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      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 #ifndef _IH264D_STRUCTS_H_
     21 #define _IH264D_STRUCTS_H_
     22 
     23 #include "ih264_typedefs.h"
     24 #include "ih264_macros.h"
     25 #include "ih264_platform_macros.h"
     26 #include "iv.h"
     27 #include "ivd.h"
     28 
     29 #include "ih264d_transfer_address.h"
     30 #include "ih264d_defs.h"
     31 #include "ih264d_defs.h"
     32 #include "ih264d_bitstrm.h"
     33 #include "ih264d_debug.h"
     34 #include "ih264d_dpb_manager.h"
     35 /* includes for CABAC */
     36 #include "ih264d_cabac.h"
     37 #include "ih264d_dpb_manager.h"
     38 
     39 #include "ih264d_vui.h"
     40 #include "ih264d_sei.h"
     41 #include "iv.h"
     42 #include "ivd.h"
     43 
     44 #include "ih264_weighted_pred.h"
     45 #include "ih264_trans_quant_itrans_iquant.h"
     46 #include "ih264_inter_pred_filters.h"
     47 #include "ih264_mem_fns.h"
     48 #include "ih264_padding.h"
     49 #include "ih264_intra_pred_filters.h"
     50 #include "ih264_deblk_edge_filters.h"
     51 
     52 
     53 
     54 
     55 
     56 /** Number of Mb's whoose syntax will be read */
     57 /************************************************************/
     58 /* MB_GROUP should be a multiple of 2                       */
     59 /************************************************************/
     60 #define PARSE_MB_GROUP_4            4
     61 
     62 /* MV_SCRATCH_BUFS assumed to be pow(2) */
     63 #define MV_SCRATCH_BUFS             4
     64 
     65 #define TOP_FIELD_ONLY      0x02
     66 #define BOT_FIELD_ONLY      0x01
     67 
     68 #define MAX_REF_BUF_SIZE       (3776*2*2)
     69 
     70 struct _DecStruct;
     71 struct _DecMbInfo;
     72 
     73 typedef enum
     74 {
     75     MB_TYPE_SI_SLICE = 0,
     76     MB_TYPE_I_SLICE = 3,
     77     MB_SKIP_FLAG_P_SLICE = 11,
     78     MB_TYPE_P_SLICE = 14,
     79     SUB_MB_TYPE_P_SLICE = 21,
     80     MB_SKIP_FLAG_B_SLICE = 24,
     81     MB_TYPE_B_SLICE = 27,
     82     SUB_MB_TYPE_B_SLICE = 36,
     83     MVD_X = 40,
     84     MVD_Y = 47,
     85     REF_IDX = 54,
     86     MB_QP_DELTA = 60,
     87     INTRA_CHROMA_PRED_MODE = 64,
     88     PREV_INTRA4X4_PRED_MODE_FLAG = 68,
     89     REM_INTRA4X4_PRED_MODE = 69,
     90     MB_FIELD_DECODING_FLAG = 70,
     91     CBP_LUMA = 73,
     92     CBP_CHROMA = 77,
     93     CBF = 85,
     94     SIGNIFICANT_COEFF_FLAG_FRAME = 105,
     95     SIGNIFICANT_COEFF_FLAG_FLD = 277,
     96     LAST_SIGNIFICANT_COEFF_FLAG_FRAME = 166,
     97     LAST_SIGNIFICANT_COEFF_FLAG_FLD = 338,
     98     COEFF_ABS_LEVEL_MINUS1 = 227,
     99 
    100     /* High profile related Syntax element CABAC offsets */
    101     TRANSFORM_SIZE_8X8_FLAG = 399,
    102     SIGNIFICANT_COEFF_FLAG_8X8_FRAME = 402,
    103     LAST_SIGNIFICANT_COEFF_FLAG_8X8_FRAME = 417,
    104     COEFF_ABS_LEVEL_MINUS1_8X8 = 426,
    105     SIGNIFICANT_COEFF_FLAG_8X8_FIELD = 436,
    106     LAST_SIGNIFICANT_COEFF_FLAG_8X8_FIELD = 451
    107 
    108 } cabac_table_num_t;
    109 
    110 typedef enum
    111 {
    112     SIG_COEFF_CTXT_CAT_0_OFFSET = 0,
    113     SIG_COEFF_CTXT_CAT_1_OFFSET = 15,
    114     SIG_COEFF_CTXT_CAT_2_OFFSET = 29,
    115     SIG_COEFF_CTXT_CAT_3_OFFSET = 44,
    116     SIG_COEFF_CTXT_CAT_4_OFFSET = 47,
    117     SIG_COEFF_CTXT_CAT_5_OFFSET = 0,
    118     COEFF_ABS_LEVEL_CAT_0_OFFSET = 0,
    119     COEFF_ABS_LEVEL_CAT_1_OFFSET = 10,
    120     COEFF_ABS_LEVEL_CAT_2_OFFSET = 20,
    121     COEFF_ABS_LEVEL_CAT_3_OFFSET = 30,
    122     COEFF_ABS_LEVEL_CAT_4_OFFSET = 39,
    123     COEFF_ABS_LEVEL_CAT_5_OFFSET = 0
    124 } cabac_blk_cat_offset_t;
    125 
    126 /** Structure for the MV bank */
    127 typedef struct _mv_pred_t
    128 {
    129     WORD16 i2_mv[4]; /** 0- mvFwdX, 1- mvFwdY, 2- mvBwdX, 3- mvBwdY */
    130     WORD8 i1_ref_frame[2];
    131 
    132     UWORD8 u1_col_ref_pic_idx; /** Idx into the pic buff array */
    133     UWORD8 u1_pic_type; /** Idx into the pic buff array */
    134 
    135 } mv_pred_t;
    136 
    137 typedef struct
    138 {
    139     WORD32 i4_mv_indices[16];
    140     WORD8 i1_submb_num[16];
    141     WORD8 i1_partitionsize[16];
    142     WORD8 i1_num_partitions;
    143     WORD8 u1_vert_mv_scale;
    144     UWORD8 u1_col_zeroflag_change;
    145 } directmv_t;
    146 
    147 typedef struct pic_buffer_t
    148 {
    149     /**Different components of the picture */
    150     UWORD8 *pu1_buf1;
    151     UWORD8 *pu1_buf2;
    152     UWORD8 *pu1_buf3;
    153     UWORD16 u2_disp_width; /** Width of the display luma frame in pixels */
    154     UWORD16 u2_disp_height; /** Height of the display luma frame in pixels */
    155     UWORD32 u4_time_stamp; /** Time at which frame has to be displayed */
    156     UWORD16 u2_frm_wd_y; /** Width of the luma frame in pixels */
    157     UWORD16 u2_frm_wd_uv; /** Width of the chroma frame */
    158     UWORD16 u2_frm_ht_y; /** Height of the luma frame in pixels */
    159     UWORD16 u2_frm_ht_uv; /** Height of the chroma frame */
    160     /* Upto this is resembling the structure IH264DEC_DispUnit */
    161 
    162     /* If any member is to be added, add below this            */
    163 
    164     /* u4_ofst from start of picture buffer to display position for Y buffer  */
    165     UWORD16 u2_crop_offset_y;
    166 
    167     /* u4_ofst from start of picture buffer to display position for UV buffer */
    168     UWORD16 u2_crop_offset_uv;
    169 
    170     UWORD8 u1_is_short; /** (1: short 0: long) term ref pic */
    171     UWORD8 u1_pic_type; /** frame / field / complementary field pair */
    172     UWORD8 u1_pic_buf_id; /** Idx into the picBufAPI array */
    173     UWORD8 u1_mv_buf_id;
    174     WORD32 i4_seq;
    175     UWORD8 *pu1_col_zero_flag;
    176     mv_pred_t *ps_mv; /** Pointer to the MV bank array */
    177     WORD32 i4_poc; /** POC */
    178     WORD32 i4_pic_num;
    179     WORD32 i4_frame_num;
    180     WORD32 i4_top_field_order_cnt; /** TopPOC */
    181     WORD32 i4_bottom_field_order_cnt; /** BottomPOC */
    182     WORD32 i4_avg_poc; /** minPOC */
    183     UWORD8 u1_picturetype; /*Same as u1_pic_type..u1_pic_type gets overwritten whereas
    184      this doesnot get overwritten ...stores the pictype of
    185      frame/complementary field pair/ mbaff */
    186     UWORD8 u1_long_term_frm_idx;
    187     UWORD8 u1_long_term_pic_num;
    188     UWORD32 u4_pack_slc_typ; /* It will contain information about types of slices */
    189 
    190     /* ! */
    191     UWORD32 u4_ts;
    192     UWORD8 u1_pic_struct;/* Refer to SEI table D-1 */
    193 
    194 } pic_buffer_t;
    195 
    196 typedef struct
    197 {
    198     void *u4_add[4];
    199 } neighbouradd_t;
    200 
    201 typedef struct
    202 {
    203     const UWORD8 *pu1_inv_scan;
    204     void *pv_table[6];
    205 } cavlc_cntxt_t;
    206 
    207 /**
    208  ************************************************************************
    209  * \file ih264d_structs.h
    210  *
    211  * \brief
    212  *    Structures used in the H.264 decoder
    213  *
    214  * \date
    215  *    18/11/2002
    216  *
    217  * \author  Sriram Sethuraman
    218  *
    219  ************************************************************************
    220  */
    221 
    222 /**
    223  * Structure to represent a MV Bank buffer and col flag
    224  */
    225 typedef struct
    226 {
    227     /**
    228      *  Pointer to buffer that holds col flag.
