FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/hevc_refs.c
Date: 2024-03-29 01:21:52
Exec Total Coverage
Lines: 279 315 88.6%
Functions: 17 17 100.0%
Branches: 201 250 80.4%

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/avassert.h"
25
26 #include "decode.h"
27 #include "thread.h"
28 #include "hevc.h"
29 #include "hevcdec.h"
30 #include "refstruct.h"
31 #include "threadframe.h"
32
33 342016 void ff_hevc_unref_frame(HEVCFrame *frame, int flags)
34 {
35 /* frame->frame can be NULL if context init failed */
36
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342016 if (!frame->frame || !frame->frame->buf[0])
37 276882 return;
38
39 65134 frame->flags &= ~flags;
40
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65134 if (!frame->flags) {
41 9666 ff_thread_release_ext_buffer(&frame->tf);
42 9666 av_frame_unref(frame->frame_grain);
43 9666 frame->needs_fg = 0;
44
45 9666 ff_refstruct_unref(&frame->tab_mvf);
46
47 9666 ff_refstruct_unref(&frame->rpl);
48 9666 frame->nb_rpl_elems = 0;
49 9666 ff_refstruct_unref(&frame->rpl_tab);
50 9666 frame->refPicList = NULL;
51
52 9666 ff_refstruct_unref(&frame->hwaccel_picture_private);
53 }
54 }
55
56 4576760 const RefPicList *ff_hevc_get_ref_list(const HEVCContext *s,
57 const HEVCFrame *ref, int x0, int y0)
58 {
59 4576760 int x_cb = x0 >> s->ps.sps->log2_ctb_size;
60 4576760 int y_cb = y0 >> s->ps.sps->log2_ctb_size;
61 4576760 int pic_width_cb = s->ps.sps->ctb_width;
62 4576760 int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[y_cb * pic_width_cb + x_cb];
63 4576760 return &ref->rpl_tab[ctb_addr_ts]->refPicList[0];
64 }
65
66 767 void ff_hevc_clear_refs(HEVCContext *s)
67 {
68 int i;
69
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25311 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
70 24544 ff_hevc_unref_frame(&s->DPB[i],
71 HEVC_FRAME_FLAG_SHORT_REF |
72 HEVC_FRAME_FLAG_LONG_REF);
73 767 }
74
75 8 void ff_hevc_flush_dpb(HEVCContext *s)
76 {
77 int i;
78
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264 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
79 256 ff_hevc_unref_frame(&s->DPB[i], ~0);
80 8 }
81
82 9599 static HEVCFrame *alloc_frame(HEVCContext *s)
83 {
84 int i, j, ret;
85
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33853 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
86 33853 HEVCFrame *frame = &s->DPB[i];
87
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33853 if (frame->frame->buf[0])
88 24254 continue;
89
90 9599 ret = ff_thread_get_ext_buffer(s->avctx, &frame->tf,
91 AV_GET_BUFFER_FLAG_REF);
92
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9599 if (ret < 0)
93 return NULL;
94
95 9599 frame->rpl = ff_refstruct_allocz(s->pkt.nb_nals * sizeof(*frame->rpl));
96
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9599 if (!frame->rpl)
97 goto fail;
98 9599 frame->nb_rpl_elems = s->pkt.nb_nals;
99
100 9599 frame->tab_mvf = ff_refstruct_pool_get(s->tab_mvf_pool);
101
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9599 if (!frame->tab_mvf)
102 goto fail;
103
104 9599 frame->rpl_tab = ff_refstruct_pool_get(s->rpl_tab_pool);
105
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9599 if (!frame->rpl_tab)
106 goto fail;
107 9599 frame->ctb_count = s->ps.sps->ctb_width * s->ps.sps->ctb_height;
108
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1500544 for (j = 0; j < frame->ctb_count; j++)
109 1490945 frame->rpl_tab[j] = frame->rpl;
110
111
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9599 if (s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD)
112 15 frame->frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
113
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9599 if ((s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD) ||
114
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9584 (s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_BOTTOM_FIELD))
115 17 frame->frame->flags |= AV_FRAME_FLAG_INTERLACED;
116
117 9599 ret = ff_hwaccel_frame_priv_alloc(s->avctx, &frame->hwaccel_picture_private);
118
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9599 if (ret < 0)
119 goto fail;
120
121 9599 return frame;
122 fail:
123 ff_hevc_unref_frame(frame, ~0);
124 return NULL;
125 }
126 av_log(s->avctx, AV_LOG_ERROR, "Error allocating frame, DPB full.\n");
127 return NULL;
128 }
129
130 9535 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc)
131 {
132 HEVCFrame *ref;
133 int i;
134
135 /* check that this POC doesn't already exist */
136
