ih264d_parse_headers.c revision c080d5799655658eb847b0583f58e5aff3a5cbaa
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 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 */ 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 ps_pps->u1_is_valid = TRUE; 372 ps_dec->ps_pps[ps_pps->u1_pic_parameter_set_id] = *ps_pps; 373 return OK; 374} 375 376/*! 377 ************************************************************************** 378 * \if Function name : ih264d_parse_sps \endif 379 * 380 * \brief 381 * Decodes Sequence parameter set from the bitstream 382 * 383 * \return 384 * 0 on Success and Error code otherwise 385 ************************************************************************** 386 */ 387UWORD32 ih264d_correct_level_idc(UWORD32 u4_level_idc, UWORD32 u4_total_mbs) 388{ 389 UWORD32 u4_max_mbs_allowed; 390 391 switch(u4_level_idc) 392 { 393 case H264_LEVEL_1_0: 394 u4_max_mbs_allowed = MAX_MBS_LEVEL_10; 395 break; 396 case H264_LEVEL_1_1: 397 u4_max_mbs_allowed = MAX_MBS_LEVEL_11; 398 break; 399 case H264_LEVEL_1_2: 400 u4_max_mbs_allowed = MAX_MBS_LEVEL_12; 401 break; 402 case H264_LEVEL_1_3: 403 u4_max_mbs_allowed = MAX_MBS_LEVEL_13; 404 break; 405 case H264_LEVEL_2_0: 406 u4_max_mbs_allowed = MAX_MBS_LEVEL_20; 407 break; 408 case H264_LEVEL_2_1: 409 u4_max_mbs_allowed = MAX_MBS_LEVEL_21; 410 break; 411 case H264_LEVEL_2_2: 412 u4_max_mbs_allowed = MAX_MBS_LEVEL_22; 413 break; 414 case H264_LEVEL_3_0: 415 u4_max_mbs_allowed = MAX_MBS_LEVEL_30; 416 break; 417 case H264_LEVEL_3_1: 418 u4_max_mbs_allowed = MAX_MBS_LEVEL_31; 419 break; 420 case H264_LEVEL_3_2: 421 u4_max_mbs_allowed = MAX_MBS_LEVEL_32; 422 break; 423 case H264_LEVEL_4_0: 424 u4_max_mbs_allowed = MAX_MBS_LEVEL_40; 425 break; 426 case H264_LEVEL_4_1: 427 u4_max_mbs_allowed = MAX_MBS_LEVEL_41; 428 break; 429 case H264_LEVEL_4_2: 430 u4_max_mbs_allowed = MAX_MBS_LEVEL_42; 431 break; 432 case H264_LEVEL_5_0: 433 u4_max_mbs_allowed = MAX_MBS_LEVEL_50; 434 break; 435 case H264_LEVEL_5_1: 436 default: 437 u4_max_mbs_allowed = MAX_MBS_LEVEL_51; 438 break; 439 440 } 441 442 /*correct of the level is incorrect*/ 443 if(u4_total_mbs > u4_max_mbs_allowed) 444 { 445 if(u4_total_mbs > MAX_MBS_LEVEL_50) 446 u4_level_idc = H264_LEVEL_5_1; 447 else if(u4_total_mbs > MAX_MBS_LEVEL_42) 448 u4_level_idc = H264_LEVEL_5_0; 449 else if(u4_total_mbs > MAX_MBS_LEVEL_41) 450 u4_level_idc = H264_LEVEL_4_2; 451 else if(u4_total_mbs > MAX_MBS_LEVEL_40) 452 u4_level_idc = H264_LEVEL_4_1; 453 else if(u4_total_mbs > MAX_MBS_LEVEL_32) 454 u4_level_idc = H264_LEVEL_4_0; 455 else if(u4_total_mbs > MAX_MBS_LEVEL_31) 456 u4_level_idc = H264_LEVEL_3_2; 457 else if(u4_total_mbs > MAX_MBS_LEVEL_30) 458 u4_level_idc = H264_LEVEL_3_1; 459 else if(u4_total_mbs > MAX_MBS_LEVEL_21) 460 u4_level_idc = H264_LEVEL_3_0; 461 else if(u4_total_mbs > MAX_MBS_LEVEL_20) 462 u4_level_idc = H264_LEVEL_2_1; 463 else if(u4_total_mbs > MAX_MBS_LEVEL_10) 464 u4_level_idc = H264_LEVEL_2_0; 465 } 466 467 return (u4_level_idc); 468 469} 470WORD32 ih264d_parse_sps(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm) 471{ 472 UWORD8 i; 473 dec_seq_params_t *ps_seq = NULL; 474 UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id; 475 UWORD16 i2_max_frm_num; 476 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 477 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 478 UWORD8 u1_frm, uc_constraint_set0_flag, uc_constraint_set1_flag; 479 480 UWORD32 u4_temp; 481 WORD32 pic_height_in_map_units_minus1 = 0; 482 UWORD32 u2_pic_wd = 0; 483 UWORD32 u2_pic_ht = 0; 484 UWORD32 u2_frm_wd_y = 0; 485 UWORD32 