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gerrit-public.fairphone.software / platform / external / libavc / 2ee0c1bced131ffb06d1b430b08a202cd3a52005 / . / decoder / ih264d_parse_headers.c
blob: 21ebfa8344f021666cd96169b352be5e7d29bfc4 [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;
497
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
536 if((uc_constraint_set1_flag != 1) && (uc_constraint_set0_flag != 1))
537 {
538 if(NULL != ps_dec)
539 {
540 UWORD32 i4_error_code;
541 i4_error_code = ERROR_FEATURE_UNAVAIL;
542 return i4_error_code;
543 }
544 else
545 {
546 return (ERROR_FEATURE_UNAVAIL);
547 }
548 }
549 }
550
551 u1_level_idc = ih264d_get_bits_h264(ps_bitstrm, 8);
552
Marco Nelissen8ef4c3f2015-06-03 07:26:32 -0700[diff] [blame]553
Marco Nelissen8ef4c3f2015-06-03 07:26:32 -0700[diff] [blame]554
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]555 COPYTHECONTEXT("SPS: u4_level_idc",u1_level_idc);
556
557 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
558 if(u4_temp & MASK_ERR_SEQ_SET_ID)
559 return ERROR_INV_SPS_PPS_T;
560 u1_seq_parameter_set_id = u4_temp;
561 COPYTHECONTEXT("SPS: seq_parameter_set_id",
562 u1_seq_parameter_set_id);
563
564 /*--------------------------------------------------------------------*/
565 /* Find an seq param entry in seqparam array of decStruct */
566 /*--------------------------------------------------------------------*/
567
568 ps_seq = ps_dec->pv_scratch_sps_pps;
569 *ps_seq = ps_dec->ps_sps[u1_seq_parameter_set_id];
570 ps_seq->u1_profile_idc = u1_profile_idc;
571 ps_seq->u1_level_idc = u1_level_idc;
572 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id;
573
574 /*******************************************************************/
575 /* Initializations for high profile - Sushant */
576 /*******************************************************************/
577 ps_seq->i4_chroma_format_idc = 1;
578 ps_seq->i4_bit_depth_luma_minus8 = 0;
579 ps_seq->i4_bit_depth_chroma_minus8 = 0;
580 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0;
581 ps_seq->i4_seq_scaling_matrix_present_flag = 0;
582 if(u1_profile_idc == HIGH_PROFILE_IDC)
583 {
584
585 /* reading chroma_format_idc */
586 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst,
587 pu4_bitstrm_buf);
588
589 /* Monochrome is not supported */
590 if(ps_seq->i4_chroma_format_idc != 1)
591 {
592 return ERROR_INV_SPS_PPS_T;
593 }
594
595 /* reading bit_depth_luma_minus8 */
596 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
597 pu4_bitstrm_buf);
598
599 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
600 {
601 return ERROR_INV_SPS_PPS_T;
602 }
603
604 /* reading bit_depth_chroma_minus8 */
605 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
606 pu4_bitstrm_buf);
607
608 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
609 {
610 return ERROR_INV_SPS_PPS_T;
611 }
612
613 /* reading qpprime_y_zero_transform_bypass_flag */
614 ps_seq->i4_qpprime_y_zero_transform_bypass_flag =
615 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
616
617 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
618 {
619 return ERROR_INV_SPS_PPS_T;
620 }
621
622 /* reading seq_scaling_matrix_present_flag */
623 ps_seq->i4_seq_scaling_matrix_present_flag =
624 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
625
626 if(ps_seq->i4_seq_scaling_matrix_present_flag)
627 {
628 for(i4_i = 0; i4_i < 8; i4_i++)
629 {
630 ps_seq->u1_seq_scaling_list_present_flag[i4_i] =
631 ih264d_get_bit_h264(ps_bitstrm);
632
633 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */
634 /* before calling scaling list */
635 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0;
636
637 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i])
638 {
639 if(i4_i < 6)
640 {
641 ih264d_scaling_list(
642 ps_seq->i2_scalinglist4x4[i4_i],
643 16,
