4 * Copyright (C) 2012 - 2013 Guillaume Martres
5 * Copyright (C) 2012 - 2013 Mickael Raulet
6 * Copyright (C) 2012 - 2013 Gildas Cocherel
7 * Copyright (C) 2012 - 2013 Wassim Hamidouche
9 * This file is part of Libav.
11 * Libav is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * Libav is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with Libav; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/attributes.h"
27 #include "libavutil/common.h"
28 #include "libavutil/display.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/md5.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/stereo3d.h"
36 #include "bytestream.h"
37 #include "cabac_functions.h"
41 const uint8_t ff_hevc_qpel_extra_before[4] = { 0, 3, 3, 2 };
42 const uint8_t ff_hevc_qpel_extra_after[4] = { 0, 3, 4, 4 };
43 const uint8_t ff_hevc_qpel_extra[4] = { 0, 6, 7, 6 };
45 static const uint8_t scan_1x1[1] = { 0 };
47 static const uint8_t horiz_scan2x2_x[4] = { 0, 1, 0, 1 };
49 static const uint8_t horiz_scan2x2_y[4] = { 0, 0, 1, 1 };
51 static const uint8_t horiz_scan4x4_x[16] = {
58 static const uint8_t horiz_scan4x4_y[16] = {
65 static const uint8_t horiz_scan8x8_inv[8][8] = {
66 { 0, 1, 2, 3, 16, 17, 18, 19, },
67 { 4, 5, 6, 7, 20, 21, 22, 23, },
68 { 8, 9, 10, 11, 24, 25, 26, 27, },
69 { 12, 13, 14, 15, 28, 29, 30, 31, },
70 { 32, 33, 34, 35, 48, 49, 50, 51, },
71 { 36, 37, 38, 39, 52, 53, 54, 55, },
72 { 40, 41, 42, 43, 56, 57, 58, 59, },
73 { 44, 45, 46, 47, 60, 61, 62, 63, },
76 static const uint8_t diag_scan2x2_x[4] = { 0, 0, 1, 1 };
78 static const uint8_t diag_scan2x2_y[4] = { 0, 1, 0, 1 };
80 static const uint8_t diag_scan2x2_inv[2][2] = {
85 const uint8_t ff_hevc_diag_scan4x4_x[16] = {
92 const uint8_t ff_hevc_diag_scan4x4_y[16] = {
99 static const uint8_t diag_scan4x4_inv[4][4] = {
106 const uint8_t ff_hevc_diag_scan8x8_x[64] = {
125 const uint8_t ff_hevc_diag_scan8x8_y[64] = {
144 static const uint8_t diag_scan8x8_inv[8][8] = {
145 { 0, 2, 5, 9, 14, 20, 27, 35, },
146 { 1, 4, 8, 13, 19, 26, 34, 42, },
147 { 3, 7, 12, 18, 25, 33, 41, 48, },
148 { 6, 11, 17, 24, 32, 40, 47, 53, },
149 { 10, 16, 23, 31, 39, 46, 52, 57, },
150 { 15, 22, 30, 38, 45, 51, 56, 60, },
151 { 21, 29, 37, 44, 50, 55, 59, 62, },
152 { 28, 36, 43, 49, 54, 58, 61, 63, },
156 * NOTE: Each function hls_foo correspond to the function foo in the
157 * specification (HLS stands for High Level Syntax).
164 /* free everything allocated by pic_arrays_init() */
165 static void pic_arrays_free(HEVCContext *s)
168 av_freep(&s->deblock);
170 av_freep(&s->skip_flag);
171 av_freep(&s->tab_ct_depth);
173 av_freep(&s->tab_ipm);
174 av_freep(&s->cbf_luma);
175 av_freep(&s->is_pcm);
177 av_freep(&s->qp_y_tab);
178 av_freep(&s->tab_slice_address);
179 av_freep(&s->filter_slice_edges);
181 av_freep(&s->horizontal_bs);
182 av_freep(&s->vertical_bs);
184 av_buffer_pool_uninit(&s->tab_mvf_pool);
185 av_buffer_pool_uninit(&s->rpl_tab_pool);
188 /* allocate arrays that depend on frame dimensions */
189 static int pic_arrays_init(HEVCContext *s, const HEVCSPS *sps)
191 int log2_min_cb_size = sps->log2_min_cb_size;
192 int width = sps->width;
193 int height = sps->height;
194 int pic_size_in_ctb = ((width >> log2_min_cb_size) + 1) *
195 ((height >> log2_min_cb_size) + 1);
196 int ctb_count = sps->ctb_width * sps->ctb_height;
197 int min_pu_size = sps->min_pu_width * sps->min_pu_height;
199 s->bs_width = width >> 3;
200 s->bs_height = height >> 3;
202 s->sao = av_mallocz_array(ctb_count, sizeof(*s->sao));
203 s->deblock = av_mallocz_array(ctb_count, sizeof(*s->deblock));
204 if (!s->sao || !s->deblock)
207 s->skip_flag = av_malloc(pic_size_in_ctb);
208 s->tab_ct_depth = av_malloc(sps->min_cb_height * sps->min_cb_width);
209 if (!s->skip_flag || !s->tab_ct_depth)
212 s->cbf_luma = av_malloc(sps->min_tb_width * sps->min_tb_height);
213 s->tab_ipm = av_mallocz(min_pu_size);
214 s->is_pcm = av_malloc(min_pu_size);
215 if (!s->tab_ipm || !s->cbf_luma || !s->is_pcm)
218 s->filter_slice_edges = av_malloc(ctb_count);
219 s->tab_slice_address = av_malloc(pic_size_in_ctb *
220 sizeof(*s->tab_slice_address));
221 s->qp_y_tab = av_malloc(pic_size_in_ctb *
222 sizeof(*s->qp_y_tab));
223 if (!s->qp_y_tab || !s->filter_slice_edges || !s->tab_slice_address)
226 s->horizontal_bs = av_mallocz(2 * s->bs_width * (s->bs_height + 1));
227 s->vertical_bs = av_mallocz(2 * s->bs_width * (s->bs_height + 1));
228 if (!s->horizontal_bs || !s->vertical_bs)
231 s->tab_mvf_pool = av_buffer_pool_init(min_pu_size * sizeof(MvField),
233 s->rpl_tab_pool = av_buffer_pool_init(ctb_count * sizeof(RefPicListTab),
235 if (!s->tab_mvf_pool || !s->rpl_tab_pool)
242 return AVERROR(ENOMEM);
245 static void pred_weight_table(HEVCContext *s, GetBitContext *gb)
249 uint8_t luma_weight_l0_flag[16];
250 uint8_t chroma_weight_l0_flag[16];
251 uint8_t luma_weight_l1_flag[16];
252 uint8_t chroma_weight_l1_flag[16];
254 s->sh.luma_log2_weight_denom = get_ue_golomb_long(gb);
255 if (s->sps->chroma_format_idc != 0) {
256 int delta = get_se_golomb(gb);
257 s->sh.chroma_log2_weight_denom = av_clip_c(s->sh.luma_log2_weight_denom + delta, 0, 7);
260 for (i = 0; i < s->sh.nb_refs[L0]; i++) {
261 luma_weight_l0_flag[i] = get_bits1(gb);
262 if (!luma_weight_l0_flag[i]) {
263 s->sh.luma_weight_l0[i] = 1 << s->sh.luma_log2_weight_denom;
264 s->sh.luma_offset_l0[i] = 0;
267 if (s->sps->chroma_format_idc != 0) { // FIXME: invert "if" and "for"
268 for (i = 0; i < s->sh.nb_refs[L0]; i++)
269 chroma_weight_l0_flag[i] = get_bits1(gb);
271 for (i = 0; i < s->sh.nb_refs[L0]; i++)
272 chroma_weight_l0_flag[i] = 0;
274 for (i = 0; i < s->sh.nb_refs[L0]; i++) {
275 if (luma_weight_l0_flag[i]) {
276 int delta_luma_weight_l0 = get_se_golomb(gb);
277 s->sh.luma_weight_l0[i] = (1 << s->sh.luma_log2_weight_denom) + delta_luma_weight_l0;
278 s->sh.luma_offset_l0[i] = get_se_golomb(gb);
280 if (chroma_weight_l0_flag[i]) {
281 for (j = 0; j < 2; j++) {
282 int delta_chroma_weight_l0 = get_se_golomb(gb);
283 int delta_chroma_offset_l0 = get_se_golomb(gb);
284 s->sh.chroma_weight_l0[i][j] = (1 << s->sh.chroma_log2_weight_denom) + delta_chroma_weight_l0;
285 s->sh.chroma_offset_l0[i][j] = av_clip_c((delta_chroma_offset_l0 - ((128 * s->sh.chroma_weight_l0[i][j])
286 >> s->sh.chroma_log2_weight_denom) + 128), -128, 127);
289 s->sh.chroma_weight_l0[i][0] = 1 << s->sh.chroma_log2_weight_denom;
290 s->sh.chroma_offset_l0[i][0] = 0;
291 s->sh.chroma_weight_l0[i][1] = 1 << s->sh.chroma_log2_weight_denom;
292 s->sh.chroma_offset_l0[i][1] = 0;
295 if (s->sh.slice_type == B_SLICE) {
296 for (i = 0; i < s->sh.nb_refs[L1]; i++) {
297 luma_weight_l1_flag[i] = get_bits1(gb);
298 if (!luma_weight_l1_flag[i]) {
299 s->sh.luma_weight_l1[i] = 1 << s->sh.luma_log2_weight_denom;
300 s->sh.luma_offset_l1[i] = 0;
303 if (s->sps->chroma_format_idc != 0) {
304 for (i = 0; i < s->sh.nb_refs[L1]; i++)
305 chroma_weight_l1_flag[i] = get_bits1(gb);
307 for (i = 0; i < s->sh.nb_refs[L1]; i++)
308 chroma_weight_l1_flag[i] = 0;
310 for (i = 0; i < s->sh.nb_refs[L1]; i++) {
311 if (luma_weight_l1_flag[i]) {
312 int delta_luma_weight_l1 = get_se_golomb(gb);
313 s->sh.luma_weight_l1[i] = (1 << s->sh.luma_log2_weight_denom) + delta_luma_weight_l1;
314 s->sh.luma_offset_l1[i] = get_se_golomb(gb);
316 if (chroma_weight_l1_flag[i]) {
317 for (j = 0; j < 2; j++) {
318 int delta_chroma_weight_l1 = get_se_golomb(gb);
319 int delta_chroma_offset_l1 = get_se_golomb(gb);
320 s->sh.chroma_weight_l1[i][j] = (1 << s->sh.chroma_log2_weight_denom) + delta_chroma_weight_l1;
321 s->sh.chroma_offset_l1[i][j] = av_clip_c((delta_chroma_offset_l1 - ((128 * s->sh.chroma_weight_l1[i][j])
322 >> s->sh.chroma_log2_weight_denom) + 128), -128, 127);
325 s->sh.chroma_weight_l1[i][0] = 1 << s->sh.chroma_log2_weight_denom;
326 s->sh.chroma_offset_l1[i][0] = 0;
327 s->sh.chroma_weight_l1[i][1] = 1 << s->sh.chroma_log2_weight_denom;
328 s->sh.chroma_offset_l1[i][1] = 0;
334 static int decode_lt_rps(HEVCContext *s, LongTermRPS *rps, GetBitContext *gb)
336 const HEVCSPS *sps = s->sps;
337 int max_poc_lsb = 1 << sps->log2_max_poc_lsb;
338 int prev_delta_msb = 0;
339 unsigned int nb_sps = 0, nb_sh;
343 if (!sps->long_term_ref_pics_present_flag)
346 if (sps->num_long_term_ref_pics_sps > 0)
347 nb_sps = get_ue_golomb_long(gb);
348 nb_sh = get_ue_golomb_long(gb);
350 if (nb_sh + nb_sps > FF_ARRAY_ELEMS(rps->poc))
351 return AVERROR_INVALIDDATA;
353 rps->nb_refs = nb_sh + nb_sps;
355 for (i = 0; i < rps->nb_refs; i++) {
356 uint8_t delta_poc_msb_present;
359 uint8_t lt_idx_sps = 0;
361 if (sps->num_long_term_ref_pics_sps > 1)
362 lt_idx_sps = get_bits(gb, av_ceil_log2(sps->num_long_term_ref_pics_sps));
364 rps->poc[i] = sps->lt_ref_pic_poc_lsb_sps[lt_idx_sps];
365 rps->used[i] = sps->used_by_curr_pic_lt_sps_flag[lt_idx_sps];
367 rps->poc[i] = get_bits(gb, sps->log2_max_poc_lsb);
368 rps->used[i] = get_bits1(gb);
371 delta_poc_msb_present = get_bits1(gb);
372 if (delta_poc_msb_present) {
373 int delta = get_ue_golomb_long(gb);
375 if (i && i != nb_sps)
376 delta += prev_delta_msb;
378 rps->poc[i] += s->poc - delta * max_poc_lsb - s->sh.pic_order_cnt_lsb;
379 prev_delta_msb = delta;
386 static int set_sps(HEVCContext *s, const HEVCSPS *sps)
389 unsigned int num = 0, den = 0;
392 ret = pic_arrays_init(s, sps);
396 s->avctx->coded_width = sps->width;
397 s->avctx->coded_height = sps->height;
398 s->avctx->width = sps->output_width;
399 s->avctx->height = sps->output_height;
400 s->avctx->pix_fmt = sps->pix_fmt;
401 s->avctx->has_b_frames = sps->temporal_layer[sps->max_sub_layers - 1].num_reorder_pics;
403 ff_set_sar(s->avctx, sps->vui.sar);
405 if (sps->vui.video_signal_type_present_flag)
406 s->avctx->color_range = sps->vui.video_full_range_flag ? AVCOL_RANGE_JPEG
409 s->avctx->color_range = AVCOL_RANGE_MPEG;
411 if (sps->vui.colour_description_present_flag) {
412 s->avctx->color_primaries = sps->vui.colour_primaries;
413 s->avctx->color_trc = sps->vui.transfer_characteristic;
414 s->avctx->colorspace = sps->vui.matrix_coeffs;
416 s->avctx->color_primaries = AVCOL_PRI_UNSPECIFIED;
417 s->avctx->color_trc = AVCOL_TRC_UNSPECIFIED;
418 s->avctx->colorspace = AVCOL_SPC_UNSPECIFIED;
421 ff_hevc_pred_init(&s->hpc, sps->bit_depth);
422 ff_hevc_dsp_init (&s->hevcdsp, sps->bit_depth);
423 ff_videodsp_init (&s->vdsp, sps->bit_depth);
425 if (sps->sao_enabled) {
426 av_frame_unref(s->tmp_frame);
427 ret = ff_get_buffer(s->avctx, s->tmp_frame, AV_GET_BUFFER_FLAG_REF);
430 s->frame = s->tmp_frame;
434 s->vps = (HEVCVPS*) s->vps_list[s->sps->vps_id]->data;
436 if (s->vps->vps_timing_info_present_flag) {
437 num = s->vps->vps_num_units_in_tick;
438 den = s->vps->vps_time_scale;
439 } else if (sps->vui.vui_timing_info_present_flag) {
440 num = sps->vui.vui_num_units_in_tick;
441 den = sps->vui.vui_time_scale;
444 if (num != 0 && den != 0)
445 av_reduce(&s->avctx->framerate.den, &s->avctx->framerate.num,
456 static int hls_slice_header(HEVCContext *s)
458 GetBitContext *gb = &s->HEVClc.gb;
459 SliceHeader *sh = &s->sh;
463 sh->first_slice_in_pic_flag = get_bits1(gb);
464 if ((IS_IDR(s) || IS_BLA(s)) && sh->first_slice_in_pic_flag) {
465 s->seq_decode = (s->seq_decode + 1) & 0xff;
468 ff_hevc_clear_refs(s);
471 sh->no_output_of_prior_pics_flag = get_bits1(gb);
473 sh->pps_id = get_ue_golomb_long(gb);
474 if (sh->pps_id >= MAX_PPS_COUNT || !s->pps_list[sh->pps_id]) {
475 av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", sh->pps_id);
476 return AVERROR_INVALIDDATA;
478 if (!sh->first_slice_in_pic_flag &&
479 s->pps != (HEVCPPS*)s->pps_list[sh->pps_id]->data) {
480 av_log(s->avctx, AV_LOG_ERROR, "PPS changed between slices.\n");
481 return AVERROR_INVALIDDATA;
483 s->pps = (HEVCPPS*)s->pps_list[sh->pps_id]->data;
485 if (s->sps != (HEVCSPS*)s->sps_list[s->pps->sps_id]->data) {
486 s->sps = (HEVCSPS*)s->sps_list[s->pps->sps_id]->data;
488 ff_hevc_clear_refs(s);
489 ret = set_sps(s, s->sps);
493 s->seq_decode = (s->seq_decode + 1) & 0xff;
497 s->avctx->profile = s->sps->ptl.general_ptl.profile_idc;
498 s->avctx->level = s->sps->ptl.general_ptl.level_idc;
500 sh->dependent_slice_segment_flag = 0;
501 if (!sh->first_slice_in_pic_flag) {
502 int slice_address_length;
504 if (s->pps->dependent_slice_segments_enabled_flag)
505 sh->dependent_slice_segment_flag = get_bits1(gb);
507 slice_address_length = av_ceil_log2(s->sps->ctb_width *
509 sh->slice_segment_addr = get_bits(gb, slice_address_length);
510 if (sh->slice_segment_addr >= s->sps->ctb_width * s->sps->ctb_height) {
511 av_log(s->avctx, AV_LOG_ERROR,
512 "Invalid slice segment address: %u.\n",
513 sh->slice_segment_addr);
514 return AVERROR_INVALIDDATA;