    229      */
    230     void *pv_col_zero_flag;
    231 
    232     /**
    233      * Pointer to buffer that holds mv_pred
    234      */
    235     void *pv_mv;
    236 
    237  }col_mv_buf_t;
    238 
    239 
    240 typedef struct
    241 {
    242     UWORD8 u1_dydx; /** 4*dy + dx for Y comp / 8*dy + dx for UV comp */
    243     UWORD8 u1_is_bi_direct; /** 1: is bi-direct 0: forward / backward only   */
    244     UWORD8 u1_wght_pred_type; /** 0-default 1-singleWeighted 2-BiWeighted      */
    245     WORD8 i1_mb_partwidth; /** Width of MB partition                        */
    246     WORD8 i1_mb_partheight; /** Height of MB partition                       */
    247     WORD8 i1_mc_wd; /** Number of bytes in a DMA stride              */
    248     WORD8 i1_dma_ht; /** Number of strides                            */
    249 
    250     WORD8 i1_pod_ht; /** Flag specifying height of pad on demand      */
    251     /** 0 (No pod) -ve(Top pod) +ve(Bottom pod)      */
    252     UWORD16 u2_dst_stride; /** Stride value of the destination              */
    253     UWORD16 u2_u1_ref_buf_wd; /** Width of the ref buffer                      */
    254     UWORD16 u2_frm_wd;
    255     UWORD16 u2_dummy;
    256 
    257     UWORD8 *u1_pi1_wt_ofst_rec_v; /** Pointer to packed weight and u4_ofst          */
    258     UWORD8 *pu1_rec_y_u; /** MB partition address in row buffer           */
    259     UWORD8 *pu1_dma_dest_addr; /** Destination address for DMA transfer         */
    260     UWORD8 *pu1_y_ref;
    261     UWORD8 *pu1_u_ref;
    262     UWORD8 *pu1_v_ref;
    263 
    264     UWORD8 *pu1_pred;
    265     UWORD8 *pu1_pred_u;
    266     UWORD8 *pu1_pred_v;
    267     UWORD8 u1_dma_wd_y;
    268     UWORD8 u1_dma_ht_y;
    269     UWORD8 u1_dma_wd_uv;
    270     UWORD8 u1_dma_ht_uv;
    271 } pred_info_t;
    272 
    273 typedef struct
    274 {
    275     UWORD32 *pu4_wt_offst;
    276     WORD16 i2_mv[2];
    277 
    278     /***************************************************/
    279     /*packing information  i1_size_pos_info             */
    280     /* bit 1:0 -> X position in terms of  (4x4) units   */
    281     /* bit 3:2 -> Y position in terms of  (4x4) units   */
    282     /* bit 5:4 -> PU width 0:4,1:8,2:16                 */
    283     /* bit 7:6 -> PU height 0:4,1:8,2:16                */
    284      /***************************************************/
    285     WORD8 i1_size_pos_info;
    286 
    287     /***************************************************/
    288     /*packing information ref idx info                 */
    289     /* bit 5:0 ->ref_idx                              */
    290     /* bit 6:7   -> 0:l0,1:l1,2:bipred                  */
    291      /***************************************************/
    292     WORD8 i1_ref_idx_info;
    293 
    294     WORD8 i1_buf_id;
    295 
    296 
    297     UWORD8 u1_pic_type; /** frame /top field/bottom field/mbaff / complementary field pair */
    298 
    299 }pred_info_pkd_t;
    300 /*! Sequence level parameters */
    301 
    302 typedef struct
    303 {
    304     UWORD8 u1_seq_parameter_set_id; /** id for the seq par set 0-31 */
    305     UWORD8 u1_is_valid; /** is Seq Param set valid */
    306 
    307     UWORD16 u2_frm_wd_in_mbs; /** Frame width expressed in MB units */
    308     UWORD16 u2_frm_ht_in_mbs; /** Frame height expressed in MB units */
    309 
    310     /* Following are derived from the above two */
    311     UWORD16 u2_fld_ht_in_mbs; /** Field height expressed in MB units */
    312     UWORD16 u2_max_mb_addr; /** Total number of macroblocks in a coded picture */
    313     UWORD16 u2_total_num_of_mbs; /** Total number of macroblocks in a coded picture */
    314     UWORD32 u4_fld_ht; /** field height */
    315     UWORD32 u4_cwidth; /** chroma width */
    316     UWORD32 u4_chr_frm_ht; /** chroma height */
    317     UWORD32 u4_chr_fld_ht; /** chroma field height */
    318     UWORD8 u1_mb_aff_flag; /** 0 - no mb_aff; 1 - uses mb_aff */
    319 
    320     UWORD8 u1_profile_idc; /** profile value */
    321     UWORD8 u1_level_idc; /** level value */
    322 
    323     /* high profile related syntax elements   */
    324     WORD32 i4_chroma_format_idc;
    325     WORD32 i4_bit_depth_luma_minus8;
    326     WORD32 i4_bit_depth_chroma_minus8;
    327     WORD32 i4_qpprime_y_zero_transform_bypass_flag;
    328     WORD32 i4_seq_scaling_matrix_present_flag;
    329     UWORD8 u1_seq_scaling_list_present_flag[8];
    330     UWORD8 u1_use_default_scaling_matrix_flag[8];
    331     WORD16 i2_scalinglist4x4[6][16];
    332     WORD16 i2_scalinglist8x8[2][64];
    333     UWORD8 u1_more_than_one_slice_group_allowed_flag;
    334     UWORD8 u1_arbitrary_slice_order_allowed_flag;
    335     UWORD8 u1_redundant_slices_allowed_flag;
    336     UWORD8 u1_bits_in_frm_num; /** Number of bits in frame num */
    337     UWORD16 u2_u4_max_pic_num_minus1; /** Maximum frame num minus 1 */
    338     UWORD8 u1_pic_order_cnt_type; /** 0 - 2 indicates the method to code picture order count */
    339     UWORD8 u1_log2_max_pic_order_cnt_lsb_minus;
    340     WORD32 i4_max_pic_order_cntLsb;
    341     UWORD8 u1_num_ref_frames_in_pic_order_cnt_cycle;
    342     UWORD8 u1_delta_pic_order_always_zero_flag;
    343     WORD32 i4_ofst_for_non_ref_pic;
    344     WORD32 i4_ofst_for_top_to_bottom_field;
    345     WORD32 i4_ofst_for_ref_frame[MAX_NUM_REF_FRAMES_OFFSET];
    346     UWORD8 u1_num_ref_frames;
    347     UWORD8 u1_gaps_in_frame_num_value_allowed_flag;
    348     UWORD8 u1_frame_mbs_only_flag; /** 1 - frame only; 0 - field/frame pic */
    349     UWORD8 u1_direct_8x8_inference_flag;
    350     UWORD8 u1_vui_parameters_present_flag;
    351     vui_t s_vui;
    352 } dec_seq_params_t;
    353 
    354 typedef struct
    355 {
    356     UWORD16 u2_frm_wd_in_mbs; /** Frame width expressed in MB units    */
    357     UWORD16 u2_frm_ht_in_mbs; /** Frame height expressed in MB units   */
    358     UWORD8 u1_frame_mbs_only_flag; /** 1 - frame only; 0 - field/frame pic  */
    359     UWORD8 u1_profile_idc; /** profile value                        */
    360     UWORD8 u1_level_idc; /** level value                          */
    361     UWORD8 u1_direct_8x8_inference_flag;
    362     UWORD8 u1_eoseq_pending;
    363 } prev_seq_params_t;
    364 
    365 /** Picture level parameters */
    366 typedef struct
    367 {
    368     dec_seq_params_t *ps_sps; /** applicable seq. parameter set */
    369 
    370     /* High profile related syntax elements */
    371     WORD32 i4_transform_8x8_mode_flag;
    372     WORD32 i4_pic_scaling_matrix_present_flag;
    373     UWORD8 u1_pic_scaling_list_present_flag[8];
    374     UWORD8 u1_pic_use_default_scaling_matrix_flag[8];
    375     WORD16 i2_pic_scalinglist4x4[6][16];
    376     WORD16 i2_pic_scalinglist8x8[2][64];
    377     WORD8 i1_second_chroma_qp_index_offset;
    378 
    379     UWORD32 u4_slice_group_change_rate;
    380     UWORD8 *pu1_slice_groupmb_map; /** MB map with slice membership labels */
    381     UWORD8 u1_pic_parameter_set_id; /** id for the picture par set 0-255*/
    382     UWORD8 u1_entropy_coding_mode; /** Entropy coding : 0-VLC; 1 - CABAC */
    383     UWORD8 u1_num_slice_groups; /** Number of slice groups */
    384     UWORD8 u1_pic_init_qp; /** Initial QPY for the picture {-26,25}*/
    385     WORD8 i1_chroma_qp_index_offset; /** Chroma QP u4_ofst w.r.t QPY {-12,12} */
    386     UWORD8 u1_dblk_filter_parms_flag; /** Slice layer has deblocking filter parameters */
    387     UWORD8 u1_constrained_intra_pred_flag; /** Constrained intra prediction u4_flag */
    388     UWORD8 u1_redundant_pic_cnt_present_flag; /** Redundant_pic_cnt is in slices using this PPS */