644 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
645 ps_bitstrm);
646 }
647 else
648 {
649 ih264d_scaling_list(
650 ps_seq->i2_scalinglist8x8[i4_i - 6],
651 64,
652 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
653 ps_bitstrm);
654 }
655 }
656 }
657 }
658 }
659 /*--------------------------------------------------------------------*/
660 /* Decode MaxFrameNum */
661 /*--------------------------------------------------------------------*/
662 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
663 if(u4_temp > MAX_BITS_IN_FRAME_NUM)
664 {
665 return ERROR_INV_SPS_PPS_T;
666 }
667 ps_seq->u1_bits_in_frm_num = u4_temp;
668 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4",
669 (ps_seq->u1_bits_in_frm_num - 4));
670
671 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num));
672 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1;
673 /*--------------------------------------------------------------------*/
674 /* Decode picture order count and related values */
675 /*--------------------------------------------------------------------*/
676 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
677
678 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE)
679 {
680 return ERROR_INV_POC_TYPE_T;
681 }
682 ps_seq->u1_pic_order_cnt_type = u4_temp;
683 COPYTHECONTEXT("SPS: pic_order_cnt_type",ps_seq->u1_pic_order_cnt_type);
684
685 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1;
686 if(ps_seq->u1_pic_order_cnt_type == 0)
687 {
688 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
689 if(u4_temp > MAX_BITS_IN_POC_LSB)
690 {
691 return ERROR_INV_SPS_PPS_T;
692 }
693 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = u4_temp;
694 ps_seq->i4_max_pic_order_cntLsb = (1 << u4_temp);
695 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4",(u4_temp - 4));
696 }
697 else if(ps_seq->u1_pic_order_cnt_type == 1)
698 {
699 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264(
700 ps_bitstrm);
701 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag",
702 ps_seq->u1_delta_pic_order_always_zero_flag);
703
704 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst,
705 pu4_bitstrm_buf);
706 COPYTHECONTEXT("SPS: offset_for_non_ref_pic",
707 ps_seq->i4_ofst_for_non_ref_pic);
708
709 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev(
710 pu4_bitstrm_ofst, pu4_bitstrm_buf);
711 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field",
712 ps_seq->i4_ofst_for_top_to_bottom_field);
713
714 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
715 if(u4_temp > 255)
716 return ERROR_INV_SPS_PPS_T;
717 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp;
718 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle",
719 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle);
720
721 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++)
722 {
723 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev(
724 pu4_bitstrm_ofst, pu4_bitstrm_buf);
725 COPYTHECONTEXT("SPS: offset_for_ref_frame",
726 ps_seq->i4_ofst_for_ref_frame[i]);
727 }
728 }
729
730 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
731
732 if((u4_temp > H264_MAX_REF_PICS))
733 {
734 return ERROR_NUM_REF;
735 }
736 ps_seq->u1_num_ref_frames = u4_temp;
Hamsalekha S8a503282015-07-28 14:41:24 +0530[diff] [blame]737
738 if(ps_seq->u1_num_ref_frames > ps_dec->u4_num_ref_frames_at_init)
739 {
740 return IH264D_UNSUPPORTED_NUM_REF_FRAMES;
741 }
742
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]743 COPYTHECONTEXT("SPS: num_ref_frames",ps_seq->u1_num_ref_frames);
744
745 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264(
746 ps_bitstrm);
747 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag",
748 ps_seq->u1_gaps_in_frame_num_value_allowed_flag);
749
750 /*--------------------------------------------------------------------*/
