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2ba45a60 DM |
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/pixdesc.h" | |
25 | ||
26 | #include "internal.h" | |
27 | #include "thread.h" | |
28 | #include "hevc.h" | |
29 | ||
30 | void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags) | |
31 | { | |
32 | /* frame->frame can be NULL if context init failed */ | |
33 | if (!frame->frame || !frame->frame->buf[0]) | |
34 | return; | |
35 | ||
36 | frame->flags &= ~flags; | |
37 | if (!frame->flags) { | |
38 | ff_thread_release_buffer(s->avctx, &frame->tf); | |
39 | ||
40 | av_buffer_unref(&frame->tab_mvf_buf); | |
41 | frame->tab_mvf = NULL; | |
42 | ||
43 | av_buffer_unref(&frame->rpl_buf); | |
44 | av_buffer_unref(&frame->rpl_tab_buf); | |
45 | frame->rpl_tab = NULL; | |
46 | frame->refPicList = NULL; | |
47 | ||
48 | frame->collocated_ref = NULL; | |
49 | } | |
50 | } | |
51 | ||
52 | RefPicList *ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *ref, int x0, int y0) | |
53 | { | |
54 | int x_cb = x0 >> s->sps->log2_ctb_size; | |
55 | int y_cb = y0 >> s->sps->log2_ctb_size; | |
56 | int pic_width_cb = s->sps->ctb_width; | |
57 | int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[y_cb * pic_width_cb + x_cb]; | |
58 | return (RefPicList *)ref->rpl_tab[ctb_addr_ts]; | |
59 | } | |
60 | ||
61 | void ff_hevc_clear_refs(HEVCContext *s) | |
62 | { | |
63 | int i; | |
64 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) | |
65 | ff_hevc_unref_frame(s, &s->DPB[i], | |
66 | HEVC_FRAME_FLAG_SHORT_REF | | |
67 | HEVC_FRAME_FLAG_LONG_REF); | |
68 | } | |
69 | ||
70 | void ff_hevc_flush_dpb(HEVCContext *s) | |
71 | { | |
72 | int i; | |
73 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) | |
74 | ff_hevc_unref_frame(s, &s->DPB[i], ~0); | |
75 | } | |
76 | ||
77 | static HEVCFrame *alloc_frame(HEVCContext *s) | |
78 | { | |
79 | int i, j, ret; | |
80 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
81 | HEVCFrame *frame = &s->DPB[i]; | |
82 | if (frame->frame->buf[0]) | |
83 | continue; | |
84 | ||
85 | ret = ff_thread_get_buffer(s->avctx, &frame->tf, | |
86 | AV_GET_BUFFER_FLAG_REF); | |
87 | if (ret < 0) | |
88 | return NULL; | |
89 | ||
90 | frame->rpl_buf = av_buffer_allocz(s->nb_nals * sizeof(RefPicListTab)); | |
91 | if (!frame->rpl_buf) | |
92 | goto fail; | |
93 | ||
94 | frame->tab_mvf_buf = av_buffer_pool_get(s->tab_mvf_pool); | |
95 | if (!frame->tab_mvf_buf) | |
96 | goto fail; | |
97 | frame->tab_mvf = (MvField *)frame->tab_mvf_buf->data; | |
98 | ||
99 | frame->rpl_tab_buf = av_buffer_pool_get(s->rpl_tab_pool); | |
100 | if (!frame->rpl_tab_buf) | |
101 | goto fail; | |
102 | frame->rpl_tab = (RefPicListTab **)frame->rpl_tab_buf->data; | |
103 | frame->ctb_count = s->sps->ctb_width * s->sps->ctb_height; | |
104 | for (j = 0; j < frame->ctb_count; j++) | |
105 | frame->rpl_tab[j] = (RefPicListTab *)frame->rpl_buf->data; | |
106 | ||
107 | frame->frame->top_field_first = s->picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD; | |
108 | frame->frame->interlaced_frame = (s->picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD) || (s->picture_struct == AV_PICTURE_STRUCTURE_BOTTOM_FIELD); | |
109 | return frame; | |
110 | fail: | |
111 | ff_hevc_unref_frame(s, frame, ~0); | |
112 | return NULL; | |
113 | } | |
114 | av_log(s->avctx, AV_LOG_ERROR, "Error allocating frame, DPB full.\n"); | |
115 | return NULL; | |
116 | } | |
117 | ||
118 | int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc) | |
119 | { | |
