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 ************************************************************************** 23 * \file ih264d_parse_islice.c 24 * 25 * \brief 26 * Contains routines that decode a I slice type 27 * 28 * Detailed_description 29 * 30 * \date 31 * 07/07/2003 32 * 33 * \author NS 34 ************************************************************************** 35 */ 36#include "ih264d_error_handler.h" 37#include "ih264d_debug.h" 38#include <string.h> 39#include "ih264d_bitstrm.h" 40#include "ih264d_defs.h" 41#include "ih264d_debug.h" 42#include "ih264d_tables.h" 43#include "ih264d_structs.h" 44#include "ih264d_defs.h" 45#include "ih264d_parse_cavlc.h" 46#include "ih264d_mb_utils.h" 47#include "ih264d_deblocking.h" 48#include "ih264d_cabac.h" 49#include "ih264d_parse_cabac.h" 50#include "ih264d_parse_mb_header.h" 51#include "ih264d_parse_slice.h" 52#include "ih264d_process_pslice.h" 53#include "ih264d_process_intra_mb.h" 54#include "ih264d_parse_islice.h" 55#include "ih264d_error_handler.h" 56#include "ih264d_mvpred.h" 57#include "ih264d_defs.h" 58#include "ih264d_thread_parse_decode.h" 59#include "ithread.h" 60#include "ih264d_parse_mb_header.h" 61#include "assert.h" 62#include "ih264d_utils.h" 63#include "ih264d_format_conv.h" 64 65void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec); 66 67void ih264d_itrans_recon_luma_dc(dec_struct_t *ps_dec, 68 WORD16* pi2_src, 69 WORD16* pi2_coeff_block, 70 const UWORD16 *pu2_weigh_mat); 71 72 73 74/*! 75 ************************************************************************** 76 * \if Function name : ParseIMb \endif 77 * 78 * \brief 79 * This function parses CAVLC syntax of a I MB. If 16x16 Luma DC transform 80 * is also done here. Transformed Luma DC values are copied in their 81 * 0th pixel location of corrosponding CoeffBlock. 82 * 83 * \return 84 * 0 on Success and Error code otherwise 85 ************************************************************************** 86 */ 87WORD32 ih264d_parse_imb_cavlc(dec_struct_t * ps_dec, 88 dec_mb_info_t * ps_cur_mb_info, 89 UWORD8 u1_mb_num, 90 UWORD8 u1_mb_type) 91{ 92 WORD32 i4_delta_qp; 93 UWORD32 u4_temp; 94 UWORD32 ui_is_top_mb_available; 95 UWORD32 ui_is_left_mb_available; 96 UWORD32 u4_cbp; 97 UWORD32 u4_offset; 98 UWORD32 *pu4_bitstrm_buf; 99 WORD32 ret; 100 101 dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; 102 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 103 UNUSED(u1_mb_num); 104 ps_cur_mb_info->u1_tran_form8x8 = 0; 105 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 106 107 ps_cur_mb_info->u1_yuv_dc_block_flag = 0; 108 109 u4_temp = ps_dec->u1_mb_ngbr_availablity; 110 ui_is_top_mb_available = BOOLEAN(u4_temp & TOP_MB_AVAILABLE_MASK); 111 ui_is_left_mb_available = BOOLEAN(u4_temp & LEFT_MB_AVAILABLE_MASK); 112 113 pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 114 115 if(u1_mb_type == I_4x4_MB) 116 { 117 ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB; 118 u4_offset = 0; 119 120 /*--------------------------------------------------------------------*/ 121 /* Read transform_size_8x8_flag if present */ 122 /*--------------------------------------------------------------------*/ 123 if(ps_dec->s_high_profile.u1_transform8x8_present) 124 { 125 ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm); 126 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8); 127 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; 128 } 129 130 /*--------------------------------------------------------------------*/ 131 /* Read the IntraPrediction modes for LUMA */ 132 /*--------------------------------------------------------------------*/ 133 if (!ps_cur_mb_info->u1_tran_form8x8) 134 { 135 UWORD8 *pu1_temp; 136 ih264d_read_intra_pred_modes(ps_dec, 137 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data), 138 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data+16), 139 ps_cur_mb_info->u1_tran_form8x8); 140 pu1_temp = (UWORD8 *)ps_dec->pv_parse_tu_coeff_data; 141 pu1_temp += 32; 142 ps_dec->pv_parse_tu_coeff_data = (void *)pu1_temp; 143 } 144 else 145 { 146 UWORD8 *pu1_temp; 147 ih264d_read_intra_pred_modes(ps_dec, 148 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data), 149 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data+4), 150 ps_cur_mb_info->u1_tran_form8x8); 151 pu1_temp = (UWORD8 *)ps_dec->pv_parse_tu_coeff_data; 152 pu1_temp += 8; 153 ps_dec->pv_parse_tu_coeff_data = (void *)pu1_temp; 154 } 155 /*--------------------------------------------------------------------*/ 156 /* Read the IntraPrediction mode for CHROMA */ 157 /*--------------------------------------------------------------------*/ 158//Inlined ih264d_uev 159 { 160 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 161 UWORD32 u4_word, u4_ldz, u4_temp; 162 163 /***************************************************************/ 164 /* Find leading zeros in next 32 bits */ 165 /***************************************************************/ 166 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 167 u4_ldz = CLZ(u4_word); 168 /* Flush the ps_bitstrm */ 169 u4_bitstream_offset += (u4_ldz + 1); 170 /* Read the suffix from the ps_bitstrm */ 171 u4_word = 0; 172 if(u4_ldz) 173 { 174 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 175 u4_ldz); 176 } 177 *pu4_bitstrm_ofst = u4_bitstream_offset; 178 u4_temp = ((1 << u4_ldz) + u4_word - 1); 179 if(u4_temp > 3) 180 { 181 return ERROR_CHROMA_PRED_MODE; 182 } 183 ps_cur_mb_info->u1_chroma_pred_mode = u4_temp; 184 COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode); 185 } 186 /*--------------------------------------------------------------------*/ 187 /* Read the Coded block pattern */ 188 /*--------------------------------------------------------------------*/ 189 { 190 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 191 UWORD32 u4_word, u4_ldz; 192 193 /***************************************************************/ 194 /* Find leading zeros in next 32 bits */ 195 /***************************************************************/ 196 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 197 u4_ldz = CLZ(u4_word); 198 /* Flush the ps_bitstrm */ 199 u4_bitstream_offset += (u4_ldz + 1); 200 /* Read the suffix from the ps_bitstrm */ 201 u4_word = 0; 202 if(u4_ldz) 203 { 204 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 205 u4_ldz); 206 } 207 *pu4_bitstrm_ofst = u4_bitstream_offset; 208 u4_cbp = ((1 << u4_ldz) + u4_word - 1); 209 } 210 if(u4_cbp > 47) 211 { 212 return ERROR_CBP; 213 } 214 215 u4_cbp = gau1_ih264d_cbp_table[u4_cbp][0]; 216 COPYTHECONTEXT("coded_block_pattern", u1_cbp); 217 ps_cur_mb_info->u1_cbp = u4_cbp; 218 219 /*--------------------------------------------------------------------*/ 220 /* Read mb_qp_delta */ 221 /*--------------------------------------------------------------------*/ 222 if(ps_cur_mb_info->u1_cbp) 223 { 224 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 225 UWORD32 u4_word, u4_ldz, u4_abs_val; 226 227 /***************************************************************/ 228 /* Find leading zeros in next 32 bits */ 229 /***************************************************************/ 230 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 231 u4_ldz = CLZ(u4_word); 232 233 /* Flush the ps_bitstrm */ 234 u4_bitstream_offset += (u4_ldz + 1); 235 236 /* Read the suffix from the ps_bitstrm */ 237 u4_word = 0; 238 if(u4_ldz) 239 { 240 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 241 u4_ldz); 242 } 243 244 *pu4_bitstrm_ofst = u4_bitstream_offset; 245 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; 246 247 if(u4_word & 0x1) 248 { 249 i4_delta_qp = (-(WORD32)u4_abs_val); 250 } 251 else 252 { 253 i4_delta_qp = (u4_abs_val); 254 } 255 256 if((i4_delta_qp < -26) || (i4_delta_qp > 25)) 257 { 258 return ERROR_INV_RANGE_QP_T; 259 } 260 261 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); 262 if(i4_delta_qp != 0) 263 { 264 ret = ih264d_update_qp(ps_dec, (WORD8)i4_delta_qp); 265 if(ret != OK) 266 return ret; 267 } 268 } 269 270 } 271 else 272 { 273 u4_offset = 1; 274 ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB; 275 /*-------------------------------------------------------------------*/ 276 /* Read the IntraPrediction mode for CHROMA */ 277 /*-------------------------------------------------------------------*/ 278 { 279 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 280 UWORD32 u4_word, u4_ldz; 281 282 /***************************************************************/ 283 /* Find leading zeros in next 32 bits */ 284 /***************************************************************/ 285 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 286 u4_ldz = CLZ(u4_word); 287 /* Flush the ps_bitstrm */ 288 u4_bitstream_offset += (u4_ldz + 1); 289 /* Read the suffix from the ps_bitstrm */ 290 u4_word = 0; 291 if(u4_ldz) 292 { 293 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 294 u4_ldz); 295 } 296 *pu4_bitstrm_ofst = u4_bitstream_offset; 297 u4_temp = ((1 << u4_ldz) + u4_word - 1); 298 299//Inlined ih264d_uev 300 301 if(u4_temp > 3) 302 { 303 return ERROR_CHROMA_PRED_MODE; 304 } 305 ps_cur_mb_info->u1_chroma_pred_mode = u4_temp; 306 COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode); 307 } 308 /*-------------------------------------------------------------------*/ 309 /* Read the Coded block pattern */ 310 /*-------------------------------------------------------------------*/ 311 u4_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2]; 312 ps_cur_mb_info->u1_cbp = u4_cbp; 313 314 /*-------------------------------------------------------------------*/ 315 /* Read mb_qp_delta */ 316 /*-------------------------------------------------------------------*/ 317 { 318 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 319 UWORD32 u4_word, u4_ldz, u4_abs_val; 320 321 /***************************************************************/ 322 /* Find leading zeros in next 32 bits */ 323 /***************************************************************/ 324 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 325 u4_ldz = CLZ(u4_word); 326 327 /* Flush the ps_bitstrm */ 328 u4_bitstream_offset += (u4_ldz + 1); 329 330 /* Read the suffix from the ps_bitstrm */ 331 u4_word = 0; 332 if(u4_ldz) 333 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 334 u4_ldz); 335 336 *pu4_bitstrm_ofst = u4_bitstream_offset; 337 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; 338 339 if(u4_word & 0x1) 340 i4_delta_qp = (-(WORD32)u4_abs_val); 341 else 342 i4_delta_qp = (u4_abs_val); 343 344 if((i4_delta_qp < -26) || (i4_delta_qp > 25)) 345 return ERROR_INV_RANGE_QP_T; 346 347 } 348//inlinined ih264d_sev 349 COPYTHECONTEXT("Delta quant", i1_delta_qp); 350 351 if(i4_delta_qp != 0) 352 { 353 ret = ih264d_update_qp(ps_dec, (WORD8)i4_delta_qp); 354 if(ret != OK) 355 return ret; 356 } 357 358 { 359 WORD16 i_scaleFactor; 360 UWORD32 ui_N = 0; 361 WORD16 *pi2_scale_matrix_ptr; 362 /*******************************************************************/ 363 /* for luma DC coefficients the scaling is done during the parsing */ 364 /* to preserve the precision */ 365 /*******************************************************************/ 366 if(ps_dec->s_high_profile.u1_scaling_present) 367 { 368 pi2_scale_matrix_ptr = 369 ps_dec->s_high_profile.i2_scalinglist4x4[0]; 370 } 371 else 372 { 373 i_scaleFactor = 16; 374 pi2_scale_matrix_ptr = &i_scaleFactor; 375 } 376 377 /*---------------------------------------------------------------*/ 378 /* Decode DC coefficients */ 379 /*---------------------------------------------------------------*/ 380 /*---------------------------------------------------------------*/ 381 /* Calculation of N */ 382 /*---------------------------------------------------------------*/ 383 