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_bslice.c 23 * 24 * \brief 25 * Contains routines that decode a I slice type 26 * 27 * Detailed_description 28 * 29 * \date 30 * 07/07/2003 31 * 32 * \author NS 33 ************************************************************************** 34 */ 35 36#include <string.h> 37#include "ih264d_bitstrm.h" 38#include "ih264d_defs.h" 39#include "ih264d_debug.h" 40#include "ih264d_tables.h" 41#include "ih264d_structs.h" 42#include "ih264d_defs.h" 43#include "ih264d_parse_cavlc.h" 44#include "ih264d_mb_utils.h" 45#include "ih264d_parse_slice.h" 46#include "ih264d_process_intra_mb.h" 47#include "ih264d_mvpred.h" 48#include "ih264d_parse_islice.h" 49#include "ih264d_inter_pred.h" 50#include "ih264d_process_pslice.h" 51#include "ih264d_process_bslice.h" 52#include "ih264d_deblocking.h" 53#include "ih264d_cabac.h" 54#include "ih264d_parse_mb_header.h" 55#include "ih264d_error_handler.h" 56#include "ih264d_mvpred.h" 57#include "ih264d_cabac.h" 58#include "ih264d_utils.h" 59 60void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec); 61 62/*! 63 ************************************************************************** 64 * \if Function name : ParseMb_SubMb_PredBCav\endif 65 * 66 * \brief 67 * Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1 68 * 69 * \return 70 * None. 71 * 72 ************************************************************************** 73 */ 74WORD32 ih264d_parse_bmb_non_direct_cavlc(dec_struct_t * ps_dec, 75 dec_mb_info_t * ps_cur_mb_info, 76 UWORD8 u1_mb_num, 77 UWORD8 u1_num_mbsNby2) 78{ 79 dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; 80 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 81 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 82 UWORD8 * pu1_sub_mb_pred_modes = (UWORD8 *)(gau1_ih264d_submb_pred_modes) + 4; 83 const UWORD8 (*pu1_mb_pred_modes)[32] = 84 (const UWORD8 (*)[32])gau1_ih264d_mb_pred_modes; 85 const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part; 86 const UWORD8 * pu1_sub_mb_mc_mode = (const UWORD8 *)(gau1_ih264d_submb_mc_mode) 87 + 4; 88 89 parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data 90 + u1_num_mbsNby2; 91 UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info; 92 WORD8 (*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_parse_mb_data->i1_ref_idx; 93 UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; 94 UWORD8 u1_mb_mc_mode, u1_num_mb_part, u1_sub_mb = !(u1_mb_type ^ B_8x8); 95 UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0; 96 WORD32 ret; 97 98 if(u1_sub_mb) 99 { 100 UWORD8 uc_i; 101 u1_mb_mc_mode = 0; 102 u1_num_mb_part = 4; 103 /* Reading the subMB type */ 104 for(uc_i = 0; uc_i < 4; uc_i++) 105 { 106 107 UWORD32 ui_sub_mb_mode; 108 109//Inlined ih264d_uev 110 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 111 UWORD32 u4_word, u4_ldz; 112 113 /***************************************************************/ 114 /* Find leading zeros in next 32 bits */ 115 /***************************************************************/ 116 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 117 u4_ldz = CLZ(u4_word); 118 /* Flush the ps_bitstrm */ 119 u4_bitstream_offset += (u4_ldz + 1); 120 /* Read the suffix from the ps_bitstrm */ 121 u4_word = 0; 122 if(u4_ldz) 123 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 124 u4_ldz); 125 *pu4_bitstrm_ofst = u4_bitstream_offset; 126 ui_sub_mb_mode = ((1 << u4_ldz) + u4_word - 1); 127//Inlined ih264d_uev 128 129 if(ui_sub_mb_mode > 12) 130 return ERROR_SUB_MB_TYPE; 131 else 132 { 133 UWORD8 u1_subMbPredMode = pu1_sub_mb_pred_modes[ui_sub_mb_mode]; 134 u4_mb_mc_mode = (u4_mb_mc_mode << 8) 135 | pu1_sub_mb_mc_mode[ui_sub_mb_mode]; 136 u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredMode; 137 pi1_ref_idx[0][uc_i] = ((u1_subMbPredMode & PRED_L0) - 1) >> 1; 138 pi1_ref_idx[1][uc_i] = ((u1_subMbPredMode & PRED_L1) - 1) >> 1; 139 COPYTHECONTEXT("sub_mb_type", u1_subMbPredMode); 140 } 141 /* Storing collocated Mb and SubMb mode information */ 142 *pu1_col_info++ = ((PRED_8x8) << 6) 143 | ((pu1_sub_mb_mc_mode[ui_sub_mb_mode] << 4)); 144 if(ui_sub_mb_mode != B_DIRECT_8x8) 145 { 146 if(ui_sub_mb_mode > B_BI_8x8) 147 { 148 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; 149 } 150 } 151 else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag) 152 { 153 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; 154 } 155 } 156 } 157 else 158 { 159 UWORD8 u1_mb_pred_mode_idx = 5 + u1_mb_type; 160 UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mb_pred_mode_idx]; 161 UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mb_pred_mode_idx]; 162 u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode; 163 u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode]; 164 165 pi1_ref_idx[0][0] = ((u1_mb_pred_mode_part0 & PRED_L0) - 1) >> 1; 166 pi1_ref_idx[1][0] = ((u1_mb_pred_mode_part0 & PRED_L1) - 1) >> 1; 167 pi1_ref_idx[0][1] = ((u1_mb_pred_mode_part1 & PRED_L0) - 1) >> 1; 168 pi1_ref_idx[1][1] = ((u1_mb_pred_mode_part1 & PRED_L1) - 1) >> 1; 169 170 u4_mb_pred_mode = (u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1; 171 u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8); 172 u4_mb_mc_mode <<= 16; 173 u4_mb_pred_mode <<= 16; 174 175 /* Storing collocated Mb and SubMb mode information */ 176 *pu1_col_info++ = (u1_mb_mc_mode << 6); 177 if(u1_mb_mc_mode) 178 *pu1_col_info++ = (u1_mb_mc_mode << 6); 179 } 180 181 { 182 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; 183 UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag; 184 UWORD8 *pu1_num_ref_idx_lx_active = 185 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active; 186 const UWORD8 u1_mbaff_field = (u1_mbaff & uc_field); 187 UWORD8 u4_num_ref_idx_lx_active; 188 189 u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[0] 190 << u1_mbaff_field) - 1; 191 192 if(u4_num_ref_idx_lx_active) 193 { 194 if(1 == u4_num_ref_idx_lx_active) 195 ih264d_parse_bmb_ref_index_cavlc_range1( 196 u1_num_mb_part, ps_bitstrm, pi1_ref_idx[0], 197 u4_num_ref_idx_lx_active); 198 else 199 { 200 ret = ih264d_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, 201 pi1_ref_idx[0], 202 u4_num_ref_idx_lx_active); 203 if(ret != OK) 204 return ret; 205 } 206 } 207 208 u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[1] 209 << u1_mbaff_field) - 1; 210 211 if(u4_num_ref_idx_lx_active) 212 { 213 if(1 == u4_num_ref_idx_lx_active) 214 ih264d_parse_bmb_ref_index_cavlc_range1( 215 u1_num_mb_part, ps_bitstrm, pi1_ref_idx[1], 216 u4_num_ref_idx_lx_active); 217 else 218 { 219 ret = ih264d_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, 220 pi1_ref_idx[1], 221 u4_num_ref_idx_lx_active); 222 if(ret != OK) 223 return ret; 224 } 225 } 226 } 227 228 /* Read MotionVectors */ 229 { 230 const UWORD8 * pu1_top_left_sub_mb_indx; 231 232 const UWORD8 * pu1_sub_mb_indx_mod = 233 (const UWORD8 *)(gau1_ih264d_submb_indx_mod) 234 + (u1_sub_mb * 6); 235 const UWORD8 * pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw; 236 const UWORD8 * pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth; 237 const UWORD8 * pu1_num_sub_mb_part = 238 (const UWORD8 *)gau1_ih264d_num_submb_part; 239 const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw; 240 const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth; 241 UWORD8 u1_p_idx = 0, u1_num_submb_part, uc_lx; 242 parse_part_params_t * ps_part; 243 mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4); 244 UWORD8 u1_mb_part_wd, u1_mb_part_ht; 245 246 /* Initialisations */ 247 ps_part = ps_dec->ps_part; 248 /* Default Initialization for Non subMb Case Mode */ 249 u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode]; 250 u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode]; 251 u1_num_submb_part = 1; 252 253 /* Decoding the MV for the subMB */ 254 for(uc_lx = 0; uc_lx < 2; uc_lx++) 255 { 256 UWORD8 u1_sub_mb_num = 0, u1_pred_mode, uc_i; 257 UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode; 258 UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode; 259 UWORD16 u2_sub_mb_num = 0x028A; // for sub mb case 260 UWORD8 u1_b2 = uc_lx << 1; 261 u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0; 262 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1); 263 264 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) 265 { 266 UWORD8 u1_mb_mc_mode, uc_j; 267 UWORD8 i1_pred = u4_mb_pred_mode_tmp >> 24; 268 u1_mb_mc_mode = u4_mb_mc_mode_tmp >> 24; 269 u4_mb_pred_mode_tmp <<= 8; 270 u4_mb_mc_mode_tmp <<= 8; 271 /* subMb prediction mode */ 272 if(u1_sub_mb) 273 { 274 275 u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode]; 276 u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode]; 277 u1_sub_mb_num = u2_sub_mb_num >> 12; 278 u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode]; 279 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod 280 + (u1_mb_mc_mode << 1); 281 u2_sub_mb_num <<= 4; 282 } 283 for(uc_j = 0; uc_j < u1_num_submb_part; 284 uc_j++, pu1_top_left_sub_mb_indx++) 285 { 286 mv_pred_t * ps_mv; 287 u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx; 288 ps_mv = ps_mv_start + u1_sub_mb_num; 289 290 /* Storing Info for partitions, writing only once */ 291 if(uc_lx) 292 { 293 ps_part->u1_is_direct = (!i1_pred); 294 ps_part->u1_pred_mode = i1_pred; 295 ps_part->u1_sub_mb_num = u1_sub_mb_num; 296 ps_part->u1_partheight = u1_mb_part_ht; 297 ps_part->u1_partwidth = u1_mb_part_wd; 298 /* Increment partition Index */ 299 u1_p_idx++; 300 ps_part++; 301 } 302 303 if(i1_pred & u1_pred_mode) 304 { 305 WORD16 i2_mvx, i2_mvy; 306 307//inlining ih264d_sev 308 { 309 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 310 UWORD32 u4_word, u4_ldz, u4_abs_val; 311 312 /***************************************************************/ 313 /* Find leading zeros in next 32 bits */ 314 /***************************************************************/ 315 NEXTBITS_32(u4_word, u4_bitstream_offset, 316 pu4_bitstrm_buf); 317 u4_ldz = CLZ(u4_word); 318 319 /* Flush the ps_bitstrm */ 320 u4_bitstream_offset += (u4_ldz + 1); 321 322 /* Read the suffix from the ps_bitstrm */ 323 u4_word = 0; 324 if(u4_ldz) 325 GETBITS(u4_word, u4_bitstream_offset, 326 pu4_bitstrm_buf, u4_ldz); 327 328 *pu4_bitstrm_ofst = u4_bitstream_offset; 329 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; 330 331 if(u4_word & 0x1) 332 i2_mvx = (-(WORD32)u4_abs_val); 333 else 334 i2_mvx = (u4_abs_val); 335 } 336//inlinined ih264d_sev 337 338//inlining ih264d_sev 339 { 340 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 341 UWORD32 u4_word, u4_ldz, u4_abs_val; 342 343 /***************************************************************/ 344 /* Find leading zeros in next 32 bits */ 345 /***************************************************************/ 346 NEXTBITS_32(u4_word, u4_bitstream_offset, 347 pu4_bitstrm_buf); 348 u4_ldz = CLZ(u4_word); 349 350 /* Flush the ps_bitstrm */ 351 u4_bitstream_offset += (u4_ldz + 1); 352 353 /* Read the suffix from the ps_bitstrm */ 354 u4_word = 0; 355 if(u4_ldz) 356 GETBITS(u4_word, u4_bitstream_offset, 357 pu4_bitstrm_buf, u4_ldz); 358 359 *pu4_bitstrm_ofst = u4_bitstream_offset; 360 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; 361 362 if(u4_word & 0x1) 363 i2_mvy = (-(WORD32)u4_abs_val); 364 else 365 i2_mvy = (u4_abs_val); 366 } 367//inlinined ih264d_sev 368 369 /* Storing Mv residuals */ 370 ps_mv->i2_mv[u1_b2] = i2_mvx; 371 ps_mv->i2_mv[u1_b2 + 1] = i2_mvy; 372 } 373 } 374 } 375 } 376 /* write back to the scratch partition info */ 377 ps_dec->ps_part = ps_part; 378 ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part; 379 380 } 381 return OK; 382} 383 384/*! 385 ************************************************************************** 386 * \if Function name : ParseMb_SubMb_PredBCab\endif 387 * 388 * \brief 389 * Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1 390 * 391 * \return 392 * None. 393 * 394 ************************************************************************** 395 */ 396 397WORD32 ih264d_parse_bmb_non_direct_cabac(dec_struct_t * ps_dec, 398 dec_mb_info_t * ps_cur_mb_info, 399 UWORD8 u1_mb_num, 400 UWORD8 u1_num_mbsNby2) 401{ 402 /* Loads from ps_dec */ 403 decoding_envirnoment_t * ps_cab_env = &ps_dec->s_cab_dec_env; 404 dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; 405 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; 406 parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data 407 + u1_num_mbsNby2; 408 409 /* table pointer loads */ 410 const UWORD8 * pu1_sub_mb_pred_modes = (UWORD8 *)(gau1_ih264d_submb_pred_modes) 411 + 4; 412 const UWORD8 (*pu1_mb_pred_modes)[32] = 413 (const UWORD8 (*)[32])gau1_ih264d_mb_pred_modes; 414 const UWORD8 *pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part; 415 const UWORD8 *pu1_sub_mb_mc_mode = (UWORD8 *)(gau1_ih264d_submb_mc_mode) + 4; 416 417 const UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; 418 UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info; 419 WORD8 *pi1_ref_idx_l0 = &ps_parse_mb_data->i1_ref_idx[0][0]; 420 WORD8 *pi1_ref_idx_l1 = &ps_parse_mb_data->i1_ref_idx[1][0]; 421 UWORD8 u1_dec_ref_l0, u1_dec_ref_l1; 422 423 UWORD8 u1_num_mb_part, u1_mb_mc_mode, u1_sub_mb, u1_mbpred_mode = 5 424 + u1_mb_type; 425 UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0; 426 WORD32 ret; 427 428 p_curr_ctxt->u1_mb_type = CAB_NON_BD16x16; 429 u1_sub_mb = !