u2_frm_ht_y = 0; 486 UWORD32 u2_frm_wd_uv = 0; 487 UWORD32 u2_frm_ht_uv = 0; 488 UWORD32 u2_crop_offset_y = 0; 489 UWORD32 u2_crop_offset_uv = 0; 490 WORD32 ret; 491 492 /* High profile related syntax element */ 493 WORD32 i4_i; 494 /* G050 */ 495 UWORD8 u1_frame_cropping_flag, u1_frame_cropping_rect_left_ofst, 496 u1_frame_cropping_rect_right_ofst, 497 u1_frame_cropping_rect_top_ofst, 498 u1_frame_cropping_rect_bottom_ofst; 499 /* G050 */ 500 /*--------------------------------------------------------------------*/ 501 /* Decode seq_parameter_set_id and profile and level values */ 502 /*--------------------------------------------------------------------*/ 503 SWITCHONTRACE; 504 u1_profile_idc = ih264d_get_bits_h264(ps_bitstrm, 8); 505 COPYTHECONTEXT("SPS: profile_idc",u1_profile_idc); 506 507 /* G050 */ 508 uc_constraint_set0_flag = ih264d_get_bit_h264(ps_bitstrm); 509 uc_constraint_set1_flag = ih264d_get_bit_h264(ps_bitstrm); 510 ih264d_get_bit_h264(ps_bitstrm); 511 512 /*****************************************************/ 513 /* Read 5 bits for uc_constraint_set3_flag (1 bit) */ 514 /* and reserved_zero_4bits (4 bits) - Sushant */ 515 /*****************************************************/ 516 ih264d_get_bits_h264(ps_bitstrm, 5); 517 /* G050 */ 518 519 /* Check whether particular profile is suported or not */ 520 /* Check whether particular profile is suported or not */ 521 if((u1_profile_idc != MAIN_PROFILE_IDC) && 522 523 (u1_profile_idc != BASE_PROFILE_IDC) && 524 525 (u1_profile_idc != HIGH_PROFILE_IDC) 526 527 ) 528 { 529 530 if((uc_constraint_set1_flag != 1) && (uc_constraint_set0_flag != 1)) 531 { 532 if(NULL != ps_dec) 533 { 534 UWORD32 i4_error_code; 535 i4_error_code = ERROR_FEATURE_UNAVAIL; 536 return i4_error_code; 537 } 538 else 539 { 540 return (ERROR_FEATURE_UNAVAIL); 541 } 542 } 543 } 544 545 u1_level_idc = ih264d_get_bits_h264(ps_bitstrm, 8); 546 547 548 549 COPYTHECONTEXT("SPS: u4_level_idc",u1_level_idc); 550 551 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 552 if(u4_temp & MASK_ERR_SEQ_SET_ID) 553 return ERROR_INV_SPS_PPS_T; 554 u1_seq_parameter_set_id = u4_temp; 555 COPYTHECONTEXT("SPS: seq_parameter_set_id", 556 u1_seq_parameter_set_id); 557 558 /*--------------------------------------------------------------------*/ 559 /* Find an seq param entry in seqparam array of decStruct */ 560 /*--------------------------------------------------------------------*/ 561 562 ps_seq = ps_dec->pv_scratch_sps_pps; 563 *ps_seq = ps_dec->ps_sps[u1_seq_parameter_set_id]; 564 ps_seq->u1_profile_idc = u1_profile_idc; 565 ps_seq->u1_level_idc = u1_level_idc; 566 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id; 567 568 /*******************************************************************/ 569 /* Initializations for high profile - Sushant */ 570 /*******************************************************************/ 571 ps_seq->i4_chroma_format_idc = 1; 572 ps_seq->i4_bit_depth_luma_minus8 = 0; 573 ps_seq->i4_bit_depth_chroma_minus8 = 0; 574 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0; 575 ps_seq->i4_seq_scaling_matrix_present_flag = 0; 576 if(u1_profile_idc == HIGH_PROFILE_IDC) 577 { 578 579 /* reading chroma_format_idc */ 580 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst, 581 pu4_bitstrm_buf); 582 583 /* Monochrome is not supported */ 584 if(ps_seq->i4_chroma_format_idc != 1) 585 { 586 return ERROR_INV_SPS_PPS_T; 587 } 588 589 /* reading bit_depth_luma_minus8 */ 590 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst, 591 pu4_bitstrm_buf); 592 593 if(ps_seq->i4_bit_depth_luma_minus8 != 0) 594 { 595 return ERROR_INV_SPS_PPS_T; 596 } 597 598 /* reading bit_depth_chroma_minus8 */ 599 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst, 600 pu4_bitstrm_buf); 601 602 if(ps_seq->i4_bit_depth_chroma_minus8 != 0) 603 { 604 return ERROR_INV_SPS_PPS_T; 605 } 606 607 /* reading qpprime_y_zero_transform_bypass_flag */ 608 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 609 (WORD32)ih264d_get_bit_h264(ps_bitstrm); 610 611 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0) 612 { 613 return ERROR_INV_SPS_PPS_T; 614 } 615 616 /* reading seq_scaling_matrix_present_flag */ 617 ps_seq->i4_seq_scaling_matrix_present_flag = 618 (WORD32)ih264d_get_bit_h264(ps_bitstrm); 619 620 if(ps_seq->i4_seq_scaling_matrix_present_flag) 621 { 622 for(i4_i = 0; i4_i < 8; i4_i++) 623 { 624 ps_seq->u1_seq_scaling_list_present_flag[i4_i] = 625 ih264d_get_bit_h264(ps_bitstrm); 626 627 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */ 628 /* before calling scaling list */ 629 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0; 630 631 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i]) 632 { 633 if(i4_i < 6) 634 { 635 ih264d_scaling_list( 636 ps_seq->i2_scalinglist4x4[i4_i], 637 16, 638 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i], 639 ps_bitstrm); 640 } 641 else 642 { 643 ih264d_scaling_list( 644 ps_seq->i2_scalinglist8x8[i4_i - 6], 645 64, 646 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i], 647 ps_bitstrm); 648 } 649 } 650 } 651 } 652 } 653 /*--------------------------------------------------------------------*/ 654 /* Decode MaxFrameNum */ 655 /*--------------------------------------------------------------------*/ 656 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 657 if(u4_temp > MAX_BITS_IN_FRAME_NUM) 658 { 659 return ERROR_INV_SPS_PPS_T; 660 } 661 ps_seq->u1_bits_in_frm_num = u4_temp; 662 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4", 663 (ps_seq->u1_bits_in_frm_num - 4)); 664 665 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num)); 666 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1; 667 /*--------------------------------------------------------------------*/ 668 /* Decode picture order count and related values */ 669 /*--------------------------------------------------------------------*/ 670 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 671 672 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE) 673 { 674 return ERROR_INV_POC_TYPE_T; 675 } 676 ps_seq->u1_pic_order_cnt_type = u4_temp; 677 COPYTHECONTEXT("SPS: pic_order_cnt_type",ps_seq->u1_pic_order_cnt_type); 678 679 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1; 680 if(ps_seq->u1_pic_order_cnt_type == 0) 681 { 682 u4_temp = 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 683 if(u4_temp > MAX_BITS_IN_POC_LSB) 684 { 685 return ERROR_INV_SPS_PPS_T; 686 } 687 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = u4_temp; 688 ps_seq->i4_max_pic_order_cntLsb = (1 << u4_temp); 689 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4",(u4_temp - 4)); 690 } 691 else if(ps_seq->u1_pic_order_cnt_type == 1) 692 { 693 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264( 694 ps_bitstrm); 695 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag", 696 ps_seq->u1_delta_pic_order_always_zero_flag); 697 698 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst, 699 pu4_bitstrm_buf); 700 COPYTHECONTEXT("SPS: offset_for_non_ref_pic", 701 ps_seq->i4_ofst_for_non_ref_pic); 702 703 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev( 704 pu4_bitstrm_ofst, pu4_bitstrm_buf); 705 