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 24 * ih264_structs.h 25 * 26 * @brief 27 * Structure definitions used in the code 28 * 29 * @author 30 * Ittiam 31 * 32 * @par List of Functions: 33 * 34 * @remarks 35 * None 36 * 37 ******************************************************************************* 38 */ 39 40 #ifndef _IH264_STRUCTS_H_ 41 #define _IH264_STRUCTS_H_ 42 43 /** MB Type info for Intra MBs */ 44 typedef struct 45 { 46 UWORD32 u4_num_mbpart; 47 MBPART_PREDMODE_T e_mbpart_predmode; 48 MBMODES_I16x16 e_intra_predmode; 49 UWORD32 u4_cpb_chroma; 50 UWORD32 u4_cpb_luma; 51 }intra_mbtype_info_t; 52 53 /** MB Type info for Inter MBs */ 54 typedef struct 55 { 56 UWORD32 u4_num_mbpart; 57 MBPART_PREDMODE_T e_mbpart_predmode_0; 58 MBPART_PREDMODE_T e_mbpart_predmode_1; 59 UWORD32 u4_mbpart_wd; 60 UWORD32 u4_mbpart_ht; 61 }inter_mbtype_info_t; 62 63 64 /** Sub MB Type info for Inter MBs */ 65 typedef struct 66 { 67 UWORD32 u4_num_mbpart; 68 MBPART_PREDMODE_T e_mbpart_predmode; 69 UWORD32 u4_mbpart_wd; 70 UWORD32 u4_mbpart_ht; 71 }submbtype_info_t; 72 73 /** 74 * Picture buffer 75 */ 76 typedef struct 77 { 78 UWORD8* pu1_luma; 79 UWORD8* pu1_chroma; 80 81 WORD32 i4_abs_poc; 82 WORD32 i4_poc_lsb; 83 84 85 /** Lower 32 bit of time stamp */ 86 UWORD32 u4_timestamp_low; 87 88 /** Upper 32 bit of time stamp */ 89 UWORD32 u4_timestamp_high; 90 91 WORD32 i4_used_as_ref; 92 93 /** 94 * frame_num in the slice header 95 */ 96 WORD32 i4_frame_num; 97 98 /** 99 * Long-term frame idx 100 * TODO: store in frame_num 101 */ 102 WORD32 i4_long_term_frame_idx; 103 104 /* 105 * 0: Top Field 106 * 1: Bottom Field 107 */ 108 WORD8 i1_field_type; 109 110 /** 111 * buffer ID from frame buffer manager 112 */ 113 WORD32 i4_buf_id; 114 115 } pic_buf_t; 116 117 118 /** 119 * Reference List 120 */ 121 typedef struct 122 { 123 void *pv_pic_buf; 124 125 void *pv_mv_buf; 126 127 } ref_list_t; 128 129 130 /** 131 * Motion vector 132 */ 133 typedef struct 134 { 135 /** 136 * Horizontal Motion Vector 137 */ 138 WORD16 i2_mvx; 139 140 /** 141 * Vertical Motion Vector 142 */ 143 WORD16 i2_mvy; 144 } mv_t; 145 146 /*****************************************************************************/ 147 /* Following results in packed 48 bit structure. If mv_t included */ 148 /* ref_pic_buf_id, then 8 bits will be wasted for each mv for aligning. */ 149 /* Also using mv_t as elements directly instead of a pointer to l0 and l1 */ 150 /* mvs. Since pointer takes 4 bytes and MV itself is 4 bytes. It does not */ 151 /* really help using pointers. */ 152 /*****************************************************************************/ 153 154 /** 155 * PU Motion Vector info 156 */ 157 typedef struct 158 { 159 /** 160 * L0 Motion Vector 161 */ 162 mv_t s_l0_mv; 163 164 /** 165 * L1 Motion Vector 166 */ 167 mv_t s_l1_mv; 168 169 /** 170 * L0 Ref index 171 */ 172 WORD8 i1_l0_ref_idx; 173 174 /** 175 * L1 Ref index 176 */ 177 WORD8 i1_l1_ref_idx; 178 179 /** 180 * L0 Ref Pic Buf ID 181 */ 182 WORD8 i1_l0_ref_pic_buf_id; 183 184 /** 185 * L1 Ref Pic Buf ID 186 */ 187 WORD8 i1_l1_ref_pic_buf_id; 188 189 } pu_mv_t; 190 191 /** 192 * PU information 193 */ 194 typedef struct 195 { 196 197 /** 198 * Motion Vectors 199 */ 200 pu_mv_t s_mv; 201 202 /** 203 * PU X position in terms of min PU (4x4) units 204 */ 205 UWORD32 b2_pos_x : 2; 206 207 /** 208 * PU Y position in terms of min PU (4x4) units 209 */ 210 UWORD32 b2_pos_y : 2; 211 212 /** 213 * PU width in pixels = (b2_wd + 1) << 2 214 */ 215 UWORD32 b2_wd : 2; 216 217 /** 218 * PU height in pixels = (b2_ht + 1) << 2 219 */ 220 UWORD32 b2_ht : 2; 221 222 /** 223 * Intra or Inter flag for each partition - 0 or 1 224 */ 225 UWORD32 b1_intra_flag : 1; 226 227 /** 228 * PRED_L0, PRED_L1, PRED_BI 229 */ 230 UWORD32 b2_pred_mode : 2; 231 232 } pu_t; 233 234 235 /** 236 * MB information to be stored for entire frame 237 */ 238 typedef struct 239 { 240 /** 241 * Transform sizes 0: 4x4, 1: 8x8, 242 */ 243 UWORD32 b1_trans_size : 1; 244 245 /** 246 * CBP - 4 bits for Y, 1 for U and 1 for V 247 */ 248 UWORD32 b6_cbp: 6; 249 250 /** 251 * Intra pred sizes 0: 4x4, 1: 8x8, 2: 16x16 252 */ 253 UWORD32 b2_intra_pred_size : 2; 254 255 /** 256 * Flag to signal if the current MB is IPCM 257 */ 258 UWORD32 b1_ipcm : 1; 259 260 }mb_t; 261 262 /*****************************************************************************/ 263 /* Info from last TU row of MB is stored in a row level neighbour buffer */ 264 /* , which will be used for Boundary Strength computation */ 265 /*****************************************************************************/ 266 /** 267 * MB neighbor info 268 */ 269 typedef struct 270 { 271 /** 272 * Slice index of the mb 273 */ 274 UWORD16 u2_slice_idx; 275 276 /*************************************************************************/ 277 /* CBF of bottom TU row (replicated in 4 pixel boundary) */ 278 /* MSB contains CBF of first TU in the last row and LSB contains CBF */ 279 /* of last TU in the last row */ 280 /*************************************************************************/ 281 /** 282 * CBF of bottom TU row 283 */ 284 UWORD16 u2_packed_cbf; 285 286 /*************************************************************************/ 287 /* QP of bottom TU row (replicated at 8 pixel boundary (Since QP can */ 288 /* not change at less than min CU granularity) */ 289 /*************************************************************************/ 290 /** 291 * QP of bottom TU row 292 */ 293 UWORD8 u1_qp; 294 295 } mb_top_ny_info_t; 296 297 /** 298 * MB level context 299 */ 300 typedef struct _mb_ctxt_t 301 { 302 /*************************************************************************/ 303 /* Tile boundary can be detected by looking at tile start x and tile */ 304 /* start y. And based on the tile, slice and frame boundary the */ 305 /* following will be initialized. */ 306 /*************************************************************************/ 307 /** 308 * Pointer to left MB 309 */ 310 /* If not available, this will be set to NULL */ 311 struct _mb_ctxt_t *ps_mb_left; 312 313 /** 314 * Pointer to top-left MB 315 */ 316 /* If not available, this will be set to NULL */ 317 mb_top_ny_info_t *ps_mb_ny_topleft; 318 319 /** 320 * Pointer to top MB 321 */ 322 /* If not available, this will be set to NULL */ 323 mb_top_ny_info_t *ps_mb_ny_top; 324 325 /** 326 * Pointer to top-right MB 327 */ 328 /* If not available, this will be set to NULL */ 329 mb_top_ny_info_t *ps_mb_ny_topright; 330 331 /*************************************************************************/ 332 /* Pointer to PU data. */ 333 /* This points to a MV Bank stored at frame level. Though this */ 334 /* pointer can be derived by reading offset at frame level, it is */ 335 /* stored here for faster access. Can be removed if storage of MB */ 336 /* structure is critical */ 337 /*************************************************************************/ 338 /** 339 * Pointer to PU data 340 */ 341 pu_t *ps_pu; 342 343 /*************************************************************************/ 344 /* Pointer to a PU map stored at frame level, */ 345 /* Though this pointer can be derived by multiplying MB address with */ 346 /* number of minTUs in a MB, it is stored here for faster access. */ 347 /* Can be removed if storage of MB structure is critical */ 348 /*************************************************************************/ 349 /** 350 * Pointer to a PU map stored at frame level 351 */ 352 UWORD8 *pu1_pu_map; 353 354 /** 355 * Number of TUs filled in as_tu 356 */ 357 /*************************************************************************/ 358 /* Having the first entry as 32 bit data, helps in keeping each of */ 359 /* the structures aligned to 32 bits at MB level */ 360 /*************************************************************************/ 361 WORD32 i4_tu_cnt; 362 363 /** 364 * Pointer to transform coeff data 365 */ 366 /*************************************************************************/ 367 /* Following format is repeated for every coded TU */ 368 /* Luma Block */ 369 /* num_coeffs : 16 bits */ 370 /* zero_cols : 8 bits ( 1 bit per 4 columns) */ 371 /* sig_coeff_map : ((TU Size * TU Size) + 31) >> 5 number of WORD32s */ 372 /* coeff_data : Non zero coefficients */ 373 /* Cb Block (only for last TU in 4x4 case else for every luma TU) */ 374 /* num_coeffs : 16 bits */ 375 /* zero_cols : 8 bits ( 1 bit per 4 columns) */ 376 /* sig_coeff_map : ((TU Size * TU Size) + 31) >> 5 number of WORD32s */ 377 /* coeff_data : Non zero coefficients */ 378 /* Cr Block (only for last TU in 4x4 case else for every luma TU) */ 379 /* num_coeffs : 16 bits */ 380 /* zero_cols : 8 bits ( 1 bit per 4 columns) */ 381 /* sig_coeff_map : ((TU Size * TU Size) + 31) >> 5 number of WORD32s */ 382 /* coeff_data : Non zero coefficients */ 383 /*************************************************************************/ 384 void *pv_coeff_data; 385 386 /** 387 * Slice to which the MB belongs to 388 */ 389 WORD32 i4_slice_idx; 390 391 /** 392 * MB column position 393 */ 394 WORD32 i4_pos_x; 395 396 /** 397 * MB row position 398 */ 399 WORD32 i4_pos_y; 400 401 /** 402 * Number of PUs filled in ps_pu 403 */ 404 WORD32 i4_pu_cnt; 405 406 /** 407 * Index of current PU being processed in ps_pu 408 */ 409 /* Scratch variable set to 0 at the start of any PU processing function */ 410 WORD32 i4_pu_idx; 411 412 /** 413 * Vertical Boundary strength 414 */ 415 /* Two bits per edge. 416 Stored in format. BS[15] | BS[14] | .. |BS[0]*/ 417 UWORD32 *pu4_vert_bs; 418 419 /** 420 * Horizontal Boundary strength 421 */ 422 423 /* Two bits per edge. 424 Stored in format. BS[15] | BS[14] | .. |BS[0]*/ 425 