    389     UWORD8 u1_pic_order_present_flag; /** Pic order present u4_flag */
    390     UWORD8 u1_num_ref_idx_lx_active[2]; /** Maximum reference picture index in the reference list 0 : range [1 - 15] */
    391     UWORD8 u1_wted_pred_flag;
    392     UWORD8 u1_wted_bipred_idc;
    393     UWORD8 u1_pic_init_qs;
    394     UWORD8 u1_deblocking_filter_parameters_present_flag;
    395     UWORD8 u1_vui_pic_parameters_flag;
    396     UWORD8 u1_mb_slice_group_map_type;
    397     UWORD8 u1_slice_group_change_direction_flag;
    398     UWORD8 u1_frame_cropping_flag;
    399     UWORD8 u1_frame_cropping_rect_left_ofst;
    400     UWORD8 u1_frame_cropping_rect_right_ofst;
    401     UWORD8 u1_frame_cropping_rect_top_ofst;
    402     UWORD8 u1_frame_cropping_rect_bottom_ofst;
    403     void * pv_codec_handle; /* For Error Handling */
    404     WORD32 i4_top_field_order_cnt;
    405     WORD32 i4_bottom_field_order_cnt;
    406     WORD32 i4_avg_poc;
    407     UWORD8 u1_is_valid; /** is Pic Param set valid */
    408 } dec_pic_params_t;
    409 
    410 /** Picture Order Count Paramsters */
    411 typedef struct
    412 {
    413     WORD32 i4_pic_order_cnt_lsb;
    414     WORD32 i4_pic_order_cnt_msb;
    415     WORD32 i4_delta_pic_order_cnt_bottom;
    416     WORD32 i4_delta_pic_order_cnt[2];
    417     WORD32 i4_prev_frame_num_ofst;
    418     UWORD8 u1_mmco_equalto5;
    419     UWORD8 u1_bot_field;
    420     UWORD16 u2_frame_num;
    421     WORD32 i4_top_field_order_count;
    422     WORD32 i4_bottom_field_order_count;
    423 } pocstruct_t;
    424 
    425 /*****************************************************************************/
    426 /* parse_mb_pers_info contains necessary mb info data required persistently  */
    427 /* in the form of top and left neighbours.                                   */
    428 /*****************************************************************************/
    429 typedef struct
    430 {
    431     void *u4_pic_addrress[4]; /* picture address for BS calc */
    432     WORD8 pi1_intrapredmodes[4]; /* calc Intra pred modes */
    433     UWORD8 pu1_nnz_y[4];
    434     UWORD8 pu1_nnz_uv[4];
    435     UWORD8 u1_mb_fld;
    436     UWORD8 u1_mb_type;
    437     UWORD16 u2_luma_csbp; /* Luma csbp used for BS calc */
    438     UWORD8 u1_tran_form8x8;
    439 } mb_neigbour_params_t;
    440 
    441 /* This info is required for decoding purposes except Deblockng */
    442 typedef struct _DecMbInfo
    443 {
    444     UWORD8 u1_mb_type; /** macroblock type: I/P/B/SI/SP */
    445     UWORD8 u1_chroma_pred_mode;
    446     UWORD8 u1_cbp;
    447     UWORD8 u1_mb_mc_mode; /** 16x16, 2 16x8, 2 8x16, 4 8x8 */
    448     UWORD8 u1_topmb; /** top Mb u4_flag */
    449     UWORD8 u1_mb_ngbr_availablity;
    450     UWORD8 u1_end_of_slice;
    451     UWORD8 u1_mb_field_decodingflag;
    452     UWORD8 u1_topleft_mb_fld;
    453     UWORD8 u1_topleft_mbtype;
    454     WORD8 i1_offset;
    455     UWORD8 u1_Mux;
    456     UWORD8 u1_qp_div6;
    457     UWORD8 u1_qp_rem6;
    458     UWORD8 u1_qpc_div6;
    459     UWORD8 u1_qpcr_div6;
    460     UWORD8 u1_qpc_rem6;
    461     UWORD8 u1_qpcr_rem6;
    462     UWORD8 u1_tran_form8x8;
    463     UWORD8 u1_num_pred_parts;
    464     UWORD8 u1_yuv_dc_block_flag;
    465     UWORD16 u2_top_right_avail_mask;
    466     UWORD16 u2_top_left_avail_mask;
    467     UWORD16 u2_luma_csbp; /** Coded 4x4 Sub Block Pattern */
    468     UWORD16 u2_chroma_csbp; /** Coded 4x4 Sub Block Pattern */
    469     UWORD16 u2_mbx;
    470     UWORD16 u2_mby;
    471     UWORD16 u2_mask[2];
    472 
    473     UWORD32 u4_pred_info_pkd_idx;
    474 
    475     mb_neigbour_params_t *ps_left_mb;
    476     mb_neigbour_params_t *ps_top_mb;
    477     mb_neigbour_params_t *ps_top_right_mb;
    478     mb_neigbour_params_t *ps_curmb;
    479 } dec_mb_info_t;
    480 
    481 
    482 /** Slice level parameters */
    483 typedef struct
    484 {
    485     dec_pic_params_t *ps_pps; /** PPS used */
    486     WORD32 i4_delta_pic_order_cnt[2];
    487     WORD32 i4_poc; /** Pic order cnt of picture to which slice belongs*/
    488     UWORD32 u4_idr_pic_id; /** IDR pic ID */
    489     UWORD16 u2_first_mb_in_slice; /** Address of first MB in slice*/
    490     UWORD16 u2_frame_num; /** Frame number from prev IDR pic */
    491 
    492     UWORD8 u1_mbaff_frame_flag; /** Mb adaptive frame field u4_flag */
    493     UWORD8 u1_field_pic_flag; /** Field picture or not */
    494     UWORD8 u1_bottom_field_flag; /** If slice belongs to bot field pic */
    495     UWORD8 u1_slice_type; /** I/P/B/SI/SP */
    496     WORD32 i4_pic_order_cnt_lsb; /** Picture Order Count */
    497     UWORD8 u1_slice_qp; /** Add slice_qp_delta to pic_init_QP */
    498     UWORD8 u1_disable_dblk_filter_idc; /** 0-dblk all edges; 1 - suppress; 2 - suppress only edges */
    499     WORD8 i1_slice_alpha_c0_offset; /** dblk: alpha and C0 table u4_ofst {-12,12}*/
    500     WORD8 i1_slice_beta_offset; /** dblk: beta table u4_ofst {-12, 12}*/
    501     UWORD8 u1_sp_for_switch_flag;
    502     UWORD8 u1_no_output_of_prior_pics_flag;
    503     UWORD8 u1_long_term_reference_flag;
    504     UWORD8 u1_num_ref_idx_lx_active[2];
    505     UWORD8 u1_cabac_init_idc; /** cabac_init_idc */
    506     UWORD8 u1_num_ref_idx_active_override_flag;
    507     UWORD8 u1_direct_spatial_mv_pred_flag;
    508     WORD32 (*pf_decodeDirect)(struct _DecStruct *ps_dec,
    509                               UWORD8 u1_wd_x,
    510                               dec_mb_info_t *ps_cur_mb_info,
    511                               UWORD8 u1_mb_num);
    512     UWORD8 u1_redundant_pic_cnt;
    513     WORD8 i1_slice_qs_delta;
    514     UWORD8 u1_nal_ref_idc; /** NAL ref idc of the Slice NAL unit */
    515     UWORD8 u1_nal_unit_type; /** NAL unit type of the Slice NAL */
    516     UWORD8 u1_direct_8x8_inference_flag;
    517     UWORD8 u1_mmco_equalto5; /** any of the MMCO command equal to 5 */
    518     UWORD8 u1_pic_order_cnt_type;
    519     pocstruct_t s_POC;
    520     /* DataStructures required for weighted prediction */
    521     UWORD16 u2_log2Y_crwd; /** Packed luma and chroma log2_weight_denom */
    522     /* [list0/list1]:[ref pics index]:[0-Y 1-Cb 2-Cr] [weight/u4_ofst],
    523      weights and offsets are signed numbers, since they are packed, it is defined
    524      unsigned. LSB byte : weight and MSB byte: u4_ofst */
    525     UWORD32 u4_wt_ofst_lx[2][MAX_REF_BUFS][3];
    526     void * pv_codec_handle; /* For Error Handling */
    527 
    528     /*  This is used when reordering is done in Forward or    */
    529     /*  backward lists. This is because reordering can point  */
    530     /*  to any valid entry in initial list irrespective of    */
    531     /*  num_ref_idx_active which could be overwritten using   */
    532     /*  ref_idx_reorder_flag                                  */
    533     UWORD8 u1_initial_list_size[2];
    534     UWORD32 u4_mbs_in_slice;
    535 } dec_slice_params_t;
    536 
    537 
    538 typedef struct
    539 {
    540     UWORD8 u1_mb_type; /* Bit representations, X- reserved */
    541     /** |Field/Frame|X|X|X|X|Bslice u4_flag|PRED_NON_16x16 u4_flag |Intra Mbflag| */
    542     UWORD8 u1_mb_qp;
    543     UWORD8 u1_deblocking_mode; /** dblk: Mode [ NO / NO TOP / NO LEFT] filter */
    544     WORD8 i1_slice_alpha_c0_offset; /** dblk: alpha and C0 table u4_ofst {-12,12}*/
    545     WORD8 i1_slice_beta_offset; /** dblk: beta table u4_ofst {-12, 12}*/
    546     UWORD8 u1_single_call;
    547     UWORD8 u1_topmb_qp;
    548     UWORD8 u1_left_mb_qp;
    549     UWORD32 u4_bs_table[10]; /* Boundary strength */
    550 
    551 } deblk_mb_t;
    552 
    553 typedef struct
    554 {
    555     UWORD8 u1_mb_type;
    556     UWORD8 u1_mb_qp;
