xref: /aosp_15_r20/external/libavc/decoder/svc/isvcd_parse_epslice.c (revision 495ae853bb871d1e5a258cb02c2cc13cde8ddb9a)

/******************************************************************************
 *
 * 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_epslice.c
 *
 * @brief
 *  Contains routines that decode a EP slice type
 *
 * @author
 *  Kishore
 *
 * @par List of Functions:
 *  - isvcd_parse_epslice()
 *  - isvcd_parse_inter_slice_data_cabac()
 *  - isvcd_parse_inter_slice_data_cabac_enh_lyr()
 *  - isvcd_parse_inter_slice_data_cavlc_enh_lyr()
 *  - isvcd_parse_pmb_cabac()
 *  - isvcd_parse_pmb_cavlc()
 *  - isvcd_mark_err_slice_skip()
 *  - isvcd_parse_interlayer_resamp_func_init()
 *  - isvcd_parse_pslice()
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */

#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_mvpred.h"
#include "ih264d_parse_islice.h"
#include "ih264d_process_intra_mb.h"
#include "ih264d_inter_pred.h"
#include "ih264d_process_pslice.h"
#include "ih264d_deblocking.h"
#include "ih264d_cabac.h"
#include "ih264d_parse_mb_header.h"
#include "ih264d_error_handler.h"
#include "ih264d_format_conv.h"
#include "ih264d_quant_scaling.h"
#include "ih264d_thread_parse_decode.h"
#include "ih264d_thread_compute_bs.h"
#include "ih264d_process_bslice.h"
#include "ithread.h"
#include "ih264d_utils.h"
#include "ih264d_format_conv.h"
#include "ih264d_parse_headers.h"
#include "isvcd_parse_headers.h"
#include "isvcd_process_epslice.h"
#include "isvcd_mode_mv_resamp.h"
#include "isvcd_parse_slice.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);

/*!
**************************************************************************
* \if Function name : isvcd_parse_epslice \endif
*
* \brief
*    Decodes a EP Slice
*
*
* \return
*    0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_epslice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    WORD32 i_status = OK;
    dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
    dec_slice_params_t *ps_cur_slice = ps_dec->ps_cur_slice;
    dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
    dec_seq_params_t *ps_seq;
    dec_svc_seq_params_t *ps_subset_seq;
    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
    dec_subset_seq_params_t *ps_sps_svc_ext = NULL;
    dec_nal_unit_svc_ext_params_t *ps_nal_svc_ext = NULL;

    UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
    UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
    UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
    UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;

    UWORD64 u8_ref_idx_l0;
    UWORD32 u4_temp;
    WORD32 i_temp;
    WORD32 ret;
    WORD64 i8_temp;

    ps_nal_svc_ext = ps_svc_lyr_dec->ps_nal_svc_ext;
    ps_seq = ps_pps->ps_sps;
    ps_seq += MAX_NUM_SEQ_PARAMS;
    ps_subset_seq =
        &ps_svc_lyr_dec->ps_subset_sps[MAX_NUM_SEQ_PARAMS + ps_seq->u1_seq_parameter_set_id];
    ps_sps_svc_ext = &ps_subset_seq->s_sps_svc_ext;
    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    /*--------------------------------------------------------------------*/
    /* Read remaining contents of the slice header                        */
    /*--------------------------------------------------------------------*/
    {
        WORD8 *pi1_buf;
        WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv;
        WORD32 *pi4_mv = (WORD32 *) pi2_mv;
        WORD16 *pi16_refFrame;

        pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame;
        pi16_refFrame = (WORD16 *) pi1_buf;
        *pi4_mv = 0;
        *(pi4_mv + 1) = 0;
        *pi16_refFrame = OUT_OF_RANGE_REF;
        ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8) -1;
        ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8) -1;
    }

    if(0 == ps_svc_lyr_dec->ps_nal_svc_ext->u1_quality_id)
    {
        ps_cur_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(ps_bitstrm);

        COPYTHECONTEXT("Slice Header SVC ext: num_ref_idx_override_flag",
                       ps_cur_slice->u1_num_ref_idx_active_override_flag);

        u8_ref_idx_l0 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0];
        if(ps_cur_slice->u1_num_ref_idx_active_override_flag)
        {
            u8_ref_idx_l0 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + (UWORD64) 1;
        }

        {
            UWORD8 u1_max_ref_idx = H264_MAX_REF_PICS << u1_field_pic_flag;
            if(u8_ref_idx_l0 > u1_max_ref_idx)
            {
                return ERROR_NUM_REF;
            }
            ps_cur_slice->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_ref_idx_l0;
            COPYTHECONTEXT("Slice Header SVC ext: num_ref_idx_l0_active_minus1",
                           ps_cur_slice->u1_num_ref_idx_lx_active[0] - 1);
        }

        {
            UWORD8 uc_refIdxReFlagL0 = ih264d_get_bit_h264(ps_bitstrm);
            COPYTHECONTEXT("Slice Header SVC ext: ref_pic_list_reordering_flag_l0",
                           uc_refIdxReFlagL0);

            ih264d_init_ref_idx_lx_p(ps_dec);
            /* Store the value for future slices in the same picture */
            ps_dec->u1_num_ref_idx_lx_active_prev = ps_cur_slice->u1_num_ref_idx_lx_active[0];

            /* Modified temporarily */
            if(uc_refIdxReFlagL0)
            {
                WORD8 ret;
                ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
                ret = ih264d_ref_idx_reordering(ps_dec, 0);
                if(ret == -1) return ERROR_REFIDX_ORDER_T;
                ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
            }
            else
                ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0];
        }
        /* Create refIdx to POC mapping */
        {
            void **pui_map_ref_idx_to_poc_lx0, **pui_map_ref_idx_to_poc_lx1;
            WORD8 idx;
            struct pic_buffer_t *ps_pic;

            pui_map_ref_idx_to_poc_lx0 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0;
            pui_map_ref_idx_to_poc_lx0[0] = 0;
            pui_map_ref_idx_to_poc_lx0++;
            for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
            {
                ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
                pui_map_ref_idx_to_poc_lx0[idx] = (ps_pic->pu1_buf1);
            }

            /* Bug Fix Deblocking */
            pui_map_ref_idx_to_poc_lx1 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1;
            pui_map_ref_idx_to_poc_lx1[0] = 0;

            if(u1_mbaff)
            {
                void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b;
                void **ppv_map_ref_idx_to_poc_lx_t1, **ppv_map_ref_idx_to_poc_lx_b1;
                ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L0;
                ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L0;

                ppv_map_ref_idx_to_poc_lx_t[0] = 0;
                ppv_map_ref_idx_to_poc_lx_t++;
                ppv_map_ref_idx_to_poc_lx_b[0] = 0;
                ppv_map_ref_idx_to_poc_lx_b++;

                idx = 0;
                for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
                {
                    ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
                    ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1);
                    ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1);