(u1_mb_type ^ B_8x8); 430 431 { 432 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; 433 UWORD8 *pu1_num_ref_idx_lx_active = 434 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active; 435 UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag; 436 UWORD8 u1_mbaff_field = (u1_mbaff & uc_field); 437 u1_dec_ref_l0 = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1; 438 u1_dec_ref_l1 = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1; 439 } 440 441 if(u1_sub_mb) 442 { 443 const UWORD8 u1_colz = ((PRED_8x8) << 6); 444 UWORD8 uc_i; 445 u1_mb_mc_mode = 0; 446 u1_num_mb_part = 4; 447 /* Reading the subMB type */ 448 for(uc_i = 0; uc_i < 4; uc_i++) 449 { 450 UWORD8 u1_sub_mb_mode, u1_subMbPredModes; 451 u1_sub_mb_mode = ih264d_parse_submb_type_cabac( 452 1, ps_cab_env, ps_bitstrm, 453 ps_dec->p_sub_mb_type_t); 454 455 if(u1_sub_mb_mode > 12) 456 return ERROR_SUB_MB_TYPE; 457 458 u1_subMbPredModes = pu1_sub_mb_pred_modes[u1_sub_mb_mode]; 459 u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[u1_sub_mb_mode]; 460 u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredModes; 461 *pi1_ref_idx_l0++ = 462 (u1_subMbPredModes & PRED_L0) ? u1_dec_ref_l0 : -1; 463 *pi1_ref_idx_l1++ = 464 (u1_subMbPredModes & PRED_L1) ? u1_dec_ref_l1 : -1; 465 COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode); 466 /* Storing collocated Mb and SubMb mode information */ 467 *pu1_col_info++ = 468 (u1_colz | (pu1_sub_mb_mc_mode[u1_sub_mb_mode] << 4)); 469 if(u1_sub_mb_mode != B_DIRECT_8x8) 470 { 471 if(u1_sub_mb_mode > B_BI_8x8) 472 { 473 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; 474 } 475 } 476 else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag) 477 { 478 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0; 479 } 480 } 481 pi1_ref_idx_l0 -= 4; 482 pi1_ref_idx_l1 -= 4; 483 } 484 else 485 { 486 UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mbpred_mode]; 487 UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mbpred_mode]; 488 u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode; 489 u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode]; 490 /* Storing collocated Mb and SubMb mode information */ 491 *pu1_col_info++ = (u1_mb_mc_mode << 6); 492 if(u1_mb_mc_mode) 493 *pu1_col_info++ = (u1_mb_mc_mode << 6); 494 u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8); 495 u4_mb_mc_mode <<= 16; 496 u4_mb_pred_mode = ((u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1) << 16; 497 498 *pi1_ref_idx_l0++ = (u1_mb_pred_mode_part0 & PRED_L0) ? u1_dec_ref_l0 : -1; 499 *pi1_ref_idx_l0-- = (u1_mb_pred_mode_part1 & PRED_L0) ? u1_dec_ref_l0 : -1; 500 *pi1_ref_idx_l1++ = (u1_mb_pred_mode_part0 & PRED_L1) ? u1_dec_ref_l1 : -1; 501 *pi1_ref_idx_l1-- = (u1_mb_pred_mode_part1 & PRED_L1) ? u1_dec_ref_l1 : -1; 502 } 503 { 504 WORD8 *pi1_lft_cxt = ps_dec->pi1_left_ref_idx_ctxt_inc; 505 WORD8 *pi1_top_cxt = p_curr_ctxt->i1_ref_idx; 506 507 ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, u1_dec_ref_l0, 508 u1_mb_mc_mode, pi1_ref_idx_l0, pi1_lft_cxt, 509 pi1_top_cxt, ps_cab_env, ps_bitstrm, 510 ps_dec->p_ref_idx_t); 511 if(ret != OK) 512 return ret; 513 514 ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 2, u1_dec_ref_l1, 515 u1_mb_mc_mode, pi1_ref_idx_l1, pi1_lft_cxt, 516 pi1_top_cxt, ps_cab_env, ps_bitstrm, 517 ps_dec->p_ref_idx_t); 518 if(ret != OK) 519 return ret; 520 } 521 /* Read MotionVectors */ 522 { 523 const UWORD8 *pu1_top_left_sub_mb_indx; 524 UWORD8 uc_j, uc_lx; 525 UWORD8 u1_mb_part_wd, u1_mb_part_ht; 526 527 const UWORD8 *pu1_sub_mb_indx_mod = 528 (const UWORD8 *)gau1_ih264d_submb_indx_mod 529 + (u1_sub_mb * 6); 530 const UWORD8 *pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw; 531 const UWORD8 *pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth; 532 const UWORD8 *pu1_num_sub_mb_part = 533 (const UWORD8 *)gau1_ih264d_num_submb_part; 534 const UWORD8 *pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw; 535 const UWORD8 *pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth; 536 537 UWORD8 u1_p_idx = 0; 538 UWORD8 u1_num_submb_part; 539 parse_part_params_t *ps_part; 540 /* Initialisations */ 541 mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4); 542 ps_part = ps_dec->ps_part; 543 544 /* Default initialization for non subMb case */ 545 u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode]; 546 u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode]; 547 u1_num_submb_part = 1; 548 549 /* Decoding the MV for the subMB */ 550 for(uc_lx = 0; uc_lx < 2; uc_lx++) 551 { 552 UWORD8 u1_sub_mb_num = 0; 553 UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode; 554 UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode; 555 UWORD8 u1_mb_mc_mode_1, u1_pred_mode, uc_i; 556 UWORD16 u2_sub_mb_num = 0x028A; 557 UWORD8 u1_b2 = uc_lx << 1; 558 u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0; 559 /* Default for Cabac */ 560 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1); 561 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) 562 { 563 564 WORD8 i1_pred = (UWORD8)(u4_mb_pred_mode_tmp >> 24); 565 u1_mb_mc_mode_1 = (UWORD8)(u4_mb_mc_mode_tmp >> 24); 566 u4_mb_pred_mode_tmp <<= 8; 567 u4_mb_mc_mode_tmp <<= 8; 568 569 /* subMb prediction mode */ 570 if(u1_sub_mb) 571 { 572 u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode_1]; 573 u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode_1]; 574 u1_sub_mb_num = u2_sub_mb_num >> 12; 575 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode_1 << 1); 576 u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode_1]; 577 u2_sub_mb_num = u2_sub_mb_num << 4; 578 } 579 580 for(uc_j = 0; uc_j < u1_num_submb_part; 581 uc_j++, pu1_top_left_sub_mb_indx++) 582 { 583 mv_pred_t *ps_mv; 584 u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx; 585 ps_mv = ps_mv_start + u1_sub_mb_num; 586 587 /* Storing Info for partitions, writing only once */ 588 if(uc_lx) 589 { 590 ps_part->u1_is_direct = (!i1_pred); 591 ps_part->u1_pred_mode = i1_pred; 592 ps_part->u1_sub_mb_num = u1_sub_mb_num; 593 ps_part->u1_partheight = u1_mb_part_ht; 594 ps_part->u1_partwidth = u1_mb_part_wd; 595 596 /* Increment partition Index */ 597 u1_p_idx++; 598 ps_part++; 599 } 600 601 ih264d_get_mvd_cabac(u1_sub_mb_num, u1_b2, u1_mb_part_wd, 602 u1_mb_part_ht, 603 (UWORD8)(i1_pred & u1_pred_mode), ps_dec, 604 ps_mv); 605 } 606 } 607 } 608 /* write back to the scratch partition info */ 609 610 ps_dec->ps_part = ps_part; 611 ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part; 612 613 } 614 615 return OK; 616} 617 618/*! 