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"
39 static inline int get_lowest_part_list_y(H264Context *h, H264Picture *pic, int n,
40 int height, int y_offset, int list)
42 int raw_my = h->mv_cache[list][scan8[n]][1];
43 int filter_height_down = (raw_my & 3) ? 3 : 0;
44 int full_my = (raw_my >> 2) + y_offset;
45 int bottom = full_my + filter_height_down + height;
47 av_assert2(height >= 0);
49 return FFMAX(0, bottom);
52 static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n,
53 int height, int y_offset, int list0,
54 int list1, int *nrefs)
58 y_offset += 16 * (h->mb_y >> MB_FIELD(h));
61 int ref_n = h->ref_cache[0][scan8[n]];
62 H264Picture *ref = &h->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->tf.progress->data != h->cur_pic.tf.progress->data ||
68 (ref->reference & 3) != h->picture_structure) {
69 my = get_lowest_part_list_y(h, ref, 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 = h->ref_cache[1][scan8[n]];
78 H264Picture *ref = &h->ref_list[1][ref_n];
80 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||
81 (ref->reference & 3) != h->picture_structure) {
82 my = get_lowest_part_list_y(h, ref, 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(H264Context *h)
97 const int mb_xy = h->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, 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, refs, 0, 8, 0,
110 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
111 get_lowest_part_y(h, 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, refs, 0, 16, 0,
115 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
116 get_lowest_part_y(h, 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 = h->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, 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, 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, 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, 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, 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, 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 = h->list_count - 1; list >= 0; list--)
166 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
167 int row = refs[list][ref];
169 H264Picture *ref_pic = &h->ref_list[list][ref];
170 int ref_field = ref_pic->reference - 1;
171 int ref_field_picture = ref_pic->field_picture;
172 int pic_height = 16 * h->mb_height >> ref_field_picture;
177 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
178 ff_thread_await_progress(&ref_pic->tf,
179 FFMIN((row >> 1) - !(row & 1),
182 ff_thread_await_progress(&ref_pic->tf,
183 FFMIN((row >> 1), pic_height - 1),
185 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
186 ff_thread_await_progress(&ref_pic->tf,
187 FFMIN(row * 2 + ref_field,
190 } else if (FIELD_PICTURE(h)) {
191 ff_thread_await_progress(&ref_pic->tf,
192 FFMIN(row, pic_height - 1),
195 ff_thread_await_progress(&ref_pic->tf,
196 FFMIN(row, pic_height - 1),
203 static av_always_inline void mc_dir_part(H264Context *h, H264Picture *pic,
204 int n, int square, int height,
206 uint8_t *dest_y, uint8_t *dest_cb,
208 int src_x_offset, int src_y_offset,
209 qpel_mc_func *qpix_op,
210 h264_chroma_mc_func chroma_op,
211 int pixel_shift, int chroma_idc)
213 const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
214 int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
215 const int luma_xy = (mx & 3) + ((my & 3) << 2);
216 ptrdiff_t offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;
217 uint8_t *src_y = pic->f.data[0] + offset;
218 uint8_t *src_cb, *src_cr;
220 int extra_height = 0;
222 const int full_mx = mx >> 2;
223 const int full_my = my >> 2;
224 const int pic_width = 16 * h->mb_width;
225 const int pic_height = 16 * h->mb_height >> MB_FIELD(h);
233 if (full_mx < 0 - extra_width ||
234 full_my < 0 - extra_height ||
235 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
236 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
237 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
238 src_y - (2 << pixel_shift) - 2 * h->mb_linesize,
239 h->mb_linesize, h->mb_linesize,
240 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
241 full_my - 2, pic_width, pic_height);
242 src_y = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
246 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?
248 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
250 if (CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY)
253 if (chroma_idc == 3 /* yuv444 */) {
254 src_cb = pic->f.data[1] + offset;
256 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
257 src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,
258 h->mb_linesize, h->mb_linesize,
259 16 + 5, 16 + 5 /*FIXME*/,
260 full_mx - 2, full_my - 2,
261 pic_width, pic_height);
262 src_cb = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
264 qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?