                    ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1;
                    ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1;

                    ppv_map_ref_idx_to_poc_lx_t += 2;
                    ppv_map_ref_idx_to_poc_lx_b += 2;
                }
                ppv_map_ref_idx_to_poc_lx_t1 = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1;
                ppv_map_ref_idx_to_poc_lx_t1[0] = 0;
                ppv_map_ref_idx_to_poc_lx_b1 = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1;
                ppv_map_ref_idx_to_poc_lx_b1[0] = 0;
            }
            /* BS is moved post recon gen in libsvc*/
            if(ps_dec->u4_num_cores >= 2)
            {
                WORD32 num_entries;
                WORD32 size;

                num_entries = MAX_FRAMES;
                if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && (0 == ps_dec->i4_display_delay))
                {
                    num_entries = 1;
                }
                num_entries = ((2 * num_entries) + 1);
                num_entries *= 2;

                size = num_entries * sizeof(void *);
                size += PAD_MAP_IDX_POC * sizeof(void *);

                memcpy((void *) ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc,
                       ps_dec->ppv_map_ref_idx_to_poc, size);
            }
        }
        if(ps_pps->u1_wted_pred_flag)
        {
            if(!ps_nal_svc_ext->u1_no_inter_layer_pred_flag)
            {
                ps_svc_slice_params->u1_base_pred_weight_table_flag =
                    ih264d_get_bit_h264(ps_bitstrm);
                COPYTHECONTEXT("Slice Header SVC ext: u1_base_pred_weight_table_flag",
                               ps_svc_slice_params->u1_base_pred_weight_table_flag);
            }

            if(ps_nal_svc_ext->u1_no_inter_layer_pred_flag ||
               !ps_svc_slice_params->u1_base_pred_weight_table_flag)
            {
                ret = ih264d_parse_pred_weight_table(ps_cur_slice, ps_bitstrm);
                if(ret != OK) return ret;

                ih264d_form_pred_weight_matrix(ps_dec);
                ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
            }
        }
        else
        {
            ps_dec->ps_cur_slice->u2_log2Y_crwd = 0;
            ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
        }

        ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd;

        if(u1_mbaff && (u1_field_pic_flag == 0))
        {
            ih264d_convert_frm_mbaff_list(ps_dec);
        }

        /* G050 */
        if(ps_cur_slice->u1_nal_ref_idc != 0)
        {
            if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
            {
                dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
                dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
                UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;

                ps_pps->ps_sps = ps_dec->ps_cur_sps;

                if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
                    ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;

                i_temp = ih264d_read_mmco_commands(ps_dec);

                ps_pps->ps_sps = ps_sps_tmp;
                ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;

                if(i_temp < 0)
                {
                    return ERROR_DBP_MANAGER_T;
                }
                ps_dec->u4_bitoffset = i_temp;
            }
            else
                ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;

            if(!ps_sps_svc_ext->u1_slice_header_restriction_flag)
            {
                ps_svc_slice_params->u1_store_ref_base_pic_flag = ih264d_get_bit_h264(ps_bitstrm);
                COPYTHECONTEXT("SPS_SVC_EXT: u1_store_ref_base_pic_flag",
                               ps_svc_slice_params->u1_store_ref_base_pic_flag);

                if(0 != ps_svc_slice_params->u1_store_ref_base_pic_flag)
                {
                    return NOT_OK;
                }
                if(((1 == ps_nal_svc_ext->u1_use_ref_base_pic_flag) ||
                    (1 == ps_svc_slice_params->u1_store_ref_base_pic_flag)) &&
                   (!ps_nal_svc_ext->u1_idr_flag))
                {
                    i_status = isvcd_dec_ref_base_pic_marking(
                        &ps_svc_slice_params->s_ref_base_pic_marking_svc_ext, ps_bitstrm);
                    if(i_status != OK)
                    {
                        return i_status;
                    }
                }
            }
        }
    }
    /* G050 */

    if(ps_pps->u1_entropy_coding_mode == CABAC)
    {
        u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);

        if(u4_temp > MAX_CABAC_INIT_IDC)
        {
            return ERROR_INV_SLICE_HDR_T;
        }
        ps_cur_slice->u1_cabac_init_idc = u4_temp;
        COPYTHECONTEXT("Slice Header SVC ext: cabac_init_idc", ps_cur_slice->u1_cabac_init_idc);
    }

    /* Read slice_qp_delta */
    i8_temp = (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
    if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP))
    {
        return ERROR_INV_RANGE_QP_T;
    }
    ps_cur_slice->u1_slice_qp = (UWORD8) i8_temp;
    COPYTHECONTEXT("Slice Header SVC ext: slice_qp_delta",
                   (WORD8) (ps_cur_slice->u1_slice_qp - ps_pps->u1_pic_init_qp));

    if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
    {
        u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
        if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
        {
            return ERROR_INV_SLICE_HDR_T;
        }

        COPYTHECONTEXT("Slice Header SVC ext: disable_deblocking_filter_idc", u4_temp);
        ps_cur_slice->u1_disable_dblk_filter_idc = u4_temp;
        if(u4_temp != 1)
        {
            i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
            if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
            {
                return ERROR_INV_SLICE_HDR_T;
            }
            ps_cur_slice->i1_slice_alpha_c0_offset = i_temp;
            COPYTHECONTEXT("Slice Header SVC ext: slice_alpha_c0_offset_div2",
                           ps_cur_slice->i1_slice_alpha_c0_offset >> 1);

            i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
            if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
            {
                return ERROR_INV_SLICE_HDR_T;
            }
            ps_cur_slice->i1_slice_beta_offset = i_temp;
            COPYTHECONTEXT("Slice Header SVC ext: slice_beta_offset_div2",
                           ps_cur_slice->i1_slice_beta_offset >> 1);
        }
        else
        {
            ps_cur_slice->i1_slice_alpha_c0_offset = 0;
            ps_cur_slice->i1_slice_beta_offset = 0;
        }
    }
    else
    {
        ps_cur_slice->u1_disable_dblk_filter_idc = 0;
        ps_cur_slice->i1_slice_alpha_c0_offset = 0;
        ps_cur_slice->i1_slice_beta_offset = 0;
    }

    /* add the remaining part of the code for svc extension from reference */
    ret = isvcd_set_default_slice_header_ext(ps_svc_lyr_dec);
    if(ret != OK)
    {
        return ERROR_INV_SLICE_HDR_T;
    }

    ret = isvcd_parse_slice_header(ps_svc_lyr_dec);
    if(ret != OK)
    {
        return ERROR_INV_SLICE_HDR_T;
    }

    ps_dec->u1_slice_header_done = 2;

    if(!ps_svc_slice_params->u1_slice_skip_flag)
    {
        if(ps_pps->u1_entropy_coding_mode)
        {
            SWITCHOFFTRACE;
            SWITCHONTRACECABAC;
            ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext =
                isvcd_parse_inter_slice_data_cabac_enh_lyr;
            ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext = isvcd_parse_pmb_cabac;

            isvcd_init_cabac_contexts(P_SLICE, ps_dec);

            if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
                ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
            else
                ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
        }
        else
        {
            SWITCHONTRACE;
            SWITCHOFFTRACECABAC;
            ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext =
                isvcd_parse_inter_slice_data_cavlc_enh_lyr;
            ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext = isvcd_parse_pmb_cavlc;

