84f5321757ab539d00913af31e96d1d8
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 FFmpeg.
6 *
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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 "rectangle.h"
38 #include "threadframe.h"
39
40 static inline int get_lowest_part_list_y(H264SliceContext *sl,
41 int n, int height, int y_offset, int list)
42 {
43 int raw_my = sl->mv_cache[list][scan8[n]][1];
44 int filter_height_down = (raw_my & 3) ? 3 : 0;
45 int full_my = (raw_my >> 2) + y_offset;
46 int bottom = full_my + filter_height_down + height;
47
48 av_assert2(height >= 0);
49
50 return FFMAX(0, bottom);
51 }
52
53 static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
54 int16_t refs[2][48], int n,
55 int height, int y_offset, int list0,
56 int list1, int *nrefs)
57 {
58 int my;
59
60 y_offset += 16 * (sl->mb_y >> MB_FIELD(sl));
61
62 if (list0) {
63 int ref_n = sl->ref_cache[0][scan8[n]];
64 H264Ref *ref = &sl->ref_list[0][ref_n];
65
66 // Error resilience puts the current picture in the ref list.
67 // Don't try to wait on these as it will cause a deadlock.
68 // Fields can wait on each other, though.
69 if (ref->parent->tf.progress != h->cur_pic.tf.progress ||
70 (ref->reference & 3) != h->picture_structure) {
71 my = get_lowest_part_list_y(sl, n, height, y_offset, 0);
72 if (refs[0][ref_n] < 0)
73 nrefs[0] += 1;
74 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
75 }
76 }
77
78 if (list1) {
79 int ref_n = sl->ref_cache[1][scan8[n]];
80 H264Ref *ref = &sl->ref_list[1][ref_n];
81
82 if (ref->parent->tf.progress != h->cur_pic.tf.progress ||
83 (ref->reference & 3) != h->picture_structure) {
84 my = get_lowest_part_list_y(sl, n, height, y_offset, 1);
85 if (refs[1][ref_n] < 0)
86 nrefs[1] += 1;
87 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
88 }
89 }
90 }
91
92 /**
93 * Wait until all reference frames are available for MC operations.
94 *
95 * @param h the H.264 context
96 */
97 static void await_references(const H264Context *h, H264SliceContext *sl)
98 {
99 const int mb_xy = sl->mb_xy;
100 const int mb_type = h->cur_pic.mb_type[mb_xy];
101 int16_t refs[2][48];
102 int nrefs[2] = { 0 };
103 int ref, list;
104
105 memset(refs, -1, sizeof(refs));
106
107 if (IS_16X16(mb_type)) {
108 get_lowest_part_y(h, sl, refs, 0, 16, 0,
109 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
110 } else if (IS_16X8(mb_type)) {
111 get_lowest_part_y(h, sl, refs, 0, 8, 0,
112 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
113 get_lowest_part_y(h, sl, refs, 8, 8, 8,
114 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
115 } else if (IS_8X16(mb_type)) {
116 get_lowest_part_y(h, sl, refs, 0, 16, 0,
117 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
118 get_lowest_part_y(h, sl, refs, 4, 16, 0,
119 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
120 } else {
121 int i;
122
123 av_assert2(IS_8X8(mb_type));
124
125 for (i = 0; i < 4; i++) {
126 const int sub_mb_type = sl->sub_mb_type[i];
127 const int n = 4 * i;
128 int y_offset = (i & 2) << 2;
129
130 if (IS_SUB_8X8(sub_mb_type)) {
131 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
132 IS_DIR(sub_mb_type, 0, 0),
133 IS_DIR(sub_mb_type, 0, 1),
134 nrefs);
135 } else if (IS_SUB_8X4(sub_mb_type)) {
136 get_lowest_part_y(h, sl, refs, n, 4, y_offset,
137 IS_DIR(sub_mb_type, 0, 0),
138 IS_DIR(sub_mb_type, 0, 1),
139 nrefs);
140 get_lowest_part_y(h, sl, refs, n + 2, 4, y_offset + 4,
141 IS_DIR(sub_mb_type, 0, 0),
142 IS_DIR(sub_mb_type, 0, 1),
