FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/hevc/refs.c
Date: 2025-07-15 19:03:42
Exec Total Coverage
Lines: 318 368 86.4%
Functions: 17 17 100.0%
Branches: 231 300 77.0%
Line Branch Exec Source
1 /*
2 * HEVC video decoder
3 *
4 * Copyright (C) 2012 - 2013 Guillaume Martres
5 * Copyright (C) 2012 - 2013 Gildas Cocherel
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include "libavutil/container_fifo.h"
25 #include "libavutil/mem.h"
26 #include "libavutil/stereo3d.h"
27
28 #include "decode.h"
29 #include "hevc.h"
30 #include "hevcdec.h"
31 #include "progressframe.h"
32 #include "thread.h"
33 #include "libavutil/refstruct.h"
34
35 399844 void ff_hevc_unref_frame(HEVCFrame *frame, int flags)
36 {
37 399844 frame->flags &= ~flags;
38
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 399844 if (!(frame->flags & ~HEVC_FRAME_FLAG_CORRUPT))
39 341220 frame->flags = 0;
40
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 399844 if (!frame->flags) {
41 341220 ff_progress_frame_unref(&frame->tf);
42 341220 av_frame_unref(frame->frame_grain);
43 341220 frame->needs_fg = 0;
44
45 341220 av_refstruct_unref(&frame->pps);
46 341220 av_refstruct_unref(&frame->tab_mvf);
47
48 341220 av_refstruct_unref(&frame->rpl);
49 341220 frame->nb_rpl_elems = 0;
50 341220 av_refstruct_unref(&frame->rpl_tab);
51 341220 frame->refPicList = NULL;
52
53 341220 av_refstruct_unref(&frame->hwaccel_picture_private);
54 }
55 399844 }
56
57 4716834 const RefPicList *ff_hevc_get_ref_list(const HEVCFrame *ref, int x0, int y0)
58 {
59 4716834 const HEVCSPS *sps = ref->pps->sps;
60 4716834 int x_cb = x0 >> sps->log2_ctb_size;
61 4716834 int y_cb = y0 >> sps->log2_ctb_size;
62 4716834 int pic_width_cb = sps->ctb_width;
63 4716834 int ctb_addr_ts = ref->pps->ctb_addr_rs_to_ts[y_cb * pic_width_cb + x_cb];
64 4716834 return &ref->rpl_tab[ctb_addr_ts]->refPicList[0];
65 }
66
67 851 void ff_hevc_clear_refs(HEVCLayerContext *l)
68 {
69 int i;
70
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 28083 for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++)
71 27232 ff_hevc_unref_frame(&l->DPB[i],
72 HEVC_FRAME_FLAG_SHORT_REF |
73 HEVC_FRAME_FLAG_LONG_REF);
74 851 }
75
76 9 void ff_hevc_flush_dpb(HEVCContext *s)
77 {
78
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 27 for (int layer = 0; layer < FF_ARRAY_ELEMS(s->layers); layer++) {
79 18 HEVCLayerContext *l = &s->layers[layer];
80
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 594 for (int i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++)
81 576 ff_hevc_unref_frame(&l->DPB[i], ~0);
82 }
83 9 }
84
85 50 static int replace_alpha_plane(AVFrame *alpha, AVFrame *base)
86 {
87 50 AVBufferRef *base_a = av_frame_get_plane_buffer(base, 3);
88 50 uintptr_t data = (uintptr_t)alpha->data[0];
89 int ret;
90
91
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 50 for (int i = 0; i < FF_ARRAY_ELEMS(alpha->buf) && alpha->buf[i]; i++) {
92 50 AVBufferRef *buf = alpha->buf[i];
93 50 uintptr_t buf_begin = (uintptr_t)buf->data;
94
95
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 50 if (data >= buf_begin && data < buf_begin + buf->size) {
96 50 ret = av_buffer_replace(&alpha->buf[i], base_a);
97
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 50 if (ret < 0)
98 ✗ return ret;
99
100 50 alpha->linesize[0] = base->linesize[3];
101 50 alpha->data[0] = base->data[3];
102
103 50 return 0;
104 }
105 }
106
107 ✗ return AVERROR_BUG;
108 }
109
110 10342 static HEVCFrame *alloc_frame(HEVCContext *s, HEVCLayerContext *l)
111 {
112 10342 const HEVCVPS *vps = l->sps->vps;
113 10342 const int view_id = vps->view_id[s->cur_layer];
114 int i, j, ret;
115
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 36253 for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
116 36253 HEVCFrame *frame = &l->DPB[i];
117
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 36253 if (frame->f)