            if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
            {
                ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
            }
            else
                ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
        }
    }
    else
    {
        return ERROR_FEATURE_UNAVAIL;
    }

    ps_dec->u1_B = 0;
    ps_dec->pf_mvpred_ref_tfr_nby2mb = isvcd_mv_pred_ref_tfr_nby2_epmb;
    ret = ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext(ps_svc_lyr_dec, ps_cur_slice,
                                                       u2_first_mb_in_slice);
    if(ret != OK) return ret;

    return OK;
}

/*****************************************************************************/
/*                                                                           */
/*  Function Name : isvcd_parse_inter_slice_data_cabac                       */
/*                                                                           */
/*  Description   : This function parses cabac syntax of a inter slice on    */
/*                  N MB basis.                                              */
/*                                                                           */
/*  Inputs        : ps_dec                                                   */
/*                  sliceparams                                              */
/*                  firstMbInSlice                                           */
/*                                                                           */
/*  Processing    : 1. After parsing syntax for N MBs those N MBs are        */
/*                     decoded till the end of slice.                        */
/*                  2. MV prediction and DMA happens on a N/2 MB basis.      */
/*                                                                           */
/*  Returns       : 0                                                        */
/*                                                                           */
/*  Issues        : <List any issues or problems with this function>         */
/*                                                                           */
/*  Revision History:                                                        */
/*                                                                           */
/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
/*         13 07 2002   Jay             Draft                                */
/*                                                                           */
/*****************************************************************************/
WORD32 isvcd_parse_inter_slice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
                                          dec_slice_params_t *ps_slice,
                                          UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;

    UWORD32 uc_more_data_flag;
    WORD32 i2_cur_mb_addr;
    UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx;
    UWORD32 u1_mbaff;
    UWORD32 u1_num_mbs_next, u1_end_of_row;
    const UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
    UWORD32 u1_slice_end = 0;
    UWORD32 u1_tfr_n_mb = 0;
    UWORD32 u1_decode_nmb = 0;

    deblk_mb_t *ps_cur_deblk_mb;
    dec_mb_info_t *ps_cur_mb_info;
    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data;
    UWORD32 u1_inter_mb_skip_type;
    UWORD32 u1_inter_mb_type;
    UWORD32 u1_deblk_mb_type;
    UWORD32 u1_mb_threshold;
    dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
    WORD32 ret = OK;

    /******************************************************/
    /* Initialisations specific to B or P slice           */
    /******************************************************/
    if(ps_slice->u1_slice_type == P_SLICE)
    {
        u1_inter_mb_skip_type = CAB_P_SKIP;
        u1_inter_mb_type = P_MB;
        u1_deblk_mb_type = D_INTER_MB;
        u1_mb_threshold = 5;
    }
    else  // B_SLICE
    {
        u1_inter_mb_skip_type = CAB_B_SKIP;
        u1_inter_mb_type = B_MB;
        u1_deblk_mb_type = D_B_SLICE;
        u1_mb_threshold = 23;
    }

    /******************************************************/
    /* Slice Level Initialisations                        */
    /******************************************************/
    i2_cur_mb_addr = u2_first_mb_in_slice;
    ps_dec->u1_qp = ps_slice->u1_slice_qp;
    ih264d_update_qp(ps_dec, 0);
    u1_mb_idx = ps_dec->u1_mb_idx;
    u1_num_mbs = u1_mb_idx;
    u1_num_mbsNby2 = 0;
    u1_mbaff = ps_slice->u1_mbaff_frame_flag;
    i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
    uc_more_data_flag = 1;

    /* Initialisations specific to cabac */
    if(ps_bitstrm->u4_ofst & 0x07)
    {
        ps_bitstrm->u4_ofst += 8;
        ps_bitstrm->u4_ofst &= 0xFFFFFFF8;
    }

    ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm);
    if(ret != OK) return ret;

    ps_dec->i1_prev_mb_qp_delta = 0;

    while(!u1_slice_end)
    {
        UWORD8 u1_mb_type;
        UWORD32 u4_mb_skip;

        ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;

        if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
        {
            break;
        }

        ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
        ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;

        ps_cur_mb_info->u1_Mux = 0;
        ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
        ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
        ps_cur_mb_info->u1_end_of_slice = 0;

        /* Storing Default partition info */
        ps_parse_mb_data->u1_num_part = 1;
        ps_parse_mb_data->u1_isI_mb = 0;

        /***************************************************************/
        /* Get the required information for decoding of MB             */
        /* mb_x, mb_y , neighbour availablity,                         */
        /***************************************************************/
        u4_mb_skip = ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 1);

        /*********************************************************************/
        /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */
        /*********************************************************************/
        ps_cur_mb_info->u1_tran_form8x8 = 0;
        ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;

        /***************************************************************/
        /* Set the deblocking parameters for this MB                   */
        /***************************************************************/
        if(ps_dec->u4_app_disable_deblk_frm == 0)
            ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
                                             ps_dec->u1_mb_ngbr_availablity,
                                             ps_dec->u1_cur_mb_fld_dec_flag);

        if(u4_mb_skip)
        {
            /* Set appropriate flags in ps_cur_mb_info and ps_dec */
            memset(ps_dec->ps_curr_ctxt_mb_info, 0, sizeof(ctxt_inc_mb_info_t));
            ps_dec->ps_curr_ctxt_mb_info->u1_mb_type = u1_inter_mb_skip_type;

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

            *((UWORD32 *) ps_dec->pi1_left_ref_idx_ctxt_inc) = 0;
            *(ps_dec->pu1_left_yuv_dc_csbp) = 0;
            ps_dec->i1_prev_mb_qp_delta = 0;
            ps_cur_mb_info->u1_mb_type = MB_SKIP;
            ps_cur_mb_info->u1_cbp = 0;

            {
                /* Storing Skip partition info */
                parse_part_params_t *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++;
            }

            /* Update Nnzs */
            ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CABAC);
            ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
            ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
            ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
            if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
            {
                ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
            }
        }
        else
        {
            /* Macroblock Layer Begins */
            /* Decode the u1_mb_type */
            u1_mb_type = ih264d_parse_mb_type_cabac(ps_dec);
            ps_cur_mb_info->u1_mb_type = u1_mb_type;
            if(u1_mb_type > (25 + u1_mb_threshold)) return ERROR_MB_TYPE;

