Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / libavc / d7eee555dc124a4ab7977f073c6b4a76c346f760 / . / decoder / ih264d_parse_headers.c
blob: 3f1dcad704cc9680e1cac65d048a2ebc9d197f35 [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
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];
566 ps_seq->u1_profile_idc = u1_profile_idc;
567 ps_seq->u1_level_idc = u1_level_idc;
568 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id;
569
570 /*******************************************************************/
571 /* Initializations for high profile - Sushant */
572 /*******************************************************************/
573 ps_seq->i4_chroma_format_idc = 1;
574 ps_seq->i4_bit_depth_luma_minus8 = 0;
575 ps_seq->i4_bit_depth_chroma_minus8 = 0;
576 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0;
577 ps_seq->i4_seq_scaling_matrix_present_flag = 0;
578 if(u1_profile_idc == HIGH_PROFILE_IDC)
579 {
580
581 /* reading chroma_format_idc */
582 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst,
583 pu4_bitstrm_buf);
584
585 /* Monochrome is not supported */
586 if(ps_seq->i4_chroma_format_idc != 1)
587 {
588 return ERROR_INV_SPS_PPS_T;
589 }
590
591 /* reading bit_depth_luma_minus8 */
592 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
593 pu4_bitstrm_buf);
594
595 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
596 {
597 return ERROR_INV_SPS_PPS_T;
598 }
599
600 /* reading bit_depth_chroma_minus8 */
601 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
602 pu4_bitstrm_buf);
603
604 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
605 {
606 return ERROR_INV_SPS_PPS_T;
607 }
608
609 /* reading qpprime_y_zero_transform_bypass_flag */
610 ps_seq->i4_qpprime_y_zero_transform_bypass_flag =
611 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
612
613 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
614 {
615 return ERROR_INV_SPS_PPS_T;
616 }
617
618 /* reading seq_scaling_matrix_present_flag */
619 ps_seq->i4_seq_scaling_matrix_present_flag =
620 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
621
622 if(ps_seq->i4_seq_scaling_matrix_present_flag)
623 {
624 for(i4_i = 0; i4_i < 8; i4_i++)
625 {
626 ps_seq->u1_seq_scaling_list_present_flag[i4_i] =
627 ih264d_get_bit_h264(ps_bitstrm);
628
629 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */
630 /* before calling scaling list */
631 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0;
632
633 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i])
634 {
635 if(i4_i < 6)
636 {
637 ih264d_scaling_list(
638 ps_seq->i2_scalinglist4x4[i4_i],
639 16,
640 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
641 ps_bitstrm);
642 }
643 else
644 {
645 ih264d_scaling_list(
646 ps_seq->i2_scalinglist8x8[i4_i - 6],
647 64,
648 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
649 ps_bitstrm);
650 }
651 }
652 }
653 }
654 }
655 /*--------------------------------------------------------------------*/
656 /* Decode MaxFrameNum */
657 /*--------------------------------------------------------------------*/
658 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
659 if(u4_temp > MAX_BITS_IN_FRAME_NUM)
660 {
661 return ERROR_INV_SPS_PPS_T;
662 }
663 ps_seq->u1_bits_in_frm_num = u4_temp;
664 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4",
665 (ps_seq->u1_bits_in_frm_num - 4));
666
667 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num));
668 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1;
669 /*--------------------------------------------------------------------*/
670 /* Decode picture order count and related values */
671 /*--------------------------------------------------------------------*/
672 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
673
674 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE)
675 {
676 return ERROR_INV_POC_TYPE_T;
677 }
678 ps_seq->u1_pic_order_cnt_type = u4_temp;