619 ************************************************************************** 620 * \if Function name : ih264d_parse_bmb_cabac \endif 621 * 622 * \brief 623 * This function parses CABAC syntax of a B MB. 624 * 625 * \return 626 * 0 on Success and Error code otherwise 627 ************************************************************************** 628 */ 629WORD32 ih264d_parse_bmb_cabac(dec_struct_t * ps_dec, 630 dec_mb_info_t * ps_cur_mb_info, 631 UWORD8 u1_mb_num, 632 UWORD8 u1_num_mbsNby2) 633{ 634 UWORD8 u1_cbp; 635 deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num; 636 const UWORD8 *puc_mb_mc_mode = (const UWORD8 *)gau1_ih264d_mb_mc_mode; 637 UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; 638 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; 639 640 WORD32 ret; 641 UWORD8 u1_Bdirect_tranform_read = 1; 642 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1; 643 644 ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type]; 645 646 ps_cur_mb_info->u1_yuv_dc_block_flag = 0; 647 648 ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE; 649 if(u1_mb_type != B_DIRECT) 650 { 651 ret = ih264d_parse_bmb_non_direct_cabac(ps_dec, ps_cur_mb_info, u1_mb_num, 652 u1_num_mbsNby2); 653 if(ret != OK) 654 return ret; 655 } 656 else 657 { 658 659 /************ STORING PARTITION INFO ***********/ 660 parse_part_params_t * ps_part_info; 661 ps_part_info = ps_dec->ps_part; 662 ps_part_info->u1_is_direct = PART_DIRECT_16x16; 663 ps_part_info->u1_sub_mb_num = 0; 664 ps_dec->ps_part++; 665 p_curr_ctxt->u1_mb_type = CAB_BD16x16; 666 667 MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0); 668 memset(ps_dec->pi1_left_ref_idx_ctxt_inc, 0, 4); 669 MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0); 670 memset(p_curr_ctxt->i1_ref_idx, 0, 4); 671 672 /* check whether transform8x8 u4_flag to be read or not */ 673 u1_Bdirect_tranform_read = 674 ps_dec->s_high_profile.u1_direct_8x8_inference_flag; 675 } 676 677 /* Read the Coded block pattern */ 678 u1_cbp = (WORD8)ih264d_parse_ctx_cbp_cabac(ps_dec); 679 p_curr_ctxt->u1_cbp = u1_cbp; 680 ps_cur_mb_info->u1_cbp = u1_cbp; 681 682 if(u1_cbp > 47) 683 return ERROR_CBP; 684 685 COPYTHECONTEXT("coded_block_pattern", u1_cbp); 686 687 ps_cur_mb_info->u1_tran_form8x8 = 0; 688 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 689 690 if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & (0xf)) 691 && (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) 692 && (u1_Bdirect_tranform_read)) 693 { 694 ps_cur_mb_info->u1_tran_form8x8 = ih264d_parse_transform8x8flag_cabac( 695 ps_dec, ps_cur_mb_info); 696 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8); 697 698 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; 699 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8; 700 } 701 else 702 { 703 p_curr_ctxt->u1_transform8x8_ctxt = 0; 704 } 705 706 p_curr_ctxt->u1_intra_chroma_pred_mode = 0; 707 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE; 708 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6; 709 710 /* Read mb_qp_delta */ 711 if(u1_cbp) 712 { 713 WORD8 c_temp; 714 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &c_temp); 715 if(ret != OK) 716 return ret; 717 COPYTHECONTEXT("mb_qp_delta", c_temp); 718 if(c_temp) 719 { 720 ret = ih264d_update_qp(ps_dec, c_temp); 721 if(ret != OK) 722 return ret; 723 } 724 } 725 else 726 ps_dec->i1_prev_mb_qp_delta = 0; 727 728 ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, 0); 729 if(EXCEED_OFFSET(ps_dec->ps_bitstrm)) 730 return ERROR_EOB_TERMINATE_T; 731 return OK; 732} 733/*! 734 ************************************************************************** 735 * \if Function name : ih264d_parse_bmb_cavlc \endif 736 * 737 * \brief 738 * This function parses CAVLC syntax of a B MB. 739 * 740 * \return 741 * 0 on Success and Error code otherwise 742 ************************************************************************** 743 */ 744WORD32 ih264d_parse_bmb_cavlc(dec_struct_t * ps_dec, 745 dec_mb_info_t * ps_cur_mb_info, 746 UWORD8 u1_mb_num, 747 UWORD8 u1_num_mbsNby2) 748{ 749 UWORD32 u4_cbp; 750 deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num; 751 dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; 752 UWORD32 * pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 753 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 754 const UWORD8 *puc_mb_mc_mode = (const UWORD8 *)gau1_ih264d_mb_mc_mode; 755 UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type; 756 757 WORD32 ret; 758 UWORD8 u1_Bdirect_tranform_read = 1; 759 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1; 760 ps_cur_mb_info->u1_tran_form8x8 = 0; 761 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 762 763 ps_cur_mb_info->u1_yuv_dc_block_flag = 0; 764 765 ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type]; 766 767 ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE; 768 if(u1_mb_type != B_DIRECT) 769 { 770 ret = ih264d_parse_bmb_non_direct_cavlc(ps_dec, ps_cur_mb_info, u1_mb_num, 771 u1_num_mbsNby2); 772 if(ret != OK) 773 return ret; 774 } 775 else 776 { 777 /************ STORING PARTITION INFO ***********/ 778 parse_part_params_t * ps_part_info; 779 ps_part_info = ps_dec->ps_part; 780 ps_part_info->u1_is_direct = PART_DIRECT_16x16; 781 ps_part_info->u1_sub_mb_num = 0; 782 ps_dec->ps_part++; 783 /* check whether transform8x8 u4_flag to be read or not */ 784 u1_Bdirect_tranform_read = 785 ps_dec->s_high_profile.u1_direct_8x8_inference_flag; 786 } 787 788 /* Read the Coded block pattern */ 789 { 790 const UWORD8 * puc_CbpInter = gau1_ih264d_cbp_inter; 791//Inlined ih264d_uev 792 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 793 UWORD32 u4_word, u4_ldz; 794 795 /***************************************************************/ 796 /* Find leading zeros in next 32 bits */ 797 /***************************************************************/ 798 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 799 u4_ldz = CLZ(u4_word); 800 /* Flush the ps_bitstrm */ 801 u4_bitstream_offset += (u4_ldz + 1); 802 /* Read the suffix from the ps_bitstrm */ 803 u4_word = 0; 804 if(u4_ldz) 805 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); 806 *pu4_bitstrm_ofst = u4_bitstream_offset; 807 u4_cbp = ((1 << u4_ldz) + u4_word - 1); 808//Inlined ih264d_uev 809 if(u4_cbp > 47) 810 return ERROR_CBP; 811 u4_cbp = puc_CbpInter[u4_cbp]; 812 813 if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & (0xf)) 814 && (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) 815 && (u1_Bdirect_tranform_read)) 816 { 817 ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm); 818 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8); 819 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; 820 } 821 822 } 823 824 COPYTHECONTEXT("coded_block_pattern", u4_cbp); 825 ps_cur_mb_info->u1_cbp = u4_cbp; 826 827 /* Read mb_qp_delta */ 828 if(u4_cbp) 829 { 830 WORD32 i_temp; 831//inlining ih264d_sev 832 833 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 834 UWORD32 u4_word, u4_ldz, u4_abs_val; 835 836 /***************************************************************/ 837 /* Find leading zeros in next 32 bits */ 838 /***************************************************************/ 839 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 840 u4_ldz = CLZ(u4_word); 841 842 /* Flush the ps_bitstrm */ 843 u4_bitstream_offset += (u4_ldz + 1); 844 845 /* Read the suffix from the ps_bitstrm */ 846 u4_word = 0; 847 if(u4_ldz) 848 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); 849 