118 25911 continue;
119
120 10342 ret = ff_progress_frame_alloc(s->avctx, &frame->tf);
121
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 10342 if (ret < 0)
122 ✗ return NULL;
123
124 // Add LCEVC SEI metadata here, as it's needed in get_buffer()
125
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 10342 if (s->sei.common.lcevc.info) {
126 ✗ HEVCSEILCEVC *lcevc = &s->sei.common.lcevc;
127 ✗ ret = ff_frame_new_side_data_from_buf(s->avctx, frame->tf.f,
128 AV_FRAME_DATA_LCEVC, &lcevc->info);
129 ✗ if (ret < 0)
130 ✗ goto fail;
131 }
132
133 // add view ID side data if it's nontrivial
134
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 10342 if (!ff_hevc_is_alpha_video(s) && (vps->nb_layers > 1 || view_id)) {
135 559 HEVCSEITDRDI *tdrdi = &s->sei.tdrdi;
136 559 AVFrameSideData *sd = av_frame_side_data_new(&frame->f->side_data,
137 559 &frame->f->nb_side_data,
138 AV_FRAME_DATA_VIEW_ID,
139 sizeof(int), 0);
140
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 559 if (!sd)
141 ✗ goto fail;
142 559 *(int*)sd->data = view_id;
143
144
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 559 if (tdrdi->num_ref_displays) {
145 AVStereo3D *stereo_3d;
146
147 22 stereo_3d = av_stereo3d_create_side_data(frame->f);
148
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 22 if (!stereo_3d)
149 ✗ goto fail;
150
151 22 stereo_3d->type = AV_STEREO3D_FRAMESEQUENCE;
152
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 22 if (tdrdi->left_view_id[0] == view_id)
153 11 stereo_3d->view = AV_STEREO3D_VIEW_LEFT;
154
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 11 else if (tdrdi->right_view_id[0] == view_id)
155 11 stereo_3d->view = AV_STEREO3D_VIEW_RIGHT;
156 else
157 ✗ stereo_3d->view = AV_STEREO3D_VIEW_UNSPEC;
158 }
159 }
160
161 10342 ret = ff_thread_get_buffer(s->avctx, frame->f, AV_GET_BUFFER_FLAG_REF);
162
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 10342 if (ret < 0)
163 ✗ goto fail;
164
165 10342 frame->rpl = av_refstruct_allocz(s->pkt.nb_nals * sizeof(*frame->rpl));
166
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 10342 if (!frame->rpl)
167 ✗ goto fail;
168 10342 frame->nb_rpl_elems = s->pkt.nb_nals;
169
170 10342 frame->tab_mvf = av_refstruct_pool_get(l->tab_mvf_pool);
171
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 10342 if (!frame->tab_mvf)
172 ✗ goto fail;
173
174 10342 frame->rpl_tab = av_refstruct_pool_get(l->rpl_tab_pool);
175
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 10342 if (!frame->rpl_tab)
176 ✗ goto fail;
177 10342 frame->ctb_count = l->sps->ctb_width * l->sps->ctb_height;
178
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 1683399 for (j = 0; j < frame->ctb_count; j++)
179 1673057 frame->rpl_tab[j] = frame->rpl;
180
181
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 10342 if (s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD)
182 15 frame->f->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
183
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 10342 if ((s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD) ||
184
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 10327 (s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_BOTTOM_FIELD))
185 17 frame->f->flags |= AV_FRAME_FLAG_INTERLACED;
186
187 10342 ret = ff_hwaccel_frame_priv_alloc(s->avctx, &frame->hwaccel_picture_private);
188
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 10342 if (ret < 0)
189 ✗ goto fail;
190
191 10342 frame->pps = av_refstruct_ref_c(s->pps);
192
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 10342 if (l != &s->layers[0] && ff_hevc_is_alpha_video(s)) {
193 50 AVFrame *alpha = frame->f;
194 50 AVFrame *base = s->layers[0].cur_frame->f;
195 50 ret = replace_alpha_plane(alpha, base);
196
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 50 if (ret < 0)
197 ✗ goto fail;
198 }
