2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
24 * H.264 / AVC / MPEG4 part10 macroblock decoding
31 #include "libavutil/common.h"
32 #include "libavutil/intreadwrite.h"
38 static inline int get_lowest_part_list_y(H264SliceContext *sl,
39 int n, int height, int y_offset, int list)
41 int raw_my = sl->mv_cache[list][scan8[n]][1];
42 int filter_height_down = (raw_my & 3) ? 3 : 0;
43 int full_my = (raw_my >> 2) + y_offset;
44 int bottom = full_my + filter_height_down + height;
46 av_assert2(height >= 0);
48 return FFMAX(0, bottom);
51 static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
52 int16_t refs[2][48], int n,
53 int height, int y_offset, int list0,
54 int list1, int *nrefs)
58 y_offset += 16 * (sl->mb_y >> MB_FIELD(sl));
61 int ref_n = sl->ref_cache[0][scan8[n]];
62 H264Ref *ref = &sl->ref_list[0][ref_n];
64 // Error resilience puts the current picture in the ref list.
65 // Don't try to wait on these as it will cause a deadlock.
66 // Fields can wait on each other, though.
67 if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
68 (ref->reference & 3) != h->picture_structure) {
69 my = get_lowest_part_list_y(sl, n, height, y_offset, 0);
70 if (refs[0][ref_n] < 0)
72 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
77 int ref_n = sl->ref_cache[1][scan8[n]];
78 H264Ref *ref = &sl->ref_list[1][ref_n];
80 if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
81 (ref->reference & 3) != h->picture_structure) {
82 my = get_lowest_part_list_y(sl, n, height, y_offset, 1);
83 if (refs[1][ref_n] < 0)
85 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
91 * Wait until all reference frames are available for MC operations.
93 * @param h the H264 context
95 static void await_references(const H264Context *h, H264SliceContext *sl)
97 const int mb_xy = sl->mb_xy;
98 const int mb_type = h->cur_pic.mb_type[mb_xy];
100 int nrefs[2] = { 0 };
103 memset(refs, -1, sizeof(refs));
105 if (IS_16X16(mb_type)) {
106 get_lowest_part_y(h, sl, refs, 0, 16, 0,
107 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
108 } else if (IS_16X8(mb_type)) {
109 get_lowest_part_y(h, sl, refs, 0, 8, 0,
110 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
111 get_lowest_part_y(h, sl, refs, 8, 8, 8,
112 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
113 } else if (IS_8X16(mb_type)) {
114 get_lowest_part_y(h, sl, refs, 0, 16, 0,
115 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
116 get_lowest_part_y(h, sl, refs, 4, 16, 0,
117 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
121 av_assert2(IS_8X8(mb_type));
123 for (i = 0; i < 4; i++) {
124 const int sub_mb_type = sl->sub_mb_type[i];
126 int y_offset = (i & 2) << 2;
128 if (IS_SUB_8X8(sub_mb_type)) {
129 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
130 IS_DIR(sub_mb_type, 0, 0),
131 IS_DIR(sub_mb_type, 0, 1),
133 } else if (IS_SUB_8X4(sub_mb_type)) {
134 get_lowest_part_y(h, sl, refs, n, 4, y_offset,
135 IS_DIR(sub_mb_type, 0, 0),
136 IS_DIR(sub_mb_type, 0, 1),
138 get_lowest_part_y(h, sl, refs, n + 2, 4, y_offset + 4,
139 IS_DIR(sub_mb_type, 0, 0),
140 IS_DIR(sub_mb_type, 0, 1),
142 } else if (IS_SUB_4X8(sub_mb_type)) {
143 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
144 IS_DIR(sub_mb_type, 0, 0),
145 IS_DIR(sub_mb_type, 0, 1),
147 get_lowest_part_y(h, sl, refs, n + 1, 8, y_offset,
148 IS_DIR(sub_mb_type, 0, 0),
149 IS_DIR(sub_mb_type, 0, 1),
153 av_assert2(IS_SUB_4X4(sub_mb_type));
154 for (j = 0; j < 4; j++) {
155 int sub_y_offset = y_offset + 2 * (j & 2);
156 get_lowest_part_y(h, sl, refs, n + j, 4, sub_y_offset,
157 IS_DIR(sub_mb_type, 0, 0),
158 IS_DIR(sub_mb_type, 0, 1),
165 for (list = sl->list_count - 1; list >= 0; list--)
166 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
167 int row = refs[list][ref];
169 H264Ref *ref_pic = &sl->ref_list[list][ref];
170 int ref_field = ref_pic->reference - 1;
171 int ref_field_picture = ref_pic->parent->field_picture;
172 int pic_height = 16 * h->mb_height >> ref_field_picture;
174 row <<= MB_MBAFF(sl);
177 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