            /* Parse Macroblock Data */
            if(u1_mb_type < u1_mb_threshold)
            {
                ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
                *(ps_dec->pu1_left_yuv_dc_csbp) &= 0x6;

                ret = ps_dec->pf_parse_inter_mb(ps_dec, ps_cur_mb_info, u1_num_mbs, u1_num_mbsNby2);
                if(ret != OK) return ret;
                ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
                ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
                if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
                {
                    ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
                }
            }
            else
            {
                /* Storing Intra partition info */
                ps_parse_mb_data->u1_num_part = 0;
                ps_parse_mb_data->u1_isI_mb = 1;

                if((25 + u1_mb_threshold) == u1_mb_type)
                {
                    /* I_PCM_MB */
                    ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
                    ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
                    if(ret != OK) return ret;
                    ps_cur_deblk_mb->u1_mb_qp = 0;
                }
                else
                {
                    if(u1_mb_type == u1_mb_threshold)
                        ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
                    else
                        ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;

                    ret = ih264d_parse_imb_cabac(ps_dec, ps_cur_mb_info,
                                                 (UWORD8) (u1_mb_type - u1_mb_threshold));
                    if(ret != OK) return ret;
                    ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
                }
                ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
            }
        }

        if(ps_dec->u1_enable_mb_info)
        {
            ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
                                        ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
        }
        if(u1_mbaff)
        {
            ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
        }

        if(ps_cur_mb_info->u1_topmb && u1_mbaff)
            uc_more_data_flag = 1;
        else
        {
            uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, ps_bitstrm);
            uc_more_data_flag = !uc_more_data_flag;
            COPYTHECONTEXT("Decode Sliceterm", !uc_more_data_flag);
        }

        if(u1_mbaff)
        {
            if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
            {
                return ERROR_EOB_FLUSHBITS_T;
            }
        }
        /* Next macroblock information */
        i2_cur_mb_addr++;
        u1_num_mbs++;
        u1_num_mbsNby2++;
        ps_parse_mb_data++;

        /****************************************************************/
        /* Check for End Of Row and other flags that determine when to  */
        /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for   */
        /* N-Mb                                                         */
        /****************************************************************/
        u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
        u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
        u1_slice_end = !uc_more_data_flag;
        u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || u1_slice_end;
        u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
        ps_cur_mb_info->u1_end_of_slice = u1_slice_end;

        if(u1_decode_nmb)
        {
            ret = ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
            u1_num_mbsNby2 = 0;
            {
                ps_parse_mb_data = ps_dec->ps_parse_mb_data;
                ps_dec->ps_part = ps_dec->ps_parse_part_params;
            }
            if(ret != OK) return ret;
        }

        if(u1_decode_nmb)
        {
            if(ps_dec->u1_separate_parse)
            {
                ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
                                     u1_end_of_row);
                ps_dec->ps_nmb_info += u1_num_mbs;
                ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
            }
            else
            {
                if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
                {
                    ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
                                                u1_tfr_n_mb, u1_end_of_row);
                }
                else
                {
                    isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
                                                        u1_num_mbs_next, u1_tfr_n_mb,
                                                        u1_end_of_row);
                }
            }
            ps_dec->u2_total_mbs_coded += u1_num_mbs;
            if(u1_tfr_n_mb) u1_num_mbs = 0;
            u1_mb_idx = u1_num_mbs;
            ps_dec->u1_mb_idx = u1_num_mbs;
        }
    }

    ps_dec->u4_num_mbs_cur_nmb = 0;
    ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);

    return ret;
}

/*****************************************************************************/
/*                                                                           */
/*  Function Name : isvcd_parse_inter_slice_data_cavlc                       */
/*                                                                           */
/*  Description   : This function parses cavlc syntax of a inter slice on    */
/*                  N MB basis.                                              */
/*                                                                           */
/*  Inputs        : ps_dec                                                   */
/*                  sliceparams                                              */
/*                  firstMbInSlice                                           */
/*                                                                           */
/*  Processing    : 1. After parsing syntax for N MBs those N MBs are        */
/*                     decoded till the end of slice.                        */
/*                  2. MV prediction and DMA happens on a N/2 MB basis.      */
/*                                                                           */
/*  Returns       : 0                                                        */
/*                                                                           */
/*  Issues        : <List any issues or problems with this function>         */
/*                                                                           */
/*  Revision History:                                                        */
/*                                                                           */
/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
/*         13 07 2002   Jay             Draft                                */
/*                                                                           */
/*****************************************************************************/

WORD32 isvcd_parse_inter_slice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
                                          dec_slice_params_t *ps_slice,
                                          UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    UWORD32 uc_more_data_flag;
    WORD32 i2_cur_mb_addr;
    UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx;
    UWORD32 i2_mb_skip_run;
    UWORD32 u1_read_mb_type;

    UWORD32 u1_mbaff;
    UWORD32 u1_num_mbs_next, u1_end_of_row;
    const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
    UWORD32 u1_slice_end = 0;
    UWORD32 u1_tfr_n_mb = 0;
    UWORD32 u1_decode_nmb = 0;

    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;
    deblk_mb_t *ps_cur_deblk_mb;
    dec_mb_info_t *ps_cur_mb_info;
    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data;
    UWORD32 u1_inter_mb_type;
    UWORD32 u1_deblk_mb_type;
    UWORD32 u1_mb_threshold;
    WORD32 ret = OK;

    /******************************************************/
    /* Initialisations specific to B or P slice           */
    /******************************************************/
    if(ps_slice->u1_slice_type == P_SLICE)
    {
        u1_inter_mb_type = P_MB;
        u1_deblk_mb_type = D_INTER_MB;
        u1_mb_threshold = 5;
    }
    else  // B_SLICE
    {
        u1_inter_mb_type = B_MB;
        u1_deblk_mb_type = D_B_SLICE;
        u1_mb_threshold = 23;
    }

    /******************************************************/
    /* Slice Level Initialisations                        */
    /******************************************************/
    ps_dec->u1_qp = ps_slice->u1_slice_qp;
    ih264d_update_qp(ps_dec, 0);
    u1_mb_idx = ps_dec->u1_mb_idx;
    u1_num_mbs = u1_mb_idx;

    u1_num_mbsNby2 = 0;
    u1_mbaff = ps_slice->u1_mbaff_frame_flag;
    i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
    i2_mb_skip_run = 0;
    uc_more_data_flag = 1;
    u1_read_mb_type = 0;

    while(!u1_slice_end)
    {
        UWORD8 u1_mb_type;

        ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
        if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
        {
            break;
        }

        ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
        ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
        ps_cur_mb_info->u1_Mux = 0;
        ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
        ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;

        ps_cur_mb_info->u1_end_of_slice = 0;

        /* Storing Default partition info */
        ps_parse_mb_data->u1_num_part = 1;
        ps_parse_mb_data->u1_isI_mb = 0;

        if((!i2_mb_skip_run) && (!u1_read_mb_type))
        {
            // 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;
            i2_mb_skip_run = ((1 << u4_ldz) + u4_word - 1);
            // Inlined ih264d_uev
            COPYTHECONTEXT("mb_skip_run", i2_mb_skip_run);
            uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
            u1_read_mb_type = uc_more_data_flag;
        }

        /***************************************************************/
        /* Get the required information for decoding of MB            */
        /* mb_x, mb_y , neighbour availablity,                              */
        /***************************************************************/
        ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run);

        /***************************************************************/
        /* Set the deblocking parameters for this MB */
        /***************************************************************/
        if(ps_dec->u4_app_disable_deblk_frm == 0)
            ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
                                             ps_dec->u1_mb_ngbr_availablity,
                                             ps_dec->u1_cur_mb_fld_dec_flag);

        if(i2_mb_skip_run)
        {
            /* Set appropriate flags in ps_cur_mb_info and ps_dec */
            ps_dec->i1_prev_mb_qp_delta = 0;
            ps_dec->u1_sub_mb_num = 0;
            ps_cur_mb_info->u1_mb_type = MB_SKIP;
            ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16;
            ps_cur_mb_info->u1_cbp = 0;