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field", 706 ps_seq->i4_ofst_for_top_to_bottom_field); 707 708 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 709 if(u4_temp > 255) 710 return ERROR_INV_SPS_PPS_T; 711 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp; 712 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle", 713 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle); 714 715 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++) 716 { 717 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev( 718 pu4_bitstrm_ofst, pu4_bitstrm_buf); 719 COPYTHECONTEXT("SPS: offset_for_ref_frame", 720 ps_seq->i4_ofst_for_ref_frame[i]); 721 } 722 } 723 724 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 725 726 if((u4_temp > H264_MAX_REF_PICS)) 727 { 728 return ERROR_NUM_REF; 729 } 730 ps_seq->u1_num_ref_frames = u4_temp; 731 COPYTHECONTEXT("SPS: num_ref_frames",ps_seq->u1_num_ref_frames); 732 733 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264( 734 ps_bitstrm); 735 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag", 736 ps_seq->u1_gaps_in_frame_num_value_allowed_flag); 737 738 /*--------------------------------------------------------------------*/ 739 /* Decode FrameWidth and FrameHeight and related values */ 740 /*--------------------------------------------------------------------*/ 741 ps_seq->u2_frm_wd_in_mbs = 1 742 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 743 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1", 744 ps_seq->u2_frm_wd_in_mbs - 1); 745 u2_pic_wd = (ps_seq->u2_frm_wd_in_mbs << 4); 746 747 pic_height_in_map_units_minus1 = ih264d_uev(pu4_bitstrm_ofst, 748 pu4_bitstrm_buf); 749 ps_seq->u2_frm_ht_in_mbs = 1 + pic_height_in_map_units_minus1; 750 751 u2_pic_ht = (ps_seq->u2_frm_ht_in_mbs << 4); 752 753 /*--------------------------------------------------------------------*/ 754 /* Get the value of MaxMbAddress and Number of bits needed for it */ 755 /*--------------------------------------------------------------------*/ 756 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs 757 * ps_seq->u2_frm_ht_in_mbs) - 1; 758 759 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1; 760 761 ps_seq->u1_level_idc = ih264d_correct_level_idc( 762 u1_level_idc, ps_seq->u2_total_num_of_mbs); 763 764 u1_frm = ih264d_get_bit_h264(ps_bitstrm); 765 ps_seq->u1_frame_mbs_only_flag = u1_frm; 766 767 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm); 768 769 if(!u1_frm) 770 { 771 u2_pic_ht <<= 1; 772 ps_seq->u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm); 773 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag", 774 ps_seq->u1_mb_aff_flag); 775 776 } 777 else 778 ps_seq->u1_mb_aff_flag = 0; 779 780 { 781 WORD32 frame_height_in_mbs = (2 - ps_seq->u1_frame_mbs_only_flag) 782 * (pic_height_in_map_units_minus1 + 1); 783 UWORD32 wdth = (ps_seq->u2_frm_wd_in_mbs) << 4; 784 UWORD32 hght = (frame_height_in_mbs) << 4; 785 786 if((u2_pic_wd < H264_MIN_FRAME_WIDTH) 787 || (u2_pic_wd > ps_dec->u4_width_at_init)) 788 { 789 ivd_video_decode_op_t *ps_out; 790 /*set width and height in decode output structure*/ 791 ps_out = (ivd_video_decode_op_t *)ps_dec->pv_dec_out; 792 ps_out->u4_pic_wd = u2_pic_wd; 793 ps_out->u4_pic_ht = u2_pic_ht; 794 795 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; 796 } 797 798 if((u2_pic_ht < H264_MIN_FRAME_HEIGHT) 799 || (((0 != ps_seq->u1_frame_mbs_only_flag) 800 && (u2_pic_ht * u2_pic_wd 801 > ps_dec->u4_height_at_init 802 * ps_dec->u4_width_at_init)) 803 || ((0 == ps_seq->u1_frame_mbs_only_flag) 804 && (ALIGN32(u2_pic_ht) 805 * u2_pic_wd 806 > ALIGN32(ps_dec->u4_height_at_init) 807 * ps_dec->u4_width_at_init)))) 808 { 809 ivd_video_decode_op_t *ps_out; 810 /*set width and height in decode output structure*/ 811 ps_out = (ivd_video_decode_op_t *)ps_dec->pv_dec_out; 812 ps_out->u4_pic_wd = u2_pic_wd; 813 ps_out->u4_pic_ht = u2_pic_ht; 814 815 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED; 816 } 817 818 819 820 821 } 822 823 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm); 824 825 COPYTHECONTEXT("SPS: direct_8x8_inference_flag", 826 ps_seq->u1_direct_8x8_inference_flag); 827 828 /* G050 */ 829 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm); 830 COPYTHECONTEXT("SPS: frame_cropping_flag",u1_frame_cropping_flag); 831 832 if(u1_frame_cropping_flag) 833 { 834 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst, 835 pu4_bitstrm_buf); 836 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset", 837 u1_frame_cropping_rect_left_ofst); 838 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst, 839 pu4_bitstrm_buf); 840 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset", 841 u1_frame_cropping_rect_right_ofst); 842 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst, 843 pu4_bitstrm_buf); 844 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset", 845 u1_frame_cropping_rect_top_ofst); 846 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst, 847 pu4_bitstrm_buf); 848 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset", 849 u1_frame_cropping_rect_bottom_ofst); 850 } 851 /* G050 */ 852 853 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm); 854 COPYTHECONTEXT("SPS: vui_parameters_present_flag", 855 ps_seq->u1_vui_parameters_present_flag); 856 857 u2_frm_wd_y = u2_pic_wd + (UWORD8)(PAD_LEN_Y_H << 1); 858 if(1 == ps_dec->u4_share_disp_buf) 859 { 860 if(ps_dec->u4_app_disp_width > u2_frm_wd_y) 861 u2_frm_wd_y = ps_dec->u4_app_disp_width; 862 } 863 864 u2_frm_ht_y = u2_pic_ht + (UWORD8)(PAD_LEN_Y_V << 2); 865 u2_frm_wd_uv = u2_pic_wd + (UWORD8)(PAD_LEN_UV_H << 2); 866 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y); 867 868 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8)(PAD_LEN_UV_V << 2); 869 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1)); 870 871 872 /* Calculate display picture width, height and start u4_ofst from YUV420 */ 873 /* pictute buffers as per cropping information parsed above */ 874 { 875 UWORD16 u2_rgt_ofst = 0; 876 UWORD16 u2_lft_ofst = 0; 877 UWORD16 u2_top_ofst = 0; 878 UWORD16 u2_btm_ofst = 0; 879 UWORD8 u1_frm_mbs_flag; 880 UWORD8 u1_vert_mult_factor; 881 WORD32 i4_cropped_ht, i4_cropped_wd; 882 883 if(u1_frame_cropping_flag) 884 { 885 /* Calculate right and left u4_ofst for cropped picture */ 886 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1; 887 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1; 888 889 /* Know frame MBs only u4_flag */ 890 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag); 891 892 /* Simplify the vertical u4_ofst calculation from field/frame */ 893 u1_vert_mult_factor = (2 - u1_frm_mbs_flag); 894 895 /* Calculate bottom and top u4_ofst for cropped picture */ 896 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst 897 << u1_vert_mult_factor); 898 u2_top_ofst = (u1_frame_cropping_rect_top_ofst 899 << u1_vert_mult_factor); 900 } 901 902 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/ 903 /* cropped picture buffer */ 904 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst); 905 u2_crop_offset_uv = (u2_frm_wd_uv * (u2_top_ofst >> 1)) 906 + (u2_lft_ofst >> 1) * YUV420SP_FACTOR; 907 /* Calculate the display picture width and