679 COPYTHECONTEXT("SPS: pic_order_cnt_type",ps_seq->u1_pic_order_cnt_type);
680
681 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1;
682 if(ps_seq->u1_pic_order_cnt_type == 0)
683 {
684 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
685 if(u4_temp > MAX_BITS_IN_POC_LSB)
686 {
687 return ERROR_INV_SPS_PPS_T;
688 }
689 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = u4_temp;
690 ps_seq->i4_max_pic_order_cntLsb = (1 << u4_temp);
691 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4",(u4_temp - 4));
692 }
693 else if(ps_seq->u1_pic_order_cnt_type == 1)
694 {
695 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264(
696 ps_bitstrm);
697 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag",
698 ps_seq->u1_delta_pic_order_always_zero_flag);
699
700 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst,
701 pu4_bitstrm_buf);
702 COPYTHECONTEXT("SPS: offset_for_non_ref_pic",
703 ps_seq->i4_ofst_for_non_ref_pic);
704
705 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev(
706 pu4_bitstrm_ofst, pu4_bitstrm_buf);
707 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field",
708 ps_seq->i4_ofst_for_top_to_bottom_field);
709
710 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
711 if(u4_temp > 255)
712 return ERROR_INV_SPS_PPS_T;
713 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp;
714 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle",
715 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle);
716
717 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++)
718 {
719 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev(
720 pu4_bitstrm_ofst, pu4_bitstrm_buf);
721 COPYTHECONTEXT("SPS: offset_for_ref_frame",
722 ps_seq->i4_ofst_for_ref_frame[i]);
723 }
724 }
725
726 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
727
728 if((u4_temp > H264_MAX_REF_PICS))
729 {
730 return ERROR_NUM_REF;
731 }
732 ps_seq->u1_num_ref_frames = u4_temp;
Hamsalekha S8a503282015-07-28 14:41:24 +0530[diff] [blame]733
734 if(ps_seq->u1_num_ref_frames > ps_dec->u4_num_ref_frames_at_init)
735 {
736 return IH264D_UNSUPPORTED_NUM_REF_FRAMES;
737 }
738
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]739 COPYTHECONTEXT("SPS: num_ref_frames",ps_seq->u1_num_ref_frames);
740
741 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264(
742 ps_bitstrm);
743 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag",
744 ps_seq->u1_gaps_in_frame_num_value_allowed_flag);
745
746 /*--------------------------------------------------------------------*/
747 /* Decode FrameWidth and FrameHeight and related values */
748 /*--------------------------------------------------------------------*/
749 ps_seq->u2_frm_wd_in_mbs = 1
750 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
751 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1",
752 ps_seq->u2_frm_wd_in_mbs - 1);
753 u2_pic_wd = (ps_seq->u2_frm_wd_in_mbs << 4);
754
755 pic_height_in_map_units_minus1 = ih264d_uev(pu4_bitstrm_ofst,
756 pu4_bitstrm_buf);
757 ps_seq->u2_frm_ht_in_mbs = 1 + pic_height_in_map_units_minus1;
758
759 u2_pic_ht = (ps_seq->u2_frm_ht_in_mbs << 4);
760
761 /*--------------------------------------------------------------------*/
762 /* Get the value of MaxMbAddress and Number of bits needed for it */
763 /*--------------------------------------------------------------------*/
764 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs
765 * ps_seq->u2_frm_ht_in_mbs) - 1;
766
767 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1;
768
769 ps_seq->u1_level_idc = ih264d_correct_level_idc(
770 u1_level_idc, ps_seq->u2_total_num_of_mbs);
771
772 u1_frm = ih264d_get_bit_h264(ps_bitstrm);
773 ps_seq->u1_frame_mbs_only_flag = u1_frm;
774
775 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm);
776
777 if(!u1_frm)
778 {
779 u2_pic_ht <<= 1;
780 ps_seq->u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm);
781 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag",
782 ps_seq->u1_mb_aff_flag);