178 av_assert2((ref_pic->parent->reference & 3) == 3);
179 ff_thread_await_progress(&ref_pic->parent->tf,
180 FFMIN((row >> 1) - !(row & 1),
183 ff_thread_await_progress(&ref_pic->parent->tf,
184 FFMIN((row >> 1), pic_height - 1),
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,
191 } else if (FIELD_PICTURE(h)) {
192 ff_thread_await_progress(&ref_pic->parent->tf,
193 FFMIN(row, pic_height - 1),
196 ff_thread_await_progress(&ref_pic->parent->tf,
197 FFMIN(row, pic_height - 1),
204 static av_always_inline void mc_dir_part(const H264Context *h, H264SliceContext *sl,
206 int n, int square, int height,
208 uint8_t *dest_y, uint8_t *dest_cb,
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)
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) * (1 << pixel_shift) + (my >> 2) * sl->mb_linesize;
219 uint8_t *src_y = pic->data[0] + offset;
220 uint8_t *src_cb, *src_cr;
222 int extra_height = 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);
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;
248 qpix_op[luma_xy](dest_y, src_y, sl->mb_linesize); // FIXME try variable height perhaps?
250 qpix_op[luma_xy](dest_y + delta, src_y + delta, sl->mb_linesize);
252 if (CONFIG_GRAY && h->flags & AV_CODEC_FLAG_GRAY)
255 if (chroma_idc == 3 /* yuv444 */) {
256 src_cb = pic->data[1] + offset;
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;
266 qpix_op[luma_xy](dest_cb, src_cb, sl->mb_linesize); // FIXME try variable height perhaps?
268 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, sl->mb_linesize);
270 src_cr = pic->data[2] + offset;
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;
280 qpix_op[luma_xy](dest_cr, src_cr, sl->mb_linesize); // FIXME try variable height perhaps?
282 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, sl->mb_linesize);
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);
293 src_cb = pic->data[1] + ((mx >> 3) * (1 << pixel_shift)) +
294 (my >> ysh) * sl->mb_uvlinesize;
295 src_cr = pic->data[2] + ((mx >> 3) * (1 << pixel_shift)) +
296 (my >> ysh) * sl->mb_uvlinesize;
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;
305 chroma_op(dest_cb, src_cb, sl->mb_uvlinesize,
306 height >> (chroma_idc == 1 /* yuv420 */),
307 mx & 7, ((unsigned)my << (chroma_idc == 2 /* yuv422 */)) & 7);
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;
316 chroma_op(dest_cr, src_cr, sl->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
317 mx & 7, ((unsigned)my << (chroma_idc == 2 /* yuv422 */)) & 7);
320 static av_always_inline void mc_part_std(const H264Context *h, H264SliceContext *sl,
322 int height, int delta,
323 uint8_t *dest_y, uint8_t *dest_cb,
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)
333 const qpel_mc_func *qpix_op = qpix_put;
334 h264_chroma_mc_func chroma_op = chroma_put;
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;
347 x_offset += 8 * sl->mb_x;
348 y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
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);
357 chroma_op = chroma_avg;
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);
368 static av_always_inline void mc_part_weighted(const H264Context *h, H264SliceContext *sl,
370 int height, int delta,
371 uint8_t *dest_y, uint8_t *dest_cb,
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)
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;
401 x_offset += 8 * sl->mb_x;
402 y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
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]];
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);
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 if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
428 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize,
429 chroma_height, 5, weight0, weight1, 0);
430 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize,
431 chroma_height, 5, weight0, weight1, 0);
434 luma_weight_avg(dest_y, tmp_y, sl->mb_linesize, height,
435 sl->pwt.luma_log2_weight_denom,
436 sl->pwt.luma_weight[refn0][0][0],
437 sl->pwt.luma_weight[refn1][1][0],
438 sl->pwt.luma_weight[refn0][0][1] +