UWORD32 *pu4_horz_bs; 426 427 /** 428 * Qp array stored for each 8x8 pixels 429 */ 430 UWORD8 *pu1_qp; 431 432 /** 433 * Pointer to current frame's pu_t array 434 */ 435 pu_t *ps_frm_pu; 436 437 /** 438 * Pointer to current frame's pu_t index array, which stores starting index 439 * of pu_t for every MB 440 */ 441 UWORD32 *pu4_frm_pu_idx; 442 443 /** 444 * Pointer to current frame's pu map array 445 */ 446 UWORD8 *pu1_frm_pu_map; 447 448 /*************************************************************************/ 449 /* Need to add encoder specific elements for identifying the order of */ 450 /* coding for CU, TU and PU if any */ 451 /*************************************************************************/ 452 } mb_ctxt_t; 453 454 /*************************************************************************/ 455 /* The following describes how each of the CU cases are handled */ 456 /*************************************************************************/ 457 458 /*************************************************************************/ 459 /* For SKIP MB */ 460 /* One Inter PU with appropriate MV */ 461 /* One TU which says CBP is zero and size is 16x16 */ 462 /*************************************************************************/ 463 464 /*************************************************************************/ 465 /* For Inter MB */ 466 /* M Inter PU with appropriate MVs (M between 1 to 4) */ 467 /* Number of TUs derived based on transform size */ 468 /*************************************************************************/ 469 470 /*************************************************************************/ 471 /* For Intra MB */ 472 /* Number of TUs derived based on transform size */ 473 /* N Intra Modes are signaled along with coeff data at the start */ 474 /*************************************************************************/ 475 476 /*************************************************************************/ 477 /* For Intra PCM MB */ 478 /* One TU which says ipcm is 1 */ 479 /*************************************************************************/ 480 481 482 483 /** 484 * Structure to hold quantization parameters of an mb 485 */ 486 typedef struct 487 { 488 489 /* 490 * mb qp 491 */ 492 UWORD8 u1_mb_qp; 493 494 /* 495 * mb qp / 6 496 */ 497 UWORD8 u1_qp_div; 498 499 /* 500 * mb qp mod 6 501 */ 502 UWORD8 u1_qp_rem; 503 504 /* 505 * QP bits 506 */ 507 UWORD8 u1_qbits; 508 509 /* 510 * forward scale matrix 511 */ 512 const UWORD16 *pu2_scale_mat; 513 514 /* 515 * threshold matrix for quantization 516 */ 517 UWORD16 *pu2_thres_mat; 518 519 /* 520 * Threshold to compare the sad with 521 */ 522 UWORD16 *pu2_sad_thrsh; 523 524 /* 525 * qp dependent rounding constant 526 */ 527 UWORD32 u4_dead_zone; 528 529 /* 530 * inverse scale matrix 531 */ 532 const UWORD16 *pu2_iscale_mat; 533 534 /* 535 * Weight matrix in iquant 536 */ 537 UWORD16 *pu2_weigh_mat; 538 539 }quant_params_t; 540 541 /** 542 * Structure to hold Profile tier level info for a given layer 543 */ 544 545 typedef struct 546 { 547 /** 548 * NAL unit type 549 */ 550 WORD8 i1_nal_unit_type; 551 552 /** 553 * NAL ref idc 554 */ 555 WORD8 i1_nal_ref_idc; 556 557 558 } nal_header_t; 559 560 /** 561 * HRD parameters Info 562 */ 563 typedef struct 564 { 565 /** 566 * Specifies the number of alternative CPB specifications in the 567 * bitstream 568 */ 569 UWORD8 u1_cpb_cnt_minus1; 570 571 /** 572 * (together with bit_rate_value_minus1) specifies the 573 * maximum input bit rate of the i-th CPB 574 */ 575 UWORD32 u4_bit_rate_scale; 576 577 /** 578 * (together with cpb_size_du_value_minus1) specifies 579 * CPB size of the i-th CPB when the CPB operates 580 * at the access unit level 581 */ 582 UWORD32 u4_cpb_size_scale; 583 584 /** 585 * (together with bit_rate_scale) specifies the 586 * maximum input bit rate for the i-th CPB 587 */ 588 UWORD32 au4_bit_rate_value_minus1[32]; 589 /** 590 * together with cpb_size_scale to specify the 591 * CPB size when the CPB operates at the access unit level. 592 */ 593 UWORD32 au4_cpb_size_value_minus1[32]; 594 595 /** 596 * if 1, specifies that the HSS operates in a constant bit rate (CBR) mode 597 * if 0, specifies that the HSS operates in a intermittent bit rate (CBR) mode 598 */ 599 UWORD8 au1_cbr_flag[32]; 600 601 602 /** 603 * specifies the length, in bits for initial cpb delay (nal/vcl)syntax in bp sei 604 */ 605 UWORD8 u1_initial_cpb_removal_delay_length_minus1; 606 607 /** 608 * specifies the length, in bits for the cpb delay syntax in pt_sei 609 */ 610 UWORD8 u1_cpb_removal_delay_length_minus1; 611 612 /** 613 * specifies the length, in bits, of the pic_dpb_output_delay syntax element in the pt SEI message 614 */ 615 UWORD8 u1_dpb_output_delay_length_minus1; 616 617 /** 618 * Specifies length of the time offset parameter 619 */ 620 UWORD8 u1_time_offset_length; 