143 nrefs);
144 } else if (IS_SUB_4X8(sub_mb_type)) {
145 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
146 IS_DIR(sub_mb_type, 0, 0),
147 IS_DIR(sub_mb_type, 0, 1),
148 nrefs);
149 get_lowest_part_y(h, sl, refs, n + 1, 8, y_offset,
150 IS_DIR(sub_mb_type, 0, 0),
151 IS_DIR(sub_mb_type, 0, 1),
152 nrefs);
153 } else {
154 int j;
155 av_assert2(IS_SUB_4X4(sub_mb_type));
156 for (j = 0; j < 4; j++) {
157 int sub_y_offset = y_offset + 2 * (j & 2);
158 get_lowest_part_y(h, sl, refs, n + j, 4, sub_y_offset,
159 IS_DIR(sub_mb_type, 0, 0),
160 IS_DIR(sub_mb_type, 0, 1),
161 nrefs);
162 }
163 }
164 }
165 }
166
167 for (list = sl->list_count - 1; list >= 0; list--)
168 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
169 int row = refs[list][ref];
170 if (row >= 0) {
171 H264Ref *ref_pic = &sl->ref_list[list][ref];
172 int ref_field = ref_pic->reference - 1;
173 int ref_field_picture = ref_pic->parent->field_picture;
174 int pic_height = 16 * h->mb_height >> ref_field_picture;
175
176 row <<= MB_MBAFF(sl);
177 nrefs[list]--;
178
179 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
180 av_assert2((ref_pic->parent->reference & 3) == 3);
181 ff_thread_await_progress(&ref_pic->parent->tf,
182 FFMIN((row >> 1) - !(row & 1),
183 pic_height - 1),
184 1);
185 ff_thread_await_progress(&ref_pic->parent->tf,
186 FFMIN((row >> 1), pic_height - 1),
187 0);
188 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
189 ff_thread_await_progress(&ref_pic->parent->tf,
190 FFMIN(row * 2 + ref_field,
191 pic_height - 1),
192 0);
193 } else if (FIELD_PICTURE(h)) {
194 ff_thread_await_progress(&ref_pic->parent->tf,
195 FFMIN(row, pic_height - 1),
196 ref_field);
197 } else {
198 ff_thread_await_progress(&ref_pic->parent->tf,
199 FFMIN(row, pic_height - 1),
200 0);
201 }
202 }
203 }
204 }
205
206 static av_always_inline void mc_dir_part(const H264Context *h, H264SliceContext *sl,
207 H264Ref *pic,
208 int n, int square, int height,
209 int delta, int list,
210 uint8_t *dest_y, uint8_t *dest_cb,
211 uint8_t *dest_cr,
212 int src_x_offset, int src_y_offset,
213 const qpel_mc_func *qpix_op,
214 h264_chroma_mc_func chroma_op,
215 int pixel_shift, int chroma_idc)
216 {
217 const int mx = sl->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
218 int my = sl->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
219 const int luma_xy = (mx & 3) + ((my & 3) << 2);
220 ptrdiff_t offset = (mx >> 2) * (1 << pixel_shift) + (my >> 2) * sl->mb_linesize;
221 uint8_t *src_y = pic->data[0] + offset;
222 uint8_t *src_cb, *src_cr;
223 int extra_width = 0;
224 int extra_height = 0;
225 int emu = 0;
226 const int full_mx = mx >> 2;
227 const int full_my = my >> 2;
228 const int pic_width = 16 * h->mb_width;
229 const int pic_height = 16 * h->mb_height >> MB_FIELD(sl);
230 int ysh;
231
232 if (mx & 7)
233 extra_width -= 3;
234 if (my & 7)
235 extra_height -= 3;
236
237 if (full_mx < 0 - extra_width ||
238 full_my < 0 - extra_height ||
239 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
240 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
241 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
242 src_y - (2 << pixel_shift) - 2 * sl->mb_linesize,
243 sl->mb_linesize, sl->mb_linesize,
244 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
245 full_my - 2, pic_width, pic_height);
246 src_y = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
247 emu = 1;
248 }
249
250 qpix_op[luma_xy](dest_y, src_y, sl->mb_linesize); // FIXME try variable height perhaps?