517 if (!sh->dependent_slice_segment_flag) {
518 sh->slice_addr = sh->slice_segment_addr;
522 sh->slice_segment_addr = sh->slice_addr = 0;
524 s->slice_initialized = 0;
527 if (!sh->dependent_slice_segment_flag) {
528 s->slice_initialized = 0;
530 for (i = 0; i < s->pps->num_extra_slice_header_bits; i++)
531 skip_bits(gb, 1); // slice_reserved_undetermined_flag[]
533 sh->slice_type = get_ue_golomb_long(gb);
534 if (!(sh->slice_type == I_SLICE ||
535 sh->slice_type == P_SLICE ||
536 sh->slice_type == B_SLICE)) {
537 av_log(s->avctx, AV_LOG_ERROR, "Unknown slice type: %d.\n",
539 return AVERROR_INVALIDDATA;
541 if (IS_IRAP(s) && sh->slice_type != I_SLICE) {
542 av_log(s->avctx, AV_LOG_ERROR, "Inter slices in an IRAP frame.\n");
543 return AVERROR_INVALIDDATA;
546 // when flag is not present, picture is inferred to be output
547 sh->pic_output_flag = 1;
548 if (s->pps->output_flag_present_flag)
549 sh->pic_output_flag = get_bits1(gb);
551 if (s->sps->separate_colour_plane_flag)
552 sh->colour_plane_id = get_bits(gb, 2);
555 int short_term_ref_pic_set_sps_flag, poc;
557 sh->pic_order_cnt_lsb = get_bits(gb, s->sps->log2_max_poc_lsb);
558 poc = ff_hevc_compute_poc(s, sh->pic_order_cnt_lsb);
559 if (!sh->first_slice_in_pic_flag && poc != s->poc) {
560 av_log(s->avctx, AV_LOG_WARNING,
561 "Ignoring POC change between slices: %d -> %d\n", s->poc, poc);
562 if (s->avctx->err_recognition & AV_EF_EXPLODE)
563 return AVERROR_INVALIDDATA;
568 short_term_ref_pic_set_sps_flag = get_bits1(gb);
569 if (!short_term_ref_pic_set_sps_flag) {
570 ret = ff_hevc_decode_short_term_rps(s, &sh->slice_rps, s->sps, 1);
574 sh->short_term_rps = &sh->slice_rps;
576 int numbits, rps_idx;
578 if (!s->sps->nb_st_rps) {
579 av_log(s->avctx, AV_LOG_ERROR, "No ref lists in the SPS.\n");
580 return AVERROR_INVALIDDATA;
583 numbits = av_ceil_log2(s->sps->nb_st_rps);
584 rps_idx = numbits > 0 ? get_bits(gb, numbits) : 0;
585 sh->short_term_rps = &s->sps->st_rps[rps_idx];
588 ret = decode_lt_rps(s, &sh->long_term_rps, gb);
590 av_log(s->avctx, AV_LOG_WARNING, "Invalid long term RPS.\n");
591 if (s->avctx->err_recognition & AV_EF_EXPLODE)
592 return AVERROR_INVALIDDATA;
595 if (s->sps->sps_temporal_mvp_enabled_flag)
596 sh->slice_temporal_mvp_enabled_flag = get_bits1(gb);
598 sh->slice_temporal_mvp_enabled_flag = 0;
600 s->sh.short_term_rps = NULL;
605 if (s->temporal_id == 0 &&
606 s->nal_unit_type != NAL_TRAIL_N &&
607 s->nal_unit_type != NAL_TSA_N &&
608 s->nal_unit_type != NAL_STSA_N &&
609 s->nal_unit_type != NAL_RADL_N &&
610 s->nal_unit_type != NAL_RADL_R &&
611 s->nal_unit_type != NAL_RASL_N &&
612 s->nal_unit_type != NAL_RASL_R)
615 if (s->sps->sao_enabled) {
616 sh->slice_sample_adaptive_offset_flag[0] = get_bits1(gb);
617 sh->slice_sample_adaptive_offset_flag[1] =
618 sh->slice_sample_adaptive_offset_flag[2] = get_bits1(gb);
620 sh->slice_sample_adaptive_offset_flag[0] = 0;
621 sh->slice_sample_adaptive_offset_flag[1] = 0;
622 sh->slice_sample_adaptive_offset_flag[2] = 0;
625 sh->nb_refs[L0] = sh->nb_refs[L1] = 0;
626 if (sh->slice_type == P_SLICE || sh->slice_type == B_SLICE) {
629 sh->nb_refs[L0] = s->pps->num_ref_idx_l0_default_active;
630 if (sh->slice_type == B_SLICE)
631 sh->nb_refs[L1] = s->pps->num_ref_idx_l1_default_active;
633 if (get_bits1(gb)) { // num_ref_idx_active_override_flag
634 sh->nb_refs[L0] = get_ue_golomb_long(gb) + 1;
635 if (sh->slice_type == B_SLICE)
636 sh->nb_refs[L1] = get_ue_golomb_long(gb) + 1;
638 if (sh->nb_refs[L0] > MAX_REFS || sh->nb_refs[L1] > MAX_REFS) {
639 av_log(s->avctx, AV_LOG_ERROR, "Too many refs: %d/%d.\n",
640 sh->nb_refs[L0], sh->nb_refs[L1]);
641 return AVERROR_INVALIDDATA;
644 sh->rpl_modification_flag[0] = 0;
645 sh->rpl_modification_flag[1] = 0;
646 nb_refs = ff_hevc_frame_nb_refs(s);
648 av_log(s->avctx, AV_LOG_ERROR, "Zero refs for a frame with P or B slices.\n");
649 return AVERROR_INVALIDDATA;
652 if (s->pps->lists_modification_present_flag && nb_refs > 1) {
653 sh->rpl_modification_flag[0] = get_bits1(gb);
654 if (sh->rpl_modification_flag[0]) {
655 for (i = 0; i < sh->nb_refs[L0]; i++)
656 sh->list_entry_lx[0][i] = get_bits(gb, av_ceil_log2(nb_refs));
659 if (sh->slice_type == B_SLICE) {
660 sh->rpl_modification_flag[1] = get_bits1(gb);
661 if (sh->rpl_modification_flag[1] == 1)
662 for (i = 0; i < sh->nb_refs[L1]; i++)
663 sh->list_entry_lx[1][i] = get_bits(gb, av_ceil_log2(nb_refs));
667 if (sh->slice_type == B_SLICE)
668 sh->mvd_l1_zero_flag = get_bits1(gb);
670 if (s->pps->cabac_init_present_flag)
671 sh->cabac_init_flag = get_bits1(gb);
673 sh->cabac_init_flag = 0;
675 sh->collocated_ref_idx = 0;
676 if (sh->slice_temporal_mvp_enabled_flag) {
677 sh->collocated_list = L0;
678 if (sh->slice_type == B_SLICE)
679 sh->collocated_list = !get_bits1(gb);
681 if (sh->nb_refs[sh->collocated_list] > 1) {
682 sh->collocated_ref_idx = get_ue_golomb_long(gb);
683 if (sh->collocated_ref_idx >= sh->nb_refs[sh->collocated_list]) {
684 av_log(s->avctx, AV_LOG_ERROR,
685 "Invalid collocated_ref_idx: %d.\n",
686 sh->collocated_ref_idx);
687 return AVERROR_INVALIDDATA;
692 if ((s->pps->weighted_pred_flag && sh->slice_type == P_SLICE) ||
693 (s->pps->weighted_bipred_flag && sh->slice_type == B_SLICE)) {
694 pred_weight_table(s, gb);
697 sh->max_num_merge_cand = 5 - get_ue_golomb_long(gb);
698 if (sh->max_num_merge_cand < 1 || sh->max_num_merge_cand > 5) {
699 av_log(s->avctx, AV_LOG_ERROR,
700 "Invalid number of merging MVP candidates: %d.\n",
701 sh->max_num_merge_cand);
702 return AVERROR_INVALIDDATA;
706 sh->slice_qp_delta = get_se_golomb(gb);
708 if (s->pps->pic_slice_level_chroma_qp_offsets_present_flag) {
709 sh->slice_cb_qp_offset = get_se_golomb(gb);
710 sh->slice_cr_qp_offset = get_se_golomb(gb);
712 sh->slice_cb_qp_offset = 0;
713 sh->slice_cr_qp_offset = 0;
716 if (s->pps->deblocking_filter_control_present_flag) {
717 int deblocking_filter_override_flag = 0;
719 if (s->pps->deblocking_filter_override_enabled_flag)
720 deblocking_filter_override_flag = get_bits1(gb);
722 if (deblocking_filter_override_flag) {
723 sh->disable_deblocking_filter_flag = get_bits1(gb);
724 if (!sh->disable_deblocking_filter_flag) {
725 sh->beta_offset = get_se_golomb(gb) * 2;
726 sh->tc_offset = get_se_golomb(gb) * 2;
729 sh->disable_deblocking_filter_flag = s->pps->disable_dbf;
730 sh->beta_offset = s->pps->beta_offset;
731 sh->tc_offset = s->pps->tc_offset;
734 sh->disable_deblocking_filter_flag = 0;
739 if (s->pps->seq_loop_filter_across_slices_enabled_flag &&
740 (sh->slice_sample_adaptive_offset_flag[0] ||
741 sh->slice_sample_adaptive_offset_flag[1] ||
742 !sh->disable_deblocking_filter_flag)) {
743 sh->slice_loop_filter_across_slices_enabled_flag = get_bits1(gb);
745 sh->slice_loop_filter_across_slices_enabled_flag = s->pps->seq_loop_filter_across_slices_enabled_flag;
747 } else if (!s->slice_initialized) {
748 av_log(s->avctx, AV_LOG_ERROR, "Independent slice segment missing.\n");
749 return AVERROR_INVALIDDATA;
752 sh->num_entry_point_offsets = 0;
753 if (s->pps->tiles_enabled_flag || s->pps->entropy_coding_sync_enabled_flag) {
754 sh->num_entry_point_offsets = get_ue_golomb_long(gb);
755 if (sh->num_entry_point_offsets > 0) {
756 int offset_len = get_ue_golomb_long(gb) + 1;
758 for (i = 0; i < sh->num_entry_point_offsets; i++)
759 skip_bits(gb, offset_len);
763 if (s->pps->slice_header_extension_present_flag) {
764 unsigned int length = get_ue_golomb_long(gb);
765 for (i = 0; i < length; i++)
766 skip_bits(gb, 8); // slice_header_extension_data_byte
769 // Inferred parameters
770 sh->slice_qp = 26 + s->pps->pic_init_qp_minus26 + sh->slice_qp_delta;
771 if (sh->slice_qp > 51 ||
772 sh->slice_qp < -s->sps->qp_bd_offset) {
773 av_log(s->avctx, AV_LOG_ERROR,
774 "The slice_qp %d is outside the valid range "
777 -s->sps->qp_bd_offset);
778 return AVERROR_INVALIDDATA;
781 sh->slice_ctb_addr_rs = sh->slice_segment_addr;
783 if (!s->sh.slice_ctb_addr_rs && s->sh.dependent_slice_segment_flag) {
784 av_log(s->avctx, AV_LOG_ERROR, "Impossible slice segment.\n");
785 return AVERROR_INVALIDDATA;
788 s->HEVClc.first_qp_group = !s->sh.dependent_slice_segment_flag;
790 if (!s->pps->cu_qp_delta_enabled_flag)
791 s->HEVClc.qp_y = FFUMOD(s->sh.slice_qp + 52 + 2 * s->sps->qp_bd_offset,
792 52 + s->sps->qp_bd_offset) - s->sps->qp_bd_offset;
794 s->slice_initialized = 1;
799 #define CTB(tab, x, y) ((tab)[(y) * s->sps->ctb_width + (x)])
801 #define SET_SAO(elem, value) \
803 if (!sao_merge_up_flag && !sao_merge_left_flag) \
805 else if (sao_merge_left_flag) \
806 sao->elem = CTB(s->sao, rx-1, ry).elem; \
807 else if (sao_merge_up_flag) \
808 sao->elem = CTB(s->sao, rx, ry-1).elem; \
813 static void hls_sao_param(HEVCContext *s, int rx, int ry)
815 HEVCLocalContext *lc = &s->HEVClc;
816 int sao_merge_left_flag = 0;
817 int sao_merge_up_flag = 0;
818 int shift = s->sps->bit_depth - FFMIN(s->sps->bit_depth, 10);
819 SAOParams *sao = &CTB(s->sao, rx, ry);
822 if (s->sh.slice_sample_adaptive_offset_flag[0] ||
823 s->sh.slice_sample_adaptive_offset_flag[1]) {
825 if (lc->ctb_left_flag)
826 sao_merge_left_flag = ff_hevc_sao_merge_flag_decode(s);
828 if (ry > 0 && !sao_merge_left_flag) {
830 sao_merge_up_flag = ff_hevc_sao_merge_flag_decode(s);
834 for (c_idx = 0; c_idx < 3; c_idx++) {
835 if (!s->sh.slice_sample_adaptive_offset_flag[c_idx]) {
836 sao->type_idx[c_idx] = SAO_NOT_APPLIED;
841 sao->type_idx[2] = sao->type_idx[1];
842 sao->eo_class[2] = sao->eo_class[1];
844 SET_SAO(type_idx[c_idx], ff_hevc_sao_type_idx_decode(s));
847 if (sao->type_idx[c_idx] == SAO_NOT_APPLIED)
850 for (i = 0; i < 4; i++)
851 SET_SAO(offset_abs[c_idx][i], ff_hevc_sao_offset_abs_decode(s));
853 if (sao->type_idx[c_idx] == SAO_BAND) {
854 for (i = 0; i < 4; i++) {
855 if (sao->offset_abs[c_idx][i]) {
856 SET_SAO(offset_sign[c_idx][i],
857 ff_hevc_sao_offset_sign_decode(s));
859 sao->offset_sign[c_idx][i] = 0;
862 SET_SAO(band_position[c_idx], ff_hevc_sao_band_position_decode(s));
863 } else if (c_idx != 2) {
864 SET_SAO(eo_class[c_idx], ff_hevc_sao_eo_class_decode(s));
867 // Inferred parameters
868 sao->offset_val[c_idx][0] = 0;
869 for (i = 0; i < 4; i++) {
870 sao->offset_val[c_idx][i + 1] = sao->offset_abs[c_idx][i] << shift;
871 if (sao->type_idx[c_idx] == SAO_EDGE) {
873 sao->offset_val[c_idx][i + 1] = -sao->offset_val[c_idx][i + 1];
874 } else if (sao->offset_sign[c_idx][i]) {
875 sao->offset_val[c_idx][i + 1] = -sao->offset_val[c_idx][i + 1];
884 static void hls_residual_coding(HEVCContext *s, int x0, int y0,
885 int log2_trafo_size, enum ScanType scan_idx,
888 #define GET_COORD(offset, n) \
890 x_c = (scan_x_cg[offset >> 4] << 2) + scan_x_off[n]; \
891 y_c = (scan_y_cg[offset >> 4] << 2) + scan_y_off[n]; \
893 HEVCLocalContext *lc = &s->HEVClc;
894 int transform_skip_flag = 0;
896 int last_significant_coeff_x, last_significant_coeff_y;
900 int greater1_ctx = 1;
903 int x_cg_last_sig, y_cg_last_sig;
905 const uint8_t *scan_x_cg, *scan_y_cg, *scan_x_off, *scan_y_off;
907 ptrdiff_t stride = s->frame->linesize[c_idx];
908 int hshift = s->sps->hshift[c_idx];
909 int vshift = s->sps->vshift[c_idx];
910 uint8_t *dst = &s->frame->data[c_idx][(y0 >> vshift) * stride +
911 ((x0 >> hshift) << s->sps->pixel_shift)];
912 DECLARE_ALIGNED(16, int16_t, coeffs[MAX_TB_SIZE * MAX_TB_SIZE]) = { 0 };
913 DECLARE_ALIGNED(8, uint8_t, significant_coeff_group_flag[8][8]) = { { 0 } };
915 int trafo_size = 1 << log2_trafo_size;
916 int i, qp, shift, add, scale, scale_m;
917 const uint8_t level_scale[] = { 40, 45, 51, 57, 64, 72 };
918 const uint8_t *scale_matrix;
921 // Derive QP for dequant
922 if (!lc->cu.cu_transquant_bypass_flag) {
923 static const int qp_c[] = {
924 29, 30, 31, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37
927 static const uint8_t rem6[51 + 2 * 6 + 1] = {
928 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
929 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
930 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
933 static const uint8_t div6[51 + 2 * 6 + 1] = {
934 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3,
935 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,
936 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10,
941 qp = qp_y + s->sps->qp_bd_offset;
946 offset = s->pps->cb_qp_offset + s->sh.slice_cb_qp_offset;
948 offset = s->pps->cr_qp_offset + s->sh.slice_cr_qp_offset;
950 qp_i = av_clip_c(qp_y + offset, -s->sps->qp_bd_offset, 57);
956 qp = qp_c[qp_i - 30];
958 qp += s->sps->qp_bd_offset;
961 shift = s->sps->bit_depth + log2_trafo_size - 5;
962 add = 1 << (shift - 1);
963 scale = level_scale[rem6[qp]] << (div6[qp]);
964 scale_m = 16; // default when no custom scaling lists.