if(ui_is_left_mb_available) 384 { 385 386 if(ui_is_top_mb_available) 387 { 388 ui_N = ((ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0] 389 + ps_dec->pu1_left_nnz_y[0] + 1) >> 1); 390 } 391 else 392 { 393 ui_N = ps_dec->pu1_left_nnz_y[0]; 394 } 395 } 396 else if(ui_is_top_mb_available) 397 { 398 ui_N = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0]; 399 } 400 401 { 402 WORD16 pi2_dc_coef[16]; 403 WORD32 pi4_tmp[16]; 404 tu_sblk4x4_coeff_data_t *ps_tu_4x4 = 405 (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; 406 WORD16 *pi2_coeff_block = 407 (WORD16 *)ps_dec->pv_parse_tu_coeff_data; 408 UWORD32 u4_num_coeff; 409 ps_tu_4x4->u2_sig_coeff_map = 0; 410 411 ret = ps_dec->pf_cavlc_parse4x4coeff[(ui_N > 7)](pi2_dc_coef, 0, ui_N, 412 ps_dec, &u4_num_coeff); 413 if(ret != OK) 414 return ret; 415 416 if(EXCEED_OFFSET(ps_bitstrm)) 417 return ERROR_EOB_TERMINATE_T; 418 if(ps_tu_4x4->u2_sig_coeff_map) 419 { 420 memset(pi2_dc_coef,0,sizeof(pi2_dc_coef)); 421 ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, 422 pi2_dc_coef, 423 ps_dec->pu1_inv_scan); 424 425 PROFILE_DISABLE_IQ_IT_RECON() 426 ps_dec->pf_ihadamard_scaling_4x4(pi2_dc_coef, 427 pi2_coeff_block, 428 ps_dec->pu2_quant_scale_y, 429 (UWORD16 *)pi2_scale_matrix_ptr, 430 ps_dec->u1_qp_y_div6, 431 pi4_tmp); 432 pi2_coeff_block += 16; 433 ps_dec->pv_parse_tu_coeff_data = (void *)pi2_coeff_block; 434 SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag,0); 435 } 436 437 } 438 } 439 } 440 441 442 if(u4_cbp) 443 { 444 445 ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 446 (UWORD8)u4_offset); 447 if(ret != OK) 448 return ret; 449 if(EXCEED_OFFSET(ps_bitstrm)) 450 return ERROR_EOB_TERMINATE_T; 451 452 /* Store Left Mb NNZ and TOP chroma NNZ */ 453 } 454 else 455 { 456 ps_cur_mb_info->u1_qp_div6 = ps_dec->u1_qp_y_div6; 457 ps_cur_mb_info->u1_qpc_div6 = ps_dec->u1_qp_u_div6; 458 ps_cur_mb_info->u1_qpcr_div6 = ps_dec->u1_qp_v_div6; 459 ps_cur_mb_info->u1_qp_rem6 = ps_dec->u1_qp_y_rem6; 460 ps_cur_mb_info->u1_qpc_rem6 = ps_dec->u1_qp_u_rem6; 461 ps_cur_mb_info->u1_qpcr_rem6 = ps_dec->u1_qp_v_rem6; 462 ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC); 463 } 464 465 return OK; 466} 467 468/*! 469 ************************************************************************** 470 * \if Function name : ParseIMbCab \endif 471 * 472 * \brief 473 * This function parses CABAC syntax of a I MB. If 16x16 Luma DC transform 474 * is also done here. Transformed Luma DC values are copied in their 475 * 0th pixel location of corrosponding CoeffBlock. 476 * 477 * \return 478 * 0 on Success and Error code otherwise 479 ************************************************************************** 480 */ 481WORD32 ih264d_parse_imb_cabac(dec_struct_t * ps_dec, 482 dec_mb_info_t * ps_cur_mb_info, 483 UWORD8 u1_mb_type) 484{ 485 WORD8 i1_delta_qp; 486 UWORD8 u1_cbp; 487 UWORD8 u1_offset; 488 /* Variables for handling Cabac contexts */ 489 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; 490 ctxt_inc_mb_info_t *ps_left_ctxt = ps_dec->p_left_ctxt_mb_info; 491 dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; 492 bin_ctxt_model_t *p_bin_ctxt; 493 494 UWORD8 u1_intra_chrom_pred_mode; 495 UWORD8 u1_dc_block_flag = 0; 496 WORD32 ret; 497 498 ps_cur_mb_info->u1_yuv_dc_block_flag = 0; 499 500 if(ps_left_ctxt == ps_dec->ps_def_ctxt_mb_info) 501 { 502 ps_dec->pu1_left_yuv_dc_csbp[0] = 0xf; 503 } 504 505 if(ps_dec->ps_cur_slice->u1_slice_type != I_SLICE) 506 { 507 WORD32 *pi4_buf; 508 WORD8 *pi1_buf; 509 MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0); 510 *((UWORD32 *)ps_dec->pi1_left_ref_idx_ctxt_inc) = 0; 511 MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0); 512 memset(p_curr_ctxt->i1_ref_idx, 0, 4); 513 } 514 515 if(u1_mb_type == I_4x4_MB) 516 { 517 ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB; 518 p_curr_ctxt->u1_mb_type = CAB_I4x4; 519 u1_offset = 0; 520 521 ps_cur_mb_info->u1_tran_form8x8 = 0; 522 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 523 524 /*--------------------------------------------------------------------*/ 525 /* Read transform_size_8x8_flag if present */ 526 /*--------------------------------------------------------------------*/ 527 if(ps_dec->s_high_profile.u1_transform8x8_present) 528 { 529 ps_cur_mb_info->u1_tran_form8x8 = ih264d_parse_transform8x8flag_cabac( 530 ps_dec, ps_cur_mb_info); 531 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8); 532 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8; 533 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8; 534 } 535 else 536 { 537 p_curr_ctxt->u1_transform8x8_ctxt = 0; 538 } 539 540 /*--------------------------------------------------------------------*/ 541 /* Read the IntraPrediction modes for LUMA */ 542 /*--------------------------------------------------------------------*/ 543 if (!ps_cur_mb_info->u1_tran_form8x8) 544 { 545 UWORD8 *pu1_temp; 546 ih264d_read_intra_pred_modes_cabac( 547 ps_dec, 548 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data), 549 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data+16), 550 ps_cur_mb_info->u1_tran_form8x8); 551 pu1_temp = (UWORD8 *)ps_dec->pv_parse_tu_coeff_data; 552 pu1_temp += 32; 553 ps_dec->pv_parse_tu_coeff_data = (void *)pu1_temp; 554 } 555 else 556 { 557 UWORD8 *pu1_temp; 558 ih264d_read_intra_pred_modes_cabac( 559 ps_dec, 560 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data), 561 ((UWORD8 *)ps_dec->pv_parse_tu_coeff_data+4), 562 ps_cur_mb_info->u1_tran_form8x8); 563 pu1_temp = (UWORD8 *)ps_dec->pv_parse_tu_coeff_data; 564 pu1_temp += 8; 565 ps_dec->pv_parse_tu_coeff_data = (void *)pu1_temp; 566 } 567 /*--------------------------------------------------------------------*/ 568 /* Read the IntraPrediction mode for CHROMA */ 569 /*--------------------------------------------------------------------*/ 570 u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec); 