251 if (!square)
252 qpix_op[luma_xy](dest_y + delta, src_y + delta, sl->mb_linesize);
253
254 if (CONFIG_GRAY && h->flags & AV_CODEC_FLAG_GRAY)
255 return;
256
257 if (chroma_idc == 3 /* yuv444 */) {
258 src_cb = pic->data[1] + offset;
259 if (emu) {
260 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
261 src_cb - (2 << pixel_shift) - 2 * sl->mb_linesize,
262 sl->mb_linesize, sl->mb_linesize,
263 16 + 5, 16 + 5 /*FIXME*/,
264 full_mx - 2, full_my - 2,
265 pic_width, pic_height);
266 src_cb = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
267 }
268 qpix_op[luma_xy](dest_cb, src_cb, sl->mb_linesize); // FIXME try variable height perhaps?
269 if (!square)
270 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, sl->mb_linesize);
271
272 src_cr = pic->data[2] + offset;
273 if (emu) {
274 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
275 src_cr - (2 << pixel_shift) - 2 * sl->mb_linesize,
276 sl->mb_linesize, sl->mb_linesize,
277 16 + 5, 16 + 5 /*FIXME*/,
278 full_mx - 2, full_my - 2,
279 pic_width, pic_height);
280 src_cr = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
281 }
282 qpix_op[luma_xy](dest_cr, src_cr, sl->mb_linesize); // FIXME try variable height perhaps?
283 if (!square)
284 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, sl->mb_linesize);
285 return;
286 }
287
288 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
289 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(sl)) {
290 // chroma offset when predicting from a field of opposite parity
291 my += 2 * ((sl->mb_y & 1) - (pic->reference - 1));
292 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
293 }
294
295 src_cb = pic->data[1] + ((mx >> 3) * (1 << pixel_shift)) +
296 (my >> ysh) * sl->mb_uvlinesize;
297 src_cr = pic->data[2] + ((mx >> 3) * (1 << pixel_shift)) +
298 (my >> ysh) * sl->mb_uvlinesize;
299
300 if (emu) {
301 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cb,
302 sl->mb_uvlinesize, sl->mb_uvlinesize,
303 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
304 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
305 src_cb = sl->edge_emu_buffer;
306 }
307 chroma_op(dest_cb, src_cb, sl->mb_uvlinesize,
308 height >> (chroma_idc == 1 /* yuv420 */),
309 mx & 7, ((unsigned)my << (chroma_idc == 2 /* yuv422 */)) & 7);
310
311 if (emu) {
312 h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cr,
313 sl->mb_uvlinesize, sl->mb_uvlinesize,
314 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
315 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
316 src_cr = sl->edge_emu_buffer;
317 }
318 chroma_op(dest_cr, src_cr, sl->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
319 mx & 7, ((unsigned)my << (chroma_idc == 2 /* yuv422 */)) & 7);
320 }
321
322 static av_always_inline void mc_part_std(const H264Context *h, H264SliceContext *sl,
323 int n, int square,
324 int height, int delta,
325 uint8_t *dest_y, uint8_t *dest_cb,
326 uint8_t *dest_cr,
327 int x_offset, int y_offset,
328 const qpel_mc_func *qpix_put,
329 h264_chroma_mc_func chroma_put,
330 const qpel_mc_func *qpix_avg,
331 h264_chroma_mc_func chroma_avg,
332 int list0, int list1,
333 int pixel_shift, int chroma_idc)
334 {
335 const qpel_mc_func *qpix_op = qpix_put;
336 h264_chroma_mc_func chroma_op = chroma_put;
337
338 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
339 if (chroma_idc == 3 /* yuv444 */) {
340 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
341 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
342 } else if (chroma_idc == 2 /* yuv422 */) {
343 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
344 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
345 } else { /* yuv420 */
346 dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
347 dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
348 }
349 x_offset += 8 * sl->mb_x;
350 y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
351
352 if (list0) {
353 H264Ref *ref = &sl->ref_list[0][sl->ref_cache[0][scan8[n]]];