    557 } deblkmb_neighbour_t;
    558 
    559 #define MAX_MV_RESIDUAL_INFO_PER_MB    32
    560 #define MAX_REFIDX_INFO_PER_MB         4
    561 #define PART_NOT_DIRECT                0
    562 #define PART_DIRECT_8x8                1
    563 #define PART_DIRECT_16x16              2
    564 typedef struct
    565 {
    566     UWORD8 u1_is_direct;
    567     UWORD8 u1_pred_mode;
    568     UWORD8 u1_sub_mb_num;
    569     UWORD8 u1_partheight;
    570     UWORD8 u1_partwidth;
    571 } parse_part_params_t;
    572 
    573 typedef struct
    574 {
    575     UWORD8 u1_isI_mb;
    576     UWORD8 u1_num_part;
    577     UWORD32 *pu4_wt_offst[MAX_REFIDX_INFO_PER_MB];
    578     WORD8 i1_ref_idx[2][MAX_REFIDX_INFO_PER_MB];
    579     UWORD8 u1_col_info[MAX_REFIDX_INFO_PER_MB];
    580 } parse_pmbarams_t;
    581 
    582 typedef struct
    583 {
    584     UWORD8 u1_vert_pad_top; /* flip-flop u4_flag remembering pad area (Vert) */
    585     UWORD8 u1_vert_pad_bot; /* flip-flop u4_flag remembering pad area (Vert) */
    586     UWORD8 u1_horz_pad; /* flip-flop u4_flag remembering pad area (Vert) */
    587     UWORD8 u1_pad_len_y_v; /* vertical pad amount for luma               */
    588     UWORD8 u1_pad_len_cr_v; /* vertical pad amount for chroma             */
    589 } pad_mgr_t;
    590 
    591 
    592 #define ACCEPT_ALL_PICS   (0x00)
    593 #define REJECT_CUR_PIC    (0x01)
    594 #define REJECT_PB_PICS    (0x02)
    595 
    596 #define MASK_REJECT_CUR_PIC (0xFE)
    597 #define MASK_REJECT_PB_PICS (0xFD)
    598 
    599 #define PIC_TYPE_UNKNOWN  (0xFF)
    600 #define PIC_TYPE_I        (0x00)
    601 #define SYNC_FRM_DEFAULT  (0xFFFFFFFF)
    602 #define INIT_FRAME        (0xFFFFFF)
    603 
    604 typedef struct dec_err_status_t
    605 {
    606     UWORD8 u1_cur_pic_type;
    607     UWORD8 u1_pic_aud_i;
    608     UWORD8 u1_err_flag;
    609     UWORD32 u4_frm_sei_sync;
    610     UWORD32 u4_cur_frm;
    611 } dec_err_status_t;
    612 
    613 /**************************************************************************/
    614 /* Structure holds information about all high profile toolsets            */
    615 /**************************************************************************/
    616 typedef struct
    617 {
    618     /*****************************************/
    619     /* variables required for scaling        */
    620     /*****************************************/
    621     UWORD8 u1_scaling_present;
    622     WORD16 *pi2_scale_mat[8];
    623 
    624     /*************************************************/
    625     /* scaling matrices for frame macroblocks after  */
    626     /* inverse scanning                              */
    627     /*************************************************/
    628     WORD16 i2_scalinglist4x4[6][16];
    629     WORD16 i2_scalinglist8x8[2][64];
    630 
    631 
    632     /*****************************************/
    633     /* variables required for transform8x8   */
    634     /*****************************************/
    635     UWORD8 u1_transform8x8_present;
    636     UWORD8 u1_direct_8x8_inference_flag;
    637     /* temporary variable to get noSubMbPartSizeLessThan8x8Flag from ih264d_parse_bmb_non_direct_cavlc */
    638     UWORD8 u1_no_submb_part_size_lt8x8_flag;
    639 
    640     /* needed for inverse scanning */
    641     cavlc_cntxt_t s_cavlc_ctxt;
    642 
    643     /* contexts for the CABAC related parsing */
    644     bin_ctxt_model_t *ps_transform8x8_flag;
    645     bin_ctxt_model_t *ps_sigcoeff_8x8_frame;
    646     bin_ctxt_model_t *ps_last_sigcoeff_8x8_frame;
    647     bin_ctxt_model_t *ps_coeff_abs_levelminus1;
    648     bin_ctxt_model_t *ps_sigcoeff_8x8_field;
    649     bin_ctxt_model_t *ps_last_sigcoeff_8x8_field;
    650 
    651 /* variables required for intra8x8 */
    652 
    653 /* variables required for handling different Qp for Cb and Cr */
    654 
    655 } high_profile_tools_t;
    656 
    657 typedef struct
    658 {
    659     UWORD32 u4_num_bufs; /* Number of buffers in each display frame. 2 for 420SP and 3 for 420P and so on */
    660     void *buf[3]; /* Pointers to each of the components */
    661     UWORD32 u4_bufsize[3];
    662     UWORD32 u4_ofst[3];
    663 } disp_buf_t;
    664 typedef struct _dec_slice_struct
    665 {
    666     volatile UWORD32 u4_first_mb_in_slice;
    667     volatile UWORD32 slice_type;
    668     volatile UWORD16 u2_log2Y_crwd;
    669     volatile void **ppv_map_ref_idx_to_poc;
    670     volatile void *pv_tu_coeff_data_start;
    671 } dec_slice_struct_t;
    672 
    673 /**
    674  * Structure to hold coefficient info for a 4x4 transform
    675  */
    676 typedef struct
    677 {
    678     /**
    679      * significant coefficient map
    680      */
    681     UWORD16 u2_sig_coeff_map;
    682 
    683     /**
    684      * holds coefficients
    685      */
    686     WORD16  ai2_level[16];
    687 }tu_sblk4x4_coeff_data_t;
    688 
    689 /**
    690  * Structure to hold coefficient info for a 8x8 transform
    691  */
    692 typedef struct
    693 {
    694 
    695     /**
    696      * significant coefficient map
    697      */
    698     UWORD32 au4_sig_coeff_map[2];
    699 
    700     /**
    701      * holds coefficients
    702      */
    703     WORD16  ai2_level[64];
    704 }tu_blk8x8_coeff_data_t;
    705 
    706 /** Aggregating structure that is globally available */
    707 typedef struct _DecStruct
    708 {
    709 
    710     /* Add below all other static memory allocations and pointers to items
    711      that are dynamically allocated once per session */
    712     dec_bit_stream_t *ps_bitstrm;
    713     dec_seq_params_t *ps_cur_sps;
    714     dec_pic_params_t *ps_cur_pps;
    715     dec_slice_params_t *ps_cur_slice;
    716 
    717     dec_pic_params_t *ps_pps;
    718     dec_seq_params_t *ps_sps;
    719     const UWORD16 *pu2_quant_scale_y;
    720     const UWORD16 *pu2_quant_scale_u;
    721     const UWORD16 *pu2_quant_scale_v;
    722     UWORD16 u2_mbx;
    723     UWORD16 u2_mby;
    724 
    725     UWORD16 u2_frm_wd_y; /** Width for luma buff */
    726     UWORD16 u2_frm_ht_y; /** Height for luma buff */
    727     UWORD16 u2_frm_wd_uv; /** Width for chroma buff */
    728     UWORD16 u2_frm_ht_uv; /** Height for chroma buff */
    729     UWORD16 u2_frm_wd_in_mbs; /** Frame width expressed in MB units */
    730     UWORD16 u2_frm_ht_in_mbs; /** Frame height expressed in MB units */
    731     WORD32 i4_submb_ofst; /** Offset in subMbs from the top left edge */
    732     /* Pointer to colocated Zero frame Image, will be used in B_DIRECT mode */
    733     /* colZeroFlag | // 0th bit
    734      field_flag  | // 1st bit
    735      XX          | // 2:3 bit don't cares
    736      subMbMode   | // 4:5 bit
    737      MbMode      | // 6:7 bit */
    738 
    739     UWORD8 *pu1_col_zero_flag;
    740 
    741     UWORD16 u2_pic_wd; /** Width of the picture being decoded */
    742     UWORD16 u2_pic_ht; /** Height of the picture being decoded */
    743 
    744     UWORD8 u1_first_slice_in_stream;
    745     UWORD8 u1_mb_ngbr_availablity;
    746     UWORD8 u1_ref_idxl0_active_minus1;
    747     UWORD8 u1_qp;
    748     UWORD8 u1_qp_y_div6;
    749     UWORD8 u1_qp_u_div6;
    750     UWORD8 u1_qp_y_rem6;
    751     UWORD8 u1_qp_u_rem6;
    752 
    753     /*********************************/
    754     /* configurable mb-group numbers */
    755     /* very critical to the decoder  */
    756     /*********************************/
    757     /************************************************************/
    758     /* MB_GROUP should be a multiple of 2                       */
    759     /************************************************************/
    760     UWORD8 u1_recon_mb_grp;