783
784 }
785 else
786 ps_seq->u1_mb_aff_flag = 0;
787
788 {
789 WORD32 frame_height_in_mbs = (2 - ps_seq->u1_frame_mbs_only_flag)
790 * (pic_height_in_map_units_minus1 + 1);
791 UWORD32 wdth = (ps_seq->u2_frm_wd_in_mbs) << 4;
792 UWORD32 hght = (frame_height_in_mbs) << 4;
793
794 if((u2_pic_wd < H264_MIN_FRAME_WIDTH)
795 || (u2_pic_wd > ps_dec->u4_width_at_init))
796 {
797 ivd_video_decode_op_t *ps_out;
798 /*set width and height in decode output structure*/
799 ps_out = (ivd_video_decode_op_t *)ps_dec->pv_dec_out;
800 ps_out->u4_pic_wd = u2_pic_wd;
801 ps_out->u4_pic_ht = u2_pic_ht;
802
803 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
804 }
805
806 if((u2_pic_ht < H264_MIN_FRAME_HEIGHT)
807 || (((0 != ps_seq->u1_frame_mbs_only_flag)
808 && (u2_pic_ht * u2_pic_wd
809 > ps_dec->u4_height_at_init
810 * ps_dec->u4_width_at_init))
811 || ((0 == ps_seq->u1_frame_mbs_only_flag)
812 && (ALIGN32(u2_pic_ht)
813 * u2_pic_wd
814 > ALIGN32(ps_dec->u4_height_at_init)
815 * ps_dec->u4_width_at_init))))
816 {
817 ivd_video_decode_op_t *ps_out;
818 /*set width and height in decode output structure*/
819 ps_out = (ivd_video_decode_op_t *)ps_dec->pv_dec_out;
820 ps_out->u4_pic_wd = u2_pic_wd;
821 ps_out->u4_pic_ht = u2_pic_ht;
822
823 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
824 }
825
826
827
828
829 }
830
831 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm);
832
833 COPYTHECONTEXT("SPS: direct_8x8_inference_flag",
834 ps_seq->u1_direct_8x8_inference_flag);
835
836 /* G050 */
837 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm);
838 COPYTHECONTEXT("SPS: frame_cropping_flag",u1_frame_cropping_flag);
839
840 if(u1_frame_cropping_flag)
841 {
842 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst,
843 pu4_bitstrm_buf);
844 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset",
845 u1_frame_cropping_rect_left_ofst);
846 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst,
847 pu4_bitstrm_buf);
848 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset",
849 u1_frame_cropping_rect_right_ofst);
850 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst,
851 pu4_bitstrm_buf);
852 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset",
853 u1_frame_cropping_rect_top_ofst);
854 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst,
855 pu4_bitstrm_buf);
856 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset",
857 u1_frame_cropping_rect_bottom_ofst);
858 }
859 /* G050 */
860
861 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
862 COPYTHECONTEXT("SPS: vui_parameters_present_flag",
863 ps_seq->u1_vui_parameters_present_flag);
864
865 u2_frm_wd_y = u2_pic_wd + (UWORD8)(PAD_LEN_Y_H << 1);
866 if(1 == ps_dec->u4_share_disp_buf)
867 {
868 if(ps_dec->u4_app_disp_width > u2_frm_wd_y)
869 u2_frm_wd_y = ps_dec->u4_app_disp_width;
870 }
871
872 u2_frm_ht_y = u2_pic_ht + (UWORD8)(PAD_LEN_Y_V << 2);
873 u2_frm_wd_uv = u2_pic_wd + (UWORD8)(PAD_LEN_UV_H << 2);
874 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y);
875
876 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8)(PAD_LEN_UV_V << 2);
877 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1));
878
879
880 /* Calculate display picture width, height and start u4_ofst from YUV420 */
881 /* pictute buffers as per cropping information parsed above */
882 {
883 UWORD16 u2_rgt_ofst = 0;
884 UWORD16 u2_lft_ofst = 0;
885 UWORD16 u2_top_ofst = 0;
886 UWORD16 u2_btm_ofst = 0;
887 UWORD8 u1_frm_mbs_flag;
888 UWORD8 u1_vert_mult_factor;
889 WORD32 i4_cropped_ht, i4_cropped_wd;
890
891 if(u1_frame_cropping_flag)
892 {
893 /* Calculate right and left u4_ofst for cropped picture */
894 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1;
895 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1;
896
897 /* Know frame MBs only u4_flag */
898 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag);
899
900 /* Simplify the vertical u4_ofst calculation from field/frame */
