1 /**************************************************************************
2 *
3 * Copyright 2016 Advanced Micro Devices, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "pipe/p_video_codec.h"
29 #include "util/u_memory.h"
30 #include "util/u_video.h"
31 #include "vl/vl_rbsp.h"
32
33 #include "entrypoint.h"
34 #include "vid_dec.h"
35
36 #define DPB_MAX_SIZE 32
37 #define MAX_NUM_REF_PICS 16
38
39 enum {
40 NAL_UNIT_TYPE_TRAIL_N = 0,
41 NAL_UNIT_TYPE_TRAIL_R = 1,
42 NAL_UNIT_TYPE_TSA_N = 2,
43 NAL_UNIT_TYPE_TSA_R = 3,
44 NAL_UNIT_TYPE_STSA_N = 4,
45 NAL_UNIT_TYPE_STSA_R = 5,
46 NAL_UNIT_TYPE_RADL_N = 6,
47 NAL_UNIT_TYPE_RADL_R = 7,
48 NAL_UNIT_TYPE_RASL_N = 8,
49 NAL_UNIT_TYPE_RASL_R = 9,
50 NAL_UNIT_TYPE_BLA_W_LP = 16,
51 NAL_UNIT_TYPE_BLA_W_RADL = 17,
52 NAL_UNIT_TYPE_BLA_N_LP = 18,
53 NAL_UNIT_TYPE_IDR_W_RADL = 19,
54 NAL_UNIT_TYPE_IDR_N_LP = 20,
55 NAL_UNIT_TYPE_CRA = 21,
56 NAL_UNIT_TYPE_SPS = 33,
57 NAL_UNIT_TYPE_PPS = 34,
58 };
59
60 static const uint8_t Default_8x8_Intra[64] = {
61 16, 16, 16, 16, 17, 18, 21, 24,
62 16, 16, 16, 16, 17, 19, 22, 25,
63 16, 16, 17, 18, 20, 22, 25, 29,
64 16, 16, 18, 21, 24, 27, 31, 36,
65 17, 17, 20, 24, 30, 35, 41, 47,
66 18, 19, 22, 27, 35, 44, 54, 65,
67 21, 22, 25, 31, 41, 54, 70, 88,
68 24, 25, 29, 36, 47, 65, 88, 115
69 };
70
71 static const uint8_t Default_8x8_Inter[64] = {
72 16, 16, 16, 16, 17, 18, 20, 24,
73 16, 16, 16, 17, 18, 20, 24, 25,
74 16, 16, 17, 18, 20, 24, 25, 28,
75 16, 17, 18, 20, 24, 25, 28, 33,
76 17, 18, 20, 24, 25, 28, 33, 41,
77 18, 20, 24, 25, 28, 33, 41, 54,
78 20, 24, 25, 28, 33, 41, 54, 71,
79 24, 25, 28, 33, 41, 54, 71, 91
80 };
81
82 struct dpb_list {
83 struct list_head list;
84 struct pipe_video_buffer *buffer;
85 OMX_TICKS timestamp;
86 unsigned poc;
87 };
88
89 struct ref_pic_set {
90 unsigned num_pics;
91 unsigned num_neg_pics;
92 unsigned num_pos_pics;
93 unsigned num_delta_poc;
94 int delta_poc[MAX_NUM_REF_PICS];
95 bool used[MAX_NUM_REF_PICS];
96 };
97
is_idr_picture(unsigned nal_unit_type)98 static bool is_idr_picture(unsigned nal_unit_type)
99 {
100 return (nal_unit_type == NAL_UNIT_TYPE_IDR_W_RADL ||
101 nal_unit_type == NAL_UNIT_TYPE_IDR_N_LP);
102 }
103
104 /* broken link access picture */
is_bla_picture(unsigned nal_unit_type)105 static bool is_bla_picture(unsigned nal_unit_type)
106 {
107 return (nal_unit_type == NAL_UNIT_TYPE_BLA_W_LP ||
108 nal_unit_type == NAL_UNIT_TYPE_BLA_W_RADL ||
109 nal_unit_type == NAL_UNIT_TYPE_BLA_N_LP);
110 }
111
112 /* random access point picture */
is_rap_picture(unsigned nal_unit_type)113 static bool is_rap_picture(unsigned nal_unit_type)
114 {
115 return (nal_unit_type >= NAL_UNIT_TYPE_BLA_W_LP &&
116 nal_unit_type <= NAL_UNIT_TYPE_CRA);
117 }
118
is_slice_picture(unsigned nal_unit_type)119 static bool is_slice_picture(unsigned nal_unit_type)
120 {
121 return (nal_unit_type <= NAL_UNIT_TYPE_RASL_R ||
122 is_rap_picture(nal_unit_type));
123 }
124
set_poc(vid_dec_PrivateType * priv,unsigned nal_unit_type,int i)125 static void set_poc(vid_dec_PrivateType *priv,
126 unsigned nal_unit_type, int i)
127 {
128 priv->picture.h265.CurrPicOrderCntVal = i;
129
130 if (priv->codec_data.h265.temporal_id == 0 &&
131 (nal_unit_type == NAL_UNIT_TYPE_TRAIL_R ||
132 nal_unit_type == NAL_UNIT_TYPE_TSA_R ||
133 nal_unit_type == NAL_UNIT_TYPE_STSA_R ||
134 is_rap_picture(nal_unit_type)))
135 priv->codec_data.h265.slice_prev_poc = i;
136 }
137
get_poc(vid_dec_PrivateType * priv)138 static unsigned get_poc(vid_dec_PrivateType *priv)
139 {
140 return priv->picture.h265.CurrPicOrderCntVal;
141 }
142
profile_tier(struct vl_rbsp * rbsp)143 static void profile_tier(struct vl_rbsp *rbsp)
144 {
145 int i;
146
147 /* general_profile_space */
148 vl_rbsp_u(rbsp, 2);
149
150 /* general_tier_flag */
151 vl_rbsp_u(rbsp, 1);
152
153 /* general_profile_idc */