751 /* Decode FrameWidth and FrameHeight and related values */
752 /*--------------------------------------------------------------------*/
753 ps_seq->u2_frm_wd_in_mbs = 1
754 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
755 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1",
756 ps_seq->u2_frm_wd_in_mbs - 1);
757 u2_pic_wd = (ps_seq->u2_frm_wd_in_mbs << 4);
758
759 pic_height_in_map_units_minus1 = ih264d_uev(pu4_bitstrm_ofst,
760 pu4_bitstrm_buf);
761 ps_seq->u2_frm_ht_in_mbs = 1 + pic_height_in_map_units_minus1;
762
763 u2_pic_ht = (ps_seq->u2_frm_ht_in_mbs << 4);
764
765 /*--------------------------------------------------------------------*/
766 /* Get the value of MaxMbAddress and Number of bits needed for it */
767 /*--------------------------------------------------------------------*/
768 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs
769 * ps_seq->u2_frm_ht_in_mbs) - 1;
770
771 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1;
772
773 ps_seq->u1_level_idc = ih264d_correct_level_idc(
774 u1_level_idc, ps_seq->u2_total_num_of_mbs);
775
776 u1_frm = ih264d_get_bit_h264(ps_bitstrm);
777 ps_seq->u1_frame_mbs_only_flag = u1_frm;
778
779 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm);
780
781 if(!u1_frm)
782 {
783 u2_pic_ht <<= 1;
784 ps_seq->u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm);
785 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag",
786 ps_seq->u1_mb_aff_flag);
787
788 }
789 else
790 ps_seq->u1_mb_aff_flag = 0;
791
792 {
793 WORD32 frame_height_in_mbs = (2 - ps_seq->u1_frame_mbs_only_flag)
794 * (pic_height_in_map_units_minus1 + 1);
795 UWORD32 wdth = (ps_seq->u2_frm_wd_in_mbs) << 4;
796 UWORD32 hght = (frame_height_in_mbs) << 4;
797
798 if((u2_pic_wd < H264_MIN_FRAME_WIDTH)
799 || (u2_pic_wd > ps_dec->u4_width_at_init))
800 {
801 ivd_video_decode_op_t *ps_out;
802 /*set width and height in decode output structure*/
803 ps_out = (ivd_video_decode_op_t *)ps_dec->pv_dec_out;
804 ps_out->u4_pic_wd = u2_pic_wd;
805 ps_out->u4_pic_ht = u2_pic_ht;
806
807 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
808 }
809
810 if((u2_pic_ht < H264_MIN_FRAME_HEIGHT)
811 || (((0 != ps_seq->u1_frame_mbs_only_flag)
812 && (u2_pic_ht * u2_pic_wd
813 > ps_dec->u4_height_at_init
814 * ps_dec->u4_width_at_init))
815 || ((0 == ps_seq->u1_frame_mbs_only_flag)
816 && (ALIGN32(u2_pic_ht)
817 * u2_pic_wd
818 > ALIGN32(ps_dec->u4_height_at_init)
819 * ps_dec->u4_width_at_init))))
820 {
821 ivd_video_decode_op_t *ps_out;
822 /*set width and height in decode output structure*/
823 ps_out = (ivd_video_decode_op_t *)ps_dec->pv_dec_out;
824 ps_out->u4_pic_wd = u2_pic_wd;
825 ps_out->u4_pic_ht = u2_pic_ht;
826
827 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
828 }
829
830
831
832
833 }
834
835 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm);
836
837 COPYTHECONTEXT("SPS: direct_8x8_inference_flag",
838 ps_seq->u1_direct_8x8_inference_flag);
839
840 /* G050 */
841 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm);
842 COPYTHECONTEXT("SPS: frame_cropping_flag",u1_frame_cropping_flag);
843
844 if(u1_frame_cropping_flag)
845 {
846 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst,
847 pu4_bitstrm_buf);
848 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset",
849 u1_frame_cropping_rect_left_ofst);
850 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst,
851 pu4_bitstrm_buf);
852 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset",
853 u1_frame_cropping_rect_right_ofst);
854 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst,
855 pu4_bitstrm_buf);
856 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset",
857 u1_frame_cropping_rect_top_ofst);
858 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst,
859 pu4_bitstrm_buf);
860 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset",