            {
                /* Storing Skip partition info */
                parse_part_params_t *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++;
            }

            /* Update Nnzs */
            ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);

            ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
            ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;

            if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
            {
                ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
            }

            i2_mb_skip_run--;
        }
        else
        {
            u1_read_mb_type = 0;
            /**************************************************************/
            /* Macroblock Layer Begins, Decode the u1_mb_type                */
            /**************************************************************/
            {
                UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
                UWORD32 u4_word, u4_ldz, u4_temp;

                // Inlined ih264d_uev
                /***************************************************************/
                /* 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_temp = ((1 << u4_ldz) + u4_word - 1);
                // Inlined ih264d_uev
                if(u4_temp > (UWORD32) (25 + u1_mb_threshold)) return ERROR_MB_TYPE;
                u1_mb_type = u4_temp;
                COPYTHECONTEXT("u1_mb_type", u1_mb_type);
            }
            ps_cur_mb_info->u1_mb_type = u1_mb_type;

            /**************************************************************/
            /* Parse Macroblock data                                      */
            /**************************************************************/
            if(u1_mb_type < u1_mb_threshold)
            {
                ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;

                ret = ps_dec->pf_parse_inter_mb(ps_dec, ps_cur_mb_info, u1_num_mbs, u1_num_mbsNby2);
                if(ret != OK) return ret;
                ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;

                if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
                {
                    ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
                }
            }
            else
            {
                /* Storing Intra partition info */
                ps_parse_mb_data->u1_num_part = 0;
                ps_parse_mb_data->u1_isI_mb = 1;

                if((25 + u1_mb_threshold) == u1_mb_type)
                {
                    /* I_PCM_MB */
                    ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
                    ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
                    if(ret != OK) return ret;
                    ps_dec->u1_qp = 0;
                }
                else
                {
                    ret = ih264d_parse_imb_cavlc(ps_dec, ps_cur_mb_info, u1_num_mbs,
                                                 (UWORD8) (u1_mb_type - u1_mb_threshold));
                    if(ret != OK) return ret;
                }

                ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
            }
            uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
        }
        ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;

        if(ps_dec->u1_enable_mb_info)
        {
            ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
                                        ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
        }
        if(u1_mbaff)
        {
            ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
            if(!uc_more_data_flag && !i2_mb_skip_run && (0 == (i2_cur_mb_addr & 1)))
            {
                return ERROR_EOB_FLUSHBITS_T;
            }
        }

        /**************************************************************/
        /* Get next Macroblock address                                */
        /**************************************************************/
        i2_cur_mb_addr++;

        u1_num_mbs++;
        u1_num_mbsNby2++;
        ps_parse_mb_data++;

        /****************************************************************/
        /* Check for End Of Row and other flags that determine when to  */
        /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for   */
        /* N-Mb                                                         */
        /****************************************************************/
        u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
        u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
        u1_slice_end = (!(uc_more_data_flag || i2_mb_skip_run));
        u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || u1_slice_end;
        u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
        ps_cur_mb_info->u1_end_of_slice = u1_slice_end;

        if(u1_decode_nmb)
        {
            ret = ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
            u1_num_mbsNby2 = 0;
            ps_parse_mb_data = ps_dec->ps_parse_mb_data;
            ps_dec->ps_part = ps_dec->ps_parse_part_params;
            if(ret != OK) return ret;
        }

        if(u1_decode_nmb)
        {
            if(ps_dec->u1_separate_parse)
            {
                ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
                                     u1_end_of_row);
                ps_dec->ps_nmb_info += u1_num_mbs;
                ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
            }
            else
            {
                if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
                {
                    ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
                                                u1_tfr_n_mb, u1_end_of_row);
                }
                else
                {
                    isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
                                                        u1_num_mbs_next, u1_tfr_n_mb,
                                                        u1_end_of_row);
                }
            }
            ps_dec->u2_total_mbs_coded += u1_num_mbs;
            if(u1_tfr_n_mb) u1_num_mbs = 0;
            u1_mb_idx = u1_num_mbs;
            ps_dec->u1_mb_idx = u1_num_mbs;
        }
    }

    ps_dec->u4_num_mbs_cur_nmb = 0;
    ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);

    return ret;
}

/*****************************************************************************/
/*                                                                           */
/*  Function Name : isvcd_parse_inter_slice_data_cabac_enh_lyr               */
/*                                                                           */
/*  Description   : This function parses cabac syntax of a inter slice on    */
/*                  N MB basis for svc ext                                   */
/*                                                                           */
/*  Inputs        : ps_dec                                                   */
/*                  sliceparams                                              */
/*                  firstMbInSlice                                           */
/*                                                                           */
/*  Processing    : 1. After parsing syntax for N MBs those N MBs are        */
/*                     decoded till the end of slice.                        */
/*                  2. MV prediction and DMA happens on a N/2 MB basis.      */
/*                                                                           */
/*  Returns       : 0                                                        */
/*                                                                           */
/*  Issues        : <List any issues or problems with this function>         */
/*                                                                           */
/*  Revision History:                                                        */
/*                                                                           */
/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
/*         09 06 2021   Jay             Draft                                */
/*                                                                           */
/*****************************************************************************/
WORD32
isvcd_parse_inter_slice_data_cabac_enh_lyr(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
                                           dec_slice_params_t *ps_slice,
                                           UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    UWORD32 uc_more_data_flag;
    WORD32 i2_cur_mb_addr;
    UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx;
    UWORD32 u1_mbaff;
    UWORD32 u1_num_mbs_next, u1_end_of_row;
    const UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
    UWORD32 u1_slice_end = 0;
    UWORD32 u1_tfr_n_mb = 0;
    UWORD32 u1_decode_nmb = 0;

    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
    deblk_mb_t *ps_cur_deblk_mb;
    dec_mb_info_t *ps_cur_mb_info;
    dec_svc_mb_info_t *ps_svc_cur_mb_info;

    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data;
    UWORD32 u1_inter_mb_skip_type;
    UWORD32 u1_inter_mb_type;
    UWORD32 u1_deblk_mb_type;
    UWORD32 u1_mb_threshold;
    dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
    decoding_envirnoment_t *ps_cab_env = NULL;
    WORD32 ret = OK;

    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    /******************************************************/
    /* Initialisations specific to B or P slice           */
    /******************************************************/
    if(ps_slice->u1_slice_type == P_SLICE)
    {
        u1_inter_mb_skip_type = CAB_P_SKIP;
        u1_inter_mb_type = P_MB;
        u1_deblk_mb_type = D_INTER_MB;
        u1_mb_threshold = 5;
    }
    else  // EB_SLICE
    {
        u1_inter_mb_skip_type = CAB_B_SKIP;
        u1_inter_mb_type = B_MB;
        u1_deblk_mb_type = D_B_SLICE;
        u1_mb_threshold = 23;
    }

