/******************************************************************************

 *

 * Copyright (C) 2022 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at:

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 *****************************************************************************

 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore

 */

/**

 *******************************************************************************

 * @file

 *  isvcd_parse_ebslice.c

 *

 * @brief

 *  Contains routines that decode a I slice type

 *

 * @author

 *  Kishore

 *

 * @par List of Functions:

 *  - isvcd_parse_bmb_cabac()

 *  - isvcd_mv_pred_ref_tfr_nby2_ebmb()

 *  - isvcd_parse_bmb_cavlc()

 *  - isvcd_parse_bmb_non_direct_cabac()

 *  - isvcd_parse_bmb_non_direct_cavlc()

 *  - isvcd_parse_ebslice()

 *  - isvcd_parse_bslice()

 *

 * @remarks

 *  None

 *

 *******************************************************************************

 */

#include <assert.h>

#include <string.h>

#include "ih264_defs.h"

#include "ih264d_bitstrm.h"

#include "ih264d_defs.h"

#include "ih264d_debug.h"

#include "ih264d_tables.h"

#include "isvcd_structs.h"

#include "ih264d_parse_cavlc.h"

#include "ih264d_mb_utils.h"

#include "ih264d_parse_slice.h"

#include "ih264d_process_intra_mb.h"

#include "ih264d_mvpred.h"

#include "ih264d_parse_islice.h"

#include "ih264d_inter_pred.h"

#include "ih264d_process_pslice.h"

#include "isvcd_process_epslice.h"

#include "ih264d_process_bslice.h"

#include "ih264d_deblocking.h"

#include "ih264d_cabac.h"

#include "ih264d_parse_mb_header.h"

#include "ih264d_error_handler.h"

#include "ih264d_mvpred.h"

#include "ih264d_cabac.h"

#include "ih264d_utils.h"

#include "ih264d_parse_headers.h"

#include "isvcd_parse_headers.h"

#include "isvcd_process_ebslice.h"

#include "isvcd_parse_slice.h"

#include "ih264_debug.h"

#include "isvcd_parse_cavlc.h"

#include "isvcd_mb_utils.h"

void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);

void isvcd_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);

void ih264d_get_implicit_weights(dec_struct_t *ps_dec);

WORD32 isvcd_interlyr_motion_mode_pred(svc_dec_lyr_struct_t *ps_svc_lyr_dec,

                                       dec_mb_info_t *ps_cur_mb_info,

                                       dec_svc_mb_info_t *ps_svc_cur_mb_info,

                                       parse_pmbarams_t *ps_mb_part_info,

                                       parse_part_params_t *ps_part);

/*!

 **************************************************************************

 * \if Function name : isvcd_parse_bmb_cabac \endif

 *

 * \brief

 *    This function parses CABAC syntax of a B MB.

 *

 * \return

 *    0 on Success and Error code otherwise

 **************************************************************************

 */

WORD32 isvcd_parse_bmb_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,

                             dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD32 u4_mb_num,

                             UWORD32 u4_num_mbsNby2)

{

    UWORD8 u1_cbp = 0;

    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;

    deblk_mb_t *ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u4_mb_num;

    const UWORD8 *puc_mb_mc_mode = (const UWORD8 *) gau1_ih264d_mb_mc_mode;

    UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;

    ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;

    dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;

    decoding_envirnoment_t *ps_cab_env = &ps_dec->s_cab_dec_env;

    WORD32 ret;

    UWORD8 u1_Bdirect_tranform_read = 1;

    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;

    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1;

    ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type];

    ps_cur_mb_info->u1_yuv_dc_block_flag = 0;

    ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE;

    if(u1_mb_type != B_DIRECT)

    {

        ret = isvcd_parse_bmb_non_direct_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,

                                               u4_mb_num, u4_num_mbsNby2);

        if(ret != OK) return ret;

    }

    else

    {

        /************ STORING PARTITION INFO ***********/

        parse_part_params_t *ps_part_info;

        ps_part_info = ps_dec->ps_part;

        ps_part_info->u1_is_direct = PART_DIRECT_16x16;

        ps_part_info->u1_sub_mb_num = 0;

        ps_dec->ps_part++;

        p_curr_ctxt->u1_mb_type = CAB_BD16x16;

        MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);

        memset(ps_dec->pi1_left_ref_idx_ctxt_inc, 0, 4);

        MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0);

        memset(p_curr_ctxt->i1_ref_idx, 0, 4);

        /* check whether transform8x8 u4_flag to be read or not */

        u1_Bdirect_tranform_read = ps_dec->s_high_profile.u1_direct_8x8_inference_flag;

    }

    if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag &&

       ps_svc_cur_mb_info->u1_crop_window_flag)

    {

        ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_decode_bin(

            1, ps_svc_lyr_dec->ps_residual_prediction_flag, ps_bitstrm, ps_cab_env);

        COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag",

                       ps_svc_cur_mb_info->u1_residual_prediction_flag);

    }

    else

    {

        /*residual flag inference code */

        if(1 == ps_svc_cur_mb_info->u1_crop_window_flag &&

           1 == ps_svc_cur_mb_info->u1_base_mode_flag)

