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gerrit-public.fairphone.software / platform / external / libavc / 8454dbfccd4b558e880596f313d269a9083da86b / . / decoder / ih264d_parse_headers.c
blob: 58234f99c47c3bdab0b7300b4d88a2b35e5e8e4c [file] [log] [blame]
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1/******************************************************************************
2 *
3 * Copyright (C) 2015 The Android Open Source Project
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 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19*/
20/*!
21 **************************************************************************
22 * \file ih264d_parse_headers.c
23 *
24 * \brief
25 * Contains High level syntax[above slice] parsing routines
26 *
27 * \date
28 * 19/12/2002
29 *
30 * \author AI
31 **************************************************************************
32 */
33#include "ih264_typedefs.h"
34#include "ih264_macros.h"
35#include "ih264_platform_macros.h"
36#include "ih264d_bitstrm.h"
37#include "ih264d_structs.h"
38#include "ih264d_parse_cavlc.h"
39#include "ih264d_defs.h"
40#include "ih264d_defs.h"
41#include "ih264d_defs.h"
42#include "ih264d_parse_slice.h"
43#include "ih264d_tables.h"
44#include "ih264d_utils.h"
45#include "ih264d_nal.h"
46#include "ih264d_deblocking.h"
47
48#include "ih264d_mem_request.h"
49#include "ih264d_debug.h"
50#include "ih264d_error_handler.h"
51#include "ih264d_mb_utils.h"
52#include "ih264d_sei.h"
53#include "ih264d_vui.h"
54#include "ih264d_thread_parse_decode.h"
55#include "ih264d_thread_compute_bs.h"
56#include "ih264d_quant_scaling.h"
57#include "ih264d_defs.h"
58#include "ivd.h"
Marco Nelissen8ef4c3f2015-06-03 07:26:32 -0700[diff] [blame]59#include "ih264d.h"
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]60
61/*****************************************************************************/
62/* */
63/* Function Name : ih264d_parse_slice_partition */
64/* */
65/* Description : This function is intended to parse and decode slice part */
66/* itions. Currently it's not implemented. Decoder will */
67/* print a message, skips this NAL and continues */
68/* Inputs : ps_dec Decoder parameters */
69/* ps_bitstrm Bitstream */
70/* Globals : None */
71/* Processing : This functionality needs to be implemented */
72/* Outputs : None */
73/* Returns : None */
74/* */
75/* Issues : Not implemented */
76/* */
77/* Revision History: */
78/* */
79/* DD MM YYYY Author(s) Changes (Describe the changes made) */
80/* 06 05 2002 NS Draft */
81/* */
82/*****************************************************************************/
83
84WORD32 ih264d_parse_slice_partition(dec_struct_t * ps_dec,
85 dec_bit_stream_t * ps_bitstrm)
86{
87 H264_DEC_DEBUG_PRINT("\nSlice partition not supported");
88 UNUSED(ps_dec);
89 UNUSED(ps_bitstrm);
90 return (0);
91}
92
93/*****************************************************************************/
94/* */
95/* Function Name : ih264d_parse_sei */
96/* */
97/* Description : This function is intended to parse and decode SEI */
98/* Currently it's not implemented. Decoder will print a */
99/* message, skips this NAL and continues */
100/* Inputs : ps_dec Decoder parameters */
101/* ps_bitstrm Bitstream */
102/* Globals : None */
103/* Processing : This functionality needs to be implemented */
104/* Outputs : None */
105/* Returns : None */
106/* */
107/* Issues : Not implemented */
108/* */
109/* Revision History: */
110/* */
111/* DD MM YYYY Author(s) Changes (Describe the changes made) */
112/* 06 05 2002 NS Draft */
113/* */
114/*****************************************************************************/
115WORD32 ih264d_parse_sei(dec_struct_t * ps_dec, dec_bit_stream_t * ps_bitstrm)
116{
117 UNUSED(ps_dec);
118 UNUSED(ps_bitstrm);
119 return (0);
120}
121
122/*****************************************************************************/
123/* */
124/* Function Name : ih264d_parse_filler_data */
125/* */
126/* Description : This function is intended to parse and decode filler */
127/* data NAL. Currently it's not implemented. Decoder will */
128/* print a message, skips this NAL and continues */
129/* Inputs : ps_dec Decoder parameters */
130/* ps_bitstrm Bitstream */
131/* Globals : None */
132/* Processing : This functionality needs to be implemented */
133/* Outputs : None */
134/* Returns : None */
135/* */
136/* Issues : Not implemented */
137/* */
138/* Revision History: */
139/* */
140/* DD MM YYYY Author(s) Changes (Describe the changes made) */
141/* 06 05 2002 NS Draft */
142/* */
143/*****************************************************************************/
144WORD32 ih264d_parse_filler_data(dec_struct_t * ps_dec,
145 dec_bit_stream_t * ps_bitstrm)
146{
147 UNUSED(ps_dec);
148 UNUSED(ps_bitstrm);
149 return (0);
150}
151
152/*****************************************************************************/
153/* */
154/* Function Name : ih264d_parse_end_of_stream */
155/* */
156/* Description : This function is intended to parse and decode end of */
157/* sequence. Currently it's not implemented. Decoder will */
158/* print a message, skips this NAL and continues */
159/* Inputs : ps_dec Decoder parameters */
160/* Globals : None */
161/* Processing : This functionality needs to be implemented */
162/* Outputs : None */
163/* Returns : None */
164/* */
165/* Issues : Not implemented */
166/* */
167/* Revision History: */
168/* */
169/* DD MM YYYY Author(s) Changes (Describe the changes made) */
170/* 06 05 2002 NS Draft */
171/* */
172/*****************************************************************************/
173void ih264d_parse_end_of_stream(dec_struct_t * ps_dec)
174{
175 UNUSED(ps_dec);
176 return;
177}
178
179/*!