199
200 10342 return frame;
201 ✗ fail:
202 ✗ ff_hevc_unref_frame(frame, ~0);
203 ✗ return NULL;
204 }
205 ✗ av_log(s->avctx, AV_LOG_ERROR, "Error allocating frame, DPB full.\n");
206 ✗ return NULL;
207 }
208
209 10284 int ff_hevc_set_new_ref(HEVCContext *s, HEVCLayerContext *l, int poc)
210 {
211 HEVCFrame *ref;
212 int i;
213 int no_output;
214
215 /* check that this POC doesn't already exist */
216
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 339372 for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
217 329088 HEVCFrame *frame = &l->DPB[i];
218
219
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 329088 if (frame->f && frame->poc == poc) {
220 ✗ av_log(s->avctx, AV_LOG_ERROR, "Duplicate POC in a sequence: %d.\n",
221 poc);
222 ✗ return AVERROR_INVALIDDATA;
223 }
224 }
225
226 10284 ref = alloc_frame(s, l);
227
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 10284 if (!ref)
228 ✗ return AVERROR(ENOMEM);
229
230 10284 s->cur_frame = ref;
231 10284 l->cur_frame = ref;
232 10284 s->collocated_ref = NULL;
233
234
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 10284 ref->base_layer_frame = (l != &s->layers[0] && s->layers[0].cur_frame) ?
235 327 s->layers[0].cur_frame - s->layers[0].DPB : -1;
236
237
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 10284 no_output = !IS_IRAP(s) && (s->poc < s->recovery_poc) &&
238
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 20568 !(s->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
239 ✗ !(s->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL);
240
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 10284 if (s->sh.pic_output_flag && !no_output)
241 10278 ref->flags = HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_SHORT_REF;
242 else
243 6 ref->flags = HEVC_FRAME_FLAG_SHORT_REF;
244
245 10284 ref->poc = poc;
246 10284 ref->f->crop_left = l->sps->output_window.left_offset;
247 10284 ref->f->crop_right = l->sps->output_window.right_offset;
248 10284 ref->f->crop_top = l->sps->output_window.top_offset;
249 10284 ref->f->crop_bottom = l->sps->output_window.bottom_offset;
250
251 10284 return 0;
252 }
253
254 10284 static void unref_missing_refs(HEVCLayerContext *l)
255 {
256
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 339372 for (int i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
257 329088 HEVCFrame *frame = &l->DPB[i];
258
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 329088 if (frame->flags & HEVC_FRAME_FLAG_UNAVAILABLE) {
259 37 ff_hevc_unref_frame(frame, ~0);
260 }
261 }
262 10284 }
263
264 11030 int ff_hevc_output_frames(HEVCContext *s,
265 unsigned layers_active_decode, unsigned layers_active_output,
266 unsigned max_output, unsigned max_dpb, int discard)
267 {
268 10143 while (1) {
269 21173 int nb_dpb[HEVC_VPS_MAX_LAYERS] = { 0 };
270 21173 int nb_output = 0;
271 21173 int min_poc = INT_MAX;
272 21173 int min_layer = -1;
273 21173 int min_idx, ret = 0;
274
275
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 63519 for (int layer = 0; layer < FF_ARRAY_ELEMS(s->layers); layer++) {
276 42346 HEVCLayerContext *l = &s->layers[layer];
277
278
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 42346 if (!(layers_active_decode & (1 << layer)))
279 20249 continue;
280
281
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 729201 for (int i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
282 707104 HEVCFrame *frame = &l->DPB[i];
283
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 707104 if (frame->flags & HEVC_FRAME_FLAG_OUTPUT) {
284 // nb_output counts AUs with an output-pending frame
285 // in at least one layer
286
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 56722 if (!(frame->base_layer_frame >= 0 &&
287
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 2357 (s->layers[0].DPB[frame->base_layer_frame].flags & HEVC_FRAME_FLAG_OUTPUT)))