439 sl->pwt.luma_weight[refn1][1][1]);
440 if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
441 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize, chroma_height,
442 sl->pwt.chroma_log2_weight_denom,
443 sl->pwt.chroma_weight[refn0][0][0][0],
444 sl->pwt.chroma_weight[refn1][1][0][0],
445 sl->pwt.chroma_weight[refn0][0][0][1] +
446 sl->pwt.chroma_weight[refn1][1][0][1]);
447 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize, chroma_height,
448 sl->pwt.chroma_log2_weight_denom,
449 sl->pwt.chroma_weight[refn0][0][1][0],
450 sl->pwt.chroma_weight[refn1][1][1][0],
451 sl->pwt.chroma_weight[refn0][0][1][1] +
452 sl->pwt.chroma_weight[refn1][1][1][1]);
456 int list = list1 ? 1 : 0;
457 int refn = sl->ref_cache[list][scan8[n]];
458 H264Ref *ref = &sl->ref_list[list][refn];
459 mc_dir_part(h, sl, ref, n, square, height, delta, list,
460 dest_y, dest_cb, dest_cr, x_offset, y_offset,
461 qpix_put, chroma_put, pixel_shift, chroma_idc);
463 luma_weight_op(dest_y, sl->mb_linesize, height,
464 sl->pwt.luma_log2_weight_denom,
465 sl->pwt.luma_weight[refn][list][0],
466 sl->pwt.luma_weight[refn][list][1]);
467 if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
468 if (sl->pwt.use_weight_chroma) {
469 chroma_weight_op(dest_cb, sl->mb_uvlinesize, chroma_height,
470 sl->pwt.chroma_log2_weight_denom,
471 sl->pwt.chroma_weight[refn][list][0][0],
472 sl->pwt.chroma_weight[refn][list][0][1]);
473 chroma_weight_op(dest_cr, sl->mb_uvlinesize, chroma_height,
474 sl->pwt.chroma_log2_weight_denom,
475 sl->pwt.chroma_weight[refn][list][1][0],
476 sl->pwt.chroma_weight[refn][list][1][1]);
482 static av_always_inline void prefetch_motion(const H264Context *h, H264SliceContext *sl,
483 int list, int pixel_shift,
486 /* fetch pixels for estimated mv 4 macroblocks ahead
487 * optimized for 64byte cache lines */
488 const int refn = sl->ref_cache[list][scan8[0]];
490 const int mx = (sl->mv_cache[list][scan8[0]][0] >> 2) + 16 * sl->mb_x + 8;
491 const int my = (sl->mv_cache[list][scan8[0]][1] >> 2) + 16 * sl->mb_y;
492 uint8_t **src = sl->ref_list[list][refn].data;
493 int off = mx * (1<< pixel_shift) +
494 (my + (sl->mb_x & 3) * 4) * sl->mb_linesize +
496 h->vdsp.prefetch(src[0] + off, sl->linesize, 4);
497 if (chroma_idc == 3 /* yuv444 */) {
498 h->vdsp.prefetch(src[1] + off, sl->linesize, 4);
499 h->vdsp.prefetch(src[2] + off, sl->linesize, 4);
501 off= ((mx>>1)+64) * (1<<pixel_shift) + ((my>>1) + (sl->mb_x&7))*sl->uvlinesize;
502 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
507 static av_always_inline void xchg_mb_border(const H264Context *h, H264SliceContext *sl,
509 uint8_t *src_cb, uint8_t *src_cr,
510 int linesize, int uvlinesize,
511 int xchg, int chroma444,
512 int simple, int pixel_shift)
517 uint8_t *top_border_m1;
520 if (!simple && FRAME_MBAFF(h)) {
525 top_idx = MB_MBAFF(sl) ? 0 : 1;
529 if (sl->deblocking_filter == 2) {
530 deblock_topleft = h->slice_table[sl->mb_xy - 1 - h->mb_stride] == sl->slice_num;
531 deblock_top = sl->top_type;
533 deblock_topleft = (sl->mb_x > 0);
534 deblock_top = (sl->mb_y > !!MB_FIELD(sl));
537 src_y -= linesize + 1 + pixel_shift;
538 src_cb -= uvlinesize + 1 + pixel_shift;
539 src_cr -= uvlinesize + 1 + pixel_shift;
541 top_border_m1 = sl->top_borders[top_idx][sl->mb_x - 1];
542 top_border = sl->top_borders[top_idx][sl->mb_x];
544 #define XCHG(a, b, xchg) \
547 AV_SWAP64(b + 0, a + 0); \
548 AV_SWAP64(b + 8, a + 8); \
558 if (deblock_topleft) {
559 XCHG(top_border_m1 + (8 << pixel_shift),
560 src_y - (7 << pixel_shift), 1);
562 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
563 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
564 if (sl->mb_x + 1 < h->mb_width) {
565 XCHG(sl->top_borders[top_idx][sl->mb_x + 1],
566 src_y + (17 << pixel_shift), 1);
568 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
570 if (deblock_topleft) {
571 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
572 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
574 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
575 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