180 **************************************************************************
181 * \if Function name : ih264d_parse_pps \endif
182 *
183 * \brief
184 * Decodes Picture Parameter set
185 *
186 * \return
187 * 0 on Success and Error code otherwise
188 **************************************************************************
189 */
190WORD32 ih264d_parse_pps(dec_struct_t * ps_dec, dec_bit_stream_t * ps_bitstrm)
191{
192 UWORD8 uc_temp;
193 dec_seq_params_t * ps_sps = NULL;
194 dec_pic_params_t * ps_pps = NULL;
195 UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
196 UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
197
198 /* Variables used for error resilience checks */
199 UWORD32 u4_temp;
200 WORD32 i_temp;
201
202 /* For High profile related syntax elements */
203 UWORD8 u1_more_data_flag;
204 WORD32 i4_i;
205
206 /*--------------------------------------------------------------------*/
207 /* Decode pic_parameter_set_id and find corresponding pic params */
208 /*--------------------------------------------------------------------*/
209 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
210 if(u4_temp & MASK_ERR_PIC_SET_ID)
211 return ERROR_INV_SPS_PPS_T;
212 ps_pps = ps_dec->pv_scratch_sps_pps;
213 *ps_pps = ps_dec->ps_pps[u4_temp];
214 ps_pps->u1_pic_parameter_set_id = (WORD8)u4_temp;
215 COPYTHECONTEXT("PPS: pic_parameter_set_id",ps_pps->u1_pic_parameter_set_id);
216
217 /************************************************/
218 /* initilization of High profile syntax element */
219 /************************************************/
220 ps_pps->i4_transform_8x8_mode_flag = 0;
221 ps_pps->i4_pic_scaling_matrix_present_flag = 0;
222
223 /*--------------------------------------------------------------------*/
224 /* Decode seq_parameter_set_id and map it to a seq_parameter_set */
225 /*--------------------------------------------------------------------*/
226 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
227 if(u4_temp & MASK_ERR_SEQ_SET_ID)
228 return ERROR_INV_SPS_PPS_T;
229 COPYTHECONTEXT("PPS: seq_parameter_set_id",u4_temp);
230 ps_sps = &ps_dec->ps_sps[u4_temp];
231 ps_pps->ps_sps = ps_sps;
232
233 /*--------------------------------------------------------------------*/
234 /* Decode entropy_coding_mode */
235 /*--------------------------------------------------------------------*/
236 ps_pps->u1_entropy_coding_mode = ih264d_get_bit_h264(ps_bitstrm);
237 COPYTHECONTEXT("PPS: entropy_coding_mode_flag",ps_pps->u1_entropy_coding_mode);
238
239 ps_pps->u1_pic_order_present_flag = ih264d_get_bit_h264(ps_bitstrm);
240 COPYTHECONTEXT("PPS: pic_order_present_flag",ps_pps->u1_pic_order_present_flag);
241
242 /*--------------------------------------------------------------------*/
243 /* Decode num_slice_groups_minus1 */
244 /*--------------------------------------------------------------------*/
245 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + 1;
246 if(u4_temp != 1)
247 {
248 UWORD32 i4_error_code;
249 i4_error_code = ERROR_FEATURE_UNAVAIL;
250 return i4_error_code;
251 }
252 ps_pps->u1_num_slice_groups = u4_temp;
253 COPYTHECONTEXT("PPS: num_slice_groups_minus1",ps_pps->u1_num_slice_groups -1);
254
255 /*--------------------------------------------------------------------*/
256 /* Other parameter set values */
257 /*--------------------------------------------------------------------*/
258 u4_temp = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
259 if(u4_temp > H264_MAX_REF_IDX)
260 return ERROR_REF_IDX;
261 ps_pps->u1_num_ref_idx_lx_active[0] = u4_temp;
262 COPYTHECONTEXT("PPS: num_ref_idx_l0_active_minus1",
263 ps_pps->u1_num_ref_idx_lx_active[0] - 1);
264
265 u4_temp = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
266 if(u4_temp > H264_MAX_REF_IDX)
267 return ERROR_REF_IDX;
268 ps_pps->u1_num_ref_idx_lx_active[1] = u4_temp;
269 COPYTHECONTEXT("PPS: num_ref_idx_l1_active_minus1",
270 ps_pps->u1_num_ref_idx_lx_active[1] - 1);
271
272 ps_pps->u1_wted_pred_flag = ih264d_get_bit_h264(ps_bitstrm);
273 COPYTHECONTEXT("PPS: weighted prediction u4_flag",ps_pps->u1_wted_pred_flag);
274 uc_temp = ih264d_get_bits_h264(ps_bitstrm, 2);
275 COPYTHECONTEXT("PPS: weighted_bipred_idc",uc_temp);
276 ps_pps->u1_wted_bipred_idc = uc_temp;
277
278 if(ps_pps->u1_wted_bipred_idc > MAX_WEIGHT_BIPRED_IDC)
279 return ERROR_INV_SPS_PPS_T;
280
281 i_temp = 26 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
282
283 if((i_temp < 0) || (i_temp > 51))
284 return ERROR_INV_RANGE_QP_T;
285
286 ps_pps->u1_pic_init_qp = i_temp;
287 COPYTHECONTEXT("PPS: pic_init_qp_minus26",ps_pps->u1_pic_init_qp - 26);
288
289 i_temp = 26 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
290
291 if((i_temp < 0) || (i_temp > 51))
292 return ERROR_INV_RANGE_QP_T;
293
294 ps_pps->u1_pic_init_qs = i_temp;
295 COPYTHECONTEXT("PPS: pic_init_qs_minus26",ps_pps->u1_pic_init_qs - 26);
296
297 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
298 if((i_temp < -12) || (i_temp > 12))
299 return ERROR_INV_RANGE_QP_T;
300 ps_pps->i1_chroma_qp_index_offset = i_temp;
301 COPYTHECONTEXT("PPS: chroma_qp_index_offset",ps_pps->i1_chroma_qp_index_offset);
302
303 /***************************************************************************/
304 /* initialize second_chroma_qp_index_offset to i1_chroma_qp_index_offset if */
305 /* second_chroma_qp_index_offset is not present in bit-ps_bitstrm */
306 /***************************************************************************/
307 ps_pps->i1_second_chroma_qp_index_offset =
