1 /******************************************************************************
2 *
3 * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18 /**
19 *******************************************************************************
20 * @file
21 * ihevcd_parse_headers.c
22 *
23 * @brief
24 * Contains functions for parsing headers
25 *
26 * @author
27 * Harish
28 *
29 * @par List of Functions:
30 *
31 * @remarks
32 * None
33 *
34 *******************************************************************************
35 */
36
37 /*****************************************************************************/
38 /* File Includes */
39 /*****************************************************************************/
40 #include <stdio.h>
41 #include <stddef.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <assert.h>
45
46 #include "ihevc_typedefs.h"
47 #include "iv.h"
48 #include "ivd.h"
49 #include "ihevcd_cxa.h"
50
51 #include "ihevc_defs.h"
52 #include "ihevc_debug.h"
53 #include "ihevc_defs.h"
54 #include "ihevc_structs.h"
55 #include "ihevc_buf_mgr.h"
56 #include "ihevc_dpb_mgr.h"
57 #include "ihevc_macros.h"
58 #include "ihevc_platform_macros.h"
59 #include "ihevc_cabac_tables.h"
60 #include "ihevc_common_tables.h"
61 #include "ihevc_quant_tables.h"
62
63 #include "ihevcd_trace.h"
64 #include "ihevcd_defs.h"
65 #include "ihevcd_function_selector.h"
66 #include "ihevcd_structs.h"
67 #include "ihevcd_error.h"
68 #include "ihevcd_debug.h"
69 #include "ihevcd_nal.h"
70 #include "ihevcd_bitstream.h"
71 #include "ihevcd_parse_headers.h"
72 #include "ihevcd_ref_list.h"
73
74 #define COPY_DEFAULT_SCALING_LIST(pi2_scaling_mat) \
75 { \
76 WORD32 scaling_mat_offset[]={0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040}; \
77 \
78 /* scaling matrix for 4x4 */ \
79 memcpy(pi2_scaling_mat, gi2_flat_scale_mat_32x32, 6*16*sizeof(WORD16)); \
80 /* scaling matrix for 8x8 */ \
81 memcpy(pi2_scaling_mat + scaling_mat_offset[6], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \
82 memcpy(pi2_scaling_mat + scaling_mat_offset[7], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \
83 memcpy(pi2_scaling_mat + scaling_mat_offset[8], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \
84 memcpy(pi2_scaling_mat + scaling_mat_offset[9], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \
85 memcpy(pi2_scaling_mat + scaling_mat_offset[10], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \
86 memcpy(pi2_scaling_mat + scaling_mat_offset[11], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \
87 /* scaling matrix for 16x16 */ \
88 memcpy(pi2_scaling_mat + scaling_mat_offset[12], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \
89 memcpy(pi2_scaling_mat + scaling_mat_offset[13], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \
90 memcpy(pi2_scaling_mat + scaling_mat_offset[14], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \
91 memcpy(pi2_scaling_mat + scaling_mat_offset[15], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \
92 memcpy(pi2_scaling_mat + scaling_mat_offset[16], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \
93 memcpy(pi2_scaling_mat + scaling_mat_offset[17], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \
94 /* scaling matrix for 32x32 */ \
95 memcpy(pi2_scaling_mat + scaling_mat_offset[18], gi2_intra_default_scale_mat_32x32, 1024*sizeof(WORD16)); \
96 memcpy(pi2_scaling_mat + scaling_mat_offset[19], gi2_inter_default_scale_mat_32x32, 1024*sizeof(WORD16)); \
97 }
98
99 #define COPY_FLAT_SCALING_LIST(pi2_scaling_mat) \
100 { \
101 WORD32 scaling_mat_offset[]={0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040}; \
102 \
103 /* scaling matrix for 4x4 */ \
104 memcpy(pi2_scaling_mat, gi2_flat_scale_mat_32x32, 6*16*sizeof(WORD16)); \
105 /* scaling matrix for 8x8 */ \
106 memcpy(pi2_scaling_mat + scaling_mat_offset[6], gi2_flat_scale_mat_32x32, 6*64*sizeof(WORD16)); \
107 /* scaling matrix for 16x16 */ \
108 memcpy(pi2_scaling_mat + scaling_mat_offset[12], gi2_flat_scale_mat_32x32, 3*256*sizeof(WORD16)); \
109 memcpy(pi2_scaling_mat + scaling_mat_offset[15], gi2_flat_scale_mat_32x32, 3*256*sizeof(WORD16)); \
110 /* scaling matrix for 32x32 */ \
111 memcpy(pi2_scaling_mat + scaling_mat_offset[18], gi2_flat_scale_mat_32x32, 1024*sizeof(WORD16)); \
112 memcpy(pi2_scaling_mat + scaling_mat_offset[19], gi2_flat_scale_mat_32x32, 1024*sizeof(WORD16)); \
113 }
114
115 /* Function declarations */
116
117 /**
118 *******************************************************************************
119 *
120 * @brief
121 * Parses Prediction weight table syntax
122 *
123 * @par Description:
124 * Parse Prediction weight table syntax as per Section: 7.3.8.4
125 *
126 * @param[in] ps_bitstrm
127 * Pointer to bitstream context
128 *
129 * @param[in] ps_sps
130 * Current SPS
131 *
132 * @param[in] ps_pps
133 * Current PPS
134 *
135 * @param[in] ps_slice_hdr
136 * Current Slice header
137 *
138 * @returns Error code from IHEVCD_ERROR_T
139 *
140 * @remarks
141 *
142 *
143 *******************************************************************************
144 */
145
ihevcd_parse_pred_wt_ofst(bitstrm_t * ps_bitstrm,sps_t * ps_sps,pps_t * ps_pps,slice_header_t * ps_slice_hdr)146 WORD32 ihevcd_parse_pred_wt_ofst(bitstrm_t *ps_bitstrm,
147 sps_t *ps_sps,
148 pps_t *ps_pps,
149 slice_header_t *ps_slice_hdr)
150 {
151 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
152 WORD32 value;
153 WORD32 i;
154
155 pred_wt_ofst_t *ps_wt_ofst = &ps_slice_hdr->s_wt_ofst;
156 UNUSED(ps_pps);
157
158 UEV_PARSE("luma_log2_weight_denom", value, ps_bitstrm);
159 ps_wt_ofst->i1_luma_log2_weight_denom = value;
160
161 if(ps_sps->i1_chroma_format_idc != 0)
162 {
163 SEV_PARSE("delta_chroma_log2_weight_denom", value, ps_bitstrm);
164 ps_wt_ofst->i1_chroma_log2_weight_denom = ps_wt_ofst->i1_luma_log2_weight_denom + value;
165 }
166
167 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
168 {
169 BITS_PARSE("luma_weight_l0_flag[ i ]", value, ps_bitstrm, 1);
170 ps_wt_ofst->i1_luma_weight_l0_flag[i] = value;
171 }
172
173
174
175 if(ps_sps->i1_chroma_format_idc != 0)
176 {
177 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
178 {
179 BITS_PARSE("chroma_weight_l0_flag[ i ]", value, ps_bitstrm, 1);
180 ps_wt_ofst->i1_chroma_weight_l0_flag[i] = value;
181 }
182 }
183 else
184 {
185 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
186 {
187 ps_wt_ofst->i1_chroma_weight_l0_flag[i] = 0;
188 }
189 }
190
191
192 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
193 {
194 if(ps_wt_ofst->i1_luma_weight_l0_flag[i])
195 {
196 SEV_PARSE("delta_luma_weight_l0[ i ]", value, ps_bitstrm);
197
198
199 ps_wt_ofst->i2_luma_weight_l0[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom) + value;
200
201 SEV_PARSE("luma_offset_l0[ i ]", value, ps_bitstrm);
202 ps_wt_ofst->i2_luma_offset_l0[i] = value;
203
204 }
205 else
206 {
207 ps_wt_ofst->i2_luma_weight_l0[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom);
208 ps_wt_ofst->i2_luma_offset_l0[i] = 0;
209 }
210 if(ps_wt_ofst->i1_chroma_weight_l0_flag[i])
211 {
212 WORD32 ofst;
213 WORD32 shift = (1 << (BIT_DEPTH_CHROMA - 1));
214 SEV_PARSE("delta_chroma_weight_l0[ i ][ j ]", value, ps_bitstrm);
215 ps_wt_ofst->i2_chroma_weight_l0_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;
216
217
218 SEV_PARSE("delta_chroma_offset_l0[ i ][ j ]", value, ps_bitstrm);
219 ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l0_cb[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
220 ofst = value - ofst + shift;
221
222 ps_wt_ofst->i2_chroma_offset_l0_cb[i] = CLIP_S8(ofst);
223
224 SEV_PARSE("delta_chroma_weight_l0[ i ][ j ]", value, ps_bitstrm);
225 ps_wt_ofst->i2_chroma_weight_l0_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;
226
227
228 SEV_PARSE("delta_chroma_offset_l0[ i ][ j ]", value, ps_bitstrm);
229 ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l0_cr[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
230 ofst = value - ofst + shift;
231
232 ps_wt_ofst->i2_chroma_offset_l0_cr[i] = CLIP_S8(ofst);
233
234 }
235 else
236 {
237 ps_wt_ofst->i2_chroma_weight_l0_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
238 ps_wt_ofst->i2_chroma_weight_l0_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
239
240 ps_wt_ofst->i2_chroma_offset_l0_cb[i] = 0;
241 ps_wt_ofst->i2_chroma_offset_l0_cr[i] = 0;
242 }
243 }
244 if(BSLICE == ps_slice_hdr->i1_slice_type)
245 {
246 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
247 {
248 BITS_PARSE("luma_weight_l1_flag[ i ]", value, ps_bitstrm, 1);
249 ps_wt_ofst->i1_luma_weight_l1_flag[i] = value;
250 }
251
252 if(ps_sps->i1_chroma_format_idc != 0)
253 {
254 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
255 {
256 BITS_PARSE("chroma_weight_l1_flag[ i ]", value, ps_bitstrm, 1);
257 ps_wt_ofst->i1_chroma_weight_l1_flag[i] = value;
258 }
259 }
260 else
261 {
262 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
263 {
264 ps_wt_ofst->i1_chroma_weight_l1_flag[i] = 0;
265 }
266 }
267
268 for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
269 {
270 if(ps_wt_ofst->i1_luma_weight_l1_flag[i])
271 {
272 SEV_PARSE("delta_luma_weight_l1[ i ]", value, ps_bitstrm);
273
274
275 ps_wt_ofst->i2_luma_weight_l1[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom) + value;
276
277 SEV_PARSE("luma_offset_l1[ i ]", value, ps_bitstrm);
278 ps_wt_ofst->i2_luma_offset_l1[i] = value;
279
280 }
281 else
282 {
283 ps_wt_ofst->i2_luma_weight_l1[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom);
284 ps_wt_ofst->i2_luma_offset_l1[i] = 0;
285 }
286
287 if(ps_wt_ofst->i1_chroma_weight_l1_flag[i])
288 {
289 WORD32 ofst;
290 WORD32 shift = (1 << (BIT_DEPTH_CHROMA - 1));
291 SEV_PARSE("delta_chroma_weight_l1[ i ][ j ]", value, ps_bitstrm);
292 ps_wt_ofst->i2_chroma_weight_l1_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;;
293
294
295 SEV_PARSE("delta_chroma_offset_l1[ i ][ j ]", value, ps_bitstrm);
296 ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l1_cb[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
297 ofst = value - ofst + shift;
298
299 ps_wt_ofst->i2_chroma_offset_l1_cb[i] = CLIP_S8(ofst);;
300
301 SEV_PARSE("delta_chroma_weight_l1[ i ][ j ]", value, ps_bitstrm);
302 ps_wt_ofst->i2_chroma_weight_l1_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;
303
304
305 SEV_PARSE("delta_chroma_offset_l1[ i ][ j ]", value, ps_bitstrm);
306 ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l1_cr[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
307 ofst = value - ofst + shift;
308
309 ps_wt_ofst->i2_chroma_offset_l1_cr[i] = CLIP_S8(ofst);;
310
311 }
312 else
313 {
314 ps_wt_ofst->i2_chroma_weight_l1_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
315 ps_wt_ofst->i2_chroma_weight_l1_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
316
317 ps_wt_ofst->i2_chroma_offset_l1_cb[i] = 0;
318 ps_wt_ofst->i2_chroma_offset_l1_cr[i] = 0;
319
320 }
321 }
322 }
323 return ret;
324 }
325
326 /**
327 *******************************************************************************
328 *
329 * @brief
330 * Parses short term reference picture set
331 *
332 * @par Description
333 * Parses short term reference picture set as per section 7.3.8.2.