621 622 }hrd_params_t; 623 624 625 /** 626 * Structure to hold VUI parameters Info 627 */ 628 typedef struct 629 { 630 /** 631 * indicates the presence of aspect_ratio 632 */ 633 UWORD8 u1_aspect_ratio_info_present_flag; 634 635 /** 636 * specifies the aspect ratio of the luma samples 637 */ 638 UWORD8 u1_aspect_ratio_idc; 639 640 /** 641 * width of the luma samples. user dependent 642 */ 643 UWORD16 u2_sar_width; 644 645 /** 646 * Height of the luma samples. user dependent 647 */ 648 UWORD16 u2_sar_height; 649 650 /** 651 * if 1, specifies that the overscan_appropriate_flag is present 652 * if 0, the preferred display method for the video signal is unspecified 653 */ 654 UWORD8 u1_overscan_info_present_flag; 655 656 /** 657 * if 1,indicates that the cropped decoded pictures output 658 * are suitable for display using overscan 659 */ 660 UWORD8 u1_overscan_appropriate_flag; 661 662 /** 663 * if 1 specifies that video_format, video_full_range_flag and 664 * colour_description_present_flag are present 665 */ 666 UWORD8 u1_video_signal_type_present_flag; 667 668 /** 669 * pal, secam, ntsc, ... 670 */ 671 UWORD8 u1_video_format; 672 673 /** 674 * indicates the black level and range of the luma and chroma signals 675 */ 676 UWORD8 u1_video_full_range_flag; 677 678 /** 679 * if 1,to 1 specifies that colour_primaries, transfer_characteristics 680 * and matrix_coefficients are present 681 */ 682 UWORD8 u1_colour_description_present_flag; 683 684 /** 685 * indicates the chromaticity coordinates of the source primaries 686 */ 687 UWORD8 u1_colour_primaries; 688 689 /** 690 * indicates the opto-electronic transfer characteristic of the source picture 691 */ 692 UWORD8 u1_transfer_characteristics; 693 694 /** 695 * the matrix coefficients used in deriving luma and chroma signals 696 * from the green, blue, and red primaries 697 */ 698 UWORD8 u1_matrix_coefficients; 699 700 /** 701 * if 1, specifies that chroma_sample_loc_type_top_field and 702 * chroma_sample_loc_type_bottom_field are present 703 */ 704 UWORD8 u1_chroma_loc_info_present_flag; 705 706 /** 707 * location of chroma samples 708 */ 709 UWORD8 u1_chroma_sample_loc_type_top_field; 710 711 UWORD8 u1_chroma_sample_loc_type_bottom_field; 712 713 /** 714 * Indicates the presence of the 715 * num_units_in_ticks, time_scale flag 716 */ 717 UWORD8 u1_vui_timing_info_present_flag; 718 719 /** 720 * Number of units that 721 * correspond to one increment of the 722 * clock. Indicates the resolution 723 */ 724 UWORD32 u4_vui_num_units_in_tick; 725 726 /** 727 * The number of time units that pass in one second 728 */ 729 UWORD32 u4_vui_time_scale; 730 731 /** 732 * Flag indicating that time difference between two frames is a constant 733 */ 734 UWORD8 u1_fixed_frame_rate_flag; 735 736 /** 737 * Indicates the presence of NAL HRD parameters 738 */ 739 UWORD8 u1_nal_hrd_parameters_present_flag; 740 741 /** 742 * NAL level HRD parameters 743 */ 744 hrd_params_t s_nal_hrd_parameters; 745 746 /** 747 * Indicates the presence of VCL HRD parameters 748 */ 749 UWORD8 u1_vcl_hrd_parameters_present_flag; 750 751 /** 752 * VCL level HRD parameters 753 */ 754 hrd_params_t s_vcl_hrd_parameters; 755 756 /** 757 * Specifies the HRD operational mode 758 */ 759 UWORD8 u1_low_delay_hrd_flag; 760 761 /** 762 * Indicates presence of SEI messages which include pic_struct syntax element 763 */ 764 UWORD8 u1_pic_struct_present_flag; 765 766 /** 767 * 1, specifies that the following cvs bitstream restriction parameters are present 768 */ 769 UWORD8 u1_bitstream_restriction_flag; 770 771 /** 772 * if 0, indicates that no pel outside the pic boundaries and 773 * no sub-pels derived using pels outside the pic boundaries is used for inter prediction 774 */ 775 UWORD8 u1_motion_vectors_over_pic_boundaries_flag; 776 777 /** 778 * Indicates a number of bytes not exceeded by the sum of the sizes of the VCL NAL units 779 * associated with any coded picture 780 */ 781 UWORD8 u1_max_bytes_per_pic_denom; 782 783 /** 784 * Indicates an upper bound for the number of bits of coding_unit() data 785 */ 786 UWORD8 u1_max_bits_per_mb_denom; 787 788 /** 789 * Indicate the maximum absolute value of a decoded horizontal MV component 790 * in quarter-pel luma units 791 */ 792 UWORD8 u1_log2_max_mv_length_horizontal; 793 794 /** 795 * Indicate the maximum absolute value of a decoded vertical MV component 796 * in quarter-pel luma units 797 */ 798 UWORD8 u1_log2_max_mv_length_vertical; 799 800 /** 801 * Max number of frames that are not synchronized in display and decode order 802 */ 803 UWORD8 u1_num_reorder_frames; 804 805 /** 806 * specifies required size of the HRD DPB in units of frame buffers. 