    /******************************************************/
    /* Slice Level Initialisations                        */
    /******************************************************/
    i2_cur_mb_addr = u2_first_mb_in_slice;
    ps_dec->u1_qp = ps_slice->u1_slice_qp;
    ih264d_update_qp(ps_dec, 0);
    u1_mb_idx = ps_dec->u1_mb_idx;
    u1_num_mbs = u1_mb_idx;
    u1_num_mbsNby2 = 0;
    u1_mbaff = ps_slice->u1_mbaff_frame_flag;
    i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
    uc_more_data_flag = 1;

    /* Initialisations specific to cabac */
    if(ps_bitstrm->u4_ofst & 0x07)
    {
        ps_bitstrm->u4_ofst += 8;
        ps_bitstrm->u4_ofst &= 0xFFFFFFF8;
    }

    ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm);
    if(ret != OK) return ret;

    ps_cab_env = &ps_dec->s_cab_dec_env;
    ps_dec->i1_prev_mb_qp_delta = 0;

    while(!u1_slice_end)
    {
        UWORD8 u1_mb_type;
        UWORD32 u4_mb_skip;
        ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
        if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
        {
            break;
        }

        ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
        ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
        ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
        ps_cur_mb_info->u1_Mux = 0;
        ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
        ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
        ps_cur_mb_info->u1_end_of_slice = 0;

        /* Storing Default partition info */
        ps_parse_mb_data->u1_num_part = 1;
        ps_parse_mb_data->u1_isI_mb = 0;

        /***************************************************************/
        /* Get the required information for decoding of MB             */
        /* mb_x, mb_y , neighbour availablity,                         */
        /***************************************************************/
        u4_mb_skip = ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 1);
        ps_svc_cur_mb_info->u1_crop_window_flag =
            *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
              (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
        /*********************************************************************/
        /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */
        /*********************************************************************/
        ps_cur_mb_info->u1_tran_form8x8 = 0;
        ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;

        /***************************************************************/
        /* Set the deblocking parameters for this MB                   */
        /***************************************************************/
        if(ps_dec->u4_app_disable_deblk_frm == 0)
            ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
                                             ps_dec->u1_mb_ngbr_availablity,
                                             ps_dec->u1_cur_mb_fld_dec_flag);

        if(u4_mb_skip)
        {
            /* Set appropriate flags in ps_cur_mb_info and ps_dec */
            memset(ps_dec->ps_curr_ctxt_mb_info, 0, sizeof(ctxt_inc_mb_info_t));
            ps_dec->ps_curr_ctxt_mb_info->u1_mb_type = u1_inter_mb_skip_type;

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

            *((UWORD32 *) ps_dec->pi1_left_ref_idx_ctxt_inc) = 0;
            *(ps_dec->pu1_left_yuv_dc_csbp) = 0;

            ps_dec->i1_prev_mb_qp_delta = 0;
            ps_cur_mb_info->u1_mb_type = MB_SKIP;
            ps_cur_mb_info->u1_cbp = 0;
            ps_svc_cur_mb_info->u1_base_mode_flag = 0;
            ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0;
            ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0;
            ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;

            {
                /* Storing Skip partition info */
                parse_part_params_t *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++;
            }

            /* Update Nnzs */
            ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CABAC);
            ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
            ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
            ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
            if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
            {
                ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
            }
        }
        else
        {
            /* Variables for handling Cabac contexts */
            UWORD8 *pu1_cur_svc_base_mode_flag;
            UWORD8 u1_left_svc_base_mode_flag;
            UWORD8 u1_top_svc_base_mode_flag;

            UWORD32 u4_a, u4_b, u4_ctxt_inc;
            ps_svc_cur_mb_info->u1_base_mode_flag = 0;
            /* Macroblock Layer Begins */
            if(ps_svc_cur_mb_info->u1_crop_window_flag &&
               ps_svc_slice_params->u1_adaptive_base_mode_flag)
            {
                pu1_cur_svc_base_mode_flag =
                    ps_svc_lyr_dec->pu1_svc_base_mode_flag + ps_cur_mb_info->u2_mbx;
                pu1_cur_svc_base_mode_flag +=
                    ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride;

                u1_left_svc_base_mode_flag = 0;
                if(ps_dec->u1_mb_ngbr_availablity & LEFT_MB_AVAILABLE_MASK)
                    u1_left_svc_base_mode_flag = *(pu1_cur_svc_base_mode_flag - 1);

                u1_top_svc_base_mode_flag = 0;
                if(ps_dec->u1_mb_ngbr_availablity & TOP_MB_AVAILABLE_MASK)
                    u1_top_svc_base_mode_flag =
                        *(pu1_cur_svc_base_mode_flag -
                          ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride);

                u4_a = 1;
                u4_b = 1;

                if(u1_top_svc_base_mode_flag)
                {
                    u4_a = 0;
                }

                if(u1_left_svc_base_mode_flag)
                {
                    u4_b = 0;
                }

                u4_ctxt_inc = u4_a + u4_b;
                ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_decode_bin(
                    u4_ctxt_inc, ps_svc_lyr_dec->ps_base_mode_flag, ps_bitstrm, ps_cab_env);
                COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_svc_cur_mb_info->u1_base_mode_flag);
                *pu1_cur_svc_base_mode_flag = ps_svc_cur_mb_info->u1_base_mode_flag;
            }
            else if(ps_svc_cur_mb_info->u1_crop_window_flag)
            {
                ps_svc_cur_mb_info->u1_base_mode_flag =
                    ps_svc_slice_params->u1_default_base_mode_flag;
            }

            if(!ps_svc_cur_mb_info->u1_base_mode_flag)
            {
                /* Decode the u1_mb_type */
                u1_mb_type = ih264d_parse_mb_type_cabac(ps_dec);
                ps_cur_mb_info->u1_mb_type = u1_mb_type;
                if(u1_mb_type > (25 + u1_mb_threshold)) return ERROR_MB_TYPE;
                COPYTHECONTEXT("u1_mb_type", u1_mb_type);
            }
            else
            {
                // default intialization for Base mode flag : reserved
                ps_dec->ps_part += MAX_NUM_MB_PART;

                ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0;
                ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0;
                ps_cur_mb_info->u1_mb_type = MB_INFER;
                ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
                if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
                {
                    ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
                }

                /*SVC EXT needs to update incropwindow*/
                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(
                        0, 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)
                    {
                        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;
                    }
                }
            }