266 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);
268 src_cr = pic->f.data[2] + offset;
270 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
271 src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,
272 h->mb_linesize, h->mb_linesize,
273 16 + 5, 16 + 5 /*FIXME*/,
274 full_mx - 2, full_my - 2,
275 pic_width, pic_height);
276 src_cr = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
278 qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?
280 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);
284 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
285 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(h)) {
286 // chroma offset when predicting from a field of opposite parity
287 my += 2 * ((h->mb_y & 1) - (pic->reference - 1));
288 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
291 src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +
292 (my >> ysh) * h->mb_uvlinesize;
293 src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +
294 (my >> ysh) * h->mb_uvlinesize;
297 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb,
298 h->mb_uvlinesize, h->mb_uvlinesize,
299 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
300 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
301 src_cb = h->edge_emu_buffer;
303 chroma_op(dest_cb, src_cb, h->mb_uvlinesize,
304 height >> (chroma_idc == 1 /* yuv420 */),
305 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
308 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr,
309 h->mb_uvlinesize, h->mb_uvlinesize,
310 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
311 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
312 src_cr = h->edge_emu_buffer;
314 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
315 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
318 static av_always_inline void mc_part_std(H264Context *h, int n, int square,
319 int height, int delta,
320 uint8_t *dest_y, uint8_t *dest_cb,
322 int x_offset, int y_offset,
323 qpel_mc_func *qpix_put,
324 h264_chroma_mc_func chroma_put,
325 qpel_mc_func *qpix_avg,
326 h264_chroma_mc_func chroma_avg,
327 int list0, int list1,
328 int pixel_shift, int chroma_idc)
330 qpel_mc_func *qpix_op = qpix_put;
331 h264_chroma_mc_func chroma_op = chroma_put;
333 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
334 if (chroma_idc == 3 /* yuv444 */) {
335 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
336 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
337 } else if (chroma_idc == 2 /* yuv422 */) {
338 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
339 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
340 } else { /* yuv420 */
341 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
342 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
344 x_offset += 8 * h->mb_x;
345 y_offset += 8 * (h->mb_y >> MB_FIELD(h));
348 H264Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];
349 mc_dir_part(h, ref, n, square, height, delta, 0,
350 dest_y, dest_cb, dest_cr, x_offset, y_offset,
351 qpix_op, chroma_op, pixel_shift, chroma_idc);
354 chroma_op = chroma_avg;
358 H264Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];
359 mc_dir_part(h, ref, n, square, height, delta, 1,
360 dest_y, dest_cb, dest_cr, x_offset, y_offset,
361 qpix_op, chroma_op, pixel_shift, chroma_idc);
365 static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,
366 int height, int delta,
367 uint8_t *dest_y, uint8_t *dest_cb,
369 int x_offset, int y_offset,
370 qpel_mc_func *qpix_put,
371 h264_chroma_mc_func chroma_put,
372 h264_weight_func luma_weight_op,
373 h264_weight_func chroma_weight_op,
374 h264_biweight_func luma_weight_avg,
375 h264_biweight_func chroma_weight_avg,
376 int list0, int list1,
377 int pixel_shift, int chroma_idc)
381 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
382 if (chroma_idc == 3 /* yuv444 */) {
383 chroma_height = height;
384 chroma_weight_avg = luma_weight_avg;
385 chroma_weight_op = luma_weight_op;
386 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
387 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