576 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
577 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
578 if (sl->mb_x + 1 < h->mb_width) {
579 XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
580 XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
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);
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);
594 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
597 if (high_bit_depth) {
598 return AV_RN32A(((int32_t *)mb) + index);
600 return AV_RN16A(mb + index);
603 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
604 int index, int value)
606 if (high_bit_depth) {
607 AV_WN32A(((int32_t *)mb) + index, value);
609 AV_WN16A(mb + index, value);
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,
617 const int *block_offset,
619 uint8_t *dest_y, int p)
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);
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) {
630 idct_add = h->h264dsp.h264_add_pixels8_clear;
632 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
633 idct_add = h->h264dsp.h264_idct8_add;
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->sps.profile_idc == 244 && dir <= 1) {
639 if (h->x264_build != -1) {
640 h->hpc.pred8x8l_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
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);
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);
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);
653 idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
658 if (transform_bypass) {
660 idct_add = h->h264dsp.h264_add_pixels4_clear;
662 idct_dc_add = h->h264dsp.h264_idct_dc_add;
663 idct_add = h->h264dsp.h264_idct_add;
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]];
669 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
670 h->hpc.pred4x4_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
675 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
676 const int topright_avail = (sl->topright_samples_available << i) & 0x8000;
677 av_assert2(sl->mb_y || linesize <= block_offset[i]);
678 if (!topright_avail) {
680 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
681 topright = (uint8_t *)&tr_high;
683 tr = ptr[3 - linesize] * 0x01010101u;
684 topright = (uint8_t *)&tr;
687 topright = ptr + (4 << pixel_shift) - linesize;
691 h->hpc.pred4x4[dir](ptr, topright, linesize);
692 nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
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);
697 idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
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),
708 h->dequant4_coeff[p][qscale][0]);
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
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],
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,
730 const int *block_offset,
732 uint8_t *dest_y, int p)
734 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
736 block_offset += 16 * p;
737 if (!IS_INTRA4x4(mb_type)) {
738 if (IS_INTRA16x16(mb_type)) {
739 if (transform_bypass) {
740 if (h->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),
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),
755 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
756 sl->mb + (p * 256 << pixel_shift),
758 sl->non_zero_count_cache + p * 5 * 8);
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),
771 if (IS_8x8DCT(mb_type))
772 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
773 sl->mb + (p * 256 << pixel_shift),
775 sl->non_zero_count_cache + p * 5 * 8);
777 h->h264dsp.h264_idct_add16(dest_y, block_offset,
778 sl->mb + (p * 256 << pixel_shift),
780 sl->non_zero_count_cache + p * 5 * 8);
788 #include "h264_mb_template.c"
792 #include "h264_mb_template.c"
796 #include "h264_mb_template.c"
798 void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
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;
806 if (is_complex || h->pixel_shift)
807 hl_decode_mb_444_complex(h, sl);
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);
815 hl_decode_mb_simple_8(h, sl);