    761     UWORD8 u1_recon_mb_grp_pair;
    762     /* Variables to handle Cabac */
    763     decoding_envirnoment_t s_cab_dec_env; /* < Structure for decoding_envirnoment_t */
    764     /* These things need to be updated at each MbLevel */
    765     WORD8 i1_next_ctxt_idx; /* < next Ctxt Index */
    766     UWORD8 u1_currB_type;
    767     WORD8 i1_prev_mb_qp_delta; /* Prev MbQpDelta */
    768     UWORD8 u1_nal_unit_type;
    769 
    770     ctxt_inc_mb_info_t *p_ctxt_inc_mb_map; /* Pointer to ctxt_inc_mb_info_t map */
    771     ctxt_inc_mb_info_t *p_left_ctxt_mb_info; /* Pointer to left ctxt_inc_mb_info_t */
    772     ctxt_inc_mb_info_t *p_top_ctxt_mb_info; /* Pointer to top ctxt_inc_mb_info_t */
    773     ctxt_inc_mb_info_t *ps_curr_ctxt_mb_info; /* Pointer to current ctxt_inc_mb_info_t */
    774     ctxt_inc_mb_info_t *ps_def_ctxt_mb_info; /* Pointer to default ctxt_inc_mb_info_t */
    775 
    776     /* mv contexts for mv decoding using cabac */
    777     //UWORD8   u1_top_mv_ctxt_inc[4][4];
    778     /* Dimensions for u1_left_mv_ctxt_inc_arr is [2][4][4] for Mbaff case */
    779     UWORD8 u1_left_mv_ctxt_inc_arr[2][4][4];
    780     UWORD8 (*pu1_left_mv_ctxt_inc)[4];
    781 
    782     UWORD8 u1_sub_mb_num;
    783     UWORD8 u1_B; /** if B slice u1_B = 1 else 0 */
    784     WORD16 i2_only_backwarddma_info_idx;
    785     mv_pred_t *ps_mv; /** Pointer to the MV bank array */
    786     mv_pred_t *ps_mv_bank_cur; /** Pointer to the MV bank array */
    787     mv_pred_t s_default_mv_pred; /** Structure containing the default values
    788      for MV predictor */
    789 
    790     pred_info_t *ps_pred; /** Stores info to cfg MC */
    791     pred_info_t *ps_pred_start;
    792 
    793     UWORD32 u4_pred_info_idx;
    794     pred_info_pkd_t *ps_pred_pkd;
    795     pred_info_pkd_t *ps_pred_pkd_start;
    796     UWORD32 u4_pred_info_pkd_idx;
    797     UWORD8 *pu1_ref_buff; /** Destination buffer for DMAs */
    798     UWORD32 u4_dma_buf_idx;
    799 
    800     UWORD8 *pu1_y;
    801     UWORD8 *pu1_u;
    802     UWORD8 *pu1_v;
    803 
    804     WORD16 *pi2_y_coeff;
    805     UWORD8 *pu1_inv_scan;
    806 
    807     /**
    808      * Pointer frame level TU subblock coeff data
    809      */
    810     void *pv_pic_tu_coeff_data;
    811 
    812     /**
    813      * Pointer to TU subblock coeff data and number of subblocks and scan idx
    814      * Incremented each time a coded subblock is processed
    815      *
    816      */
    817     void *pv_parse_tu_coeff_data;
    818     void *pv_prev_mb_parse_tu_coeff_data;
    819 
    820     void *pv_proc_tu_coeff_data;
    821 
    822     WORD16 *pi2_coeff_data;
    823 
    824     cavlc_cntxt_t s_cavlc_ctxt;
    825 
    826     UWORD32 u4_n_leftY[2];
    827     UWORD32 u4_n_left_cr[2];
    828     UWORD32 u4_n_left_temp_y;
    829 
    830     UWORD8 pu1_left_nnz_y[4];
    831     UWORD8 pu1_left_nnz_uv[4];
    832     UWORD32 u4_n_left_temp_uv;
    833     /***************************************************************************/
    834     /*          Base pointer to all the cabac contexts                         */
    835     /***************************************************************************/
    836     bin_ctxt_model_t *p_cabac_ctxt_table_t;
    837 
    838     /***************************************************************************/
    839     /* cabac context pointers for every SE mapped into in p_cabac_ctxt_table_t */
    840     /***************************************************************************/
    841     bin_ctxt_model_t *p_mb_type_t;
    842     bin_ctxt_model_t *p_mb_skip_flag_t;
    843     bin_ctxt_model_t *p_sub_mb_type_t;
    844     bin_ctxt_model_t *p_mvd_x_t;
    845     bin_ctxt_model_t *p_mvd_y_t;
    846     bin_ctxt_model_t *p_ref_idx_t;
    847     bin_ctxt_model_t *p_mb_qp_delta_t;
    848     bin_ctxt_model_t *p_intra_chroma_pred_mode_t;
    849     bin_ctxt_model_t *p_prev_intra4x4_pred_mode_flag_t;
    850     bin_ctxt_model_t *p_rem_intra4x4_pred_mode_t;
    851     bin_ctxt_model_t *p_mb_field_dec_flag_t;
    852     bin_ctxt_model_t *p_cbp_luma_t;
    853     bin_ctxt_model_t *p_cbp_chroma_t;
    854     bin_ctxt_model_t *p_cbf_t[NUM_CTX_CAT];
    855     bin_ctxt_model_t *p_significant_coeff_flag_t[NUM_CTX_CAT];
    856     bin_ctxt_model_t *p_coeff_abs_level_minus1_t[NUM_CTX_CAT];
    857 
    858     UWORD32 u4_num_pmbair; /** MB pair number */
    859     mv_pred_t *ps_mv_left; /** Pointer to left motion vector bank */
    860     mv_pred_t *ps_mv_top_left; /** Pointer to top left motion vector bank */
    861     mv_pred_t *ps_mv_top_right; /** Pointer to top right motion vector bank */
    862 
    863     UWORD8 *pu1_left_yuv_dc_csbp;
    864 
    865 
    866     deblkmb_neighbour_t deblk_left_mb[2];
    867     deblkmb_neighbour_t *ps_deblk_top_mb;
    868     neighbouradd_t (*ps_left_mvpred_addr)[2]; /* Left MvPred Address Ping Pong*/
    869 
    870     /***************************************************************************/
    871     /*       Ref_idx contexts  are stored in the following way                 */
    872     /*  Array Idx 0,1 for reference indices in Forward direction               */
    873     /*  Array Idx 2,3 for reference indices in backward direction              */
    874     /***************************************************************************/
    875 
    876     /* Dimensions for u1_left_ref_ctxt_inc_arr is [2][4] for Mbaff:Top and Bot */
    877     WORD8 i1_left_ref_idx_ctx_inc_arr[2][4];
    878     WORD8 *pi1_left_ref_idx_ctxt_inc;
    879 
    880     /*************************************************************************/
    881     /*               Arrangnment of DC CSBP                                  */
    882     /*        bits:  b7  b6  b5  b4  b3  b2  b1  b0                          */
    883     /*        CSBP:   x   x   x   x   x  Vdc Udc Ydc                         */
    884     /*************************************************************************/
    885     /*************************************************************************/
    886     /*  Points either to u1_yuv_dc_csbp_topmb or  u1_yuv_dc_csbp_bot_mb     */
    887     /*************************************************************************/
    888     UWORD8 u1_yuv_dc_csbp_topmb;
    889     UWORD8 u1_yuv_dc_csbp_bot_mb;
    890 
    891     /* DMA SETUP */
    892     tfr_ctxt_t s_tran_addrecon_parse;
    893     tfr_ctxt_t s_tran_addrecon;
    894     tfr_ctxt_t s_tran_iprecon;
    895     tfr_ctxt_t *ps_frame_buf_ip_recon;
    896     WORD8 i1_recon_in_thread3_flag;
    897 
    898     /* slice Header Simplification */
    899     UWORD8 u1_pr_sl_type;
    900     WORD32 i4_frametype;
    901     UWORD32 u4_app_disp_width;
    902     WORD32 i4_error_code;
    903     UWORD32 u4_bitoffset;
    904 
    905     /* Variables added to handle field pics */
    906 
    907     UWORD8 u1_second_field;
    908     WORD32 i4_pic_type;
    909     WORD32 i4_content_type;
    910     WORD32 i4_decode_header;
    911     WORD32 i4_header_decoded;
    912     UWORD32 u4_total_frames_decoded;
    913 
    914     ctxt_inc_mb_info_t *ps_left_mb_ctxt_info; /* structure containing the left MB's
    915      context info, incase of Mbaff */
    916     pocstruct_t s_prev_pic_poc;
    917     pocstruct_t s_cur_pic_poc;
    918     WORD32 i4_cur_display_seq;
    919     WORD32 i4_prev_max_display_seq;
    920     WORD32 i4_max_poc;
    921     deblk_mb_t *ps_cur_deblk_mb;
    922 
    923     /* Pointers to local scratch buffers */
    924     deblk_mb_t *ps_deblk_pic;
    925 
    926     /* Pointers to Picture Buffers (Given by BufAPI Lib) */
    927     struct pic_buffer_t *ps_cur_pic; /** Pointer to Current picture buffer */
    928 