334 * Can be called by either SPS or Slice header parsing modules.
335 *
336 * @param[in] ps_bitstrm
337 * Pointer to bitstream structure
338 *
339 * @param[out] ps_stref_picset_base
340 * Pointer to first short term ref pic set structure
341 *
342 * @param[in] num_short_term_ref_pic_sets
343 * Number of short term reference pic sets
344 *
345 * @param[in] idx
346 * Current short term ref pic set id
347 *
348 * @returns Error code from IHEVCD_ERROR_T
349 *
350 * @remarks
351 *
352 *******************************************************************************
353 */
ihevcd_short_term_ref_pic_set(bitstrm_t * ps_bitstrm,stref_picset_t * ps_stref_picset_base,WORD32 num_short_term_ref_pic_sets,WORD32 idx,stref_picset_t * ps_stref_picset)354 IHEVCD_ERROR_T ihevcd_short_term_ref_pic_set(bitstrm_t *ps_bitstrm,
355 stref_picset_t *ps_stref_picset_base,
356 WORD32 num_short_term_ref_pic_sets,
357 WORD32 idx,
358 stref_picset_t *ps_stref_picset)
359 {
360 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
361 WORD32 value;
362 stref_picset_t *ps_stref_picset_ref;
363 WORD32 delta_idx, delta_rps;
364 WORD32 r_idx;
365 WORD32 i;
366 WORD32 j, k, temp;
367 if(idx > 0)
368 {
369 BITS_PARSE("inter_ref_pic_set_prediction_flag", value, ps_bitstrm, 1);
370 ps_stref_picset->i1_inter_ref_pic_set_prediction_flag = value;
371 }
372 else
373 ps_stref_picset->i1_inter_ref_pic_set_prediction_flag = 0;
374
375 if(ps_stref_picset->i1_inter_ref_pic_set_prediction_flag)
376 {
377 WORD32 delta_rps_sign;
378 WORD32 abs_delta_rps;
379 WORD32 num_neg_pics = 0;
380 WORD32 num_pos_pics = 0;
381 WORD32 num_pics = 0;
382
383 if(idx == num_short_term_ref_pic_sets)
384 {
385 UEV_PARSE("delta_idx_minus1", value, ps_bitstrm);
386 delta_idx = value + 1;
387 }
388 else
389 {
390 delta_idx = 1;
391 }
392 r_idx = idx - delta_idx;
393 r_idx = CLIP3(r_idx, 0, idx - 1);
394
395 ps_stref_picset_ref = ps_stref_picset_base + r_idx;
396
397 BITS_PARSE("delta_rps_sign", value, ps_bitstrm, 1);
398 delta_rps_sign = value;
399
400 UEV_PARSE("abs_delta_rps_minus1", value, ps_bitstrm);
401 abs_delta_rps = value + 1;
402
403 delta_rps = (1 - 2 * delta_rps_sign) * (abs_delta_rps);
404
405
406
407 for(i = 0; i <= ps_stref_picset_ref->i1_num_delta_pocs; i++)
408 {
409 WORD32 ref_idc;
410
411 /*****************************************************************/
412 /* ref_idc is parsed as below */
413 /* bits "1" ref_idc 1 */
414 /* bits "01" ref_idc 2 */
415 /* bits "00" ref_idc 0 */
416 /*****************************************************************/
417 BITS_PARSE("used_by_curr_pic_flag", value, ps_bitstrm, 1);
418 ref_idc = value;
419 ps_stref_picset->ai1_used[num_pics] = value;
420 /* If ref_idc is zero check for next bit */
421 if(0 == ref_idc)
422 {
423 BITS_PARSE("use_delta_flag", value, ps_bitstrm, 1);
424 ps_stref_picset->ai1_used[i] = value;
425 ref_idc = value << 1;
426 }
427 if((ref_idc == 1) || (ref_idc == 2))
428 {
429 WORD32 delta_poc;
430 delta_poc = delta_rps;
431 delta_poc +=
432 ((i < ps_stref_picset_ref->i1_num_delta_pocs) ?
433 ps_stref_picset_ref->ai2_delta_poc[i] :
434 0);
435
436 ps_stref_picset->ai2_delta_poc[num_pics] = delta_poc;
437
438 if(delta_poc < 0)
439 {
440 num_neg_pics++;
441 }
442 else
443 {
444 num_pos_pics++;
445 }
446 num_pics++;
447 }
448 ps_stref_picset->ai1_ref_idc[i] = ref_idc;
449 }
450
451 num_neg_pics = CLIP3(num_neg_pics, 0, MAX_DPB_SIZE - 1);
452 num_pos_pics = CLIP3(num_pos_pics, 0, (MAX_DPB_SIZE - 1 - num_neg_pics));
453 num_pics = num_neg_pics + num_pos_pics;
454
455 ps_stref_picset->i1_num_ref_idc =
456 ps_stref_picset_ref->i1_num_delta_pocs + 1;
457 ps_stref_picset->i1_num_delta_pocs = num_pics;
458 ps_stref_picset->i1_num_pos_pics = num_pos_pics;
459 ps_stref_picset->i1_num_neg_pics = num_neg_pics;
460
461
462 for(j = 1; j < num_pics; j++)
463 {
464 WORD32 delta_poc = ps_stref_picset->ai2_delta_poc[j];
465 WORD8 i1_used = ps_stref_picset->ai1_used[j];
466 for(k = j - 1; k >= 0; k--)
467 {
468 temp = ps_stref_picset->ai2_delta_poc[k];
469 if(delta_poc < temp)
470 {
471 ps_stref_picset->ai2_delta_poc[k + 1] = temp;
472 ps_stref_picset->ai1_used[k + 1] = ps_stref_picset->ai1_used[k];
473 ps_stref_picset->ai2_delta_poc[k] = delta_poc;
474 ps_stref_picset->ai1_used[k] = i1_used;
475 }
476 }
477 }
478 // flip the negative values to largest first
479 for(j = 0, k = num_neg_pics - 1; j < num_neg_pics >> 1; j++, k--)
480 {
481 WORD32 delta_poc = ps_stref_picset->ai2_delta_poc[j];
482 WORD8 i1_used = ps_stref_picset->ai1_used[j];
483 ps_stref_picset->ai2_delta_poc[j] = ps_stref_picset->ai2_delta_poc[k];
484 ps_stref_picset->ai1_used[j] = ps_stref_picset->ai1_used[k];
485 ps_stref_picset->ai2_delta_poc[k] = delta_poc;
486 ps_stref_picset->ai1_used[k] = i1_used;
487 }
488
489 }
490 else
491 {
492 WORD32 prev_poc = 0;
493 WORD32 poc;
494
495 UEV_PARSE("num_negative_pics", value, ps_bitstrm);
496 ps_stref_picset->i1_num_neg_pics = value;
497 ps_stref_picset->i1_num_neg_pics = CLIP3(ps_stref_picset->i1_num_neg_pics,
498 0,
499 MAX_DPB_SIZE - 1);
500
501 UEV_PARSE("num_positive_pics", value, ps_bitstrm);
502 ps_stref_picset->i1_num_pos_pics = value;
503 ps_stref_picset->i1_num_pos_pics = CLIP3(ps_stref_picset->i1_num_pos_pics,
504 0,
505 (MAX_DPB_SIZE - 1 - ps_stref_picset->i1_num_neg_pics));
506
507 ps_stref_picset->i1_num_delta_pocs =
508 ps_stref_picset->i1_num_neg_pics +
509 ps_stref_picset->i1_num_pos_pics;
510
511
512 for(i = 0; i < ps_stref_picset->i1_num_neg_pics; i++)
513 {
514 UEV_PARSE("delta_poc_s0_minus1", value, ps_bitstrm);
515 poc = prev_poc - (value + 1);
516 prev_poc = poc;
517 ps_stref_picset->ai2_delta_poc[i] = poc;
518
519 BITS_PARSE("used_by_curr_pic_s0_flag", value, ps_bitstrm, 1);
520 ps_stref_picset->ai1_used[i] = value;
521
522 }
523 prev_poc = 0;
524 for(i = ps_stref_picset->i1_num_neg_pics;
525 i < ps_stref_picset->i1_num_delta_pocs;
526 i++)
527 {
528 UEV_PARSE("delta_poc_s1_minus1", value, ps_bitstrm);
529 poc = prev_poc + (value + 1);
530 prev_poc = poc;
531 ps_stref_picset->ai2_delta_poc[i] = poc;
532
533 BITS_PARSE("used_by_curr_pic_s1_flag", value, ps_bitstrm, 1);
534 ps_stref_picset->ai1_used[i] = value;
535
536 }
537
538 }
539
540 return ret;
541 }
542
543
ihevcd_parse_sub_layer_hrd_parameters(bitstrm_t * ps_bitstrm,sub_lyr_hrd_params_t * ps_sub_layer_hrd_params,WORD32 cpb_cnt,WORD32 sub_pic_cpb_params_present_flag)544 static WORD32 ihevcd_parse_sub_layer_hrd_parameters(bitstrm_t *ps_bitstrm,
545 sub_lyr_hrd_params_t *ps_sub_layer_hrd_params,
546 WORD32 cpb_cnt,
547 WORD32 sub_pic_cpb_params_present_flag)
548 {
549 WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
550 WORD32 i;
551
552 for(i = 0; i <= cpb_cnt; i++)
553 {
554 UEV_PARSE("bit_rate_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_bit_rate_value_minus1[i], ps_bitstrm);
555 UEV_PARSE("cpb_size_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_cpb_size_value_minus1[i], ps_bitstrm);
556
557 if(sub_pic_cpb_params_present_flag)
558 {
559 UEV_PARSE("cpb_size_du_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_cpb_size_du_value_minus1[i], ps_bitstrm);
560 UEV_PARSE("bit_rate_du_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_bit_rate_du_value_minus1[i], ps_bitstrm);
561 }
562 BITS_PARSE("cbr_flag[ i ]", ps_sub_layer_hrd_params->au1_cbr_flag[i], ps_bitstrm, 1);
563 }
564
565 return ret;
566 }
567
568
ihevcd_parse_hrd_parameters(bitstrm_t * ps_bitstrm,hrd_params_t * ps_hrd,WORD32 common_info_present_flag,WORD32 max_num_sub_layers_minus1)569 static WORD32 ihevcd_parse_hrd_parameters(bitstrm_t *ps_bitstrm,
570 hrd_params_t *ps_hrd,
571 WORD32 common_info_present_flag,
572 WORD32 max_num_sub_layers_minus1)
573 {
574 WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
575 WORD32 i;
576
577 ps_hrd->u1_nal_hrd_parameters_present_flag = 0;
578 ps_hrd->u1_vcl_hrd_parameters_present_flag = 0;
579
580 ps_hrd->u1_sub_pic_cpb_params_present_flag = 0;
581
582 ps_hrd->u1_tick_divisor_minus2 = 0;
583 ps_hrd->u1_du_cpb_removal_delay_increment_length_minus1 = 0;
584 ps_hrd->u1_sub_pic_cpb_params_in_pic_timing_sei_flag = 0;
585 ps_hrd->u1_dpb_output_delay_du_length_minus1 = 0;
586
587 ps_hrd->u4_bit_rate_scale = 0;
588 ps_hrd->u4_cpb_size_scale = 0;
589 ps_hrd->u4_cpb_size_du_scale = 0;
590
591 ps_hrd->u1_initial_cpb_removal_delay_length_minus1 = 23;
592 ps_hrd->u1_au_cpb_removal_delay_length_minus1 = 23;
593 ps_hrd->u1_dpb_output_delay_length_minus1 = 23;
594
595 if(common_info_present_flag)
596 {
597 BITS_PARSE("nal_hrd_parameters_present_flag", ps_hrd->u1_nal_hrd_parameters_present_flag, ps_bitstrm, 1);
598 BITS_PARSE("vcl_hrd_parameters_present_flag", ps_hrd->u1_vcl_hrd_parameters_present_flag, ps_bitstrm, 1);
599
600 if(ps_hrd->u1_nal_hrd_parameters_present_flag || ps_hrd->u1_vcl_hrd_parameters_present_flag)
601 {
602 BITS_PARSE("sub_pic_cpb_params_present_flag", ps_hrd->u1_sub_pic_cpb_params_present_flag, ps_bitstrm, 1);
603 if(ps_hrd->u1_sub_pic_cpb_params_present_flag)
604 {