354 mc_dir_part(h, sl, ref, n, square, height, delta, 0,
355 dest_y, dest_cb, dest_cr, x_offset, y_offset,
356 qpix_op, chroma_op, pixel_shift, chroma_idc);
357
358 qpix_op = qpix_avg;
359 chroma_op = chroma_avg;
360 }
361
362 if (list1) {
363 H264Ref *ref = &sl->ref_list[1][sl->ref_cache[1][scan8[n]]];
364 mc_dir_part(h, sl, ref, n, square, height, delta, 1,
365 dest_y, dest_cb, dest_cr, x_offset, y_offset,
366 qpix_op, chroma_op, pixel_shift, chroma_idc);
367 }
368 }
369
370 static av_always_inline void mc_part_weighted(const H264Context *h, H264SliceContext *sl,
371 int n, int square,
372 int height, int delta,
373 uint8_t *dest_y, uint8_t *dest_cb,
374 uint8_t *dest_cr,
375 int x_offset, int y_offset,
376 const qpel_mc_func *qpix_put,
377 h264_chroma_mc_func chroma_put,
378 h264_weight_func luma_weight_op,
379 h264_weight_func chroma_weight_op,
380 h264_biweight_func luma_weight_avg,
381 h264_biweight_func chroma_weight_avg,
382 int list0, int list1,
383 int pixel_shift, int chroma_idc)
384 {
385 int chroma_height;
386
387 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
388 if (chroma_idc == 3 /* yuv444 */) {
389 chroma_height = height;
390 chroma_weight_avg = luma_weight_avg;
391 chroma_weight_op = luma_weight_op;
392 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
393 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
394 } else if (chroma_idc == 2 /* yuv422 */) {
395 chroma_height = height;
396 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
397 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
398 } else { /* yuv420 */
399 chroma_height = height >> 1;
400 dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
401 dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
402 }
403 x_offset += 8 * sl->mb_x;
404 y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
405
406 if (list0 && list1) {
407 /* don't optimize for luma-only case, since B-frames usually
408 * use implicit weights => chroma too. */
409 uint8_t *tmp_cb = sl->bipred_scratchpad;
410 uint8_t *tmp_cr = sl->bipred_scratchpad + (16 << pixel_shift);
411 uint8_t *tmp_y = sl->bipred_scratchpad + 16 * sl->mb_uvlinesize;
412 int refn0 = sl->ref_cache[0][scan8[n]];
413 int refn1 = sl->ref_cache[1][scan8[n]];
414
415 mc_dir_part(h, sl, &sl->ref_list[0][refn0], n, square, height, delta, 0,
416 dest_y, dest_cb, dest_cr,
417 x_offset, y_offset, qpix_put, chroma_put,
418 pixel_shift, chroma_idc);
419 mc_dir_part(h, sl, &sl->ref_list[1][refn1], n, square, height, delta, 1,
420 tmp_y, tmp_cb, tmp_cr,
421 x_offset, y_offset, qpix_put, chroma_put,
422 pixel_shift, chroma_idc);
423
424 if (sl->pwt.use_weight == 2) {
425 int weight0 = sl->pwt.implicit_weight[refn0][refn1][sl->mb_y & 1];
426 int weight1 = 64 - weight0;
427 luma_weight_avg(dest_y, tmp_y, sl->mb_linesize,
428 height, 5, weight0, weight1, 0);
429 if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
430 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize,
431 chroma_height, 5, weight0, weight1, 0);
432 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize,
433 chroma_height, 5, weight0, weight1, 0);
434 }
435 } else {
436 luma_weight_avg(dest_y, tmp_y, sl->mb_linesize, height,
437 sl->pwt.luma_log2_weight_denom,
438 sl->pwt.luma_weight[refn0][0][0],
439 sl->pwt.luma_weight[refn1][1][0],
440 sl->pwt.luma_weight[refn0][0][1] +
441 sl->pwt.luma_weight[refn1][1][1]);
442 if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
443 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize, chroma_height,
444 sl->pwt.chroma_log2_weight_denom,
445 sl->pwt.chroma_weight[refn0][0][0][0],
446 sl->pwt.chroma_weight[refn1][1][0][0],
447 sl->pwt.chroma_weight[refn0][0][0][1] +
448 sl->pwt.chroma_weight[refn1][1][0][1]);
449 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize, chroma_height,
450 sl->pwt.chroma_log2_weight_denom,
451 sl->pwt.chroma_weight[refn0][0][1][0],
452 sl->pwt.chroma_weight[refn1][1][1][0],