571 COPYTHECONTEXT("intra_chroma_pred_mode", u1_intra_chrom_pred_mode); 572 p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode = 573 u1_intra_chrom_pred_mode; 574 575 /*--------------------------------------------------------------------*/ 576 /* Read the Coded block pattern */ 577 /*--------------------------------------------------------------------*/ 578 u1_cbp = ih264d_parse_ctx_cbp_cabac(ps_dec); 579 COPYTHECONTEXT("coded_block_pattern", u1_cbp); 580 ps_cur_mb_info->u1_cbp = u1_cbp; 581 p_curr_ctxt->u1_cbp = u1_cbp; 582 583 /*--------------------------------------------------------------------*/ 584 /* Read mb_qp_delta */ 585 /*--------------------------------------------------------------------*/ 586 if(ps_cur_mb_info->u1_cbp) 587 { 588 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp); 589 if(ret != OK) 590 return ret; 591 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); 592 if(i1_delta_qp != 0) 593 { 594 ret = ih264d_update_qp(ps_dec, i1_delta_qp); 595 if(ret != OK) 596 return ret; 597 } 598 } 599 else 600 ps_dec->i1_prev_mb_qp_delta = 0; 601 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE; 602 } 603 else 604 { 605 u1_offset = 1; 606 ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB; 607 p_curr_ctxt->u1_mb_type = CAB_I16x16; 608 ps_cur_mb_info->u1_tran_form8x8 = 0; 609 p_curr_ctxt->u1_transform8x8_ctxt = 0; 610 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 611 /*--------------------------------------------------------------------*/ 612 /* Read the IntraPrediction mode for CHROMA */ 613 /*--------------------------------------------------------------------*/ 614 u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec); 615 if(u1_intra_chrom_pred_mode > 3) 616 return ERROR_CHROMA_PRED_MODE; 617 618 COPYTHECONTEXT("Chroma intra_chroma_pred_mode pred mode", u1_intra_chrom_pred_mode); 619 p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode = 620 u1_intra_chrom_pred_mode; 621 622 /*--------------------------------------------------------------------*/ 623 /* Read the Coded block pattern */ 624 /*--------------------------------------------------------------------*/ 625 u1_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2]; 626 ps_cur_mb_info->u1_cbp = u1_cbp; 627 p_curr_ctxt->u1_cbp = u1_cbp; 628 629 /*--------------------------------------------------------------------*/ 630 /* Read mb_qp_delta */ 631 /*--------------------------------------------------------------------*/ 632 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp); 633 if(ret != OK) 634 return ret; 635 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp); 636 if(i1_delta_qp != 0) 637 { 638 ret = ih264d_update_qp(ps_dec, i1_delta_qp); 639 if(ret != OK) 640 return ret; 641 } 642 643 { 644 WORD16 i_scaleFactor; 645 WORD16* pi2_scale_matrix_ptr; 646 /*******************************************************************/ 647 /* for luma DC coefficients the scaling is done during the parsing */ 648 /* to preserve the precision */ 649 /*******************************************************************/ 650 if(ps_dec->s_high_profile.u1_scaling_present) 651 { 652 pi2_scale_matrix_ptr = 653 ps_dec->s_high_profile.i2_scalinglist4x4[0]; 654 655 } 656 else 657 { 658 i_scaleFactor = 16; 659 pi2_scale_matrix_ptr = &i_scaleFactor; 660 } 661 { 662 ctxt_inc_mb_info_t *ps_top_ctxt = ps_dec->p_top_ctxt_mb_info; 663 UWORD8 uc_a, uc_b; 664 UWORD32 u4_ctx_inc; 665 666 INC_SYM_COUNT(&(ps_dec->s_cab_dec_env)); 667 668 /* if MbAddrN not available then CondTermN = 1 */ 669 uc_b = ((ps_top_ctxt->u1_yuv_dc_csbp) & 0x01); 670 671 /* if MbAddrN not available then CondTermN = 1 */ 672 uc_a = ((ps_dec->pu1_left_yuv_dc_csbp[0]) & 0x01); 673 674 u4_ctx_inc = (uc_a + (uc_b << 1)); 675 676 { 677 WORD16 pi2_dc_coef[16]; 678 tu_sblk4x4_coeff_data_t *ps_tu_4x4 = 679 (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; 680 WORD16 *pi2_coeff_block = 681 (WORD16 *)ps_dec->pv_parse_tu_coeff_data; 682 683 p_bin_ctxt = (ps_dec->p_cbf_t[LUMA_DC_CTXCAT]) + u4_ctx_inc; 684 685 u1_dc_block_flag = 686 ih264d_read_coeff4x4_cabac(ps_bitstrm, 687 LUMA_DC_CTXCAT, 688 ps_dec->p_significant_coeff_flag_t[LUMA_DC_CTXCAT], 689 ps_dec, p_bin_ctxt); 690 691 /* Store coded_block_flag */ 692 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE; 693 p_curr_ctxt->u1_yuv_dc_csbp |= u1_dc_block_flag; 694 if(u1_dc_block_flag) 695 { 696 WORD32 pi4_tmp[16]; 697 memset(pi2_dc_coef,0,sizeof(pi2_dc_coef)); 698 ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, 699 pi2_dc_coef, 700 ps_dec->pu1_inv_scan); 701 702 PROFILE_DISABLE_IQ_IT_RECON() 703 ps_dec->pf_ihadamard_scaling_4x4(pi2_dc_coef, 704 pi2_coeff_block, 705 ps_dec->pu2_quant_scale_y, 706 (UWORD16 *)pi2_scale_matrix_ptr, 707 ps_dec->u1_qp_y_div6, 708 pi4_tmp); 709 pi2_coeff_block += 16; 710 ps_dec->pv_parse_tu_coeff_data = (void *)pi2_coeff_block; 711 SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag,0); 712 } 713 714 } 715 716 } 717 } 718 } 719 720 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6; 721 ps_dec->pu1_left_yuv_dc_csbp[0] |= u1_dc_block_flag; 722 723 ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, u1_offset); 724 if(EXCEED_OFFSET(ps_bitstrm)) 725 return ERROR_EOB_TERMINATE_T; 726 return OK; 727} 728 729/*****************************************************************************/ 730/* */ 731/* Function Name : ih264d_parse_islice_data_cavlc */ 732/* */ 733/* Description : This function parses cabac syntax of a inter slice on */ 734/* N MB basis. */ 735/* */ 736/* Inputs : ps_dec */ 737/* sliceparams */ 738/* firstMbInSlice */ 739/* */ 740/* Processing : 1. After parsing syntax for N MBs those N MBs are */ 741/* decoded till the end of slice. */ 742/* */ 743/* Returns : 0 */ 744/* */ 745/* Issues : <List any issues or problems with this function> */ 746/* */ 747/* Revision History: */ 748/* */ 749/* DD MM