967 if (s->sps->scaling_list_enable_flag) {
968 const ScalingList *sl = s->pps->scaling_list_data_present_flag ?
969 &s->pps->scaling_list : &s->sps->scaling_list;
970 int matrix_id = lc->cu.pred_mode != MODE_INTRA;
972 if (log2_trafo_size != 5)
973 matrix_id = 3 * matrix_id + c_idx;
975 scale_matrix = sl->sl[log2_trafo_size - 2][matrix_id];
976 if (log2_trafo_size >= 4)
977 dc_scale = sl->sl_dc[log2_trafo_size - 4][matrix_id];
981 if (s->pps->transform_skip_enabled_flag &&
982 !lc->cu.cu_transquant_bypass_flag &&
983 log2_trafo_size == 2) {
984 transform_skip_flag = ff_hevc_transform_skip_flag_decode(s, c_idx);
987 last_significant_coeff_x =
988 ff_hevc_last_significant_coeff_x_prefix_decode(s, c_idx, log2_trafo_size);
989 last_significant_coeff_y =
990 ff_hevc_last_significant_coeff_y_prefix_decode(s, c_idx, log2_trafo_size);
992 if (last_significant_coeff_x > 3) {
993 int suffix = ff_hevc_last_significant_coeff_suffix_decode(s, last_significant_coeff_x);
994 last_significant_coeff_x = (1 << ((last_significant_coeff_x >> 1) - 1)) *
995 (2 + (last_significant_coeff_x & 1)) +
999 if (last_significant_coeff_y > 3) {
1000 int suffix = ff_hevc_last_significant_coeff_suffix_decode(s, last_significant_coeff_y);
1001 last_significant_coeff_y = (1 << ((last_significant_coeff_y >> 1) - 1)) *
1002 (2 + (last_significant_coeff_y & 1)) +
1006 if (scan_idx == SCAN_VERT)
1007 FFSWAP(int, last_significant_coeff_x, last_significant_coeff_y);
1009 x_cg_last_sig = last_significant_coeff_x >> 2;
1010 y_cg_last_sig = last_significant_coeff_y >> 2;
1014 int last_x_c = last_significant_coeff_x & 3;
1015 int last_y_c = last_significant_coeff_y & 3;
1017 scan_x_off = ff_hevc_diag_scan4x4_x;
1018 scan_y_off = ff_hevc_diag_scan4x4_y;
1019 num_coeff = diag_scan4x4_inv[last_y_c][last_x_c];
1020 if (trafo_size == 4) {
1021 scan_x_cg = scan_1x1;
1022 scan_y_cg = scan_1x1;
1023 } else if (trafo_size == 8) {
1024 num_coeff += diag_scan2x2_inv[y_cg_last_sig][x_cg_last_sig] << 4;
1025 scan_x_cg = diag_scan2x2_x;
1026 scan_y_cg = diag_scan2x2_y;
1027 } else if (trafo_size == 16) {
1028 num_coeff += diag_scan4x4_inv[y_cg_last_sig][x_cg_last_sig] << 4;
1029 scan_x_cg = ff_hevc_diag_scan4x4_x;
1030 scan_y_cg = ff_hevc_diag_scan4x4_y;
1031 } else { // trafo_size == 32
1032 num_coeff += diag_scan8x8_inv[y_cg_last_sig][x_cg_last_sig] << 4;
1033 scan_x_cg = ff_hevc_diag_scan8x8_x;
1034 scan_y_cg = ff_hevc_diag_scan8x8_y;
1039 scan_x_cg = horiz_scan2x2_x;
1040 scan_y_cg = horiz_scan2x2_y;
1041 scan_x_off = horiz_scan4x4_x;
1042 scan_y_off = horiz_scan4x4_y;
1043 num_coeff = horiz_scan8x8_inv[last_significant_coeff_y][last_significant_coeff_x];
1045 default: //SCAN_VERT
1046 scan_x_cg = horiz_scan2x2_y;
1047 scan_y_cg = horiz_scan2x2_x;
1048 scan_x_off = horiz_scan4x4_y;
1049 scan_y_off = horiz_scan4x4_x;
1050 num_coeff = horiz_scan8x8_inv[last_significant_coeff_x][last_significant_coeff_y];
1054 num_last_subset = (num_coeff - 1) >> 4;
1056 for (i = num_last_subset; i >= 0; i--) {
1058 int x_cg, y_cg, x_c, y_c;
1059 int implicit_non_zero_coeff = 0;
1060 int64_t trans_coeff_level;
1062 int offset = i << 4;
1064 uint8_t significant_coeff_flag_idx[16];
1065 uint8_t nb_significant_coeff_flag = 0;
1067 x_cg = scan_x_cg[i];
1068 y_cg = scan_y_cg[i];
1070 if (i < num_last_subset && i > 0) {
1072 if (x_cg < (1 << (log2_trafo_size - 2)) - 1)
1073 ctx_cg += significant_coeff_group_flag[x_cg + 1][y_cg];
1074 if (y_cg < (1 << (log2_trafo_size - 2)) - 1)
1075 ctx_cg += significant_coeff_group_flag[x_cg][y_cg + 1];
1077 significant_coeff_group_flag[x_cg][y_cg] =
1078 ff_hevc_significant_coeff_group_flag_decode(s, c_idx, ctx_cg);
1079 implicit_non_zero_coeff = 1;
1081 significant_coeff_group_flag[x_cg][y_cg] =
1082 ((x_cg == x_cg_last_sig && y_cg == y_cg_last_sig) ||
1083 (x_cg == 0 && y_cg == 0));
1086 last_scan_pos = num_coeff - offset - 1;
1088 if (i == num_last_subset) {
1089 n_end = last_scan_pos - 1;
1090 significant_coeff_flag_idx[0] = last_scan_pos;
1091 nb_significant_coeff_flag = 1;
1096 if (x_cg < ((1 << log2_trafo_size) - 1) >> 2)
1097 prev_sig = significant_coeff_group_flag[x_cg + 1][y_cg];
1098 if (y_cg < ((1 << log2_trafo_size) - 1) >> 2)
1099 prev_sig += significant_coeff_group_flag[x_cg][y_cg + 1] << 1;
1101 for (n = n_end; n >= 0; n--) {
1102 GET_COORD(offset, n);
1104 if (significant_coeff_group_flag[x_cg][y_cg] &&
1105 (n > 0 || implicit_non_zero_coeff == 0)) {
1106 if (ff_hevc_significant_coeff_flag_decode(s, c_idx, x_c, y_c,
1110 significant_coeff_flag_idx[nb_significant_coeff_flag] = n;
1111 nb_significant_coeff_flag++;
1112 implicit_non_zero_coeff = 0;
1115 int last_cg = (x_c == (x_cg << 2) && y_c == (y_cg << 2));
1116 if (last_cg && implicit_non_zero_coeff && significant_coeff_group_flag[x_cg][y_cg]) {
1117 significant_coeff_flag_idx[nb_significant_coeff_flag] = n;
1118 nb_significant_coeff_flag++;
1123 n_end = nb_significant_coeff_flag;
1126 int first_nz_pos_in_cg = 16;
1127 int last_nz_pos_in_cg = -1;
1128 int c_rice_param = 0;
1129 int first_greater1_coeff_idx = -1;
1130 uint8_t coeff_abs_level_greater1_flag[16] = { 0 };
1131 uint16_t coeff_sign_flag;
1133 int sign_hidden = 0;
1135 // initialize first elem of coeff_bas_level_greater1_flag
1136 int ctx_set = (i > 0 && c_idx == 0) ? 2 : 0;
1138 if (!(i == num_last_subset) && greater1_ctx == 0)
1141 last_nz_pos_in_cg = significant_coeff_flag_idx[0];
1143 for (m = 0; m < (n_end > 8 ? 8 : n_end); m++) {
1144 int n_idx = significant_coeff_flag_idx[m];
1145 int inc = (ctx_set << 2) + greater1_ctx;
1146 coeff_abs_level_greater1_flag[n_idx] =
1147 ff_hevc_coeff_abs_level_greater1_flag_decode(s, c_idx, inc);
1148 if (coeff_abs_level_greater1_flag[n_idx]) {
1150 } else if (greater1_ctx > 0 && greater1_ctx < 3) {
1154 if (coeff_abs_level_greater1_flag[n_idx] &&
1155 first_greater1_coeff_idx == -1)
1156 first_greater1_coeff_idx = n_idx;
1158 first_nz_pos_in_cg = significant_coeff_flag_idx[n_end - 1];
1159 sign_hidden = last_nz_pos_in_cg - first_nz_pos_in_cg >= 4 &&
1160 !lc->cu.cu_transquant_bypass_flag;
1162 if (first_greater1_coeff_idx != -1) {
1163 coeff_abs_level_greater1_flag[first_greater1_coeff_idx] += ff_hevc_coeff_abs_level_greater2_flag_decode(s, c_idx, ctx_set);
1165 if (!s->pps->sign_data_hiding_flag || !sign_hidden) {
1166 coeff_sign_flag = ff_hevc_coeff_sign_flag(s, nb_significant_coeff_flag) << (16 - nb_significant_coeff_flag);
1168 coeff_sign_flag = ff_hevc_coeff_sign_flag(s, nb_significant_coeff_flag - 1) << (16 - (nb_significant_coeff_flag - 1));
1171 for (m = 0; m < n_end; m++) {
1172 n = significant_coeff_flag_idx[m];
1173 GET_COORD(offset, n);
1174 trans_coeff_level = 1 + coeff_abs_level_greater1_flag[n];
1175 if (trans_coeff_level == ((m < 8) ?