height based on crop */ 908 /* information */ 909 i4_cropped_ht = u2_pic_ht - (u2_btm_ofst + u2_top_ofst); 910 i4_cropped_wd = u2_pic_wd - (u2_rgt_ofst + u2_lft_ofst); 911 912 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE)) 913 { 914 return ERROR_INV_SPS_PPS_T; 915 } 916 917 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_wd != u2_pic_wd)) 918 { 919 ps_dec->u1_res_changed = 1; 920 return IVD_RES_CHANGED; 921 } 922 if((3 == ps_dec->i4_header_decoded) && (ps_dec->u2_pic_ht != u2_pic_ht)) 923 { 924 ps_dec->u1_res_changed = 1; 925 return IVD_RES_CHANGED; 926 } 927 928 ps_dec->u2_disp_height = i4_cropped_ht; 929 930 ps_dec->u2_disp_width = i4_cropped_wd; 931 932 } 933 if(ps_dec->u4_level_at_init < u1_level_idc) 934 { 935 return IH264D_UNSUPPORTED_LEVEL; 936 } 937 938 ps_seq->u1_is_valid = TRUE; 939 940 if(1 == ps_seq->u1_vui_parameters_present_flag) 941 { 942 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm); 943 if(ret != OK) 944 return ret; 945 } 946 947 ps_dec->u2_pic_wd = u2_pic_wd; 948 ps_dec->u2_pic_ht = u2_pic_ht; 949 950 /* Determining the Width and Height of Frame from that of Picture */ 951 ps_dec->u2_frm_wd_y = u2_frm_wd_y; 952 ps_dec->u2_frm_ht_y = u2_frm_ht_y; 953 954 ps_dec->u2_frm_wd_uv = u2_frm_wd_uv; 955 ps_dec->u2_frm_ht_uv = u2_frm_ht_uv; 956 ps_dec->s_pad_mgr.u1_pad_len_y_v = (UWORD8)(PAD_LEN_Y_V << (1 - u1_frm)); 957 ps_dec->s_pad_mgr.u1_pad_len_cr_v = (UWORD8)(PAD_LEN_UV_V << (1 - u1_frm)); 958 959 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs; 960 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs; 961 962 ps_dec->u2_crop_offset_y = u2_crop_offset_y; 963 ps_dec->u2_crop_offset_uv = u2_crop_offset_uv; 964 965 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq; 966 967 return OK; 968} 969 970/*! 971 ************************************************************************** 972 * \if Function name : ih264d_parse_end_of_sequence \endif 973 * 974 * \brief 975 * Decodes End of Sequence. 976 * 977 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit 978 * 979 * \return 980 * 0 on Success and error code otherwise 981 ************************************************************************** 982 */ 983WORD32 ih264d_parse_end_of_sequence(dec_struct_t * ps_dec) 984{ 985 WORD32 ret; 986 987 ret = ih264d_end_of_pic_processing(ps_dec); 988 return ret; 989} 990 991/*! 992 ************************************************************************** 993 * \if Function name : AcessUnitDelimiterRbsp \endif 994 * 995 * \brief 996 * Decodes AcessUnitDelimiterRbsp. 997 * 998 * \param ps_bitstrm : Pointer to bit ps_bitstrm containing the NAL unit 999 * 1000 * \return 1001 * 0 on Success and error code otherwise 1002 ************************************************************************** 1003 */ 1004 1005WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t * ps_dec) 1006{ 1007 UWORD8 u1_primary_pic_type; 1008 u1_primary_pic_type = ih264d_get_bits_h264(ps_dec->ps_bitstrm, 3); 1009 switch(u1_primary_pic_type) 1010 { 1011 case I_PIC: 1012 case SI_PIC: 1013 case ISI_PIC: 1014 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_I; 1015 break; 1016 default: 1017 ps_dec->ps_dec_err_status->u1_pic_aud_i = PIC_TYPE_UNKNOWN; 1018 } 1019 return (0); 1020} 1021/*! 