605 BITS_PARSE("tick_divisor_minus2", ps_hrd->u1_tick_divisor_minus2, ps_bitstrm, 8);
606 BITS_PARSE("du_cpb_removal_delay_increment_length_minus1", ps_hrd->u1_du_cpb_removal_delay_increment_length_minus1, ps_bitstrm, 5);
607 BITS_PARSE("sub_pic_cpb_params_in_pic_timing_sei_flag", ps_hrd->u1_sub_pic_cpb_params_in_pic_timing_sei_flag, ps_bitstrm, 1);
608 BITS_PARSE("dpb_output_delay_du_length_minus1", ps_hrd->u1_dpb_output_delay_du_length_minus1, ps_bitstrm, 5);
609 }
610
611 BITS_PARSE("bit_rate_scale", ps_hrd->u4_bit_rate_scale, ps_bitstrm, 4);
612 BITS_PARSE("cpb_size_scale", ps_hrd->u4_cpb_size_scale, ps_bitstrm, 4);
613 if(ps_hrd->u1_sub_pic_cpb_params_present_flag)
614 BITS_PARSE("cpb_size_du_scale", ps_hrd->u4_cpb_size_du_scale, ps_bitstrm, 4);
615
616 BITS_PARSE("initial_cpb_removal_delay_length_minus1", ps_hrd->u1_initial_cpb_removal_delay_length_minus1, ps_bitstrm, 5);
617 BITS_PARSE("au_cpb_removal_delay_length_minus1", ps_hrd->u1_au_cpb_removal_delay_length_minus1, ps_bitstrm, 5);
618 BITS_PARSE("dpb_output_delay_length_minus1", ps_hrd->u1_dpb_output_delay_length_minus1, ps_bitstrm, 5);
619 }
620 }
621
622
623 for(i = 0; i <= max_num_sub_layers_minus1; i++)
624 {
625 BITS_PARSE("fixed_pic_rate_general_flag[ i ]", ps_hrd->au1_fixed_pic_rate_general_flag[i], ps_bitstrm, 1);
626
627 ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i] = 1;
628 ps_hrd->au1_elemental_duration_in_tc_minus1[i] = 0;
629 ps_hrd->au1_low_delay_hrd_flag[i] = 0;
630 ps_hrd->au1_cpb_cnt_minus1[i] = 0;
631
632 if(!ps_hrd->au1_fixed_pic_rate_general_flag[i])
633 BITS_PARSE("fixed_pic_rate_within_cvs_flag[ i ]", ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i], ps_bitstrm, 1);
634
635 if(ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i])
636 {
637 UEV_PARSE("elemental_duration_in_tc_minus1[ i ]", ps_hrd->au1_elemental_duration_in_tc_minus1[i], ps_bitstrm);
638 }
639 else
640 {
641 BITS_PARSE("low_delay_hrd_flag[ i ]", ps_hrd->au1_low_delay_hrd_flag[i], ps_bitstrm, 1);
642 }
643
644 if(!ps_hrd->au1_low_delay_hrd_flag[i])
645 UEV_PARSE("cpb_cnt_minus1[ i ]", ps_hrd->au1_cpb_cnt_minus1[i], ps_bitstrm);
646
647 if(ps_hrd->u1_nal_hrd_parameters_present_flag)
648 ihevcd_parse_sub_layer_hrd_parameters(ps_bitstrm,
649 &ps_hrd->as_sub_layer_hrd_params[i],
650 ps_hrd->au1_cpb_cnt_minus1[i],
651 ps_hrd->u1_sub_pic_cpb_params_present_flag);
652
653 if(ps_hrd->u1_vcl_hrd_parameters_present_flag)
654 ihevcd_parse_sub_layer_hrd_parameters(ps_bitstrm,
655 &ps_hrd->as_sub_layer_hrd_params[i],
656 ps_hrd->au1_cpb_cnt_minus1[i],
657 ps_hrd->u1_sub_pic_cpb_params_present_flag);
658 }
659
660 return ret;
661 }
662
663
ihevcd_parse_vui_parameters(bitstrm_t * ps_bitstrm,vui_t * ps_vui,WORD32 sps_max_sub_layers_minus1)664 static WORD32 ihevcd_parse_vui_parameters(bitstrm_t *ps_bitstrm,
665 vui_t *ps_vui,
666 WORD32 sps_max_sub_layers_minus1)
667 {
668 WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
669
670 BITS_PARSE("aspect_ratio_info_present_flag", ps_vui->u1_aspect_ratio_info_present_flag, ps_bitstrm, 1);
671
672 ps_vui->u1_aspect_ratio_idc = SAR_UNUSED;
673 ps_vui->u2_sar_width = 0;
674 ps_vui->u2_sar_height = 0;
675 if(ps_vui->u1_aspect_ratio_info_present_flag)
676 {
677 BITS_PARSE("aspect_ratio_idc", ps_vui->u1_aspect_ratio_idc, ps_bitstrm, 8);
678 if(ps_vui->u1_aspect_ratio_idc == EXTENDED_SAR)
679 {
680 BITS_PARSE("sar_width", ps_vui->u2_sar_width, ps_bitstrm, 16);
681 BITS_PARSE("sar_height", ps_vui->u2_sar_height, ps_bitstrm, 16);
682 }
683 }
684
685 BITS_PARSE("overscan_info_present_flag", ps_vui->u1_overscan_info_present_flag, ps_bitstrm, 1);
686 ps_vui->u1_overscan_appropriate_flag = 0;
687 if(ps_vui->u1_overscan_info_present_flag)
688 BITS_PARSE("overscan_appropriate_flag", ps_vui->u1_overscan_appropriate_flag, ps_bitstrm, 1);
689
690 BITS_PARSE("video_signal_type_present_flag", ps_vui->u1_video_signal_type_present_flag, ps_bitstrm, 1);
691 ps_vui->u1_video_format = VID_FMT_UNSPECIFIED;
692 ps_vui->u1_video_full_range_flag = 0;
693 ps_vui->u1_colour_description_present_flag = 0;
694 ps_vui->u1_colour_primaries = 2;
695 ps_vui->u1_transfer_characteristics = 2;
696 ps_vui->u1_matrix_coefficients = 2;
697
698 if(ps_vui->u1_video_signal_type_present_flag)
699 {
700 BITS_PARSE("video_format", ps_vui->u1_video_format, ps_bitstrm, 3);
701 BITS_PARSE("video_full_range_flag", ps_vui->u1_video_full_range_flag, ps_bitstrm, 1);
702 BITS_PARSE("colour_description_present_flag", ps_vui->u1_colour_description_present_flag, ps_bitstrm, 1);
703 if(ps_vui->u1_colour_description_present_flag)
704 {
705 BITS_PARSE("colour_primaries", ps_vui->u1_colour_primaries, ps_bitstrm, 8);
706 BITS_PARSE("transfer_characteristics", ps_vui->u1_transfer_characteristics, ps_bitstrm, 8);
707 BITS_PARSE("matrix_coeffs", ps_vui->u1_matrix_coefficients, ps_bitstrm, 8);
708 }
709 }
710
711 BITS_PARSE("chroma_loc_info_present_flag", ps_vui->u1_chroma_loc_info_present_flag, ps_bitstrm, 1);
712 ps_vui->u1_chroma_sample_loc_type_top_field = 0;
713 ps_vui->u1_chroma_sample_loc_type_bottom_field = 0;
714 if(ps_vui->u1_chroma_loc_info_present_flag)
715 {
716 UEV_PARSE("chroma_sample_loc_type_top_field", ps_vui->u1_chroma_sample_loc_type_top_field, ps_bitstrm);
717 UEV_PARSE("chroma_sample_loc_type_bottom_field", ps_vui->u1_chroma_sample_loc_type_bottom_field, ps_bitstrm);
718 }
719
720 BITS_PARSE("neutral_chroma_indication_flag", ps_vui->u1_neutral_chroma_indication_flag, ps_bitstrm, 1);
721 BITS_PARSE("field_seq_flag", ps_vui->u1_field_seq_flag, ps_bitstrm, 1);
722 BITS_PARSE("frame_field_info_present_flag", ps_vui->u1_frame_field_info_present_flag, ps_bitstrm, 1);
723 BITS_PARSE("default_display_window_flag", ps_vui->u1_default_display_window_flag, ps_bitstrm, 1);
724 ps_vui->u4_def_disp_win_left_offset = 0;
725 ps_vui->u4_def_disp_win_right_offset = 0;
726 ps_vui->u4_def_disp_win_top_offset = 0;
727 ps_vui->u4_def_disp_win_bottom_offset = 0;
728 if(ps_vui->u1_default_display_window_flag)
729 {
730 UEV_PARSE("def_disp_win_left_offset", ps_vui->u4_def_disp_win_left_offset, ps_bitstrm);
731 UEV_PARSE("def_disp_win_right_offset", ps_vui->u4_def_disp_win_right_offset, ps_bitstrm);
732 UEV_PARSE("def_disp_win_top_offset", ps_vui->u4_def_disp_win_top_offset, ps_bitstrm);
733 UEV_PARSE("def_disp_win_bottom_offset", ps_vui->u4_def_disp_win_bottom_offset, ps_bitstrm);
734 }
735
736 BITS_PARSE("vui_timing_info_present_flag", ps_vui->u1_vui_timing_info_present_flag, ps_bitstrm, 1);
737 if(ps_vui->u1_vui_timing_info_present_flag)
738 {
739 BITS_PARSE("vui_num_units_in_tick", ps_vui->u4_vui_num_units_in_tick, ps_bitstrm, 32);
740 BITS_PARSE("vui_time_scale", ps_vui->u4_vui_time_scale, ps_bitstrm, 32);
741 BITS_PARSE("vui_poc_proportional_to_timing_flag", ps_vui->u1_poc_proportional_to_timing_flag, ps_bitstrm, 1);
742 if(ps_vui->u1_poc_proportional_to_timing_flag)
743 UEV_PARSE("vui_num_ticks_poc_diff_one_minus1", ps_vui->u1_num_ticks_poc_diff_one_minus1, ps_bitstrm);
744
745 BITS_PARSE("vui_hrd_parameters_present_flag", ps_vui->u1_vui_hrd_parameters_present_flag, ps_bitstrm, 1);
746 if(ps_vui->u1_vui_hrd_parameters_present_flag)
747 ihevcd_parse_hrd_parameters(ps_bitstrm, &ps_vui->s_vui_hrd_parameters, 1, sps_max_sub_layers_minus1);
748 }
749
750 BITS_PARSE("bitstream_restriction_flag", ps_vui->u1_bitstream_restriction_flag, ps_bitstrm, 1);
751 ps_vui->u1_tiles_fixed_structure_flag = 0;
752 ps_vui->u1_motion_vectors_over_pic_boundaries_flag = 1;
753 ps_vui->u1_restricted_ref_pic_lists_flag = 0;
754 ps_vui->u4_min_spatial_segmentation_idc = 0;
755 ps_vui->u1_max_bytes_per_pic_denom = 2;
756 ps_vui->u1_max_bits_per_mincu_denom = 1;
757 ps_vui->u1_log2_max_mv_length_horizontal = 15;
758 ps_vui->u1_log2_max_mv_length_vertical = 15;
759 if(ps_vui->u1_bitstream_restriction_flag)
760 {
761 BITS_PARSE("tiles_fixed_structure_flag", ps_vui->u1_tiles_fixed_structure_flag, ps_bitstrm, 1);
762 BITS_PARSE("motion_vectors_over_pic_boundaries_flag", ps_vui->u1_motion_vectors_over_pic_boundaries_flag, ps_bitstrm, 1);
763 BITS_PARSE("restricted_ref_pic_lists_flag", ps_vui->u1_restricted_ref_pic_lists_flag, ps_bitstrm, 1);
764
765 UEV_PARSE("min_spatial_segmentation_idc", ps_vui->u4_min_spatial_segmentation_idc, ps_bitstrm);
766 UEV_PARSE("max_bytes_per_pic_denom", ps_vui->u1_max_bytes_per_pic_denom, ps_bitstrm);
767 UEV_PARSE("max_bits_per_min_cu_denom", ps_vui->u1_max_bits_per_mincu_denom, ps_bitstrm);
768 UEV_PARSE("log2_max_mv_length_horizontal", ps_vui->u1_log2_max_mv_length_horizontal, ps_bitstrm);
769 UEV_PARSE("log2_max_mv_length_vertical", ps_vui->u1_log2_max_mv_length_vertical, ps_bitstrm);
770 }
771
772 return ret;
773 }
774
775 /**
776 *******************************************************************************
777 *
778 * @brief
779 * Parses profile tier and level info for either general layer of sub_layer
780 *
781 * @par Description
782 * Parses profile tier and level info for either general layer of sub_layer
783 * as per section 7.3.3
784 *