308 ps_pps->i1_chroma_qp_index_offset;
309
310 ps_pps->u1_deblocking_filter_parameters_present_flag = ih264d_get_bit_h264(
311 ps_bitstrm);
312 COPYTHECONTEXT("PPS: deblocking_filter_control_present_flag",
313 ps_pps->u1_deblocking_filter_parameters_present_flag);
314 ps_pps->u1_constrained_intra_pred_flag = ih264d_get_bit_h264(ps_bitstrm);
315 COPYTHECONTEXT("PPS: constrained_intra_pred_flag",
316 ps_pps->u1_constrained_intra_pred_flag);
317 ps_pps->u1_redundant_pic_cnt_present_flag = ih264d_get_bit_h264(ps_bitstrm);
318 COPYTHECONTEXT("PPS: redundant_pic_cnt_present_flag",
319 ps_pps->u1_redundant_pic_cnt_present_flag);
320
321 /* High profile related syntax elements */
322 u1_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
323 if(u1_more_data_flag && (ps_pps->ps_sps->u1_profile_idc == HIGH_PROFILE_IDC))
324 {
325 /* read transform_8x8_mode_flag */
326 ps_pps->i4_transform_8x8_mode_flag = (WORD32)ih264d_get_bit_h264(
327 ps_bitstrm);
328
329 /* read pic_scaling_matrix_present_flag */
330 ps_pps->i4_pic_scaling_matrix_present_flag =
331 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
332
333 if(ps_pps->i4_pic_scaling_matrix_present_flag)
334 {
335 /* read the scaling matrices */
Marco Nelissen8ef4c3f2015-06-03 07:26:32 -0700[diff] [blame]336 for(i4_i = 0; i4_i < (6 + (ps_pps->i4_transform_8x8_mode_flag << 1)); i4_i++)
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]337 {
338 ps_pps->u1_pic_scaling_list_present_flag[i4_i] =
339 ih264d_get_bit_h264(ps_bitstrm);
340
341 if(ps_pps->u1_pic_scaling_list_present_flag[i4_i])
342 {
343 if(i4_i < 6)
344 {
345 ih264d_scaling_list(
346 ps_pps->i2_pic_scalinglist4x4[i4_i],
347 16,
348 &ps_pps->u1_pic_use_default_scaling_matrix_flag[i4_i],
349 ps_bitstrm);
350 }
351 else
352 {
353 ih264d_scaling_list(
354 ps_pps->i2_pic_scalinglist8x8[i4_i - 6],
355 64,
356 &ps_pps->u1_pic_use_default_scaling_matrix_flag[i4_i],
357 ps_bitstrm);
358 }
359 }
360 }
361 }
362
363 /* read second_chroma_qp_index_offset syntax element */
364 ps_pps->i1_second_chroma_qp_index_offset = ih264d_sev(
365 pu4_bitstrm_ofst, pu4_bitstrm_buf);
366
367 if((ps_pps->i1_second_chroma_qp_index_offset + 12) > 24)
368 return ERROR_INV_RANGE_QP_T;
369 }
370
Harish Mahendrakar2ee0c1b2015-09-18 15:15:50 +0530[diff] [blame]371 /* In case bitstream read has exceeded the filled size, then
372 return an error */
373 if(ps_bitstrm->u4_ofst > ps_bitstrm->u4_max_ofst + 8)
374 {
375 return ERROR_INV_SPS_PPS_T;
376 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]377 ps_pps->u1_is_valid = TRUE;
378 ps_dec->ps_pps[ps_pps->u1_pic_parameter_set_id] = *ps_pps;
379 return OK;
380}
381
382/*!
383 **************************************************************************
384 * \if Function name : ih264d_parse_sps \endif
385 *
386 * \brief
387 * Decodes Sequence parameter set from the bitstream
388 *
389 * \return
390 * 0 on Success and Error code otherwise
391 **************************************************************************
392 */
393UWORD32 ih264d_correct_level_idc(UWORD32 u4_level_idc, UWORD32 u4_total_mbs)
394{
395 UWORD32 u4_max_mbs_allowed;
396
397 switch(u4_level_idc)
398 {
399 case H264_LEVEL_1_0:
400 u4_max_mbs_allowed = MAX_MBS_LEVEL_10;
401 break;
402 case H264_LEVEL_1_1:
403 u4_max_mbs_allowed = MAX_MBS_LEVEL_11;
404 break;
405 case H264_LEVEL_1_2:
406 u4_max_mbs_allowed = MAX_MBS_LEVEL_12;
407 break;
408 case H264_LEVEL_1_3:
409 u4_max_mbs_allowed = MAX_MBS_LEVEL_13;
410 break;
411 case H264_LEVEL_2_0:
412 u4_max_mbs_allowed = MAX_MBS_LEVEL_20;
413 break;
414 case H264_LEVEL_2_1:
415 u4_max_mbs_allowed = MAX_MBS_LEVEL_21;
416 break;
417 case H264_LEVEL_2_2:
418 u4_max_mbs_allowed = MAX_MBS_LEVEL_22;
419 break;
420 case H264_LEVEL_3_0:
421 u4_max_mbs_allowed = MAX_MBS_LEVEL_30;
422 break;
423 case H264_LEVEL_3_1:
424 u4_max_mbs_allowed = MAX_MBS_LEVEL_31;
425 break;
426 case H264_LEVEL_3_2:
427 u4_max_mbs_allowed = MAX_MBS_LEVEL_32;
428 break;
429 case H264_LEVEL_4_0:
430 u4_max_mbs_allowed = MAX_MBS_LEVEL_40;
431 break;
432 case H264_LEVEL_4_1:
433 u4_max_mbs_allowed = MAX_MBS_LEVEL_41;
434 break;
435 case H264_LEVEL_4_2:
436 u4_max_mbs_allowed = MAX_MBS_LEVEL_42;
437 break;
438 case H264_LEVEL_5_0:
439 u4_max_mbs_allowed = MAX_MBS_LEVEL_50;
440 break;
441 case H264_LEVEL_5_1:
442 default:
443 u4_max_mbs_allowed = MAX_MBS_LEVEL_51;
444 break;
445
446 }
447
448 /*correct of the level is incorrect*/
449 if(u4_total_mbs > u4_max_mbs_allowed)
450 {
451 if(u4_total_mbs > MAX_MBS_LEVEL_50)
452 u4_level_idc = H264_LEVEL_5_1;
453 else if(u4_total_mbs > MAX_MBS_LEVEL_42)
454 u4_level_idc = H264_LEVEL_5_0;
455 else if(u4_total_mbs > MAX_MBS_LEVEL_41)
456 u4_level_idc = H264_LEVEL_4_2;
457 else if(u4_total_mbs > MAX_MBS_LEVEL_40)
458 u4_level_idc = H264_LEVEL_4_1;
459 else if(u4_total_mbs > MAX_MBS_LEVEL_32)
460 u4_level_idc = H264_LEVEL_4_0;
461 else if(u4_total_mbs > MAX_MBS_LEVEL_31)
462 u4_level_idc = H264_LEVEL_3_2;
463 else if(u4_total_mbs > MAX_MBS_LEVEL_30)
464 u4_level_idc = H264_LEVEL_3_1;
465 else if(u4_total_mbs > MAX_MBS_LEVEL_21)
466 u4_level_idc = H264_LEVEL_3_0;
467 else if(u4_total_mbs > MAX_MBS_LEVEL_20)
468 u4_level_idc = H264_LEVEL_2_1;
469 else if(u4_total_mbs > MAX_MBS_LEVEL_10)
470 u4_level_idc = H264_LEVEL_2_0;
471 }
472
473 return (u4_level_idc);
474
475}
476WORD32 ih264d_parse_sps(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm)
477{
478 UWORD8 i;
479 dec_seq_params_t *ps_seq = NULL;
480 UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id;
481 UWORD16 i2_max_frm_num;
