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"
59 #include "ih264d.h"
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
ih264d_parse_slice_partition(dec_struct_t * ps_dec,dec_bit_stream_t * ps_bitstrm)84 WORD32 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 /*****************************************************************************/
ih264d_parse_sei(dec_struct_t * ps_dec,dec_bit_stream_t * ps_bitstrm)115 WORD32 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 /*****************************************************************************/
ih264d_parse_filler_data(dec_struct_t * ps_dec,dec_bit_stream_t * ps_bitstrm)144 WORD32 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 /*****************************************************************************/
ih264d_parse_end_of_stream(dec_struct_t * ps_dec)173 void 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 */
ih264d_parse_pps(dec_struct_t * ps_dec,dec_bit_stream_t * ps_bitstrm)190 WORD32 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 */
336 for(i4_i = 0; i4_i < (6 + (ps_pps->i4_transform_8x8_mode_flag << 1)); i4_i++)
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
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 }
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 */
ih264d_correct_level_idc(UWORD32 u4_level_idc,UWORD32 u4_total_mbs)393 UWORD32 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 }
ih264d_parse_sps(dec_struct_t * ps_dec,dec_bit_stream_t * ps_bitstrm)476 WORD32 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
553
554
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
571 if(NULL == ps_dec->ps_cur_sps)
572 ps_dec->ps_cur_sps = ps_seq;
573
574 ps_seq->u1_profile_idc = u1_profile_idc;
575 ps_seq->u1_level_idc = u1_level_idc;
576 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id;
577
578 /*******************************************************************/
579 /* Initializations for high profile - Sushant */
580 /*******************************************************************/
581 ps_seq->i4_chroma_format_idc = 1;
582 ps_seq->i4_bit_depth_luma_minus8 = 0;
583 ps_seq->i4_bit_depth_chroma_minus8 = 0;
584 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0;
585 ps_seq->i4_seq_scaling_matrix_present_flag = 0;
586 if(u1_profile_idc == HIGH_PROFILE_IDC)
587 {
588
589 /* reading chroma_format_idc */
590 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst,
591 pu4_bitstrm_buf);
592
593 /* Monochrome is not supported */
594 if(ps_seq->i4_chroma_format_idc != 1)
595 {
596 return ERROR_INV_SPS_PPS_T;
597 }
598
599 /* reading bit_depth_luma_minus8 */
600 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
601 pu4_bitstrm_buf);
602
603 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
604 {
605 return ERROR_INV_SPS_PPS_T;
606 }
607
608 /* reading bit_depth_chroma_minus8 */
609 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst,
610 pu4_bitstrm_buf);
611
612 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
613 {
614 return ERROR_INV_SPS_PPS_T;
615 }
616
617 /* reading qpprime_y_zero_transform_bypass_flag */
618 ps_seq->i4_qpprime_y_zero_transform_bypass_flag =
619 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
620
621 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
622 {
623 return ERROR_INV_SPS_PPS_T;
624 }
625
626 /* reading seq_scaling_matrix_present_flag */
627 ps_seq->i4_seq_scaling_matrix_present_flag =
628 (WORD32)ih264d_get_bit_h264(ps_bitstrm);
629
630 if(ps_seq->i4_seq_scaling_matrix_present_flag)
631 {
632 for(i4_i = 0; i4_i < 8; i4_i++)
633 {
634 ps_seq->u1_seq_scaling_list_present_flag[i4_i] =
635 ih264d_get_bit_h264(ps_bitstrm);
636
637 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */
638 /* before calling scaling list */
639 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0;
640
641 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i])
642 {
643 if(i4_i < 6)
644 {
645 ih264d_scaling_list(
646 ps_seq->i2_scalinglist4x4[i4_i],
647 16,
648 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
649 ps_bitstrm);
650 }
651 else
652 {
653 ih264d_scaling_list(
654 ps_seq->i2_scalinglist8x8[i4_i - 6],
655 64,
656 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
657 ps_bitstrm);
658 }
659 }
660 }
661 }
662 }
663 /*--------------------------------------------------------------------*/
664 /* Decode MaxFrameNum */
665 /*--------------------------------------------------------------------*/
666 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
667 if(u4_temp > MAX_BITS_IN_FRAME_NUM)
668 {
669 return ERROR_INV_SPS_PPS_T;
670 }
671 ps_seq->u1_bits_in_frm_num = u4_temp;
672 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4",
673 (ps_seq->u1_bits_in_frm_num - 4));
674
675 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num));