154 vl_rbsp_u(rbsp, 5);
155
156 /* general_profile_compatibility_flag */
157 for(i = 0; i < 32; ++i)
158 vl_rbsp_u(rbsp, 1);
159
160 /* general_progressive_source_flag */
161 vl_rbsp_u(rbsp, 1);
162
163 /* general_interlaced_source_flag */
164 vl_rbsp_u(rbsp, 1);
165
166 /* general_non_packed_constraint_flag */
167 vl_rbsp_u(rbsp, 1);
168
169 /* general_frame_only_constraint_flag */
170 vl_rbsp_u(rbsp, 1);
171
172 /* general_reserved_zero_44bits */
173 vl_rbsp_u(rbsp, 16);
174 vl_rbsp_u(rbsp, 16);
175 vl_rbsp_u(rbsp, 12);
176 }
177
profile_tier_level(struct vl_rbsp * rbsp,int max_sublayers_minus1)178 static unsigned profile_tier_level(struct vl_rbsp *rbsp,
179 int max_sublayers_minus1)
180 {
181 bool sub_layer_profile_present_flag[6];
182 bool sub_layer_level_present_flag[6];
183 unsigned level_idc;
184 int i;
185
186 profile_tier(rbsp);
187
188 /* general_level_idc */
189 level_idc = vl_rbsp_u(rbsp, 8);
190
191 for (i = 0; i < max_sublayers_minus1; ++i) {
192 sub_layer_profile_present_flag[i] = vl_rbsp_u(rbsp, 1);
193 sub_layer_level_present_flag[i] = vl_rbsp_u(rbsp, 1);
194 }
195
196 if (max_sublayers_minus1 > 0)
197 for (i = max_sublayers_minus1; i < 8; ++i)
198 /* reserved_zero_2bits */
199 vl_rbsp_u(rbsp, 2);
200
201 for (i = 0; i < max_sublayers_minus1; ++i) {
202 if (sub_layer_profile_present_flag[i])
203 profile_tier(rbsp);
204
205 if (sub_layer_level_present_flag[i])
206 /* sub_layer_level_idc */
207 vl_rbsp_u(rbsp, 8);
208 }
209
210 return level_idc;
211 }
212
scaling_list_data(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp,struct pipe_h265_sps * sps)213 static void scaling_list_data(vid_dec_PrivateType *priv,
214 struct vl_rbsp *rbsp, struct pipe_h265_sps *sps)
215 {
216 unsigned size_id, matrix_id;
217 unsigned scaling_list_len[4] = { 16, 64, 64, 64 };
218 uint8_t scaling_list4x4[6][64] = { };
219 int i;
220
221 uint8_t (*scaling_list_data[4])[6][64] = {
222 (uint8_t (*)[6][64])scaling_list4x4,
223 (uint8_t (*)[6][64])sps->ScalingList8x8,
224 (uint8_t (*)[6][64])sps->ScalingList16x16,
225 (uint8_t (*)[6][64])sps->ScalingList32x32
226 };
227 uint8_t (*scaling_list_dc_coeff[2])[6] = {
228 (uint8_t (*)[6])sps->ScalingListDCCoeff16x16,
229 (uint8_t (*)[6])sps->ScalingListDCCoeff32x32
230 };
231
232 for (size_id = 0; size_id < 4; ++size_id) {
233
234 for (matrix_id = 0; matrix_id < ((size_id == 3) ? 2 : 6); ++matrix_id) {
235 bool scaling_list_pred_mode_flag = vl_rbsp_u(rbsp, 1);
236
237 if (!scaling_list_pred_mode_flag) {
238 /* scaling_list_pred_matrix_id_delta */;
239 unsigned matrix_id_with_delta = matrix_id - vl_rbsp_ue(rbsp);
240
241 if (matrix_id != matrix_id_with_delta) {
242 memcpy((*scaling_list_data[size_id])[matrix_id],
243 (*scaling_list_data[size_id])[matrix_id_with_delta],
244 scaling_list_len[size_id]);
245 if (size_id > 1)
246 (*scaling_list_dc_coeff[size_id - 2])[matrix_id] =
247 (*scaling_list_dc_coeff[size_id - 2])[matrix_id_with_delta];
248 } else {
249 const uint8_t *d;
250
251 if (size_id == 0)
252 memset((*scaling_list_data[0])[matrix_id], 16, 16);
253 else {
254 if (size_id < 3)
255 d = (matrix_id < 3) ? Default_8x8_Intra : Default_8x8_Inter;
256 else
257 d = (matrix_id < 1) ? Default_8x8_Intra : Default_8x8_Inter;
258 memcpy((*scaling_list_data[size_id])[matrix_id], d,
259 scaling_list_len[size_id]);
260 }
261 if (size_id > 1)
262 (*scaling_list_dc_coeff[size_id - 2])[matrix_id] = 16;
263 }
264 } else {
265 int next_coef = 8;
266 int coef_num = MIN2(64, (1 << (4 + (size_id << 1))));
267
268 if (size_id > 1) {
269 /* scaling_list_dc_coef_minus8 */
270 next_coef = vl_rbsp_se(rbsp) + 8;
271 (*scaling_list_dc_coeff[size_id - 2])[matrix_id] = next_coef;
272 }
273
274 for (i = 0; i < coef_num; ++i) {
275 /* scaling_list_delta_coef */
276 next_coef = (next_coef + vl_rbsp_se(rbsp) + 256) % 256;
277 (*scaling_list_data[size_id])[matrix_id][i] = next_coef;