288 54704 nb_output++;
289
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 56722 if (min_layer < 0 || frame->poc < min_poc) {
290 30468 min_poc = frame->poc;
291 30468 min_idx = i;
292 30468 min_layer = layer;
293 }
294 }
295 707104 nb_dpb[layer] += !!frame->flags;
296 }
297 }
298
299
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 21173 if (nb_output > max_output ||
300 7943 (nb_output &&
301
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 7943 (nb_dpb[0] > max_dpb || nb_dpb[1] > max_dpb))) {
302 10143 HEVCFrame *frame = &s->layers[min_layer].DPB[min_idx];
303
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 10143 AVFrame *f = frame->needs_fg ? frame->frame_grain : frame->f;
304
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 10143 int output = !discard && (layers_active_output & (1 << min_layer));
305
306
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 10143 if (output) {
307
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 10064 if (frame->flags & HEVC_FRAME_FLAG_CORRUPT)
308 51 f->flags |= AV_FRAME_FLAG_CORRUPT;
309 10064 f->pkt_dts = s->pkt_dts;
310 10064 ret = av_container_fifo_write(s->output_fifo, f, AV_CONTAINER_FIFO_FLAG_REF);
311 }
312 10143 ff_hevc_unref_frame(frame, HEVC_FRAME_FLAG_OUTPUT);
313
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 10143 if (ret < 0)
314 11030 return ret;
315
316
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 10143 av_log(s->avctx, AV_LOG_DEBUG, "%s frame with POC %d/%d.\n",
317 output ? "Output" : "Discarded", min_layer, frame->poc);
318 10143 continue;
319 }
320 11030 return 0;
321 }
322 }
323
324 19078 static int init_slice_rpl(HEVCContext *s)
325 {
326 19078 HEVCFrame *frame = s->cur_frame;
327 19078 int ctb_count = frame->ctb_count;
328 19078 int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[s->sh.slice_segment_addr];
329 int i;
330
331
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 19078 if (s->slice_idx >= frame->nb_rpl_elems)
332 ✗ return AVERROR_INVALIDDATA;
333
334
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 2141350 for (i = ctb_addr_ts; i < ctb_count; i++)
335 2122272 frame->rpl_tab[i] = frame->rpl + s->slice_idx;
336
337 19078 frame->refPicList = (RefPicList *)frame->rpl_tab[ctb_addr_ts];
338
339 19078 return 0;
340 }
341
342 19078 int ff_hevc_slice_rpl(HEVCContext *s)
343 {
344 19078 SliceHeader *sh = &s->sh;
345
346
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 19078 uint8_t nb_list = sh->slice_type == HEVC_SLICE_B ? 2 : 1;
347 uint8_t list_idx;
348 int i, j, ret;
349
350 19078 ret = init_slice_rpl(s);
351
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 19078 if (ret < 0)
352 ✗ return ret;
353
354 19078 if (!(s->rps[ST_CURR_BEF].nb_refs + s->rps[ST_CURR_AFT].nb_refs +
355 19078 s->rps[LT_CURR].nb_refs +
356
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 19078 s->rps[INTER_LAYER0].nb_refs + s->rps[INTER_LAYER1].nb_refs) &&
357 ✗ !s->pps->pps_curr_pic_ref_enabled_flag) {
358 ✗ av_log(s->avctx, AV_LOG_ERROR, "Zero refs in the frame RPS.\n");
359 ✗ return AVERROR_INVALIDDATA;
360 }
361
362
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 53307 for (list_idx = 0; list_idx < nb_list; list_idx++) {
363 34229 RefPicList rpl_tmp = { { 0 } };
364 34229 RefPicList *rpl = &s->cur_frame->refPicList[list_idx];
365
366 /* The order of the elements is
367 * ST_CURR_BEF - INTER_LAYER0 - ST_CURR_AFT - LT_CURR - INTER_LAYER1 for the L0 and
368 * ST_CURR_AFT - INTER_LAYER1 - ST_CURR_BEF - LT_CURR - INTER_LAYER0 for the L1 */
369 102687 int cand_lists[] = { list_idx ? ST_CURR_AFT : ST_CURR_BEF,
370
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 34229 list_idx ? INTER_LAYER1 : INTER_LAYER0,
371 34229 list_idx ? ST_CURR_BEF : ST_CURR_AFT,
372 LT_CURR,
373
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 34229 list_idx ? INTER_LAYER0 : INTER_LAYER1
374 };