850 *pu4_bitstrm_ofst = u4_bitstream_offset; 851 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; 852 853 if(u4_word & 0x1) 854 i_temp = (-(WORD32)u4_abs_val); 855 else 856 i_temp = (u4_abs_val); 857 858 if(i_temp < -26 || i_temp > 25) 859 return ERROR_INV_RANGE_QP_T; 860//inlinined ih264d_sev 861 COPYTHECONTEXT("mb_qp_delta", i_temp); 862 if(i_temp) 863 { 864 ret = ih264d_update_qp(ps_dec, (WORD8)i_temp); 865 if(ret != OK) 866 return ret; 867 } 868 869 ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0); 870 if(ret != OK) 871 return ret; 872 if(EXCEED_OFFSET(ps_bitstrm)) 873 return ERROR_EOB_TERMINATE_T; 874 } 875 else 876 { 877 ps_dec->i1_prev_mb_qp_delta = 0; 878 ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); 879 } 880 881 return OK; 882} 883 884WORD32 ih264d_mv_pred_ref_tfr_nby2_bmb(dec_struct_t * ps_dec, 885 UWORD8 u1_mb_idx, 886 UWORD8 u1_num_mbs) 887{ 888 parse_pmbarams_t * ps_mb_part_info; 889 parse_part_params_t * ps_part; 890 mv_pred_t *ps_mv_nmb, *ps_mv_nmb_start, *ps_mv_ntop, *ps_mv_ntop_start; 891 pic_buffer_t * ps_ref_frame; 892 UWORD8 u1_direct_mode_width; 893 UWORD8 i, j; 894 dec_mb_info_t * ps_cur_mb_info; 895 const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; 896 UWORD8 u1_field; 897 WORD32 ret = 0; 898 899 ps_dec->i4_submb_ofst -= (u1_num_mbs - u1_mb_idx) << 4; 900 ps_mb_part_info = ps_dec->ps_parse_mb_data; 901 ps_part = ps_dec->ps_parse_part_params; 902 903 /* N/2 Mb MvPred and Transfer Setup Loop */ 904 for(i = u1_mb_idx; i < u1_num_mbs; i++, ps_mb_part_info++) 905 { 906 UWORD8 u1_colz = 0; 907 ps_dec->i4_submb_ofst += SUB_BLK_SIZE; 908 /* Restore the slice scratch MbX and MbY context */ 909 ps_cur_mb_info = ps_dec->ps_nmb_info + i; 910 911 912 u1_field = ps_cur_mb_info->u1_mb_field_decodingflag; 913 914 ps_mv_nmb_start = ps_dec->ps_mv_cur + (i << 4); 915 ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx; 916 ps_dec->u2_mby = ps_cur_mb_info->u2_mby; 917 ps_dec->u1_currB_type = 0; 918 ps_dec->u2_mv_2mb[i & 0x1] = 0; 919 920 /* Look for MV Prediction and Reference Transfer in Non-I Mbs */ 921 if(!ps_mb_part_info->u1_isI_mb) 922 { 923 UWORD8 u1_blk_no; 924 WORD16 i1_ref_idx, i1_ref_idx1; 925 UWORD8 u1_pred_mode; 926 UWORD8 u1_sub_mb_x, u1_sub_mb_y, u1_sub_mb_num; 927 UWORD8 u1_lx, u1_lx_start, u1_lxend, u1_tmp_lx; 928 UWORD8 u1_num_part, u1_num_ref, u1_wd, u1_ht; 929 UWORD32 *pu4_wt_offst; 930 UWORD8 u1_scale_ref, u4_bot_mb; 931 deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + i; 932 WORD8 (*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = 933 ps_mb_part_info->i1_ref_idx; 934 WORD8 *pi1_ref_idx0 = pi1_ref_idx[0], 935 *pi1_ref_idx1 = pi1_ref_idx[1]; 936 UWORD32 **ppu4_wt_ofst = ps_mb_part_info->pu4_wt_offst; 937 938 /* MB Level initialisations */ 939 ps_dec->u4_num_pmbair = i >> u1_mbaff; 940 ps_dec->u1_mb_idx_mv = i; 941 942 /* CHANGED CODE */ 943 ps_mv_ntop_start = ps_mv_nmb_start 944 - (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12; 945 946 u1_num_part = ps_mb_part_info->u1_num_part; 947 ps_cur_deblk_mb->u1_mb_type |= (u1_num_part > 1) << 1; 948 u1_direct_mode_width = (1 == ps_mb_part_info->u1_num_part) ? 16 : 8; 949 950 951 ps_cur_mb_info->u4_pred_info_pkd_idx = ps_dec->u4_pred_info_pkd_idx; 952 ps_cur_mb_info->u1_num_pred_parts = 0; 953 954 /****************************************************/ 955 /* weighted u4_ofst pointer calculations, this loop */ 956 /* runs maximum 4 times, even in direct cases */ 957 /****************************************************/ 958 u1_scale_ref = u1_mbaff & ps_cur_mb_info->u1_mb_field_decodingflag; 959 u4_bot_mb = 1 - ps_cur_mb_info->u1_topmb; 960 if(ps_dec->ps_cur_pps->u1_wted_bipred_idc) 961 { 962 u1_num_ref = MIN(u1_num_part, 4); 963 if(PART_DIRECT_16x16 != ps_part->u1_is_direct) 964 { 965 for(u1_blk_no = 0; u1_blk_no < u1_num_ref; u1_blk_no++) 966 { 967 i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0); 968 if(u1_scale_ref) 969 i1_ref_idx >>= 1; 970 i1_ref_idx *= 971 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; 972 if(u1_scale_ref) 973 i1_ref_idx += 974 (MAX(pi1_ref_idx1[u1_blk_no], 0) 975 >> 1); 976 else 977 i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0); 978 pu4_wt_offst = (UWORD32*)&ps_dec->pu4_wt_ofsts[2 979 * X3(i1_ref_idx)]; 980 981 if(pi1_ref_idx0[u1_blk_no] < 0) 982 pu4_wt_offst += 1; 983 984 ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst; 985 if(u1_scale_ref 986 && (ps_dec->ps_cur_pps->u1_wted_bipred_idc 987 == 2)) 988 { 989 i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0); 990 i1_ref_idx *= 991 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] 992 << 1); 993 i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0); 994 if(u4_bot_mb) 995 { 996 i1_ref_idx += 997 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] 998 << 1) 999 * (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] 1000 << 1); 1001 } 1002 pu4_wt_offst = (UWORD32*)&ps_dec->pu4_mbaff_wt_mat[2 1003 * X3(i1_ref_idx)]; 1004 ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst; 1005 } 1006 } 1007 } 1008 } 1009 1010 /**************************************************/ 1011 /* Loop on Partitions */ 1012 /* direct mode is reflected as a single partition */ 1013 /**************************************************/ 1014 for(j = 0; j < u1_num_part; j++, ps_part++) 1015 { 1016 u1_sub_mb_num = ps_part->u1_sub_mb_num; 1017 ps_dec->u1_sub_mb_num = u1_sub_mb_num; 1018 1019 if(PART_NOT_DIRECT != ps_part->u1_is_direct) 1020 { 1021 /**************************************************/ 1022 /* Direct Mode, Call DecodeSpatial/TemporalDirect */ 1023 /* only (those will in turn call FormMbPartInfo) */ 1024 /**************************************************/ 1025 ret = ps_dec->ps_cur_slice->pf_decodeDirect(ps_dec, 1026 u1_direct_mode_width, 1027 ps_cur_mb_info, i); 1028 if(ret != OK) 1029 return ret; 1030 ps_cur_deblk_mb->u1_mb_type |= (ps_dec->u1_currB_type << 1); 1031 1032 } 1033 else 1034 { 1035 mv_pred_t s_mvPred; 1036 /**************************************************/ 1037 /* Non Direct Mode, Call Motion Vector Predictor */ 1038 /* and FormMbpartInfo */ 1039 /**************************************************/ 1040 u1_sub_mb_x = u1_sub_mb_num & 0x03; 1041 u1_sub_mb_y = u1_sub_mb_num >> 2; 1042 u1_blk_no = 1043 (u1_num_part < 4) ? 