676 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1;
677 /*--------------------------------------------------------------------*/
678 /* Decode picture order count and related values */
679 /*--------------------------------------------------------------------*/
680 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
681
682 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE)
683 {
684 return ERROR_INV_POC_TYPE_T;
685 }
686 ps_seq->u1_pic_order_cnt_type = u4_temp;
687 COPYTHECONTEXT("SPS: pic_order_cnt_type",ps_seq->u1_pic_order_cnt_type);
688
689 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1;
690 if(ps_seq->u1_pic_order_cnt_type == 0)
691 {
692 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
693 if(u4_temp > MAX_BITS_IN_POC_LSB)
694 {
695 return ERROR_INV_SPS_PPS_T;
696 }
697 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = u4_temp;
698 ps_seq->i4_max_pic_order_cntLsb = (1 << u4_temp);
699 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4",(u4_temp - 4));
700 }
701 else if(ps_seq->u1_pic_order_cnt_type == 1)
702 {
703 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264(
704 ps_bitstrm);
705 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag",
706 ps_seq->u1_delta_pic_order_always_zero_flag);
707
708 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst,
709 pu4_bitstrm_buf);
710 COPYTHECONTEXT("SPS: offset_for_non_ref_pic",
711 ps_seq->i4_ofst_for_non_ref_pic);
712
713 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev(
714 pu4_bitstrm_ofst, pu4_bitstrm_buf);
715 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field",
716 ps_seq->i4_ofst_for_top_to_bottom_field);
717
718 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
719 if(u4_temp > 255)
720 return ERROR_INV_SPS_PPS_T;
721 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp;
722 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle",
723 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle);
724
725 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++)
726 {
727 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev(
728 pu4_bitstrm_ofst, pu4_bitstrm_buf);
729 COPYTHECONTEXT("SPS: offset_for_ref_frame",
730 ps_seq->i4_ofst_for_ref_frame[i]);
731 }
732 }
733
734 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
735
736 if((u4_temp > H264_MAX_REF_PICS))
737 {
738 return ERROR_NUM_REF;
739 }
740 ps_seq->u1_num_ref_frames = u4_temp;
741 COPYTHECONTEXT("SPS: num_ref_frames",ps_seq->u1_num_ref_frames);
742
743 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264(
744 ps_bitstrm);
745 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag",
746 ps_seq->u1_gaps_in_frame_num_value_allowed_flag);
747
748 /*--------------------------------------------------------------------*/
749 /* Decode FrameWidth and FrameHeight and related values */
750 /*--------------------------------------------------------------------*/
751 ps_seq->u2_frm_wd_in_mbs = 1
752 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
753 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1",
754 ps_seq->u2_frm_wd_in_mbs - 1);
755 u2_pic_wd = (ps_seq->u2_frm_wd_in_mbs << 4);
756
757 pic_height_in_map_units_minus1 = ih264d_uev(pu4_bitstrm_ofst,
758 pu4_bitstrm_buf);
759 ps_seq->u2_frm_ht_in_mbs = 1 + pic_height_in_map_units_minus1;
760
761 u2_pic_ht = (ps_seq->u2_frm_ht_in_mbs << 4);
762
763 /*--------------------------------------------------------------------*/
764 /* Get the value of MaxMbAddress and Number of bits needed for it */
765 /*--------------------------------------------------------------------*/
766 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs
767 * ps_seq->u2_frm_ht_in_mbs) - 1;
768
769 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1;
770
771 ps_seq->u1_level_idc = ih264d_correct_level_idc(
772 u1_level_idc, ps_seq->u2_total_num_of_mbs);
773
774 u1_frm = ih264d_get_bit_h264(ps_bitstrm);
775 ps_seq->u1_frame_mbs_only_flag = u1_frm;
776
777 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm);
778
779 if(!u1_frm)
780 {
781 u2_pic_ht <<= 1;
782 ps_seq->u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm);
783 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag",
784 ps_seq->u1_mb_aff_flag);
785
786 }
787 else
788 ps_seq->u1_mb_aff_flag = 0;
789
790 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm);
791
792 COPYTHECONTEXT("SPS: direct_8x8_inference_flag",
793 ps_seq->u1_direct_8x8_inference_flag);
794
795 /* G050 */
796 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm);
797 COPYTHECONTEXT("SPS: frame_cropping_flag",u1_frame_cropping_flag);
798
799 if(u1_frame_cropping_flag)
800 {
801 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst,
802 pu4_bitstrm_buf);
803 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset",