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314655 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
137 305120 HEVCFrame *frame = &s->DPB[i];
138
139
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305120 if (frame->frame->buf[0] && frame->sequence == s->seq_decode &&
140
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45417 frame->poc == poc) {
141 av_log(s->avctx, AV_LOG_ERROR, "Duplicate POC in a sequence: %d.\n",
142 poc);
143 return AVERROR_INVALIDDATA;
144 }
145 }
146
147 9535 ref = alloc_frame(s);
148
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9535 if (!ref)
149 return AVERROR(ENOMEM);
150
151 9535 *frame = ref->frame;
152 9535 s->ref = ref;
153 9535 s->collocated_ref = NULL;
154
155
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9535 if (s->sh.pic_output_flag)
156 9529 ref->flags = HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_SHORT_REF;
157 else
158 6 ref->flags = HEVC_FRAME_FLAG_SHORT_REF;
159
160 9535 ref->poc = poc;
161 9535 ref->sequence = s->seq_decode;
162 9535 ref->frame->crop_left = s->ps.sps->output_window.left_offset;
163 9535 ref->frame->crop_right = s->ps.sps->output_window.right_offset;
164 9535 ref->frame->crop_top = s->ps.sps->output_window.top_offset;
165 9535 ref->frame->crop_bottom = s->ps.sps->output_window.bottom_offset;
166
167 9535 return 0;
168 }
169
170 9154 static void unref_missing_refs(HEVCContext *s)
171 {
172
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302082 for (int i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
173 292928 HEVCFrame *frame = &s->DPB[i];
174
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292928 if (frame->sequence == HEVC_SEQUENCE_COUNTER_INVALID) {
175 164 ff_hevc_unref_frame(frame, ~0);
176 }
177 }
178 9154 }
179
180 10023 int ff_hevc_output_frame(HEVCContext *s, AVFrame *out, int flush)
181 {
182
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10023 if (IS_IRAP(s) && s->no_rasl_output_flag == 1) {
183 const static int mask = HEVC_FRAME_FLAG_BUMPING | HEVC_FRAME_FLAG_OUTPUT;
184
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13431 for (int i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
185 13024 HEVCFrame *frame = &s->DPB[i];
186
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13024 if ((frame->flags & mask) == HEVC_FRAME_FLAG_OUTPUT &&
187
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466 frame->sequence != s->seq_decode) {
188
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65 if (s->sh.no_output_of_prior_pics_flag == 1)
189 26 ff_hevc_unref_frame(frame, HEVC_FRAME_FLAG_OUTPUT);
190 else
191 39 frame->flags |= HEVC_FRAME_FLAG_BUMPING;
192 }
193 }
194 }
195 781 do {
196 10804 int nb_output = 0;
197 10804 int min_poc = INT_MAX;
198 int i, min_idx, ret;
199
200
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356532 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
201 345728 HEVCFrame *frame = &s->DPB[i];
202
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345728 if ((frame->flags & HEVC_FRAME_FLAG_OUTPUT) &&
203
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32947 frame->sequence == s->seq_output) {
204 32016 nb_output++;
205
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32016 if (frame->poc < min_poc || nb_output == 1) {
206 16906 min_poc = frame->poc;
207 16906 min_idx = i;
208 }
209 }
210 }
211
212 /* wait for more frames before output */
213
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10804 if (!flush && s->seq_output == s->seq_decode && s->ps.sps &&
214
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9491 nb_output <= s->ps.sps->temporal_layer[s->ps.sps->max_sub_layers - 1].num_reorder_pics)
215 468 return 0;
216
217
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10336 if (nb_output) {
218 9378 HEVCFrame *frame = &s->DPB[min_idx];
219
220
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9378 ret = av_frame_ref(out, frame->needs_fg ? frame->frame_grain : frame->frame);
221
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9378 if (frame->flags & HEVC_FRAME_FLAG_BUMPING)
222 2078 ff_hevc_unref_frame(frame, HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_BUMPING);
223 else
224 7300 ff_hevc_unref_frame(frame, HEVC_FRAME_FLAG_OUTPUT);
225
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9378 if (ret < 0)
226 return ret;
227
228
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9378 if (frame->needs_fg && (ret = av_frame_copy_props(out, frame->frame)) < 0)
229 return ret;
230
231
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9378 if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN))