    929     /* Scratch Picture Buffers (Given by BufAPI Lib) */
    930     struct pic_buffer_t s_cur_pic;
    931 
    932     /* Current Slice related information */
    933     volatile UWORD16 u2_cur_slice_num;
    934     volatile UWORD16 u2_cur_slice_num_dec_thread;
    935 
    936     /* Variables needed for Buffer API handling */
    937     UWORD8 u1_nal_buf_id;
    938     UWORD8 u1_pic_buf_id;
    939     UWORD8 u1_pic_bufs;
    940 
    941     WORD16 *pi2_pred1; //[441];  /** Temp predictor buffer for MC */
    942     /* Pointer to refernce Pic buffers list, 0:fwd, 1:bwd */
    943     pic_buffer_t **ps_ref_pic_buf_lx[2];
    944     /* refIdx to POC mapping */
    945     void **ppv_map_ref_idx_to_poc;
    946     void **ppv_map_ref_idx_to_poc_base;
    947     UWORD32 *pu4_wts_ofsts_mat;
    948     UWORD32 *pu4_wt_ofsts;
    949     UWORD32 *pu4_mbaff_wt_mat;
    950     /* Function pointers to read Params common to CAVLC and CABAC */
    951     WORD32 (*pf_parse_inter_mb)(struct _DecStruct * ps_dec,
    952                                 dec_mb_info_t * ps_cur_mb_info,
    953                                 UWORD8 u1_mb_num,
    954                                 UWORD8 u1_num_mbsNby2);
    955     WORD32 (*pf_mvpred_ref_tfr_nby2mb)(struct _DecStruct * ps_dec,
    956                                      UWORD8 u1_num_mbs,
    957                                      UWORD8 u1_num_mbsNby2);
    958 
    959     WORD32 (*pf_parse_inter_slice)(struct _DecStruct * ps_dec,
    960                                    dec_slice_params_t * ps_slice,
    961                                    UWORD16 u2_first_mb_in_slice);
    962 
    963     UWORD32 (*pf_get_mb_info)(struct _DecStruct * ps_dec,
    964                               const UWORD16 u2_cur_mb_address,
    965                               dec_mb_info_t * ps_cur_mb_info,
    966                               UWORD32 u4_mbskip_run);
    967 
    968     /* Variables for Decode Buffer Management */
    969     dpb_manager_t *ps_dpb_mgr;
    970     dpb_commands_t *ps_dpb_cmds;
    971     dpb_commands_t s_dpb_cmds_scratch;
    972 
    973     /* Variables Required for N MB design */
    974     dec_mb_info_t *ps_nmb_info;
    975 
    976     UWORD8 *pu1_y_intra_pred_line;
    977     UWORD8 *pu1_u_intra_pred_line;
    978     UWORD8 *pu1_v_intra_pred_line;
    979 
    980     UWORD8 *pu1_cur_y_intra_pred_line;
    981     UWORD8 *pu1_cur_u_intra_pred_line;
    982     UWORD8 *pu1_cur_v_intra_pred_line;
    983 
    984     UWORD8 *pu1_cur_y_intra_pred_line_base;
    985     UWORD8 *pu1_cur_u_intra_pred_line_base;
    986     UWORD8 *pu1_cur_v_intra_pred_line_base;
    987 
    988     UWORD8 *pu1_prev_y_intra_pred_line;
    989     UWORD8 *pu1_prev_u_intra_pred_line;
    990     UWORD8 *pu1_prev_v_intra_pred_line;
    991 
    992     UWORD32 u4_intra_pred_line_ofst;
    993 
    994     UWORD8 u1_res_changed;
    995 
    996     mv_pred_t *ps_mv_cur; /** pointer to current motion vector bank */
    997     mv_pred_t *ps_mv_top; /** pointer to top motion vector bank */
    998     mv_pred_t *ps_mv_top_right2;/** Pointer to top right motion vector bank */
    999     mv_pred_t *ps_mv_p[2]; /** Scratch ping motion vector bank */
   1000     mv_pred_t *ps_mv_top_p[MV_SCRATCH_BUFS]; /** Scratch top pong motion vector bank */
   1001     UWORD8 u1_mv_top_p;
   1002 
   1003     deblk_mb_t *ps_deblk_mbn;
   1004 
   1005     UWORD8 *pu1_temp_mc_buffer;
   1006 
   1007     struct _sei *ps_sei;
   1008     UWORD8 u1_pic_struct_copy;
   1009     /* Variables required for cropping */
   1010     UWORD16 u2_disp_width;
   1011     UWORD16 u2_disp_height;
   1012     UWORD16 u2_crop_offset_y;
   1013     UWORD16 u2_crop_offset_uv;
   1014 
   1015     /* Variable required to get presentation time stamp through application */
   1016     UWORD32 u4_pts;
   1017 
   1018     /* Variables used for gaps in frame number */
   1019     UWORD16 u2_prev_ref_frame_num;
   1020 
   1021     UWORD8 u1_mb_idx;
   1022     struct pic_buffer_t *ps_col_pic;
   1023     void (*pf_parse_mvdirect)(struct _DecStruct*,
   1024                            struct pic_buffer_t*,
   1025                            directmv_t*,
   1026                            UWORD8,
   1027                            WORD32,
   1028                            dec_mb_info_t *);
   1029     void *pv_dec_out;
   1030     void *pv_dec_in;
   1031     void *pv_scratch_sps_pps; /*used temeporarily store sps/ spps while parsing*/
   1032 
   1033     /* state pointers to mb and partition information */
   1034     parse_pmbarams_t *ps_parse_mb_data;
   1035     parse_part_params_t *ps_parse_part_params;
   1036 
   1037     /* scratch pointers to mb and partition information */
   1038     parse_part_params_t *ps_part;
   1039 
   1040     UWORD8 u1_max_dec_frame_buffering;
   1041     pad_mgr_t s_pad_mgr;
   1042     UWORD8 (*pf_mvpred)(struct _DecStruct *ps_dec,
   1043                         struct _DecMbInfo *ps_cur_mb_info,
   1044                         mv_pred_t *ps_mv_pred,
   1045                         mv_pred_t *ps_mv_nmb,
   1046                         mv_pred_t *ps_mv_ntop,
   1047                         UWORD8 u1_sub_mb_num,
   1048                         UWORD8 uc_mb_part_width,
   1049                         UWORD8 uc_lxstart,
   1050                         UWORD8 uc_lxend,
   1051                         UWORD8 u1_mb_mc_mode);
   1052     void (*pf_compute_bs)(struct _DecStruct * ps_dec,
   1053                          struct _DecMbInfo * ps_cur_mb_info,
   1054                          const UWORD16 u2_mbxn_mb);
   1055     UWORD8 u1_init_dec_flag;
   1056     prev_seq_params_t s_prev_seq_params;
   1057     UWORD8 u1_cur_mb_fld_dec_flag; /* current Mb fld or Frm */
   1058 
   1059     UWORD8 u1_topleft_mb_fld;
   1060     UWORD8 u1_topleft_mbtype;
   1061     UWORD8 u1_topleft_mb_fld_bot;
   1062     UWORD8 u1_topleft_mbtype_bot;
   1063     WORD16 i2_prev_slice_mbx;
   1064     WORD16 i2_prev_slice_mby;
   1065     UWORD16 u2_top_left_mask;
   1066     UWORD16 u2_top_right_mask;
   1067     dec_err_status_t * ps_dec_err_status;
   1068     /* Ensure pi1_left_pred_mode is aligned to 4 byte boundary,
   1069     by declaring this after a pointer or an integer */
   1070     WORD8 pi1_left_pred_mode[8];
   1071 
   1072     UWORD8 u1_mb_idx_mv;
   1073     UWORD16 u2_mv_2mb[2];
   1074     UWORD32 u4_skip_frm_mask;
   1075 
   1076     /* variable for finding the no.of mbs decoded in the current picture */
   1077     UWORD16 u2_total_mbs_coded;
   1078     /* member added for supporting fragmented annex - B */
   1079 //  frg_annex_read_t s_frag_annex_read;
   1080     /* added for vui_t, sei support*/
   1081     WORD32 i4_vui_frame_rate;
   1082     /* To Store the value of ref_idx_active for previous slice */
   1083     /* useful in error handling                                */
   1084     UWORD8 u1_num_ref_idx_lx_active_prev;
   1085     /* Flag added to come out of process call in annex-b if&if frame is decoded */
   1086     /* presence of access unit delimters and pps and sps                        */
   1087     UWORD8 u1_frame_decoded_flag;
   1088 
   1089     /* To keep track of whether the last picture was decoded or not */
   1090     /* in case of skip mode set by the application                  */
   1091     UWORD8 u1_last_pic_not_decoded;
   1092 
   1093     WORD32 e_dec_status;
   1094     UWORD32 u4_num_fld_in_frm;
   1095 
   1096     /* Function pointer for 4x4 residual cavlc parsing based on total coeff */
   1097     WORD32 (*pf_cavlc_4x4res_block[3])(UWORD32 u4_isdc,
   1098                                     UWORD32 u4_total_coeff_trail_one, /**TotalCoefficients<<16+trailingones*/
   1099                                     dec_bit_stream_t *ps_bitstrm);
   1100 