453 sl->pwt.chroma_weight[refn0][0][1][1] +
454 sl->pwt.chroma_weight[refn1][1][1][1]);
455 }
456 }
457 } else {
458 int list = list1 ? 1 : 0;
459 int refn = sl->ref_cache[list][scan8[n]];
460 H264Ref *ref = &sl->ref_list[list][refn];
461 mc_dir_part(h, sl, ref, n, square, height, delta, list,
462 dest_y, dest_cb, dest_cr, x_offset, y_offset,
463 qpix_put, chroma_put, pixel_shift, chroma_idc);
464
465 luma_weight_op(dest_y, sl->mb_linesize, height,
466 sl->pwt.luma_log2_weight_denom,
467 sl->pwt.luma_weight[refn][list][0],
468 sl->pwt.luma_weight[refn][list][1]);
469 if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
470 if (sl->pwt.use_weight_chroma) {
471 chroma_weight_op(dest_cb, sl->mb_uvlinesize, chroma_height,
472 sl->pwt.chroma_log2_weight_denom,
473 sl->pwt.chroma_weight[refn][list][0][0],
474 sl->pwt.chroma_weight[refn][list][0][1]);
475 chroma_weight_op(dest_cr, sl->mb_uvlinesize, chroma_height,
476 sl->pwt.chroma_log2_weight_denom,
477 sl->pwt.chroma_weight[refn][list][1][0],
478 sl->pwt.chroma_weight[refn][list][1][1]);
479 }
480 }
481 }
482 }
483
484 static av_always_inline void prefetch_motion(const H264Context *h, H264SliceContext *sl,
485 int list, int pixel_shift,
486 int chroma_idc)
487 {
488 /* fetch pixels for estimated mv 4 macroblocks ahead
489 * optimized for 64byte cache lines */
490 const int refn = sl->ref_cache[list][scan8[0]];
491 if (refn >= 0) {
492 const int mx = (sl->mv_cache[list][scan8[0]][0] >> 2) + 16 * sl->mb_x + 8;
493 const int my = (sl->mv_cache[list][scan8[0]][1] >> 2) + 16 * sl->mb_y;
494 uint8_t **src = sl->ref_list[list][refn].data;
495 int off = mx * (1<< pixel_shift) +
496 (my + (sl->mb_x & 3) * 4) * sl->mb_linesize +
497 (64 << pixel_shift);
498 h->vdsp.prefetch(src[0] + off, sl->linesize, 4);
499 if (chroma_idc == 3 /* yuv444 */) {
500 h->vdsp.prefetch(src[1] + off, sl->linesize, 4);
501 h->vdsp.prefetch(src[2] + off, sl->linesize, 4);
502 } else {
503 off= ((mx>>1)+64) * (1<<pixel_shift) + ((my>>1) + (sl->mb_x&7))*sl->uvlinesize;
504 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
505 }
506 }
507 }
508
509 static av_always_inline void xchg_mb_border(const H264Context *h, H264SliceContext *sl,
510 uint8_t *src_y,
511 uint8_t *src_cb, uint8_t *src_cr,
512 int linesize, int uvlinesize,
513 int xchg, int chroma444,
514 int simple, int pixel_shift)
515 {
516 int deblock_topleft;
517 int deblock_top;
518 int top_idx = 1;
519 uint8_t *top_border_m1;
520 uint8_t *top_border;
521
522 if (!simple && FRAME_MBAFF(h)) {
523 if (sl->mb_y & 1) {
524 if (!MB_MBAFF(sl))
525 return;
526 } else {
527 top_idx = MB_MBAFF(sl) ? 0 : 1;
528 }
529 }
530
531 if (sl->deblocking_filter == 2) {
532 deblock_topleft = h->slice_table[sl->mb_xy - 1 - (h->mb_stride << MB_FIELD(sl))] == sl->slice_num;
533 deblock_top = sl->top_type;
534 } else {
535 deblock_topleft = (sl->mb_x > 0);
536 deblock_top = (sl->mb_y > !!MB_FIELD(sl));
537 }
538
539 src_y -= linesize + 1 + pixel_shift;
540 src_cb -= uvlinesize + 1 + pixel_shift;
541 src_cr -= uvlinesize + 1 + pixel_shift;
542
543 top_border_m1 = sl->top_borders[top_idx][sl->mb_x - 1];
544 top_border = sl->top_borders[top_idx][sl->mb_x];
545
546 #define XCHG(a, b, xchg) \
547 if (pixel_shift) { \
548 if (xchg) { \
549 AV_SWAP64(b + 0, a + 0); \
550 AV_SWAP64(b + 8, a + 8); \
551 } else { \
552 AV_COPY128(b, a); \
553 } \
554 } else if (xchg) \
555 AV_SWAP64(b, a); \
556 else \
557 AV_COPY64(b, a);
558
559 if (deblock_top) {
560 if (deblock_topleft) {
561 XCHG(top_border_m1 + (8 << pixel_shift),
562 src_y - (7 << pixel_shift), 1);
563 }
564 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
565 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
566 if (sl->mb_x + 1 < h->mb_width) {
567 XCHG(sl->top_borders[top_idx][sl->mb_x + 1],
568 src_y + (17 << pixel_shift), 1);
569 }
570 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
571 if (chroma444) {
572 if (deblock_topleft) {