        {

            ps_svc_cur_mb_info->u1_residual_prediction_flag =

                ps_svc_slice_params->u1_default_residual_prediction_flag;

        }

        else

        {

            ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;

        }

    }

    if(ps_svc_slice_params->u1_scan_idx_end >= ps_svc_slice_params->u1_scan_idx_start)

    {

        /* Read the Coded block pattern */

        u1_cbp = (WORD8) ih264d_parse_ctx_cbp_cabac(ps_dec);

        p_curr_ctxt->u1_cbp = u1_cbp;

        ps_cur_mb_info->u1_cbp = u1_cbp;

        if(u1_cbp > 47) return ERROR_CBP;

        COPYTHECONTEXT("coded_block_pattern", u1_cbp);

        ps_cur_mb_info->u1_tran_form8x8 = 0;

        ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;

        if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & (0xf)) &&

           (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) && (u1_Bdirect_tranform_read))

        {

            ps_cur_mb_info->u1_tran_form8x8 =

                ih264d_parse_transform8x8flag_cabac(ps_dec, ps_cur_mb_info);

            COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);

            ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;

            p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;

        }

        else

        {

            p_curr_ctxt->u1_transform8x8_ctxt = 0;

        }

    }

    p_curr_ctxt->u1_intra_chroma_pred_mode = 0;

    p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;

    ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;

    /* Read mb_qp_delta */

    if(u1_cbp)

    {

        WORD8 c_temp;

        ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &c_temp);

        if(ret != OK) return ret;

        COPYTHECONTEXT("mb_qp_delta", c_temp);

        if(c_temp)

        {

            ret = ih264d_update_qp(ps_dec, c_temp);

            if(ret != OK) return ret;

        }

    }

    else

        ps_dec->i1_prev_mb_qp_delta = 0;

    /*RESIDUAL FOR Start to end idx*/

    ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, 0);

    if(EXCEED_OFFSET(ps_dec->ps_bitstrm)) return ERROR_EOB_TERMINATE_T;

    return OK;

}

/*!

 **************************************************************************

 * \if Function name : isvcd_mv_pred_ref_tfr_nby2_ebmb \endif

 *

 * \brief

 *    This function computes the mv pred for b frame

 *

 * \return

 *    0 on Success and Error code otherwise

 **************************************************************************

 */

WORD32 isvcd_mv_pred_ref_tfr_nby2_ebmb(dec_struct_t *ps_dec, UWORD32 u4_mb_idx, UWORD32 u4_num_mbs)

{

    svc_dec_lyr_struct_t *ps_svc_lyr_dec = (svc_dec_lyr_struct_t *) ps_dec;

    parse_pmbarams_t *ps_mb_part_info;

    parse_part_params_t *ps_part;

    mv_pred_t *ps_mv_nmb, *ps_mv_nmb_start, *ps_mv_ntop, *ps_mv_ntop_start;

    pic_buffer_t *ps_ref_frame;

    UWORD8 u1_direct_mode_width;

    UWORD8 i, j;

    dec_mb_info_t *ps_cur_mb_info;

    dec_svc_mb_info_t *ps_svc_cur_mb_info;

    const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;

    UWORD8 u1_field;

    WORD32 ret = 0;

    WORD16 i2_mv_x, i2_mv_y;

    ps_dec->i4_submb_ofst -= (u4_num_mbs - u4_mb_idx) << 4;

    ps_mb_part_info = ps_dec->ps_parse_mb_data;

    ps_part = ps_dec->ps_parse_part_params;

    /* N/2 Mb MvPred and Transfer Setup Loop */

    for(i = u4_mb_idx; i < u4_num_mbs; i++, ps_mb_part_info++)

    {

        UWORD8 u1_colz = 0;

        ps_dec->i4_submb_ofst += SUB_BLK_SIZE;

        /* Restore the slice scratch MbX and MbY context */

        ps_cur_mb_info = ps_dec->ps_nmb_info + i;

        ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + i;

        u1_field = ps_cur_mb_info->u1_mb_field_decodingflag;

        ps_mv_nmb_start = ps_dec->ps_mv_cur + (i << 4);

        ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx;

        ps_dec->u2_mby = ps_cur_mb_info->u2_mby;

        ps_dec->u1_currB_type = 0;

        ps_dec->u2_mv_2mb[i & 0x1] = 0;

        /* Look for MV Prediction and Reference Transfer in Non-I Mbs */

        if(!ps_mb_part_info->u4_isI_mb)

        {

            UWORD8 u1_blk_no;

            WORD16 i1_ref_idx, i1_ref_idx1;

            UWORD8 u1_pred_mode;

            UWORD8 u1_sub_mb_x, u1_sub_mb_y, u1_sub_mb_num;

            UWORD8 u1_lx, u1_lx_start, u1_lxend, u1_tmp_lx;

            UWORD8 u1_num_part, u1_num_ref, u1_wd, u1_ht;

            UWORD32 *pu4_wt_offst;