   1101     /* Function pointer array for interpolate functions in called from motion compensattion module */
   1102     void (*p_mc_interpolate_x_y[16][3])(UWORD8*,
   1103                                         UWORD8*,
   1104                                         UWORD8*,
   1105                                         UWORD8,
   1106                                         UWORD16,
   1107                                         UWORD16,
   1108                                         UWORD8);
   1109 
   1110     /**************************************************************************/
   1111     /* Function pointer for 4x4 totalcoeff, trlone and residual cavlc parsing */
   1112     /* based on u4_n (neigbourinng nnz average)                               */
   1113     /* These point to two functions depending on (u4_n > 7) and (u4_n <= 7)   */
   1114     /**************************************************************************/
   1115     WORD32 (*pf_cavlc_parse4x4coeff[2])(WORD16 *pi2_coeff_block,
   1116                                         UWORD32 u4_isdc, /* is it a DC block */
   1117                                         WORD32 u4_n,
   1118                                         struct _DecStruct *ps_dec, /** Decoder Parameters */
   1119                                         UWORD32 *pu4_total_coeff);
   1120 
   1121     /**************************************************************************/
   1122     /* Function pointer for luma 8x8block cavlc parsing based on top and left */
   1123     /* neigbour availability.                                                 */
   1124     /**************************************************************************/
   1125     WORD32 (*pf_cavlc_parse_8x8block[4])(WORD16 *pi2_coeff_block,
   1126                                          UWORD32 u4_sub_block_strd,
   1127                                          UWORD32 u4_isdc,
   1128                                          struct _DecStruct *ps_dec,
   1129                                          UWORD8 *pu1_top_nnz,
   1130                                          UWORD8 *pu1_left_nnz,
   1131                                          UWORD8 u1_tran_form8x8,
   1132                                          UWORD8 u1_mb_field_decodingflag,
   1133                                          UWORD32 *pu4_csbp);
   1134 
   1135     /**************************************************************************/
   1136     /* Ping pong top and current rows of mb neigbour_params                   */
   1137     /**************************************************************************/
   1138     mb_neigbour_params_t *ps_nbr_mb_row;
   1139     mb_neigbour_params_t *ps_cur_mb_row;
   1140     mb_neigbour_params_t *ps_top_mb_row;
   1141 
   1142     /**************************************************************************/
   1143     /* Function pointer for 16x16 and non16x16 Bs1 calculations depending on   */
   1144     /* P and B slice.                                                          */
   1145     /***************************************************************************/
   1146     void (*pf_fill_bs1[2][2])(mv_pred_t *ps_cur_mv_pred,
   1147                               mv_pred_t *ps_top_mv_pred,
   1148                               void **ppv_map_ref_idx_to_poc,
   1149                               UWORD32 *pu4_bs_table, /* pointer to the BsTable array */
   1150                               mv_pred_t *ps_leftmost_mv_pred,
   1151                               neighbouradd_t *ps_left_addr,
   1152                               void **u4_pic_addrress,
   1153                               WORD32 i4_ver_mvlimit);
   1154 
   1155     void (*pf_fill_bs_xtra_left_edge[2])(UWORD32 *pu4_bs, /* Base pointer of BS table */
   1156                                          WORD32 u4_left_mb_t_csbp, /* left mbpair's top csbp   */
   1157                                          WORD32 u4_left_mb_b_csbp, /* left mbpair's bottom csbp*/
   1158                                          WORD32 u4_cur_mb_csbp, /* csbp of current mb */
   1159                                          UWORD32 u4_cur_mb_bot /* is top or bottom mb */
   1160 
   1161                                          );
   1162     /* Function pointer array for BP and MP functions for MC*/
   1163     void (*p_motion_compensate)(struct _DecStruct * ps_dec,
   1164                                dec_mb_info_t *ps_cur_mb_info);
   1165 
   1166 
   1167     void (*p_mc_dec_thread)(struct _DecStruct * ps_dec, dec_mb_info_t *ps_cur_mb_info);
   1168 
   1169     /* Function pointer array for BP and MP functions for formMbPartInfo*/
   1170 
   1171     WORD32 (*p_form_mb_part_info)(pred_info_pkd_t *ps_pred_pkd,
   1172                                 struct _DecStruct * ps_dec,
   1173                                      UWORD16 u2_mb_x,
   1174                                      UWORD16 u2_mb_y,
   1175                                      WORD32 mb_index,
   1176                                      dec_mb_info_t *ps_cur_mb_info);
   1177 
   1178     WORD32 (*p_form_mb_part_info_thread)(pred_info_pkd_t *ps_pred_pkd,
   1179                                 struct _DecStruct * ps_dec,
   1180                                      UWORD16 u2_mb_x,
   1181                                      UWORD16 u2_mb_y,
   1182                                      WORD32 mb_index,
   1183                                      dec_mb_info_t *ps_cur_mb_info);
   1184 
   1185 
   1186     /* Required for cabac mbaff bottom mb */
   1187     UWORD32 u4_next_mb_skip;
   1188 
   1189     void (*p_DeblockPicture[2])(struct _DecStruct *);
   1190 
   1191     /* ! */
   1192     UWORD32 u4_ts;
   1193     UWORD8 u1_flushfrm;
   1194 
   1195     /* Output format sent by the application */
   1196     UWORD8 u1_chroma_format;
   1197     UWORD8 u1_pic_decode_done;
   1198     UWORD8 u1_slice_header_done;
   1199     WORD32 init_done;
   1200 
   1201     /******************************************/
   1202     /* For the high profile related variables */
   1203     /******************************************/
   1204     high_profile_tools_t s_high_profile;
   1205     /* CBCR */
   1206     UWORD8 u1_qp_v_div6;
   1207     UWORD8 u1_qp_v_rem6;
   1208     /*
   1209      * TO help solve the dangling field case.
   1210      * Check for the previous frame number and the current frame number.
   1211      */
   1212     UWORD16 u2_prv_frame_num;
   1213     UWORD8 u1_top_bottom_decoded;
   1214     UWORD8 u1_dangling_field;
   1215 
   1216     IVD_DISPLAY_FRAME_OUT_MODE_T                e_frm_out_mode;
   1217 
   1218     UWORD8 *pu1_bits_buf_static;
   1219     UWORD8 *pu1_bits_buf_dynamic;
   1220 
   1221     UWORD32 u4_static_bits_buf_size;
   1222     UWORD32 u4_dynamic_bits_buf_size;
   1223 
   1224     UWORD32 u4_num_disp_bufs_requested;
   1225     WORD32 i4_display_delay;
   1226     UWORD32 u4_slice_start_code_found;
   1227 
   1228     UWORD32 u4_nmb_deblk;
   1229     UWORD32 u4_use_intrapred_line_copy;
   1230     UWORD32 u4_num_mbs_prev_nmb;
   1231     UWORD32 u4_num_mbs_cur_nmb;
   1232     UWORD32 u4_app_deblk_disable_level;
   1233     UWORD32 u4_app_disable_deblk_frm;
   1234     WORD32 i4_mv_frac_mask;
   1235 
   1236     disp_buf_t disp_bufs[MAX_DISP_BUFS_NEW];
   1237     UWORD32 u4_disp_buf_mapping[MAX_DISP_BUFS_NEW];
   1238     UWORD32 u4_disp_buf_to_be_freed[MAX_DISP_BUFS_NEW];
   1239     UWORD32 u4_share_disp_buf;
   1240     UWORD32 u4_num_disp_bufs;
   1241 
   1242     UWORD32 u4_bs_deblk_thread_created;
   1243     volatile UWORD32 u4_start_recon_deblk;
   1244     void *pv_bs_deblk_thread_handle;
   1245 
   1246     UWORD32 u4_cur_bs_mb_num;
   1247     UWORD32 u4_bs_cur_slice_num_mbs;
   1248     UWORD32 u4_cur_deblk_mb_num;