YYYY Author(s) Changes (Describe the changes made) */ 750/* 24 06 2005 ARNY Draft */ 751/* */ 752/*****************************************************************************/ 753WORD32 ih264d_parse_islice_data_cavlc(dec_struct_t * ps_dec, 754 dec_slice_params_t * ps_slice, 755 UWORD16 u2_first_mb_in_slice) 756{ 757 UWORD8 uc_more_data_flag; 758 UWORD8 u1_num_mbs, u1_mb_idx; 759 dec_mb_info_t *ps_cur_mb_info; 760 deblk_mb_t *ps_cur_deblk_mb; 761 dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; 762 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst; 763 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; 764 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; 765 WORD16 i2_cur_mb_addr; 766 UWORD8 u1_mbaff; 767 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb; 768 WORD32 ret = OK; 769 770 ps_dec->u1_qp = ps_slice->u1_slice_qp; 771 ih264d_update_qp(ps_dec, 0); 772 u1_mbaff = ps_slice->u1_mbaff_frame_flag; 773 774 /* initializations */ 775 u1_mb_idx = ps_dec->u1_mb_idx; 776 u1_num_mbs = u1_mb_idx; 777 778 uc_more_data_flag = 1; 779 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; 780 781 do 782 { 783 UWORD8 u1_mb_type; 784 785 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data; 786 787 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) 788 { 789 break; 790 } 791 792 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs; 793 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs; 794 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); 795 796 ps_cur_mb_info->u1_end_of_slice = 0; 797 798 /***************************************************************/ 799 /* Get the required information for decoding of MB */ 800 /* mb_x, mb_y , neighbour availablity, */ 801 /***************************************************************/ 802 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0); 803 804 /***************************************************************/ 805 /* Set the deblocking parameters for this MB */ 806 /***************************************************************/ 807 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; 808 809 if(ps_dec->u4_app_disable_deblk_frm == 0) 810 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice, 811 ps_dec->u1_mb_ngbr_availablity, 812 ps_dec->u1_cur_mb_fld_dec_flag); 813 814 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB; 815 816 /**************************************************************/ 817 /* Macroblock Layer Begins, Decode the u1_mb_type */ 818 /**************************************************************/ 819//Inlined ih264d_uev 820 { 821 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; 822 UWORD32 u4_word, u4_ldz, u4_temp; 823 824 /***************************************************************/ 825 /* Find leading zeros in next 32 bits */ 826 /***************************************************************/ 827 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); 828 u4_ldz = CLZ(u4_word); 829 /* Flush the ps_bitstrm */ 830 u4_bitstream_offset += (u4_ldz + 1); 831 /* Read the suffix from the ps_bitstrm */ 832 u4_word = 0; 833 if(u4_ldz) 834 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, 835 u4_ldz); 836 *pu4_bitstrm_ofst = u4_bitstream_offset; 837 u4_temp = ((1 << u4_ldz) + u4_word - 1); 838 if(u4_temp > 25) 839 return ERROR_MB_TYPE; 840 u1_mb_type = u4_temp; 841 842 } 843//Inlined ih264d_uev 844 ps_cur_mb_info->u1_mb_type = u1_mb_type; 845 COPYTHECONTEXT("u1_mb_type", u1_mb_type); 846 847 /**************************************************************/ 848 /* Parse Macroblock data */ 849 /**************************************************************/ 850 if(25 == u1_mb_type) 851 { 852 /* I_PCM_MB */ 853 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB; 854 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs); 855 if(ret != OK) 856 return ret; 857 ps_cur_deblk_mb->u1_mb_qp = 0; 858 } 859 else 860 { 861 ret = ih264d_parse_imb_cavlc(ps_dec, ps_cur_mb_info, u1_num_mbs, u1_mb_type); 862 if(ret != OK) 863 return ret; 864 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; 865 } 866 867 uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm); 868 869 if(u1_mbaff) 870 { 871 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); 872 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1))) 873 { 874 return ERROR_EOB_FLUSHBITS_T; 875 } 876 } 877 /**************************************************************/ 878 /* Get next Macroblock address */ 879 /**************************************************************/ 880 881 i2_cur_mb_addr++; 882 883 884 /* Store the colocated information */ 885 { 886 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4); 887 888 mv_pred_t s_mvPred = 889 { 890 { 0, 0, 0, 0 }, 891 { -1, -1 }, 0, 0}; 892 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, 893 (UWORD8)(ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 894 4); 895 } 896 897 /*if num _cores is set to 3,compute bs will be done in another thread*/ 898 if(ps_dec->u4_num_cores < 3) 899 { 900 if(ps_dec->u4_app_disable_deblk_frm == 0) 901 ps_dec->pf_compute_bs(ps_dec, ps_cur_mb_info, 902 (UWORD16)(u1_num_mbs >> u1_mbaff)); 903 } 904 u1_num_mbs++; 905 906 /****************************************************************/ 907 /* Check for End Of Row */ 908 /****************************************************************/ 909 u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1; 910 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); 911 u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row 912 || (!uc_more_data_flag); 913 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag); 914 915 /*H264_DEC_DEBUG_PRINT("Pic: %d Mb_X=%d Mb_Y=%d", 916 ps_slice->i4_poc >> ps_slice->u1_field_pic_flag, 917 ps_dec->u2_mbx,ps_dec->u2_mby + (1 - ps_cur_mb_info->u1_topmb)); 918 H264_DEC_DEBUG_PRINT("u1_tfr_n_mb || (!uc_more_data_flag): %d", u1_tfr_n_mb || (!uc_more_data_flag));*/ 919 if(u1_tfr_n_mb || (!uc_more_data_flag)) 920 { 921 922 if(ps_dec->u1_separate_parse) 923 { 924 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, 925 u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); 926 ps_dec->ps_nmb_info += u1_num_mbs; 927 } 928 else 929 { 930 ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, 931 u1_num_mbs_next, u1_tfr_n_mb, 932 u1_end_of_row); 933 } 934 ps_dec->u2_total_mbs_coded += u1_num_mbs; 935 if(u1_tfr_n_mb) 936 u1_num_mbs = 0; 937 u1_mb_idx = u1_num_mbs; 938 ps_dec->u1_mb_idx = u1_num_mbs; 939 940 } 941 } 942 while(uc_more_data_flag); 943 944 ps_dec->u4_num_mbs_cur_nmb = 0; 945 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr 946 947 - (u2_first_mb_in_slice << u1_mbaff); 948 949 return ret; 950} 951 952/*****************************************************************************/ 953/* */ 954/* Function Name : ih264d_parse_islice_data_cabac */ 955/* */ 956/* Description : This function parses cabac syntax of a inter slice on */ 957/* N MB basis. */ 958/* */ 959/* Inputs : ps_dec */ 960/* sliceparams */ 961/* firstMbInSlice */ 962/* */ 963/* Processing : 1. After parsing syntax for N MBs those N MBs are */ 964/* decoded till the end of slice. */ 965/* */ 966/* Returns : 0 */ 967/* */ 968/* Issues : <List any issues or problems with this function> */ 969/* */ 970/* Revision History: */ 971/* */ 972/* DD MM YYYY Author(s) Changes (Describe the changes made) */ 973/* 24 06 2005 ARNY Draft */ 974/* */ 975/*****************************************************************************/ 976WORD32 ih264d_parse_islice_data_cabac(dec_struct_t * ps_dec, 977 dec_slice_params_t * ps_slice, 978 UWORD16 u2_first_mb_in_slice) 979{ 980 UWORD8 uc_more_data_flag; 981 UWORD8 u1_num_mbs, u1_mb_idx; 982 dec_mb_info_t *ps_cur_mb_info; 983 deblk_mb_t *ps_cur_deblk_mb; 984 985 dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; 986 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs; 987 WORD16 i2_cur_mb_addr; 988 UWORD8 u1_mbaff; 989 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb; 990 WORD32 ret = OK; 991 992 ps_dec->u1_qp = ps_slice->u1_slice_qp; 993 ih264d_update_qp(ps_dec, 0); 994 u1_mbaff = ps_slice->u1_mbaff_frame_flag; 995 996 if(ps_bitstrm->u4_ofst & 0x07) 997 { 998 ps_bitstrm->u4_ofst += 8; 999 ps_bitstrm->u4_ofst &= 0xFFFFFFF8; 1000 } 1001 ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm); 1002 if(ret != OK) 1003 return ret; 1004 ih264d_init_cabac_contexts(I_SLICE, ps_dec); 1005 1006 ps_dec->i1_prev_mb_qp_delta = 0; 1007 1008 /* initializations */ 1009 u1_mb_idx = ps_dec->u1_mb_idx; 1010 u1_num_mbs = u1_mb_idx; 1011 1012 uc_more_data_flag = 1; 1013 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff; 1014 do 1015 { 1016 UWORD16 u2_mbx; 1017 1018 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data; 1019 1020 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) 1021 { 1022 break; 1023 } 1024 1025 { 1026 UWORD8 u1_mb_type; 1027 1028 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs; 1029 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs; 1030 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff); 1031 1032 ps_cur_mb_info->u1_end_of_slice = 0; 1033 1034 /***************************************************************/ 1035 /* Get the required information for decoding of MB */ 1036 /* mb_x, mb_y , neighbour availablity, */ 1037 /***************************************************************/ 1038 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0); 1039 u2_mbx = ps_dec->u2_mbx; 1040 1041 /*********************************************************************/ 1042 /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */ 1043 /*********************************************************************/ 1044 ps_cur_mb_info->u1_tran_form8x8 = 0; 1045 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 1046 1047 /***************************************************************/ 1048 /* Set the deblocking parameters for this MB */ 1049 /***************************************************************/ 1050 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs; 1051 if(ps_dec->u4_app_disable_deblk_frm == 0) 1052 ih264d_set_deblocking_parameters( 1053 ps_cur_deblk_mb, ps_slice, 1054 ps_dec->u1_mb_ngbr_availablity, 1055 ps_dec->u1_cur_mb_fld_dec_flag); 1056 1057 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type 1058 | D_INTRA_MB; 1059 1060 /* Macroblock Layer Begins */ 1061 /* Decode the u1_mb_type */ 1062 u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec); 1063 if(u1_mb_type > 25) 1064 return ERROR_MB_TYPE; 1065 ps_cur_mb_info->u1_mb_type = u1_mb_type; 1066 COPYTHECONTEXT("u1_mb_type", u1_mb_type); 1067 1068 /* Parse Macroblock Data */ 1069 if(25 == u1_mb_type) 1070 { 1071 /* I_PCM_MB */ 1072 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB; 1073 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs); 1074 if(ret != OK) 1075 return ret; 1076 ps_cur_deblk_mb->u1_mb_qp = 0; 1077 } 1078 else 1079 { 1080 ret = ih264d_parse_imb_cabac(ps_dec, ps_cur_mb_info, u1_mb_type); 1081 if(ret != OK) 1082 return ret; 1083 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp; 1084 } 1085 1086 if(u1_mbaff) 1087 { 1088 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info); 1089 } 1090 1091 1092 if(ps_cur_mb_info->u1_topmb && u1_mbaff) 1093 uc_more_data_flag = 1; 1094 else 1095 { 1096 uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, 1097 ps_bitstrm); 1098 uc_more_data_flag = !uc_more_data_flag; 1099 COPYTHECONTEXT("Decode Sliceterm",!uc_more_data_flag); 1100 } 1101 1102 if(u1_mbaff) 1103 { 1104 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1))) 1105 { 1106 return ERROR_EOB_FLUSHBITS_T; 1107 } 1108 } 1109 /* Next macroblock information */ 1110 i2_cur_mb_addr++; 1111 /* Store the colocated information */ 1112 { 1113 1114 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4); 