804 u1_frame_cropping_rect_left_ofst);
805 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst,
806 pu4_bitstrm_buf);
807 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset",
808 u1_frame_cropping_rect_right_ofst);
809 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst,
810 pu4_bitstrm_buf);
811 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset",
812 u1_frame_cropping_rect_top_ofst);
813 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst,
814 pu4_bitstrm_buf);
815 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset",
816 u1_frame_cropping_rect_bottom_ofst);
817 }
818 /* G050 */
819
820 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
821 COPYTHECONTEXT("SPS: vui_parameters_present_flag",
822 ps_seq->u1_vui_parameters_present_flag);
823
824 u2_frm_wd_y = u2_pic_wd + (UWORD8)(PAD_LEN_Y_H << 1);
825 if(1 == ps_dec->u4_share_disp_buf)
826 {
827 if(ps_dec->u4_app_disp_width > u2_frm_wd_y)
828 u2_frm_wd_y = ps_dec->u4_app_disp_width;
829 }
830
831 u2_frm_ht_y = u2_pic_ht + (UWORD8)(PAD_LEN_Y_V << 2);
832 u2_frm_wd_uv = u2_pic_wd + (UWORD8)(PAD_LEN_UV_H << 2);
833 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y);
834
835 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8)(PAD_LEN_UV_V << 2);
836 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1));
837
838
839 /* Calculate display picture width, height and start u4_ofst from YUV420 */
840 /* pictute buffers as per cropping information parsed above */
841 {
842 UWORD16 u2_rgt_ofst = 0;
843 UWORD16 u2_lft_ofst = 0;
844 UWORD16 u2_top_ofst = 0;
845 UWORD16 u2_btm_ofst = 0;
846 UWORD8 u1_frm_mbs_flag;
847 UWORD8 u1_vert_mult_factor;
848 WORD32 i4_cropped_ht, i4_cropped_wd;
849
850 if(u1_frame_cropping_flag)
851 {
852 /* Calculate right and left u4_ofst for cropped picture */
853 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1;
854 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1;
855
856 /* Know frame MBs only u4_flag */
857 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag);
858
859 /* Simplify the vertical u4_ofst calculation from field/frame */
860 u1_vert_mult_factor = (2 - u1_frm_mbs_flag);
861
862 /* Calculate bottom and top u4_ofst for cropped picture */
863 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst
864 << u1_vert_mult_factor);
865 u2_top_ofst = (u1_frame_cropping_rect_top_ofst
866 << u1_vert_mult_factor);
867 }
868
869 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/
870 /* cropped picture buffer */
871 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst);
872 u2_crop_offset_uv = (u2_frm_wd_uv * (u2_top_ofst >> 1))
873 + (u2_lft_ofst >> 1) * YUV420SP_FACTOR;
874 /* Calculate the display picture width and height based on crop */
875 /* information */
876 i4_cropped_ht = u2_pic_ht - (u2_btm_ofst + u2_top_ofst);
877 i4_cropped_wd = u2_pic_wd - (u2_rgt_ofst + u2_lft_ofst);
878
879 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE))
880 {
881 return ERROR_INV_SPS_PPS_T;
882 }
883
884 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_wd != u2_pic_wd))
885 {
886 ps_dec->u1_res_changed = 1;
887 return IVD_RES_CHANGED;
888 }
889 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_ht != u2_pic_ht))
890 {
891 ps_dec->u1_res_changed = 1;
892 return IVD_RES_CHANGED;
893 }
894
895 /* Check for unsupported resolutions */
896 if((u2_pic_wd > H264_MAX_FRAME_WIDTH) || (u2_pic_ht > H264_MAX_FRAME_HEIGHT))
897 {
898 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
899 }
900
901 ps_dec->u2_disp_height = i4_cropped_ht;
902
903 ps_dec->u2_disp_width = i4_cropped_wd;
904
905 }
906
907 if(1 == ps_seq->u1_vui_parameters_present_flag)
908 {
909 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm);
910 if(ret != OK)
911 return ret;
912 }
913
914 ps_dec->u2_pic_wd = u2_pic_wd;
915 ps_dec->u2_pic_ht = u2_pic_ht;
916
917 /* Determining the Width and Height of Frame from that of Picture */
918 ps_dec->u2_frm_wd_y = u2_frm_wd_y;
919 ps_dec->u2_frm_ht_y = u2_frm_ht_y;
920
921 ps_dec->u2_frm_wd_uv = u2_frm_wd_uv;
922 ps_dec->u2_frm_ht_uv = u2_frm_ht_uv;
923 ps_dec->s_pad_mgr.u1_pad_len_y_v = (UWORD8)(PAD_LEN_Y_V << (1 - u1_frm));
924 ps_dec->s_pad_mgr.u1_pad_len_cr_v = (UWORD8)(PAD_LEN_UV_V << (1 - u1_frm));
925
926 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs;
927 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs;
928
929 ps_dec->u2_crop_offset_y = u2_crop_offset_y;
930 ps_dec->u2_crop_offset_uv = u2_crop_offset_uv;
931
932 /* In case bitstream read has exceeded the filled size, then
933 return an error */
934 if(ps_bitstrm->u4_ofst > ps_bitstrm->u4_max_ofst)
935 {
936 return ERROR_INV_SPS_PPS_T;
937 }
938 ps_seq->u1_is_valid = TRUE;
939 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq;
940
941 return OK;
942 }
943
944 /*!