482 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
483 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
484 UWORD8 u1_frm, uc_constraint_set0_flag, uc_constraint_set1_flag;
485
486 UWORD32 u4_temp;
487 WORD32 pic_height_in_map_units_minus1 = 0;
488 UWORD32 u2_pic_wd = 0;
489 UWORD32 u2_pic_ht = 0;
490 UWORD32 u2_frm_wd_y = 0;
491 UWORD32 u2_frm_ht_y = 0;
492 UWORD32 u2_frm_wd_uv = 0;
493 UWORD32 u2_frm_ht_uv = 0;
494 UWORD32 u2_crop_offset_y = 0;
495 UWORD32 u2_crop_offset_uv = 0;
496 WORD32 ret;
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]497 UWORD32 u4_num_reorder_frames;
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]498 /* High profile related syntax element */
499 WORD32 i4_i;
500 /* G050 */
501 UWORD8 u1_frame_cropping_flag, u1_frame_cropping_rect_left_ofst,
502 u1_frame_cropping_rect_right_ofst,
503 u1_frame_cropping_rect_top_ofst,
504 u1_frame_cropping_rect_bottom_ofst;
505 /* G050 */
506 /*--------------------------------------------------------------------*/
507 /* Decode seq_parameter_set_id and profile and level values */
508 /*--------------------------------------------------------------------*/
509 SWITCHONTRACE;
510 u1_profile_idc = ih264d_get_bits_h264(ps_bitstrm, 8);
511 COPYTHECONTEXT("SPS: profile_idc",u1_profile_idc);
512
513 /* G050 */
514 uc_constraint_set0_flag = ih264d_get_bit_h264(ps_bitstrm);
515 uc_constraint_set1_flag = ih264d_get_bit_h264(ps_bitstrm);
516 ih264d_get_bit_h264(ps_bitstrm);
517
518 /*****************************************************/
519 /* Read 5 bits for uc_constraint_set3_flag (1 bit) */
520 /* and reserved_zero_4bits (4 bits) - Sushant */
521 /*****************************************************/
522 ih264d_get_bits_h264(ps_bitstrm, 5);
523 /* G050 */
524
525 /* Check whether particular profile is suported or not */
526 /* Check whether particular profile is suported or not */
527 if((u1_profile_idc != MAIN_PROFILE_IDC) &&
528
529 (u1_profile_idc != BASE_PROFILE_IDC) &&
530
531 (u1_profile_idc != HIGH_PROFILE_IDC)
532
533 )
534 {
535
Harish Mahendrakard7eee552016-12-05 13:36:19 +0530[diff] [blame]536 /* Apart from Baseline, main and high profile,
537 * only extended profile is supported provided
538 * uc_constraint_set0_flag or uc_constraint_set1_flag are set to 1
539 */
540 if((u1_profile_idc != EXTENDED_PROFILE_IDC) ||
541 ((uc_constraint_set1_flag != 1) && (uc_constraint_set0_flag != 1)))
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]542 {
Harish Mahendrakard7eee552016-12-05 13:36:19 +0530[diff] [blame]543 return (ERROR_FEATURE_UNAVAIL);
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]544 }
545 }
546
547 u1_level_idc = ih264d_get_bits_h264(ps_bitstrm, 8);
548
Marco Nelissen8ef4c3f2015-06-03 07:26:32 -0700[diff] [blame]549
Marco Nelissen8ef4c3f2015-06-03 07:26:32 -0700[diff] [blame]550
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]551 COPYTHECONTEXT("SPS: u4_level_idc",u1_level_idc);
552
553 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
554 if(u4_temp & MASK_ERR_SEQ_SET_ID)
555 return ERROR_INV_SPS_PPS_T;
556 u1_seq_parameter_set_id = u4_temp;
557 COPYTHECONTEXT("SPS: seq_parameter_set_id",
558 u1_seq_parameter_set_id);
559
560 /*--------------------------------------------------------------------*/
561 /* Find an seq param entry in seqparam array of decStruct */
562 /*--------------------------------------------------------------------*/
563
564 ps_seq = ps_dec->pv_scratch_sps_pps;
565 *ps_seq = ps_dec->ps_sps[u1_seq_parameter_set_id];
Harish Mahendrakar251b0072015-08-04 09:55:15 +0530[diff] [blame]566
567 if(NULL == ps_dec->ps_cur_sps)
568 ps_dec->ps_cur_sps = ps_seq;
569
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]570 if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_profile_idc != u1_profile_idc))
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]571 {
572 ps_dec->u1_res_changed = 1;
573 return IVD_RES_CHANGED;
574 }
575
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]576 if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_level_idc != u1_level_idc))
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]577 {
578 ps_dec->u1_res_changed = 1;
579 return IVD_RES_CHANGED;
580 }
581
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]582 ps_seq->u1_profile_idc = u1_profile_idc;
583 ps_seq->u1_level_idc = u1_level_idc;
584 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id;
585
586 /*******************************************************************/
587 /* Initializations for high profile - Sushant */
588 /*******************************************************************/
589 ps_seq->i4_chroma_format_idc = 1;
590 ps_seq->i4_bit_depth_luma_minus8 = 0;
591 ps_seq->i4_bit_depth_chroma_minus8 = 0;
592 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0;
593 ps_seq->i4_seq_scaling_matrix_present_flag = 0;
594 if(u1_profile_idc == HIGH_PROFILE_IDC)
595 {
596
597 /* reading chroma_format_idc */
598 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst,
599 pu4_bitstrm_buf);
600
601 /* Monochrome is not supported */
602 if(ps_seq->i4_chroma_format_idc != 1)
603 {
604 return ERROR_INV_SPS_PPS_T;
605 }
606
607 /* reading bit_depth_luma_minus8 */
608 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
609 pu4_bitstrm_buf);
610
611 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
612 {
613 return ERROR_INV_SPS_PPS_T;
614 }
615
616 /* reading bit_depth_chroma_minus8 */
617 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
618 pu4_bitstrm_buf);
619
620 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