1176 ((n == first_greater1_coeff_idx) ? 3 : 2) : 1)) {
1177 int last_coeff_abs_level_remaining = ff_hevc_coeff_abs_level_remaining(s, trans_coeff_level, c_rice_param);
1179 trans_coeff_level += last_coeff_abs_level_remaining;
1180 if ((trans_coeff_level) > (3 * (1 << c_rice_param)))
1181 c_rice_param = FFMIN(c_rice_param + 1, 4);
1183 if (s->pps->sign_data_hiding_flag && sign_hidden) {
1184 sum_abs += trans_coeff_level;
1185 if (n == first_nz_pos_in_cg && ((sum_abs & 1) == 1))
1186 trans_coeff_level = -trans_coeff_level;
1188 if (coeff_sign_flag >> 15)
1189 trans_coeff_level = -trans_coeff_level;
1190 coeff_sign_flag <<= 1;
1191 if (!lc->cu.cu_transquant_bypass_flag) {
1192 if (s->sps->scaling_list_enable_flag) {
1193 if (y_c || x_c || log2_trafo_size < 4) {
1195 switch (log2_trafo_size) {
1196 case 3: pos = (y_c << 3) + x_c; break;
1197 case 4: pos = ((y_c >> 1) << 3) + (x_c >> 1); break;
1198 case 5: pos = ((y_c >> 2) << 3) + (x_c >> 2); break;
1199 default: pos = (y_c << 2) + x_c;
1201 scale_m = scale_matrix[pos];
1206 trans_coeff_level = (trans_coeff_level * (int64_t)scale * (int64_t)scale_m + add) >> shift;
1207 if(trans_coeff_level < 0) {
1208 if((~trans_coeff_level) & 0xFffffffffff8000)
1209 trans_coeff_level = -32768;
1211 if (trans_coeff_level & 0xffffffffffff8000)
1212 trans_coeff_level = 32767;
1215 coeffs[y_c * trafo_size + x_c] = trans_coeff_level;
1220 if (lc->cu.cu_transquant_bypass_flag) {
1221 s->hevcdsp.transquant_bypass[log2_trafo_size - 2](dst, coeffs, stride);
1223 if (transform_skip_flag)
1224 s->hevcdsp.transform_skip(dst, coeffs, stride);
1225 else if (lc->cu.pred_mode == MODE_INTRA && c_idx == 0 &&
1226 log2_trafo_size == 2)
1227 s->hevcdsp.transform_4x4_luma_add(dst, coeffs, stride);
1229 s->hevcdsp.transform_add[log2_trafo_size - 2](dst, coeffs, stride);
1233 static int hls_transform_unit(HEVCContext *s, int x0, int y0,
1234 int xBase, int yBase, int cb_xBase, int cb_yBase,
1235 int log2_cb_size, int log2_trafo_size,
1236 int blk_idx, int cbf_luma, int cbf_cb, int cbf_cr)
1238 HEVCLocalContext *lc = &s->HEVClc;
1240 if (lc->cu.pred_mode == MODE_INTRA) {
1241 int trafo_size = 1 << log2_trafo_size;
1242 ff_hevc_set_neighbour_available(s, x0, y0, trafo_size, trafo_size);
1244 s->hpc.intra_pred[log2_trafo_size - 2](s, x0, y0, 0);
1245 if (log2_trafo_size > 2) {
1246 trafo_size = trafo_size << (s->sps->hshift[1] - 1);
1247 ff_hevc_set_neighbour_available(s, x0, y0, trafo_size, trafo_size);
1248 s->hpc.intra_pred[log2_trafo_size - 3](s, x0, y0, 1);
1249 s->hpc.intra_pred[log2_trafo_size - 3](s, x0, y0, 2);
1250 } else if (blk_idx == 3) {
1251 trafo_size = trafo_size << s->sps->hshift[1];
1252 ff_hevc_set_neighbour_available(s, xBase, yBase,
1253 trafo_size, trafo_size);
1254 s->hpc.intra_pred[log2_trafo_size - 2](s, xBase, yBase, 1);
1255 s->hpc.intra_pred[log2_trafo_size - 2](s, xBase, yBase, 2);
1259 if (cbf_luma || cbf_cb || cbf_cr) {
1260 int scan_idx = SCAN_DIAG;
1261 int scan_idx_c = SCAN_DIAG;
1263 if (s->pps->cu_qp_delta_enabled_flag && !lc->tu.is_cu_qp_delta_coded) {
1264 lc->tu.cu_qp_delta = ff_hevc_cu_qp_delta_abs(s);
1265 if (lc->tu.cu_qp_delta != 0)
1266 if (ff_hevc_cu_qp_delta_sign_flag(s) == 1)
1267 lc->tu.cu_qp_delta = -lc->tu.cu_qp_delta;
1268 lc->tu.is_cu_qp_delta_coded = 1;
1270 if (lc->tu.cu_qp_delta < -(26 + s->sps->qp_bd_offset / 2) ||
1271 lc->tu.cu_qp_delta > (25 + s->sps->qp_bd_offset / 2)) {
1272 av_log(s->avctx, AV_LOG_ERROR,
1273 "The cu_qp_delta %d is outside the valid range "
1276 -(26 + s->sps->qp_bd_offset / 2),
1277 (25 + s->sps->qp_bd_offset / 2));
1278 return AVERROR_INVALIDDATA;
1281 ff_hevc_set_qPy(s, x0, y0, cb_xBase, cb_yBase, log2_cb_size);
1284 if (lc->cu.pred_mode == MODE_INTRA && log2_trafo_size < 4) {
1285 if (lc->tu.cur_intra_pred_mode >= 6 &&
1286 lc->tu.cur_intra_pred_mode <= 14) {
1287 scan_idx = SCAN_VERT;
1288 } else if (lc->tu.cur_intra_pred_mode >= 22 &&
1289 lc->tu.cur_intra_pred_mode <= 30) {
1290 scan_idx = SCAN_HORIZ;
1293 if (lc->pu.intra_pred_mode_c >= 6 &&
1294 lc->pu.intra_pred_mode_c <= 14) {
1295 scan_idx_c = SCAN_VERT;
1296 } else if (lc->pu.intra_pred_mode_c >= 22 &&
1297 lc->pu.intra_pred_mode_c <= 30) {
1298 scan_idx_c = SCAN_HORIZ;
1303 hls_residual_coding(s, x0, y0, log2_trafo_size, scan_idx, 0);
1304 if (log2_trafo_size > 2) {
1306 hls_residual_coding(s, x0, y0, log2_trafo_size - 1, scan_idx_c, 1);
1308 hls_residual_coding(s, x0, y0, log2_trafo_size - 1, scan_idx_c, 2);
1309 } else if (blk_idx == 3) {
1311 hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 1);
1313 hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 2);
1319 static void set_deblocking_bypass(HEVCContext *s, int x0, int y0, int log2_cb_size)
1321 int cb_size = 1 << log2_cb_size;
1322 int log2_min_pu_size = s->sps->log2_min_pu_size;
1324 int min_pu_width = s->sps->min_pu_width;
1325 int x_end = FFMIN(x0 + cb_size, s->sps->width);
1326 int y_end = FFMIN(y0 + cb_size, s->sps->height);
1329 for (j = (y0 >> log2_min_pu_size); j < (y_end >> log2_min_pu_size); j++)
1330 for (i = (x0 >> log2_min_pu_size); i < (x_end >> log2_min_pu_size); i++)
1331 s->is_pcm[i + j * min_pu_width] = 2;
1334 static int hls_transform_tree(HEVCContext *s, int x0, int y0,
1335 int xBase, int yBase, int cb_xBase, int cb_yBase,
1336 int log2_cb_size, int log2_trafo_size,
1337 int trafo_depth, int blk_idx,
1338 int cbf_cb, int cbf_cr)
1340 HEVCLocalContext *lc = &s->HEVClc;
1341 uint8_t split_transform_flag;
1344 if (lc->cu.intra_split_flag) {
1345 if (trafo_depth == 1)
1346 lc->tu.cur_intra_pred_mode = lc->pu.intra_pred_mode[blk_idx];
1348 lc->tu.cur_intra_pred_mode = lc->pu.intra_pred_mode[0];
1351 if (log2_trafo_size <= s->sps->log2_max_trafo_size &&
1352 log2_trafo_size > s->sps->log2_min_tb_size &&
1353 trafo_depth < lc->cu.max_trafo_depth &&
1354 !(lc->cu.intra_split_flag && trafo_depth == 0)) {
1355 split_transform_flag = ff_hevc_split_transform_flag_decode(s, log2_trafo_size);
1357 int inter_split = s->sps->max_transform_hierarchy_depth_inter == 0 &&
1358 lc->cu.pred_mode == MODE_INTER &&
1359 lc->cu.part_mode != PART_2Nx2N &&
1362 split_transform_flag = log2_trafo_size > s->sps->log2_max_trafo_size ||
1363 (lc->cu.intra_split_flag && trafo_depth == 0) ||
1367 if (log2_trafo_size > 2 && (trafo_depth == 0 || cbf_cb))
1368 cbf_cb = ff_hevc_cbf_cb_cr_decode(s, trafo_depth);
1369 else if (log2_trafo_size > 2 || trafo_depth == 0)
1371 if (log2_trafo_size > 2 && (trafo_depth == 0 || cbf_cr))
1372 cbf_cr = ff_hevc_cbf_cb_cr_decode(s, trafo_depth);
1373 else if (log2_trafo_size > 2 || trafo_depth == 0)
1376 if (split_transform_flag) {
1377 const int trafo_size_split = 1 << (log2_trafo_size - 1);
1378 const int x1 = x0 + trafo_size_split;
1379 const int y1 = y0 + trafo_size_split;
1381 #define SUBDIVIDE(x, y, idx) \
1383 ret = hls_transform_tree(s, x, y, x0, y0, cb_xBase, cb_yBase, log2_cb_size, \
1384 log2_trafo_size - 1, trafo_depth + 1, idx, \
1390 SUBDIVIDE(x0, y0, 0);
1391 SUBDIVIDE(x1, y0, 1);
1392 SUBDIVIDE(x0, y1, 2);
1393 SUBDIVIDE(x1, y1, 3);
1397 int min_tu_size = 1 << s->sps->log2_min_tb_size;
1398 int log2_min_tu_size = s->sps->log2_min_tb_size;
1399 int min_tu_width = s->sps->min_tb_width;
1402 if (lc->cu.pred_mode == MODE_INTRA || trafo_depth != 0 ||
1404 cbf_luma = ff_hevc_cbf_luma_decode(s, trafo_depth);
1406 ret = hls_transform_unit(s, x0, y0, xBase, yBase, cb_xBase, cb_yBase,
1407 log2_cb_size, log2_trafo_size,
1408 blk_idx, cbf_luma, cbf_cb, cbf_cr);
1411 // TODO: store cbf_luma somewhere else
1414 for (i = 0; i < (1 << log2_trafo_size); i += min_tu_size)
1415 for (j = 0; j < (1 << log2_trafo_size); j += min_tu_size) {
1416 int x_tu = (x0 + j) >> log2_min_tu_size;
1417 int y_tu = (y0 + i) >> log2_min_tu_size;
1418 s->cbf_luma[y_tu * min_tu_width + x_tu] = 1;
1421 if (!s->sh.disable_deblocking_filter_flag) {
1422 ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_trafo_size);
1423 if (s->pps->transquant_bypass_enable_flag &&
1424 lc->cu.cu_transquant_bypass_flag)
1425 set_deblocking_bypass(s, x0, y0, log2_trafo_size);
1431 static int hls_pcm_sample(HEVCContext *s, int x0, int y0, int log2_cb_size)
1433 //TODO: non-4:2:0 support
1434 HEVCLocalContext *lc = &s->HEVClc;
1436 int cb_size = 1 << log2_cb_size;
1437 int stride0 = s->frame->linesize[0];
1438 uint8_t *dst0 = &s->frame->data[0][y0 * stride0 + (x0 << s->sps->pixel_shift)];
1439 int stride1 = s->frame->linesize[1];
1440 uint8_t *dst1 = &s->frame->data[1][(y0 >> s->sps->vshift[1]) * stride1 + ((x0 >> s->sps->hshift[1]) << s->sps->pixel_shift)];
1441 int stride2 = s->frame->linesize[2];
1442 uint8_t *dst2 = &s->frame->data[2][(y0 >> s->sps->vshift[2]) * stride2 + ((x0 >> s->sps->hshift[2]) << s->sps->pixel_shift)];
1444 int length = cb_size * cb_size * s->sps->pcm.bit_depth + ((cb_size * cb_size) >> 1) * s->sps->pcm.bit_depth_chroma;
1445 const uint8_t *pcm = skip_bytes(&lc->cc, (length + 7) >> 3);
1448 if (!s->sh.disable_deblocking_filter_flag)
1449 ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
1451 ret = init_get_bits(&gb, pcm, length);
1455 s->hevcdsp.put_pcm(dst0, stride0, cb_size, &gb, s->sps->pcm.bit_depth);
1456 s->hevcdsp.put_pcm(dst1, stride1, cb_size / 2, &gb, s->sps->pcm.bit_depth_chroma);
1457 s->hevcdsp.put_pcm(dst2, stride2, cb_size / 2, &gb, s->sps->pcm.bit_depth_chroma);
1461 static void hls_mvd_coding(HEVCContext *s, int x0, int y0, int log2_cb_size)
1463 HEVCLocalContext *lc = &s->HEVClc;
1464 int x = ff_hevc_abs_mvd_greater0_flag_decode(s);
1465 int y = ff_hevc_abs_mvd_greater0_flag_decode(s);
1468 x += ff_hevc_abs_mvd_greater1_flag_decode(s);
1470 y += ff_hevc_abs_mvd_greater1_flag_decode(s);
1473 case 2: lc->pu.mvd.x = ff_hevc_mvd_decode(s); break;
1474 case 1: lc->pu.mvd.x = ff_hevc_mvd_sign_flag_decode(s); break;
1475 case 0: lc->pu.mvd.x = 0; break;
1479 case 2: lc->pu.mvd.y = ff_hevc_mvd_decode(s); break;
1480 case 1: lc->pu.mvd.y = ff_hevc_mvd_sign_flag_decode(s); break;
1481 case 0: lc->pu.mvd.y = 0; break;
1486 * 8.5.3.2.2.1 Luma sample interpolation process
1488 * @param s HEVC decoding context
1489 * @param dst target buffer for block data at block position
1490 * @param dststride stride of the dst buffer
1491 * @param ref reference picture buffer at origin (0, 0)
1492 * @param mv motion vector (relative to block position) to get pixel data from
1493 * @param x_off horizontal position of block from origin (0, 0)
1494 * @param y_off vertical position of block from origin (0, 0)
1495 * @param block_w width of block
1496 * @param block_h height of block
1498 static void luma_mc(HEVCContext *s, int16_t *dst, ptrdiff_t dststride,
1499 AVFrame *ref, const Mv *mv, int x_off, int y_off,
1500 int block_w, int block_h)
1502 HEVCLocalContext *lc = &s->HEVClc;
1503 uint8_t *src = ref->data[0];
1504 ptrdiff_t srcstride = ref->linesize[0];
1505 int pic_width = s->sps->width;
1506 int pic_height = s->sps->height;
1510 int extra_left = ff_hevc_qpel_extra_before[mx];
1511 int extra_top = ff_hevc_qpel_extra_before[my];
1513 x_off += mv->x >> 2;
1514 y_off += mv->y >> 2;
1515 src += y_off * srcstride + (x_off << s->sps->pixel_shift);
1517 if (x_off < extra_left || y_off < extra_top ||
1518 x_off >= pic_width - block_w - ff_hevc_qpel_extra_after[mx] ||
1519 y_off >= pic_height - block_h - ff_hevc_qpel_extra_after[my]) {
1520 const int edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->sps->pixel_shift;
1521 int offset = extra_top * srcstride + (extra_left << s->sps->pixel_shift);
1522 int buf_offset = extra_top *
1523 edge_emu_stride + (extra_left << s->sps->pixel_shift);
1525 s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src - offset,
1526 edge_emu_stride, srcstride,
1527 block_w + ff_hevc_qpel_extra[mx],
1528 block_h + ff_hevc_qpel_extra[my],
1529 x_off - extra_left, y_off - extra_top,
1530 pic_width, pic_height);
1531 src = lc->edge_emu_buffer + buf_offset;
1532 srcstride = edge_emu_stride;
1534 s->hevcdsp.put_hevc_qpel[my][mx](dst, dststride, src, srcstride, block_w,
1535 block_h, lc->mc_buffer);
1539 * 8.5.3.2.2.2 Chroma sample interpolation process
1541 * @param s HEVC decoding context
1542 * @param dst1 target buffer for block data at block position (U plane)
1543 * @param dst2 target buffer for block data at block position (V plane)
1544 * @param dststride stride of the dst1 and dst2 buffers
1545 * @param ref reference picture buffer at origin (0, 0)