1115 mv_pred_t s_mvPred = 1116 { 1117 { 0, 0, 0, 0 }, 1118 { -1, -1 }, 0, 0}; 1119 ih264d_rep_mv_colz( 1120 ps_dec, &s_mvPred, ps_mv_nmb_start, 0, 1121 (UWORD8)(ps_dec->u1_cur_mb_fld_dec_flag << 1), 1122 4, 4); 1123 } 1124 /*if num _cores is set to 3,compute bs will be done in another thread*/ 1125 if(ps_dec->u4_num_cores < 3) 1126 { 1127 if(ps_dec->u4_app_disable_deblk_frm == 0) 1128 ps_dec->pf_compute_bs(ps_dec, ps_cur_mb_info, 1129 (UWORD16)(u1_num_mbs >> u1_mbaff)); 1130 } 1131 u1_num_mbs++; 1132 1133 } 1134 1135 /****************************************************************/ 1136 /* Check for End Of Row */ 1137 /****************************************************************/ 1138 u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1; 1139 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01))); 1140 u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row 1141 || (!uc_more_data_flag); 1142 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag); 1143 1144 if(u1_tfr_n_mb || (!uc_more_data_flag)) 1145 { 1146 1147 1148 if(ps_dec->u1_separate_parse) 1149 { 1150 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, 1151 u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row); 1152 ps_dec->ps_nmb_info += u1_num_mbs; 1153 } 1154 else 1155 { 1156 ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, 1157 u1_num_mbs_next, u1_tfr_n_mb, 1158 u1_end_of_row); 1159 } 1160 ps_dec->u2_total_mbs_coded += u1_num_mbs; 1161 if(u1_tfr_n_mb) 1162 u1_num_mbs = 0; 1163 u1_mb_idx = u1_num_mbs; 1164 ps_dec->u1_mb_idx = u1_num_mbs; 1165 1166 } 1167 } 1168 while(uc_more_data_flag); 1169 1170 ps_dec->u4_num_mbs_cur_nmb = 0; 1171 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr 1172 1173 - (u2_first_mb_in_slice << u1_mbaff); 1174 1175 return ret; 1176} 1177 1178/*****************************************************************************/ 1179/* */ 1180/* Function Name : ih264d_parse_ipcm_mb */ 1181/* */ 1182/* Description : This function decodes the pixel values of I_PCM Mb. */ 1183/* */ 1184/* Inputs : ps_dec, ps_cur_mb_info and mb number */ 1185/* */ 1186/* Description : This function reads the luma and chroma pixels directly */ 1187/* from the bitstream when the mbtype is I_PCM and stores */ 1188/* them in recon buffer. If the entropy coding mode is */ 1189/* cabac, decoding engine is re-initialized. The nnzs and */ 1190/* cabac contexts are appropriately modified. */ 1191/* Returns : void */ 1192/* */ 1193/* Revision History: */ 1194/* DD MM YYYY Author(s) Changes (Describe the changes made) */ 1195/* 13 07 2002 Jay */ 1196/* */ 1197/*****************************************************************************/ 1198 1199WORD32 ih264d_parse_ipcm_mb(dec_struct_t * ps_dec, 1200 dec_mb_info_t *ps_cur_mb_info, 1201 UWORD8 u1_mbNum) 1202{ 1203 dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm; 1204 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; 1205 UWORD8 *pu1_y, *pu1_u, *pu1_v; 1206 WORD32 ret; 1207 1208 UWORD32 u4_rec_width_y, u4_rec_width_uv; 1209 UWORD32 u1_num_mb_pair; 1210 UWORD8 u1_x, u1_y; 1211 /* CHANGED CODE */ 1212 tfr_ctxt_t *ps_frame_buf; 1213 UWORD8 u1_mb_field_decoding_flag; 1214 UWORD32 *pu4_buf; 1215 UWORD8 *pu1_buf; 1216 /* CHANGED CODE */ 1217 1218 if(ps_dec->u1_separate_parse) 1219 { 1220 ps_frame_buf = &ps_dec->s_tran_addrecon_parse; 1221 } 1222 else 1223 { 1224 ps_frame_buf = &ps_dec->s_tran_addrecon; 1225 } 1226 /* align bistream to byte boundary. */ 1227 /* pcm_alignment_zero_bit discarded */ 1228 /* For XX GotoByteBoundary */ 1229 if(ps_bitstrm->u4_ofst & 0x07) 1230 { 1231 ps_bitstrm->u4_ofst += 8; 1232 ps_bitstrm->u4_ofst &= 0xFFFFFFF8; 1233 } 1234 1235 /* Store left Nnz as 16 for each 4x4 blk */ 1236 1237 pu1_buf = ps_dec->pu1_left_nnz_y; 1238 pu4_buf = (UWORD32 *)pu1_buf; 1239 *pu4_buf = 0x10101010; 1240 pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_y; 1241 pu4_buf = (UWORD32 *)pu1_buf; 1242 *pu4_buf = 0x10101010; 1243 pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_uv; 1244 pu4_buf = (UWORD32 *)pu1_buf; 1245 *pu4_buf = 0x10101010; 1246 pu1_buf = ps_dec->pu1_left_nnz_uv; 1247 pu4_buf = (UWORD32 *)pu1_buf; 1248 *pu4_buf = 0x10101010; 1249 ps_cur_mb_info->u1_cbp = 0xff; 1250 1251 ps_dec->i1_prev_mb_qp_delta = 0; 1252 /* Get neighbour MB's */ 1253 u1_num_mb_pair = (u1_mbNum >> u1_mbaff); 1254 1255 /*****************************************************************************/ 1256 /* calculate the RECON buffer YUV pointers for the PCM data */ 1257 /*****************************************************************************/ 1258 /* CHANGED CODE */ 1259 u1_mb_field_decoding_flag = ps_cur_mb_info->u1_mb_field_decodingflag; 1260 pu1_y = ps_frame_buf->pu1_dest_y + (u1_num_mb_pair << 4); 1261 pu1_u = ps_frame_buf->pu1_dest_u + (u1_num_mb_pair << 4); 1262 pu1_v = pu1_u + 1; 1263 1264 u4_rec_width_y = ps_dec->u2_frm_wd_y << u1_mb_field_decoding_flag; 1265 u4_rec_width_uv = ps_dec->u2_frm_wd_uv << u1_mb_field_decoding_flag; 1266 /* CHANGED CODE */ 1267 1268 if(u1_mbaff) 1269 { 1270 UWORD8 u1_top_mb; 1271 1272 u1_top_mb = ps_cur_mb_info->u1_topmb; 1273 1274 if(u1_top_mb == 0) 1275 { 1276 pu1_y += (u1_mb_field_decoding_flag ? 1277 (u4_rec_width_y >> 1) : (u4_rec_width_y << 4)); 1278 pu1_u += (u1_mb_field_decoding_flag ? 