            UWORD8 u1_scale_ref, u4_bot_mb;

            deblk_mb_t *ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + i;

            WORD8(*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_mb_part_info->i1_ref_idx;

            WORD8 *pi1_ref_idx0 = pi1_ref_idx[0], *pi1_ref_idx1 = pi1_ref_idx[1];

            UWORD32 **ppu4_wt_ofst = ps_mb_part_info->pu4_wt_offst;

            WORD32 i4_mb_mode_svc;

            UWORD8 u1_motion_pred_flag_l0 = ps_svc_cur_mb_info->au1_motion_pred_flag[0];

            UWORD8 u1_motion_pred_flag_l1 = ps_svc_cur_mb_info->au1_motion_pred_flag[1];

            /* MB Level initialisations */

            ps_dec->u4_num_pmbair = i >> u1_mbaff;

            ps_dec->u4_mb_idx_mv = i;

            i4_mb_mode_svc = isvcd_interlyr_motion_mode_pred(

                ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, ps_mb_part_info, ps_part);

            if((-1 == i4_mb_mode_svc) || (SVC_INTER_MB == i4_mb_mode_svc))

            {

                ps_mv_ntop_start =

                    ps_mv_nmb_start - (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12;

                u1_num_part = ps_mb_part_info->u1_num_part;

                ps_cur_deblk_mb->u1_mb_type |= (u1_num_part > 1) << 1;

                u1_direct_mode_width = (1 == ps_mb_part_info->u1_num_part) ? 16 : 8;

                ps_cur_mb_info->u4_pred_info_pkd_idx = ps_dec->u4_pred_info_pkd_idx;

                ps_cur_mb_info->u1_num_pred_parts = 0;

                /****************************************************/

                /* weighted u4_ofst pointer calculations, this loop  */

                /* runs maximum 4 times, even in direct cases       */

                /****************************************************/

                u1_scale_ref = u1_mbaff & ps_cur_mb_info->u1_mb_field_decodingflag;

                u4_bot_mb = 1 - ps_cur_mb_info->u1_topmb;

                if(ps_dec->ps_cur_pps->u1_wted_bipred_idc)

                {

                    u1_num_ref = MIN(u1_num_part, 4);

                    if(PART_DIRECT_16x16 != ps_part->u1_is_direct)

                    {

                        for(u1_blk_no = 0; u1_blk_no < u1_num_ref; u1_blk_no++)

                        {

                            i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0);

                            if(u1_scale_ref) i1_ref_idx >>= 1;

                            i1_ref_idx *= ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];

                            if(u1_scale_ref)

                                i1_ref_idx += (MAX(pi1_ref_idx1[u1_blk_no], 0) >> 1);

                            else

                                i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0);

                            pu4_wt_offst = (UWORD32 *) &ps_dec->pu4_wt_ofsts[2 * X3(i1_ref_idx)];

                            if(pi1_ref_idx0[u1_blk_no] < 0) pu4_wt_offst += 1;

                            ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;

                            if(u1_scale_ref && (ps_dec->ps_cur_pps->u1_wted_bipred_idc == 2))

                            {

                                i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0);

                                i1_ref_idx *=

                                    (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] << 1);

                                i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0);

                                if(u4_bot_mb)

                                {

                                    i1_ref_idx +=

                                        (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] << 1) *

                                        (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] << 1);

                                }

                                pu4_wt_offst =

                                    (UWORD32 *) &ps_dec->pu4_mbaff_wt_mat[2 * X3(i1_ref_idx)];

                                ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;

                            }

                        }

                    }

                }

                /**************************************************/

                /* Loop on Partitions                             */

                /* direct mode is reflected as a single partition */

                /**************************************************/

                for(j = 0; j < u1_num_part; j++, ps_part++)

                {

                    u1_sub_mb_num = ps_part->u1_sub_mb_num;

                    ps_dec->u1_sub_mb_num = u1_sub_mb_num;

                    if(PART_NOT_DIRECT != ps_part->u1_is_direct)

                    {

                        /**************************************************/

                        /* Direct Mode, Call DecodeSpatial/TemporalDirect */

                        /* only (those will in turn call FormMbPartInfo)  */

                        /**************************************************/

                        ret = isvcd_decode_spatial_direct(ps_dec, u1_direct_mode_width,

                                                          ps_cur_mb_info, i);

                        if(ret != OK) return ret;

                        ps_cur_deblk_mb->u1_mb_type |= (ps_dec->u1_currB_type << 1);

                    }

                    else

                    {

                        mv_pred_t s_mvPred = {0};

                        /**************************************************/

                        /* Non Direct Mode, Call Motion Vector Predictor  */

                        /* and FormMbpartInfo                             */

                        /**************************************************/

                        u1_sub_mb_x = u1_sub_mb_num & 0x03;

                        u1_sub_mb_y = u1_sub_mb_num >> 2;

                        u1_blk_no = (u1_num_part < 4)

                                        ? j

                                        : (((u1_sub_mb_y >> 1) << 1) + (u1_sub_mb_x >> 1));