278 }
279 }
280 }
281 }
282
283 for (i = 0; i < 6; ++i)
284 memcpy(sps->ScalingList4x4[i], scaling_list4x4[i], 16);
285
286 return;
287 }
288
st_ref_pic_set(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp,struct ref_pic_set * rps,struct pipe_h265_sps * sps,unsigned idx)289 static void st_ref_pic_set(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp,
290 struct ref_pic_set *rps, struct pipe_h265_sps *sps,
291 unsigned idx)
292 {
293 bool inter_rps_pred_flag;
294 unsigned delta_idx_minus1;
295 int delta_poc;
296 int i;
297
298 inter_rps_pred_flag = (idx != 0) ? (vl_rbsp_u(rbsp, 1)) : false;
299
300 if (inter_rps_pred_flag) {
301 struct ref_pic_set *ref_rps;
302 unsigned sign, abs;
303 int delta_rps;
304 bool used;
305 int j;
306
307 if (idx == sps->num_short_term_ref_pic_sets)
308 delta_idx_minus1 = vl_rbsp_ue(rbsp);
309 else
310 delta_idx_minus1 = 0;
311
312 ref_rps = (struct ref_pic_set *)
313 priv->codec_data.h265.ref_pic_set_list + idx - (delta_idx_minus1 + 1);
314
315 /* delta_rps_sign */
316 sign = vl_rbsp_u(rbsp, 1);
317 /* abs_delta_rps_minus1 */
318 abs = vl_rbsp_ue(rbsp);
319 delta_rps = (1 - 2 * sign) * (abs + 1);
320
321 rps->num_neg_pics = 0;
322 rps->num_pos_pics = 0;
323 rps->num_pics = 0;
324
325 for(i = 0 ; i <= ref_rps->num_pics; ++i) {
326 /* used_by_curr_pic_flag */
327 if (!vl_rbsp_u(rbsp, 1))
328 /* use_delta_flag */
329 vl_rbsp_u(rbsp, 1);
330 else {
331 delta_poc = delta_rps +
332 ((i < ref_rps->num_pics)? ref_rps->delta_poc[i] : 0);
333 rps->delta_poc[rps->num_pics] = delta_poc;
334 rps->used[rps->num_pics] = true;
335 if (delta_poc < 0)
336 rps->num_neg_pics++;
337 else
338 rps->num_pos_pics++;
339 rps->num_pics++;
340 }
341 }
342
343 rps->num_delta_poc = ref_rps->num_pics;
344
345 /* sort delta poc */
346 for (i = 1; i < rps->num_pics; ++i) {
347 delta_poc = rps->delta_poc[i];
348 used = rps->used[i];
349 for (j = i - 1; j >= 0; j--) {
350 if (delta_poc < rps->delta_poc[j]) {
351 rps->delta_poc[j + 1] = rps->delta_poc[j];
352 rps->used[j + 1] = rps->used[j];
353 rps->delta_poc[j] = delta_poc;
354 rps->used[j] = used;
355 }
356 }
357 }
358
359 for (i = 0 , j = rps->num_neg_pics - 1;
360 i < rps->num_neg_pics >> 1; i++, j--) {
361 delta_poc = rps->delta_poc[i];
362 used = rps->used[i];
363 rps->delta_poc[i] = rps->delta_poc[j];
364 rps->used[i] = rps->used[j];
365 rps->delta_poc[j] = delta_poc;
366 rps->used[j] = used;
367 }
368 } else {
369 /* num_negative_pics */
370 rps->num_neg_pics = vl_rbsp_ue(rbsp);
371 /* num_positive_pics */
372 rps->num_pos_pics = vl_rbsp_ue(rbsp);
373 rps->num_pics = rps->num_neg_pics + rps->num_pos_pics;
374
375 delta_poc = 0;
376 for(i = 0 ; i < rps->num_neg_pics; ++i) {
377 /* delta_poc_s0_minus1 */
378 delta_poc -= (vl_rbsp_ue(rbsp) + 1);
379 rps->delta_poc[i] = delta_poc;
380 /* used_by_curr_pic_s0_flag */
381 rps->used[i] = vl_rbsp_u(rbsp, 1);
382 }
383
384 delta_poc = 0;
385 for(i = rps->num_neg_pics; i < rps->num_pics; ++i) {
386 /* delta_poc_s1_minus1 */
387 delta_poc += (vl_rbsp_ue(rbsp) + 1);
388 rps->delta_poc[i] = delta_poc;
389 /* used_by_curr_pic_s1_flag */
390 rps->used[i] = vl_rbsp_u(rbsp, 1);
391 }
392 }
393 }
394
seq_parameter_set_id(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp)395 static struct pipe_h265_sps *seq_parameter_set_id(vid_dec_PrivateType *priv,
396 struct vl_rbsp *rbsp)
397 {
398 unsigned id = vl_rbsp_ue(rbsp);
399
400 if (id >= ARRAY_SIZE(priv->codec_data.h265.sps))
401 return NULL;
402
403 return &priv->codec_data.h265.sps[id];
404 }
405
seq_parameter_set(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp)406 static void seq_parameter_set(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp)
407 {
408 struct pipe_h265_sps *sps;
409 int sps_max_sub_layers_minus1;
410 unsigned i;
411
412 /* sps_video_parameter_set_id */