1546 * @param mv motion vector (relative to block position) to get pixel data from
1547 * @param x_off horizontal position of block from origin (0, 0)
1548 * @param y_off vertical position of block from origin (0, 0)
1549 * @param block_w width of block
1550 * @param block_h height of block
1552 static void chroma_mc(HEVCContext *s, int16_t *dst1, int16_t *dst2,
1553 ptrdiff_t dststride, AVFrame *ref, const Mv *mv,
1554 int x_off, int y_off, int block_w, int block_h)
1556 HEVCLocalContext *lc = &s->HEVClc;
1557 uint8_t *src1 = ref->data[1];
1558 uint8_t *src2 = ref->data[2];
1559 ptrdiff_t src1stride = ref->linesize[1];
1560 ptrdiff_t src2stride = ref->linesize[2];
1561 int pic_width = s->sps->width >> 1;
1562 int pic_height = s->sps->height >> 1;
1567 x_off += mv->x >> 3;
1568 y_off += mv->y >> 3;
1569 src1 += y_off * src1stride + (x_off << s->sps->pixel_shift);
1570 src2 += y_off * src2stride + (x_off << s->sps->pixel_shift);
1572 if (x_off < EPEL_EXTRA_BEFORE || y_off < EPEL_EXTRA_AFTER ||
1573 x_off >= pic_width - block_w - EPEL_EXTRA_AFTER ||
1574 y_off >= pic_height - block_h - EPEL_EXTRA_AFTER) {
1575 const int edge_emu_stride = EDGE_EMU_BUFFER_STRIDE << s->sps->pixel_shift;
1576 int offset1 = EPEL_EXTRA_BEFORE * (src1stride + (1 << s->sps->pixel_shift));
1577 int buf_offset1 = EPEL_EXTRA_BEFORE *
1578 (edge_emu_stride + (1 << s->sps->pixel_shift));
1579 int offset2 = EPEL_EXTRA_BEFORE * (src2stride + (1 << s->sps->pixel_shift));
1580 int buf_offset2 = EPEL_EXTRA_BEFORE *
1581 (edge_emu_stride + (1 << s->sps->pixel_shift));
1583 s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src1 - offset1,
1584 edge_emu_stride, src1stride,
1585 block_w + EPEL_EXTRA, block_h + EPEL_EXTRA,
1586 x_off - EPEL_EXTRA_BEFORE,
1587 y_off - EPEL_EXTRA_BEFORE,
1588 pic_width, pic_height);
1590 src1 = lc->edge_emu_buffer + buf_offset1;
1591 src1stride = edge_emu_stride;
1592 s->hevcdsp.put_hevc_epel[!!my][!!mx](dst1, dststride, src1, src1stride,
1593 block_w, block_h, mx, my, lc->mc_buffer);
1595 s->vdsp.emulated_edge_mc(lc->edge_emu_buffer, src2 - offset2,
1596 edge_emu_stride, src2stride,
1597 block_w + EPEL_EXTRA, block_h + EPEL_EXTRA,
1598 x_off - EPEL_EXTRA_BEFORE,
1599 y_off - EPEL_EXTRA_BEFORE,
1600 pic_width, pic_height);
1601 src2 = lc->edge_emu_buffer + buf_offset2;
1602 src2stride = edge_emu_stride;
1604 s->hevcdsp.put_hevc_epel[!!my][!!mx](dst2, dststride, src2, src2stride,
1605 block_w, block_h, mx, my,
1608 s->hevcdsp.put_hevc_epel[!!my][!!mx](dst1, dststride, src1, src1stride,
1609 block_w, block_h, mx, my,
1611 s->hevcdsp.put_hevc_epel[!!my][!!mx](dst2, dststride, src2, src2stride,
1612 block_w, block_h, mx, my,
1617 static void hevc_await_progress(HEVCContext *s, HEVCFrame *ref,
1618 const Mv *mv, int y0, int height)
1620 int y = (mv->y >> 2) + y0 + height + 9;
1621 ff_thread_await_progress(&ref->tf, y, 0);
1624 static void hls_prediction_unit(HEVCContext *s, int x0, int y0,
1626 int log2_cb_size, int partIdx)
1628 #define POS(c_idx, x, y) \
1629 &s->frame->data[c_idx][((y) >> s->sps->vshift[c_idx]) * s->frame->linesize[c_idx] + \
1630 (((x) >> s->sps->hshift[c_idx]) << s->sps->pixel_shift)]
1631 HEVCLocalContext *lc = &s->HEVClc;
1633 struct MvField current_mv = {{{ 0 }}};
1635 int min_pu_width = s->sps->min_pu_width;
1637 MvField *tab_mvf = s->ref->tab_mvf;
1638 RefPicList *refPicList = s->ref->refPicList;
1639 HEVCFrame *ref0, *ref1;
1641 int tmpstride = MAX_PB_SIZE;
1643 uint8_t *dst0 = POS(0, x0, y0);
1644 uint8_t *dst1 = POS(1, x0, y0);
1645 uint8_t *dst2 = POS(2, x0, y0);
1646 int log2_min_cb_size = s->sps->log2_min_cb_size;
1647 int min_cb_width = s->sps->min_cb_width;
1648 int x_cb = x0 >> log2_min_cb_size;
1649 int y_cb = y0 >> log2_min_cb_size;
1654 int skip_flag = SAMPLE_CTB(s->skip_flag, x_cb, y_cb);
1657 lc->pu.merge_flag = ff_hevc_merge_flag_decode(s);
1659 if (skip_flag || lc->pu.merge_flag) {
1660 if (s->sh.max_num_merge_cand > 1)
1661 merge_idx = ff_hevc_merge_idx_decode(s);
1665 ff_hevc_luma_mv_merge_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
1666 partIdx, merge_idx, ¤t_mv);
1668 enum InterPredIdc inter_pred_idc = PRED_L0;
1671 ff_hevc_set_neighbour_available(s, x0, y0, nPbW, nPbH);
1672 if (s->sh.slice_type == B_SLICE)
1673 inter_pred_idc = ff_hevc_inter_pred_idc_decode(s, nPbW, nPbH);
1675 if (inter_pred_idc != PRED_L1) {
1676 if (s->sh.nb_refs[L0]) {
1677 ref_idx[0] = ff_hevc_ref_idx_lx_decode(s, s->sh.nb_refs[L0]);
1678 current_mv.ref_idx[0] = ref_idx[0];
1680 current_mv.pred_flag[0] = 1;
1681 hls_mvd_coding(s, x0, y0, 0);
1682 mvp_flag = ff_hevc_mvp_lx_flag_decode(s);
1683 ff_hevc_luma_mv_mvp_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
1684 partIdx, merge_idx, ¤t_mv,
1686 current_mv.mv[0].x += lc->pu.mvd.x;
1687 current_mv.mv[0].y += lc->pu.mvd.y;
1690 if (inter_pred_idc != PRED_L0) {
1691 if (s->sh.nb_refs[L1]) {
1692 ref_idx[1] = ff_hevc_ref_idx_lx_decode(s, s->sh.nb_refs[L1]);
1693 current_mv.ref_idx[1] = ref_idx[1];
1696 if (s->sh.mvd_l1_zero_flag == 1 && inter_pred_idc == PRED_BI) {
1697 AV_ZERO32(&lc->pu.mvd);
1699 hls_mvd_coding(s, x0, y0, 1);
1702 current_mv.pred_flag[1] = 1;
1703 mvp_flag = ff_hevc_mvp_lx_flag_decode(s);
1704 ff_hevc_luma_mv_mvp_mode(s, x0, y0, nPbW, nPbH, log2_cb_size,
1705 partIdx, merge_idx, ¤t_mv,
1707 current_mv.mv[1].x += lc->pu.mvd.x;
1708 current_mv.mv[1].y += lc->pu.mvd.y;
1712 x_pu = x0 >> s->sps->log2_min_pu_size;
1713 y_pu = y0 >> s->sps->log2_min_pu_size;
1715 for (j = 0; j < nPbH >> s->sps->log2_min_pu_size; j++)
1716 for (i = 0; i < nPbW >> s->sps->log2_min_pu_size; i++)
1717 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i] = current_mv;
1719 if (current_mv.pred_flag[0]) {
1720 ref0 = refPicList[0].ref[current_mv.ref_idx[0]];
1723 hevc_await_progress(s, ref0, ¤t_mv.mv[0], y0, nPbH);
1725 if (current_mv.pred_flag[1]) {
1726 ref1 = refPicList[1].ref[current_mv.ref_idx[1]];
1729 hevc_await_progress(s, ref1, ¤t_mv.mv[1], y0, nPbH);
1732 if (current_mv.pred_flag[0] && !current_mv.pred_flag[1]) {
1733 DECLARE_ALIGNED(16, int16_t, tmp[MAX_PB_SIZE * MAX_PB_SIZE]);
1734 DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
1736 luma_mc(s, tmp, tmpstride, ref0->frame,
1737 ¤t_mv.mv[0], x0, y0, nPbW, nPbH);
1739 if ((s->sh.slice_type == P_SLICE && s->pps->weighted_pred_flag) ||
1740 (s->sh.slice_type == B_SLICE && s->pps->weighted_bipred_flag)) {
1741 s->hevcdsp.weighted_pred(s->sh.luma_log2_weight_denom,
1742 s->sh.luma_weight_l0[current_mv.ref_idx[0]],
1743 s->sh.luma_offset_l0[current_mv.ref_idx[0]],
1744 dst0, s->frame->linesize[0], tmp,
1745 tmpstride, nPbW, nPbH);
1747 s->hevcdsp.put_unweighted_pred(dst0, s->frame->linesize[0], tmp, tmpstride, nPbW, nPbH);
1749 chroma_mc(s, tmp, tmp2, tmpstride, ref0->frame,
1750 ¤t_mv.mv[0], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2);
1752 if ((s->sh.slice_type == P_SLICE && s->pps->weighted_pred_flag) ||
1753 (s->sh.slice_type == B_SLICE && s->pps->weighted_bipred_flag)) {
1754 s->hevcdsp.weighted_pred(s->sh.chroma_log2_weight_denom,
1755 s->sh.chroma_weight_l0[current_mv.ref_idx[0]][0],
1756 s->sh.chroma_offset_l0[current_mv.ref_idx[0]][0],
1757 dst1, s->frame->linesize[1], tmp, tmpstride,
1758 nPbW / 2, nPbH / 2);
1759 s->hevcdsp.weighted_pred(s->sh.chroma_log2_weight_denom,
1760 s->sh.chroma_weight_l0[current_mv.ref_idx[0]][1],
1761 s->sh.chroma_offset_l0[current_mv.ref_idx[0]][1],
1762 dst2, s->frame->linesize[2], tmp2, tmpstride,
1763 nPbW / 2, nPbH / 2);
1765 s->hevcdsp.put_unweighted_pred(dst1, s->frame->linesize[1], tmp, tmpstride, nPbW/2, nPbH/2);
1766 s->hevcdsp.put_unweighted_pred(dst2, s->frame->linesize[2], tmp2, tmpstride, nPbW/2, nPbH/2);
1768 } else if (!current_mv.pred_flag[0] && current_mv.pred_flag[1]) {
1769 DECLARE_ALIGNED(16, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
1770 DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
1775 luma_mc(s, tmp, tmpstride, ref1->frame,
1776 ¤t_mv.mv[1], x0, y0, nPbW, nPbH);
1778 if ((s->sh.slice_type == P_SLICE && s->pps->weighted_pred_flag) ||
1779 (s->sh.slice_type == B_SLICE && s->pps->weighted_bipred_flag)) {
1780 s->hevcdsp.weighted_pred(s->sh.luma_log2_weight_denom,
1781 s->sh.luma_weight_l1[current_mv.ref_idx[1]],
1782 s->sh.luma_offset_l1[current_mv.ref_idx[1]],
1783 dst0, s->frame->linesize[0], tmp, tmpstride,
1786 s->hevcdsp.put_unweighted_pred(dst0, s->frame->linesize[0], tmp, tmpstride, nPbW, nPbH);
1789 chroma_mc(s, tmp, tmp2, tmpstride, ref1->frame,
1790 ¤t_mv.mv[1], x0/2, y0/2, nPbW/2, nPbH/2);
1792 if ((s->sh.slice_type == P_SLICE && s->pps->weighted_pred_flag) ||
1793 (s->sh.slice_type == B_SLICE && s->pps->weighted_bipred_flag)) {
1794 s->hevcdsp.weighted_pred(s->sh.chroma_log2_weight_denom,
1795 s->sh.chroma_weight_l1[current_mv.ref_idx[1]][0],
1796 s->sh.chroma_offset_l1[current_mv.ref_idx[1]][0],
1797 dst1, s->frame->linesize[1], tmp, tmpstride, nPbW/2, nPbH/2);
1798 s->hevcdsp.weighted_pred(s->sh.chroma_log2_weight_denom,
1799 s->sh.chroma_weight_l1[current_mv.ref_idx[1]][1],
1800 s->sh.chroma_offset_l1[current_mv.ref_idx[1]][1],
1801 dst2, s->frame->linesize[2], tmp2, tmpstride, nPbW/2, nPbH/2);
1803 s->hevcdsp.put_unweighted_pred(dst1, s->frame->linesize[1], tmp, tmpstride, nPbW/2, nPbH/2);
1804 s->hevcdsp.put_unweighted_pred(dst2, s->frame->linesize[2], tmp2, tmpstride, nPbW/2, nPbH/2);
1806 } else if (current_mv.pred_flag[0] && current_mv.pred_flag[1]) {
1807 DECLARE_ALIGNED(16, int16_t, tmp [MAX_PB_SIZE * MAX_PB_SIZE]);
1808 DECLARE_ALIGNED(16, int16_t, tmp2[MAX_PB_SIZE * MAX_PB_SIZE]);
1809 DECLARE_ALIGNED(16, int16_t, tmp3[MAX_PB_SIZE * MAX_PB_SIZE]);
1810 DECLARE_ALIGNED(16, int16_t, tmp4[MAX_PB_SIZE * MAX_PB_SIZE]);
1811 HEVCFrame *ref0 = refPicList[0].ref[current_mv.ref_idx[0]];
1812 HEVCFrame *ref1 = refPicList[1].ref[current_mv.ref_idx[1]];
1817 luma_mc(s, tmp, tmpstride, ref0->frame,
1818 ¤t_mv.mv[0], x0, y0, nPbW, nPbH);
1819 luma_mc(s, tmp2, tmpstride, ref1->frame,
1820 ¤t_mv.mv[1], x0, y0, nPbW, nPbH);
1822 if ((s->sh.slice_type == P_SLICE && s->pps->weighted_pred_flag) ||
1823 (s->sh.slice_type == B_SLICE && s->pps->weighted_bipred_flag)) {
1824 s->hevcdsp.weighted_pred_avg(s->sh.luma_log2_weight_denom,
1825 s->sh.luma_weight_l0[current_mv.ref_idx[0]],
1826 s->sh.luma_weight_l1[current_mv.ref_idx[1]],
1827 s->sh.luma_offset_l0[current_mv.ref_idx[0]],
1828 s->sh.luma_offset_l1[current_mv.ref_idx[1]],
1829 dst0, s->frame->linesize[0],
1830 tmp, tmp2, tmpstride, nPbW, nPbH);
1832 s->hevcdsp.put_weighted_pred_avg(dst0, s->frame->linesize[0],
1833 tmp, tmp2, tmpstride, nPbW, nPbH);
1836 chroma_mc(s, tmp, tmp2, tmpstride, ref0->frame,
1837 ¤t_mv.mv[0], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2);
1838 chroma_mc(s, tmp3, tmp4, tmpstride, ref1->frame,
1839 ¤t_mv.mv[1], x0 / 2, y0 / 2, nPbW / 2, nPbH / 2);
1841 if ((s->sh.slice_type == P_SLICE && s->pps->weighted_pred_flag) ||
1842 (s->sh.slice_type == B_SLICE && s->pps->weighted_bipred_flag)) {
1843 s->hevcdsp.weighted_pred_avg(s->sh.chroma_log2_weight_denom,
1844 s->sh.chroma_weight_l0[current_mv.ref_idx[0]][0],
1845 s->sh.chroma_weight_l1[current_mv.ref_idx[1]][0],
1846 s->sh.chroma_offset_l0[current_mv.ref_idx[0]][0],
1847 s->sh.chroma_offset_l1[current_mv.ref_idx[1]][0],
1848 dst1, s->frame->linesize[1], tmp, tmp3,
1849 tmpstride, nPbW / 2, nPbH / 2);
1850 s->hevcdsp.weighted_pred_avg(s->sh.chroma_log2_weight_denom,
1851 s->sh.chroma_weight_l0[current_mv.ref_idx[0]][1],
1852 s->sh.chroma_weight_l1[current_mv.ref_idx[1]][1],
1853 s->sh.chroma_offset_l0[current_mv.ref_idx[0]][1],
1854 s->sh.chroma_offset_l1[current_mv.ref_idx[1]][1],
1855 dst2, s->frame->linesize[2], tmp2, tmp4,
1856 tmpstride, nPbW / 2, nPbH / 2);
1858 s->hevcdsp.put_weighted_pred_avg(dst1, s->frame->linesize[1], tmp, tmp3, tmpstride, nPbW/2, nPbH/2);
1859 s->hevcdsp.put_weighted_pred_avg(dst2, s->frame->linesize[2], tmp2, tmp4, tmpstride, nPbW/2, nPbH/2);
1867 static int luma_intra_pred_mode(HEVCContext *s, int x0, int y0, int pu_size,
1868 int prev_intra_luma_pred_flag)
1870 HEVCLocalContext *lc = &s->HEVClc;
1871 int x_pu = x0 >> s->sps->log2_min_pu_size;
1872 int y_pu = y0 >> s->sps->log2_min_pu_size;
1873 int min_pu_width = s->sps->min_pu_width;
1874 int size_in_pus = pu_size >> s->sps->log2_min_pu_size;
1875 int x0b = x0 & ((1 << s->sps->log2_ctb_size) - 1);
1876 int y0b = y0 & ((1 << s->sps->log2_ctb_size) - 1);
1878 int cand_up = (lc->ctb_up_flag || y0b) ?