1044 j : 1045 (((u1_sub_mb_y >> 1) << 1) 1046 + (u1_sub_mb_x 1047 >> 1)); 1048 1049 ps_mv_ntop = ps_mv_ntop_start + u1_sub_mb_x; 1050 ps_mv_nmb = ps_mv_nmb_start + u1_sub_mb_num; 1051 1052 u1_pred_mode = ps_part->u1_pred_mode; 1053 u1_wd = ps_part->u1_partwidth; 1054 u1_ht = ps_part->u1_partheight; 1055 1056 u1_lx_start = 0; 1057 u1_lxend = 2; 1058 if( PRED_L0 == u1_pred_mode) 1059 { 1060 s_mvPred.i2_mv[2] = 0; 1061 s_mvPred.i2_mv[3] = 0; 1062 u1_lxend = 1; 1063 } 1064 if( PRED_L1 == u1_pred_mode) 1065 { 1066 s_mvPred.i2_mv[0] = 0; 1067 s_mvPred.i2_mv[1] = 0; 1068 u1_lx_start = 1; 1069 } 1070 1071 /* Populate the colpic info and reference frames */ 1072 s_mvPred.i1_ref_frame[0] = pi1_ref_idx0[u1_blk_no]; 1073 s_mvPred.i1_ref_frame[1] = pi1_ref_idx1[u1_blk_no]; 1074 1075 ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb, ps_mv_ntop, 1076 &s_mvPred, u1_sub_mb_num, u1_wd, 1077 u1_lx_start, u1_lxend, 1078 ps_cur_mb_info->u1_mb_mc_mode); 1079 1080 /**********************************************************/ 1081 /* Loop on number of predictors, 1 Each for Forw Backw */ 1082 /* Loop 2 times for BiDirect mode */ 1083 /**********************************************************/ 1084 for(u1_lx = u1_lx_start; u1_lx < u1_lxend; u1_lx++) 1085 { 1086 WORD16 i2_mv_x, i2_mv_y; 1087 1088 /********************************************************/ 1089 /* Predict Mv */ 1090 /* Add Mv Residuals and store back */ 1091 /********************************************************/ 1092 i1_ref_idx = s_mvPred.i1_ref_frame[u1_lx]; 1093 u1_tmp_lx = (u1_lx << 1); 1094 1095 i2_mv_x = ps_mv_nmb->i2_mv[u1_tmp_lx]; 1096 i2_mv_y = ps_mv_nmb->i2_mv[u1_tmp_lx + 1]; 1097 1098 i2_mv_x += s_mvPred.i2_mv[u1_tmp_lx]; 1099 i2_mv_y += s_mvPred.i2_mv[u1_tmp_lx + 1]; 1100 s_mvPred.i2_mv[u1_tmp_lx] = i2_mv_x; 1101 s_mvPred.i2_mv[u1_tmp_lx + 1] = i2_mv_y; 1102 1103 /********************************************************/ 1104 /* Transfer setup call */ 1105 /* convert RefIdx if it is MbAff */ 1106 /* Pass Weight Offset and refFrame */ 1107 /********************************************************/ 1108 i1_ref_idx1 = i1_ref_idx >> u1_scale_ref; 1109 if(u1_scale_ref && ((i1_ref_idx & 0x01) != u4_bot_mb)) 1110 i1_ref_idx1 += MAX_REF_BUFS; 1111 ps_ref_frame = 1112 ps_dec->ps_ref_pic_buf_lx[u1_lx][i1_ref_idx1]; 1113 1114 /* Storing Colocated-Zero u4_flag */ 1115 if(u1_lx == u1_lx_start) 1116 { 1117 /* Fill colocated info in MvPred structure */ 1118 s_mvPred.u1_col_ref_pic_idx = 1119 ps_ref_frame->u1_mv_buf_id; 1120 s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type; 1121 1122 /* Calculating colocated zero information */ 1123 u1_colz = 1124 (u1_field << 1) 1125 | ((i1_ref_idx == 0) 1126 && (ABS(i2_mv_x) 1127 <= 1) 1128 && (ABS(i2_mv_y) 1129 <= 1)); 1130 u1_colz |= ps_mb_part_info->u1_col_info[u1_blk_no]; 1131 } 1132 1133 pu4_wt_offst = ppu4_wt_ofst[u1_blk_no]; 1134 { 1135 pred_info_pkd_t *ps_pred_pkd; 1136 WORD16 i2_mv[2]; 1137 1138 i2_mv[0] = i2_mv_x; 1139 i2_mv[1] = i2_mv_y; 1140 1141 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx; 1142 ih264d_fill_pred_info(i2_mv,u1_wd,u1_ht,u1_sub_mb_num,u1_pred_mode, 1143 ps_pred_pkd,ps_ref_frame->u1_pic_buf_id,i1_ref_idx,pu4_wt_offst, 1144 ps_ref_frame->u1_pic_type); 1145 ps_dec->u4_pred_info_pkd_idx++; 1146 ps_cur_mb_info->u1_num_pred_parts++; 1147 1148 1149 } 1150 1151 } 1152 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb, 1153 u1_sub_mb_num, u1_colz, u1_ht, 1154 u1_wd); 1155 } 1156 } 1157 1158 } 1159 else 1160 { 1161 /* Set zero values in case of Intra Mbs */ 1162 mv_pred_t s_mvPred = 1163 { 1164 { 0, 0, 0, 0 }, 1165 { -1, -1 }, 0, 0}; 1166 /* Storing colocated zero information */ 1167 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, 1168 (UWORD8)(u1_field << 1), 4, 4); 1169 } 1170 1171 /*if num _cores is set to 3 ,compute bs will be done in another thread*/ 1172 if(ps_dec->u4_num_cores < 3) 1173 { 1174 if(ps_dec->u4_app_disable_deblk_frm == 0) 1175 ps_dec->pf_compute_bs(ps_dec, ps_cur_mb_info, 1176 (UWORD16)(i >> u1_mbaff)); 1177 } 1178 } 1179 return OK; 1180} 1181/*! 1182 ************************************************************************** 1183 * \if Function name : ih264d_get_implicit_weights \endif 1184 * 1185 * \brief 1186 * Calculates Implicit Weights. 1187 * 1188 * \return 1189 * None 1190 * 1191 ************************************************************************** 1192 */ 1193void ih264d_get_implicit_weights(dec_struct_t *ps_dec) 1194{ 1195 UWORD32 *pu4_iwt_ofst; 1196 UWORD8 i, j; 1197 struct pic_buffer_t *ps_pic_buff0, *ps_pic_buff1; 1198 WORD16 i2_dist_scale_factor; 1199 WORD16 i16_tb, i16_td, i16_tx; 1200 UWORD32 u4_poc0, u4_poc1; 1201 UWORD32 ui_temp0, ui_temp1; 1202 UWORD8 uc_num_ref_idx_l0_active, uc_num_ref_idx_l1_active; 1203 1204 pu4_iwt_ofst = ps_dec->pu4_wts_ofsts_mat; 1205 uc_num_ref_idx_l0_active = 1206 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; 1207 uc_num_ref_idx_l1_active = 1208 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; 1209 1210 for(i = 0; i < uc_num_ref_idx_l0_active; i++) 1211 { 1212 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][i]; 1213 u4_poc0 = ps_pic_buff0->i4_avg_poc; 1214 for(j = 0; j < uc_num_ref_idx_l1_active; j++) 1215 { 1216 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][j]; 1217 u4_poc1 = ps_pic_buff1->i4_avg_poc; 1218 1219 if(u4_poc1 != u4_poc0) 1220 { 1221 i16_tb = ps_dec->ps_cur_pic->i4_poc - u4_poc0; 1222 i16_tb = CLIP3(-128, 127, i16_tb); 1223 i16_td = u4_poc1 - u4_poc0; 1224 i16_td = CLIP3(-128, 127, i16_td); 1225 i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1))) / i16_td; 1226 i2_dist_scale_factor = CLIP3(-1024, 1023, 1227 (((i16_tb * i16_tx) + 32) >> 6)); 1228 1229 if(/*((u4_poc1 - u4_poc0) == 0) ||*/ 1230 (!(ps_pic_buff1->u1_is_short && ps_pic_buff0->u1_is_short)) 1231 || ((i2_dist_scale_factor >> 2) < -64) 1232 || ((i2_dist_scale_factor >> 2) > 128)) 1233 { 1234 /* same for forward and backward, wt=32 and Offset = 0 */ 1235 ui_temp0 = 0x00000020; 1236 ui_temp1 = 0x00000020; 1237 } 1238 else 1239 { 1240 ui_temp0 = 64 - (i2_dist_scale_factor >> 2); 1241 ui_temp1 = (i2_dist_scale_factor >> 2); 1242 } 1243 } 1244 else 1245 { 1246 ui_temp0 = 0x00000020; 1247 ui_temp1 = 0x00000020; 1248 } 1249 pu4_iwt_ofst[0] = pu4_iwt_ofst[2] = pu4_iwt_ofst[4] = ui_temp0; 1250 pu4_iwt_ofst[1] = pu4_iwt_ofst[3] = pu4_iwt_ofst[5] = ui_temp1; 1251 pu4_iwt_ofst += 6; 1252 } 1253 } 1254 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) 1255 { 1256 UWORD8 k; 1257 WORD32 i4_cur_poc = ps_dec->ps_cur_pic->i4_top_field_order_cnt; 1258 UWORD32* pu4_wt_mat = ps_dec->pu4_mbaff_wt_mat; 1259 /* Form the Implicit Weighted prediction matrix for field MBs also */ 1260 for(k = 0; k < 2; k++) 1261 { 1262 for(i = 0; i < (uc_num_ref_idx_l0_active << 1); i++) 1263 { 1264 UWORD16 u2_l0_idx; 1265 1266 /*u2_l0_idx = (i >= uc_num_ref_idx_l0_active) 1267 ?(MAX_REF_BUFS + i - uc_num_ref_idx_l0_active) : (i) ;*/ 1268 1269 u2_l0_idx = i >> 1; 1270 if((i & 0x01) != k) 1271 { 1272 u2_l0_idx += MAX_REF_BUFS; 1273 } 1274 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][u2_l0_idx]; 1275 u4_poc0 = ps_pic_buff0->i4_poc; 1276 for(j = 0; j < (uc_num_ref_idx_l1_active << 1); j++) 1277 { 1278 UWORD16 u2_l1_idx; 1279 /*u2_l1_idx = (j >= uc_num_ref_idx_l1_active) 1280 ? (MAX_REF_BUFS + j - uc_num_ref_idx_l1_active ) : (j) ;*/ 1281 1282 u2_l1_idx = j >> 1; 1283 if((j & 0x01) != k) 1284 { 1285 u2_l1_idx += MAX_REF_BUFS; 1286 } 1287 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][u2_l1_idx]; 1288 u4_poc1 = ps_pic_buff1->i4_poc; 1289 if(u4_poc1 != u4_poc0) 1290 { 1291 i16_tb = i4_cur_poc - u4_poc0; 1292 i16_tb = CLIP3(-128, 127, i16_tb); 1293 i16_td = u4_poc1 - u4_poc0; 1294 i16_td = CLIP3(-128, 127, i16_td); 1295 i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1))) 1296 / i16_td; 1297 i2_dist_scale_factor = CLIP3( 1298 -1024, 1023, 1299 (((i16_tb * i16_tx) + 32) >> 6)); 1300 1301 if(/*((u4_poc1 - u4_poc0) == 0) ||*/ 1302 (!