232 9378 av_frame_remove_side_data(out, AV_FRAME_DATA_FILM_GRAIN_PARAMS);
233
234 9378 av_log(s->avctx, AV_LOG_DEBUG,
235 "Output frame with POC %d.\n", frame->poc);
236 9378 return 1;
237 }
238
239
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958 if (s->seq_output != s->seq_decode)
240 781 s->seq_output = (s->seq_output + 1) & HEVC_SEQUENCE_COUNTER_MASK;
241 else
242 177 break;
243 } while (1);
244
245 177 return 0;
246 }
247
248 8987 void ff_hevc_bump_frame(HEVCContext *s)
249 {
250 8987 int dpb = 0;
251 8987 int min_poc = INT_MAX;
252 int i;
253
254
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296571 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
255 287584 HEVCFrame *frame = &s->DPB[i];
256
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287584 if ((frame->flags) &&
257
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47693 frame->sequence == s->seq_output &&
258
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47562 frame->poc != s->poc) {
259 38613 dpb++;
260 }
261 }
262
263
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8987 if (s->ps.sps && dpb >= s->ps.sps->temporal_layer[s->ps.sps->max_sub_layers - 1].max_dec_pic_buffering) {
264
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56001 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
265 54304 HEVCFrame *frame = &s->DPB[i];
266
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54304 if ((frame->flags) &&
267
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10318 frame->sequence == s->seq_output &&
268
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10318 frame->poc != s->poc) {
269
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8621 if (frame->flags == HEVC_FRAME_FLAG_OUTPUT && frame->poc < min_poc) {
270 1444 min_poc = frame->poc;
271 }
272 }
273 }
274
275
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56001 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
276 54304 HEVCFrame *frame = &s->DPB[i];
277
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54304 if (frame->flags & HEVC_FRAME_FLAG_OUTPUT &&
278
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6790 frame->sequence == s->seq_output &&
279
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6790 frame->poc <= min_poc) {
280 2789 frame->flags |= HEVC_FRAME_FLAG_BUMPING;
281 }
282 }
283
284 1697 dpb--;
285 }
286 8987 }
287
288 18436 static int init_slice_rpl(HEVCContext *s)
289 {
290 18436 HEVCFrame *frame = s->ref;
291 18436 int ctb_count = frame->ctb_count;
292 18436 int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[s->sh.slice_segment_addr];
293 int i;
294
295
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18436 if (s->slice_idx >= frame->nb_rpl_elems)
296 return AVERROR_INVALIDDATA;
297
298
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1984830 for (i = ctb_addr_ts; i < ctb_count; i++)
299 1966394 frame->rpl_tab[i] = frame->rpl + s->slice_idx;
300
301 18436 frame->refPicList = (RefPicList *)frame->rpl_tab[ctb_addr_ts];
302
303 18436 return 0;
304 }
305
306 18436 int ff_hevc_slice_rpl(HEVCContext *s)
307 {
308 18436 SliceHeader *sh = &s->sh;
309
310
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18436 uint8_t nb_list = sh->slice_type == HEVC_SLICE_B ? 2 : 1;
311 uint8_t list_idx;
312 int i, j, ret;
313
314 18436 ret = init_slice_rpl(s);
315
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18436 if (ret < 0)
316 return ret;
317
318 18436 if (!(s->rps[ST_CURR_BEF].nb_refs + s->rps[ST_CURR_AFT].nb_refs +
319
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18436 s->rps[LT_CURR].nb_refs) && !s->ps.pps->pps_curr_pic_ref_enabled_flag) {
320 av_log(s->avctx, AV_LOG_ERROR, "Zero refs in the frame RPS.\n");
321 return AVERROR_INVALIDDATA;
322 }
323
324
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51558 for (list_idx = 0; list_idx < nb_list; list_idx++) {
325 33122 RefPicList rpl_tmp = { { 0 } };
326 33122 RefPicList *rpl = &s->ref->refPicList[list_idx];
327
328 /* The order of the elements is
329 * ST_CURR_BEF - ST_CURR_AFT - LT_CURR for the L0 and
330 * ST_CURR_AFT - ST_CURR_BEF - LT_CURR for the L1 */
331 33122 int cand_lists[3] = { list_idx ? ST_CURR_AFT : ST_CURR_BEF,
332 33122 list_idx ? ST_CURR_BEF : ST_CURR_AFT,
333 LT_CURR };
334
335 /* concatenate the candidate lists for the current frame */
336
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66262 while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) {
337
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132560 for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) {