807 */ 808 UWORD8 u1_max_dec_frame_buffering; 809 810 } vui_t; 811 812 813 /** 814 * Structure to hold SPS info 815 */ 816 typedef struct 817 { 818 /** 819 * profile_idc 820 */ 821 UWORD8 u1_profile_idc; 822 823 /** constraint_set0_flag */ 824 UWORD8 u1_constraint_set0_flag; 825 826 /** constraint_set1_flag */ 827 UWORD8 u1_constraint_set1_flag; 828 829 /** constraint_set2_flag */ 830 UWORD8 u1_constraint_set2_flag; 831 832 /** constraint_set3_flag */ 833 UWORD8 u1_constraint_set3_flag; 834 835 /** 836 * level_idc 837 */ 838 UWORD8 u1_level_idc; 839 840 /** 841 * seq_parameter_set_id 842 */ 843 UWORD8 u1_sps_id; 844 845 846 /** 847 * chroma_format_idc 848 */ 849 UWORD8 u1_chroma_format_idc; 850 851 /** 852 * residual_colour_transform_flag 853 */ 854 WORD8 i1_residual_colour_transform_flag; 855 856 /** 857 * bit_depth_luma_minus8 858 */ 859 WORD8 i1_bit_depth_luma; 860 861 /** 862 * bit_depth_chroma_minus8 863 */ 864 WORD8 i1_bit_depth_chroma; 865 866 /** 867 * qpprime_y_zero_transform_bypass_flag 868 */ 869 WORD8 i1_qpprime_y_zero_transform_bypass_flag; 870 871 /** 872 * seq_scaling_matrix_present_flag 873 */ 874 WORD8 i1_seq_scaling_matrix_present_flag; 875 876 /** 877 * seq_scaling_list_present_flag 878 */ 879 WORD8 ai1_seq_scaling_list_present_flag[8]; 880 881 /** 882 * log2_max_frame_num_minus4 883 */ 884 WORD8 i1_log2_max_frame_num; 885 886 /** 887 * MaxFrameNum in the standard 888 * 1 << i1_log2_max_frame_num 889 */ 890 WORD32 i4_max_frame_num; 891 892 /** 893 * pic_order_cnt_type 894 */ 895 WORD8 i1_pic_order_cnt_type; 896 897 /** 898 * log2_max_pic_order_cnt_lsb_minus4 899 */ 900 WORD8 i1_log2_max_pic_order_cnt_lsb; 901 902 /** 903 * MaxPicOrderCntLsb in the standard. 904 * 1 << log2_max_pic_order_cnt_lsb_minus4 905 */ 906 WORD32 i4_max_pic_order_cnt_lsb; 907 908 /** 909 * delta_pic_order_always_zero_flag 910 */ 911 WORD8 i1_delta_pic_order_always_zero_flag; 912 913 /** 914 * offset_for_non_ref_pic 915 */ 916 WORD32 i4_offset_for_non_ref_pic; 917 918 /** 919 * offset_for_top_to_bottom_field 920 */ 921 WORD32 i4_offset_for_top_to_bottom_field; 922 923 /** 924 * num_ref_frames_in_pic_order_cnt_cycle 925 */ 926 UWORD8 u1_num_ref_frames_in_pic_order_cnt_cycle; 927 928 /** 929 * Offset_for_ref_frame 930 */ 931 WORD32 ai4_offset_for_ref_frame[256]; 932 933 /** 934 * max_num_ref_frames 935 */ 936 UWORD8 u1_max_num_ref_frames; 937 938 /** 939 * gaps_in_frame_num_value_allowed_flag 940 */ 941 WORD8 i1_gaps_in_frame_num_value_allowed_flag; 942 943 /** 944 * pic_width_in_mbs_minus1 945 */ 946 WORD16 i2_pic_width_in_mbs_minus1; 947 948 /** 949 * pic_height_in_map_units_minus1 950 */ 951 WORD16 i2_pic_height_in_map_units_minus1; 952 953 /** 954 * frame_mbs_only_flag 955 */ 956 WORD8 i1_frame_mbs_only_flag; 957 958 /** 959 * mb_adaptive_frame_field_flag 960 */ 961 WORD8 i1_mb_adaptive_frame_field_flag; 962 963 /** 964 * direct_8x8_inference_flag 965 */ 966 WORD8 i1_direct_8x8_inference_flag; 967 968 /** 969 * frame_cropping_flag 970 */ 971 WORD8 i1_frame_cropping_flag; 972 973 /** 974 * frame_crop_left_offset 975 */ 976 WORD16 i2_frame_crop_left_offset; 977 978 /** 979 * frame_crop_right_offset 980 */ 981 WORD16 i2_frame_crop_right_offset; 982 983 /** 984 * frame_crop_top_offset 985 */ 986 WORD16 i2_frame_crop_top_offset; 987 988 /** 989 * frame_crop_bottom_offset 990 */ 991 WORD16 i2_frame_crop_bottom_offset; 992 993 /** 994 * vui_parameters_present_flag 995 */ 996 WORD8 i1_vui_parameters_present_flag; 997 998 /** 999 * vui_parameters_Structure_info 1000 */ 1001 vui_t s_vui_parameters; 1002 1003 /** 1004 * Flag to give status of SPS structure 1005 */ 1006 WORD8 i1_sps_valid; 1007 1008 /** 1009 * Coded Picture width 1010 */ 1011 WORD32 i2_pic_wd; 1012 1013 /** 1014 * Coded Picture height 1015 */ 1016 WORD32 i2_pic_ht; 1017 1018 /** 1019 * Picture width in MB units 1020 */ 1021 1022 WORD16 i2_pic_wd_in_mb; 1023 1024 /** 1025 * Picture height in MB units 1026 */ 1027 1028 WORD16 i2_pic_ht_in_mb; 1029 1030 /** 1031 * useDefaultScalingMatrixFlag 1032 */ 1033 WORD8 ai1_use_default_scaling_matrix_flag[8]; 1034 1035 /** 1036 * 4x4 Scaling lists after inverse zig zag scan 1037 */ 1038 UWORD16 au2_4x4_weight_scale[6][16]; 1039 1040 /** 1041 * 4x4 Scaling lists after inverse zig zag scan 1042 */ 1043 UWORD16 au2_8x8_weight_scale[2][64]; 1044 1045 } sps_t; 1046 1047 1048 /** 1049 * Structure to hold PPS info 1050 */ 1051 typedef struct 1052 { 1053 /** 1054 * pic_parameter_set_id 1055 */ 1056 UWORD8 u1_pps_id; 1057 1058 /** 1059 * seq_parameter_set_id 1060 */ 1061 UWORD8 u1_sps_id; 1062 1063 /** 1064 * Entropy coding : 0-VLC; 1 - CABAC 1065 */ 1066 UWORD8 u1_entropy_coding_mode_flag; 1067 1068 /* 1069 * Pic order present flag 1070 */ 1071 UWORD8 u1_pic_order_present_flag; 1072 1073 /* 1074 * Number of slice groups 1075 */ 1076 UWORD8 u1_num_slice_groups; 1077 1078 /* 1079 * Slice group map type 1080 */ 1081 UWORD8 u1_slice_group_map_type; 1082 1083 /* 1084 * Maximum reference picture index in the reference list 0 : range [0 - 31] 1085 */ 1086 WORD8 i1_num_ref_idx_l0_default_active; 