120 | HEVCFrame *ref; | |
121 | int i; | |
122 | ||
123 | /* check that this POC doesn't already exist */ | |
124 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
125 | HEVCFrame *frame = &s->DPB[i]; | |
126 | ||
127 | if (frame->frame->buf[0] && frame->sequence == s->seq_decode && | |
128 | frame->poc == poc) { | |
129 | av_log(s->avctx, AV_LOG_ERROR, "Duplicate POC in a sequence: %d.\n", | |
130 | poc); | |
131 | return AVERROR_INVALIDDATA; | |
132 | } | |
133 | } | |
134 | ||
135 | ref = alloc_frame(s); | |
136 | if (!ref) | |
137 | return AVERROR(ENOMEM); | |
138 | ||
139 | *frame = ref->frame; | |
140 | s->ref = ref; | |
141 | ||
142 | if (s->sh.pic_output_flag) | |
143 | ref->flags = HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_SHORT_REF; | |
144 | else | |
145 | ref->flags = HEVC_FRAME_FLAG_SHORT_REF; | |
146 | ||
147 | ref->poc = poc; | |
148 | ref->sequence = s->seq_decode; | |
149 | ref->window = s->sps->output_window; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | int ff_hevc_output_frame(HEVCContext *s, AVFrame *out, int flush) | |
155 | { | |
156 | do { | |
157 | int nb_output = 0; | |
158 | int min_poc = INT_MAX; | |
159 | int i, min_idx, ret; | |
160 | ||
161 | if (s->sh.no_output_of_prior_pics_flag == 1) { | |
162 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
163 | HEVCFrame *frame = &s->DPB[i]; | |
164 | if (!(frame->flags & HEVC_FRAME_FLAG_BUMPING) && frame->poc != s->poc && | |
165 | frame->sequence == s->seq_output) { | |
166 | ff_hevc_unref_frame(s, frame, HEVC_FRAME_FLAG_OUTPUT); | |
167 | } | |
168 | } | |
169 | } | |
170 | ||
171 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
172 | HEVCFrame *frame = &s->DPB[i]; | |
173 | if ((frame->flags & HEVC_FRAME_FLAG_OUTPUT) && | |
174 | frame->sequence == s->seq_output) { | |
175 | nb_output++; | |
176 | if (frame->poc < min_poc) { | |
177 | min_poc = frame->poc; | |
178 | min_idx = i; | |
179 | } | |
180 | } | |
181 | } | |
182 | ||
183 | /* wait for more frames before output */ | |
184 | if (!flush && s->seq_output == s->seq_decode && s->sps && | |
185 | nb_output <= s->sps->temporal_layer[s->sps->max_sub_layers - 1].num_reorder_pics) | |
186 | return 0; | |
187 | ||
188 | if (nb_output) { | |
189 | HEVCFrame *frame = &s->DPB[min_idx]; | |
190 | AVFrame *dst = out; | |
191 | AVFrame *src = frame->frame; | |
192 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(src->format); | |
193 | int pixel_shift = !!(desc->comp[0].depth_minus1 > 7); | |
194 | ||
195 | ret = av_frame_ref(out, src); | |
196 | if (frame->flags & HEVC_FRAME_FLAG_BUMPING) | |
197 | ff_hevc_unref_frame(s, frame, HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_BUMPING); | |
198 | else | |
199 | ff_hevc_unref_frame(s, frame, HEVC_FRAME_FLAG_OUTPUT); | |
200 | if (ret < 0) | |
201 | return ret; | |
202 | ||
203 | for (i = 0; i < 3; i++) { | |
204 | int hshift = (i > 0) ? desc->log2_chroma_w : 0; | |
205 | int vshift = (i > 0) ? desc->log2_chroma_h : 0; | |
206 | int off = ((frame->window.left_offset >> hshift) << pixel_shift) + | |
207 | (frame->window.top_offset >> vshift) * dst->linesize[i]; | |
208 | dst->data[i] += off; | |
209 | } | |
210 | av_log(s->avctx, AV_LOG_DEBUG, | |
211 | "Output frame with POC %d.\n", frame->poc); | |
212 | return 1; | |
213 | } | |
214 | ||
215 | if (s->seq_output != s->seq_decode) | |
216 | s->seq_output = (s->seq_output + 1) & 0xff; | |
217 | else | |
218 | break; | |
219 | } while (1); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | void ff_hevc_bump_frame(HEVCContext *s) | |