413 vl_rbsp_u(rbsp, 4);
414
415 /* sps_max_sub_layers_minus1 */
416 sps_max_sub_layers_minus1 = vl_rbsp_u(rbsp, 3);
417
418 assert(sps_max_sub_layers_minus1 <= 6);
419
420 /* sps_temporal_id_nesting_flag */
421 vl_rbsp_u(rbsp, 1);
422
423 priv->codec_data.h265.level_idc =
424 profile_tier_level(rbsp, sps_max_sub_layers_minus1);
425
426 sps = seq_parameter_set_id(priv, rbsp);
427 if (!sps)
428 return;
429
430 memset(sps, 0, sizeof(*sps));
431
432 sps->chroma_format_idc = vl_rbsp_ue(rbsp);
433
434 if (sps->chroma_format_idc == 3)
435 sps->separate_colour_plane_flag = vl_rbsp_u(rbsp, 1);
436
437 priv->codec_data.h265.pic_width_in_luma_samples =
438 sps->pic_width_in_luma_samples = vl_rbsp_ue(rbsp);
439
440 priv->codec_data.h265.pic_height_in_luma_samples =
441 sps->pic_height_in_luma_samples = vl_rbsp_ue(rbsp);
442
443 /* conformance_window_flag */
444 if (vl_rbsp_u(rbsp, 1)) {
445 /* conf_win_left_offset */
446 vl_rbsp_ue(rbsp);
447 /* conf_win_right_offset */
448 vl_rbsp_ue(rbsp);
449 /* conf_win_top_offset */
450 vl_rbsp_ue(rbsp);
451 /* conf_win_bottom_offset */
452 vl_rbsp_ue(rbsp);
453 }
454
455 sps->bit_depth_luma_minus8 = vl_rbsp_ue(rbsp);
456 sps->bit_depth_chroma_minus8 = vl_rbsp_ue(rbsp);
457 sps->log2_max_pic_order_cnt_lsb_minus4 = vl_rbsp_ue(rbsp);
458
459 /* sps_sub_layer_ordering_info_present_flag */
460 i = vl_rbsp_u(rbsp, 1) ? 0 : sps_max_sub_layers_minus1;
461 for (; i <= sps_max_sub_layers_minus1; ++i) {
462 sps->sps_max_dec_pic_buffering_minus1 = vl_rbsp_ue(rbsp);
463 /* sps_max_num_reorder_pics */
464 vl_rbsp_ue(rbsp);
465 /* sps_max_latency_increase_plus */
466 vl_rbsp_ue(rbsp);
467 }
468
469 sps->log2_min_luma_coding_block_size_minus3 = vl_rbsp_ue(rbsp);
470 sps->log2_diff_max_min_luma_coding_block_size = vl_rbsp_ue(rbsp);
471 sps->log2_min_transform_block_size_minus2 = vl_rbsp_ue(rbsp);
472 sps->log2_diff_max_min_transform_block_size = vl_rbsp_ue(rbsp);
473 sps->max_transform_hierarchy_depth_inter = vl_rbsp_ue(rbsp);
474 sps->max_transform_hierarchy_depth_intra = vl_rbsp_ue(rbsp);
475
476 sps->scaling_list_enabled_flag = vl_rbsp_u(rbsp, 1);
477 if (sps->scaling_list_enabled_flag)
478 /* sps_scaling_list_data_present_flag */
479 if (vl_rbsp_u(rbsp, 1))
480 scaling_list_data(priv, rbsp, sps);
481
482 sps->amp_enabled_flag = vl_rbsp_u(rbsp, 1);
483 sps->sample_adaptive_offset_enabled_flag = vl_rbsp_u(rbsp, 1);
484 sps->pcm_enabled_flag = vl_rbsp_u(rbsp, 1);
485 if (sps->pcm_enabled_flag) {
486 sps->pcm_sample_bit_depth_luma_minus1 = vl_rbsp_u(rbsp, 4);
487 sps->pcm_sample_bit_depth_chroma_minus1 = vl_rbsp_u(rbsp, 4);
488 sps->log2_min_pcm_luma_coding_block_size_minus3 = vl_rbsp_ue(rbsp);
489 sps->log2_diff_max_min_pcm_luma_coding_block_size = vl_rbsp_ue(rbsp);
490 sps->pcm_loop_filter_disabled_flag = vl_rbsp_u(rbsp, 1);
491 }
492
493 sps->num_short_term_ref_pic_sets = vl_rbsp_ue(rbsp);
494
495 for (i = 0; i < sps->num_short_term_ref_pic_sets; ++i) {
496 struct ref_pic_set *rps;
497
498 rps = (struct ref_pic_set *)
499 priv->codec_data.h265.ref_pic_set_list + i;
500 st_ref_pic_set(priv, rbsp, rps, sps, i);
501 }
502
503 sps->long_term_ref_pics_present_flag = vl_rbsp_u(rbsp, 1);
504 if (sps->long_term_ref_pics_present_flag) {
505 sps->num_long_term_ref_pics_sps = vl_rbsp_ue(rbsp);
506 for (i = 0; i < sps->num_long_term_ref_pics_sps; ++i) {
507 /* lt_ref_pic_poc_lsb_sps */
508 vl_rbsp_u(rbsp, sps->log2_max_pic_order_cnt_lsb_minus4 + 4);
509 /* used_by_curr_pic_lt_sps_flag */
510 vl_rbsp_u(rbsp, 1);
511 }
512 }
513
514 sps->sps_temporal_mvp_enabled_flag = vl_rbsp_u(rbsp, 1);
515 sps->strong_intra_smoothing_enabled_flag = vl_rbsp_u(rbsp, 1);
516 }
517
pic_parameter_set_id(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp)518 static struct pipe_h265_pps *pic_parameter_set_id(vid_dec_PrivateType *priv,
519 struct vl_rbsp *rbsp)
520 {