(ps_pic_buff1->u1_is_short && ps_pic_buff0->u1_is_short)) 1303 || ((i2_dist_scale_factor >> 2) < -64) 1304 || ((i2_dist_scale_factor >> 2) > 128)) 1305 { 1306 /* same for forward and backward, wt=32 and Offset = 0 */ 1307 ui_temp0 = 0x00000020; 1308 ui_temp1 = 0x00000020; 1309 } 1310 else 1311 { 1312 ui_temp0 = 64 - (i2_dist_scale_factor >> 2); 1313 ui_temp1 = (i2_dist_scale_factor >> 2); 1314 } 1315 } 1316 else 1317 { 1318 ui_temp0 = 0x00000020; 1319 ui_temp1 = 0x00000020; 1320 } 1321 /* Store in the weight matrix */ 1322 *pu4_wt_mat++ = ui_temp0; 1323 *pu4_wt_mat++ = ui_temp1; 1324 *pu4_wt_mat++ = ui_temp0; 1325 *pu4_wt_mat++ = ui_temp1; 1326 *pu4_wt_mat++ = ui_temp0; 1327 *pu4_wt_mat++ = ui_temp1; 1328 1329 } 1330 } 1331 i4_cur_poc = ps_dec->ps_cur_pic->i4_bottom_field_order_cnt; 1332 } 1333 } 1334} 1335 1336/*! 1337 ************************************************************************** 1338 * \if Function name : ih264d_decode_bslice \endif 1339 * 1340 * \brief 1341 * Decodes a B Slice 1342 * 1343 * 1344 * \return 1345 * 0 on Success and Error code otherwise 1346 ************************************************************************** 1347 */ 1348WORD32 ih264d_parse_bslice(dec_struct_t * ps_dec, UWORD16 u2_first_mb_in_slice) 1349{ 1350 dec_pic_params_t * ps_pps = ps_dec->ps_cur_pps; 1351 dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice; 1352 dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm; 1353 UWORD8 u1_ref_idx_re_flag_lx; 1354 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 1355 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 1356 1357 UWORD32 u4_temp, ui_temp1; 1358 WORD32 i_temp; 1359 WORD32 ret; 1360 1361 /*--------------------------------------------------------------------*/ 1362 /* Read remaining contents of the slice header */ 1363 /*--------------------------------------------------------------------*/ 1364 { 1365 WORD8 *pi1_buf; 1366 WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv; 1367 WORD32 *pi4_mv = (WORD32*)pi2_mv; 1368 WORD16 *pi16_refFrame; 1369 pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame; 1370 pi16_refFrame = (WORD16*)pi1_buf; 1371 *pi4_mv = 0; 1372 *(pi4_mv + 1) = 0; 1373 *pi16_refFrame = OUT_OF_RANGE_REF; 1374 ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8)-1; 1375 ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8)-1; 1376 } 1377 1378 ps_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264( 1379 ps_bitstrm); 1380 COPYTHECONTEXT("SH: num_ref_idx_override_flag", 1381 ps_slice->u1_num_ref_idx_active_override_flag); 1382 1383 u4_temp = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0]; 1384 ui_temp1 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[1]; 1385 if(ps_slice->u1_num_ref_idx_active_override_flag) 1386 { 1387 u4_temp = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1388 COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1", 1389 u4_temp - 1); 1390 ui_temp1 = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1391 COPYTHECONTEXT("SH: num_ref_idx_l1_active_minus1", 1392 ui_temp1 - 1); 1393 } 1394 1395 { 1396 UWORD8 u1_max_ref_idx = MAX_FRAMES; 1397 if(ps_slice->u1_field_pic_flag) 1398 { 1399 u1_max_ref_idx = MAX_FRAMES << 1; 1400 } 1401 if((u4_temp > u1_max_ref_idx) || (ui_temp1 > u1_max_ref_idx)) 1402 { 1403 return ERROR_NUM_REF; 1404 } 1405 ps_slice->u1_num_ref_idx_lx_active[0] = u4_temp; 1406 ps_slice->u1_num_ref_idx_lx_active[1] = ui_temp1; 1407 } 1408 /* Initialize the Reference list once in Picture if the slice type */ 1409 /* of first slice is between 5 to 9 defined in table 7.3 of standard */ 1410 /* If picture contains both P & B slices then Initialize the Reference*/ 1411 /* List only when it switches from P to B and B to P */ 1412 1413 { 1414 UWORD8 init_idx_flg = (ps_dec->u1_pr_sl_type 1415 != ps_dec->ps_cur_slice->u1_slice_type); 1416 if(ps_dec->u1_first_pb_nal_in_pic 1417 || (init_idx_flg & !ps_dec->u1_sl_typ_5_9) 1418 || ps_dec->u1_num_ref_idx_lx_active_prev 1419 != ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]) 1420 ih264d_init_ref_idx_lx_b(ps_dec); 1421 if(ps_dec->u1_first_pb_nal_in_pic & ps_dec->u1_sl_typ_5_9) 1422 ps_dec->u1_first_pb_nal_in_pic = 0; 1423 } 1424 /* Store the value for future slices in the same picture */ 1425 ps_dec->u1_num_ref_idx_lx_active_prev = 1426 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; 1427 1428 u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm); 1429 COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0",u1_ref_idx_re_flag_lx); 1430 1431 /* Modified temporarily */ 1432 if(u1_ref_idx_re_flag_lx) 1433 { 1434 WORD8 ret; 1435 ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0]; 1436 ret = ih264d_ref_idx_reordering(ps_dec, 0); 1437 if(ret == -1) 1438 return ERROR_REFIDX_ORDER_T; 1439 } 1440 else 1441 ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0]; 1442 1443 u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm); 1444 COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l1",u1_ref_idx_re_flag_lx); 1445 1446 /* Modified temporarily */ 1447 if(u1_ref_idx_re_flag_lx) 1448 { 1449 WORD8 ret; 1450 ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_mod_dpb[1]; 1451 ret = ih264d_ref_idx_reordering(ps_dec, 1); 1452 if(ret == -1) 1453 return ERROR_REFIDX_ORDER_T; 1454 } 1455 else 1456 ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_init_dpb[1]; 1457 1458 /* Create refIdx to POC mapping */ 1459 { 1460 void **ppv_map_ref_idx_to_poc_lx; 1461 WORD8 idx; 1462 struct pic_buffer_t *ps_pic; 1463 1464 ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0; 1465 ppv_map_ref_idx_to_poc_lx[0] = 0; 1466 ppv_map_ref_idx_to_poc_lx++; 1467 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; 1468 idx++) 1469 { 1470 ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx]; 1471 ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1); 1472 } 1473 1474 ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1; 1475 1476 ppv_map_ref_idx_to_poc_lx[0] = 0; 1477 ppv_map_ref_idx_to_poc_lx++; 1478 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; 1479 idx++) 1480 { 1481 ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx]; 1482 ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1); 1483 } 1484 1485 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) 1486 { 1487 void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b; 