225 | { | |
226 | int dpb = 0; | |
227 | int min_poc = INT_MAX; | |
228 | int i; | |
229 | ||
230 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
231 | HEVCFrame *frame = &s->DPB[i]; | |
232 | if ((frame->flags) && | |
233 | frame->sequence == s->seq_output && | |
234 | frame->poc != s->poc) { | |
235 | dpb++; | |
236 | } | |
237 | } | |
238 | ||
239 | if (s->sps && dpb >= s->sps->temporal_layer[s->sps->max_sub_layers - 1].max_dec_pic_buffering) { | |
240 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
241 | HEVCFrame *frame = &s->DPB[i]; | |
242 | if ((frame->flags) && | |
243 | frame->sequence == s->seq_output && | |
244 | frame->poc != s->poc) { | |
245 | if (frame->flags == HEVC_FRAME_FLAG_OUTPUT && frame->poc < min_poc) { | |
246 | min_poc = frame->poc; | |
247 | } | |
248 | } | |
249 | } | |
250 | ||
251 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
252 | HEVCFrame *frame = &s->DPB[i]; | |
253 | if (frame->flags & HEVC_FRAME_FLAG_OUTPUT && | |
254 | frame->sequence == s->seq_output && | |
255 | frame->poc <= min_poc) { | |
256 | frame->flags |= HEVC_FRAME_FLAG_BUMPING; | |
257 | } | |
258 | } | |
259 | ||
260 | dpb--; | |
261 | } | |
262 | } | |
263 | ||
264 | static int init_slice_rpl(HEVCContext *s) | |
265 | { | |
266 | HEVCFrame *frame = s->ref; | |
267 | int ctb_count = frame->ctb_count; | |
268 | int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[s->sh.slice_segment_addr]; | |
269 | int i; | |
270 | ||
271 | if (s->slice_idx >= frame->rpl_buf->size / sizeof(RefPicListTab)) | |
272 | return AVERROR_INVALIDDATA; | |
273 | ||
274 | for (i = ctb_addr_ts; i < ctb_count; i++) | |
275 | frame->rpl_tab[i] = (RefPicListTab *)frame->rpl_buf->data + s->slice_idx; | |
276 | ||
277 | frame->refPicList = (RefPicList *)frame->rpl_tab[ctb_addr_ts]; | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | int ff_hevc_slice_rpl(HEVCContext *s) | |
283 | { | |
284 | SliceHeader *sh = &s->sh; | |
285 | ||
286 | uint8_t nb_list = sh->slice_type == B_SLICE ? 2 : 1; | |
287 | uint8_t list_idx; | |
288 | int i, j, ret; | |
289 | ||
290 | ret = init_slice_rpl(s); | |
291 | if (ret < 0) | |
292 | return ret; | |
293 | ||
294 | if (!(s->rps[ST_CURR_BEF].nb_refs + s->rps[ST_CURR_AFT].nb_refs + | |
295 | s->rps[LT_CURR].nb_refs)) { | |
296 | av_log(s->avctx, AV_LOG_ERROR, "Zero refs in the frame RPS.\n"); | |
297 | return AVERROR_INVALIDDATA; | |
298 | } | |
299 | ||
300 | for (list_idx = 0; list_idx < nb_list; list_idx++) { | |
301 | RefPicList rpl_tmp = { { 0 } }; | |
302 | RefPicList *rpl = &s->ref->refPicList[list_idx]; | |
303 | ||
304 | /* The order of the elements is | |
305 | * ST_CURR_BEF - ST_CURR_AFT - LT_CURR for the L0 and | |
306 | * ST_CURR_AFT - ST_CURR_BEF - LT_CURR for the L1 */ | |
307 | int cand_lists[3] = { list_idx ? ST_CURR_AFT : ST_CURR_BEF, | |
308 | list_idx ? ST_CURR_BEF : ST_CURR_AFT, | |
309 | LT_CURR }; | |
310 | ||
311 | /* concatenate the candidate lists for the current frame */ | |
312 | while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) { | |
313 | for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) { | |
314 | RefPicList *rps = &s->rps[cand_lists[i]]; | |
315 | for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < MAX_REFS; j++) { | |
316 | rpl_tmp.list[rpl_tmp.nb_refs] = rps->list[j]; | |
317 | rpl_tmp.ref[rpl_tmp.nb_refs] = rps->ref[j]; | |
318 | rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = i == 2; | |
319 | rpl_tmp.nb_refs++; | |
320 | } | |
321 | } | |
322 | } | |
323 | ||