521 unsigned id = vl_rbsp_ue(rbsp);
522
523 if (id >= ARRAY_SIZE(priv->codec_data.h265.pps))
524 return NULL;
525
526 return &priv->codec_data.h265.pps[id];
527 }
528
picture_parameter_set(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp)529 static void picture_parameter_set(vid_dec_PrivateType *priv,
530 struct vl_rbsp *rbsp)
531 {
532 struct pipe_h265_sps *sps;
533 struct pipe_h265_pps *pps;
534 int i;
535
536 pps = pic_parameter_set_id(priv, rbsp);
537 if (!pps)
538 return;
539
540 memset(pps, 0, sizeof(*pps));
541 sps = pps->sps = seq_parameter_set_id(priv, rbsp);
542 if (!sps)
543 return;
544
545 pps->dependent_slice_segments_enabled_flag = vl_rbsp_u(rbsp, 1);
546 pps->output_flag_present_flag = vl_rbsp_u(rbsp, 1);
547 pps->num_extra_slice_header_bits = vl_rbsp_u(rbsp, 3);
548 pps->sign_data_hiding_enabled_flag = vl_rbsp_u(rbsp, 1);
549 pps->cabac_init_present_flag = vl_rbsp_u(rbsp, 1);
550
551 pps->num_ref_idx_l0_default_active_minus1 = vl_rbsp_ue(rbsp);
552 pps->num_ref_idx_l1_default_active_minus1 = vl_rbsp_ue(rbsp);
553 pps->init_qp_minus26 = vl_rbsp_se(rbsp);
554 pps->constrained_intra_pred_flag = vl_rbsp_u(rbsp, 1);
555 pps->transform_skip_enabled_flag = vl_rbsp_u(rbsp, 1);
556
557 pps->cu_qp_delta_enabled_flag = vl_rbsp_u(rbsp, 1);
558 if (pps->cu_qp_delta_enabled_flag)
559 pps->diff_cu_qp_delta_depth = vl_rbsp_ue(rbsp);
560
561 pps->pps_cb_qp_offset = vl_rbsp_se(rbsp);
562 pps->pps_cr_qp_offset = vl_rbsp_se(rbsp);
563 pps->pps_slice_chroma_qp_offsets_present_flag = vl_rbsp_u(rbsp, 1);
564
565 pps->weighted_pred_flag = vl_rbsp_u(rbsp, 1);
566 pps->weighted_bipred_flag = vl_rbsp_u(rbsp, 1);
567
568 pps->transquant_bypass_enabled_flag = vl_rbsp_u(rbsp, 1);
569 pps->tiles_enabled_flag = vl_rbsp_u(rbsp, 1);
570 pps->entropy_coding_sync_enabled_flag = vl_rbsp_u(rbsp, 1);
571
572 if (pps->tiles_enabled_flag) {
573 pps->num_tile_columns_minus1 = vl_rbsp_ue(rbsp);
574 pps->num_tile_rows_minus1 = vl_rbsp_ue(rbsp);
575
576 pps->uniform_spacing_flag = vl_rbsp_u(rbsp, 1);
577 if (!pps->uniform_spacing_flag) {
578 for (i = 0; i < pps->num_tile_columns_minus1; ++i)
579 pps->column_width_minus1[i] = vl_rbsp_ue(rbsp);
580
581 for (i = 0; i < pps->num_tile_rows_minus1; ++i)
582 pps->row_height_minus1[i] = vl_rbsp_ue(rbsp);
583 }
584
585 if (!pps->num_tile_columns_minus1 || !pps->num_tile_rows_minus1)
586 pps->loop_filter_across_tiles_enabled_flag = vl_rbsp_u(rbsp, 1);
587 }
588
589 pps->pps_loop_filter_across_slices_enabled_flag = vl_rbsp_u(rbsp, 1);
590
591 pps->deblocking_filter_control_present_flag = vl_rbsp_u(rbsp, 1);
592 if (pps->deblocking_filter_control_present_flag) {
593 pps->deblocking_filter_override_enabled_flag = vl_rbsp_u(rbsp, 1);
594 pps->pps_deblocking_filter_disabled_flag = vl_rbsp_u(rbsp, 1);
595 if (!pps->pps_deblocking_filter_disabled_flag) {
596 pps->pps_beta_offset_div2 = vl_rbsp_se(rbsp);
597 pps->pps_tc_offset_div2 = vl_rbsp_se(rbsp);
598 }
599 }
600
601 /* pps_scaling_list_data_present_flag */
602 if (vl_rbsp_u(rbsp, 1))
603 scaling_list_data(priv, rbsp, sps);
604
605 pps->lists_modification_present_flag = vl_rbsp_u(rbsp, 1);
606 pps->log2_parallel_merge_level_minus2 = vl_rbsp_ue(rbsp);
607 pps->slice_segment_header_extension_present_flag = vl_rbsp_u(rbsp, 1);
608 }
609
vid_dec_h265_BeginFrame(vid_dec_PrivateType * priv)610 static void vid_dec_h265_BeginFrame(vid_dec_PrivateType *priv)
611 {
612 if (priv->frame_started)
613 return;
614
615 if (!priv->codec) {
616 struct pipe_video_codec templat = {};
617 omx_base_video_PortType *port = (omx_base_video_PortType *)
618 priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX];
619
620 templat.profile = priv->profile;
621 templat.entrypoint = PIPE_VIDEO_ENTRYPOINT_BITSTREAM;
622 templat.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420;
623 templat.expect_chunked_decode = true;