901 u1_vert_mult_factor = (2 - u1_frm_mbs_flag);
902
903 /* Calculate bottom and top u4_ofst for cropped picture */
904 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst
905 << u1_vert_mult_factor);
906 u2_top_ofst = (u1_frame_cropping_rect_top_ofst
907 << u1_vert_mult_factor);
908 }
909
910 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/
911 /* cropped picture buffer */
912 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst);
913 u2_crop_offset_uv = (u2_frm_wd_uv * (u2_top_ofst >> 1))
914 + (u2_lft_ofst >> 1) * YUV420SP_FACTOR;
915 /* Calculate the display picture width and height based on crop */
916 /* information */
917 i4_cropped_ht = u2_pic_ht - (u2_btm_ofst + u2_top_ofst);
918 i4_cropped_wd = u2_pic_wd - (u2_rgt_ofst + u2_lft_ofst);
919
920 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE))
921 {
922 return ERROR_INV_SPS_PPS_T;
923 }
924
925 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_wd != u2_pic_wd))
926 {
927 ps_dec->u1_res_changed = 1;
928 return IVD_RES_CHANGED;
929 }
930 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_ht != u2_pic_ht))
931 {
932 ps_dec->u1_res_changed = 1;
933 return IVD_RES_CHANGED;
934 }
935
936 ps_dec->u2_disp_height = i4_cropped_ht;
937
938 ps_dec->u2_disp_width = i4_cropped_wd;
939
940 }
941
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]942 if(1 == ps_seq->u1_vui_parameters_present_flag)
943 {
944 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm);
945 if(ret != OK)
946 return ret;
947 }
948
Hamsalekha S8a503282015-07-28 14:41:24 +0530[diff] [blame]949 if(ps_dec->u4_level_at_init < u1_level_idc)
950 {
951 UWORD32 u4_num_pic_bufs_reqd, u4_num_reorder_frames,
952 u4_num_mv_bufs_reqd;
953 UWORD32 u4_num_pic_bufs_memory, u4_num_mv_bufs_memory;
954 UWORD32 u4_num_ref_frames;
955
956 u4_num_ref_frames = ps_seq->u1_num_ref_frames;
957 if(1 == ps_seq->u1_vui_parameters_present_flag)
958 {
959 u4_num_reorder_frames = ps_seq->s_vui.u4_num_reorder_frames;
960 }
961 else
962 {
963 u4_num_reorder_frames = ps_dec->u4_num_reorder_frames_at_init;
964 }
965
966 u4_num_pic_bufs_reqd = u4_num_ref_frames + u4_num_reorder_frames + 1;
967
968 u4_num_pic_bufs_memory = ih264d_get_numbuf_dpb_bank(ps_dec, u2_frm_wd_y,
969 u2_frm_ht_y);
970
971 u4_num_mv_bufs_reqd = u4_num_ref_frames + 1;
972
973 if(u4_num_mv_bufs_reqd < 2)
974 u4_num_mv_bufs_reqd = 2;
975
976 u4_num_mv_bufs_memory = ih264d_get_numbuf_mv_bank(ps_dec, u2_pic_wd,
977 u2_pic_ht);
978
979 if((u4_num_pic_bufs_reqd > u4_num_pic_bufs_memory)
980 || (u4_num_mv_bufs_reqd > u4_num_mv_bufs_memory))
981 {
982 return IH264D_UNSUPPORTED_LEVEL;
983 }
984
985 }
986
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]987 ps_dec->u2_pic_wd = u2_pic_wd;
988 ps_dec->u2_pic_ht = u2_pic_ht;
989
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]990 /* Determining the Width and Height of Frame from that of Picture */
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]991 ps_dec->u2_frm_wd_y = u2_frm_wd_y;
992 ps_dec->u2_frm_ht_y = u2_frm_ht_y;
993
994 ps_dec->u2_frm_wd_uv = u2_frm_wd_uv;
995 ps_dec->u2_frm_ht_uv = u2_frm_ht_uv;
996 ps_dec->s_pad_mgr.u1_pad_len_y_v = (UWORD8)(PAD_LEN_Y_V << (1 - u1_frm));
997 ps_dec->s_pad_mgr.u1_pad_len_cr_v = (UWORD8)(PAD_LEN_UV_V << (1 - u1_frm));
998
999 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs;
1000 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs;
1001
1002 ps_dec->u2_crop_offset_y = u2_crop_offset_y;
1003 ps_dec->u2_crop_offset_uv = u2_crop_offset_uv;
1004
Harish Mahendrakar2ee0c1b2015-09-18 15:15:50 +0530[diff] [blame]1005 /* In case bitstream read has exceeded the filled size, then
1006 return an error */
1007 if(ps_bitstrm->u4_ofst > ps_bitstrm->u4_max_ofst)
1008 {
1009 return ERROR_INV_SPS_PPS_T;
1010 }
1011 ps_seq->u1_is_valid = TRUE;
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1012 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq;
1013
1014 return OK;
1015}
1016
1017/*!