621 {
622 return ERROR_INV_SPS_PPS_T;
623 }
624
625 /* reading qpprime_y_zero_transform_bypass_flag */
626 ps_seq->i4_qpprime_y_zero_transform_bypass_flag =
627 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
628
629 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
630 {
631 return ERROR_INV_SPS_PPS_T;
632 }
633
634 /* reading seq_scaling_matrix_present_flag */
635 ps_seq->i4_seq_scaling_matrix_present_flag =
636 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
637
638 if(ps_seq->i4_seq_scaling_matrix_present_flag)
639 {
640 for(i4_i = 0; i4_i < 8; i4_i++)
641 {
642 ps_seq->u1_seq_scaling_list_present_flag[i4_i] =
643 ih264d_get_bit_h264(ps_bitstrm);
644
645 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */
646 /* before calling scaling list */
647 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0;
648
649 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i])
650 {
651 if(i4_i < 6)
652 {
653 ih264d_scaling_list(
654 ps_seq->i2_scalinglist4x4[i4_i],
655 16,
656 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
657 ps_bitstrm);
658 }
659 else
660 {
661 ih264d_scaling_list(
662 ps_seq->i2_scalinglist8x8[i4_i - 6],
663 64,
664 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
665 ps_bitstrm);
666 }
667 }
668 }
669 }
670 }
671 /*--------------------------------------------------------------------*/
672 /* Decode MaxFrameNum */
673 /*--------------------------------------------------------------------*/
674 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
675 if(u4_temp > MAX_BITS_IN_FRAME_NUM)
676 {
677 return ERROR_INV_SPS_PPS_T;
678 }
679 ps_seq->u1_bits_in_frm_num = u4_temp;
680 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4",
681 (ps_seq->u1_bits_in_frm_num - 4));
682
683 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num));
684 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1;
685 /*--------------------------------------------------------------------*/
686 /* Decode picture order count and related values */
687 /*--------------------------------------------------------------------*/
688 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
689
690 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE)
691 {
692 return ERROR_INV_POC_TYPE_T;
693 }
694 ps_seq->u1_pic_order_cnt_type = u4_temp;
695 COPYTHECONTEXT("SPS: pic_order_cnt_type",ps_seq->u1_pic_order_cnt_type);
696
697 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1;
698 if(ps_seq->u1_pic_order_cnt_type == 0)
699 {
700 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
701 if(u4_temp > MAX_BITS_IN_POC_LSB)
702 {
703 return ERROR_INV_SPS_PPS_T;
704 }
705 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = u4_temp;
706 ps_seq->i4_max_pic_order_cntLsb = (1 << u4_temp);
707 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4",(u4_temp - 4));
708 }
709 else if(ps_seq->u1_pic_order_cnt_type == 1)
710 {
711 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264(
712 ps_bitstrm);
713 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag",
714 ps_seq->u1_delta_pic_order_always_zero_flag);
715
716 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst,
717 pu4_bitstrm_buf);
718 COPYTHECONTEXT("SPS: offset_for_non_ref_pic",
719 ps_seq->i4_ofst_for_non_ref_pic);
720
721 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev(
722 pu4_bitstrm_ofst, pu4_bitstrm_buf);
723 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field",
724 ps_seq->i4_ofst_for_top_to_bottom_field);
725
726 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
727 if(u4_temp > 255)
728 return ERROR_INV_SPS_PPS_T;
729 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp;
730 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle",
731 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle);
732
733 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++)
734 {
735 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev(
736 pu4_bitstrm_ofst, pu4_bitstrm_buf);
737 COPYTHECONTEXT("SPS: offset_for_ref_frame",
738 ps_seq->i4_ofst_for_ref_frame[i]);
739 }
740 }
741
742 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
743
744 if((u4_temp > H264_MAX_REF_PICS))
745 {
746 return ERROR_NUM_REF;
747 }
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]748
749 /* Compare with older num_ref_frames is header is already once */
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]750 if((ps_dec->i4_header_decoded & 1) && (ps_seq->u1_num_ref_frames != u4_temp))
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]751 {
752 ps_dec->u1_res_changed = 1;
753 return IVD_RES_CHANGED;
754 }
755
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]756 ps_seq->u1_num_ref_frames = u4_temp;
757 COPYTHECONTEXT("SPS: num_ref_frames",ps_seq->u1_num_ref_frames);
758
759 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264(
760 ps_bitstrm);
761 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag",
762 ps_seq->u1_gaps_in_frame_num_value_allowed_flag);
763
764 /*--------------------------------------------------------------------*/
765 /* Decode FrameWidth and FrameHeight and related values */
766 /*--------------------------------------------------------------------*/
767 ps_seq->u2_frm_wd_in_mbs = 1
768 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
769 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1",
770 ps_seq->u2_frm_wd_in_mbs - 1);
771 u2_pic_wd = (ps_seq->u2_frm_wd_in_mbs << 4);
772
773 pic_height_in_map_units_minus1 = ih264d_uev(pu4_bitstrm_ofst,
774 pu4_bitstrm_buf);