324 | /* reorder the references if necessary */ | |
325 | if (sh->rpl_modification_flag[list_idx]) { | |
326 | for (i = 0; i < sh->nb_refs[list_idx]; i++) { | |
327 | int idx = sh->list_entry_lx[list_idx][i]; | |
328 | ||
329 | if (idx >= rpl_tmp.nb_refs) { | |
330 | av_log(s->avctx, AV_LOG_ERROR, "Invalid reference index.\n"); | |
331 | return AVERROR_INVALIDDATA; | |
332 | } | |
333 | ||
334 | rpl->list[i] = rpl_tmp.list[idx]; | |
335 | rpl->ref[i] = rpl_tmp.ref[idx]; | |
336 | rpl->isLongTerm[i] = rpl_tmp.isLongTerm[idx]; | |
337 | rpl->nb_refs++; | |
338 | } | |
339 | } else { | |
340 | memcpy(rpl, &rpl_tmp, sizeof(*rpl)); | |
341 | rpl->nb_refs = FFMIN(rpl->nb_refs, sh->nb_refs[list_idx]); | |
342 | } | |
343 | ||
344 | if (sh->collocated_list == list_idx && | |
345 | sh->collocated_ref_idx < rpl->nb_refs) | |
346 | s->ref->collocated_ref = rpl->ref[sh->collocated_ref_idx]; | |
347 | } | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | static HEVCFrame *find_ref_idx(HEVCContext *s, int poc) | |
353 | { | |
354 | int i; | |
355 | int LtMask = (1 << s->sps->log2_max_poc_lsb) - 1; | |
356 | ||
357 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
358 | HEVCFrame *ref = &s->DPB[i]; | |
359 | if (ref->frame->buf[0] && (ref->sequence == s->seq_decode)) { | |
360 | if ((ref->poc & LtMask) == poc) | |
361 | return ref; | |
362 | } | |
363 | } | |
364 | ||
365 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
366 | HEVCFrame *ref = &s->DPB[i]; | |
367 | if (ref->frame->buf[0] && ref->sequence == s->seq_decode) { | |
368 | if (ref->poc == poc || (ref->poc & LtMask) == poc) | |
369 | return ref; | |
370 | } | |
371 | } | |
372 | ||
373 | av_log(s->avctx, AV_LOG_ERROR, | |
374 | "Could not find ref with POC %d\n", poc); | |
375 | return NULL; | |
376 | } | |
377 | ||
378 | static void mark_ref(HEVCFrame *frame, int flag) | |
379 | { | |
380 | frame->flags &= ~(HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF); | |
381 | frame->flags |= flag; | |
382 | } | |
383 | ||
384 | static HEVCFrame *generate_missing_ref(HEVCContext *s, int poc) | |
385 | { | |
386 | HEVCFrame *frame; | |
387 | int i, x, y; | |
388 | ||
389 | frame = alloc_frame(s); | |
390 | if (!frame) | |
391 | return NULL; | |
392 | ||
393 | if (!s->sps->pixel_shift) { | |
394 | for (i = 0; frame->frame->buf[i]; i++) | |
395 | memset(frame->frame->buf[i]->data, 1 << (s->sps->bit_depth - 1), | |
396 | frame->frame->buf[i]->size); | |
397 | } else { | |
398 | for (i = 0; frame->frame->data[i]; i++) | |
399 | for (y = 0; y < (s->sps->height >> s->sps->vshift[i]); y++) | |
400 | for (x = 0; x < (s->sps->width >> s->sps->hshift[i]); x++) { | |
401 | AV_WN16(frame->frame->data[i] + y * frame->frame->linesize[i] + 2 * x, | |
402 | 1 << (s->sps->bit_depth - 1)); | |
403 | } | |
404 | } | |
405 | ||
406 | frame->poc = poc; | |
407 | frame->sequence = s->seq_decode; | |
408 | frame->flags = 0; | |
409 | ||
410 | if (s->threads_type == FF_THREAD_FRAME) | |
411 | ff_thread_report_progress(&frame->tf, INT_MAX, 0); | |
412 | ||
413 | return frame; | |
414 | } | |
415 | ||
416 | /* add a reference with the given poc to the list and mark it as used in DPB */ | |
417 | static int add_candidate_ref(HEVCContext *s, RefPicList *list, | |
418 | int poc, int ref_flag) | |
419 | { | |
420 | HEVCFrame *ref = find_ref_idx(s, poc); | |
421 | ||
422 | if (ref == s->ref) | |
423 | return AVERROR_INVALIDDATA; | |
424 | ||
425 | if (!ref) { | |
426 | ref = generate_missing_ref(s, poc); | |
427 | if (!ref) | |