1087 1088 /* 1089 * Maximum reference picture index in the reference list 1 : range [0 - 31] 1090 */ 1091 WORD8 i1_num_ref_idx_l1_default_active; 1092 1093 /** 1094 * weighted_pred_flag 1095 */ 1096 WORD8 i1_weighted_pred_flag; 1097 1098 /** 1099 * weighted_bipred_flag 1100 */ 1101 WORD8 i1_weighted_bipred_idc; 1102 1103 /** 1104 * pic_init_qp_minus26 1105 */ 1106 WORD8 i1_pic_init_qp; 1107 1108 /** 1109 * pic_init_qs_minus26 1110 */ 1111 WORD8 i1_pic_init_qs; 1112 1113 /* 1114 * Chroma QP offset w.r.t QPY {-12,12} 1115 */ 1116 WORD8 i1_chroma_qp_index_offset; 1117 1118 /** 1119 * deblocking_filter_control_present_flag 1120 */ 1121 WORD8 i1_deblocking_filter_control_present_flag; 1122 1123 /** 1124 * constrained_intra_pred_flag 1125 */ 1126 WORD8 i1_constrained_intra_pred_flag; 1127 1128 /** 1129 * redundant_pic_cnt_present_flag 1130 */ 1131 WORD8 i1_redundant_pic_cnt_present_flag; 1132 1133 /** 1134 * transform_8x8_mode_flag 1135 */ 1136 WORD8 i1_transform_8x8_mode_flag; 1137 1138 /** 1139 * pic_scaling_matrix_present_flag 1140 */ 1141 WORD8 i1_pic_scaling_matrix_present_flag; 1142 1143 /* 1144 * Second chroma QP offset 1145 */ 1146 WORD8 i1_second_chroma_qp_index_offset; 1147 1148 1149 /** 1150 * useDefaultScalingMatrixFlag 1151 */ 1152 WORD8 ai1_use_default_scaling_matrix_flag[8]; 1153 1154 /** 1155 * 4x4 Scaling lists after inverse zig zag scan 1156 */ 1157 UWORD16 au2_4x4_weight_scale[6][16]; 1158 1159 /** 1160 * 4x4 Scaling lists after inverse zig zag scan 1161 */ 1162 UWORD16 au2_8x8_weight_scale[2][64]; 1163 1164 1165 /** 1166 * pic_scaling_list_present_flag 1167 */ 1168 WORD8 ai1_pic_scaling_list_present_flag[8]; 1169 1170 /** 1171 * Flag to give status of PPS structure 1172 */ 1173 WORD8 i1_pps_valid; 1174 1175 1176 } pps_t; 1177 1178 /** 1179 * MMCO commands and params. 1180 */ 1181 typedef struct 1182 { 1183 /* memory management control operation command */ 1184 UWORD8 u1_memory_management_control_operation; 1185 1186 /* 1187 * Contains difference of pic nums of short-term pic/frame 1188 * 1. To signal it as "unused for reference" if mmco = 1 1189 * 2. To signal it as "used for long-term reference" if mmco = 3 1190 */ 1191 UWORD32 u4_difference_of_pic_nums_minus1; 1192 1193 /* Long-term pic num to be set as "unused for reference" */ 1194 UWORD8 u1_long_term_pic_num; 1195 1196 /* 1197 * Assign a long-term idx to a picture as follows 1198 * 1. Assign to a short-term pic if mmco = 3 1199 * 2. Assign to the current pic if mmco = 6 1200 */ 1201 UWORD8 u1_long_term_frame_idx; 1202 1203 /* 1204 * The max long-term idx. The long-term pics having idx above 1205 * are set as "unused for reference 1206 */ 1207 UWORD8 u1_max_long_term_frame_idx_plus1; 1208 1209 }mmco_prms_t; 1210 1211 /** 1212 * Structure to hold Reference picture list modification info 1213 */ 1214 typedef struct 1215 { 1216 /* ref_pic_list_modification_flag_l0 */ 1217 WORD8 i1_ref_pic_list_modification_flag_l0; 1218 1219 /* Modification required in list0 */ 1220 WORD8 i1_modification_of_pic_nums_idc_l0[MAX_MODICATION_IDC]; 1221 1222 /* 1223 * The absolute difference between the picture number of 1224 * the picture being moved to the current index in 1225 * list0 and the picture number prediction value 1226 */ 1227 UWORD32 u4_abs_diff_pic_num_minus1_l0[MAX_MODICATION_IDC]; 1228 1229 /* 1230 * The long-term picture number of the picture being moved 1231 * to the current index in list0 1232 */ 1233 UWORD8 u1_long_term_pic_num_l0[MAX_MODICATION_IDC]; 1234 1235 /* ref_pic_list_modification_flag_l1 */ 1236 WORD8 i1_ref_pic_list_modification_flag_l1; 1237 1238 /* Modification required in list1 */ 1239 WORD8 i1_modification_of_pic_nums_idc_l1[MAX_MODICATION_IDC]; 1240 1241 /* 1242 * The absolute difference between the picture number of 1243 * the picture being moved to the current index in 1244 * list1 and the picture number prediction value 1245 */ 1246 UWORD32 u4_abs_diff_pic_num_minus1_l1[MAX_MODICATION_IDC]; 1247 1248 /* 1249 * The long-term picture number of the picture being moved 1250 * to the current index in list1 1251 */ 1252 UWORD8 u1_long_term_pic_num_l1[MAX_MODICATION_IDC]; 1253 }rplm_t; 1254 1255 /** 1256 * Structure to hold Slice Header info 1257 */ 1258 typedef struct 1259 { 1260 1261 /* 1262 * nal_unit_type 1263 */ 1264 WORD8 i1_nal_unit_type; 1265 1266 /* 1267 * nal_unit_idc 1268 */ 1269 WORD8 i1_nal_unit_idc; 1270 1271 /* 1272 * first_mb_in_slice 1273 */ 1274 UWORD16 u2_first_mb_in_slice; 1275 1276 /* 1277 * slice_type 1278 */ 1279 UWORD8 u1_slice_type; 1280 1281 /* 1282 * pic_parameter_set_id 1283 */ 1284 UWORD8 u1_pps_id; 1285 1286 /* 1287 * frame_num 1288 */ 1289 WORD32 i4_frame_num; 1290 1291 /* 1292 * field_pic_flag 1293 */ 1294 WORD8 i1_field_pic_flag; 1295 1296 /* 1297 * bottom_field_flag 1298 */ 1299 WORD8 i1_bottom_field_flag; 1300 1301 /* 1302 * second_field 1303 */ 1304 