861 u1_frame_cropping_rect_bottom_ofst);
862 }
863 /* G050 */
864
865 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
866 COPYTHECONTEXT("SPS: vui_parameters_present_flag",
867 ps_seq->u1_vui_parameters_present_flag);
868
869 u2_frm_wd_y = u2_pic_wd + (UWORD8)(PAD_LEN_Y_H << 1);
870 if(1 == ps_dec->u4_share_disp_buf)
871 {
872 if(ps_dec->u4_app_disp_width > u2_frm_wd_y)
873 u2_frm_wd_y = ps_dec->u4_app_disp_width;
874 }
875
876 u2_frm_ht_y = u2_pic_ht + (UWORD8)(PAD_LEN_Y_V << 2);
877 u2_frm_wd_uv = u2_pic_wd + (UWORD8)(PAD_LEN_UV_H << 2);
878 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y);
879
880 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8)(PAD_LEN_UV_V << 2);
881 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1));
882
883
884 /* Calculate display picture width, height and start u4_ofst from YUV420 */
885 /* pictute buffers as per cropping information parsed above */
886 {
887 UWORD16 u2_rgt_ofst = 0;
888 UWORD16 u2_lft_ofst = 0;
889 UWORD16 u2_top_ofst = 0;
890 UWORD16 u2_btm_ofst = 0;
891 UWORD8 u1_frm_mbs_flag;
892 UWORD8 u1_vert_mult_factor;
893 WORD32 i4_cropped_ht, i4_cropped_wd;
894
895 if(u1_frame_cropping_flag)
896 {
897 /* Calculate right and left u4_ofst for cropped picture */
898 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1;
899 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1;
900
901 /* Know frame MBs only u4_flag */
902 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag);
903
904 /* Simplify the vertical u4_ofst calculation from field/frame */
905 u1_vert_mult_factor = (2 - u1_frm_mbs_flag);
906
907 /* Calculate bottom and top u4_ofst for cropped picture */
908 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst
909 << u1_vert_mult_factor);
910 u2_top_ofst = (u1_frame_cropping_rect_top_ofst
911 << u1_vert_mult_factor);
912 }
913
914 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/
915 /* cropped picture buffer */
916 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst);
917 u2_crop_offset_uv = (u2_frm_wd_uv * (u2_top_ofst >> 1))
918 + (u2_lft_ofst >> 1) * YUV420SP_FACTOR;
919 /* Calculate the display picture width and height based on crop */
920 /* information */
921 i4_cropped_ht = u2_pic_ht - (u2_btm_ofst + u2_top_ofst);
922 i4_cropped_wd = u2_pic_wd - (u2_rgt_ofst + u2_lft_ofst);
923
924 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE))
925 {
926 return ERROR_INV_SPS_PPS_T;
927 }
928
929 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_wd != u2_pic_wd))
930 {
931 ps_dec->u1_res_changed = 1;
932 return IVD_RES_CHANGED;
933 }
934 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_ht != u2_pic_ht))
935 {
936 ps_dec->u1_res_changed = 1;
937 return IVD_RES_CHANGED;
938 }
939
940 ps_dec->u2_disp_height = i4_cropped_ht;
941
942 ps_dec->u2_disp_width = i4_cropped_wd;
943
944 }
945
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]946 if(1 == ps_seq->u1_vui_parameters_present_flag)
947 {
948 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm);
949 if(ret != OK)
950 return ret;
951 }
952
Hamsalekha S8a503282015-07-28 14:41:24 +0530[diff] [blame]953 if(ps_dec->u4_level_at_init < u1_level_idc)
954 {
955 UWORD32 u4_num_pic_bufs_reqd, u4_num_reorder_frames,
956 u4_num_mv_bufs_reqd;
957 UWORD32 u4_num_pic_bufs_memory, u4_num_mv_bufs_memory;
958 UWORD32 u4_num_ref_frames;
959
960 u4_num_ref_frames = ps_seq->u1_num_ref_frames;
961 if(1 == ps_seq->u1_vui_parameters_present_flag)
962 {
963 u4_num_reorder_frames = ps_seq->s_vui.u4_num_reorder_frames;
964 }
965 else
966 {
967 u4_num_reorder_frames = ps_dec->u4_num_reorder_frames_at_init;
968 }
969
970 u4_num_pic_bufs_reqd = u4_num_ref_frames + u4_num_reorder_frames + 1;
971
972 u4_num_pic_bufs_memory = ih264d_get_numbuf_dpb_bank(ps_dec, u2_frm_wd_y,
973 u2_frm_ht_y);
974
975 u4_num_mv_bufs_reqd = u4_num_ref_frames + 1;