                        ps_mv_ntop = ps_mv_ntop_start + u1_sub_mb_x;

                        ps_mv_nmb = ps_mv_nmb_start + u1_sub_mb_num;

                        /* Populate the colpic info and reference frames */

                        s_mvPred.i1_ref_frame[0] = pi1_ref_idx0[u1_blk_no];

                        s_mvPred.i1_ref_frame[1] = pi1_ref_idx1[u1_blk_no];

                        u1_pred_mode = ps_part->u1_pred_mode;

                        u1_wd = ps_part->u1_partwidth;

                        u1_ht = ps_part->u1_partheight;

                        if(1 != ps_svc_cur_mb_info->u1_base_mode_flag)

                        {

                            u1_lx_start = 0;

                            u1_lxend = 2;

                            if(PRED_L0 == u1_pred_mode)

                            {

                                s_mvPred.i2_mv[2] = 0;

                                s_mvPred.i2_mv[3] = 0;

                                if(0 == (u1_motion_pred_flag_l0 & (1 << u1_blk_no)))

                                {

                                    u1_lxend = 1;

                                }

                                else

                                {

                                    u1_lxend = 0;

                                }

                            }

                            else if(PRED_L1 == u1_pred_mode)

                            {

                                s_mvPred.i2_mv[0] = 0;

                                s_mvPred.i2_mv[1] = 0;

                                if(0 == (u1_motion_pred_flag_l1 & (1 << u1_blk_no)))

                                {

                                    u1_lx_start = 1;

                                }

                                else

                                {

                                    u1_lx_start = 2;

                                }

                            }

                            else  // Bi Pred

                            {

                                if(0 == (u1_motion_pred_flag_l0 & (1 << u1_blk_no)))

                                {

                                    u1_lxend = 1;

                                }

                                if(0 == (u1_motion_pred_flag_l1 & (1 << u1_blk_no)))

                                {

                                    u1_lx_start = 1;

                                }

                                if((0 != (u1_motion_pred_flag_l0 & (1 << u1_blk_no))) &&

                                   (0 != (u1_motion_pred_flag_l1 & (1 << u1_blk_no))))

                                {

                                    u1_lx_start = 0;

                                    u1_lxend = 0;

                                }

                                if((0 == (u1_motion_pred_flag_l0 & (1 << u1_blk_no))) &&

                                   (0 == (u1_motion_pred_flag_l1 & (1 << u1_blk_no))))

                                {

                                    u1_lx_start = 0;

                                    u1_lxend = 2;

                                }

                            }

                            ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb, ps_mv_ntop,

                                              &s_mvPred, u1_sub_mb_num, u1_wd, u1_lx_start,

                                              u1_lxend, ps_cur_mb_info->u1_mb_mc_mode);

                        }

                        /* for generic case based on pred mode derived / signalled */

                        u1_lx_start = 0;

                        u1_lxend = 2;

                        if(PRED_L0 == u1_pred_mode)

                        {

                            s_mvPred.i2_mv[2] = 0;

                            s_mvPred.i2_mv[3] = 0;

                            u1_lxend = 1;

                        }

                        if(PRED_L1 == u1_pred_mode)

                        {

                            s_mvPred.i2_mv[0] = 0;

                            s_mvPred.i2_mv[1] = 0;

                            u1_lx_start = 1;

                        }

                        /**********************************************************/

                        /* Loop on number of predictors, 1 Each for Forw Backw    */

                        /* Loop 2 times for BiDirect mode                         */

                        /**********************************************************/

                        for(u1_lx = u1_lx_start; u1_lx < u1_lxend; u1_lx++)

                        {

                            UWORD8 u1_motion_pred_flag =

                                u1_lx ? u1_motion_pred_flag_l1 : u1_motion_pred_flag_l0;

                            if((0 != (u1_motion_pred_flag & (1 << u1_blk_no))) ||

                               (ps_svc_cur_mb_info->u1_base_mode_flag))

                            {

                                isvcd_retrive_infer_mode_mv(ps_svc_lyr_dec, &s_mvPred, u1_lx,

                                                            u1_sub_mb_num);

                            }

                            /********************************************************/

                            /* Predict Mv                                           */

                            /* Add Mv Residuals and store back                      */

                            /********************************************************/

                            u1_tmp_lx = (u1_lx << 1);

                            i1_ref_idx = s_mvPred.i1_ref_frame[u1_lx];

                            /********************************************************************/

                            /* If reference index is inferred from the base layer and it is     */

                            /* exceeding the number of active reference in the current layer.   */

                            /* Then reference index is clipped to the max in the current layer  */

                            /********************************************************************/

                            if(ps_svc_cur_mb_info->u1_base_mode_flag == 1)

                            {

                                if(i1_ref_idx > (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[u1_lx] - 1))

                                {

                                    i1_ref_idx = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[u1_lx] - 1;

                                }

                            }

                            if(0 == ps_svc_cur_mb_info->u1_base_mode_flag)

                            {

                                i2_mv_x = ps_mv_nmb->i2_mv[u1_tmp_lx];