375
376 /* concatenate the candidate lists for the current frame */
377
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 68476 while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) {
378
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 205482 for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) {
379 171235 RefPicList *rps = &s->rps[cand_lists[i]];
380
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 294868 for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < HEVC_MAX_REFS; j++) {
381 123633 rpl_tmp.list[rpl_tmp.nb_refs] = rps->list[j];
382 123633 rpl_tmp.ref[rpl_tmp.nb_refs] = rps->ref[j];
383 // multiview inter-layer refs are treated as long-term here,
384 // cf. G.8.1.3
385 369859 rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = cand_lists[i] == LT_CURR ||
386
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 245837 cand_lists[i] == INTER_LAYER0 ||
387
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 122204 cand_lists[i] == INTER_LAYER1;
388 123633 rpl_tmp.nb_refs++;
389 }
390 }
391 // Construct RefPicList0, RefPicList1 (8-8, 8-10)
392
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 34247 if (s->pps->pps_curr_pic_ref_enabled_flag && rpl_tmp.nb_refs < HEVC_MAX_REFS) {
393 ✗ rpl_tmp.list[rpl_tmp.nb_refs] = s->cur_frame->poc;
394 ✗ rpl_tmp.ref[rpl_tmp.nb_refs] = s->cur_frame;
395 ✗ rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = 1;
396 ✗ rpl_tmp.nb_refs++;
397 }
398 }
399
400 /* reorder the references if necessary */
401
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 34229 if (sh->rpl_modification_flag[list_idx]) {
402
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 6454 for (i = 0; i < sh->nb_refs[list_idx]; i++) {
403 4554 int idx = sh->list_entry_lx[list_idx][i];
404
405
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 4554 if (idx >= rpl_tmp.nb_refs) {
406 ✗ av_log(s->avctx, AV_LOG_ERROR, "Invalid reference index.\n");
407 ✗ return AVERROR_INVALIDDATA;
408 }
409
410 4554 rpl->list[i] = rpl_tmp.list[idx];
411 4554 rpl->ref[i] = rpl_tmp.ref[idx];
412 4554 rpl->isLongTerm[i] = rpl_tmp.isLongTerm[idx];
413 4554 rpl->nb_refs++;
414 }
415 } else {
416 32329 memcpy(rpl, &rpl_tmp, sizeof(*rpl));
417 32329 rpl->nb_refs = FFMIN(rpl->nb_refs, sh->nb_refs[list_idx]);
418 }
419
420 // 8-9
421
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 34229 if (s->pps->pps_curr_pic_ref_enabled_flag &&
422 ✗ !sh->rpl_modification_flag[list_idx] &&
423 ✗ rpl_tmp.nb_refs > sh->nb_refs[L0]) {
424 ✗ rpl->list[sh->nb_refs[L0] - 1] = s->cur_frame->poc;
425 ✗ rpl->ref[sh->nb_refs[L0] - 1] = s->cur_frame;
426 }
427
428
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 34229 if (sh->collocated_list == list_idx &&
429
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 19077 sh->collocated_ref_idx < rpl->nb_refs)
430 19077 s->collocated_ref = rpl->ref[sh->collocated_ref_idx];
431 }
432
433 19078 return 0;
434 }
435
436 37293 static HEVCFrame *find_ref_idx(HEVCContext *s, HEVCLayerContext *l,
437 int poc, uint8_t use_msb)
438 {
439
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 37293 int mask = use_msb ? ~0 : (1 << l->sps->log2_max_poc_lsb) - 1;
440 int i;
441
442
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 152377 for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
443 152319 HEVCFrame *ref = &l->DPB[i];
444
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 152319 if (ref->f) {
445
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 147529 if ((ref->poc & mask) == poc && (use_msb || ref->poc != s->poc))
446 37235 return ref;
447 }
448 }
449
450
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 58 if (s->nal_unit_type != HEVC_NAL_CRA_NUT && !IS_BLA(s))
451 20 av_log(s->avctx, AV_LOG_ERROR,
452 "Could not find ref with POC %d\n", poc);
453 58 return NULL;
454 }
455
456 356097 static void mark_ref(HEVCFrame *frame, int flag)