1022 ************************************************************************** 1023 * \if Function name : ih264d_parse_nal_unit \endif 1024 * 1025 * \brief 1026 * Decodes NAL unit 1027 * 1028 * \return 1029 * 0 on Success and error code otherwise 1030 ************************************************************************** 1031 */ 1032 1033WORD32 ih264d_parse_nal_unit(iv_obj_t *dec_hdl, 1034 ivd_video_decode_op_t *ps_dec_op, 1035 UWORD8 *pu1_buf, 1036 UWORD32 u4_length) 1037{ 1038 1039 dec_bit_stream_t *ps_bitstrm; 1040 1041 1042 dec_struct_t *ps_dec = (dec_struct_t *)dec_hdl->pv_codec_handle; 1043 ivd_video_decode_ip_t *ps_dec_in = 1044 (ivd_video_decode_ip_t *)ps_dec->pv_dec_in; 1045 dec_slice_params_t * ps_cur_slice = ps_dec->ps_cur_slice; 1046 UWORD8 u1_first_byte, u1_nal_ref_idc; 1047 UWORD8 u1_nal_unit_type; 1048 WORD32 i_status = OK; 1049 ps_bitstrm = ps_dec->ps_bitstrm; 1050 1051 if(pu1_buf) 1052 { 1053 if(u4_length) 1054 { 1055 ps_dec_op->u4_frame_decoded_flag = 0; 1056 ih264d_process_nal_unit(ps_dec->ps_bitstrm, pu1_buf, 1057 u4_length); 1058 1059 SWITCHOFFTRACE; 1060 u1_first_byte = ih264d_get_bits_h264(ps_bitstrm, 8); 1061 1062 if(NAL_FORBIDDEN_BIT(u1_first_byte)) 1063 { 1064 H264_DEC_DEBUG_PRINT("\nForbidden bit set in Nal Unit, Let's try\n"); 1065 } 1066 u1_nal_unit_type = NAL_UNIT_TYPE(u1_first_byte); 1067 ps_dec->u1_nal_unit_type = u1_nal_unit_type; 1068 u1_nal_ref_idc = (UWORD8)(NAL_REF_IDC(u1_first_byte)); 1069 //Skip all NALUs if SPS and PPS are not decoded 1070 switch(u1_nal_unit_type) 1071 { 1072 case SLICE_DATA_PARTITION_A_NAL: 1073 case SLICE_DATA_PARTITION_B_NAL: 1074 case SLICE_DATA_PARTITION_C_NAL: 1075 if(!ps_dec->i4_decode_header) 1076 ih264d_parse_slice_partition(ps_dec, ps_bitstrm); 1077 1078 break; 1079 1080 case IDR_SLICE_NAL: 1081 case SLICE_NAL: 1082 1083 /* ! */ 1084 DEBUG_THREADS_PRINTF("Decoding a slice NAL\n"); 1085 if(!ps_dec->i4_decode_header) 1086 { 1087 if(ps_dec->i4_header_decoded == 3) 1088 { 1089 /* ! */ 1090 ps_dec->u4_slice_start_code_found = 1; 1091 1092 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); 1093 1094 i_status = ih264d_parse_decode_slice( 1095 (UWORD8)(u1_nal_unit_type 1096 == IDR_SLICE_NAL), 1097 u1_nal_ref_idc, ps_dec); 1098 1099 if(i_status != OK) 1100 return i_status; 1101 } 1102 else 1103 { 1104 H264_DEC_DEBUG_PRINT( 1105 "\nSlice NAL Supplied but no header has been supplied\n"); 1106 } 1107 } 1108 break; 1109 1110 case SEI_NAL: 1111 if(!ps_dec->i4_decode_header) 1112 { 1113 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); 1114 i_status = ih264d_parse_sei_message(ps_dec, ps_bitstrm); 1115 if(i_status != OK) 1116 return i_status; 1117 ih264d_parse_sei(ps_dec, ps_bitstrm); 1118 } 1119 break; 1120 case SEQ_PARAM_NAL: 1121 /* ! */ 1122 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); 1123 i_status = ih264d_parse_sps(ps_dec, ps_bitstrm); 1124 if(i_status == ERROR_INV_SPS_PPS_T) 1125 return i_status; 1126 if(!i_status) 1127 ps_dec->i4_header_decoded |= 0x1; 1128 break; 1129 1130 case PIC_PARAM_NAL: 1131 /* ! */ 1132 ih264d_rbsp_to_sodb(ps_dec->ps_bitstrm); 1133 i_status = ih264d_parse_pps(ps_dec, ps_bitstrm); 1134 if(i_status == ERROR_INV_SPS_PPS_T) 1135 return i_status; 1136 if(!i_status) 1137 ps_dec->i4_header_decoded |= 0x2; 1138 break; 1139 case ACCESS_UNIT_DELIMITER_RBSP: 1140 if(!ps_dec->i4_decode_header) 1141 { 1142 ih264d_access_unit_delimiter_rbsp(ps_dec); 1143 } 1144 break; 1145 //Let us ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL 1146 case END_OF_STREAM_RBSP: 1147 if(!ps_dec->i4_decode_header) 1148 { 1149 ih264d_parse_end_of_stream(ps_dec); 1150 } 1151 break; 1152 case FILLER_DATA_NAL: 1153 if(!ps_dec->i4_decode_header) 1154 { 1155 ih264d_parse_filler_data(ps_dec, ps_bitstrm); 1156 } 1157 break; 1158 default: 1159 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type); 1160 break; 1161 } 1162 1163 } 1164 1165 } 1166 1167 return i_status; 1168 1169} 1170 1171