                                i2_mv_y = ps_mv_nmb->i2_mv[u1_tmp_lx + 1];

                                i2_mv_x += s_mvPred.i2_mv[u1_tmp_lx];

                                i2_mv_y += s_mvPred.i2_mv[u1_tmp_lx + 1];

                                s_mvPred.i2_mv[u1_tmp_lx] = i2_mv_x;

                                s_mvPred.i2_mv[u1_tmp_lx + 1] = i2_mv_y;

                            }

                            else

                            {

                                i2_mv_x = s_mvPred.i2_mv[u1_tmp_lx];

                                i2_mv_y = s_mvPred.i2_mv[u1_tmp_lx + 1];

                            }

                            /********************************************************/

                            /* Transfer setup call                                  */

                            /* convert RefIdx if it is MbAff                        */

                            /* Pass Weight Offset and refFrame                      */

                            /********************************************************/

                            i1_ref_idx1 = i1_ref_idx >> u1_scale_ref;

                            if(-1 == i1_ref_idx1) return NOT_OK;

                            if(u1_scale_ref && ((i1_ref_idx & 0x01) != u4_bot_mb))

                                i1_ref_idx1 += MAX_REF_BUFS;

                            ps_ref_frame = ps_dec->ps_ref_pic_buf_lx[u1_lx][i1_ref_idx1];

                            /* Storing Colocated-Zero u4_flag */

                            if(u1_lx == u1_lx_start)

                            {

                                /* Fill colocated info in MvPred structure */

                                s_mvPred.u1_col_ref_pic_idx = ps_ref_frame->u1_mv_buf_id;

                                s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type;

                                /* Calculating colocated zero information */

                                u1_colz =

                                    (u1_field << 1) | ((i1_ref_idx == 0) && (ABS(i2_mv_x) <= 1) &&

                                                       (ABS(i2_mv_y) <= 1));

                                u1_colz |= ps_mb_part_info->u1_col_info[u1_blk_no];

                            }

                            pu4_wt_offst = ppu4_wt_ofst[u1_blk_no];

                            {

                                pred_info_pkd_t *ps_pred_pkd;

                                WORD16 i2_mv[2];

                                i2_mv[0] = i2_mv_x;

                                i2_mv[1] = i2_mv_y;

                                ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;

                                ih264d_fill_pred_info(i2_mv, u1_wd, u1_ht, u1_sub_mb_num,

                                                      u1_pred_mode, ps_pred_pkd,

                                                      ps_ref_frame->u1_pic_buf_id, i1_ref_idx,

                                                      pu4_wt_offst, ps_ref_frame->u1_pic_type);

                                ps_dec->u4_pred_info_pkd_idx++;

                                ps_cur_mb_info->u1_num_pred_parts++;

                            }

                        }

                        if(ps_mv_nmb)

                        {

                            ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb, u1_sub_mb_num, u1_colz,

                                               u1_ht, u1_wd);

                        }

                        else

                        {

                            return NOT_OK;

                        }

                    }

                }

                /* to take care of 16 parttitions increment for base mode flag case*/

                if(1 == ps_svc_cur_mb_info->u1_base_mode_flag)

                {

                    ps_part += (MAX_NUM_MB_PART - u1_num_part);

                }

            }

            else

            {

                /* Set zero values in case of Intra Mbs */

                mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};

                /* to take care of 16 parttitions increment for base mode flag case*/

                if(1 != ps_svc_cur_mb_info->u1_base_mode_flag)

                {

                    return NOT_OK;

                }

                ps_cur_deblk_mb->u1_mb_type |= D_INTRA_IBL;

                if((ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) &&

                   (DBLK_ENABLED == ps_dec->ps_cur_slice->u1_disable_dblk_filter_idc))

                {

                    ps_cur_deblk_mb->u1_deblocking_mode = MB_ENABLE_FILTERING;

                }

                ps_part += (MAX_NUM_MB_PART);

                /* Storing colocated zero information */

                if(ps_mv_nmb_start)

                {

                    ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,

                                       (UWORD8) (u1_field << 1), 4, 4);

                }

                else

                {

                    return NOT_OK;

                }

            }

        }

        else

        {

            /* Set zero values in case of Intra Mbs */

            mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};

            /* Storing colocated zero information */

            if(ps_mv_nmb_start)

            {

                ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8) (u1_field << 1),

                                   4, 4);

            }

            else

            {

                return NOT_OK;

            }

        }

    }

    return OK;

}

/*!

**************************************************************************

* \if Function name : isvcd_parse_bmb_cavlc \endif

*

* \brief

*    This function parses CAVLC syntax of a B MB.