775 ps_seq->u2_frm_ht_in_mbs = 1 + pic_height_in_map_units_minus1;
776
777 u2_pic_ht = (ps_seq->u2_frm_ht_in_mbs << 4);
778
779 /*--------------------------------------------------------------------*/
780 /* Get the value of MaxMbAddress and Number of bits needed for it */
781 /*--------------------------------------------------------------------*/
782 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs
783 * ps_seq->u2_frm_ht_in_mbs) - 1;
784
785 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1;
786
787 ps_seq->u1_level_idc = ih264d_correct_level_idc(
788 u1_level_idc, ps_seq->u2_total_num_of_mbs);
789
790 u1_frm = ih264d_get_bit_h264(ps_bitstrm);
791 ps_seq->u1_frame_mbs_only_flag = u1_frm;
792
793 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm);
794
795 if(!u1_frm)
796 {
797 u2_pic_ht <<= 1;
798 ps_seq->u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm);
799 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag",
800 ps_seq->u1_mb_aff_flag);
801
802 }
803 else
804 ps_seq->u1_mb_aff_flag = 0;
805
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]806 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm);
807
808 COPYTHECONTEXT("SPS: direct_8x8_inference_flag",
809 ps_seq->u1_direct_8x8_inference_flag);
810
811 /* G050 */
812 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm);
813 COPYTHECONTEXT("SPS: frame_cropping_flag",u1_frame_cropping_flag);
814
815 if(u1_frame_cropping_flag)
816 {
817 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst,
818 pu4_bitstrm_buf);
819 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset",
820 u1_frame_cropping_rect_left_ofst);
821 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst,
822 pu4_bitstrm_buf);
823 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset",
824 u1_frame_cropping_rect_right_ofst);
825 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst,
826 pu4_bitstrm_buf);
827 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset",
828 u1_frame_cropping_rect_top_ofst);
829 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst,
830 pu4_bitstrm_buf);
831 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset",
832 u1_frame_cropping_rect_bottom_ofst);
833 }
834 /* G050 */
835
836 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
837 COPYTHECONTEXT("SPS: vui_parameters_present_flag",
838 ps_seq->u1_vui_parameters_present_flag);
839
840 u2_frm_wd_y = u2_pic_wd + (UWORD8)(PAD_LEN_Y_H << 1);
841 if(1 == ps_dec->u4_share_disp_buf)
842 {
843 if(ps_dec->u4_app_disp_width > u2_frm_wd_y)
844 u2_frm_wd_y = ps_dec->u4_app_disp_width;
845 }
846
847 u2_frm_ht_y = u2_pic_ht + (UWORD8)(PAD_LEN_Y_V << 2);
848 u2_frm_wd_uv = u2_pic_wd + (UWORD8)(PAD_LEN_UV_H << 2);
849 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y);
850
851 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8)(PAD_LEN_UV_V << 2);
852 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1));
853
854
855 /* Calculate display picture width, height and start u4_ofst from YUV420 */
856 /* pictute buffers as per cropping information parsed above */
857 {
858 UWORD16 u2_rgt_ofst = 0;
859 UWORD16 u2_lft_ofst = 0;
860 UWORD16 u2_top_ofst = 0;
861 UWORD16 u2_btm_ofst = 0;
862 UWORD8 u1_frm_mbs_flag;
863 UWORD8 u1_vert_mult_factor;
864 WORD32 i4_cropped_ht, i4_cropped_wd;
865
866 if(u1_frame_cropping_flag)
867 {
868 /* Calculate right and left u4_ofst for cropped picture */
869 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1;
870 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1;
871
872 /* Know frame MBs only u4_flag */
873 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag);
874
875 /* Simplify the vertical u4_ofst calculation from field/frame */
876 u1_vert_mult_factor = (2 - u1_frm_mbs_flag);
877
878 /* Calculate bottom and top u4_ofst for cropped picture */
879 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst
880 << u1_vert_mult_factor);
881 u2_top_ofst = (u1_frame_cropping_rect_top_ofst
882 << u1_vert_mult_factor);
883 }
884
885 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/
886 /* cropped picture buffer */
887 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst);
888 u2_crop_offset_uv = (u2_frm_wd_uv * (u2_top_ofst >> 1))
889 + (u2_lft_ofst >> 1) * YUV420SP_FACTOR;
890 /* Calculate the display picture width and height based on crop */
891 /* information */
892 i4_cropped_ht = u2_pic_ht - (u2_btm_ofst + u2_top_ofst);
893 i4_cropped_wd = u2_pic_wd - (u2_rgt_ofst + u2_lft_ofst);
894
895 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE))
896 {
897 return ERROR_INV_SPS_PPS_T;
898 }
899
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]900 if((ps_dec->i4_header_decoded & 1) && (ps_dec->u2_pic_wd != u2_pic_wd))
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]901 {
902 ps_dec->u1_res_changed = 1;
903 return IVD_RES_CHANGED;
904 }
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]905 if((ps_dec->i4_header_decoded & 1) && (ps_dec->u2_pic_ht != u2_pic_ht))
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]906 {
907 ps_dec->u1_res_changed = 1;
908 return IVD_RES_CHANGED;
909 }
910
Harish Mahendrakar5351d3a2015-10-06 09:03:25 +0530[diff] [blame]911 /* Check for unsupported resolutions */
912 if((u2_pic_wd > H264_MAX_FRAME_WIDTH) || (u2_pic_ht > H264_MAX_FRAME_HEIGHT))
913 {
914 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
915 }
916
Harish Mahendrakar69b51912017-01-17 13:13:41 +0530[diff] [blame]917 /* If MBAff is enabled, decoder support is limited to streams with
918 * width less than half of H264_MAX_FRAME_WIDTH.