            /* Parse Macroblock Data */
            u1_mb_type = ps_cur_mb_info->u1_mb_type;
            if(u1_mb_type < u1_mb_threshold)
            {
                ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
                *(ps_dec->pu1_left_yuv_dc_csbp) &= 0x6;

                ret = ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext(
                    ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, u1_num_mbs, u1_num_mbsNby2);
                if(ret != OK) return ret;
                ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
                ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
                if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
                {
                    ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
                }
            }
            else
            {
                /* Storing Intra partition info */
                ps_parse_mb_data->u1_num_part = 0;
                ps_parse_mb_data->u1_isI_mb = 1;

                if((25 + u1_mb_threshold) == u1_mb_type)
                {
                    /* I_PCM_MB */
                    ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
                    ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
                    if(ret != OK) return ret;
                    ps_cur_deblk_mb->u1_mb_qp = 0;
                    ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
                }
                else
                {
                    if(u1_mb_type == u1_mb_threshold)
                        ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
                    else
                        ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;

                    ret = isvcd_parse_imb_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
                                                (UWORD8) (u1_mb_type - u1_mb_threshold));
                    if(ret != OK) return ret;
                    ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
                    if(0 == ps_svc_cur_mb_info->u1_base_mode_flag)
                    {
                        ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
                    }
                }
                ps_parse_mb_data->u1_isI_mb = !ps_svc_cur_mb_info->u1_base_mode_flag;
            }
        }

        if(ps_dec->u1_enable_mb_info)
        {
            ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
                                        ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
        }
        if(u1_mbaff)
        {
            ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
        }

        if(ps_cur_mb_info->u1_topmb && u1_mbaff)
            uc_more_data_flag = 1;
        else
        {
            uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, ps_bitstrm);
            uc_more_data_flag = !uc_more_data_flag;
            COPYTHECONTEXT("Decode Sliceterm", !uc_more_data_flag);
        }

        if(u1_mbaff)
        {
            if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
            {
                return ERROR_EOB_FLUSHBITS_T;
            }
        }
        /* Next macroblock information */
        i2_cur_mb_addr++;
        u1_num_mbs++;
        u1_num_mbsNby2++;
        ps_parse_mb_data++;

        /****************************************************************/
        /* Check for End Of Row and other flags that determine when to  */
        /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for   */
        /* N-Mb                                                         */
        /****************************************************************/
        u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
        u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
        u1_slice_end = !uc_more_data_flag;
        u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || u1_slice_end;
        u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
        ps_cur_mb_info->u1_end_of_slice = u1_slice_end;

        if(u1_decode_nmb)
        {
            ret = ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
            u1_num_mbsNby2 = 0;
            ps_parse_mb_data = ps_dec->ps_parse_mb_data;
            ps_dec->ps_part = ps_dec->ps_parse_part_params;
            if(ret != OK) return ret;
        }

        if(u1_decode_nmb)
        {
            if(ps_dec->u1_separate_parse)
            {
                ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
                                     u1_end_of_row);
                ps_dec->ps_nmb_info += u1_num_mbs;
                ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
            }
            else
            {
                ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
                                                              u1_num_mbs_next, u1_tfr_n_mb,
                                                              u1_end_of_row);
                if(ret != OK) return ret;
            }
            ps_dec->u2_total_mbs_coded += u1_num_mbs;
            if(u1_tfr_n_mb) u1_num_mbs = 0;
            u1_mb_idx = u1_num_mbs;
            ps_dec->u1_mb_idx = u1_num_mbs;
        }
    }

    ps_dec->u4_num_mbs_cur_nmb = 0;
    ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);

    return ret;
}

/*****************************************************************************/
/*                                                                           */
/*  Function Name : isvcd_parse_inter_slice_data_cavlc_enh_lyr               */
/*                                                                           */
/*  Description   : This function parses cavlc syntax of a inter slice on    */
/*                  N MB basis.                                              */
/*                                                                           */
/*  Inputs        : ps_dec                                                   */
/*                  sliceparams                                              */
/*                  firstMbInSlice                                           */
/*                                                                           */
/*  Processing    : 1. After parsing syntax for N MBs those N MBs are        */
/*                     decoded till the end of slice.                        */
/*                  2. MV prediction and DMA happens on a N/2 MB basis.      */
/*                                                                           */
/*  Returns       : 0                                                        */
/*                                                                           */
/*  Issues        : <List any issues or problems with this function>         */
/*                                                                           */
/*  Revision History:                                                        */
/*                                                                           */
/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
/*         09 06 2021   Kishore             Draft                            */
/*                                                                           */
/*****************************************************************************/

WORD32 isvcd_parse_inter_slice_data_cavlc_enh_lyr(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
                                                  dec_slice_params_t *ps_slice,
                                                  UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    UWORD32 uc_more_data_flag;
    WORD32 i2_cur_mb_addr;
    UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx;
    UWORD32 i2_mb_skip_run;
    UWORD32 u1_read_mb_type;

    UWORD32 u1_mbaff;
    UWORD32 u1_num_mbs_next, u1_end_of_row;
    const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
    UWORD32 u1_slice_end = 0;
    UWORD32 u1_tfr_n_mb = 0;
    UWORD32 u1_decode_nmb = 0;

    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;

    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;

    deblk_mb_t *ps_cur_deblk_mb;
    dec_mb_info_t *ps_cur_mb_info;
    dec_svc_mb_info_t *ps_svc_cur_mb_info;

    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data;
    UWORD32 u1_inter_mb_type;
    UWORD32 u1_deblk_mb_type;
    UWORD32 u1_mb_threshold;
    WORD32 ret = OK;

    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    /******************************************************/
    /* Initialisations specific to EB or EP slice           */
    /******************************************************/

    if(ps_slice->u1_slice_type == P_SLICE)
    {
        u1_inter_mb_type = P_MB;
        u1_deblk_mb_type = D_INTER_MB;
        u1_mb_threshold = 5;
    }
    else
    {
        u1_inter_mb_type = B_MB;
        u1_deblk_mb_type = D_B_SLICE;
        u1_mb_threshold = 23;
    }

    /******************************************************/
    /* Slice Level Initialisations                        */
    /******************************************************/
    ps_dec->u1_qp = ps_slice->u1_slice_qp;
    ih264d_update_qp(ps_dec, 0);
    u1_mb_idx = ps_dec->u1_mb_idx;
    u1_num_mbs = u1_mb_idx;
    u1_num_mbsNby2 = 0;
    u1_mbaff = ps_slice->u1_mbaff_frame_flag;
    i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
    i2_mb_skip_run = 0;
    uc_more_data_flag = 1;
    u1_read_mb_type = 0;

    while(!u1_slice_end)
    {
        UWORD8 u1_mb_type;

        ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;

        if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
        {
            break;
        }

        ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
        ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
        ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;

        ps_cur_mb_info->u1_Mux = 0;
        ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
        ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;

        ps_cur_mb_info->u1_end_of_slice = 0;

        /* Storing Default partition info */
        ps_parse_mb_data->u1_num_part = 1;
        ps_parse_mb_data->u1_isI_mb = 0;

        if((!i2_mb_skip_run) && (!u1_read_mb_type))
        {
            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;
            i2_mb_skip_run = ((1 << u4_ldz) + u4_word - 1);

            COPYTHECONTEXT("mb_skip_run", i2_mb_skip_run);
            uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
            u1_read_mb_type = uc_more_data_flag;
        }

        /***************************************************************/
        /* Get the required information for decoding of MB             */
        /* mb_x, mb_y , neighbour availablity,                         */
        /***************************************************************/
        ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run);
        ps_svc_cur_mb_info->u1_crop_window_flag =
            *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
              (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
        /***************************************************************/
        /* Set the deblocking parameters for this MB                   */
        /***************************************************************/
        if(ps_dec->u4_app_disable_deblk_frm == 0)
            ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
                                             ps_dec->u1_mb_ngbr_availablity,
                                             ps_dec->u1_cur_mb_fld_dec_flag);

        if(i2_mb_skip_run)
        {
            /* Set appropriate flags in ps_cur_mb_info and ps_dec */
            ps_dec->i1_prev_mb_qp_delta = 0;
            ps_dec->u1_sub_mb_num = 0;
            ps_cur_mb_info->u1_mb_type = MB_SKIP;
            ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16;
            ps_cur_mb_info->u1_cbp = 0;
            ps_svc_cur_mb_info->u1_base_mode_flag = 0;
            ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0;
            ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0;
            ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;