*

* \return

*    0 on Success and Error code otherwise

**************************************************************************

*/

WORD32 isvcd_parse_bmb_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,

                             dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD32 u4_mb_num,

                             UWORD32 u4_num_mbsNby2)

{

    UWORD32 u4_cbp = 0;

    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;

    deblk_mb_t *ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u4_mb_num;

    dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;

    UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;

    UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;

    const UWORD8 *puc_mb_mc_mode = (const UWORD8 *) gau1_ih264d_mb_mc_mode;

    UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;

    WORD32 ret;

    UWORD8 u1_Bdirect_tranform_read = 1;

    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;

    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1;

    ps_cur_mb_info->u1_tran_form8x8 = 0;

    ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;

    ps_cur_mb_info->u1_yuv_dc_block_flag = 0;

    ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type];

    ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE;

    if(u1_mb_type != B_DIRECT)

    {

        ret = isvcd_parse_bmb_non_direct_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,

                                               u4_mb_num, u4_num_mbsNby2);

        if(ret != OK) return ret;

    }

    else

    {

        /************ STORING PARTITION INFO ***********/

        parse_part_params_t *ps_part_info;

        ps_part_info = ps_dec->ps_part;

        ps_part_info->u1_is_direct = PART_DIRECT_16x16;

        ps_part_info->u1_sub_mb_num = 0;

        ps_dec->ps_part++;

        /* check whether transform8x8 u4_flag to be read or not */

        u1_Bdirect_tranform_read = ps_dec->s_high_profile.u1_direct_8x8_inference_flag;

    }

    if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag &&

       ps_svc_cur_mb_info->u1_crop_window_flag)

    {

        ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_get_bit_h264(ps_bitstrm);

        COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag",

                       ps_svc_cur_mb_info->u1_residual_prediction_flag);

    }

    else

    {

        /*residual flag inference code */

        if(1 == ps_svc_cur_mb_info->u1_crop_window_flag &&

           1 == ps_svc_cur_mb_info->u1_base_mode_flag)

        {

            ps_svc_cur_mb_info->u1_residual_prediction_flag =

                ps_svc_slice_params->u1_default_residual_prediction_flag;

        }

        else

        {

            ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;

        }

    }

    if(ps_svc_slice_params->u1_scan_idx_end >= ps_svc_slice_params->u1_scan_idx_start)

    {

        /* Read the Coded block pattern */

        const UWORD8 *puc_CbpInter = gau1_ih264d_cbp_inter;

        // Inlined ih264d_uev

        UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;

        UWORD32 u4_word, u4_ldz;

        /***************************************************************/

        /* Find leading zeros in next 32 bits                          */

        /***************************************************************/

        NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);

        u4_ldz = CLZ(u4_word);

        /* Flush the ps_bitstrm */

        u4_bitstream_offset += (u4_ldz + 1);

        /* Read the suffix from the ps_bitstrm */

        u4_word = 0;

        if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);

        *pu4_bitstrm_ofst = u4_bitstream_offset;

        u4_cbp = ((1 << u4_ldz) + u4_word - 1);

        // Inlined ih264d_uev

        if(u4_cbp > 47) return ERROR_CBP;

        u4_cbp = puc_CbpInter[u4_cbp];

        if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & (0xf)) &&

           (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) && (u1_Bdirect_tranform_read))

        {

            ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm);

            COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);

            ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;

        }

        COPYTHECONTEXT("coded_block_pattern", u4_cbp);

        ps_cur_mb_info->u1_cbp = u4_cbp;

    }

    /* Read mb_qp_delta */

    if(u4_cbp)

    {

        WORD32 i_temp;

        // inlining ih264d_sev

        UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;

        UWORD32 u4_word, u4_ldz, u4_abs_val;

        /***************************************************************/

        /* Find leading zeros in next 32 bits                          */

        /***************************************************************/

        NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);

        u4_ldz = CLZ(u4_word);

        /* Flush the ps_bitstrm */

        u4_bitstream_offset += (u4_ldz + 1);

        /* Read the suffix from the ps_bitstrm */

        u4_word = 0;

        if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);

        *pu4_bitstrm_ofst = u4_bitstream_offset;

        u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;

        if(u4_word & 0x1)

            i_temp = (-(WORD32) u4_abs_val);

        else

            i_temp = (u4_abs_val);

        if(i_temp < -26 || i_temp > 25) return ERROR_INV_RANGE_QP_T;

        // inlinined ih264d_sev

        COPYTHECONTEXT("mb_qp_delta", i_temp);

        if(i_temp)

        {

            ret = ih264d_update_qp(ps_dec, (WORD8) i_temp);

            if(ret != OK) return ret;

        }

        /*SVC residual from start to end idx*/

        ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0);

        if(ret != OK) return ret;

        if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;

    }

    else

    {

        ps_dec->i1_prev_mb_qp_delta = 0;

        ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);

    }

    return OK;

}

/*!

**************************************************************************

* \if Function name : ParseMb_SubMb_PredBCab_svc\endif

*

* \brief

*    Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1

*

* \return

*    None.