785 * Since the same function is called for parsing general_profile and
786 * sub_layer_profile etc, variables do not specify whether the syntax is
787 * for general or sub_layer. Similarly trace functions also do not differentiate
788 *
789 * @param[in] ps_bitstrm
790 * Pointer to bitstream structure
791 *
792 * @param[out] ps_ptl
793 * Pointer to profile, tier level structure
794 *
795 * @returns Error code from IHEVCD_ERROR_T
796 *
797 * @remarks
798 *
799 *******************************************************************************
800 */
801
ihevcd_parse_profile_tier_level_layer(bitstrm_t * ps_bitstrm,profile_tier_lvl_t * ps_ptl)802 static IHEVCD_ERROR_T ihevcd_parse_profile_tier_level_layer(bitstrm_t *ps_bitstrm,
803 profile_tier_lvl_t *ps_ptl)
804 {
805 WORD32 value;
806 WORD32 i;
807 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
808
809 BITS_PARSE("XXX_profile_space[]", value, ps_bitstrm, 2);
810 ps_ptl->i1_profile_space = value;
811
812 BITS_PARSE("XXX_tier_flag[]", value, ps_bitstrm, 1);
813 ps_ptl->i1_tier_flag = value;
814
815 BITS_PARSE("XXX_profile_idc[]", value, ps_bitstrm, 5);
816 ps_ptl->i1_profile_idc = value;
817
818 for(i = 0; i < MAX_PROFILE_COMPATBLTY; i++)
819 {
820 BITS_PARSE("XXX_profile_compatibility_flag[][j]", value, ps_bitstrm, 1);
821 ps_ptl->ai1_profile_compatibility_flag[i] = value;
822 }
823
824 BITS_PARSE("general_progressive_source_flag", value, ps_bitstrm, 1);
825 ps_ptl->i1_general_progressive_source_flag = value;
826
827 BITS_PARSE("general_interlaced_source_flag", value, ps_bitstrm, 1);
828 ps_ptl->i1_general_progressive_source_flag = value;
829
830 BITS_PARSE("general_non_packed_constraint_flag", value, ps_bitstrm, 1);
831 ps_ptl->i1_general_progressive_source_flag = value;
832
833 BITS_PARSE("general_frame_only_constraint_flag", value, ps_bitstrm, 1);
834 ps_ptl->i1_general_progressive_source_flag = value;
835
836 BITS_PARSE("XXX_reserved_zero_44bits[0..15]", value, ps_bitstrm, 16);
837
838 BITS_PARSE("XXX_reserved_zero_44bits[16..31]", value, ps_bitstrm, 16);
839
840 BITS_PARSE("XXX_reserved_zero_44bits[32..43]", value, ps_bitstrm, 12);
841 return ret;
842 }
843
844
845 /**
846 *******************************************************************************
847 *
848 * @brief
849 * Parses profile tier and level info
850 *
851 * @par Description
852 * Parses profile tier and level info as per section 7.3.3
853 * Called during VPS and SPS parsing
854 * calls ihevcd_parse_profile_tier_level() for general layer and each sub_layers
855 *
856 * @param[in] ps_bitstrm
857 * Pointer to bitstream structure
858 *
859 * @param[out] ps_ptl
860 * Pointer to structure that contains profile, tier level for each layers
861 *
862 * @param[in] profile_present
863 * Flag to indicate if profile data is present
864 *
865 * @param[in] max_num_sub_layers
866 * Number of sub layers present
867 *
868 * @returns Error code from IHEVCD_ERROR_T
869 *
870 * @remarks
871 *
872 *******************************************************************************
873 */
874
ihevcd_profile_tier_level(bitstrm_t * ps_bitstrm,profile_tier_lvl_info_t * ps_ptl,WORD32 profile_present,WORD32 max_num_sub_layers)875 static IHEVCD_ERROR_T ihevcd_profile_tier_level(bitstrm_t *ps_bitstrm,
876 profile_tier_lvl_info_t *ps_ptl,
877 WORD32 profile_present,
878 WORD32 max_num_sub_layers)
879 {
880 WORD32 value;
881 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
882 WORD32 i;
883
884 if(profile_present)
885 {
886 ret = ihevcd_parse_profile_tier_level_layer(ps_bitstrm, &ps_ptl->s_ptl_gen);
887 }
888
889 BITS_PARSE("general_level_idc", value, ps_bitstrm, 8);
890 ps_ptl->s_ptl_gen.u1_level_idc = value;
891
892
893 for(i = 0; i < max_num_sub_layers; i++)
894 {
895 BITS_PARSE("sub_layer_profile_present_flag[i]", value, ps_bitstrm, 1);
896 ps_ptl->ai1_sub_layer_profile_present_flag[i] = value;
897
898 BITS_PARSE("sub_layer_level_present_flag[i]", value, ps_bitstrm, 1);
899 ps_ptl->ai1_sub_layer_level_present_flag[i] = value;
900 }
901
902 if(max_num_sub_layers > 0)
903 {
904 for(i = max_num_sub_layers; i < 8; i++)
905 {
906 BITS_PARSE("reserved_zero_2bits", value, ps_bitstrm, 2);
907 }
908 }
909
910 for(i = 0; i < max_num_sub_layers; i++)
911 {
912 if(ps_ptl->ai1_sub_layer_profile_present_flag[i])
913 {
914 ret = ihevcd_parse_profile_tier_level_layer(ps_bitstrm,
915 &ps_ptl->as_ptl_sub[i]);
916 }
917 if(ps_ptl->ai1_sub_layer_level_present_flag[i])
918 {
919 BITS_PARSE("sub_layer_level_idc[i]", value, ps_bitstrm, 8);
920 ps_ptl->as_ptl_sub[i].u1_level_idc = value;
921
922 }
923 }
924
925
926
927 return ret;
928 }
929
930 /**
931 *******************************************************************************
932 *
933 * @brief
934 * Parses Scaling List Data syntax
935 *
936 * @par Description:
937 * Parses Scaling List Data syntax as per Section: 7.3.6
938 *
939 * @param[in] ps_codec
940 * Pointer to codec context
941 *
942 * @returns Error code from IHEVCD_ERROR_T
943 *
944 * @remarks
945 *
946 *
947 *******************************************************************************
948 */
ihevcd_scaling_list_data(codec_t * ps_codec,WORD16 * pi2_scaling_mat)949 IHEVCD_ERROR_T ihevcd_scaling_list_data(codec_t *ps_codec, WORD16 *pi2_scaling_mat)
950 {
951 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
952 WORD32 size_id;
953 WORD32 matrix_id;
954 WORD32 value, dc_value = 0;
955 WORD32 next_coef;
956 WORD32 coef_num;
957 WORD32 i, j, offset;
958 bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
959 WORD16 *pi2_scaling_mat_offset;
960 WORD32 scaling_mat_offset[] = { 0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040 };
961 UWORD8 *scan_table;
962
963 for(size_id = 0; size_id < 4; size_id++)
964 {
965 for(matrix_id = 0; matrix_id < ((size_id == 3) ? 2 : 6); matrix_id++)
966 {
967 WORD32 scaling_list_pred_mode_flag;
968 WORD32 scaling_list_delta_coef;
969 BITS_PARSE("scaling_list_pred_mode_flag", scaling_list_pred_mode_flag, ps_bitstrm, 1);
970
971 offset = size_id * 6 + matrix_id;
972 pi2_scaling_mat_offset = pi2_scaling_mat + scaling_mat_offset[offset];
973
974 if(!scaling_list_pred_mode_flag)
975 {
976 WORD32 num_elements;
977 UEV_PARSE("scaling_list_pred_matrix_id_delta", value,
978 ps_bitstrm);
979 value = CLIP3(value, 0, matrix_id);
980
981 num_elements = (1 << (4 + (size_id << 1)));
982 if(0 != value)
983 memcpy(pi2_scaling_mat_offset, pi2_scaling_mat_offset - value * num_elements, num_elements * sizeof(WORD16));
984 }
985 else
986 {
987 next_coef = 8;
988 coef_num = MIN(64, (1 << (4 + (size_id << 1))));
989
990 if(size_id > 1)
991 {
992 SEV_PARSE("scaling_list_dc_coef_minus8", value,
993 ps_bitstrm);
994
995 next_coef = value + 8;
996 dc_value = next_coef;
997 }
998 if(size_id < 2)
999 {
1000 scan_table = (UWORD8 *)gapv_ihevc_invscan[size_id + 1];
1001
1002 for(i = 0; i < coef_num; i++)
1003 {
1004 SEV_PARSE("scaling_list_delta_coef",
1005 scaling_list_delta_coef, ps_bitstrm);
1006 next_coef = (next_coef + scaling_list_delta_coef + 256)
1007 % 256;
1008 pi2_scaling_mat_offset[scan_table[i]] = next_coef;
1009 }
1010 }
1011 else if(size_id == 2)
1012 {
1013 scan_table = (UWORD8 *)gapv_ihevc_invscan[2];
1014
1015 for(i = 0; i < coef_num; i++)
1016 {
1017 SEV_PARSE("scaling_list_delta_coef",
1018 scaling_list_delta_coef, ps_bitstrm);
1019 next_coef = (next_coef + scaling_list_delta_coef + 256)
1020 % 256;
1021
1022 offset = scan_table[i];
1023 offset = (offset >> 3) * 16 * 2 + (offset & 0x7) * 2;
1024 pi2_scaling_mat_offset[offset] = next_coef;
1025 pi2_scaling_mat_offset[offset + 1] = next_coef;
1026 pi2_scaling_mat_offset[offset + 16] = next_coef;
1027 pi2_scaling_mat_offset[offset + 16 + 1] = next_coef;
1028 }
1029 pi2_scaling_mat_offset[0] = dc_value;
1030 }
1031 else
1032 {
1033 scan_table = (UWORD8 *)gapv_ihevc_invscan[2];
1034
1035 for(i = 0; i < coef_num; i++)
1036 {
1037 SEV_PARSE("scaling_list_delta_coef",
1038 scaling_list_delta_coef, ps_bitstrm);
1039 next_coef = (next_coef + scaling_list_delta_coef + 256)
1040 % 256;
1041
1042 offset = scan_table[i];
1043 offset = (offset >> 3) * 32 * 4 + (offset & 0x7) * 4;
1044
1045 for(j = 0; j < 4; j++)
1046 {
1047 pi2_scaling_mat_offset[offset + j * 32] = next_coef;
1048 pi2_scaling_mat_offset[offset + 1 + j * 32] = next_coef;
1049 pi2_scaling_mat_offset[offset + 2 + j * 32] = next_coef;
1050 pi2_scaling_mat_offset[offset + 3 + j * 32] = next_coef;
1051 }
1052 pi2_scaling_mat_offset[0] = dc_value;
1053 }
1054 }
1055 }
1056 }
1057 }
1058
1059 return ret;
1060 }
1061
1062 /**
1063 *******************************************************************************
1064 *
1065 * @brief
1066 * Parses VPS (Video Parameter Set)
1067 *
1068 * @par Description:
1069 * Parse Video Parameter Set as per Section 7.3.2.1
1070 * update vps structure corresponding to vps ID
1071 * Till parsing VPS id, the elements are stored in local variables and are copied
1072 * later
1073 *
1074 * @param[in] ps_codec
1075 * Pointer to codec context.