338 99420 RefPicList *rps = &s->rps[cand_lists[i]];
339
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219214 for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < HEVC_MAX_REFS; j++) {
340 119794 rpl_tmp.list[rpl_tmp.nb_refs] = rps->list[j];
341 119794 rpl_tmp.ref[rpl_tmp.nb_refs] = rps->ref[j];
342 119794 rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = i == 2;
343 119794 rpl_tmp.nb_refs++;
344 }
345 }
346 // Construct RefPicList0, RefPicList1 (8-8, 8-10)
347
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33140 if (s->ps.pps->pps_curr_pic_ref_enabled_flag && rpl_tmp.nb_refs < HEVC_MAX_REFS) {
348 rpl_tmp.list[rpl_tmp.nb_refs] = s->ref->poc;
349 rpl_tmp.ref[rpl_tmp.nb_refs] = s->ref;
350 rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = 1;
351 rpl_tmp.nb_refs++;
352 }
353 }
354
355 /* reorder the references if necessary */
356
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33122 if (sh->rpl_modification_flag[list_idx]) {
357
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6160 for (i = 0; i < sh->nb_refs[list_idx]; i++) {
358 4333 int idx = sh->list_entry_lx[list_idx][i];
359
360
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4333 if (idx >= rpl_tmp.nb_refs) {
361 av_log(s->avctx, AV_LOG_ERROR, "Invalid reference index.\n");
362 return AVERROR_INVALIDDATA;
363 }
364
365 4333 rpl->list[i] = rpl_tmp.list[idx];
366 4333 rpl->ref[i] = rpl_tmp.ref[idx];
367 4333 rpl->isLongTerm[i] = rpl_tmp.isLongTerm[idx];
368 4333 rpl->nb_refs++;
369 }
370 } else {
371 31295 memcpy(rpl, &rpl_tmp, sizeof(*rpl));
372 31295 rpl->nb_refs = FFMIN(rpl->nb_refs, sh->nb_refs[list_idx]);
373 }
374
375 // 8-9
376
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33122 if (s->ps.pps->pps_curr_pic_ref_enabled_flag &&
377 !sh->rpl_modification_flag[list_idx] &&
378 rpl_tmp.nb_refs > sh->nb_refs[L0]) {
379 rpl->list[sh->nb_refs[L0] - 1] = s->ref->poc;
380 rpl->ref[sh->nb_refs[L0] - 1] = s->ref;
381 }
382
383
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33122 if (sh->collocated_list == list_idx &&
384
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18436 sh->collocated_ref_idx < rpl->nb_refs)
385 18436 s->collocated_ref = rpl->ref[sh->collocated_ref_idx];
386 }
387
388 18436 return 0;
389 }
390
391 35135 static HEVCFrame *find_ref_idx(HEVCContext *s, int poc, uint8_t use_msb)
392 {
393
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35135 int mask = use_msb ? ~0 : (1 << s->ps.sps->log2_max_poc_lsb) - 1;
394 int i;
395
396
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152581 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
397 152517 HEVCFrame *ref = &s->DPB[i];
398
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152517 if (ref->frame->buf[0] && ref->sequence == s->seq_decode) {
399
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144567 if ((ref->poc & mask) == poc && (use_msb || ref->poc != s->poc))
400 35071 return ref;
401 }
402 }
403
404
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64 if (s->nal_unit_type != HEVC_NAL_CRA_NUT && !IS_BLA(s))
405 20 av_log(s->avctx, AV_LOG_ERROR,
406 "Could not find ref with POC %d\n", poc);
407 64 return NULL;
408 }
409
410 318909 static void mark_ref(HEVCFrame *frame, int flag)
411 {
412 318909 frame->flags &= ~(HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF);
413 318909 frame->flags |= flag;
414 318909 }
415
416 64 static HEVCFrame *generate_missing_ref(HEVCContext *s, int poc)
417 {
418 HEVCFrame *frame;
419 int i, y;
420
421 64 frame = alloc_frame(s);
422
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64 if (!frame)
423 return NULL;
424
425
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64 if (!s->avctx->hwaccel) {
426
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64 if (!s->ps.sps->pixel_shift) {
427
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176 for (i = 0; frame->frame->data[i]; i++)
428 132 memset(frame->frame->data[i], 1 << (s->ps.sps->bit_depth - 1),
429 132 frame->frame->linesize[i] * AV_CEIL_RSHIFT(s->ps.sps->height, s->ps.sps->vshift[i]));
430 } else {
431
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80 for (i = 0; frame->frame->data[i]; i++)
432
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71484 for (y = 0; y < (s->ps.sps->height >> s->ps.sps->vshift[i]); y++) {
433 71424 uint8_t *dst = frame->frame->data[i] + y * frame->frame->linesize[i];
434 71424 AV_WN16(dst, 1 << (s->ps.sps->bit_depth - 1));
435 71424 av_memcpy_backptr(dst + 2, 2, 2*(s->ps.sps->width >> s->ps.sps->hshift[i]) - 2);