624 templat.width = priv->codec_data.h265.pic_width_in_luma_samples;
625 templat.height = priv->codec_data.h265.pic_height_in_luma_samples;
626 templat.level = priv->codec_data.h265.level_idc;
627 priv->codec = priv->pipe->create_video_codec(priv->pipe, &templat);
628
629 /* disable transcode tunnel if video size is different from coded size */
630 if (priv->codec_data.h265.pic_width_in_luma_samples !=
631 port->sPortParam.format.video.nFrameWidth ||
632 priv->codec_data.h265.pic_height_in_luma_samples !=
633 port->sPortParam.format.video.nFrameHeight)
634 priv->disable_tunnel = true;
635 }
636
637 vid_dec_NeedTarget(priv);
638
639 if (priv->first_buf_in_frame)
640 priv->timestamp = priv->timestamps[0];
641 priv->first_buf_in_frame = false;
642
643 priv->codec->begin_frame(priv->codec, priv->target, &priv->picture.base);
644 priv->frame_started = true;
645 }
646
vid_dec_h265_Flush(vid_dec_PrivateType * priv,OMX_TICKS * timestamp)647 static struct pipe_video_buffer *vid_dec_h265_Flush(vid_dec_PrivateType *priv,
648 OMX_TICKS *timestamp)
649 {
650 struct dpb_list *entry, *result = NULL;
651 struct pipe_video_buffer *buf;
652
653 /* search for the lowest poc and break on zeros */
654 LIST_FOR_EACH_ENTRY(entry, &priv->codec_data.h265.dpb_list, list) {
655
656 if (result && entry->poc == 0)
657 break;
658
659 if (!result || entry->poc < result->poc)
660 result = entry;
661 }
662
663 if (!result)
664 return NULL;
665
666 buf = result->buffer;
667 if (timestamp)
668 *timestamp = result->timestamp;
669
670 --priv->codec_data.h265.dpb_num;
671 LIST_DEL(&result->list);
672 FREE(result);
673
674 return buf;
675 }
676
vid_dec_h265_EndFrame(vid_dec_PrivateType * priv)677 static void vid_dec_h265_EndFrame(vid_dec_PrivateType *priv)
678 {
679 struct dpb_list *entry = NULL;
680 struct pipe_video_buffer *tmp;
681 struct ref_pic_set *rps;
682 int i;
683 OMX_TICKS timestamp;
684
685 if (!priv->frame_started)
686 return;
687
688 priv->picture.h265.NumPocStCurrBefore = 0;
689 priv->picture.h265.NumPocStCurrAfter = 0;
690 memset(priv->picture.h265.RefPicSetStCurrBefore, 0, 8);
691 memset(priv->picture.h265.RefPicSetStCurrAfter, 0, 8);
692 for (i = 0; i < MAX_NUM_REF_PICS; ++i) {
693 priv->picture.h265.ref[i] = NULL;
694 priv->picture.h265.PicOrderCntVal[i] = 0;
695 }
696
697 rps = priv->codec_data.h265.rps;
698
699 if (rps) {
700 unsigned bf = 0, af = 0;
701
702 priv->picture.h265.NumDeltaPocsOfRefRpsIdx = rps->num_delta_poc;
703 for (i = 0; i < rps->num_pics; ++i) {
704 priv->picture.h265.PicOrderCntVal[i] =
705 rps->delta_poc[i] + get_poc(priv);
706
707 LIST_FOR_EACH_ENTRY(entry, &priv->codec_data.h265.dpb_list, list) {
708 if (entry->poc == priv->picture.h265.PicOrderCntVal[i]) {
709 priv->picture.h265.ref[i] = entry->buffer;
710 break;
711 }
712 }
713
714 if (rps->used[i]) {
715 if (i < rps->num_neg_pics) {
716 priv->picture.h265.NumPocStCurrBefore++;
717 priv->picture.h265.RefPicSetStCurrBefore[bf++] = i;
718 } else {
719 priv->picture.h265.NumPocStCurrAfter++;
720 priv->picture.h265.RefPicSetStCurrAfter[af++] = i;
721 }
722 }
723 }
724 }
725
726 priv->codec->end_frame(priv->codec, priv->target, &priv->picture.base);
727 priv->frame_started = false;
728
729 /* add the decoded picture to the dpb list */
730 entry = CALLOC_STRUCT(dpb_list);
731 if (!entry)
732 return;
733
734 priv->first_buf_in_frame = true;
735 entry->buffer = priv->target;
736 entry->timestamp = priv->timestamp;
737 entry->poc = get_poc(priv);
738
739 LIST_ADDTAIL(&entry->list, &priv->codec_data.h265.dpb_list);
740 ++priv->codec_data.h265.dpb_num;
741 priv->target = NULL;
742
743 if (priv->codec_data.h265.dpb_num <= DPB_MAX_SIZE)
744 return;
745
746 tmp = priv->in_buffers[0]->pInputPortPrivate;
747 priv->in_buffers[0]->pInputPortPrivate = vid_dec_h265_Flush(priv, ×tamp);
748 priv->in_buffers[0]->nTimeStamp = timestamp;