   1249     UWORD32 u4_sps_cnt_in_process;
   1250     volatile UWORD16 u2_cur_slice_num_bs;
   1251 
   1252     UWORD32 u4_deblk_mb_x;
   1253     UWORD32 u4_deblk_mb_y;
   1254 
   1255 
   1256 
   1257     iv_yuv_buf_t s_disp_frame_info;
   1258     UWORD32 u4_fmt_conv_num_rows;
   1259     UWORD32 u4_fmt_conv_cur_row;
   1260     ivd_out_bufdesc_t *ps_out_buffer;
   1261     ivd_get_display_frame_op_t s_disp_op;
   1262     UWORD32 u4_output_present;
   1263 
   1264     volatile UWORD16 cur_dec_mb_num;
   1265     volatile UWORD16 cur_recon_mb_num;
   1266     volatile UWORD16 u2_cur_mb_addr;
   1267     WORD16 i2_dec_thread_mb_y;
   1268     WORD16 i2_recon_thread_mb_y;
   1269 
   1270     UWORD8 u1_separate_parse;
   1271     UWORD32 u4_dec_thread_created;
   1272     void *pv_dec_thread_handle;
   1273     volatile UWORD8 *pu1_dec_mb_map;
   1274     volatile UWORD8 *pu1_recon_mb_map;
   1275     volatile UWORD16 *pu2_slice_num_map;
   1276     dec_slice_struct_t *ps_dec_slice_buf;
   1277     void *pv_map_ref_idx_to_poc_buf;
   1278     dec_mb_info_t *ps_frm_mb_info;
   1279     volatile dec_slice_struct_t * volatile ps_parse_cur_slice;
   1280     volatile dec_slice_struct_t * volatile ps_decode_cur_slice;
   1281     volatile dec_slice_struct_t * volatile ps_computebs_cur_slice;
   1282     UWORD32 u4_cur_slice_decode_done;
   1283     UWORD32 u4_extra_mem_used;
   1284 
   1285     /* 2 first slice not parsed , 1 :first slice parsed , 0 :first valid slice header parsed*/
   1286     UWORD32 u4_first_slice_in_pic;
   1287     UWORD32 u4_num_cores;
   1288     IVD_ARCH_T e_processor_arch;
   1289     IVD_SOC_T e_processor_soc;
   1290 
   1291     /**
   1292      * Pictures that are are degraded
   1293      * 0 : No degrade
   1294      * 1 : Only on non-reference frames
   1295      * 2 : Use interval specified by u4_nondegrade_interval
   1296      * 3 : All non-key frames
   1297      * 4 : All frames
   1298      */
   1299     WORD32 i4_degrade_pics;
   1300 
   1301     /**
   1302      * Interval for pictures which are completely decoded without any degradation
   1303      */
   1304     WORD32 i4_nondegrade_interval;
   1305 
   1306     /**
   1307      * bit position (lsb is zero): Type of degradation
   1308      * 1 : Disable deblocking
   1309      * 2 : Faster inter prediction filters
   1310      * 3 : Fastest inter prediction filters
   1311      */
   1312     WORD32 i4_degrade_type;
   1313 
   1314     /** Degrade pic count, Used to maintain the interval between non-degraded pics
   1315      *
   1316      */
   1317     WORD32 i4_degrade_pic_cnt;
   1318 
   1319     UWORD32 u4_pic_buf_got;
   1320 
   1321     /**
   1322      * Col flag and mv pred buffer manager
   1323      */
   1324     void *pv_mv_buf_mgr;
   1325 
   1326     /**
   1327      * Picture buffer manager
   1328      */
   1329     void *pv_pic_buf_mgr;
   1330 
   1331     /**
   1332      * Display buffer manager
   1333      */
   1334     void *pv_disp_buf_mgr;
   1335 
   1336     void *apv_buf_id_pic_buf_map[MAX_DISP_BUFS_NEW];
   1337 
   1338     UWORD8 au1_pic_buf_id_mv_buf_id_map[MAX_DISP_BUFS_NEW];
   1339 
   1340     UWORD8 au1_pic_buf_ref_flag[MAX_DISP_BUFS_NEW];
   1341 
   1342     struct pic_buffer_t *ps_pic_buf_base;
   1343 
   1344     UWORD8 *pu1_ref_buff_base;
   1345     col_mv_buf_t *ps_col_mv_base;
   1346     void *(*pf_aligned_alloc)(void *pv_mem_ctxt, WORD32 alignment, WORD32 size);
   1347     void (*pf_aligned_free)(void *pv_mem_ctxt, void *pv_buf);
   1348     void *pv_mem_ctxt;
   1349 
   1350     UWORD8 *pu1_pic_buf_base;
   1351     UWORD8 *pu1_mv_bank_buf_base;
   1352     UWORD8 *pu1_init_dpb_base;
   1353 
   1354     ih264_default_weighted_pred_ft *pf_default_weighted_pred_luma;
   1355 
   1356     ih264_default_weighted_pred_ft *pf_default_weighted_pred_chroma;
   1357 
   1358     ih264_weighted_pred_ft *pf_weighted_pred_luma;
   1359 
   1360     ih264_weighted_pred_ft *pf_weighted_pred_chroma;
   1361 
   1362     ih264_weighted_bi_pred_ft *pf_weighted_bi_pred_luma;
   1363 
   1364     ih264_weighted_bi_pred_ft *pf_weighted_bi_pred_chroma;
   1365 
   1366     ih264_pad *pf_pad_top;
   1367     ih264_pad *pf_pad_bottom;
   1368     ih264_pad *pf_pad_left_luma;
   1369     ih264_pad *pf_pad_left_chroma;
   1370     ih264_pad *pf_pad_right_luma;
   1371     ih264_pad *pf_pad_right_chroma;
   1372 
   1373     ih264_inter_pred_chroma_ft *pf_inter_pred_chroma;
   1374 
   1375     ih264_inter_pred_luma_ft *apf_inter_pred_luma[16];
   1376 
   1377     ih264_intra_pred_luma_ft *apf_intra_pred_luma_16x16[4];
   1378 
   1379     ih264_intra_pred_luma_ft *apf_intra_pred_luma_8x8[9];
   1380 
   1381     ih264_intra_pred_luma_ft *apf_intra_pred_luma_4x4[9];
   1382 
   1383     ih264_intra_pred_ref_filtering_ft *pf_intra_pred_ref_filtering;
   1384 
   1385     ih264_intra_pred_chroma_ft *apf_intra_pred_chroma[4];
   1386 
   1387     ih264_iquant_itrans_recon_ft *pf_iquant_itrans_recon_luma_4x4;
   1388 
   1389     ih264_iquant_itrans_recon_ft *pf_iquant_itrans_recon_luma_4x4_dc;
   1390 
   1391     ih264_iquant_itrans_recon_ft *pf_iquant_itrans_recon_luma_8x8;
   1392 
   1393     ih264_iquant_itrans_recon_ft *pf_iquant_itrans_recon_luma_8x8_dc;
   1394 
   1395     ih264_iquant_itrans_recon_chroma_ft *pf_iquant_itrans_recon_chroma_4x4;
   1396 
   1397     ih264_iquant_itrans_recon_chroma_ft *pf_iquant_itrans_recon_chroma_4x4_dc;
   1398 
   1399     ih264_ihadamard_scaling_ft *pf_ihadamard_scaling_4x4;
   1400 
   1401     /**
   1402      * deblock vertical luma edge with blocking strength 4
   1403      */
   1404     ih264_deblk_edge_bs4_ft *pf_deblk_luma_vert_bs4;
   1405 
   1406     /**
   1407      * deblock vertical luma edge with blocking strength less than 4
   1408      */
   1409     ih264_deblk_edge_bslt4_ft *pf_deblk_luma_vert_bslt4;
   1410 
   1411     /**
   1412      * deblock vertical luma edge with blocking strength 4 for mbaff
   1413      */
   1414     ih264_deblk_edge_bs4_ft *pf_deblk_luma_vert_bs4_mbaff;
   1415 
   1416     /**
   1417      * deblock vertical luma edge with blocking strength less than 4 for mbaff
   1418      */
   1419     ih264_deblk_edge_bslt4_ft *pf_deblk_luma_vert_bslt4_mbaff;
   1420 
   1421     /**
   1422      * deblock vertical chroma edge with blocking strength 4
   1423      */
   1424     ih264_deblk_chroma_edge_bs4_ft *pf_deblk_chroma_vert_bs4;
   1425 
   1426     /**
   1427      * deblock vertical chroma edge with blocking strength less than 4
   1428      */
   1429     ih264_deblk_chroma_edge_bslt4_ft *pf_deblk_chroma_vert_bslt4;
   1430 
   1431     /**
   1432      * deblock vertical chroma edge with blocking strength 4 for mbaff
   1433      */
   1434     ih264_deblk_chroma_edge_bs4_ft *pf_deblk_chroma_vert_bs4_mbaff;
   1435 
   1436     /**
   1437      * deblock vertical chroma edge with blocking strength less than 4 for mbaff
   1438      */
   1439     ih264_deblk_chroma_edge_bslt4_ft *pf_deblk_chroma_vert_bslt4_mbaff;
   1440 
   1441     /**
   1442      * deblock horizontal luma edge with blocking strength 4
   1443      */
   1444     ih264_deblk_edge_bs4_ft *pf_deblk_luma_horz_bs4;
   1445 
   1446     /**
   1447      * deblock horizontal luma edge with blocking strength less than 4
   1448      */
   1449     ih264_deblk_edge_bslt4_ft *pf_deblk_luma_horz_bslt4;
   1450 
   1451     /**
   1452      * deblock horizontal chroma edge with blocking strength 4
   1453      */
   1454     ih264_deblk_chroma_edge_bs4_ft *pf_deblk_chroma_horz_bs4;
   1455 
   1456     /**
   1457      * deblock horizontal chroma edge with blocking strength less than 4
   1458      */
   1459     ih264_deblk_chroma_edge_bslt4_ft *pf_deblk_chroma_horz_bslt4;
   1460 
   1461 
   1462 } dec_struct_t;
   1463 
   1464 #endif /* _H264_DEC_STRUCTS_H */
   1465