1879 s->tab_ipm[(y_pu - 1) * min_pu_width + x_pu] : INTRA_DC;
1880 int cand_left = (lc->ctb_left_flag || x0b) ?
1881 s->tab_ipm[y_pu * min_pu_width + x_pu - 1] : INTRA_DC;
1883 int y_ctb = (y0 >> (s->sps->log2_ctb_size)) << (s->sps->log2_ctb_size);
1885 MvField *tab_mvf = s->ref->tab_mvf;
1886 int intra_pred_mode;
1890 // intra_pred_mode prediction does not cross vertical CTB boundaries
1891 if ((y0 - 1) < y_ctb)
1894 if (cand_left == cand_up) {
1895 if (cand_left < 2) {
1896 candidate[0] = INTRA_PLANAR;
1897 candidate[1] = INTRA_DC;
1898 candidate[2] = INTRA_ANGULAR_26;
1900 candidate[0] = cand_left;
1901 candidate[1] = 2 + ((cand_left - 2 - 1 + 32) & 31);
1902 candidate[2] = 2 + ((cand_left - 2 + 1) & 31);
1905 candidate[0] = cand_left;
1906 candidate[1] = cand_up;
1907 if (candidate[0] != INTRA_PLANAR && candidate[1] != INTRA_PLANAR) {
1908 candidate[2] = INTRA_PLANAR;
1909 } else if (candidate[0] != INTRA_DC && candidate[1] != INTRA_DC) {
1910 candidate[2] = INTRA_DC;
1912 candidate[2] = INTRA_ANGULAR_26;
1916 if (prev_intra_luma_pred_flag) {
1917 intra_pred_mode = candidate[lc->pu.mpm_idx];
1919 if (candidate[0] > candidate[1])
1920 FFSWAP(uint8_t, candidate[0], candidate[1]);
1921 if (candidate[0] > candidate[2])
1922 FFSWAP(uint8_t, candidate[0], candidate[2]);
1923 if (candidate[1] > candidate[2])
1924 FFSWAP(uint8_t, candidate[1], candidate[2]);
1926 intra_pred_mode = lc->pu.rem_intra_luma_pred_mode;
1927 for (i = 0; i < 3; i++)
1928 if (intra_pred_mode >= candidate[i])
1932 /* write the intra prediction units into the mv array */
1935 for (i = 0; i < size_in_pus; i++) {
1936 memset(&s->tab_ipm[(y_pu + i) * min_pu_width + x_pu],
1937 intra_pred_mode, size_in_pus);
1939 for (j = 0; j < size_in_pus; j++) {
1940 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].is_intra = 1;
1941 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].pred_flag[0] = 0;
1942 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].pred_flag[1] = 0;
1943 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].ref_idx[0] = 0;
1944 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].ref_idx[1] = 0;
1945 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[0].x = 0;
1946 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[0].y = 0;
1947 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[1].x = 0;
1948 tab_mvf[(y_pu + j) * min_pu_width + x_pu + i].mv[1].y = 0;
1952 return intra_pred_mode;
1955 static av_always_inline void set_ct_depth(HEVCContext *s, int x0, int y0,
1956 int log2_cb_size, int ct_depth)
1958 int length = (1 << log2_cb_size) >> s->sps->log2_min_cb_size;
1959 int x_cb = x0 >> s->sps->log2_min_cb_size;
1960 int y_cb = y0 >> s->sps->log2_min_cb_size;
1963 for (y = 0; y < length; y++)
1964 memset(&s->tab_ct_depth[(y_cb + y) * s->sps->min_cb_width + x_cb],
1968 static void intra_prediction_unit(HEVCContext *s, int x0, int y0,
1971 HEVCLocalContext *lc = &s->HEVClc;
1972 static const uint8_t intra_chroma_table[4] = { 0, 26, 10, 1 };
1973 uint8_t prev_intra_luma_pred_flag[4];
1974 int split = lc->cu.part_mode == PART_NxN;
1975 int pb_size = (1 << log2_cb_size) >> split;
1976 int side = split + 1;
1980 for (i = 0; i < side; i++)
1981 for (j = 0; j < side; j++)
1982 prev_intra_luma_pred_flag[2 * i + j] = ff_hevc_prev_intra_luma_pred_flag_decode(s);
1984 for (i = 0; i < side; i++) {
1985 for (j = 0; j < side; j++) {
1986 if (prev_intra_luma_pred_flag[2 * i + j])
1987 lc->pu.mpm_idx = ff_hevc_mpm_idx_decode(s);
1989 lc->pu.rem_intra_luma_pred_mode = ff_hevc_rem_intra_luma_pred_mode_decode(s);
1991 lc->pu.intra_pred_mode[2 * i + j] =
1992 luma_intra_pred_mode(s, x0 + pb_size * j, y0 + pb_size * i, pb_size,
1993 prev_intra_luma_pred_flag[2 * i + j]);
1997 chroma_mode = ff_hevc_intra_chroma_pred_mode_decode(s);
1998 if (chroma_mode != 4) {
1999 if (lc->pu.intra_pred_mode[0] == intra_chroma_table[chroma_mode])
2000 lc->pu.intra_pred_mode_c = 34;
2002 lc->pu.intra_pred_mode_c = intra_chroma_table[chroma_mode];
2004 lc->pu.intra_pred_mode_c = lc->pu.intra_pred_mode[0];
2008 static void intra_prediction_unit_default_value(HEVCContext *s,
2012 HEVCLocalContext *lc = &s->HEVClc;
2013 int pb_size = 1 << log2_cb_size;
2014 int size_in_pus = pb_size >> s->sps->log2_min_pu_size;
2015 int min_pu_width = s->sps->min_pu_width;
2016 MvField *tab_mvf = s->ref->tab_mvf;
2017 int x_pu = x0 >> s->sps->log2_min_pu_size;
2018 int y_pu = y0 >> s->sps->log2_min_pu_size;
2021 if (size_in_pus == 0)
2023 for (j = 0; j < size_in_pus; j++) {
2024 memset(&s->tab_ipm[(y_pu + j) * min_pu_width + x_pu], INTRA_DC, size_in_pus);
2025 for (k = 0; k < size_in_pus; k++)
2026 tab_mvf[(y_pu + j) * min_pu_width + x_pu + k].is_intra = lc->cu.pred_mode == MODE_INTRA;
2030 static int hls_coding_unit(HEVCContext *s, int x0, int y0, int log2_cb_size)
2032 int cb_size = 1 << log2_cb_size;
2033 HEVCLocalContext *lc = &s->HEVClc;
2034 int log2_min_cb_size = s->sps->log2_min_cb_size;
2035 int length = cb_size >> log2_min_cb_size;
2036 int min_cb_width = s->sps->min_cb_width;
2037 int x_cb = x0 >> log2_min_cb_size;
2038 int y_cb = y0 >> log2_min_cb_size;
2043 lc->cu.pred_mode = MODE_INTRA;
2044 lc->cu.part_mode = PART_2Nx2N;
2045 lc->cu.intra_split_flag = 0;
2047 SAMPLE_CTB(s->skip_flag, x_cb, y_cb) = 0;
2048 for (x = 0; x < 4; x++)
2049 lc->pu.intra_pred_mode[x] = 1;
2050 if (s->pps->transquant_bypass_enable_flag) {
2051 lc->cu.cu_transquant_bypass_flag = ff_hevc_cu_transquant_bypass_flag_decode(s);
2052 if (lc->cu.cu_transquant_bypass_flag)
2053 set_deblocking_bypass(s, x0, y0, log2_cb_size);
2055 lc->cu.cu_transquant_bypass_flag = 0;
2057 if (s->sh.slice_type != I_SLICE) {
2058 uint8_t skip_flag = ff_hevc_skip_flag_decode(s, x0, y0, x_cb, y_cb);
2060 x = y_cb * min_cb_width + x_cb;
2061 for (y = 0; y < length; y++) {
2062 memset(&s->skip_flag[x], skip_flag, length);
2065 lc->cu.pred_mode = skip_flag ? MODE_SKIP : MODE_INTER;
2068 if (SAMPLE_CTB(s->skip_flag, x_cb, y_cb)) {
2069 hls_prediction_unit(s, x0, y0, cb_size, cb_size, log2_cb_size, 0);
2070 intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
2072 if (!s->sh.disable_deblocking_filter_flag)
2073 ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
2077 if (s->sh.slice_type != I_SLICE)
2078 lc->cu.pred_mode = ff_hevc_pred_mode_decode(s);
2079 if (lc->cu.pred_mode != MODE_INTRA ||
2080 log2_cb_size == s->sps->log2_min_cb_size) {
2081 lc->cu.part_mode = ff_hevc_part_mode_decode(s, log2_cb_size);
2082 lc->cu.intra_split_flag = lc->cu.part_mode == PART_NxN &&
2083 lc->cu.pred_mode == MODE_INTRA;
2086 if (lc->cu.pred_mode == MODE_INTRA) {
2087 if (lc->cu.part_mode == PART_2Nx2N && s->sps->pcm_enabled_flag &&
2088 log2_cb_size >= s->sps->pcm.log2_min_pcm_cb_size &&
2089 log2_cb_size <= s->sps->pcm.log2_max_pcm_cb_size) {
2090 pcm_flag = ff_hevc_pcm_flag_decode(s);
2093 intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
2094 ret = hls_pcm_sample(s, x0, y0, log2_cb_size);
2095 if (s->sps->pcm.loop_filter_disable_flag)
2096 set_deblocking_bypass(s, x0, y0, log2_cb_size);
2101 intra_prediction_unit(s, x0, y0, log2_cb_size);
2104 intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
2105 switch (lc->cu.part_mode) {
2107 hls_prediction_unit(s, x0, y0, cb_size, cb_size, log2_cb_size, 0);
2110 hls_prediction_unit(s, x0, y0, cb_size, cb_size / 2, log2_cb_size, 0);
2111 hls_prediction_unit(s, x0, y0 + cb_size / 2, cb_size, cb_size / 2, log2_cb_size, 1);
2114 hls_prediction_unit(s, x0, y0, cb_size / 2, cb_size, log2_cb_size, 0);
2115 hls_prediction_unit(s, x0 + cb_size / 2, y0, cb_size / 2, cb_size, log2_cb_size, 1);
2118 hls_prediction_unit(s, x0, y0, cb_size, cb_size / 4, log2_cb_size, 0);
2119 hls_prediction_unit(s, x0, y0 + cb_size / 4, cb_size, cb_size * 3 / 4, log2_cb_size, 1);
2122 hls_prediction_unit(s, x0, y0, cb_size, cb_size * 3 / 4, log2_cb_size, 0);
2123 hls_prediction_unit(s, x0, y0 + cb_size * 3 / 4, cb_size, cb_size / 4, log2_cb_size, 1);
2126 hls_prediction_unit(s, x0, y0, cb_size / 4, cb_size, log2_cb_size, 0);
2127 hls_prediction_unit(s, x0 + cb_size / 4, y0, cb_size * 3 / 4, cb_size, log2_cb_size, 1);
2130 hls_prediction_unit(s, x0, y0, cb_size * 3 / 4, cb_size, log2_cb_size, 0);
2131 hls_prediction_unit(s, x0 + cb_size * 3 / 4, y0, cb_size / 4, cb_size, log2_cb_size, 1);
2134 hls_prediction_unit(s, x0, y0, cb_size / 2, cb_size / 2, log2_cb_size, 0);
2135 hls_prediction_unit(s, x0 + cb_size / 2, y0, cb_size / 2, cb_size / 2, log2_cb_size, 1);
2136 hls_prediction_unit(s, x0, y0 + cb_size / 2, cb_size / 2, cb_size / 2, log2_cb_size, 2);
2137 hls_prediction_unit(s, x0 + cb_size / 2, y0 + cb_size / 2, cb_size / 2, cb_size / 2, log2_cb_size, 3);
2143 int rqt_root_cbf = 1;
2145 if (lc->cu.pred_mode != MODE_INTRA &&
2146 !(lc->cu.part_mode == PART_2Nx2N && lc->pu.merge_flag)) {
2147 rqt_root_cbf = ff_hevc_no_residual_syntax_flag_decode(s);
2150 lc->cu.max_trafo_depth = lc->cu.pred_mode == MODE_INTRA ?