919 * In case of MBAff decoder processes two rows at a time
920 */
921 if((u2_pic_wd << ps_seq->u1_mb_aff_flag) > H264_MAX_FRAME_WIDTH)
922 {
923 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
924 }
925
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]926 ps_dec->u2_disp_height = i4_cropped_ht;
927
928 ps_dec->u2_disp_width = i4_cropped_wd;
929
930 }
931
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]932 /* Backup u4_num_reorder_frames if header is already decoded */
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]933 if((ps_dec->i4_header_decoded & 1) &&
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]934 (1 == ps_seq->u1_vui_parameters_present_flag) &&
935 (1 == ps_seq->s_vui.u1_bitstream_restriction_flag))
936 {
937 u4_num_reorder_frames = ps_seq->s_vui.u4_num_reorder_frames;
938 }
939 else
940 {
941 u4_num_reorder_frames = -1;
942 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]943 if(1 == ps_seq->u1_vui_parameters_present_flag)
944 {
945 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm);
946 if(ret != OK)
947 return ret;
948 }
949
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]950 /* Compare older u4_num_reorder_frames with the new one if header is already decoded */
Hamsalekha S8454dbf2017-02-21 16:02:23 +0530[diff] [blame^]951 if((ps_dec->i4_header_decoded & 1) &&
Wonsik Kim142221a2016-04-12 15:20:08 +0900[diff] [blame]952 (-1 != (WORD32)u4_num_reorder_frames) &&
953 (1 == ps_seq->u1_vui_parameters_present_flag) &&
954 (1 == ps_seq->s_vui.u1_bitstream_restriction_flag) &&
955 (ps_seq->s_vui.u4_num_reorder_frames != u4_num_reorder_frames))
956 {
957 ps_dec->u1_res_changed = 1;
958 return IVD_RES_CHANGED;
959 }
960
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]961 ps_dec->u2_pic_wd = u2_pic_wd;
962 ps_dec->u2_pic_ht = u2_pic_ht;
963
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]964 /* Determining the Width and Height of Frame from that of Picture */
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]965 ps_dec->u2_frm_wd_y = u2_frm_wd_y;
966 ps_dec->u2_frm_ht_y = u2_frm_ht_y;
967
968 ps_dec->u2_frm_wd_uv = u2_frm_wd_uv;
969 ps_dec->u2_frm_ht_uv = u2_frm_ht_uv;
970 ps_dec->s_pad_mgr.u1_pad_len_y_v = (UWORD8)(PAD_LEN_Y_V << (1 - u1_frm));
971 ps_dec->s_pad_mgr.u1_pad_len_cr_v = (UWORD8)(PAD_LEN_UV_V << (1 - u1_frm));
972
973 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs;
974 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs;
975
976 ps_dec->u2_crop_offset_y = u2_crop_offset_y;
977 ps_dec->u2_crop_offset_uv = u2_crop_offset_uv;
978
Harish Mahendrakar2ee0c1b2015-09-18 15:15:50 +0530[diff] [blame]979 /* In case bitstream read has exceeded the filled size, then
980 return an error */
981 if(ps_bitstrm->u4_ofst > ps_bitstrm->u4_max_ofst)
982 {
983 return ERROR_INV_SPS_PPS_T;
984 }
985 ps_seq->u1_is_valid = TRUE;
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]986 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq;
987
988 return OK;
989}
990
991/*!
992 **************************************************************************
993 * \if Function name : ih264d_parse_end_of_sequence \endif
994 *
995 * \brief
996 * Decodes End of Sequence.
997 *
998 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
999 *
1000 * \return
1001 * 0 on Success and error code otherwise
1002 **************************************************************************
1003 */
1004WORD32 ih264d_parse_end_of_sequence(dec_struct_t * ps_dec)
1005{
1006 WORD32 ret;
1007
1008 ret = ih264d_end_of_pic_processing(ps_dec);
1009 return ret;
1010}
1011
1012/*!
1013 **************************************************************************
1014 * \if Function name : AcessUnitDelimiterRbsp \endif
1015 *
1016 * \brief
1017 * Decodes AcessUnitDelimiterRbsp.
1018 *
1019 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
1020 *
1021 * \return
1022 * 0 on Success and error code otherwise
1023 **************************************************************************
1024 */
1025
1026WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec)
1027{
1028 UWORD8 u1_primary_pic_type;
1029 u1_primary_pic_type = ih264d_get_bits_h264(ps_dec->ps_bitstrm, 3);
1030 switch(u1_primary_pic_type)
1031 {
1032 case I_PIC:
1033 case SI_PIC:
1034 case ISI_PIC:
1035 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_I;
1036 break;
1037 default:
1038 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_UNKNOWN;
1039 }
1040 return (0);
1041}
1042/*!