749 priv->target = tmp;
750 priv->frame_finished = priv->in_buffers[0]->pInputPortPrivate != NULL;
751 if (priv->frame_finished &&
752 (priv->in_buffers[0]->nFlags & OMX_BUFFERFLAG_EOS))
753 FREE(priv->codec_data.h265.ref_pic_set_list);
754 }
755
slice_header(vid_dec_PrivateType * priv,struct vl_rbsp * rbsp,unsigned nal_unit_type)756 static void slice_header(vid_dec_PrivateType *priv, struct vl_rbsp *rbsp,
757 unsigned nal_unit_type)
758 {
759 struct pipe_h265_pps *pps;
760 struct pipe_h265_sps *sps;
761 bool first_slice_segment_in_pic_flag;
762 bool dependent_slice_segment_flag = false;
763 struct ref_pic_set *rps;
764 unsigned poc_lsb, poc_msb, slice_prev_poc;
765 unsigned max_poc_lsb, prev_poc_lsb, prev_poc_msb;
766 unsigned num_st_rps;
767 int i;
768
769 if (priv->picture.h265.IDRPicFlag != is_idr_picture(nal_unit_type))
770 vid_dec_h265_EndFrame(priv);
771
772 priv->picture.h265.IDRPicFlag = is_idr_picture(nal_unit_type);
773
774 first_slice_segment_in_pic_flag = vl_rbsp_u(rbsp, 1);
775
776 if (is_rap_picture(nal_unit_type))
777 /* no_output_of_prior_pics_flag */
778 vl_rbsp_u(rbsp, 1);
779
780 pps = pic_parameter_set_id(priv, rbsp);
781 if (!pps)
782 return;
783
784 sps = pps->sps;
785 if (!sps)
786 return;
787
788 if (pps != priv->picture.h265.pps)
789 vid_dec_h265_EndFrame(priv);
790
791 priv->picture.h265.pps = pps;
792
793 if (priv->picture.h265.RAPPicFlag != is_rap_picture(nal_unit_type))
794 vid_dec_h265_EndFrame(priv);
795 priv->picture.h265.RAPPicFlag = is_rap_picture(nal_unit_type);
796
797 num_st_rps = sps->num_short_term_ref_pic_sets;
798
799 if (priv->picture.h265.CurrRpsIdx != num_st_rps)
800 vid_dec_h265_EndFrame(priv);
801 priv->picture.h265.CurrRpsIdx = num_st_rps;
802
803 if (!first_slice_segment_in_pic_flag) {
804 int size, num;
805 int bits_slice_segment_address = 0;
806
807 if (pps->dependent_slice_segments_enabled_flag)
808 dependent_slice_segment_flag = vl_rbsp_u(rbsp, 1);
809
810 size = 1 << (sps->log2_min_luma_coding_block_size_minus3 + 3 +
811 sps->log2_diff_max_min_luma_coding_block_size);
812
813 num = ((sps->pic_width_in_luma_samples + size - 1) / size) *
814 ((sps->pic_height_in_luma_samples + size - 1) / size);
815
816 while (num > (1 << bits_slice_segment_address))
817 bits_slice_segment_address++;
818
819 /* slice_segment_address */
820 vl_rbsp_u(rbsp, bits_slice_segment_address);
821 }
822
823 if (dependent_slice_segment_flag)
824 return;
825
826 for (i = 0; i < pps->num_extra_slice_header_bits; ++i)
827 /* slice_reserved_flag */
828 vl_rbsp_u(rbsp, 1);
829
830 /* slice_type */
831 vl_rbsp_ue(rbsp);
832
833 if (pps->output_flag_present_flag)
834 /* pic output flag */
835 vl_rbsp_u(rbsp, 1);
836
837 if (sps->separate_colour_plane_flag)
838 /* colour_plane_id */
839 vl_rbsp_u(rbsp, 2);
840
841 if (is_idr_picture(nal_unit_type)) {
842 set_poc(priv, nal_unit_type, 0);
843 return;
844 }
845
846 /* slice_pic_order_cnt_lsb */
847 poc_lsb =
848 vl_rbsp_u(rbsp, sps->log2_max_pic_order_cnt_lsb_minus4 + 4);
849
850 slice_prev_poc = (int)priv->codec_data.h265.slice_prev_poc;
851 max_poc_lsb = 1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4);
852
853 prev_poc_lsb = slice_prev_poc & (max_poc_lsb - 1);
854 prev_poc_msb = slice_prev_poc - prev_poc_lsb;
855
856 if ((poc_lsb < prev_poc_lsb) &&
857 ((prev_poc_lsb - poc_lsb ) >= (max_poc_lsb / 2)))
858 poc_msb = prev_poc_msb + max_poc_lsb;
859
860 else if ((poc_lsb > prev_poc_lsb ) &&
861 ((poc_lsb - prev_poc_lsb) > (max_poc_lsb / 2)))
862 poc_msb = prev_poc_msb - max_poc_lsb;
863
864 else
865 poc_msb = prev_poc_msb;
866
867 if (is_bla_picture(nal_unit_type))
868 poc_msb = 0;
869
870 if (get_poc(priv) != poc_msb + poc_lsb)
871 vid_dec_h265_EndFrame(priv);
872
873 set_poc(priv, nal_unit_type, (poc_msb + poc_lsb));
874
875 /* short_term_ref_pic_set_sps_flag */