1488 1489 ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc 1490 + TOP_LIST_FLD_L0; 1491 ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc 1492 + BOT_LIST_FLD_L0; 1493 1494 ppv_map_ref_idx_to_poc_lx_t[0] = 0; 1495 ppv_map_ref_idx_to_poc_lx_t++; 1496 ppv_map_ref_idx_to_poc_lx_b[0] = 0; 1497 ppv_map_ref_idx_to_poc_lx_b++; 1498 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; 1499 idx++) 1500 { 1501 ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx]; 1502 ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1); 1503 ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1); 1504 1505 ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1; 1506 ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1; 1507 1508 ppv_map_ref_idx_to_poc_lx_t += 2; 1509 ppv_map_ref_idx_to_poc_lx_b += 2; 1510 } 1511 1512 ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc 1513 + TOP_LIST_FLD_L1; 1514 ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc 1515 + BOT_LIST_FLD_L1; 1516 1517 ppv_map_ref_idx_to_poc_lx_t[0] = 0; 1518 ppv_map_ref_idx_to_poc_lx_t++; 1519 ppv_map_ref_idx_to_poc_lx_b[0] = 0; 1520 ppv_map_ref_idx_to_poc_lx_b++; 1521 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; 1522 idx++) 1523 { 1524 UWORD8 u1_tmp_idx = idx << 1; 1525 ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx]; 1526 ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx] = (ps_pic->pu1_buf1); 1527 ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx + 1] = (ps_pic->pu1_buf1); 1528 1529 ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx] = (ps_pic->pu1_buf1) + 1; 1530 ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx + 1] = (ps_pic->pu1_buf1) + 1; 1531 1532 } 1533 } 1534 1535 if(ps_dec->u4_num_cores >= 3) 1536 { 1537 WORD32 num_entries; 1538 WORD32 size; 1539 num_entries = MAX_FRAMES; 1540 if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && 1541 (0 == ps_dec->i4_display_delay)) 1542 { 1543 num_entries = 1; 1544 } 1545 1546 num_entries = ((2 * num_entries) + 1); 1547 if(BASE_PROFILE_IDC != ps_dec->ps_cur_sps->u1_profile_idc) 1548 { 1549 num_entries *= 2; 1550 } 1551 1552 size = num_entries * sizeof(void *); 1553 size += PAD_MAP_IDX_POC * sizeof(void *); 1554 1555 memcpy((void *)ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc, 1556 ps_dec->ppv_map_ref_idx_to_poc, 1557 size); 1558 } 1559 1560 } 1561 1562 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag 1563 && (ps_dec->ps_cur_slice->u1_field_pic_flag == 0)) 1564 { 1565 ih264d_convert_frm_mbaff_list(ps_dec); 1566 } 1567 1568 if(ps_pps->u1_wted_bipred_idc == 1) 1569 { 1570 ret = ih264d_parse_pred_weight_table(ps_slice, ps_bitstrm); 1571 if(ret != OK) 1572 return ret; 1573 ih264d_form_pred_weight_matrix(ps_dec); 1574 ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat; 1575 } 1576 else if(ps_pps->u1_wted_bipred_idc == 2) 1577 { 1578 /* Implicit Weighted prediction */ 1579 ps_slice->u2_log2Y_crwd = 0x0505; 1580 ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat; 1581 ih264d_get_implicit_weights(ps_dec); 1582 } 1583 else 1584 ps_dec->ps_cur_slice->u2_log2Y_crwd = 0; 1585 1586 ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = 1587 ps_dec->ps_cur_slice->u2_log2Y_crwd; 1588 1589 /* G050 */ 1590 if(ps_slice->u1_nal_ref_idc != 0) 1591 { 1592 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read) 1593 { 1594 i_temp = ih264d_read_mmco_commands(ps_dec); 1595 if (i_temp < 0) 1596 { 1597 return ERROR_DBP_MANAGER_T; 1598 } 1599 ps_dec->u4_bitoffset = i_temp; 1600 } 1601 else 1602 ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset; 1603 } 1604 /* G050 */ 1605 1606 if(ps_pps->u1_entropy_coding_mode == CABAC) 1607 { 1608 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1609 if(u4_temp > MAX_CABAC_INIT_IDC) 1610 { 1611 return ERROR_INV_SLICE_HDR_T; 1612 } 1613 ps_slice->u1_cabac_init_idc = u4_temp; 1614 COPYTHECONTEXT("SH: cabac_init_idc",ps_slice->u1_cabac_init_idc); 1615 } 1616 1617 /* Read slice_qp_delta */ 1618 i_temp = ps_pps->u1_pic_init_qp 1619 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1620 if((i_temp < 0) || (i_temp > 51)) 1621 { 1622 return ERROR_INV_RANGE_QP_T; 1623 } 1624 ps_slice->u1_slice_qp = i_temp; 1625 COPYTHECONTEXT("SH: slice_qp_delta", 1626 (WORD8)(ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp)); 1627 1628 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1) 1629 { 1630 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1631 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED) 1632 { 1633 return ERROR_INV_SLICE_HDR_T; 1634 } COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp); 1635 ps_slice->u1_disable_dblk_filter_idc = u4_temp; 1636 if(u4_temp != 1) 1637 { 1638 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) 1639 << 1; 1640 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF)) 1641 { 1642 return ERROR_INV_SLICE_HDR_T; 1643 } 1644 ps_slice->i1_slice_alpha_c0_offset = i_temp; 1645 COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2", 1646 ps_slice->i1_slice_alpha_c0_offset >> 1); 1647 1648 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) 1649 << 1; 1650 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF)) 1651 { 1652 return ERROR_INV_SLICE_HDR_T; 1653 } 1654 ps_slice->i1_slice_beta_offset = i_temp; 1655 COPYTHECONTEXT("SH: slice_beta_offset_div2", 1656 ps_slice->i1_slice_beta_offset >> 1); 1657 1658 } 1659 else 1660 { 1661 ps_slice->i1_slice_alpha_c0_offset = 0; 1662 ps_slice->i1_slice_beta_offset = 0; 1663 } 1664 } 1665 else 1666 { 1667 ps_slice->u1_disable_dblk_filter_idc = 0; 1668 ps_slice->i1_slice_alpha_c0_offset = 0; 1669 ps_slice->i1_slice_beta_offset = 0; 1670 } 1671 1672 ps_dec->u1_slice_header_done = 2; 1673 1674 if(ps_pps->u1_entropy_coding_mode) 1675 { 1676 SWITCHOFFTRACE; SWITCHONTRACECABAC; 1677 ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac; 1678 ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cabac; 1679 ih264d_init_cabac_contexts(B_SLICE, ps_dec); 1680 1681 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) 1682 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff; 1683 else 1684 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_nonmbaff; 1685 } 1686 else 1687 { 1688 SWITCHONTRACE; SWITCHOFFTRACECABAC; 1689 ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cavlc; 1690 ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cavlc; 1691 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) 1692 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff; 1693 else 1694 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff; 1695 } 1696 1697 ret = ih264d_cal_col_pic(ps_dec); 1698 if(ret != OK) 1699 return ret; 1700 ps_dec->u1_B = 1; 1701 ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_bmb; 1702 ret = ps_dec->pf_parse_inter_slice(ps_dec, ps_slice, u2_first_mb_in_slice); 1703 if(ret != OK) 1704 return ret; 1705 return OK; 1706} 1707 1708