1076 *
1077 * @returns Error code from IHEVCD_ERROR_T
1078 *
1079 * @remarks
1080 *
1081 *
1082 *******************************************************************************
1083 */
ihevcd_parse_vps(codec_t * ps_codec)1084 IHEVCD_ERROR_T ihevcd_parse_vps(codec_t *ps_codec)
1085 {
1086 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
1087 WORD32 i;
1088 WORD32 value;
1089 WORD32 vps_id;
1090 vps_t *ps_vps;
1091 bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
1092 BITS_PARSE("vps_video_parameter_set_id", value, ps_bitstrm, 4);
1093 vps_id = value;
1094
1095 if(vps_id >= MAX_VPS_CNT)
1096 {
1097 ps_codec->s_parse.i4_error_code = IHEVCD_UNSUPPORTED_VPS_ID;
1098 return IHEVCD_UNSUPPORTED_VPS_ID;
1099 }
1100
1101
1102 ps_vps = (ps_codec->s_parse.ps_vps_base + vps_id);
1103
1104 ps_vps->i1_vps_id = vps_id;
1105
1106 BITS_PARSE("vps_reserved_three_2bits", value, ps_bitstrm, 2);
1107 ASSERT(value == 3);
1108
1109 BITS_PARSE("vps_max_layers_minus1", value, ps_bitstrm, 6);
1110 //ps_vps->i1_vps_max_layers = value + 1;
1111
1112
1113
1114 BITS_PARSE("vps_max_sub_layers_minus1", value, ps_bitstrm, 3);
1115 ps_vps->i1_vps_max_sub_layers = value + 1;
1116
1117 ASSERT(ps_vps->i1_vps_max_sub_layers < VPS_MAX_SUB_LAYERS);
1118
1119 BITS_PARSE("vps_temporal_id_nesting_flag", value, ps_bitstrm, 1);
1120 ps_vps->i1_vps_temporal_id_nesting_flag = value;
1121
1122 BITS_PARSE("vps_reserved_ffff_16bits", value, ps_bitstrm, 16);
1123 ASSERT(value == 0xFFFF);
1124 // profile_and_level( 1, vps_max_sub_layers_minus1 )
1125 ret = ihevcd_profile_tier_level(ps_bitstrm, &(ps_vps->s_ptl),
1126 1, (ps_vps->i1_vps_max_sub_layers - 1));
1127
1128 BITS_PARSE("vps_sub_layer_ordering_info_present_flag", value, ps_bitstrm, 1);
1129 ps_vps->i1_sub_layer_ordering_info_present_flag = value;
1130 i = (ps_vps->i1_sub_layer_ordering_info_present_flag ?
1131 0 : (ps_vps->i1_vps_max_sub_layers - 1));
1132 for(; i < ps_vps->i1_vps_max_sub_layers; i++)
1133 {
1134 UEV_PARSE("vps_max_dec_pic_buffering[i]", value, ps_bitstrm);
1135 ps_vps->ai1_vps_max_dec_pic_buffering[i] = value;
1136
1137 /* vps_num_reorder_pics (no max) used in print in order to match with HM */
1138 UEV_PARSE("vps_num_reorder_pics[i]", value, ps_bitstrm);
1139 ps_vps->ai1_vps_max_num_reorder_pics[i] = value;
1140
1141 UEV_PARSE("vps_max_latency_increase[i]", value, ps_bitstrm);
1142 ps_vps->ai1_vps_max_latency_increase[i] = value;
1143 }
1144
1145
1146
1147 BITS_PARSE("vps_max_layer_id", value, ps_bitstrm, 6);
1148 //ps_vps->i1_vps_max_layer_id = value;
1149
1150 UEV_PARSE("vps_num_layer_sets_minus1", value, ps_bitstrm);
1151 //ps_vps->i1_vps_num_layer_sets = value + 1;
1152
1153 BITS_PARSE("vps_timing_info_present_flag", value, ps_bitstrm, 1);
1154 //ps_vps->i1_vps_timing_info_present_flag = value;
1155
1156
1157
1158 return ret;
1159 }
1160
1161 /**
1162 *******************************************************************************
1163 *
1164 * @brief
1165 * Parses SPS (Sequence Parameter Set)
1166 * sequence_parameter_set_rbsp()
1167 *
1168 * @par Description:
1169 * Parse Sequence Parameter Set as per section Section: 7.3.2.2
1170 * The sps is written to a temporary buffer and copied later to the
1171 * appropriate location
1172 *
1173 * @param[in] ps_codec
1174 * Pointer to codec context
1175 *
1176 * @returns Error code from IHEVCD_ERROR_T
1177 *
1178 * @remarks
1179 *
1180 *
1181 *******************************************************************************
1182 */
ihevcd_parse_sps(codec_t * ps_codec)1183 IHEVCD_ERROR_T ihevcd_parse_sps(codec_t *ps_codec)
1184 {
1185 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
1186 WORD32 value;
1187
1188 WORD32 i;
1189 WORD32 vps_id;
1190 WORD32 sps_max_sub_layers;
1191 WORD32 sps_id;
1192 WORD32 sps_temporal_id_nesting_flag;
1193 sps_t *ps_sps;
1194 profile_tier_lvl_info_t s_ptl;
1195 bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
1196
1197
1198 BITS_PARSE("video_parameter_set_id", value, ps_bitstrm, 4);
1199 vps_id = value;
1200 vps_id = CLIP3(vps_id, 0, MAX_VPS_CNT - 1);
1201
1202 BITS_PARSE("sps_max_sub_layers_minus1", value, ps_bitstrm, 3);
1203 sps_max_sub_layers = value + 1;
1204 sps_max_sub_layers = CLIP3(sps_max_sub_layers, 1, 7);
1205
1206 BITS_PARSE("sps_temporal_id_nesting_flag", value, ps_bitstrm, 1);
1207 sps_temporal_id_nesting_flag = value;
1208
1209 //profile_and_level( 1, sps_max_sub_layers_minus1 )
1210 ret = ihevcd_profile_tier_level(ps_bitstrm, &(s_ptl), 1,
1211 (sps_max_sub_layers - 1));
1212
1213 UEV_PARSE("seq_parameter_set_id", value, ps_bitstrm);
1214 sps_id = value;
1215
1216 if((sps_id >= MAX_SPS_CNT) || (sps_id < 0))
1217 {
1218 if(ps_codec->i4_sps_done)
1219 return IHEVCD_UNSUPPORTED_SPS_ID;
1220 else
1221 sps_id = 0;
1222 }
1223
1224
1225 ps_sps = (ps_codec->s_parse.ps_sps_base + MAX_SPS_CNT - 1);
1226 ps_sps->i1_sps_id = sps_id;
1227 ps_sps->i1_vps_id = vps_id;
1228 ps_sps->i1_sps_max_sub_layers = sps_max_sub_layers;
1229 ps_sps->i1_sps_temporal_id_nesting_flag = sps_temporal_id_nesting_flag;
1230 /* This is used only during initialization to get reorder count etc */
1231 ps_codec->i4_sps_id = sps_id;
1232 memcpy(&ps_sps->s_ptl, &s_ptl, sizeof(profile_tier_lvl_info_t));
1233
1234 UEV_PARSE("chroma_format_idc", value, ps_bitstrm);
1235 ps_sps->i1_chroma_format_idc = value;
1236
1237 if(ps_sps->i1_chroma_format_idc != CHROMA_FMT_IDC_YUV420)
1238 {
1239 ps_codec->s_parse.i4_error_code = IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC;
1240 return (IHEVCD_ERROR_T)IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC;
1241 }
1242
1243 if(CHROMA_FMT_IDC_YUV444_PLANES == ps_sps->i1_chroma_format_idc)
1244 {
1245 BITS_PARSE("separate_colour_plane_flag", value, ps_bitstrm, 1);
1246 ps_sps->i1_separate_colour_plane_flag = value;
1247 }
1248 else
1249 {
1250 ps_sps->i1_separate_colour_plane_flag = 0;
1251 }
1252
1253 UEV_PARSE("pic_width_in_luma_samples", value, ps_bitstrm);
1254 ps_sps->i2_pic_width_in_luma_samples = value;
1255
1256 UEV_PARSE("pic_height_in_luma_samples", value, ps_bitstrm);
1257 ps_sps->i2_pic_height_in_luma_samples = value;
1258
1259 if((0 >= ps_sps->i2_pic_width_in_luma_samples) || (0 >= ps_sps->i2_pic_height_in_luma_samples))
1260 return IHEVCD_INVALID_PARAMETER;
1261
1262 /* i2_pic_width_in_luma_samples and i2_pic_height_in_luma_samples
1263 should be multiples of min_cb_size. Here these are aligned to 8,
1264 i.e. smallest CB size */
1265 ps_sps->i2_pic_width_in_luma_samples = ALIGN8(ps_sps->i2_pic_width_in_luma_samples);
1266 ps_sps->i2_pic_height_in_luma_samples = ALIGN8(ps_sps->i2_pic_height_in_luma_samples);
1267
1268 BITS_PARSE("pic_cropping_flag", value, ps_bitstrm, 1);
1269 ps_sps->i1_pic_cropping_flag = value;
1270
1271 if(ps_sps->i1_pic_cropping_flag)
1272 {
1273
1274 UEV_PARSE("pic_crop_left_offset", value, ps_bitstrm);
1275 ps_sps->i2_pic_crop_left_offset = value;
1276
1277 UEV_PARSE("pic_crop_right_offset", value, ps_bitstrm);
1278 ps_sps->i2_pic_crop_right_offset = value;
1279
1280 UEV_PARSE("pic_crop_top_offset", value, ps_bitstrm);
1281 ps_sps->i2_pic_crop_top_offset = value;
1282
1283 UEV_PARSE("pic_crop_bottom_offset", value, ps_bitstrm);
1284 ps_sps->i2_pic_crop_bottom_offset = value;
1285 }
1286 else
1287 {
1288 ps_sps->i2_pic_crop_left_offset = 0;
1289 ps_sps->i2_pic_crop_right_offset = 0;
1290 ps_sps->i2_pic_crop_top_offset = 0;
1291 ps_sps->i2_pic_crop_bottom_offset = 0;
1292 }
1293
1294
1295 UEV_PARSE("bit_depth_luma_minus8", value, ps_bitstrm);
1296 if(0 != value)
1297 return IHEVCD_UNSUPPORTED_BIT_DEPTH;
1298
1299 UEV_PARSE("bit_depth_chroma_minus8", value, ps_bitstrm);
1300 if(0 != value)
1301 return IHEVCD_UNSUPPORTED_BIT_DEPTH;
1302
1303 UEV_PARSE("log2_max_pic_order_cnt_lsb_minus4", value, ps_bitstrm);
1304 ps_sps->i1_log2_max_pic_order_cnt_lsb = value + 4;
1305
1306 BITS_PARSE("sps_sub_layer_ordering_info_present_flag", value, ps_bitstrm, 1);
1307 ps_sps->i1_sps_sub_layer_ordering_info_present_flag = value;
1308
1309
1310 i = (ps_sps->i1_sps_sub_layer_ordering_info_present_flag ? 0 : (ps_sps->i1_sps_max_sub_layers - 1));
1311 for(; i < ps_sps->i1_sps_max_sub_layers; i++)
1312 {
1313 UEV_PARSE("max_dec_pic_buffering", value, ps_bitstrm);
1314 ps_sps->ai1_sps_max_dec_pic_buffering[i] = value + 1;
1315
1316 UEV_PARSE("num_reorder_pics", value, ps_bitstrm);
1317 ps_sps->ai1_sps_max_num_reorder_pics[i] = value;
1318
1319 UEV_PARSE("max_latency_increase", value, ps_bitstrm);
1320 ps_sps->ai1_sps_max_latency_increase[i] = value;
1321 }
1322 UEV_PARSE("log2_min_coding_block_size_minus3", value, ps_bitstrm);
1323 ps_sps->i1_log2_min_coding_block_size = value + 3;
1324