388 } else if (chroma_idc == 2 /* yuv422 */) {
389 chroma_height = height;
390 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
391 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
392 } else { /* yuv420 */
393 chroma_height = height >> 1;
394 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
395 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
397 x_offset += 8 * h->mb_x;
398 y_offset += 8 * (h->mb_y >> MB_FIELD(h));
400 if (list0 && list1) {
401 /* don't optimize for luma-only case, since B-frames usually
402 * use implicit weights => chroma too. */
403 uint8_t *tmp_cb = h->bipred_scratchpad;
404 uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);
405 uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize;
406 int refn0 = h->ref_cache[0][scan8[n]];
407 int refn1 = h->ref_cache[1][scan8[n]];
409 mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,
410 dest_y, dest_cb, dest_cr,
411 x_offset, y_offset, qpix_put, chroma_put,
412 pixel_shift, chroma_idc);
413 mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,
414 tmp_y, tmp_cb, tmp_cr,
415 x_offset, y_offset, qpix_put, chroma_put,
416 pixel_shift, chroma_idc);
418 if (h->use_weight == 2) {
419 int weight0 = h->implicit_weight[refn0][refn1][h->mb_y & 1];
420 int weight1 = 64 - weight0;
421 luma_weight_avg(dest_y, tmp_y, h->mb_linesize,
422 height, 5, weight0, weight1, 0);
423 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,
424 chroma_height, 5, weight0, weight1, 0);
425 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,
426 chroma_height, 5, weight0, weight1, 0);
428 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,
429 h->luma_log2_weight_denom,
430 h->luma_weight[refn0][0][0],
431 h->luma_weight[refn1][1][0],
432 h->luma_weight[refn0][0][1] +
433 h->luma_weight[refn1][1][1]);
434 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,
435 h->chroma_log2_weight_denom,
436 h->chroma_weight[refn0][0][0][0],
437 h->chroma_weight[refn1][1][0][0],
438 h->chroma_weight[refn0][0][0][1] +
439 h->chroma_weight[refn1][1][0][1]);
440 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,
441 h->chroma_log2_weight_denom,
442 h->chroma_weight[refn0][0][1][0],
443 h->chroma_weight[refn1][1][1][0],
444 h->chroma_weight[refn0][0][1][1] +
445 h->chroma_weight[refn1][1][1][1]);
448 int list = list1 ? 1 : 0;
449 int refn = h->ref_cache[list][scan8[n]];
450 H264Picture *ref = &h->ref_list[list][refn];
451 mc_dir_part(h, ref, n, square, height, delta, list,
452 dest_y, dest_cb, dest_cr, x_offset, y_offset,
453 qpix_put, chroma_put, pixel_shift, chroma_idc);
455 luma_weight_op(dest_y, h->mb_linesize, height,
456 h->luma_log2_weight_denom,
457 h->luma_weight[refn][list][0],
458 h->luma_weight[refn][list][1]);
459 if (h->use_weight_chroma) {
460 chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,
461 h->chroma_log2_weight_denom,
462 h->chroma_weight[refn][list][0][0],
463 h->chroma_weight[refn][list][0][1]);
464 chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,
465 h->chroma_log2_weight_denom,
466 h->chroma_weight[refn][list][1][0],
467 h->chroma_weight[refn][list][1][1]);
472 static av_always_inline void prefetch_motion(H264Context *h, int list,
473 int pixel_shift, int chroma_idc)
475 /* fetch pixels for estimated mv 4 macroblocks ahead
476 * optimized for 64byte cache lines */
477 const int refn = h->ref_cache[list][scan8[0]];
479 const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * h->mb_x + 8;
480 const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * h->mb_y;
481 uint8_t **src = h->ref_list[list][refn].f.data;
482 int off = (mx << pixel_shift) +
483 (my + (h->mb_x & 3) * 4) * h->mb_linesize +
485 h->vdsp.prefetch(src[0] + off, h->linesize, 4);
486 if (chroma_idc == 3 /* yuv444 */) {
487 h->vdsp.prefetch(src[1] + off, h->linesize, 4);
488 h->vdsp.prefetch(src[2] + off, h->linesize, 4);
490 off= (((mx>>1)+64)<<pixel_shift) + ((my>>1) + (h->mb_x&7))*h->uvlinesize;
491 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
496 static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
497 uint8_t *src_cb, uint8_t *src_cr,
498 int linesize, int uvlinesize,