976
977 if(u4_num_mv_bufs_reqd < 2)
978 u4_num_mv_bufs_reqd = 2;
979
980 u4_num_mv_bufs_memory = ih264d_get_numbuf_mv_bank(ps_dec, u2_pic_wd,
981 u2_pic_ht);
982
983 if((u4_num_pic_bufs_reqd > u4_num_pic_bufs_memory)
984 || (u4_num_mv_bufs_reqd > u4_num_mv_bufs_memory))
985 {
986 return IH264D_UNSUPPORTED_LEVEL;
987 }
988
989 }
990
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]991 ps_dec->u2_pic_wd = u2_pic_wd;
992 ps_dec->u2_pic_ht = u2_pic_ht;
993
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]994 /* Determining the Width and Height of Frame from that of Picture */
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]995 ps_dec->u2_frm_wd_y = u2_frm_wd_y;
996 ps_dec->u2_frm_ht_y = u2_frm_ht_y;
997
998 ps_dec->u2_frm_wd_uv = u2_frm_wd_uv;
999 ps_dec->u2_frm_ht_uv = u2_frm_ht_uv;
1000 ps_dec->s_pad_mgr.u1_pad_len_y_v = (UWORD8)(PAD_LEN_Y_V << (1 - u1_frm));
1001 ps_dec->s_pad_mgr.u1_pad_len_cr_v = (UWORD8)(PAD_LEN_UV_V << (1 - u1_frm));
1002
1003 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs;
1004 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs;
1005
1006 ps_dec->u2_crop_offset_y = u2_crop_offset_y;
1007 ps_dec->u2_crop_offset_uv = u2_crop_offset_uv;
1008
Harish Mahendrakar2ee0c1b2015-09-18 15:15:50 +0530[diff] [blame^]1009 /* In case bitstream read has exceeded the filled size, then
1010 return an error */
1011 if(ps_bitstrm->u4_ofst > ps_bitstrm->u4_max_ofst)
1012 {
1013 return ERROR_INV_SPS_PPS_T;
1014 }
1015 ps_seq->u1_is_valid = TRUE;
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1016 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq;
1017
1018 return OK;
1019}
1020
1021/*!
1022 **************************************************************************
1023 * \if Function name : ih264d_parse_end_of_sequence \endif
1024 *
1025 * \brief
1026 * Decodes End of Sequence.
1027 *
1028 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
1029 *
1030 * \return
1031 * 0 on Success and error code otherwise
1032 **************************************************************************
1033 */
1034WORD32 ih264d_parse_end_of_sequence(dec_struct_t * ps_dec)
1035{
1036 WORD32 ret;
1037
1038 ret = ih264d_end_of_pic_processing(ps_dec);
1039 return ret;
1040}
1041
1042/*!
1043 **************************************************************************
1044 * \if Function name : AcessUnitDelimiterRbsp \endif
1045 *
1046 * \brief
1047 * Decodes AcessUnitDelimiterRbsp.
1048 *
1049 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
1050 *
1051 * \return
1052 * 0 on Success and error code otherwise
1053 **************************************************************************
1054 */
1055
1056WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec)
1057{
1058 UWORD8 u1_primary_pic_type;
1059 u1_primary_pic_type = ih264d_get_bits_h264(ps_dec->ps_bitstrm, 3);
1060 switch(u1_primary_pic_type)
1061 {
1062 case I_PIC:
1063 case SI_PIC:
1064 case ISI_PIC:
1065 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_I;
1066 break;
1067 default:
1068 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_UNKNOWN;
1069 }
1070 return (0);
1071}
1072/*!
1073 **************************************************************************
1074 * \if Function name : ih264d_parse_nal_unit \endif
1075 *
1076 * \brief
1077 * Decodes NAL unit
1078 *
1079 * \return
1080 * 0 on Success and error code otherwise
1081 **************************************************************************
1082 */
1083
1084WORD32 ih264d_parse_nal_unit(iv_obj_t *dec_hdl,
1085 ivd_video_decode_op_t *ps_dec_op,
1086 UWORD8 *pu1_buf,
1087 UWORD32 u4_length)
1088{
1089
1090 dec_bit_stream_t *ps_bitstrm;
1091
1092
1093 dec_struct_t *ps_dec = (dec_struct_t *)dec_hdl->pv_codec_handle;
1094 ivd_video_decode_ip_t *ps_dec_in =
1095 (ivd_video_decode_ip_t *)ps_dec->pv_dec_in;