1018 **************************************************************************
1019 * \if Function name : ih264d_parse_end_of_sequence \endif
1020 *
1021 * \brief
1022 * Decodes End of Sequence.
1023 *
1024 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
1025 *
1026 * \return
1027 * 0 on Success and error code otherwise
1028 **************************************************************************
1029 */
1030WORD32 ih264d_parse_end_of_sequence(dec_struct_t * ps_dec)
1031{
1032 WORD32 ret;
1033
1034 ret = ih264d_end_of_pic_processing(ps_dec);
1035 return ret;
1036}
1037
1038/*!
1039 **************************************************************************
1040 * \if Function name : AcessUnitDelimiterRbsp \endif
1041 *
1042 * \brief
1043 * Decodes AcessUnitDelimiterRbsp.
1044 *
1045 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
1046 *
1047 * \return
1048 * 0 on Success and error code otherwise
1049 **************************************************************************
1050 */
1051
1052WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec)
1053{
1054 UWORD8 u1_primary_pic_type;
1055 u1_primary_pic_type = ih264d_get_bits_h264(ps_dec->ps_bitstrm, 3);
1056 switch(u1_primary_pic_type)
1057 {
1058 case I_PIC:
1059 case SI_PIC:
1060 case ISI_PIC:
1061 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_I;
1062 break;
1063 default:
1064 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_UNKNOWN;
1065 }
1066 return (0);
1067}
1068/*!
1069 **************************************************************************
1070 * \if Function name : ih264d_parse_nal_unit \endif
1071 *
1072 * \brief
1073 * Decodes NAL unit
1074 *
1075 * \return
1076 * 0 on Success and error code otherwise
1077 **************************************************************************
1078 */
1079
1080WORD32 ih264d_parse_nal_unit(iv_obj_t *dec_hdl,
1081 ivd_video_decode_op_t *ps_dec_op,
1082 UWORD8 *pu1_buf,
1083 UWORD32 u4_length)
1084{
1085
1086 dec_bit_stream_t *ps_bitstrm;
1087
1088
1089 dec_struct_t *ps_dec = (dec_struct_t *)dec_hdl->pv_codec_handle;
1090 ivd_video_decode_ip_t *ps_dec_in =
1091 (ivd_video_decode_ip_t *)ps_dec->pv_dec_in;
1092 dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice;
1093 UWORD8 u1_first_byte, u1_nal_ref_idc;
1094 UWORD8 u1_nal_unit_type;
1095 WORD32 i_status = OK;
1096 ps_bitstrm = ps_dec->ps_bitstrm;
1097
1098 if(pu1_buf)
1099 {
1100 if(u4_length)
1101 {
1102 ps_dec_op->u4_frame_decoded_flag = 0;
1103 ih264d_process_nal_unit(ps_dec->ps_bitstrm, pu1_buf,
1104 u4_length);
1105
1106 SWITCHOFFTRACE;
1107 u1_first_byte = ih264d_get_bits_h264(ps_bitstrm, 8);
1108
1109 if(NAL_FORBIDDEN_BIT(u1_first_byte))
1110 {
1111 H264_DEC_DEBUG_PRINT("\nForbidden bit set in Nal Unit, Let's try\n");
1112 }
1113 u1_nal_unit_type = NAL_UNIT_TYPE(u1_first_byte);
Harish Mahendrakar5e4f64c2016-06-01 13:31:45 +0530[diff] [blame]1114 // if any other nal unit other than slice nal is encountered in between a
1115 // frame break out of loop without consuming header
1116 if((ps_dec->u2_total_mbs_coded != 0) && (u1_nal_unit_type > IDR_SLICE_NAL))
1117 {
1118 return ERROR_INCOMPLETE_FRAME;