573 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
574 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
575 }
576 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
577 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
578 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
579 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
580 if (sl->mb_x + 1 < h->mb_width) {
581 XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
582 XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
583 }
584 } else {
585 if (deblock_topleft) {
586 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
587 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
588 }
589 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
590 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
591 }
592 }
593 }
594 }
595
596 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
597 int index)
598 {
599 if (high_bit_depth) {
600 return AV_RN32A(((int32_t *)mb) + index);
601 } else
602 return AV_RN16A(mb + index);
603 }
604
605 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
606 int index, int value)
607 {
608 if (high_bit_depth) {
609 AV_WN32A(((int32_t *)mb) + index, value);
610 } else
611 AV_WN16A(mb + index, value);
612 }
613
614 static av_always_inline void hl_decode_mb_predict_luma(const H264Context *h,
615 H264SliceContext *sl,
616 int mb_type, int simple,
617 int transform_bypass,
618 int pixel_shift,
619 const int *block_offset,
620 int linesize,
621 uint8_t *dest_y, int p)
622 {
623 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
624 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
625 int i;
626 int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];
627 block_offset += 16 * p;
628 if (IS_INTRA4x4(mb_type)) {
629 if (IS_8x8DCT(mb_type)) {
630 if (transform_bypass) {
631 idct_dc_add =
632 idct_add = h->h264dsp.h264_add_pixels8_clear;
633 } else {
634 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
635 idct_add = h->h264dsp.h264_idct8_add;
636 }
637 for (i = 0; i < 16; i += 4) {
638 uint8_t *const ptr = dest_y + block_offset[i];
639 const int dir = sl->intra4x4_pred_mode_cache[scan8[i]];
640 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
641 if (h->x264_build < 151U) {
642 h->hpc.pred8x8l_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
643 } else
644 h->hpc.pred8x8l_filter_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift),
645 (sl-> topleft_samples_available << i) & 0x8000,
646 (sl->topright_samples_available << i) & 0x4000, linesize);
647 } else {
648 const int nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
649 h->hpc.pred8x8l[dir](ptr, (sl->topleft_samples_available << i) & 0x8000,
650 (sl->topright_samples_available << i) & 0x4000, linesize);
651 if (nnz) {
652 if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
653 idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
654 else
655 idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
656 }
657 }
658 }
659 } else {
660 if (transform_bypass) {
661 idct_dc_add =
662 idct_add = h->h264dsp.h264_add_pixels4_clear;
663 } else {
664 idct_dc_add = h->h264dsp.h264_idct_dc_add;
665 idct_add = h->h264dsp.h264_idct_add;
666 }
667 for (i = 0; i < 16; i++) {
668 uint8_t *const ptr = dest_y + block_offset[i];
669 const int dir = sl->intra4x4_pred_mode_cache[scan8[i]];
670
671 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
672 h->hpc.pred4x4_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
673 } else {
674 uint8_t *topright;
675 int nnz, tr;
676 uint64_t tr_high;
677 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
678 const int topright_avail = (sl->topright_samples_available << i) & 0x8000;
679 av_assert2(sl->mb_y || linesize <= block_offset[i]);
680 if (!topright_avail) {
681 if (pixel_shift) {
682 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
683 topright = (uint8_t *)&tr_high;
684 } else {
685 tr = ptr[3 - linesize] * 0x01010101u;
686 topright = (uint8_t *)&tr;