*

**************************************************************************

*/

WORD32 isvcd_parse_bmb_non_direct_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,

                                        dec_mb_info_t *ps_cur_mb_info,

                                        dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD32 u4_mb_num,

                                        UWORD32 u4_num_mbsNby2)

{

    /* Loads from ps_dec */

    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;

    decoding_envirnoment_t *ps_cab_env = &ps_dec->s_cab_dec_env;

    dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;

    ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;

    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data + u4_num_mbsNby2;

    /* table pointer loads */

    const UWORD8 *pu1_sub_mb_pred_modes = (UWORD8 *) (gau1_ih264d_submb_pred_modes) + 4;

    const UWORD8(*pu1_mb_pred_modes)[32] = (const UWORD8(*)[32]) gau1_ih264d_mb_pred_modes;

    const UWORD8 *pu1_num_mb_part = (const UWORD8 *) gau1_ih264d_num_mb_part;

    const UWORD8 *pu1_sub_mb_mc_mode = (UWORD8 *) (gau1_ih264d_submb_mc_mode) + 4;

    const UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;

    UWORD8 *pu1_col_info = ps_parse_mb_data->u1_col_info;

    WORD8 *pi1_ref_idx_l0 = &ps_parse_mb_data->i1_ref_idx[0][0];

    WORD8 *pi1_ref_idx_l1 = &ps_parse_mb_data->i1_ref_idx[1][0];

    UWORD8 u1_dec_ref_l0, u1_dec_ref_l1;

    UWORD8 u1_num_mb_part, u1_mb_mc_mode, u1_sub_mb, u1_mbpred_mode = 5 + u1_mb_type;

    UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0;

    WORD32 ret;

    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;

    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    p_curr_ctxt->u1_mb_type = CAB_NON_BD16x16;

    u1_sub_mb = !(u1_mb_type ^ B_8x8);

    {

        UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;

        UWORD8 *pu1_num_ref_idx_lx_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active;

        UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;

        UWORD8 u1_mbaff_field = (u1_mbaff & uc_field);

        u1_dec_ref_l0 = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1;

        u1_dec_ref_l1 = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1;

    }

    if(u1_sub_mb)

    {

        const UWORD8 u1_colz = ((PRED_8x8) << 6);

        UWORD8 uc_i;

        u1_mb_mc_mode = 0;

        u1_num_mb_part = 4;

        /* Reading the subMB type */

        for(uc_i = 0; uc_i < 4; uc_i++)

        {

            UWORD8 u1_sub_mb_mode, u1_subMbPredModes;

            u1_sub_mb_mode =

                ih264d_parse_submb_type_cabac(1, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t);

            if(u1_sub_mb_mode > 12) return ERROR_SUB_MB_TYPE;

            u1_subMbPredModes = pu1_sub_mb_pred_modes[u1_sub_mb_mode];

            u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[u1_sub_mb_mode];

            u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredModes;

            *pi1_ref_idx_l0++ = (u1_subMbPredModes & PRED_L0) ? u1_dec_ref_l0 : -1;

            *pi1_ref_idx_l1++ = (u1_subMbPredModes & PRED_L1) ? u1_dec_ref_l1 : -1;

            COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);

            /* Storing collocated Mb and SubMb mode information */

            *pu1_col_info++ = (u1_colz | (pu1_sub_mb_mc_mode[u1_sub_mb_mode] << 4));

            if(u1_sub_mb_mode != B_DIRECT_8x8)

            {

                if(u1_sub_mb_mode > B_BI_8x8)

                {

                    ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;

                }

            }

            else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag)

            {

                ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;

            }

        }

        pi1_ref_idx_l0 -= 4;

        pi1_ref_idx_l1 -= 4;

    }

    else

    {

        UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mbpred_mode];

        UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mbpred_mode];

        u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode;

        u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode];

        /* Storing collocated Mb and SubMb mode information */

        *pu1_col_info++ = (u1_mb_mc_mode << 6);

        if(u1_mb_mc_mode) *pu1_col_info++ = (u1_mb_mc_mode << 6);

        u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8);

        u4_mb_mc_mode <<= 16;

        u4_mb_pred_mode = ((u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1) << 16;

        *pi1_ref_idx_l0++ = (u1_mb_pred_mode_part0 & PRED_L0) ? u1_dec_ref_l0 : -1;

        *pi1_ref_idx_l0-- = (u1_mb_pred_mode_part1 & PRED_L0) ? u1_dec_ref_l0 : -1;

        *pi1_ref_idx_l1++ = (u1_mb_pred_mode_part0 & PRED_L1) ? u1_dec_ref_l1 : -1;

        *pi1_ref_idx_l1-- = (u1_mb_pred_mode_part1 & PRED_L1) ? u1_dec_ref_l1 : -1;

    }

    /*Adding SVC extension code to get Motion Prediction Flags*/

    {

        UWORD8 uc_i, u1_mvp_l1, u1_mvp_l0;

        UWORD8 *pu1_motion_pred_flag_l0;

        UWORD8 *pu1_motion_pred_flag_l1;

        WORD8 *pi1_ref_idx;

        WORD8 *pi1_lft_cxt = ps_dec->pi1_left_ref_idx_ctxt_inc;

        WORD8 *pi1_top_cxt = p_curr_ctxt->i1_ref_idx;

        pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0];

        *pu1_motion_pred_flag_l0 = 0;

        pu1_motion_pred_flag_l1 = &ps_svc_cur_mb_info->au1_motion_pred_flag[1];