2151 s->sps->max_transform_hierarchy_depth_intra + lc->cu.intra_split_flag :
2152 s->sps->max_transform_hierarchy_depth_inter;
2153 ret = hls_transform_tree(s, x0, y0, x0, y0, x0, y0,
2155 log2_cb_size, 0, 0, 0, 0);
2159 if (!s->sh.disable_deblocking_filter_flag)
2160 ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size);
2165 if (s->pps->cu_qp_delta_enabled_flag && lc->tu.is_cu_qp_delta_coded == 0)
2166 ff_hevc_set_qPy(s, x0, y0, x0, y0, log2_cb_size);
2168 x = y_cb * min_cb_width + x_cb;
2169 for (y = 0; y < length; y++) {
2170 memset(&s->qp_y_tab[x], lc->qp_y, length);
2174 set_ct_depth(s, x0, y0, log2_cb_size, lc->ct.depth);
2179 static int hls_coding_quadtree(HEVCContext *s, int x0, int y0,
2180 int log2_cb_size, int cb_depth)
2182 HEVCLocalContext *lc = &s->HEVClc;
2183 const int cb_size = 1 << log2_cb_size;
2186 lc->ct.depth = cb_depth;
2187 if (x0 + cb_size <= s->sps->width &&
2188 y0 + cb_size <= s->sps->height &&
2189 log2_cb_size > s->sps->log2_min_cb_size) {
2190 split_cu = ff_hevc_split_coding_unit_flag_decode(s, cb_depth, x0, y0);
2192 split_cu = (log2_cb_size > s->sps->log2_min_cb_size);
2194 if (s->pps->cu_qp_delta_enabled_flag &&
2195 log2_cb_size >= s->sps->log2_ctb_size - s->pps->diff_cu_qp_delta_depth) {
2196 lc->tu.is_cu_qp_delta_coded = 0;
2197 lc->tu.cu_qp_delta = 0;
2201 const int cb_size_split = cb_size >> 1;
2202 const int x1 = x0 + cb_size_split;
2203 const int y1 = y0 + cb_size_split;
2208 #define SUBDIVIDE(x, y) \
2210 if (x < s->sps->width && y < s->sps->height) { \
2211 int ret = hls_coding_quadtree(s, x, y, log2_cb_size, cb_depth);\
2222 int ret = hls_coding_unit(s, x0, y0, log2_cb_size);
2230 static void hls_decode_neighbour(HEVCContext *s, int x_ctb, int y_ctb,
2233 HEVCLocalContext *lc = &s->HEVClc;
2234 int ctb_size = 1 << s->sps->log2_ctb_size;
2235 int ctb_addr_rs = s->pps->ctb_addr_ts_to_rs[ctb_addr_ts];
2236 int ctb_addr_in_slice = ctb_addr_rs - s->sh.slice_addr;
2238 s->tab_slice_address[ctb_addr_rs] = s->sh.slice_addr;
2240 if (s->pps->entropy_coding_sync_enabled_flag) {
2241 if (x_ctb == 0 && (y_ctb & (ctb_size - 1)) == 0)
2242 lc->first_qp_group = 1;
2243 lc->end_of_tiles_x = s->sps->width;
2244 } else if (s->pps->tiles_enabled_flag) {
2245 if (ctb_addr_ts && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[ctb_addr_ts - 1]) {
2246 int idxX = s->pps->col_idxX[x_ctb >> s->sps->log2_ctb_size];
2247 lc->start_of_tiles_x = x_ctb;
2248 lc->end_of_tiles_x = x_ctb + (s->pps->column_width[idxX] << s->sps->log2_ctb_size);
2249 lc->first_qp_group = 1;
2252 lc->end_of_tiles_x = s->sps->width;
2255 lc->end_of_tiles_y = FFMIN(y_ctb + ctb_size, s->sps->height);
2257 lc->boundary_flags = 0;
2258 if (s->pps->tiles_enabled_flag) {
2259 if (x_ctb > 0 && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs - 1]])
2260 lc->boundary_flags |= BOUNDARY_LEFT_TILE;
2261 if (x_ctb > 0 && s->tab_slice_address[ctb_addr_rs] != s->tab_slice_address[ctb_addr_rs - 1])
2262 lc->boundary_flags |= BOUNDARY_LEFT_SLICE;
2263 if (y_ctb > 0 && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs - s->sps->ctb_width]])
2264 lc->boundary_flags |= BOUNDARY_UPPER_TILE;
2265 if (y_ctb > 0 && s->tab_slice_address[ctb_addr_rs] != s->tab_slice_address[ctb_addr_rs - s->sps->ctb_width])
2266 lc->boundary_flags |= BOUNDARY_UPPER_SLICE;
2268 if (!ctb_addr_in_slice > 0)
2269 lc->boundary_flags |= BOUNDARY_LEFT_SLICE;
2270 if (ctb_addr_in_slice < s->sps->ctb_width)
2271 lc->boundary_flags |= BOUNDARY_UPPER_SLICE;
2274 lc->ctb_left_flag = ((x_ctb > 0) && (ctb_addr_in_slice > 0) && !(lc->boundary_flags & BOUNDARY_LEFT_TILE));
2275 lc->ctb_up_flag = ((y_ctb > 0) && (ctb_addr_in_slice >= s->sps->ctb_width) && !(lc->boundary_flags & BOUNDARY_UPPER_TILE));
2276 lc->ctb_up_right_flag = ((y_ctb > 0) && (ctb_addr_in_slice+1 >= s->sps->ctb_width) && (s->pps->tile_id[ctb_addr_ts] == s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs+1 - s->sps->ctb_width]]));
2277 lc->ctb_up_left_flag = ((x_ctb > 0) && (y_ctb > 0) && (ctb_addr_in_slice-1 >= s->sps->ctb_width) && (s->pps->tile_id[ctb_addr_ts] == s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs-1 - s->sps->ctb_width]]));
2280 static int hls_slice_data(HEVCContext *s)
2282 int ctb_size = 1 << s->sps->log2_ctb_size;
2286 int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[s->sh.slice_ctb_addr_rs];
2289 while (more_data && ctb_addr_ts < s->sps->ctb_size) {
2290 int ctb_addr_rs = s->pps->ctb_addr_ts_to_rs[ctb_addr_ts];
2292 x_ctb = (ctb_addr_rs % ((s->sps->width + ctb_size - 1) >> s->sps->log2_ctb_size)) << s->sps->log2_ctb_size;
2293 y_ctb = (ctb_addr_rs / ((s->sps->width + ctb_size - 1) >> s->sps->log2_ctb_size)) << s->sps->log2_ctb_size;
2294 hls_decode_neighbour(s, x_ctb, y_ctb, ctb_addr_ts);
2296 ff_hevc_cabac_init(s, ctb_addr_ts);
2298 hls_sao_param(s, x_ctb >> s->sps->log2_ctb_size, y_ctb >> s->sps->log2_ctb_size);
2300 s->deblock[ctb_addr_rs].beta_offset = s->sh.beta_offset;
2301 s->deblock[ctb_addr_rs].tc_offset = s->sh.tc_offset;
2302 s->filter_slice_edges[ctb_addr_rs] = s->sh.slice_loop_filter_across_slices_enabled_flag;
2304 ret = hls_coding_quadtree(s, x_ctb, y_ctb, s->sps->log2_ctb_size, 0);
2307 more_data = !ff_hevc_end_of_slice_flag_decode(s);
2310 ff_hevc_save_states(s, ctb_addr_ts);
2311 ff_hevc_hls_filters(s, x_ctb, y_ctb, ctb_size);
2314 if (x_ctb + ctb_size >= s->sps->width &&
2315 y_ctb + ctb_size >= s->sps->height)
2316 ff_hevc_hls_filter(s, x_ctb, y_ctb);
2322 * @return AVERROR_INVALIDDATA if the packet is not a valid NAL unit,
2323 * 0 if the unit should be skipped, 1 otherwise
2325 static int hls_nal_unit(HEVCContext *s)
2327 GetBitContext *gb = &s->HEVClc.gb;
2330 if (get_bits1(gb) != 0)
2331 return AVERROR_INVALIDDATA;
2333 s->nal_unit_type = get_bits(gb, 6);
2335 nuh_layer_id = get_bits(gb, 6);
2336 s->temporal_id = get_bits(gb, 3) - 1;
2337 if (s->temporal_id < 0)
2338 return AVERROR_INVALIDDATA;
2340 av_log(s->avctx, AV_LOG_DEBUG,
2341 "nal_unit_type: %d, nuh_layer_id: %dtemporal_id: %d\n",
2342 s->nal_unit_type, nuh_layer_id, s->temporal_id);
2344 return nuh_layer_id == 0;
2347 static void restore_tqb_pixels(HEVCContext *s)
2349 int min_pu_size = 1 << s->sps->log2_min_pu_size;
2352 for (c_idx = 0; c_idx < 3; c_idx++) {
2353 ptrdiff_t stride = s->frame->linesize[c_idx];
2354 int hshift = s->sps->hshift[c_idx];
2355 int vshift = s->sps->vshift[c_idx];
2356 for (y = 0; y < s->sps->min_pu_height; y++) {
2357 for (x = 0; x < s->sps->min_pu_width; x++) {
2358 if (s->is_pcm[y * s->sps->min_pu_width + x]) {
2360 int len = min_pu_size >> hshift;
2361 uint8_t *src = &s->frame->data[c_idx][((y << s->sps->log2_min_pu_size) >> vshift) * stride + (((x << s->sps->log2_min_pu_size) >> hshift) << s->sps->pixel_shift)];
2362 uint8_t *dst = &s->sao_frame->data[c_idx][((y << s->sps->log2_min_pu_size) >> vshift) * stride + (((x << s->sps->log2_min_pu_size) >> hshift) << s->sps->pixel_shift)];
2363 for (n = 0; n < (min_pu_size >> vshift); n++) {
2364 memcpy(dst, src, len);
2374 static int set_side_data(HEVCContext *s)
2376 AVFrame *out = s->ref->frame;
2378 if (s->sei_frame_packing_present &&
2379 s->frame_packing_arrangement_type >= 3 &&
2380 s->frame_packing_arrangement_type <= 5 &&
2381 s->content_interpretation_type > 0 &&
2382 s->content_interpretation_type < 3) {
2383 AVStereo3D *stereo = av_stereo3d_create_side_data(out);
2385 return AVERROR(ENOMEM);
2387 switch (s->frame_packing_arrangement_type) {
2389 if (s->quincunx_subsampling)
2390 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
2392 stereo->type = AV_STEREO3D_SIDEBYSIDE;
2395 stereo->type = AV_STEREO3D_TOPBOTTOM;
2398 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
2402 if (s->content_interpretation_type == 2)
2403 stereo->flags = AV_STEREO3D_FLAG_INVERT;
2406 if (s->sei_display_orientation_present &&
2407 (s->sei_anticlockwise_rotation || s->sei_hflip || s->sei_vflip)) {
2408 double angle = s->sei_anticlockwise_rotation * 360 / (double) (1 << 16);
2409 AVFrameSideData *rotation = av_frame_new_side_data(out,
2410 AV_FRAME_DATA_DISPLAYMATRIX,
2411 sizeof(int32_t) * 9);
2413 return AVERROR(ENOMEM);
2415 av_display_rotation_set((int32_t *)rotation->data, angle);
2416 av_display_matrix_flip((int32_t *)rotation->data,
2417 s->sei_hflip, s->sei_vflip);
2423 static int hevc_frame_start(HEVCContext *s)
2425 HEVCLocalContext *lc = &s->HEVClc;
2428 memset(s->horizontal_bs, 0, 2 * s->bs_width * (s->bs_height + 1));
2429 memset(s->vertical_bs, 0, 2 * s->bs_width * (s->bs_height + 1));
2430 memset(s->cbf_luma, 0, s->sps->min_tb_width * s->sps->min_tb_height);
2431 memset(s->is_pcm, 0, s->sps->min_pu_width * s->sps->min_pu_height);
2433 lc->start_of_tiles_x = 0;
2435 s->first_nal_type = s->nal_unit_type;
2437 if (s->pps->tiles_enabled_flag)
2438 lc->end_of_tiles_x = s->pps->column_width[0] << s->sps->log2_ctb_size;
2440 ret = ff_hevc_set_new_ref(s, s->sps->sao_enabled ? &s->sao_frame : &s->frame,
2445 ret = ff_hevc_frame_rps(s);
2447 av_log(s->avctx, AV_LOG_ERROR, "Error constructing the frame RPS.\n");
2451 s->ref->frame->key_frame = IS_IRAP(s);
2453 ret = set_side_data(s);
2457 av_frame_unref(s->output_frame);
2458 ret = ff_hevc_output_frame(s, s->output_frame, 0);
2462 ff_thread_finish_setup(s->avctx);
2468 ff_thread_report_progress(&s->ref->tf, INT_MAX, 0);
2473 static int decode_nal_unit(HEVCContext *s, const uint8_t *nal, int length)
2475 HEVCLocalContext *lc = &s->HEVClc;
2476 GetBitContext *gb = &lc->gb;
2477 int ctb_addr_ts, ret;
2479 ret = init_get_bits8(gb, nal, length);
2483 ret = hls_nal_unit(s);
2485 av_log(s->avctx, AV_LOG_ERROR, "Invalid NAL unit %d, skipping.\n",
2491 switch (s->nal_unit_type) {
2493 ret = ff_hevc_decode_nal_vps(s);
2498 ret = ff_hevc_decode_nal_sps(s);
2503 ret = ff_hevc_decode_nal_pps(s);
2507 case NAL_SEI_PREFIX:
2508 case NAL_SEI_SUFFIX:
2509 ret = ff_hevc_decode_nal_sei(s);
2520 case NAL_BLA_W_RADL:
2522 case NAL_IDR_W_RADL:
2529 ret = hls_slice_header(s);
2533 if (s->max_ra == INT_MAX) {
2534 if (s->nal_unit_type == NAL_CRA_NUT || IS_BLA(s)) {
2538 s->max_ra = INT_MIN;
2542 if ((s->nal_unit_type == NAL_RASL_R || s->nal_unit_type == NAL_RASL_N) &&
2543 s->poc <= s->max_ra) {
2547 if (s->nal_unit_type == NAL_RASL_R && s->poc > s->max_ra)
2548 s->max_ra = INT_MIN;
2551 if (s->sh.first_slice_in_pic_flag) {
2552 ret = hevc_frame_start(s);
2555 } else if (!s->ref) {
2556 av_log(s->avctx, AV_LOG_ERROR, "First slice in a frame missing.\n");
2560 if (s->nal_unit_type != s->first_nal_type) {
2561 av_log(s->avctx, AV_LOG_ERROR,
2562 "Non-matching NAL types of the VCL NALUs: %d %d\n",
2563 s->first_nal_type, s->nal_unit_type);
2564 return AVERROR_INVALIDDATA;
2567 if (!s->sh.dependent_slice_segment_flag &&
2568 s->sh.slice_type != I_SLICE) {
2569 ret = ff_hevc_slice_rpl(s);
2571 av_log(s->avctx, AV_LOG_WARNING,
2572 "Error constructing the reference lists for the current slice.\n");
2577 ctb_addr_ts = hls_slice_data(s);
2578 if (ctb_addr_ts >= (s->sps->ctb_width * s->sps->ctb_height)) {
2580 if ((s->pps->transquant_bypass_enable_flag ||
2581 (s->sps->pcm.loop_filter_disable_flag && s->sps->pcm_enabled_flag)) &&
2582 s->sps->sao_enabled)
2583 restore_tqb_pixels(s);
2586 if (ctb_addr_ts < 0) {
2593 s->seq_decode = (s->seq_decode + 1) & 0xff;
2594 s->max_ra = INT_MAX;
2600 av_log(s->avctx, AV_LOG_INFO,
2601 "Skipping NAL unit %d\n", s->nal_unit_type);
2606 if (s->avctx->err_recognition & AV_EF_EXPLODE)
2611 /* FIXME: This is adapted from ff_h264_decode_nal, avoiding duplication
2612 * between these functions would be nice. */
2613 static int extract_rbsp(const uint8_t *src, int length,
2619 #define STARTCODE_TEST \
2620 if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
2621 if (src[i + 2] != 3) { \
2622 /* startcode, so we must be past the end */ \
2627 #if HAVE_FAST_UNALIGNED
2628 #define FIND_FIRST_ZERO \
2629 if (i > 0 && !src[i]) \
2634 for (i = 0; i + 1 < length; i += 9) {
2635 if (!((~AV_RN64A(src + i) &
2636 (AV_RN64A(src + i) - 0x0100010001000101ULL)) &
2637 0x8000800080008080ULL))
2644 for (i = 0; i + 1 < length; i += 5) {
2645 if (!((~AV_RN32A(src + i) &
2646 (AV_RN32A(src + i) - 0x01000101U)) &