687 }
688 } else
689 topright = ptr + (4 << pixel_shift) - linesize;
690 } else
691 topright = NULL;
692
693 h->hpc.pred4x4[dir](ptr, topright, linesize);
694 nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
695 if (nnz) {
696 if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
697 idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
698 else
699 idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
700 }
701 }
702 }
703 }
704 } else {
705 h->hpc.pred16x16[sl->intra16x16_pred_mode](dest_y, linesize);
706 if (sl->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
707 if (!transform_bypass)
708 h->h264dsp.h264_luma_dc_dequant_idct(sl->mb + (p * 256 << pixel_shift),
709 sl->mb_luma_dc[p],
710 h->ps.pps->dequant4_coeff[p][qscale][0]);
711 else {
712 static const uint8_t dc_mapping[16] = {
713 0 * 16, 1 * 16, 4 * 16, 5 * 16,
714 2 * 16, 3 * 16, 6 * 16, 7 * 16,
715 8 * 16, 9 * 16, 12 * 16, 13 * 16,
716 10 * 16, 11 * 16, 14 * 16, 15 * 16
717 };
718 for (i = 0; i < 16; i++)
719 dctcoef_set(sl->mb + (p * 256 << pixel_shift),
720 pixel_shift, dc_mapping[i],
721 dctcoef_get(sl->mb_luma_dc[p],
722 pixel_shift, i));
723 }
724 }
725 }
726 }
727
728 static av_always_inline void hl_decode_mb_idct_luma(const H264Context *h, H264SliceContext *sl,
729 int mb_type, int simple,
730 int transform_bypass,
731 int pixel_shift,
732 const int *block_offset,
733 int linesize,
734 uint8_t *dest_y, int p)
735 {
736 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
737 int i;
738 block_offset += 16 * p;
739 if (!IS_INTRA4x4(mb_type)) {
740 if (IS_INTRA16x16(mb_type)) {
741 if (transform_bypass) {
742 if (h->ps.sps->profile_idc == 244 &&
743 (sl->intra16x16_pred_mode == VERT_PRED8x8 ||
744 sl->intra16x16_pred_mode == HOR_PRED8x8)) {
745 h->hpc.pred16x16_add[sl->intra16x16_pred_mode](dest_y, block_offset,
746 sl->mb + (p * 256 << pixel_shift),
747 linesize);
748 } else {
749 for (i = 0; i < 16; i++)
750 if (sl->non_zero_count_cache[scan8[i + p * 16]] ||
751 dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
752 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
753 sl->mb + (i * 16 + p * 256 << pixel_shift),
754 linesize);
755 }
756 } else {
757 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
758 sl->mb + (p * 256 << pixel_shift),
759 linesize,
760 sl->non_zero_count_cache + p * 5 * 8);
761 }
762 } else if (sl->cbp & 15) {
763 if (transform_bypass) {
764 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
765 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
766 : h->h264dsp.h264_add_pixels4_clear;
767 for (i = 0; i < 16; i += di)
768 if (sl->non_zero_count_cache[scan8[i + p * 16]])
769 idct_add(dest_y + block_offset[i],
770 sl->mb + (i * 16 + p * 256 << pixel_shift),
771 linesize);
772 } else {
773 if (IS_8x8DCT(mb_type))
774 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
775 sl->mb + (p * 256 << pixel_shift),
776 linesize,
777 sl->non_zero_count_cache + p * 5 * 8);
778 else
779 h->h264dsp.h264_idct_add16(dest_y, block_offset,
780 sl->mb + (p * 256 << pixel_shift),
781 linesize,
782 sl->non_zero_count_cache + p * 5 * 8);
783 }
784 }
785 }
786 }
787
788 #define BITS 8
789 #define SIMPLE 1
790 #include "h264_mb_template.c"
791
792 #undef BITS
793 #define BITS 16
794 #include "h264_mb_template.c"
795
796 #undef SIMPLE
797 #define SIMPLE 0
798 #include "h264_mb_template.c"
799
800 void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
801 {
802 const int mb_xy = sl->mb_xy;
803 const int mb_type = h->cur_pic.mb_type[mb_xy];
804 int is_complex = CONFIG_SMALL || sl->is_complex ||
805 IS_INTRA_PCM(mb_type) || sl->qscale == 0;
806
807 if (CHROMA444(h)) {
808 if (is_complex || h->pixel_shift)
809 hl_decode_mb_444_complex(h, sl);
810 else
811 hl_decode_mb_444_simple_8(h, sl);
812 } else if (is_complex) {
813 hl_decode_mb_complex(h, sl);
814 } else if (h->pixel_shift) {
815 hl_decode_mb_simple_16(h, sl);
816 } else
817 hl_decode_mb_simple_8(h, sl);
818 }