1325 UEV_PARSE("log2_diff_max_min_coding_block_size", value, ps_bitstrm);
1326 ps_sps->i1_log2_diff_max_min_coding_block_size = value;
1327
1328 UEV_PARSE("log2_min_transform_block_size_minus2", value, ps_bitstrm);
1329 ps_sps->i1_log2_min_transform_block_size = value + 2;
1330
1331 UEV_PARSE("log2_diff_max_min_transform_block_size", value, ps_bitstrm);
1332 ps_sps->i1_log2_diff_max_min_transform_block_size = value;
1333
1334 ps_sps->i1_log2_max_transform_block_size = ps_sps->i1_log2_min_transform_block_size +
1335 ps_sps->i1_log2_diff_max_min_transform_block_size;
1336
1337 ps_sps->i1_log2_ctb_size = ps_sps->i1_log2_min_coding_block_size +
1338 ps_sps->i1_log2_diff_max_min_coding_block_size;
1339
1340 if((ps_sps->i1_log2_min_coding_block_size < 3) ||
1341 (ps_sps->i1_log2_min_transform_block_size < 2) ||
1342 (ps_sps->i1_log2_diff_max_min_transform_block_size < 0) ||
1343 (ps_sps->i1_log2_max_transform_block_size > ps_sps->i1_log2_ctb_size) ||
1344 (ps_sps->i1_log2_ctb_size < 4) ||
1345 (ps_sps->i1_log2_ctb_size > 6))
1346 {
1347 return IHEVCD_INVALID_PARAMETER;
1348 }
1349
1350 ps_sps->i1_log2_min_pcm_coding_block_size = 0;
1351 ps_sps->i1_log2_diff_max_min_pcm_coding_block_size = 0;
1352
1353 UEV_PARSE("max_transform_hierarchy_depth_inter", value, ps_bitstrm);
1354 ps_sps->i1_max_transform_hierarchy_depth_inter = value;
1355
1356 UEV_PARSE("max_transform_hierarchy_depth_intra", value, ps_bitstrm);
1357 ps_sps->i1_max_transform_hierarchy_depth_intra = value;
1358
1359 /* String has a d (enabled) in order to match with HM */
1360 BITS_PARSE("scaling_list_enabled_flag", value, ps_bitstrm, 1);
1361 ps_sps->i1_scaling_list_enable_flag = value;
1362
1363 if(ps_sps->i1_scaling_list_enable_flag)
1364 {
1365 COPY_DEFAULT_SCALING_LIST(ps_sps->pi2_scaling_mat);
1366 BITS_PARSE("sps_scaling_list_data_present_flag", value, ps_bitstrm, 1);
1367 ps_sps->i1_sps_scaling_list_data_present_flag = value;
1368
1369 if(ps_sps->i1_sps_scaling_list_data_present_flag)
1370 ihevcd_scaling_list_data(ps_codec, ps_sps->pi2_scaling_mat);
1371 }
1372 else
1373 {
1374 COPY_FLAT_SCALING_LIST(ps_sps->pi2_scaling_mat);
1375 }
1376 /* String is asymmetric_motion_partitions_enabled_flag instead of amp_enabled_flag in order to match with HM */
1377 BITS_PARSE("asymmetric_motion_partitions_enabled_flag", value, ps_bitstrm, 1);
1378 ps_sps->i1_amp_enabled_flag = value;
1379
1380 BITS_PARSE("sample_adaptive_offset_enabled_flag", value, ps_bitstrm, 1);
1381 ps_sps->i1_sample_adaptive_offset_enabled_flag = value;
1382
1383 BITS_PARSE("pcm_enabled_flag", value, ps_bitstrm, 1);
1384 ps_sps->i1_pcm_enabled_flag = value;
1385
1386 if(ps_sps->i1_pcm_enabled_flag)
1387 {
1388 BITS_PARSE("pcm_sample_bit_depth_luma", value, ps_bitstrm, 4);
1389 ps_sps->i1_pcm_sample_bit_depth_luma = value + 1;
1390
1391 BITS_PARSE("pcm_sample_bit_depth_chroma", value, ps_bitstrm, 4);
1392 ps_sps->i1_pcm_sample_bit_depth_chroma = value + 1;
1393
1394 UEV_PARSE("log2_min_pcm_coding_block_size_minus3", value, ps_bitstrm);
1395 ps_sps->i1_log2_min_pcm_coding_block_size = value + 3;
1396
1397 UEV_PARSE("log2_diff_max_min_pcm_coding_block_size", value, ps_bitstrm);
1398 ps_sps->i1_log2_diff_max_min_pcm_coding_block_size = value;
1399 BITS_PARSE("pcm_loop_filter_disable_flag", value, ps_bitstrm, 1);
1400 ps_sps->i1_pcm_loop_filter_disable_flag = value;
1401
1402 }
1403 UEV_PARSE("num_short_term_ref_pic_sets", value, ps_bitstrm);
1404 ps_sps->i1_num_short_term_ref_pic_sets = value;
1405
1406 ps_sps->i1_num_short_term_ref_pic_sets = CLIP3(ps_sps->i1_num_short_term_ref_pic_sets, 0, MAX_STREF_PICS_SPS);
1407
1408 for(i = 0; i < ps_sps->i1_num_short_term_ref_pic_sets; i++)
1409 ihevcd_short_term_ref_pic_set(ps_bitstrm, &ps_sps->as_stref_picset[0], ps_sps->i1_num_short_term_ref_pic_sets, i, &ps_sps->as_stref_picset[i]);
1410
1411 BITS_PARSE("long_term_ref_pics_present_flag", value, ps_bitstrm, 1);
1412 ps_sps->i1_long_term_ref_pics_present_flag = value;
1413
1414 if(ps_sps->i1_long_term_ref_pics_present_flag)
1415 {
1416 UEV_PARSE("num_long_term_ref_pics_sps", value, ps_bitstrm);
1417 ps_sps->i1_num_long_term_ref_pics_sps = value;
1418
1419 for(i = 0; i < ps_sps->i1_num_long_term_ref_pics_sps; i++)
1420 {
1421 BITS_PARSE("lt_ref_pic_poc_lsb_sps[ i ]", value, ps_bitstrm, ps_sps->i1_log2_max_pic_order_cnt_lsb);
1422 ps_sps->ai1_lt_ref_pic_poc_lsb_sps[i] = value;
1423
1424 BITS_PARSE("used_by_curr_pic_lt_sps_flag[ i ]", value, ps_bitstrm, 1);
1425 ps_sps->ai1_used_by_curr_pic_lt_sps_flag[i] = value;
1426 }
1427 }
1428
1429 BITS_PARSE("sps_temporal_mvp_enable_flag", value, ps_bitstrm, 1);
1430 ps_sps->i1_sps_temporal_mvp_enable_flag = value;
1431
1432 /* Print matches HM 8-2 */
1433 BITS_PARSE("sps_strong_intra_smoothing_enable_flag", value, ps_bitstrm, 1);
1434 ps_sps->i1_strong_intra_smoothing_enable_flag = value;
1435
1436 BITS_PARSE("vui_parameters_present_flag", value, ps_bitstrm, 1);
1437 ps_sps->i1_vui_parameters_present_flag = value;
1438
1439 if(ps_sps->i1_vui_parameters_present_flag)
1440 ihevcd_parse_vui_parameters(ps_bitstrm,
1441 &ps_sps->s_vui_parameters,
1442 ps_sps->i1_sps_max_sub_layers - 1);
1443
1444 BITS_PARSE("sps_extension_flag", value, ps_bitstrm, 1);
1445
1446
1447 {
1448 WORD32 numerator;
1449 WORD32 ceil_offset;
1450
1451 ceil_offset = (1 << ps_sps->i1_log2_ctb_size) - 1;
1452 numerator = ps_sps->i2_pic_width_in_luma_samples;
1453
1454 ps_sps->i2_pic_wd_in_ctb = ((numerator + ceil_offset) /
1455 (1 << ps_sps->i1_log2_ctb_size));
1456
1457 numerator = ps_sps->i2_pic_height_in_luma_samples;
1458 ps_sps->i2_pic_ht_in_ctb = ((numerator + ceil_offset) /
1459 (1 << ps_sps->i1_log2_ctb_size));
1460
1461 ps_sps->i4_pic_size_in_ctb = ps_sps->i2_pic_ht_in_ctb *
1462 ps_sps->i2_pic_wd_in_ctb;
1463
1464 if(0 == ps_codec->i4_sps_done)
1465 ps_codec->s_parse.i4_next_ctb_indx = ps_sps->i4_pic_size_in_ctb;
1466
1467 numerator = ps_sps->i2_pic_width_in_luma_samples;
1468 ps_sps->i2_pic_wd_in_min_cb = numerator /
1469 (1 << ps_sps->i1_log2_min_coding_block_size);
1470
1471 numerator = ps_sps->i2_pic_height_in_luma_samples;
1472 ps_sps->i2_pic_ht_in_min_cb = numerator /
1473 (1 << ps_sps->i1_log2_min_coding_block_size);
1474 }
1475 if((0 != ps_codec->i4_first_pic_done) &&
1476 ((ps_codec->i4_wd != ps_sps->i2_pic_width_in_luma_samples) ||
1477 (ps_codec->i4_ht != ps_sps->i2_pic_height_in_luma_samples)))
1478 {
1479 ps_codec->i4_reset_flag = 1;
1480 return (IHEVCD_ERROR_T)IVD_RES_CHANGED;
1481 }
1482
1483 /* Update display width and display height */
1484 {
1485 WORD32 disp_wd, disp_ht;
1486 WORD32 crop_unit_x, crop_unit_y;
1487 crop_unit_x = 1;
1488 crop_unit_y = 1;
1489
1490 if(CHROMA_FMT_IDC_YUV420 == ps_sps->i1_chroma_format_idc)
1491 {
1492 crop_unit_x = 2;
1493 crop_unit_y = 2;
1494 }
1495
1496 disp_wd = ps_sps->i2_pic_width_in_luma_samples;
1497 disp_wd -= ps_sps->i2_pic_crop_left_offset * crop_unit_x;
1498 disp_wd -= ps_sps->i2_pic_crop_right_offset * crop_unit_x;
1499
1500
1501 disp_ht = ps_sps->i2_pic_height_in_luma_samples;
1502 disp_ht -= ps_sps->i2_pic_crop_top_offset * crop_unit_y;
1503 disp_ht -= ps_sps->i2_pic_crop_bottom_offset * crop_unit_y;
1504
1505 if((0 >= disp_wd) || (0 >= disp_ht))
1506 return IHEVCD_INVALID_PARAMETER;
1507
1508 ps_codec->i4_disp_wd = disp_wd;
1509 ps_codec->i4_disp_ht = disp_ht;
1510
1511
1512 ps_codec->i4_wd = ps_sps->i2_pic_width_in_luma_samples;
1513 ps_codec->i4_ht = ps_sps->i2_pic_height_in_luma_samples;
1514
1515 {
1516 WORD32 ref_strd;
1517 ref_strd = ALIGN32(ps_sps->i2_pic_width_in_luma_samples + PAD_WD);
1518 if(ps_codec->i4_strd < ref_strd)
1519 {
1520 ps_codec->i4_strd = ref_strd;
1521 }
1522 }
1523
1524 if(0 == ps_codec->i4_share_disp_buf)
1525 {
1526 if(ps_codec->i4_disp_strd < ps_codec->i4_disp_wd)
1527 {
1528 ps_codec->i4_disp_strd = ps_codec->i4_disp_wd;
1529 }
1530 }
1531 else
1532 {
1533 if(ps_codec->i4_disp_strd < ps_codec->i4_strd)
1534 {
1535 ps_codec->i4_disp_strd = ps_codec->i4_strd;
1536 }
1537 }
1538 }
1539
1540 ps_codec->i4_sps_done = 1;
1541 return ret;
1542 }
1543
1544
ihevcd_unmark_pps(codec_t * ps_codec,WORD32 sps_id)1545 void ihevcd_unmark_pps(codec_t *ps_codec, WORD32 sps_id)
1546 {
1547 WORD32 pps_id = 0;
1548 pps_t *ps_pps = ps_codec->ps_pps_base;
1549
1550 for(pps_id = 0; pps_id < MAX_PPS_CNT - 1; pps_id++, ps_pps++)
1551 {
1552 if((ps_pps->i1_pps_valid) &&
1553 (ps_pps->i1_sps_id == sps_id))
1554 ps_pps->i1_pps_valid = 0;
1555 }
1556 }
1557
1558
ihevcd_copy_sps(codec_t * ps_codec,WORD32 sps_id,WORD32 sps_id_ref)1559 void ihevcd_copy_sps(codec_t *ps_codec, WORD32 sps_id, WORD32 sps_id_ref)
1560 {
1561 sps_t *ps_sps, *ps_sps_ref;
1562 WORD16 *pi2_scaling_mat_backup;