428 | return AVERROR(ENOMEM); | |
429 | } | |
430 | ||
431 | list->list[list->nb_refs] = ref->poc; | |
432 | list->ref[list->nb_refs] = ref; | |
433 | list->nb_refs++; | |
434 | ||
435 | mark_ref(ref, ref_flag); | |
436 | return 0; | |
437 | } | |
438 | ||
439 | int ff_hevc_frame_rps(HEVCContext *s) | |
440 | { | |
441 | const ShortTermRPS *short_rps = s->sh.short_term_rps; | |
442 | const LongTermRPS *long_rps = &s->sh.long_term_rps; | |
443 | RefPicList *rps = s->rps; | |
444 | int i, ret; | |
445 | ||
446 | if (!short_rps) { | |
447 | rps[0].nb_refs = rps[1].nb_refs = 0; | |
448 | return 0; | |
449 | } | |
450 | ||
451 | /* clear the reference flags on all frames except the current one */ | |
452 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) { | |
453 | HEVCFrame *frame = &s->DPB[i]; | |
454 | ||
455 | if (frame == s->ref) | |
456 | continue; | |
457 | ||
458 | mark_ref(frame, 0); | |
459 | } | |
460 | ||
461 | for (i = 0; i < NB_RPS_TYPE; i++) | |
462 | rps[i].nb_refs = 0; | |
463 | ||
464 | /* add the short refs */ | |
465 | for (i = 0; i < short_rps->num_delta_pocs; i++) { | |
466 | int poc = s->poc + short_rps->delta_poc[i]; | |
467 | int list; | |
468 | ||
469 | if (!short_rps->used[i]) | |
470 | list = ST_FOLL; | |
471 | else if (i < short_rps->num_negative_pics) | |
472 | list = ST_CURR_BEF; | |
473 | else | |
474 | list = ST_CURR_AFT; | |
475 | ||
476 | ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_SHORT_REF); | |
477 | if (ret < 0) | |
478 | return ret; | |
479 | } | |
480 | ||
481 | /* add the long refs */ | |
482 | for (i = 0; i < long_rps->nb_refs; i++) { | |
483 | int poc = long_rps->poc[i]; | |
484 | int list = long_rps->used[i] ? LT_CURR : LT_FOLL; | |
485 | ||
486 | ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_LONG_REF); | |
487 | if (ret < 0) | |
488 | return ret; | |
489 | } | |
490 | ||
491 | /* release any frames that are now unused */ | |
492 | for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) | |
493 | ff_hevc_unref_frame(s, &s->DPB[i], 0); | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
498 | int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb) | |
499 | { | |
500 | int max_poc_lsb = 1 << s->sps->log2_max_poc_lsb; | |
501 | int prev_poc_lsb = s->pocTid0 % max_poc_lsb; | |
502 | int prev_poc_msb = s->pocTid0 - prev_poc_lsb; | |
503 | int poc_msb; | |
504 | ||
505 | if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2) | |
506 | poc_msb = prev_poc_msb + max_poc_lsb; | |
507 | else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2) | |
508 | poc_msb = prev_poc_msb - max_poc_lsb; | |
509 | else | |
510 | poc_msb = prev_poc_msb; | |
511 | ||
512 | // For BLA picture types, POCmsb is set to 0. | |
513 | if (s->nal_unit_type == NAL_BLA_W_LP || | |
514 | s->nal_unit_type == NAL_BLA_W_RADL || | |
515 | s->nal_unit_type == NAL_BLA_N_LP) | |
516 | poc_msb = 0; | |
517 | ||
518 | return poc_msb + poc_lsb; | |
519 | } | |
520 | ||
521 | int ff_hevc_frame_nb_refs(HEVCContext *s) | |
522 | { | |
523 | int ret = 0; | |
524 | int i; | |
525 | const ShortTermRPS *rps = s->sh.short_term_rps; | |
526 | LongTermRPS *long_rps = &s->sh.long_term_rps; | |
527 | ||
528 | if (rps) { | |
529 | for (i = 0; i < rps->num_negative_pics; i++) | |
530 | ret += !!rps->used[i]; | |
531 | for (; i < rps->num_delta_pocs; i++) | |
532 | ret += !!rps->used[i]; | |
533 | } | |
534 | ||
535 | if (long_rps) { | |
536 | for (i = 0; i < long_rps->nb_refs; i++) | |
537 | ret += !!long_rps->used[i]; | |
538 | } | |
539 | return ret; | |
540 | } |