876 if (!vl_rbsp_u(rbsp, 1)) {
877 rps = (struct ref_pic_set *)
878 priv->codec_data.h265.ref_pic_set_list + num_st_rps;
879 st_ref_pic_set(priv, rbsp, rps, sps, num_st_rps);
880
881 } else if (num_st_rps > 1) {
882 int num_bits = 0;
883 unsigned idx;
884
885 while ((1 << num_bits) < num_st_rps)
886 num_bits++;
887
888 if (num_bits > 0)
889 /* short_term_ref_pic_set_idx */
890 idx = vl_rbsp_u(rbsp, num_bits);
891 else
892 idx = 0;
893
894 rps = (struct ref_pic_set *)
895 priv->codec_data.h265.ref_pic_set_list + idx;
896 } else
897 rps = (struct ref_pic_set *)
898 priv->codec_data.h265.ref_pic_set_list;
899
900 if (is_bla_picture(nal_unit_type)) {
901 rps->num_neg_pics = 0;
902 rps->num_pos_pics = 0;
903 rps->num_pics = 0;
904 }
905
906 priv->codec_data.h265.rps = rps;
907
908 return;
909 }
910
vid_dec_h265_Decode(vid_dec_PrivateType * priv,struct vl_vlc * vlc,unsigned min_bits_left)911 static void vid_dec_h265_Decode(vid_dec_PrivateType *priv,
912 struct vl_vlc *vlc,
913 unsigned min_bits_left)
914 {
915 unsigned nal_unit_type;
916 unsigned nuh_layer_id;
917 unsigned nuh_temporal_id_plus1;
918
919 if (!vl_vlc_search_byte(vlc, vl_vlc_bits_left(vlc) - min_bits_left, 0x00))
920 return;
921
922 if (vl_vlc_peekbits(vlc, 24) != 0x000001) {
923 vl_vlc_eatbits(vlc, 8);
924 return;
925 }
926
927 if (priv->slice) {
928 unsigned bytes = priv->bytes_left - (vl_vlc_bits_left(vlc) / 8);
929
930 priv->codec->decode_bitstream(priv->codec, priv->target,
931 &priv->picture.base, 1,
932 &priv->slice, &bytes);
933 priv->slice = NULL;
934 }
935
936 vl_vlc_eatbits(vlc, 24);
937
938 /* forbidden_zero_bit */
939 vl_vlc_eatbits(vlc, 1);
940
941 if (vl_vlc_valid_bits(vlc) < 15)
942 vl_vlc_fillbits(vlc);
943
944 nal_unit_type = vl_vlc_get_uimsbf(vlc, 6);
945
946 /* nuh_layer_id */
947 nuh_layer_id = vl_vlc_get_uimsbf(vlc, 6);
948
949 /* nuh_temporal_id_plus1 */
950 nuh_temporal_id_plus1 = vl_vlc_get_uimsbf(vlc, 3);
951 priv->codec_data.h265.temporal_id = nuh_temporal_id_plus1 - 1;
952
953 if (!is_slice_picture(nal_unit_type))
954 vid_dec_h265_EndFrame(priv);
955
956 if (nal_unit_type == NAL_UNIT_TYPE_SPS) {
957 struct vl_rbsp rbsp;
958
959 vl_rbsp_init(&rbsp, vlc, ~0);
960 seq_parameter_set(priv, &rbsp);
961
962 } else if (nal_unit_type == NAL_UNIT_TYPE_PPS) {
963 struct vl_rbsp rbsp;
964
965 vl_rbsp_init(&rbsp, vlc, ~0);
966 picture_parameter_set(priv, &rbsp);
967
968 } else if (is_slice_picture(nal_unit_type)) {
969 unsigned bits = vl_vlc_valid_bits(vlc);
970 unsigned bytes = bits / 8 + 5;
971 struct vl_rbsp rbsp;
972 uint8_t buf[9];
973 const void *ptr = buf;
974 unsigned i;
975
976 buf[0] = 0x0;
977 buf[1] = 0x0;
978 buf[2] = 0x1;
979 buf[3] = nal_unit_type << 1 | nuh_layer_id >> 5;
980 buf[4] = nuh_layer_id << 3 | nuh_temporal_id_plus1;
981 for (i = 5; i < bytes; ++i)
982 buf[i] = vl_vlc_peekbits(vlc, bits) >> ((bytes - i - 1) * 8);
983
984 priv->bytes_left = (vl_vlc_bits_left(vlc) - bits) / 8;
985 priv->slice = vlc->data;
986
987 vl_rbsp_init(&rbsp, vlc, 128);
988 slice_header(priv, &rbsp, nal_unit_type);
989
990 vid_dec_h265_BeginFrame(priv);
991
992 priv->codec->decode_bitstream(priv->codec, priv->target,
993 &priv->picture.base, 1,
994 &ptr, &bytes);
995 }
996
997 /* resync to byte boundary */
998 vl_vlc_eatbits(vlc, vl_vlc_valid_bits(vlc) % 8);
999 }
1000
vid_dec_h265_Init(vid_dec_PrivateType * priv)1001 void vid_dec_h265_Init(vid_dec_PrivateType *priv)
1002 {
1003 priv->picture.base.profile = PIPE_VIDEO_PROFILE_HEVC_MAIN;
1004
1005 LIST_INITHEAD(&priv->codec_data.h265.dpb_list);
1006 priv->codec_data.h265.ref_pic_set_list = (struct ref_pic_set *)
1007 CALLOC(MAX_NUM_REF_PICS, sizeof(struct ref_pic_set));
1008
1009 priv->Decode = vid_dec_h265_Decode;
1010 priv->EndFrame = vid_dec_h265_EndFrame;
1011 priv->Flush = vid_dec_h265_Flush;
1012 priv->first_buf_in_frame = true;
1013 }
1014