1563 WORD32 scaling_mat_size;
1564
1565 SCALING_MAT_SIZE(scaling_mat_size);
1566 ps_sps_ref = ps_codec->ps_sps_base + sps_id_ref;
1567 ps_sps = ps_codec->ps_sps_base + sps_id;
1568
1569 if(ps_sps->i1_sps_valid)
1570 {
1571 if((ps_sps->i1_log2_ctb_size != ps_sps_ref->i1_log2_ctb_size) ||
1572 (ps_sps->i2_pic_wd_in_ctb != ps_sps_ref->i2_pic_wd_in_ctb) ||
1573 (ps_sps->i2_pic_ht_in_ctb != ps_sps_ref->i2_pic_ht_in_ctb))
1574 {
1575 ihevcd_unmark_pps(ps_codec, sps_id);
1576 }
1577 }
1578
1579 pi2_scaling_mat_backup = ps_sps->pi2_scaling_mat;
1580
1581 memcpy(ps_sps, ps_sps_ref, sizeof(sps_t));
1582 ps_sps->pi2_scaling_mat = pi2_scaling_mat_backup;
1583 memcpy(ps_sps->pi2_scaling_mat, ps_sps_ref->pi2_scaling_mat, scaling_mat_size * sizeof(WORD16));
1584 ps_sps->i1_sps_valid = 1;
1585
1586 ps_codec->s_parse.ps_sps = ps_sps;
1587 }
1588
1589
1590 /**
1591 *******************************************************************************
1592 *
1593 * @brief
1594 * Parses PPS (Picture Parameter Set)
1595 *
1596 * @par Description:
1597 * Parse Picture Parameter Set as per section Section: 7.3.2.3
1598 * The pps is written to a temporary buffer and copied later to the
1599 * appropriate location
1600 *
1601 * @param[in] ps_codec
1602 * Pointer to codec context
1603 *
1604 * @returns Error code from IHEVCD_ERROR_T
1605 *
1606 * @remarks
1607 *
1608 *
1609 *******************************************************************************
1610 */
ihevcd_parse_pps(codec_t * ps_codec)1611 IHEVCD_ERROR_T ihevcd_parse_pps(codec_t *ps_codec)
1612 {
1613 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
1614 WORD32 value;
1615 WORD32 pps_id;
1616
1617 pps_t *ps_pps;
1618 sps_t *ps_sps;
1619 bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
1620
1621
1622 if(0 == ps_codec->i4_sps_done)
1623 return IHEVCD_INVALID_HEADER;
1624
1625 UEV_PARSE("pic_parameter_set_id", value, ps_bitstrm);
1626
1627 pps_id = value;
1628 if((pps_id >= MAX_PPS_CNT) || (pps_id < 0))
1629 {
1630 if(ps_codec->i4_pps_done)
1631 return IHEVCD_UNSUPPORTED_PPS_ID;
1632 else
1633 pps_id = 0;
1634 }
1635
1636
1637 ps_pps = (ps_codec->s_parse.ps_pps_base + MAX_PPS_CNT - 1);
1638
1639 ps_pps->i1_pps_id = pps_id;
1640
1641 UEV_PARSE("seq_parameter_set_id", value, ps_bitstrm);
1642 ps_pps->i1_sps_id = value;
1643 ps_pps->i1_sps_id = CLIP3(ps_pps->i1_sps_id, 0, MAX_SPS_CNT - 2);
1644
1645 ps_sps = (ps_codec->s_parse.ps_sps_base + ps_pps->i1_sps_id);
1646
1647 /* If the SPS that is being referred to has not been parsed,
1648 * copy an existing SPS to the current location */
1649 if(0 == ps_sps->i1_sps_valid)
1650 {
1651 return IHEVCD_INVALID_HEADER;
1652
1653 /*
1654 sps_t *ps_sps_ref = ps_codec->ps_sps_base;
1655 while(0 == ps_sps_ref->i1_sps_valid)
1656 ps_sps_ref++;
1657 ihevcd_copy_sps(ps_codec, ps_pps->i1_sps_id, ps_sps_ref->i1_sps_id);
1658 */
1659 }
1660
1661 BITS_PARSE("dependent_slices_enabled_flag", value, ps_bitstrm, 1);
1662 ps_pps->i1_dependent_slice_enabled_flag = value;
1663
1664 BITS_PARSE("output_flag_present_flag", value, ps_bitstrm, 1);
1665 ps_pps->i1_output_flag_present_flag = value;
1666
1667 BITS_PARSE("num_extra_slice_header_bits", value, ps_bitstrm, 3);
1668 ps_pps->i1_num_extra_slice_header_bits = value;
1669
1670
1671 BITS_PARSE("sign_data_hiding_flag", value, ps_bitstrm, 1);
1672 ps_pps->i1_sign_data_hiding_flag = value;
1673
1674 BITS_PARSE("cabac_init_present_flag", value, ps_bitstrm, 1);
1675 ps_pps->i1_cabac_init_present_flag = value;
1676
1677 UEV_PARSE("num_ref_idx_l0_default_active_minus1", value, ps_bitstrm);
1678 ps_pps->i1_num_ref_idx_l0_default_active = value + 1;
1679
1680 UEV_PARSE("num_ref_idx_l1_default_active_minus1", value, ps_bitstrm);
1681 ps_pps->i1_num_ref_idx_l1_default_active = value + 1;
1682
1683 SEV_PARSE("pic_init_qp_minus26", value, ps_bitstrm);
1684 ps_pps->i1_pic_init_qp = value + 26;
1685
1686 BITS_PARSE("constrained_intra_pred_flag", value, ps_bitstrm, 1);
1687 ps_pps->i1_constrained_intra_pred_flag = value;
1688
1689 BITS_PARSE("transform_skip_enabled_flag", value, ps_bitstrm, 1);
1690 ps_pps->i1_transform_skip_enabled_flag = value;
1691
1692 BITS_PARSE("cu_qp_delta_enabled_flag", value, ps_bitstrm, 1);
1693 ps_pps->i1_cu_qp_delta_enabled_flag = value;
1694
1695 if(ps_pps->i1_cu_qp_delta_enabled_flag)
1696 {
1697 UEV_PARSE("diff_cu_qp_delta_depth", value, ps_bitstrm);
1698 ps_pps->i1_diff_cu_qp_delta_depth = value;
1699 }
1700 else
1701 {
1702 ps_pps->i1_diff_cu_qp_delta_depth = 0;
1703 }
1704 ps_pps->i1_log2_min_cu_qp_delta_size = ps_sps->i1_log2_ctb_size - ps_pps->i1_diff_cu_qp_delta_depth;
1705 /* Print different */
1706 SEV_PARSE("cb_qp_offset", value, ps_bitstrm);
1707 ps_pps->i1_pic_cb_qp_offset = value;
1708
1709 /* Print different */
1710 SEV_PARSE("cr_qp_offset", value, ps_bitstrm);
1711 ps_pps->i1_pic_cr_qp_offset = value;
1712
1713 /* Print different */
1714 BITS_PARSE("slicelevel_chroma_qp_flag", value, ps_bitstrm, 1);
1715 ps_pps->i1_pic_slice_level_chroma_qp_offsets_present_flag = value;
1716
1717 BITS_PARSE("weighted_pred_flag", value, ps_bitstrm, 1);
1718 ps_pps->i1_weighted_pred_flag = value;
1719
1720 BITS_PARSE("weighted_bipred_flag", value, ps_bitstrm, 1);
1721 ps_pps->i1_weighted_bipred_flag = value;
1722
1723 BITS_PARSE("transquant_bypass_enable_flag", value, ps_bitstrm, 1);
1724 ps_pps->i1_transquant_bypass_enable_flag = value;
1725
1726 BITS_PARSE("tiles_enabled_flag", value, ps_bitstrm, 1);
1727 ps_pps->i1_tiles_enabled_flag = value;
1728
1729 BITS_PARSE("entropy_coding_sync_enabled_flag", value, ps_bitstrm, 1);
1730 ps_pps->i1_entropy_coding_sync_enabled_flag = value;
1731
1732 ps_pps->i1_loop_filter_across_tiles_enabled_flag = 0;
1733 if(ps_pps->i1_tiles_enabled_flag)
1734 {
1735 UEV_PARSE("num_tile_columns_minus1", value, ps_bitstrm);
1736 ps_pps->i1_num_tile_columns = value + 1;
1737
1738 UEV_PARSE("num_tile_rows_minus1", value, ps_bitstrm);
1739 ps_pps->i1_num_tile_rows = value + 1;
1740
1741 if((ps_pps->i1_num_tile_columns < 1) ||
1742 (ps_pps->i1_num_tile_columns > ps_sps->i2_pic_wd_in_ctb) ||
1743 (ps_pps->i1_num_tile_rows < 1) ||
1744 (ps_pps->i1_num_tile_rows > ps_sps->i2_pic_ht_in_ctb))
1745 return IHEVCD_INVALID_HEADER;
1746
1747 BITS_PARSE("uniform_spacing_flag", value, ps_bitstrm, 1);
1748 ps_pps->i1_uniform_spacing_flag = value;
1749
1750
1751 {
1752
1753 WORD32 start;
1754 WORD32 i, j;
1755
1756
1757 start = 0;
1758 for(i = 0; i < ps_pps->i1_num_tile_columns; i++)
1759 {
1760 tile_t *ps_tile;
1761 if(!ps_pps->i1_uniform_spacing_flag)
1762 {
1763 if(i < (ps_pps->i1_num_tile_columns - 1))
1764 {
1765 UEV_PARSE("column_width_minus1[ i ]", value, ps_bitstrm);
1766 value += 1;
1767 }
1768 else
1769 {
1770 value = ps_sps->i2_pic_wd_in_ctb - start;
1771 }
1772 }
1773 else
1774 {
1775 value = ((i + 1) * ps_sps->i2_pic_wd_in_ctb) / ps_pps->i1_num_tile_columns -
1776 (i * ps_sps->i2_pic_wd_in_ctb) / ps_pps->i1_num_tile_columns;
1777 }
1778
1779 for(j = 0; j < ps_pps->i1_num_tile_rows; j++)
1780 {
1781 ps_tile = ps_pps->ps_tile + j * ps_pps->i1_num_tile_columns + i;
1782 ps_tile->u1_pos_x = start;
1783 ps_tile->u2_wd = value;
1784 }
1785 start += value;
1786
1787 if((start > ps_sps->i2_pic_wd_in_ctb) ||
1788 (value <= 0))
1789 return IHEVCD_INVALID_HEADER;
1790 }
1791
1792 start = 0;
1793 for(i = 0; i < (ps_pps->i1_num_tile_rows); i++)
1794 {
1795 tile_t *ps_tile;
1796 if(!ps_pps->i1_uniform_spacing_flag)
1797 {
1798 if(i < (ps_pps->i1_num_tile_rows - 1))
1799 {
1800
1801 UEV_PARSE("row_height_minus1[ i ]", value, ps_bitstrm);
1802 value += 1;
1803 }
1804 else
1805 {
1806 value = ps_sps->i2_pic_ht_in_ctb - start;
1807 }
1808 }
1809 else
1810 {
1811 value = ((i + 1) * ps_sps->i2_pic_ht_in_ctb) / ps_pps->i1_num_tile_rows -
1812 (i * ps_sps->i2_pic_ht_in_ctb) / ps_pps->i1_num_tile_rows;
1813 }
1814
1815 for(j = 0; j < ps_pps->i1_num_tile_columns; j++)
1816 {
1817 ps_tile = ps_pps->ps_tile + i * ps_pps->i1_num_tile_columns + j;
1818 ps_tile->u1_pos_y = start;
1819 ps_tile->u2_ht = value;
1820 }
1821 start += value;
1822
1823 if((start > ps_sps->i2_pic_ht_in_ctb) ||
1824 (value <= 0))
1825 return IHEVCD_INVALID_HEADER;
1826 }
1827 }
1828
1829
1830 BITS_PARSE("loop_filter_across_tiles_enabled_flag", value, ps_bitstrm, 1);
1831 ps_pps->i1_loop_filter_across_tiles_enabled_flag = value;
1832
1833 }
1834 else
1835 {
1836 /* If tiles are not present, set first tile in each PPS to have tile
1837 width and height equal to picture width and height */
1838 ps_pps->i1_num_tile_columns = 1;
1839 ps_pps->i1_num_tile_rows = 1;
1840 ps_pps->i1_uniform_spacing_flag = 1;
1841
1842 ps_pps->ps_tile->u1_pos_x = 0;
1843 ps_pps->ps_tile->u1_pos_y = 0;