945 **************************************************************************
946 * \if Function name : ih264d_parse_end_of_sequence \endif
947 *
948 * \brief
949 * Decodes End of Sequence.
950 *
951 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
952 *
953 * \return
954 * 0 on Success and error code otherwise
955 **************************************************************************
956 */
ih264d_parse_end_of_sequence(dec_struct_t * ps_dec)957 WORD32 ih264d_parse_end_of_sequence(dec_struct_t * ps_dec)
958 {
959 WORD32 ret;
960
961 ret = ih264d_end_of_pic_processing(ps_dec);
962 return ret;
963 }
964
965 /*!
966 **************************************************************************
967 * \if Function name : AcessUnitDelimiterRbsp \endif
968 *
969 * \brief
970 * Decodes AcessUnitDelimiterRbsp.
971 *
972 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit
973 *
974 * \return
975 * 0 on Success and error code otherwise
976 **************************************************************************
977 */
978
ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec)979 WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec)
980 {
981 UWORD8 u1_primary_pic_type;
982 u1_primary_pic_type = ih264d_get_bits_h264(ps_dec->ps_bitstrm, 3);
983 switch(u1_primary_pic_type)
984 {
985 case I_PIC:
986 case SI_PIC:
987 case ISI_PIC:
988 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_I;
989 break;
990 default:
991 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_UNKNOWN;
992 }
993 return (0);
994 }
995 /*!
996 **************************************************************************
997 * \if Function name : ih264d_parse_nal_unit \endif
998 *
999 * \brief
1000 * Decodes NAL unit
1001 *
1002 * \return
1003 * 0 on Success and error code otherwise
1004 **************************************************************************
1005 */
1006
ih264d_parse_nal_unit(iv_obj_t * dec_hdl,ivd_video_decode_op_t * ps_dec_op,UWORD8 * pu1_buf,UWORD32 u4_length)1007 WORD32 ih264d_parse_nal_unit(iv_obj_t *dec_hdl,
1008 ivd_video_decode_op_t *ps_dec_op,
1009 UWORD8 *pu1_buf,
1010 UWORD32 u4_length)
1011 {
1012
1013 dec_bit_stream_t *ps_bitstrm;
1014
1015
1016 dec_struct_t *ps_dec = (dec_struct_t *)dec_hdl->pv_codec_handle;
1017 ivd_video_decode_ip_t *ps_dec_in =
1018 (ivd_video_decode_ip_t *)ps_dec->pv_dec_in;
1019 dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice;
1020 UWORD8 u1_first_byte, u1_nal_ref_idc;
1021 UWORD8 u1_nal_unit_type;
1022 WORD32 i_status = OK;
1023 ps_bitstrm = ps_dec->ps_bitstrm;
1024
1025 if(pu1_buf)
1026 {
1027 if(u4_length)
1028 {
1029 ps_dec_op->u4_frame_decoded_flag = 0;
1030 ih264d_process_nal_unit(ps_dec->ps_bitstrm, pu1_buf,
1031 u4_length);
1032
1033 SWITCHOFFTRACE;
1034 u1_first_byte = ih264d_get_bits_h264(ps_bitstrm, 8);
1035
1036 if(NAL_FORBIDDEN_BIT(u1_first_byte))
1037 {
1038 H264_DEC_DEBUG_PRINT("\nForbidden bit set in Nal Unit, Let's try\n");
1039 }
1040 u1_nal_unit_type = NAL_UNIT_TYPE(u1_first_byte);
1041 // if any other nal unit other than slice nal is encountered in between a