1279 (u4_rec_width_uv) : (u4_rec_width_uv << 4)); 1280 pu1_v = pu1_u + 1; 1281 } 1282 } 1283 1284 /* Read Luma samples */ 1285 for(u1_y = 0; u1_y < 16; u1_y++) 1286 { 1287 for(u1_x = 0; u1_x < 16; u1_x++) 1288 pu1_y[u1_x] = ih264d_get_bits_h264(ps_bitstrm, 8); 1289 1290 pu1_y += u4_rec_width_y; 1291 } 1292 1293 /* Read Chroma samples */ 1294 for(u1_y = 0; u1_y < 8; u1_y++) 1295 { 1296 for(u1_x = 0; u1_x < 8; u1_x++) 1297 pu1_u[u1_x * YUV420SP_FACTOR] = ih264d_get_bits_h264(ps_bitstrm, 8); 1298 1299 pu1_u += u4_rec_width_uv; 1300 } 1301 1302 for(u1_y = 0; u1_y < 8; u1_y++) 1303 { 1304 for(u1_x = 0; u1_x < 8; u1_x++) 1305 pu1_v[u1_x * YUV420SP_FACTOR] = ih264d_get_bits_h264(ps_bitstrm, 8); 1306 1307 pu1_v += u4_rec_width_uv; 1308 } 1309 1310 if(CABAC == ps_dec->ps_cur_pps->u1_entropy_coding_mode) 1311 { 1312 UWORD32 *pu4_buf; 1313 UWORD8 *pu1_buf; 1314 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info; 1315 /* Re-initialize the cabac decoding engine. */ 1316 ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm); 1317 if(ret != OK) 1318 return ret; 1319 /* update the cabac contetxs */ 1320 p_curr_ctxt->u1_mb_type = CAB_I_PCM; 1321 p_curr_ctxt->u1_cbp = 47; 1322 p_curr_ctxt->u1_intra_chroma_pred_mode = 0; 1323 p_curr_ctxt->u1_transform8x8_ctxt = 0; 1324 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0; 1325 1326 pu1_buf = ps_dec->pu1_left_nnz_y; 1327 pu4_buf = (UWORD32 *)pu1_buf; 1328 *pu4_buf = 0x01010101; 1329 1330 pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_y; 1331 pu4_buf = (UWORD32 *)pu1_buf; 1332 *pu4_buf = 0x01010101; 1333 1334 pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_uv; 1335 pu4_buf = (UWORD32 *)pu1_buf; 1336 *pu4_buf = 0x01010101; 1337 1338 pu1_buf = ps_dec->pu1_left_nnz_uv; 1339 pu4_buf = (UWORD32 *)pu1_buf; 1340 *pu4_buf = 0x01010101; 1341 1342 p_curr_ctxt->u1_yuv_dc_csbp = 0x7; 1343 ps_dec->pu1_left_yuv_dc_csbp[0] = 0x7; 1344 if(ps_dec->ps_cur_slice->u1_slice_type != I_SLICE) 1345 { 1346 1347 MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0); 1348 memset(ps_dec->pi1_left_ref_idx_ctxt_inc, 0, 4); 1349 MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0); 1350 memset(p_curr_ctxt->i1_ref_idx, 0, 4); 1351 1352 } 1353 } 1354 return OK; 1355} 1356 1357/*! 1358 ************************************************************************** 1359 * \if Function name : ih264d_decode_islice \endif 1360 * 1361 * \brief 1362 * Decodes an I Slice 1363 * 1364 * 1365 * \return 1366 * 0 on Success and Error code otherwise 1367 ************************************************************************** 1368 */ 1369WORD32 ih264d_parse_islice(dec_struct_t *ps_dec, 1370 UWORD16 u2_first_mb_in_slice) 1371{ 1372 dec_pic_params_t * ps_pps = ps_dec->ps_cur_pps; 1373 dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice; 1374 UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer; 1375 UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst; 1376 UWORD32 u4_temp; 1377 WORD32 i_temp; 1378 WORD32 ret; 1379 1380 /*--------------------------------------------------------------------*/ 1381 /* Read remaining contents of the slice header */ 1382 /*--------------------------------------------------------------------*/ 1383 /* dec_ref_pic_marking function */ 1384 /* G050 */ 1385 if(ps_slice->u1_nal_ref_idc != 0) 1386 { 1387 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read) 1388 { 1389 i_temp = ih264d_read_mmco_commands(ps_dec); 1390 if (i_temp < 0) 1391 { 1392 return ERROR_DBP_MANAGER_T; 1393 } 1394 ps_dec->u4_bitoffset = i_temp; 1395 } 1396 else 1397 ps_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset; 1398 } 1399 /* G050 */ 1400 1401 /* Read slice_qp_delta */ 1402 i_temp = ps_pps->u1_pic_init_qp 1403 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1404 if((i_temp < 0) || (i_temp > 51)) 1405 return ERROR_INV_RANGE_QP_T; 1406 ps_slice->u1_slice_qp = i_temp; 1407 COPYTHECONTEXT("SH: slice_qp_delta", 1408 ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp); 1409 1410 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1) 1411 { 1412 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf); 1413 COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp); 1414 1415 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED) 1416 { 1417 return ERROR_INV_SLICE_HDR_T; 1418 } 1419 ps_slice->u1_disable_dblk_filter_idc = u4_temp; 1420 if(u4_temp != 1) 1421 { 1422 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) 1423 << 1; 1424 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF)) 1425 { 1426 return ERROR_INV_SLICE_HDR_T; 1427 } 1428 ps_slice->i1_slice_alpha_c0_offset = i_temp; 1429 COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2", 1430 ps_slice->i1_slice_alpha_c0_offset >> 1); 1431 1432 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) 1433 << 1; 1434 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF)) 1435 { 1436 return ERROR_INV_SLICE_HDR_T; 1437 } 1438 ps_slice->i1_slice_beta_offset = i_temp; 1439 COPYTHECONTEXT("SH: slice_beta_offset_div2", 1440 ps_slice->i1_slice_beta_offset >> 1); 1441 1442 } 1443 else 1444 { 1445 ps_slice->i1_slice_alpha_c0_offset = 0; 1446 ps_slice->i1_slice_beta_offset = 0; 1447 } 1448 } 1449 else 1450 { 1451 ps_slice->u1_disable_dblk_filter_idc = 0; 1452 ps_slice->i1_slice_alpha_c0_offset = 0; 1453 ps_slice->i1_slice_beta_offset = 0; 1454 } 1455 1456 /* Initialization to check if number of motion vector per 2 Mbs */ 1457 /* are exceeding the range or not */ 1458 ps_dec->u2_mv_2mb[0] = 0; 1459 ps_dec->u2_mv_2mb[1] = 0; 1460 1461 1462 /*set slice header cone to 2 ,to indicate correct header*/ 1463 ps_dec->u1_slice_header_done = 2; 1464 1465 if(ps_pps->u1_entropy_coding_mode) 1466 { 1467 SWITCHOFFTRACE; SWITCHONTRACECABAC; 1468 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) 1469 { 1470 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff; 1471 } 1472 else 1473 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_nonmbaff; 1474 1475 ret = ih264d_parse_islice_data_cabac(ps_dec, ps_slice, 1476 u2_first_mb_in_slice); 1477 if(ret != OK) 1478 return ret; 1479 SWITCHONTRACE; SWITCHOFFTRACECABAC; 1480 } 1481 else 1482 { 1483 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag) 1484 { 1485 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff; 1486 } 1487 else 1488 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff; 1489 ret = ih264d_parse_islice_data_cavlc(ps_dec, ps_slice, 1490 u2_first_mb_in_slice); 1491 if(ret != OK) 1492 return ret; 1493 } 1494 1495 return OK; 1496} 1497