1844 ps_pps->ps_tile->u2_wd = ps_sps->i2_pic_wd_in_ctb;
1845 ps_pps->ps_tile->u2_ht = ps_sps->i2_pic_ht_in_ctb;
1846 }
1847
1848 BITS_PARSE("loop_filter_across_slices_enabled_flag", value, ps_bitstrm, 1);
1849 ps_pps->i1_loop_filter_across_slices_enabled_flag = value;
1850
1851 BITS_PARSE("deblocking_filter_control_present_flag", value, ps_bitstrm, 1);
1852 ps_pps->i1_deblocking_filter_control_present_flag = value;
1853
1854 /* Default values */
1855 ps_pps->i1_pic_disable_deblocking_filter_flag = 0;
1856 ps_pps->i1_deblocking_filter_override_enabled_flag = 0;
1857 ps_pps->i1_beta_offset_div2 = 0;
1858 ps_pps->i1_tc_offset_div2 = 0;
1859
1860 if(ps_pps->i1_deblocking_filter_control_present_flag)
1861 {
1862
1863 BITS_PARSE("deblocking_filter_override_enabled_flag", value, ps_bitstrm, 1);
1864 ps_pps->i1_deblocking_filter_override_enabled_flag = value;
1865
1866 BITS_PARSE("pic_disable_deblocking_filter_flag", value, ps_bitstrm, 1);
1867 ps_pps->i1_pic_disable_deblocking_filter_flag = value;
1868
1869 if(!ps_pps->i1_pic_disable_deblocking_filter_flag)
1870 {
1871
1872 SEV_PARSE("pps_beta_offset_div2", value, ps_bitstrm);
1873 ps_pps->i1_beta_offset_div2 = value;
1874
1875 SEV_PARSE("pps_tc_offset_div2", value, ps_bitstrm);
1876 ps_pps->i1_tc_offset_div2 = value;
1877
1878 }
1879 }
1880
1881 BITS_PARSE("pps_scaling_list_data_present_flag", value, ps_bitstrm, 1);
1882 ps_pps->i1_pps_scaling_list_data_present_flag = value;
1883
1884 if(ps_pps->i1_pps_scaling_list_data_present_flag)
1885 {
1886 COPY_DEFAULT_SCALING_LIST(ps_pps->pi2_scaling_mat);
1887 ihevcd_scaling_list_data(ps_codec, ps_pps->pi2_scaling_mat);
1888 }
1889
1890 BITS_PARSE("lists_modification_present_flag", value, ps_bitstrm, 1);
1891 ps_pps->i1_lists_modification_present_flag = value;
1892 UEV_PARSE("log2_parallel_merge_level_minus2", value, ps_bitstrm);
1893 ps_pps->i1_log2_parallel_merge_level = value + 2;
1894
1895 BITS_PARSE("slice_header_extension_present_flag", value, ps_bitstrm, 1);
1896 ps_pps->i1_slice_header_extension_present_flag = value;
1897 /* Not present in HM */
1898 BITS_PARSE("pps_extension_flag", value, ps_bitstrm, 1);
1899
1900 ps_codec->i4_pps_done = 1;
1901 return ret;
1902 }
1903
1904
ihevcd_copy_pps(codec_t * ps_codec,WORD32 pps_id,WORD32 pps_id_ref)1905 void ihevcd_copy_pps(codec_t *ps_codec, WORD32 pps_id, WORD32 pps_id_ref)
1906 {
1907 pps_t *ps_pps, *ps_pps_ref;
1908 WORD16 *pi2_scaling_mat_backup;
1909 WORD32 scaling_mat_size;
1910 tile_t *ps_tile_backup;
1911 WORD32 max_tile_cols, max_tile_rows;
1912 WORD32 wd, ht;
1913 wd = ALIGN64(ps_codec->i4_wd);
1914 ht = ALIGN64(ps_codec->i4_ht);
1915
1916 SCALING_MAT_SIZE(scaling_mat_size);
1917 max_tile_cols = (wd + MIN_TILE_WD - 1) / MIN_TILE_WD;
1918 max_tile_rows = (ht + MIN_TILE_HT - 1) / MIN_TILE_HT;
1919
1920 ps_pps_ref = ps_codec->ps_pps_base + pps_id_ref;
1921 ps_pps = ps_codec->ps_pps_base + pps_id;
1922
1923 pi2_scaling_mat_backup = ps_pps->pi2_scaling_mat;
1924 ps_tile_backup = ps_pps->ps_tile;
1925
1926 memcpy(ps_pps, ps_pps_ref, sizeof(pps_t));
1927 ps_pps->pi2_scaling_mat = pi2_scaling_mat_backup;
1928 ps_pps->ps_tile = ps_tile_backup;
1929 memcpy(ps_pps->pi2_scaling_mat, ps_pps_ref->pi2_scaling_mat, scaling_mat_size * sizeof(WORD16));
1930 memcpy(ps_pps->ps_tile, ps_pps_ref->ps_tile, max_tile_cols * max_tile_rows * sizeof(tile_t));
1931
1932 ps_pps->i1_pps_valid = 1;
1933
1934 ps_codec->s_parse.ps_pps = ps_pps;
1935 }
1936
1937
1938
1939 /**
1940 *******************************************************************************
1941 *
1942 * @brief
1943 * Parses SEI (Supplemental Enhancement Information)
1944 *
1945 * @par Description:
1946 * Parses SEI (Supplemental Enhancement Information) as per Section: 7.3.7
1947 *
1948 * @param[in] ps_codec
1949 * Pointer to codec context
1950 *
1951 * @returns Error code from IHEVCD_ERROR_T
1952 *
1953 * @remarks
1954 *
1955 *
1956 *******************************************************************************
1957 */
ihevcd_parse_sei(codec_t * ps_codec)1958 IHEVCD_ERROR_T ihevcd_parse_sei(codec_t *ps_codec)
1959 {
1960 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
1961 UNUSED(ps_codec);
1962 return ret;
1963 }
1964
1965 /**
1966 *******************************************************************************
1967 *
1968 * @brief
1969 * Parses Access unit delimiter
1970 *
1971 * @par Description:
1972 * Parses Access unit delimiter as per section Section: 7.3.2.5
1973 *
1974 * @param[in] ps_codec
1975 * Pointer to codec context
1976 *
1977 * @returns Error code from IHEVCD_ERROR_T
1978 *
1979 * @remarks
1980 *
1981 *
1982 *******************************************************************************
1983 */
ihevcd_parse_aud(codec_t * ps_codec)1984 WORD32 ihevcd_parse_aud(codec_t *ps_codec)
1985 {
1986 IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
1987 UNUSED(ps_codec);
1988 return ret;
1989 }
1990
ihevcd_extend_sign_bit(WORD32 value,WORD32 num_bits)1991 WORD32 ihevcd_extend_sign_bit(WORD32 value, WORD32 num_bits)
1992 {
1993 WORD32 ret_value = value;
1994 if(value >> (num_bits - 1))
1995 {
1996 ret_value |= (0xFFFFFFFF << num_bits);
1997 }
1998 return ret_value;
1999 }
2000
2001 /**
2002 *******************************************************************************
2003 *
2004 * @brief
2005 * Calculate POC of the current slice
2006 *
2007 * @par Description:
2008 * Calculates the current POC using the previous POC lsb and previous POC msb
2009 *
2010 * @param[in] ps_codec
2011 * Pointer to codec context
2012 *
2013 * @param[in] i1_pic_order_cnt_lsb
2014 * Current POC lsb
2015 *
2016 * @returns Current absolute POC
2017 *
2018 * @remarks
2019 *
2020 *
2021 *******************************************************************************
2022 */
2023
ihevcd_calc_poc(codec_t * ps_codec,nal_header_t * ps_nal,WORD8 i1_log2_max_poc_lsb,WORD32 i2_poc_lsb)2024 WORD32 ihevcd_calc_poc(codec_t *ps_codec, nal_header_t *ps_nal, WORD8 i1_log2_max_poc_lsb, WORD32 i2_poc_lsb)
2025 {
2026 WORD32 i4_abs_poc, i4_poc_msb;
2027 WORD32 max_poc_lsb;
2028 WORD8 i1_nal_unit_type = ps_nal->i1_nal_unit_type;
2029 max_poc_lsb = (1 << i1_log2_max_poc_lsb);
2030
2031 if((!ps_codec->i4_first_pic_done) && (!ps_codec->i4_pic_present))
2032 ps_codec->i4_prev_poc_msb = -2 * max_poc_lsb;
2033
2034 if(NAL_IDR_N_LP == i1_nal_unit_type
2035 || NAL_IDR_W_LP == i1_nal_unit_type
2036 || NAL_BLA_N_LP == i1_nal_unit_type
2037 || NAL_BLA_W_DLP == i1_nal_unit_type
2038 || NAL_BLA_W_LP == i1_nal_unit_type
2039 || (NAL_CRA == i1_nal_unit_type && !ps_codec->i4_first_pic_done))
2040 {
2041 i4_poc_msb = ps_codec->i4_prev_poc_msb + 2 * max_poc_lsb;
2042 ps_codec->i4_prev_poc_lsb = 0;
2043 ps_codec->i4_max_prev_poc_lsb = 0;
2044 // ps_codec->i4_prev_poc_msb = 0;
2045 }
2046 else
2047 {
2048
2049 if((i2_poc_lsb < ps_codec->i4_prev_poc_lsb)
2050 && ((ps_codec->i4_prev_poc_lsb - i2_poc_lsb) >= max_poc_lsb / 2))
2051 {
2052 i4_poc_msb = ps_codec->i4_prev_poc_msb + max_poc_lsb;
2053 }
2054 else if((i2_poc_lsb > ps_codec->i4_prev_poc_lsb)
2055 && ((i2_poc_lsb - ps_codec->i4_prev_poc_lsb) > max_poc_lsb / 2))
2056 {
2057 i4_poc_msb = ps_codec->i4_prev_poc_msb - max_poc_lsb;
2058 }
2059 else
2060 {
2061 i4_poc_msb = ps_codec->i4_prev_poc_msb;
2062 }
2063
2064
2065 }
2066
2067 i4_abs_poc = i4_poc_msb + i2_poc_lsb;
2068 ps_codec->i4_max_prev_poc_lsb = MAX(ps_codec->i4_max_prev_poc_lsb, i2_poc_lsb);
2069
2070 {
2071 WORD32 is_reference_nal = ((i1_nal_unit_type <= NAL_RSV_VCL_R15) && (i1_nal_unit_type % 2 != 0)) || ((i1_nal_unit_type >= NAL_BLA_W_LP) && (i1_nal_unit_type <= NAL_RSV_RAP_VCL23));
2072 WORD32 update_prev_poc = ((is_reference_nal) && ((i1_nal_unit_type < NAL_RADL_N) || (i1_nal_unit_type > NAL_RASL_R)));
2073
2074 if((0 == ps_nal->i1_nuh_temporal_id) &&
2075 (update_prev_poc))
2076 {
2077 ps_codec->i4_prev_poc_lsb = i2_poc_lsb;
2078 ps_codec->i4_prev_poc_msb = i4_poc_msb;
2079 }
2080 }
2081
2082 return i4_abs_poc;
2083 }
2084
2085
ihevcd_copy_slice_hdr(codec_t * ps_codec,WORD32 slice_idx,WORD32 slice_idx_ref)2086 void ihevcd_copy_slice_hdr(codec_t *ps_codec, WORD32 slice_idx, WORD32 slice_idx_ref)
2087 {
2088 slice_header_t *ps_slice_hdr, *ps_slice_hdr_ref;
2089 WORD32 *pu4_entry_offset_backup;
2090
2091 ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr_base + slice_idx;
2092 ps_slice_hdr_ref = ps_codec->s_parse.ps_slice_hdr_base + slice_idx_ref;
2093
2094 pu4_entry_offset_backup = ps_slice_hdr->pu4_entry_point_offset;
2095 memcpy(ps_slice_hdr, ps_slice_hdr_ref, sizeof(slice_header_t));
2096 ps_slice_hdr->pu4_entry_point_offset = pu4_entry_offset_backup;
2097 }
2098
2099
2100
2101