457 {
458 356097 frame->flags &= ~(HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF);
459 356097 frame->flags |= flag;
460 356097 }
461
462 58 static HEVCFrame *generate_missing_ref(HEVCContext *s, HEVCLayerContext *l, int poc)
463 {
464 HEVCFrame *frame;
465 int i, y;
466
467 58 frame = alloc_frame(s, l);
468
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 58 if (!frame)
469 ✗ return NULL;
470
471
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 58 if (!s->avctx->hwaccel) {
472
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 58 if (!l->sps->pixel_shift) {
473
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 152 for (i = 0; frame->f->data[i]; i++)
474 114 memset(frame->f->data[i], 1 << (l->sps->bit_depth - 1),
475 114 frame->f->linesize[i] * AV_CEIL_RSHIFT(l->sps->height, l->sps->vshift[i]));
476 } else {
477
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 80 for (i = 0; frame->f->data[i]; i++)
478
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 71484 for (y = 0; y < (l->sps->height >> l->sps->vshift[i]); y++) {
479 71424 uint8_t *dst = frame->f->data[i] + y * frame->f->linesize[i];
480 71424 AV_WN16(dst, 1 << (l->sps->bit_depth - 1));
481 71424 av_memcpy_backptr(dst + 2, 2, 2*(l->sps->width >> l->sps->hshift[i]) - 2);
482 }
483 }
484 }
485
486 58 frame->poc = poc;
487 58 frame->flags = HEVC_FRAME_FLAG_UNAVAILABLE;
488
489
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 58 if (s->avctx->active_thread_type == FF_THREAD_FRAME)
490 ✗ ff_progress_frame_report(&frame->tf, INT_MAX);
491
492 58 return frame;
493 }
494
495 /* add a reference with the given poc to the list and mark it as used in DPB */
496 37293 static int add_candidate_ref(HEVCContext *s, HEVCLayerContext *l,
497 RefPicList *list,
498 int poc, int ref_flag, uint8_t use_msb)
499 {
500 37293 HEVCFrame *ref = find_ref_idx(s, l, poc, use_msb);
501
502
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 37293 if (ref == s->cur_frame || list->nb_refs >= HEVC_MAX_REFS)
503 ✗ return AVERROR_INVALIDDATA;
504
505
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 37293 if (!IS_IRAP(s)) {
506
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 36570 int ref_corrupt = !ref || ref->flags & (HEVC_FRAME_FLAG_CORRUPT |
507 HEVC_FRAME_FLAG_UNAVAILABLE);
508
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 36570 int recovering = HEVC_IS_RECOVERING(s);
509
510
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 36570 if (ref_corrupt && !recovering) {
511
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 137 if (!(s->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
512 ✗ !(s->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL))
513 ✗ return AVERROR_INVALIDDATA;
514
515 137 s->cur_frame->flags |= HEVC_FRAME_FLAG_CORRUPT;
516 }
517 }
518
519
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 37293 if (!ref) {
520 58 ref = generate_missing_ref(s, l, poc);
521
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 58 if (!ref)
522 ✗ return AVERROR(ENOMEM);
523 }
524
525 37293 list->list[list->nb_refs] = ref->poc;
526 37293 list->ref[list->nb_refs] = ref;
527 37293 list->nb_refs++;
528
529 37293 mark_ref(ref, ref_flag);
530 37293 return 0;
531 }
532
533 10284 int ff_hevc_frame_rps(HEVCContext *s, HEVCLayerContext *l)
534 {
535 10284 const ShortTermRPS *short_rps = s->sh.short_term_rps;
536 10284 const LongTermRPS *long_rps = &s->sh.long_term_rps;
537 10284 RefPicList *rps = s->rps;
538 10284 int i, ret = 0;
539
540 10284 unref_missing_refs(l);
541
542 /* clear the reference flags on all frames except the current one */
543
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 339372 for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++) {
544 329088 HEVCFrame *frame = &l->DPB[i];
545
546
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 329088 if (frame == s->cur_frame)