2653 #endif /* HAVE_FAST_64BIT */
2655 for (i = 0; i + 1 < length; i += 2) {
2658 if (i > 0 && src[i - 1] == 0)
2662 #endif /* HAVE_FAST_UNALIGNED */
2664 if (i >= length - 1) { // no escaped 0
2670 av_fast_malloc(&nal->rbsp_buffer, &nal->rbsp_buffer_size,
2671 length + FF_INPUT_BUFFER_PADDING_SIZE);
2672 if (!nal->rbsp_buffer)
2673 return AVERROR(ENOMEM);
2675 dst = nal->rbsp_buffer;
2677 memcpy(dst, src, i);
2679 while (si + 2 < length) {
2680 // remove escapes (very rare 1:2^22)
2681 if (src[si + 2] > 3) {
2682 dst[di++] = src[si++];
2683 dst[di++] = src[si++];
2684 } else if (src[si] == 0 && src[si + 1] == 0) {
2685 if (src[si + 2] == 3) { // escape
2691 } else // next start code
2695 dst[di++] = src[si++];
2698 dst[di++] = src[si++];
2701 memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2708 static int decode_nal_units(HEVCContext *s, const uint8_t *buf, int length)
2710 int i, consumed, ret = 0;
2715 /* split the input packet into NAL units, so we know the upper bound on the
2716 * number of slices in the frame */
2718 while (length >= 4) {
2720 int extract_length = 0;
2724 for (i = 0; i < s->nal_length_size; i++)
2725 extract_length = (extract_length << 8) | buf[i];
2726 buf += s->nal_length_size;
2727 length -= s->nal_length_size;
2729 if (extract_length > length) {
2730 av_log(s->avctx, AV_LOG_ERROR, "Invalid NAL unit size.\n");
2731 ret = AVERROR_INVALIDDATA;
2740 if (buf[0] != 0 || buf[1] != 0 || buf[2] != 1) {
2741 ret = AVERROR_INVALIDDATA;
2747 extract_length = length;
2750 if (s->nals_allocated < s->nb_nals + 1) {
2751 int new_size = s->nals_allocated + 1;
2752 HEVCNAL *tmp = av_realloc_array(s->nals, new_size, sizeof(*tmp));
2754 ret = AVERROR(ENOMEM);
2758 memset(s->nals + s->nals_allocated, 0,
2759 (new_size - s->nals_allocated) * sizeof(*tmp));
2760 s->nals_allocated = new_size;
2762 nal = &s->nals[s->nb_nals++];
2764 consumed = extract_rbsp(buf, extract_length, nal);
2770 ret = init_get_bits8(&s->HEVClc.gb, nal->data, nal->size);
2775 if (s->nal_unit_type == NAL_EOB_NUT ||
2776 s->nal_unit_type == NAL_EOS_NUT)
2783 /* parse the NAL units */
2784 for (i = 0; i < s->nb_nals; i++) {
2785 int ret = decode_nal_unit(s, s->nals[i].data, s->nals[i].size);
2787 av_log(s->avctx, AV_LOG_WARNING,
2788 "Error parsing NAL unit #%d.\n", i);
2795 ff_thread_report_progress(&s->ref->tf, INT_MAX, 0);
2800 static void print_md5(void *log_ctx, int level, uint8_t md5[16])
2803 for (i = 0; i < 16; i++)
2804 av_log(log_ctx, level, "%02"PRIx8, md5[i]);
2807 static int verify_md5(HEVCContext *s, AVFrame *frame)
2809 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
2814 return AVERROR(EINVAL);
2816 pixel_shift = desc->comp[0].depth_minus1 > 7;
2818 av_log(s->avctx, AV_LOG_DEBUG, "Verifying checksum for frame with POC %d: ",
2821 /* the checksums are LE, so we have to byteswap for >8bpp formats
2824 if (pixel_shift && !s->checksum_buf) {
2825 av_fast_malloc(&s->checksum_buf, &s->checksum_buf_size,
2826 FFMAX3(frame->linesize[0], frame->linesize[1],
2827 frame->linesize[2]));
2828 if (!s->checksum_buf)
2829 return AVERROR(ENOMEM);
2833 for (i = 0; frame->data[i]; i++) {
2834 int width = s->avctx->coded_width;
2835 int height = s->avctx->coded_height;
2836 int w = (i == 1 || i == 2) ? (width >> desc->log2_chroma_w) : width;
2837 int h = (i == 1 || i == 2) ? (height >> desc->log2_chroma_h) : height;
2840 av_md5_init(s->md5_ctx);
2841 for (j = 0; j < h; j++) {
2842 const uint8_t *src = frame->data[i] + j * frame->linesize[i];
2845 s->bdsp.bswap16_buf((uint16_t *) s->checksum_buf,
2846 (const uint16_t *) src, w);
2847 src = s->checksum_buf;
2850 av_md5_update(s->md5_ctx, src, w << pixel_shift);
2852 av_md5_final(s->md5_ctx, md5);
2854 if (!memcmp(md5, s->md5[i], 16)) {
2855 av_log (s->avctx, AV_LOG_DEBUG, "plane %d - correct ", i);
2856 print_md5(s->avctx, AV_LOG_DEBUG, md5);
2857 av_log (s->avctx, AV_LOG_DEBUG, "; ");
2859 av_log (s->avctx, AV_LOG_ERROR, "mismatching checksum of plane %d - ", i);
2860 print_md5(s->avctx, AV_LOG_ERROR, md5);
2861 av_log (s->avctx, AV_LOG_ERROR, " != ");
2862 print_md5(s->avctx, AV_LOG_ERROR, s->md5[i]);
2863 av_log (s->avctx, AV_LOG_ERROR, "\n");
2864 return AVERROR_INVALIDDATA;
2868 av_log(s->avctx, AV_LOG_DEBUG, "\n");
2873 static int hevc_decode_frame(AVCodecContext *avctx, void *data, int *got_output,
2877 HEVCContext *s = avctx->priv_data;
2880 ret = ff_hevc_output_frame(s, data, 1);
2889 ret = decode_nal_units(s, avpkt->data, avpkt->size);
2893 /* verify the SEI checksum */
2894 if (avctx->err_recognition & AV_EF_CRCCHECK && s->is_decoded &&
2896 ret = verify_md5(s, s->ref->frame);
2897 if (ret < 0 && avctx->err_recognition & AV_EF_EXPLODE) {
2898 ff_hevc_unref_frame(s, s->ref, ~0);
2904 if (s->is_decoded) {
2905 av_log(avctx, AV_LOG_DEBUG, "Decoded frame with POC %d.\n", s->poc);
2909 if (s->output_frame->buf[0]) {
2910 av_frame_move_ref(data, s->output_frame);
2917 static int hevc_ref_frame(HEVCContext *s, HEVCFrame *dst, HEVCFrame *src)
2919 int ret = ff_thread_ref_frame(&dst->tf, &src->tf);
2923 dst->tab_mvf_buf = av_buffer_ref(src->tab_mvf_buf);
2924 if (!dst->tab_mvf_buf)
2926 dst->tab_mvf = src->tab_mvf;
2928 dst->rpl_tab_buf = av_buffer_ref(src->rpl_tab_buf);
2929 if (!dst->rpl_tab_buf)
2931 dst->rpl_tab = src->rpl_tab;
2933 dst->rpl_buf = av_buffer_ref(src->rpl_buf);
2937 dst->poc = src->poc;
2938 dst->ctb_count = src->ctb_count;
2939 dst->window = src->window;
2940 dst->flags = src->flags;
2941 dst->sequence = src->sequence;
2945 ff_hevc_unref_frame(s, dst, ~0);
2946 return AVERROR(ENOMEM);
2949 static av_cold int hevc_decode_free(AVCodecContext *avctx)
2951 HEVCContext *s = avctx->priv_data;
2956 av_freep(&s->md5_ctx);
2958 av_frame_free(&s->tmp_frame);
2959 av_frame_free(&s->output_frame);
2961 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
2962 ff_hevc_unref_frame(s, &s->DPB[i], ~0);
2963 av_frame_free(&s->DPB[i].frame);
2966 for (i = 0; i < FF_ARRAY_ELEMS(s->vps_list); i++)
2967 av_buffer_unref(&s->vps_list[i]);
2968 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)
2969 av_buffer_unref(&s->sps_list[i]);
2970 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++)
2971 av_buffer_unref(&s->pps_list[i]);
2973 for (i = 0; i < s->nals_allocated; i++)
2974 av_freep(&s->nals[i].rbsp_buffer);
2976 s->nals_allocated = 0;
2981 static av_cold int hevc_init_context(AVCodecContext *avctx)
2983 HEVCContext *s = avctx->priv_data;
2988 s->tmp_frame = av_frame_alloc();
2992 s->output_frame = av_frame_alloc();
2993 if (!s->output_frame)
2996 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
2997 s->DPB[i].frame = av_frame_alloc();
2998 if (!s->DPB[i].frame)
3000 s->DPB[i].tf.f = s->DPB[i].frame;
3003 s->max_ra = INT_MAX;
3005 s->md5_ctx = av_md5_alloc();
3009 ff_bswapdsp_init(&s->bdsp);
3011 s->context_initialized = 1;
3016 hevc_decode_free(avctx);
3017 return AVERROR(ENOMEM);
3020 static int hevc_update_thread_context(AVCodecContext *dst,
3021 const AVCodecContext *src)
3023 HEVCContext *s = dst->priv_data;
3024 HEVCContext *s0 = src->priv_data;
3027 if (!s->context_initialized) {
3028 ret = hevc_init_context(dst);
3033 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
3034 ff_hevc_unref_frame(s, &s->DPB[i], ~0);
3035 if (s0->DPB[i].frame->buf[0]) {
3036 ret = hevc_ref_frame(s, &s->DPB[i], &s0->DPB[i]);
3042 for (i = 0; i < FF_ARRAY_ELEMS(s->vps_list); i++) {
3043 av_buffer_unref(&s->vps_list[i]);
3044 if (s0->vps_list[i]) {
3045 s->vps_list[i] = av_buffer_ref(s0->vps_list[i]);
3046 if (!s->vps_list[i])
3047 return AVERROR(ENOMEM);
3051 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++) {
3052 av_buffer_unref(&s->sps_list[i]);
3053 if (s0->sps_list[i]) {
3054 s->sps_list[i] = av_buffer_ref(s0->sps_list[i]);
3055 if (!s->sps_list[i])
3056 return AVERROR(ENOMEM);
3060 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++) {
3061 av_buffer_unref(&s->pps_list[i]);
3062 if (s0->pps_list[i]) {
3063 s->pps_list[i] = av_buffer_ref(s0->pps_list[i]);
3064 if (!s->pps_list[i])
3065 return AVERROR(ENOMEM);
3069 if (s->sps != s0->sps)
3070 ret = set_sps(s, s0->sps);
3072 s->seq_decode = s0->seq_decode;
3073 s->seq_output = s0->seq_output;
3074 s->pocTid0 = s0->pocTid0;
3075 s->max_ra = s0->max_ra;
3077 s->is_nalff = s0->is_nalff;
3078 s->nal_length_size = s0->nal_length_size;
3081 s->seq_decode = (s->seq_decode + 1) & 0xff;
3082 s->max_ra = INT_MAX;
3088 static int hevc_decode_extradata(HEVCContext *s)
3090 AVCodecContext *avctx = s->avctx;
3094 bytestream2_init(&gb, avctx->extradata, avctx->extradata_size);
3096 if (avctx->extradata_size > 3 &&
3097 (avctx->extradata[0] || avctx->extradata[1] ||
3098 avctx->extradata[2] > 1)) {
3099 /* It seems the extradata is encoded as hvcC format.
3100 * Temporarily, we support configurationVersion==0 until 14496-15 3rd
3101 * is finalized. When finalized, configurationVersion will be 1 and we
3102 * can recognize hvcC by checking if avctx->extradata[0]==1 or not. */
3103 int i, j, num_arrays, nal_len_size;
3107 bytestream2_skip(&gb, 21);
3108 nal_len_size = (bytestream2_get_byte(&gb) & 3) + 1;
3109 num_arrays = bytestream2_get_byte(&gb);
3111 /* nal units in the hvcC always have length coded with 2 bytes,
3112 * so put a fake nal_length_size = 2 while parsing them */
3113 s->nal_length_size = 2;
3115 /* Decode nal units from hvcC. */
3116 for (i = 0; i < num_arrays; i++) {
3117 int type = bytestream2_get_byte(&gb) & 0x3f;
3118 int cnt = bytestream2_get_be16(&gb);
3120 for (j = 0; j < cnt; j++) {
3121 // +2 for the nal size field
3122 int nalsize = bytestream2_peek_be16(&gb) + 2;
3123 if (bytestream2_get_bytes_left(&gb) < nalsize) {
3124 av_log(s->avctx, AV_LOG_ERROR,
3125 "Invalid NAL unit size in extradata.\n");
3126 return AVERROR_INVALIDDATA;
3129 ret = decode_nal_units(s, gb.buffer, nalsize);
3131 av_log(avctx, AV_LOG_ERROR,
3132 "Decoding nal unit %d %d from hvcC failed\n",
3136 bytestream2_skip(&gb, nalsize);
3140 /* Now store right nal length size, that will be used to parse
3142 s->nal_length_size = nal_len_size;
3145 ret = decode_nal_units(s, avctx->extradata, avctx->extradata_size);
3152 static av_cold int hevc_decode_init(AVCodecContext *avctx)
3154 HEVCContext *s = avctx->priv_data;
3157 ff_init_cabac_states();
3159 avctx->internal->allocate_progress = 1;
3161 ret = hevc_init_context(avctx);
3165 if (avctx->extradata_size > 0 && avctx->extradata) {
3166 ret = hevc_decode_extradata(s);
3168 hevc_decode_free(avctx);
3176 static av_cold int hevc_init_thread_copy(AVCodecContext *avctx)
3178 HEVCContext *s = avctx->priv_data;
3181 memset(s, 0, sizeof(*s));
3183 ret = hevc_init_context(avctx);
3190 static void hevc_decode_flush(AVCodecContext *avctx)
3192 HEVCContext *s = avctx->priv_data;
3193 ff_hevc_flush_dpb(s);
3194 s->max_ra = INT_MAX;
3197 #define OFFSET(x) offsetof(HEVCContext, x)
3198 #define PAR (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
3200 static const AVProfile profiles[] = {
3201 { FF_PROFILE_HEVC_MAIN, "Main" },
3202 { FF_PROFILE_HEVC_MAIN_10, "Main 10" },
3203 { FF_PROFILE_HEVC_MAIN_STILL_PICTURE, "Main Still Picture" },
3204 { FF_PROFILE_UNKNOWN },
3207 static const AVOption options[] = {
3208 { "apply_defdispwin", "Apply default display window from VUI", OFFSET(apply_defdispwin),
3209 AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, PAR },
3213 static const AVClass hevc_decoder_class = {
3214 .class_name = "HEVC decoder",
3215 .item_name = av_default_item_name,
3217 .version = LIBAVUTIL_VERSION_INT,
3220 AVCodec ff_hevc_decoder = {
3222 .long_name = NULL_IF_CONFIG_SMALL("HEVC (High Efficiency Video Coding)"),
3223 .type = AVMEDIA_TYPE_VIDEO,
3224 .id = AV_CODEC_ID_HEVC,
3225 .priv_data_size = sizeof(HEVCContext),
3226 .priv_class = &hevc_decoder_class,
3227 .init = hevc_decode_init,
3228 .close = hevc_decode_free,
3229 .decode = hevc_decode_frame,
3230 .flush = hevc_decode_flush,
3231 .update_thread_context = hevc_update_thread_context,
3232 .init_thread_copy = hevc_init_thread_copy,
3233 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY |
3234 CODEC_CAP_FRAME_THREADS,
3235 .profiles = NULL_IF_CONFIG_SMALL(profiles),