436 }
437 }
438 }
439
440 64 frame->poc = poc;
441 64 frame->sequence = HEVC_SEQUENCE_COUNTER_INVALID;
442 64 frame->flags = 0;
443
444
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64 if (s->threads_type == FF_THREAD_FRAME)
445 ff_thread_report_progress(&frame->tf, INT_MAX, 0);
446
447 64 return frame;
448 }
449
450 /* add a reference with the given poc to the list and mark it as used in DPB */
451 35135 static int add_candidate_ref(HEVCContext *s, RefPicList *list,
452 int poc, int ref_flag, uint8_t use_msb)
453 {
454 35135 HEVCFrame *ref = find_ref_idx(s, poc, use_msb);
455
456
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35135 if (ref == s->ref || list->nb_refs >= HEVC_MAX_REFS)
457 return AVERROR_INVALIDDATA;
458
459
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35135 if (!ref) {
460 64 ref = generate_missing_ref(s, poc);
461
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64 if (!ref)
462 return AVERROR(ENOMEM);
463 }
464
465 35135 list->list[list->nb_refs] = ref->poc;
466 35135 list->ref[list->nb_refs] = ref;
467 35135 list->nb_refs++;
468
469 35135 mark_ref(ref, ref_flag);
470 35135 return 0;
471 }
472
473 9535 int ff_hevc_frame_rps(HEVCContext *s)
474 {
475 9535 const ShortTermRPS *short_rps = s->sh.short_term_rps;
476 9535 const LongTermRPS *long_rps = &s->sh.long_term_rps;
477 9535 RefPicList *rps = s->rps;
478 9535 int i, ret = 0;
479
480
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9535 if (!short_rps) {
481 381 rps[0].nb_refs = rps[1].nb_refs = 0;
482 381 return 0;
483 }
484
485 9154 unref_missing_refs(s);
486
487 /* clear the reference flags on all frames except the current one */
488
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302082 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
489 292928 HEVCFrame *frame = &s->DPB[i];
490
491
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292928 if (frame == s->ref)
492 9154 continue;
493
494 283774 mark_ref(frame, 0);
495 }
496
497
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54924 for (i = 0; i < NB_RPS_TYPE; i++)
498 45770 rps[i].nb_refs = 0;
499
500 /* add the short refs */
501
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42728 for (i = 0; i < short_rps->num_delta_pocs; i++) {
502 33574 int poc = s->poc + short_rps->delta_poc[i];
503 int list;
504
505
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33574 if (!short_rps->used[i])
506 1725 list = ST_FOLL;
507
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31849 else if (i < short_rps->num_negative_pics)
508 23222 list = ST_CURR_BEF;
509 else
510 8627 list = ST_CURR_AFT;
511
512 33574 ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_SHORT_REF, 1);
513
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33574 if (ret < 0)
514 goto fail;
515 }
516
517 /* add the long refs */
518
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10715 for (i = 0; i < long_rps->nb_refs; i++) {
519 1561 int poc = long_rps->poc[i];
520
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1561 int list = long_rps->used[i] ? LT_CURR : LT_FOLL;
521
522 1561 ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_LONG_REF, long_rps->poc_msb_present[i]);
523
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1561 if (ret < 0)
524 goto fail;
525 }
526
527 9154 fail:
528 /* release any frames that are now unused */
529
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302082 for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
530 292928 ff_hevc_unref_frame(&s->DPB[i], 0);
531
532 9154 return ret;
533 }
534
535 18524 int ff_hevc_frame_nb_refs(const HEVCContext *s)
536 {
537 18524 int ret = 0;
538 int i;
539 18524 const ShortTermRPS *rps = s->sh.short_term_rps;
540 18524 const LongTermRPS *long_rps = &s->sh.long_term_rps;
541
542
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18524 if (rps) {
543
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63959 for (i = 0; i < rps->num_negative_pics; i++)
544 45435 ret += !!rps->used[i];
545
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38952 for (; i < rps->num_delta_pocs; i++)
546 20428 ret += !!rps->used[i];
547 }
548
549
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18524 if (long_rps) {
550
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19944 for (i = 0; i < long_rps->nb_refs; i++)
551 1420 ret += !!long_rps->used[i];
552 }
553
554
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18524 if (s->ps.pps->pps_curr_pic_ref_enabled_flag)
555 ret++;
556
557 18524 return ret;
558 }
559