547 10284 continue;
548
549 318804 mark_ref(frame, 0);
550 }
551
552
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 82272 for (i = 0; i < NB_RPS_TYPE; i++)
553 71988 rps[i].nb_refs = 0;
554
555
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 10284 if (!short_rps)
556 428 goto inter_layer;
557
558 /* add the short refs */
559
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 45356 for (i = 0; i < short_rps->num_delta_pocs; i++) {
560 35500 int poc = s->poc + short_rps->delta_poc[i];
561 int list;
562
563
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 35500 if (!(short_rps->used & (1 << i)))
564 1766 list = ST_FOLL;
565
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 33734 else if (i < short_rps->num_negative_pics)
566 24462 list = ST_CURR_BEF;
567 else
568 9272 list = ST_CURR_AFT;
569
570 35500 ret = add_candidate_ref(s, l, &rps[list], poc,
571 HEVC_FRAME_FLAG_SHORT_REF, 1);
572
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 35500 if (ret < 0)
573 ✗ goto fail;
574 }
575
576 /* add the long refs */
577
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 11417 for (i = 0; i < long_rps->nb_refs; i++) {
578 1561 int poc = long_rps->poc[i];
579
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 1561 int list = long_rps->used[i] ? LT_CURR : LT_FOLL;
580
581 1561 ret = add_candidate_ref(s, l, &rps[list], poc,
582 1561 HEVC_FRAME_FLAG_LONG_REF, long_rps->poc_msb_present[i]);
583
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 1561 if (ret < 0)
584 ✗ goto fail;
585 }
586
587 9856 inter_layer:
588 /* add inter-layer refs */
589
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 10284 if (s->sh.inter_layer_pred) {
590 232 HEVCLayerContext *l0 = &s->layers[0];
591
592
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 232 av_assert0(l != l0);
593
594 /* Given the assumption of at most two layers, refPicSet0Flag is
595 * always 1, so only RefPicSetInterLayer0 can ever contain a frame. */
596
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 232 if (l0->cur_frame) {
597 // inter-layer refs are treated as short-term here, cf. F.8.1.6
598 232 ret = add_candidate_ref(s, l0, &rps[INTER_LAYER0], l0->cur_frame->poc,
599 HEVC_FRAME_FLAG_SHORT_REF, 1);
600
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 232 if (ret < 0)
601 ✗ goto fail;
602 }
603 }
604
605 10284 fail:
606 /* release any frames that are now unused */
607
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 339372 for (i = 0; i < FF_ARRAY_ELEMS(l->DPB); i++)
608 329088 ff_hevc_unref_frame(&l->DPB[i], 0);
609
610 10284 return ret;
611 }
612
613 19164 int ff_hevc_frame_nb_refs(const SliceHeader *sh, const HEVCPPS *pps,
614 unsigned layer_idx)
615 {
616 19164 int ret = 0;
617 int i;
618 19164 const ShortTermRPS *rps = sh->short_term_rps;
619 19164 const LongTermRPS *long_rps = &sh->long_term_rps;
620
621
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 19164 if (rps) {
622
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 65849 for (i = 0; i < rps->num_negative_pics; i++)
623 46692 ret += !!(rps->used & (1 << i));
624
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 40231 for (; i < rps->num_delta_pocs; i++)
625 21074 ret += !!(rps->used & (1 << i));
626 }
627
628
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 19164 if (long_rps) {
629
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 20585 for (i = 0; i < long_rps->nb_refs; i++)
630 1421 ret += !!long_rps->used[i];
631 }
632
633
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 19164 if (sh->inter_layer_pred) {
634
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 232 av_assert0(pps->sps->vps->num_direct_ref_layers[layer_idx] < 2);
635 232 ret++;
636 }
637
638
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 19164 if (pps->pps_curr_pic_ref_enabled_flag)
639 ✗ ret++;
640
641 19164 return ret;
642 }
643