WORD8 i1_second_field_flag; 1305 1306 /* 1307 * idr_pic_id 1308 */ 1309 UWORD16 u2_idr_pic_id ; 1310 1311 /* 1312 * pic_order_cnt_lsb 1313 */ 1314 UWORD16 i4_pic_order_cnt_lsb; 1315 1316 /* 1317 * delta_pic_order_cnt_bottom 1318 */ 1319 WORD32 i4_delta_pic_order_cnt_bottom; 1320 1321 /* 1322 * delta_pic_order_cnt 1323 */ 1324 WORD32 ai4_delta_pic_order_cnt[2]; 1325 1326 /* 1327 * redundant_pic_cnt 1328 */ 1329 UWORD8 u1_redundant_pic_cnt; 1330 1331 /* 1332 * direct_spatial_mv_pred_flag 1333 */ 1334 UWORD8 u1_direct_spatial_mv_pred_flag; 1335 1336 /* 1337 * num_ref_idx_active_override_flag 1338 */ 1339 UWORD8 u1_num_ref_idx_active_override_flag; 1340 1341 /* 1342 * num_ref_idx_l0_active 1343 */ 1344 WORD8 i1_num_ref_idx_l0_active; 1345 1346 /* 1347 * num_ref_idx_l1_active_minus1 1348 */ 1349 WORD8 i1_num_ref_idx_l1_active; 1350 1351 /* 1352 * ref_pic_list_reordering_flag_l0 1353 */ 1354 UWORD8 u1_ref_idx_reordering_flag_l0; 1355 1356 /* 1357 * ref_pic_list_reordering_flag_l1 1358 */ 1359 UWORD8 u1_ref_idx_reordering_flag_l1; 1360 1361 /** 1362 * Reference prediction list modification 1363 */ 1364 rplm_t s_rplm; 1365 1366 /** 1367 * L0 Reference pic lists 1368 */ 1369 ref_list_t as_ref_pic_list0[MAX_DPB_SIZE]; 1370 1371 /** 1372 * L1 Reference pic lists 1373 */ 1374 ref_list_t as_ref_pic_list1[MAX_DPB_SIZE]; 1375 1376 /* 1377 * no_output_of_prior_pics_flag 1378 */ 1379 UWORD8 u1_no_output_of_prior_pics_flag; 1380 1381 /* 1382 * long_term_reference_flag 1383 */ 1384 UWORD8 u1_long_term_reference_flag; 1385 1386 /* 1387 * adaptive_ref_pic_marking_mode_flag 1388 */ 1389 UWORD8 u1_adaptive_ref_pic_marking_mode_flag; 1390 1391 /* 1392 * Array to structures to store mmco commands 1393 * and parameters. 1394 */ 1395 mmco_prms_t as_mmco_prms[MAX_MMCO_COMMANDS]; 1396 1397 /* 1398 * entropy_coding_mode_flag 1399 */ 1400 WORD8 u1_entropy_coding_mode_flag; 1401 1402 /* 1403 * cabac_init_idc 1404 */ 1405 WORD8 i1_cabac_init_idc; 1406 1407 /* 1408 * i1_slice_qp 1409 */ 1410 WORD8 i1_slice_qp; 1411 1412 /* 1413 * sp_for_switch_flag 1414 */ 1415 UWORD8 u1_sp_for_switch_flag; 1416 1417 /* 1418 * slice_qs_delta 1419 */ 1420 UWORD8 u1_slice_qs; 1421 1422 /* 1423 * disable_deblocking_filter_idc 1424 */ 1425 WORD8 u1_disable_deblocking_filter_idc; 1426 1427 /* 1428 * slice_alpha_c0_offset_div2 1429 */ 1430 WORD8 i1_slice_alpha_c0_offset_div2; 1431 1432 /* 1433 * slice_beta_offset_div2 1434 */ 1435 WORD8 i1_slice_beta_offset_div2; 1436 1437 /* 1438 * num_slice_groups_minus1 1439 */ 1440 WORD8 u1_num_slice_groups_minus1; 1441 1442 /* 1443 * slice_group_change_cycle 1444 */ 1445 WORD8 u1_slice_group_change_cycle; 1446 1447 /** 1448 * Start MB X 1449 */ 1450 UWORD16 i2_mb_x; 1451 1452 /** 1453 * Start MB Y 1454 */ 1455 UWORD16 i2_mb_y; 1456 1457 /** 1458 * Absolute POC. Contains minimum of top and bottom POC. 1459 */ 1460 WORD32 i4_abs_pic_order_cnt; 1461 1462 /** 1463 * Absolute top POC. Contains top poc for frame or top 1464 * field. Invalid for bottom field. 1465 */ 1466 WORD32 i4_abs_top_pic_order_cnt; 1467 1468 /** 1469 * Absolute top POC. Contains bottom poc for frame or bottom 1470 * field. Invalid for top field. 1471 */ 1472 WORD32 i4_abs_bottom_pic_order_cnt; 1473 1474 /** Flag signaling if the current slice is ref slice */ 1475 UWORD8 i1_nal_ref_idc; 1476 1477 /** Flag to indicate if the current slice is MBAFF Frame */ 1478 UWORD8 u1_mbaff_frame_flag; 1479 1480 /** luma_log2_weight_denom */ 1481 UWORD8 u1_luma_log2_weight_denom; 1482 1483 /** chroma_log2_weight_denom */ 1484 UWORD8 u1_chroma_log2_weight_denom; 1485 1486 /** luma_weight_l0_flag */ 1487 UWORD8 au1_luma_weight_l0_flag[MAX_DPB_SIZE]; 1488 1489 /** luma_weight_l0 : (-128, 127 )is the range of weights 1490 * when weighted pred is enabled, 128 is default value */ 1491 WORD16 ai2_luma_weight_l0[MAX_DPB_SIZE]; 1492 1493 /** luma_offset_l0 : (-128, 127 )is the range of offset 1494 * when weighted pred is enabled, 0 is default value */ 1495 WORD8 ai1_luma_offset_l0[MAX_DPB_SIZE]; 1496 1497 /** chroma_weight_l0_flag */ 1498 UWORD8 au1_chroma_weight_l0_flag[MAX_DPB_SIZE]; 1499 1500 /** chroma_weight_l0 : (-128, 127 )is the range of weights 1501 * when weighted pred is enabled, 128 is default value*/ 1502 WORD16 ai2_chroma_weight_l0[MAX_DPB_SIZE][2]; 1503 1504 /** chroma_offset_l0 : (-128, 127 )is the range of offset 1505 * when weighted pred is enabled, 0 is default value*/ 1506 WORD8 ai1_chroma_offset_l0[MAX_DPB_SIZE][2]; 1507 1508 /** luma_weight_l0_flag */ 1509 UWORD8 au1_luma_weight_l1_flag[MAX_DPB_SIZE]; 1510 1511 /** luma_weight_l1 : (-128, 127 )is the range of weights 1512 * when weighted pred is enabled, 128 is default value */ 1513 WORD16 ai2_luma_weight_l1[MAX_DPB_SIZE]; 1514 1515 /** luma_offset_l1 : (-128, 127 )is the range of offset 1516 * when weighted pred is enabled, 0 is default value */ 1517 WORD8 ai1_luma_offset_l1[MAX_DPB_SIZE]; 