        *pu1_motion_pred_flag_l1 = 0;

        if(ps_svc_cur_mb_info->u1_crop_window_flag &&

           ps_svc_slice_params->u1_adaptive_motion_prediction_flag)

        {

            pi1_ref_idx = pi1_ref_idx_l0;

            for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++, pi1_ref_idx++)

            {

                if(*pi1_ref_idx > 0)

                {

                    u1_mvp_l0 = ih264d_decode_bin(0, ps_svc_lyr_dec->ps_motion_prediction_flag_l0,

                                                  ps_bitstrm, ps_cab_env);

                    COPYTHECONTEXT("SVC ext: u1_motion_prediction_flag_l0", u1_mvp_l0);

                    *pu1_motion_pred_flag_l0 |= (u1_mvp_l0 << uc_i);

                    if((u1_mvp_l0 & 0x01))

                    {

                        *pi1_ref_idx = -1;

                    }

                }

            }

            pi1_ref_idx = pi1_ref_idx_l1;

            for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++, pi1_ref_idx++)

            {

                if(*pi1_ref_idx > 0)

                {

                    u1_mvp_l1 = ih264d_decode_bin(0, ps_svc_lyr_dec->ps_motion_prediction_flag_l1,

                                                  ps_bitstrm, ps_cab_env);

                    COPYTHECONTEXT("SVC ext: u1_motion_prediction_flag_l1", u1_mvp_l1);

                    *pu1_motion_pred_flag_l1 |= (u1_mvp_l1 << uc_i);

                    if((u1_mvp_l1 & 0x01))

                    {

                        *pi1_ref_idx = -1;

                    }

                }

            }

        }

        else if(ps_svc_cur_mb_info->u1_crop_window_flag)

        {

            *pu1_motion_pred_flag_l0 = ps_svc_slice_params->u1_default_motion_prediction_flag

                                           ? ((1 << u1_num_mb_part) - 1)

                                           : 0;

            *pu1_motion_pred_flag_l1 = ps_svc_slice_params->u1_default_motion_prediction_flag

                                           ? ((1 << u1_num_mb_part) - 1)

                                           : 0;

            if(ps_svc_slice_params->u1_default_motion_prediction_flag)

            {

                pi1_ref_idx_l0[0] = -1;

                pi1_ref_idx_l0[1] = -1;

                pi1_ref_idx_l0[2] = -1;

                pi1_ref_idx_l0[3] = -1;

                pi1_ref_idx_l1[0] = -1;

                pi1_ref_idx_l1[1] = -1;

                pi1_ref_idx_l1[2] = -1;

                pi1_ref_idx_l1[3] = -1;

            }

        }

        ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, u1_dec_ref_l0, u1_mb_mc_mode,

                                         pi1_ref_idx_l0, pi1_lft_cxt, pi1_top_cxt, ps_cab_env,

                                         ps_bitstrm, ps_dec->p_ref_idx_t);

        if(ret != OK)

        {

            return ret;

        }

        ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 2, u1_dec_ref_l1, u1_mb_mc_mode,

                                         pi1_ref_idx_l1, pi1_lft_cxt, pi1_top_cxt, ps_cab_env,

                                         ps_bitstrm, ps_dec->p_ref_idx_t);

        if(ret != OK)

        {

            return ret;

        }

    }

    /* Read MotionVectors */

    {

        const UWORD8 *pu1_top_left_sub_mb_indx;

        UWORD8 uc_j, uc_lx;

        UWORD8 u1_mb_part_wd, u1_mb_part_ht;

        const UWORD8 *pu1_sub_mb_indx_mod =

            (const UWORD8 *) gau1_ih264d_submb_indx_mod + (u1_sub_mb * 6);

        const UWORD8 *pu1_sub_mb_partw = (const UWORD8 *) gau1_ih264d_submb_partw;

        const UWORD8 *pu1_sub_mb_parth = (const UWORD8 *) gau1_ih264d_submb_parth;

        const UWORD8 *pu1_num_sub_mb_part = (const UWORD8 *) gau1_ih264d_num_submb_part;

        const UWORD8 *pu1_mb_partw = (const UWORD8 *) gau1_ih264d_mb_partw;

        const UWORD8 *pu1_mb_parth = (const UWORD8 *) gau1_ih264d_mb_parth;

        UWORD8 u1_p_idx = 0;

        UWORD8 u1_num_submb_part;

        parse_part_params_t *ps_part;

        mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u4_mb_num << 4);

        ps_part = ps_dec->ps_part;

        /* Default initialization for non subMb case */

        u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode];

        u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode];

        u1_num_submb_part = 1;

        /* Decoding the MV for the subMB */

        for(uc_lx = 0; uc_lx < 2; uc_lx++)

        {

            UWORD8 u1_sub_mb_num = 0;

            UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode;

            UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode;

            UWORD8 u1_mb_mc_mode_1, u1_pred_mode, uc_i;

            UWORD16 u2_sub_mb_num = 0x028A;

            UWORD8 u1_b2 = uc_lx << 1;

            u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0;