1096 dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice;
1097 UWORD8 u1_first_byte, u1_nal_ref_idc;
1098 UWORD8 u1_nal_unit_type;
1099 WORD32 i_status = OK;
1100 ps_bitstrm = ps_dec->ps_bitstrm;
1101
1102 if(pu1_buf)
1103 {
1104 if(u4_length)
1105 {
1106 ps_dec_op->u4_frame_decoded_flag = 0;
1107 ih264d_process_nal_unit(ps_dec->ps_bitstrm, pu1_buf,
1108 u4_length);
1109
1110 SWITCHOFFTRACE;
1111 u1_first_byte = ih264d_get_bits_h264(ps_bitstrm, 8);
1112
1113 if(NAL_FORBIDDEN_BIT(u1_first_byte))
1114 {
1115 H264_DEC_DEBUG_PRINT("\nForbidden bit set in Nal Unit, Let's try\n");
1116 }
1117 u1_nal_unit_type = NAL_UNIT_TYPE(u1_first_byte);
1118 ps_dec->u1_nal_unit_type = u1_nal_unit_type;
1119 u1_nal_ref_idc = (UWORD8)(NAL_REF_IDC(u1_first_byte));
1120 //Skip all NALUs if SPS and PPS are not decoded
1121 switch(u1_nal_unit_type)
1122 {
1123 case SLICE_DATA_PARTITION_A_NAL:
1124 case SLICE_DATA_PARTITION_B_NAL:
1125 case SLICE_DATA_PARTITION_C_NAL:
1126 if(!ps_dec->i4_decode_header)
1127 ih264d_parse_slice_partition(ps_dec, ps_bitstrm);
1128
1129 break;
1130
1131 case IDR_SLICE_NAL:
1132 case SLICE_NAL:
1133
1134 /* ! */
1135 DEBUG_THREADS_PRINTF("Decoding a slice NAL\n");
1136 if(!ps_dec->i4_decode_header)
1137 {
1138 if(ps_dec->i4_header_decoded == 3)
1139 {
1140 /* ! */
1141 ps_dec->u4_slice_start_code_found = 1;
1142
1143 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1144
1145 i_status = ih264d_parse_decode_slice(
1146 (UWORD8)(u1_nal_unit_type
1147 == IDR_SLICE_NAL),
1148 u1_nal_ref_idc, ps_dec);
1149
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1150 if((ps_dec->u4_first_slice_in_pic != 0)&&
1151 ((ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC) == 0))
1152 {
1153 /* if the first slice header was not valid set to 1 */
1154 ps_dec->u4_first_slice_in_pic = 1;
1155 }
1156
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1157 if(i_status != OK)
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1158 {
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1159 return i_status;
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1160 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1161 }
1162 else
1163 {
1164 H264_DEC_DEBUG_PRINT(
1165 "\nSlice NAL Supplied but no header has been supplied\n");
1166 }
1167 }
1168 break;
1169
1170 case SEI_NAL:
1171 if(!ps_dec->i4_decode_header)
1172 {
1173 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1174 i_status = ih264d_parse_sei_message(ps_dec, ps_bitstrm);
1175 if(i_status != OK)
1176 return i_status;
1177 ih264d_parse_sei(ps_dec, ps_bitstrm);
1178 }
1179 break;
1180 case SEQ_PARAM_NAL:
1181 /* ! */
1182 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1183 i_status = ih264d_parse_sps(ps_dec, ps_bitstrm);
1184 if(i_status == ERROR_INV_SPS_PPS_T)
1185 return i_status;
1186 if(!i_status)
1187 ps_dec->i4_header_decoded |= 0x1;
1188 break;
1189
1190 case PIC_PARAM_NAL:
1191 /* ! */
1192 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1193 i_status = ih264d_parse_pps(ps_dec, ps_bitstrm);
1194 if(i_status == ERROR_INV_SPS_PPS_T)
1195 return i_status;
1196 if(!i_status)
1197 ps_dec->i4_header_decoded |= 0x2;
1198 break;
1199 case ACCESS_UNIT_DELIMITER_RBSP:
1200 if(!ps_dec->i4_decode_header)
1201 {
1202 ih264d_access_unit_delimiter_rbsp(ps_dec);
1203 }
1204 break;
1205 //Let us ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL
1206 case END_OF_STREAM_RBSP:
1207 if(!ps_dec->i4_decode_header)
1208 {
1209 ih264d_parse_end_of_stream(ps_dec);
1210 }
1211 break;
1212 case FILLER_DATA_NAL:
1213 if(!ps_dec->i4_decode_header)
1214 {
1215 ih264d_parse_filler_data(ps_dec, ps_bitstrm);
1216 }
1217 break;
1218 default:
1219 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type);
1220 break;
1221 }
1222
1223 }
1224
1225 }
1226
1227 return i_status;
1228
1229}
1230