1043 **************************************************************************
1044 * \if Function name : ih264d_parse_nal_unit \endif
1045 *
1046 * \brief
1047 * Decodes NAL unit
1048 *
1049 * \return
1050 * 0 on Success and error code otherwise
1051 **************************************************************************
1052 */
1053
1054WORD32 ih264d_parse_nal_unit(iv_obj_t *dec_hdl,
1055 ivd_video_decode_op_t *ps_dec_op,
1056 UWORD8 *pu1_buf,
1057 UWORD32 u4_length)
1058{
1059
1060 dec_bit_stream_t *ps_bitstrm;
1061
1062
1063 dec_struct_t *ps_dec = (dec_struct_t *)dec_hdl->pv_codec_handle;
1064 ivd_video_decode_ip_t *ps_dec_in =
1065 (ivd_video_decode_ip_t *)ps_dec->pv_dec_in;
1066 dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice;
1067 UWORD8 u1_first_byte, u1_nal_ref_idc;
1068 UWORD8 u1_nal_unit_type;
1069 WORD32 i_status = OK;
1070 ps_bitstrm = ps_dec->ps_bitstrm;
1071
1072 if(pu1_buf)
1073 {
1074 if(u4_length)
1075 {
1076 ps_dec_op->u4_frame_decoded_flag = 0;
1077 ih264d_process_nal_unit(ps_dec->ps_bitstrm, pu1_buf,
1078 u4_length);
1079
1080 SWITCHOFFTRACE;
1081 u1_first_byte = ih264d_get_bits_h264(ps_bitstrm, 8);
1082
1083 if(NAL_FORBIDDEN_BIT(u1_first_byte))
1084 {
1085 H264_DEC_DEBUG_PRINT("\nForbidden bit set in Nal Unit, Let's try\n");
1086 }
1087 u1_nal_unit_type = NAL_UNIT_TYPE(u1_first_byte);
Harish Mahendrakar5e4f64c2016-06-01 13:31:45 +0530[diff] [blame]1088 // if any other nal unit other than slice nal is encountered in between a
1089 // frame break out of loop without consuming header
Harish Mahendrakard1896de2016-12-20 12:16:31 +0530[diff] [blame]1090 if ((ps_dec->u4_slice_start_code_found == 1)
1091 && (ps_dec->u1_pic_decode_done != 1)
1092 && (u1_nal_unit_type > IDR_SLICE_NAL))
Harish Mahendrakar5e4f64c2016-06-01 13:31:45 +0530[diff] [blame]1093 {
1094 return ERROR_INCOMPLETE_FRAME;
1095 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1096 ps_dec->u1_nal_unit_type = u1_nal_unit_type;
1097 u1_nal_ref_idc = (UWORD8)(NAL_REF_IDC(u1_first_byte));
1098 //Skip all NALUs if SPS and PPS are not decoded
1099 switch(u1_nal_unit_type)
1100 {
1101 case SLICE_DATA_PARTITION_A_NAL:
1102 case SLICE_DATA_PARTITION_B_NAL:
1103 case SLICE_DATA_PARTITION_C_NAL:
1104 if(!ps_dec->i4_decode_header)
1105 ih264d_parse_slice_partition(ps_dec, ps_bitstrm);
1106
1107 break;
1108
1109 case IDR_SLICE_NAL:
1110 case SLICE_NAL:
1111
1112 /* ! */
1113 DEBUG_THREADS_PRINTF("Decoding a slice NAL\n");
1114 if(!ps_dec->i4_decode_header)
1115 {
1116 if(ps_dec->i4_header_decoded == 3)
1117 {
1118 /* ! */
1119 ps_dec->u4_slice_start_code_found = 1;
1120
1121 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1122
1123 i_status = ih264d_parse_decode_slice(
1124 (UWORD8)(u1_nal_unit_type
1125 == IDR_SLICE_NAL),
1126 u1_nal_ref_idc, ps_dec);
1127
1128 if(i_status != OK)
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1129 {
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1130 return i_status;
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1131 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1132 }
1133 else
1134 {
1135 H264_DEC_DEBUG_PRINT(
1136 "\nSlice NAL Supplied but no header has been supplied\n");
1137 }
1138 }
1139 break;
1140
1141 case SEI_NAL:
1142 if(!ps_dec->i4_decode_header)
1143 {
1144 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1145 i_status = ih264d_parse_sei_message(ps_dec, ps_bitstrm);
1146 if(i_status != OK)
1147 return i_status;
1148 ih264d_parse_sei(ps_dec, ps_bitstrm);
1149 }
1150 break;
1151 case SEQ_PARAM_NAL:
1152 /* ! */
1153 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1154 i_status = ih264d_parse_sps(ps_dec, ps_bitstrm);
1155 if(i_status == ERROR_INV_SPS_PPS_T)
1156 return i_status;
1157 if(!i_status)
1158 ps_dec->i4_header_decoded |= 0x1;
1159 break;
1160
1161 case PIC_PARAM_NAL:
1162 /* ! */
1163 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1164 i_status = ih264d_parse_pps(ps_dec, ps_bitstrm);
1165 if(i_status == ERROR_INV_SPS_PPS_T)
1166 return i_status;
1167 if(!i_status)
1168 ps_dec->i4_header_decoded |= 0x2;
1169 break;
1170 case ACCESS_UNIT_DELIMITER_RBSP:
1171 if(!ps_dec->i4_decode_header)
1172 {
1173 ih264d_access_unit_delimiter_rbsp(ps_dec);
1174 }
1175 break;
1176 //Let us ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL
1177 case END_OF_STREAM_RBSP:
1178 if(!ps_dec->i4_decode_header)
1179 {
1180 ih264d_parse_end_of_stream(ps_dec);
1181 }
1182 break;
1183 case FILLER_DATA_NAL:
1184 if(!ps_dec->i4_decode_header)
1185 {
1186 ih264d_parse_filler_data(ps_dec, ps_bitstrm);
1187 }
1188 break;
1189 default:
1190 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type);
1191 break;
1192 }
1193
1194 }
1195
1196 }
1197
1198 return i_status;
1199
1200}
1201