1518 1519 /** chroma_weight_l1_flag */ 1520 UWORD8 au1_chroma_weight_l1_flag[MAX_DPB_SIZE]; 1521 1522 /** chroma_weight_l1 : (-128, 127 )is the range of weights 1523 * when weighted pred is enabled, 128 is default value */ 1524 WORD16 ai2_chroma_weight_l1[MAX_DPB_SIZE][2]; 1525 1526 /** chroma_offset_l1 :(-128, 127 )is the range of offset 1527 * when weighted pred is enabled, 0 is default value */ 1528 WORD8 ai1_chroma_offset_l1[MAX_DPB_SIZE][2]; 1529 }slice_header_t; 1530 1531 1532 /*****************************************************************************/ 1533 /* The following can be used to type cast coefficient data that is stored */ 1534 /* per subblock. Note that though i2_level is shown as an array that */ 1535 /* holds 16 coefficients, only the first few entries will be valid. Next */ 1536 /* subblocks data starts after the valid number of coefficients. Number */ 1537 /* of non-zero coefficients will be derived using number of non-zero bits */ 1538 /* in sig coeff map */ 1539 /*****************************************************************************/ 1540 1541 /** 1542 * Structure to hold coefficient info for a 2x2 chroma DC transform 1543 */ 1544 typedef struct 1545 { 1546 /** 1547 * significant coefficient map 1548 */ 1549 UWORD8 u1_sig_coeff_map; 1550 1551 /** 1552 * sub block position 1553 */ 1554 UWORD8 u1_subblk_pos; 1555 1556 /** 1557 * holds coefficients 1558 */ 1559 WORD16 ai2_level[2 * 2]; 1560 }tu_sblk2x2_coeff_data_t; 1561 1562 /** 1563 * Structure to hold coefficient info for a 4x4 transform 1564 */ 1565 typedef struct 1566 { 1567 /** 1568 * significant coefficient map 1569 */ 1570 UWORD16 u2_sig_coeff_map; 1571 1572 /** 1573 * sub block position 1574 */ 1575 UWORD16 u2_subblk_pos; 1576 1577 /** 1578 * holds coefficients 1579 */ 1580 WORD16 ai2_level[SUBBLK_COEFF_CNT]; 1581 }tu_sblk4x4_coeff_data_t; 1582 1583 /** 1584 * Structure to hold coefficient info for a 8x8 transform 1585 */ 1586 typedef struct 1587 { 1588 1589 /** 1590 * significant coefficient map 1591 */ 1592 UWORD32 au4_sig_coeff_map[2]; 1593 1594 /** 1595 * sub block position 1596 */ 1597 UWORD16 u2_subblk_pos; 1598 1599 /** 1600 * holds coefficients 1601 */ 1602 WORD16 ai2_level[TRANS_SIZE_8 * TRANS_SIZE_8]; 1603 }tu_blk8x8_coeff_data_t; 1604 1605 1606 /** 1607 * Structure to hold coefficient info for a 16x16 IPCM MB 1608 */ 1609 typedef struct 1610 { 1611 /** 1612 * holds coefficients 1613 */ 1614 UWORD8 au1_level[MB_SIZE * MB_SIZE * 3 / 2]; 1615 }tu_ipcm_coeff_data_t; 1616 1617 1618 typedef struct 1619 { 1620 /** 1621 * Transform sizes 0: 4x4, 1: 8x8, 1622 */ 1623 UWORD32 b1_trans_size : 1; 1624 1625 /** 1626 * Flag to signal if the current MB is IPCM 1627 */ 1628 UWORD32 b1_ipcm : 1; 1629 1630 /** 1631 * Intra pred sizes 0: 4x4, 1: 8x8, 2: 16x16 1632 */ 1633 UWORD32 b2_intra_pred_size : 2; 1634 1635 /** 1636 * Chroma intra mode 1637 */ 1638 UWORD32 b2_intra_chroma_pred_mode: 2; 1639 1640 /** 1641 * Number of coded subblocks in the current MB, for which 1642 * tu data is sent. Maximum of 27 subblocks in the following 1643 * order. 1644 * 1 4x4 luma DC(for intra16x16), 1645 * 16 4x4 luma, 1646 * 2 2x2 chroma DC, 1647 * 8 4x4 chroma, 1648 */ 1649 WORD32 b5_num_coded_sblks: 5; 1650 1651 /** 1652 * Flag to signal if 4x4 subblock for DC values (in INTRA 16x16 MB) 1653 * is coded 1654 */ 1655 UWORD32 b1_luma_dc_coded: 1; 1656 1657 /** 1658 * Flag to signal if 4x4 subblock for DC values (in INTRA 16x16 MB) 1659 * is coded 1660 */ 1661 UWORD32 b1_chroma_dc_coded: 1; 1662 1663 /** 1664 * CSBP - 16 bits, 1 bit for each 4x4 1665 * for intra16x16 mb_type only ac coefficients are 1666 */ 1667 UWORD32 b16_luma_csbp: 16; 1668 1669 /** 1670 * CSBP - 16 bits, 1 bit for each 4x4 1671 * for intra16x16 mb_type only ac coefficients are 1672 */ 1673 UWORD32 b8_chroma_csbp: 8; 1674 1675 /** 1676 * Luma Intra pred modes, 1677 * Based on intra pred size either 16, 4 or 1 entry will be 1678 * populated below. 1679 */ 1680 UWORD8 au1_luma_intra_modes[16]; 1681 1682 }intra_mb_t; 1683 1684 1685 typedef struct 1686 { 1687 /** 1688 * Transform sizes 0: 4x4, 1: 8x8, 1689 */ 1690 UWORD8 b1_trans_size : 1; 1691 1692 1693 /** 1694 * Skip flag 1695 */ 1696 UWORD8 b1_skip : 1; 1697 1698 1699 /** 1700 * Number of coded subblocks in the current MB, for which 1701 * tu data is sent. Maximum of 26 subblocks in the following 1702 * order. 1703 * 16 4x4 luma, 1704 * 2 2x2 chroma DC, 1705 * 8 4x4 chroma, 1706 */ 1707 WORD32 b5_num_coded_sblks: 5; 1708 1709 /** 1710 * CSBP - 16 bits, 1 bit for each 4x4 1711 * for intra16x16 mb_type only ac coefficients are 1712 */ 1713 UWORD32 b16_luma_csbp: 16; 1714 1715 /** 1716 * CSBP - 16 bits, 1 bit for each 4x4 1717 * for intra16x16 mb_type only ac coefficients are 1718 */ 1719 UWORD32 b16_chroma_csbp: 8; 1720 }inter_mb_t; 1721 1722 #endif /* _IH264_STRUCTS_H_ */ 1723