1042 // frame break out of loop without consuming header
1043 if((ps_dec->u2_total_mbs_coded != 0) && (u1_nal_unit_type > IDR_SLICE_NAL))
1044 {
1045 return ERROR_INCOMPLETE_FRAME;
1046 }
1047 ps_dec->u1_nal_unit_type = u1_nal_unit_type;
1048 u1_nal_ref_idc = (UWORD8)(NAL_REF_IDC(u1_first_byte));
1049 //Skip all NALUs if SPS and PPS are not decoded
1050 switch(u1_nal_unit_type)
1051 {
1052 case SLICE_DATA_PARTITION_A_NAL:
1053 case SLICE_DATA_PARTITION_B_NAL:
1054 case SLICE_DATA_PARTITION_C_NAL:
1055 if(!ps_dec->i4_decode_header)
1056 ih264d_parse_slice_partition(ps_dec, ps_bitstrm);
1057
1058 break;
1059
1060 case IDR_SLICE_NAL:
1061 case SLICE_NAL:
1062
1063 /* ! */
1064 DEBUG_THREADS_PRINTF("Decoding a slice NAL\n");
1065 if(!ps_dec->i4_decode_header)
1066 {
1067 if(ps_dec->i4_header_decoded == 3)
1068 {
1069 /* ! */
1070 ps_dec->u4_slice_start_code_found = 1;
1071
1072 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1073
1074 i_status = ih264d_parse_decode_slice(
1075 (UWORD8)(u1_nal_unit_type
1076 == IDR_SLICE_NAL),
1077 u1_nal_ref_idc, ps_dec);
1078
1079 if((ps_dec->u4_first_slice_in_pic != 0)&&
1080 ((ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC) == 0))
1081 {
1082 /* if the first slice header was not valid set to 1 */
1083 ps_dec->u4_first_slice_in_pic = 1;
1084 }
1085
1086 if(i_status != OK)
1087 {
1088 return i_status;
1089 }
1090 }
1091 else
1092 {
1093 H264_DEC_DEBUG_PRINT(
1094 "\nSlice NAL Supplied but no header has been supplied\n");
1095 }
1096 }
1097 break;
1098
1099 case SEI_NAL:
1100 if(!ps_dec->i4_decode_header)
1101 {
1102 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1103 i_status = ih264d_parse_sei_message(ps_dec, ps_bitstrm);
1104 if(i_status != OK)
1105 return i_status;
1106 ih264d_parse_sei(ps_dec, ps_bitstrm);
1107 }
1108 break;
1109 case SEQ_PARAM_NAL:
1110 /* ! */
1111 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1112 i_status = ih264d_parse_sps(ps_dec, ps_bitstrm);
1113 if(i_status == ERROR_INV_SPS_PPS_T)
1114 return i_status;
1115 if(!i_status)
1116 ps_dec->i4_header_decoded |= 0x1;
1117 break;
1118
1119 case PIC_PARAM_NAL:
1120 /* ! */
1121 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm);
1122 i_status = ih264d_parse_pps(ps_dec, ps_bitstrm);
1123 if(i_status == ERROR_INV_SPS_PPS_T)
1124 return i_status;
1125 if(!i_status)
1126 ps_dec->i4_header_decoded |= 0x2;
1127 break;
1128 case ACCESS_UNIT_DELIMITER_RBSP:
1129 if(!ps_dec->i4_decode_header)
1130 {
1131 ih264d_access_unit_delimiter_rbsp(ps_dec);
1132 }
1133 break;
1134 //Let us ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL
1135 case END_OF_STREAM_RBSP:
1136 if(!ps_dec->i4_decode_header)
1137 {
1138 ih264d_parse_end_of_stream(ps_dec);
1139 }
1140 break;
1141 case FILLER_DATA_NAL:
1142 if(!ps_dec->i4_decode_header)
1143 {
1144 ih264d_parse_filler_data(ps_dec, ps_bitstrm);
1145 }
1146 break;
1147 default:
1148 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type);
1149 break;
1150 }
1151
1152 }
1153
1154 }
1155
1156 return i_status;
1157
1158 }
1159
1160