499 int xchg, int chroma444,
500 int simple, int pixel_shift)
505 uint8_t *top_border_m1;
508 if (!simple && FRAME_MBAFF(h)) {
513 top_idx = MB_MBAFF(h) ? 0 : 1;
517 if (h->deblocking_filter == 2) {
518 deblock_topleft = h->slice_table[h->mb_xy - 1 - h->mb_stride] == h->slice_num;
519 deblock_top = h->top_type;
521 deblock_topleft = (h->mb_x > 0);
522 deblock_top = (h->mb_y > !!MB_FIELD(h));
525 src_y -= linesize + 1 + pixel_shift;
526 src_cb -= uvlinesize + 1 + pixel_shift;
527 src_cr -= uvlinesize + 1 + pixel_shift;
529 top_border_m1 = h->top_borders[top_idx][h->mb_x - 1];
530 top_border = h->top_borders[top_idx][h->mb_x];
532 #define XCHG(a, b, xchg) \
535 AV_SWAP64(b + 0, a + 0); \
536 AV_SWAP64(b + 8, a + 8); \
546 if (deblock_topleft) {
547 XCHG(top_border_m1 + (8 << pixel_shift),
548 src_y - (7 << pixel_shift), 1);
550 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
551 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
552 if (h->mb_x + 1 < h->mb_width) {
553 XCHG(h->top_borders[top_idx][h->mb_x + 1],
554 src_y + (17 << pixel_shift), 1);
556 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
558 if (deblock_topleft) {
559 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
560 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
562 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
563 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
564 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
565 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
566 if (h->mb_x + 1 < h->mb_width) {
567 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
568 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
571 if (deblock_topleft) {
572 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
573 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
575 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
576 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
582 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
585 if (high_bit_depth) {
586 return AV_RN32A(((int32_t *)mb) + index);
588 return AV_RN16A(mb + index);
591 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
592 int index, int value)
594 if (high_bit_depth) {
595 AV_WN32A(((int32_t *)mb) + index, value);
597 AV_WN16A(mb + index, value);
600 static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
601 int mb_type, int is_h264,
603 int transform_bypass,
607 uint8_t *dest_y, int p)
609 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
610 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
612 int qscale = p == 0 ? h->qscale : h->chroma_qp[p - 1];
613 block_offset += 16 * p;
614 if (IS_INTRA4x4(mb_type)) {
615 if (IS_8x8DCT(mb_type)) {
616 if (transform_bypass) {
618 idct_add = h->h264dsp.h264_add_pixels8_clear;
620 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
621 idct_add = h->h264dsp.h264_idct8_add;
623 for (i = 0; i < 16; i += 4) {
624 uint8_t *const ptr = dest_y + block_offset[i];
625 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
626 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
627 if (h->x264_build != -1) {
628 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
630 h->hpc.pred8x8l_filter_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift),
631 (h-> topleft_samples_available << i) & 0x8000,
632 (h->topright_samples_available << i) & 0x4000, linesize);
634 const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
635 h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
636 (h->topright_samples_available << i) & 0x4000, linesize);
638 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
639 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
641 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
646 if (transform_bypass) {
648 idct_add = h->h264dsp.h264_add_pixels4_clear;
650 idct_dc_add = h->h264dsp.h264_idct_dc_add;
651 idct_add = h->h264dsp.h264_idct_add;
653 for (i = 0; i < 16; i++) {
654 uint8_t *const ptr = dest_y + block_offset[i];
655 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
657 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