1119 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1120 ps_dec->u1_nal_unit_type = u1_nal_unit_type;
1121 u1_nal_ref_idc = (UWORD8)(NAL_REF_IDC(u1_first_byte));
1122 //Skip all NALUs if SPS and PPS are not decoded
1123 switch(u1_nal_unit_type)
1124 {
1125 case SLICE_DATA_PARTITION_A_NAL:
1126 case SLICE_DATA_PARTITION_B_NAL:
1127 case SLICE_DATA_PARTITION_C_NAL:
1128 if(!ps_dec->i4_decode_header)
1129 ih264d_parse_slice_partition(ps_dec, ps_bitstrm);
1130
1131 break;
1132
1133 case IDR_SLICE_NAL:
1134 case SLICE_NAL:
1135
1136 /* ! */
1137 DEBUG_THREADS_PRINTF("Decoding a slice NAL\n");
1138 if(!ps_dec->i4_decode_header)
1139 {
1140 if(ps_dec->i4_header_decoded == 3)
1141 {
1142 /* ! */
1143 ps_dec->u4_slice_start_code_found = 1;
1144
1145 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1146
1147 i_status = ih264d_parse_decode_slice(
1148 (UWORD8)(u1_nal_unit_type
1149 == IDR_SLICE_NAL),
1150 u1_nal_ref_idc, ps_dec);
1151
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1152 if((ps_dec->u4_first_slice_in_pic != 0)&&
1153 ((ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC) == 0))
1154 {
1155 /* if the first slice header was not valid set to 1 */
1156 ps_dec->u4_first_slice_in_pic = 1;
1157 }
1158
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1159 if(i_status != OK)
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1160 {
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1161 return i_status;
Hamsalekha S9f0dcba2015-06-09 15:54:31 +0530[diff] [blame]1162 }
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1163 }
1164 else
1165 {
1166 H264_DEC_DEBUG_PRINT(
1167 "\nSlice NAL Supplied but no header has been supplied\n");
1168 }
1169 }
1170 break;
1171
1172 case SEI_NAL:
1173 if(!ps_dec->i4_decode_header)
1174 {
1175 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1176 i_status = ih264d_parse_sei_message(ps_dec, ps_bitstrm);
1177 if(i_status != OK)
1178 return i_status;
1179 ih264d_parse_sei(ps_dec, ps_bitstrm);
1180 }
1181 break;
1182 case SEQ_PARAM_NAL:
1183 /* ! */
1184 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1185 i_status = ih264d_parse_sps(ps_dec, ps_bitstrm);
1186 if(i_status == ERROR_INV_SPS_PPS_T)
1187 return i_status;
1188 if(!i_status)
1189 ps_dec->i4_header_decoded |= 0x1;
1190 break;
1191
1192 case PIC_PARAM_NAL:
1193 /* ! */
1194 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1195 i_status = ih264d_parse_pps(ps_dec, ps_bitstrm);
1196 if(i_status == ERROR_INV_SPS_PPS_T)
1197 return i_status;
1198 if(!i_status)
1199 ps_dec->i4_header_decoded |= 0x2;
1200 break;
1201 case ACCESS_UNIT_DELIMITER_RBSP:
1202 if(!ps_dec->i4_decode_header)
1203 {
1204 ih264d_access_unit_delimiter_rbsp(ps_dec);
1205 }
1206 break;
1207 //Let us ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL
1208 case END_OF_STREAM_RBSP:
1209 if(!ps_dec->i4_decode_header)
1210 {
1211 ih264d_parse_end_of_stream(ps_dec);
1212 }
1213 break;
1214 case FILLER_DATA_NAL:
1215 if(!ps_dec->i4_decode_header)
1216 {
1217 ih264d_parse_filler_data(ps_dec, ps_bitstrm);
1218 }
1219 break;
1220 default:
1221 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type);
1222 break;
1223 }
1224
1225 }
1226
1227 }
1228
1229 return i_status;
1230
1231}
1232