658 h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
663 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
664 const int topright_avail = (h->topright_samples_available << i) & 0x8000;
665 av_assert2(h->mb_y || linesize <= block_offset[i]);
666 if (!topright_avail) {
668 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
669 topright = (uint8_t *)&tr_high;
671 tr = ptr[3 - linesize] * 0x01010101u;
672 topright = (uint8_t *)&tr;
675 topright = ptr + (4 << pixel_shift) - linesize;
679 h->hpc.pred4x4[dir](ptr, topright, linesize);
680 nnz = h->non_zero_count_cache[scan8[i + p * 16]];
683 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
684 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
686 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
687 } else if (CONFIG_SVQ3_DECODER)
688 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
694 h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);
696 if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
697 if (!transform_bypass)
698 h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),
700 h->dequant4_coeff[p][qscale][0]);
702 static const uint8_t dc_mapping[16] = {
703 0 * 16, 1 * 16, 4 * 16, 5 * 16,
704 2 * 16, 3 * 16, 6 * 16, 7 * 16,
705 8 * 16, 9 * 16, 12 * 16, 13 * 16,
706 10 * 16, 11 * 16, 14 * 16, 15 * 16
708 for (i = 0; i < 16; i++)
709 dctcoef_set(h->mb + (p * 256 << pixel_shift),
710 pixel_shift, dc_mapping[i],
711 dctcoef_get(h->mb_luma_dc[p],
715 } else if (CONFIG_SVQ3_DECODER)
716 ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,
717 h->mb_luma_dc[p], qscale);
721 static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,
722 int is_h264, int simple,
723 int transform_bypass,
727 uint8_t *dest_y, int p)
729 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
731 block_offset += 16 * p;
732 if (!IS_INTRA4x4(mb_type)) {
734 if (IS_INTRA16x16(mb_type)) {
735 if (transform_bypass) {
736 if (h->sps.profile_idc == 244 &&
737 (h->intra16x16_pred_mode == VERT_PRED8x8 ||
738 h->intra16x16_pred_mode == HOR_PRED8x8)) {
739 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,
740 h->mb + (p * 256 << pixel_shift),
743 for (i = 0; i < 16; i++)
744 if (h->non_zero_count_cache[scan8[i + p * 16]] ||
745 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
746 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
747 h->mb + (i * 16 + p * 256 << pixel_shift),
751 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
752 h->mb + (p * 256 << pixel_shift),
754 h->non_zero_count_cache + p * 5 * 8);
756 } else if (h->cbp & 15) {
757 if (transform_bypass) {
758 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
759 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
760 : h->h264dsp.h264_add_pixels4_clear;
761 for (i = 0; i < 16; i += di)
762 if (h->non_zero_count_cache[scan8[i + p * 16]])
763 idct_add(dest_y + block_offset[i],
764 h->mb + (i * 16 + p * 256 << pixel_shift),
767 if (IS_8x8DCT(mb_type))
768 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
769 h->mb + (p * 256 << pixel_shift),
771 h->non_zero_count_cache + p * 5 * 8);
773 h->h264dsp.h264_idct_add16(dest_y, block_offset,
774 h->mb + (p * 256 << pixel_shift),
776 h->non_zero_count_cache + p * 5 * 8);
779 } else if (CONFIG_SVQ3_DECODER) {
780 for (i = 0; i < 16; i++)
781 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {
782 // FIXME benchmark weird rule, & below
783 uint8_t *const ptr = dest_y + block_offset[i];
784 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,
785 h->qscale, IS_INTRA(mb_type) ? 1 : 0);
793 #include "h264_mb_template.c"
797 #include "h264_mb_template.c"
801 #include "h264_mb_template.c"
803 void ff_h264_hl_decode_mb(H264Context *h)
805 const int mb_xy = h->mb_xy;
806 const int mb_type = h->cur_pic.mb_type[mb_xy];
807 int is_complex = CONFIG_SMALL || h->is_complex ||
808 IS_INTRA_PCM(mb_type) || h->qscale == 0;
811 if (is_complex || h->pixel_shift)
812 hl_decode_mb_444_complex(h);
814 hl_decode_mb_444_simple_8(h);
815 } else if (is_complex) {
816 hl_decode_mb_complex(h);
817 } else if (h->pixel_shift) {
818 hl_decode_mb_simple_16(h);
820 hl_decode_mb_simple_8(h);