            {
                /* Storing Skip partition info */
                parse_part_params_t *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++;
            }

            /* Update Nnzs */
            ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);

            ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
            ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;

            if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
            {
                ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
            }
            i2_mb_skip_run--;
        }
        else
        {
            UWORD32 u4_word, u4_ldz, u4_temp;

            ps_svc_cur_mb_info->u1_base_mode_flag = 0;
            if(ps_svc_cur_mb_info->u1_crop_window_flag &&
               ps_svc_slice_params->u1_adaptive_base_mode_flag)
            {
                ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_get_bit_h264(ps_bitstrm);
                COPYTHECONTEXT("SVC :u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
            }
            else if(ps_svc_cur_mb_info->u1_crop_window_flag)
            {
                ps_svc_cur_mb_info->u1_base_mode_flag =
                    ps_svc_slice_params->u1_default_base_mode_flag;
            }

            if(!ps_svc_cur_mb_info->u1_base_mode_flag)
            {
                UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;

                u1_read_mb_type = 0;
                /**************************************************************/
                /* Macroblock Layer Begins, Decode the u1_mb_type              */
                /**************************************************************/
                {
                    /***************************************************************/
                    /* 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_temp = ((1 << u4_ldz) + u4_word - 1);

                    if(u4_temp > (UWORD32) (25 + u1_mb_threshold)) return ERROR_MB_TYPE;
                    u1_mb_type = u4_temp;
                    COPYTHECONTEXT("u1_mb_type", u1_mb_type);
                }
                ps_cur_mb_info->u1_mb_type = u1_mb_type;
            }
            else
            {
                /* default intialization for Base mode flag : reserved */
                ps_dec->ps_part += MAX_NUM_MB_PART;
                u1_read_mb_type = 0;
                ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0;
                ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0;
                ps_cur_mb_info->u1_mb_type = MB_INFER;
                ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
                if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
                {
                    ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
                }

                /*SVC EXT needs to update incropwindow*/
                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_cur_mb_info->u1_residual_prediction_flag);
                }
                else
                {
                    /*residual flag inference code */
                    if(1 == ps_svc_cur_mb_info->u1_crop_window_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;
                    }
                }
            }

            /**************************************************************/
            /* Parse Macroblock data                                      */
            /**************************************************************/
            u1_mb_type = ps_cur_mb_info->u1_mb_type;
            if(u1_mb_type < u1_mb_threshold)
            {
                ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;

                ret = ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext(
                    ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, u1_num_mbs, u1_num_mbsNby2);
                if(ret != OK) return ret;
                ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;

                if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
                {
                    ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
                }
            }
            else
            {
                /* Storing Intra partition info */
                ps_parse_mb_data->u1_num_part = 0;

                if((25 + u1_mb_threshold) == u1_mb_type)
                {
                    /* I_PCM_MB */
                    ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
                    ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
                    if(ret != OK) return ret;
                    ps_dec->u1_qp = 0;
                    ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
                }
                else
                {
                    ret =
                        isvcd_parse_imb_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
                                              u1_num_mbs, (UWORD8) (u1_mb_type - u1_mb_threshold));
                    if(ret != OK) return ret;

                    if(0 == ps_svc_cur_mb_info->u1_base_mode_flag)
                    {
                        ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
                    }
                }
                ps_parse_mb_data->u1_isI_mb = !ps_svc_cur_mb_info->u1_base_mode_flag;
            }
            uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
        }
        ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;

        if(ps_dec->u1_enable_mb_info)
        {
            ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
                                        ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
        }
        if(u1_mbaff)
        {
            ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
            if(!uc_more_data_flag && !i2_mb_skip_run && (0 == (i2_cur_mb_addr & 1)))
            {
                return ERROR_EOB_FLUSHBITS_T;
            }
        }
        /**************************************************************/
        /* Get next Macroblock address                                */
        /**************************************************************/
        i2_cur_mb_addr++;
        u1_num_mbs++;
        u1_num_mbsNby2++;
        ps_parse_mb_data++;

        /****************************************************************/
        /* Check for End Of Row and other flags that determine when to  */
        /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for   */
        /* N-Mb                                                         */
        /****************************************************************/
        u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
        u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
        u1_slice_end = (!(uc_more_data_flag || i2_mb_skip_run));
        u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || u1_slice_end;
        u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
        ps_cur_mb_info->u1_end_of_slice = u1_slice_end;

        if(u1_decode_nmb)
        {
            ret = ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
            u1_num_mbsNby2 = 0;
            ps_parse_mb_data = ps_dec->ps_parse_mb_data;
            ps_dec->ps_part = ps_dec->ps_parse_part_params;
            if(ret != OK) return ret;
        }

        if(u1_decode_nmb)
        {
            if(ps_dec->u1_separate_parse)
            {
                ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
                                     u1_end_of_row);
                ps_dec->ps_nmb_info += u1_num_mbs;
                ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
            }
            else
            {
                ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
                                                              u1_num_mbs_next, u1_tfr_n_mb,
                                                              u1_end_of_row);
                if(ret != OK) return ret;
            }
            ps_dec->u2_total_mbs_coded += u1_num_mbs;
            if(u1_tfr_n_mb) u1_num_mbs = 0;
            u1_mb_idx = u1_num_mbs;
            ps_dec->u1_mb_idx = u1_num_mbs;
        }
    }

    ps_dec->u4_num_mbs_cur_nmb = 0;
    ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);

    return ret;
}

/*!
**************************************************************************
* \if Function name : ih264d_parse_pmb_cabac_svc \endif
*
* \brief
*    This function parses CABAC syntax of a P MB.
*
* \return
*    0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_pmb_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, UWORD8 u1_mb_num,
                             UWORD8 u1_num_mbsNby2)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;

    UWORD32 u1_num_mb_part;
    UWORD32 uc_sub_mb;
    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data + u1_num_mbsNby2;
    WORD8 *pi1_ref_idx = ps_parse_mb_data->i1_ref_idx[0];
    const UWORD8 *pu1_num_mb_part = (const UWORD8 *) gau1_ih264d_num_mb_part;
    const UWORD32 u1_mb_type = ps_cur_mb_info->u1_mb_type;
    UWORD8 *pu1_col_info = ps_parse_mb_data->u1_col_info;
    UWORD32 u1_mb_mc_mode = u1_mb_type;
    ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
    decoding_envirnoment_t *ps_cab_env = &ps_dec->s_cab_dec_env;
    dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
    UWORD32 u4_sub_mb_pack = 0;
    WORD32 ret;

    UWORD8 u1_no_submb_part_size_lt8x8_flag = 1;
    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;

    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;
    p_curr_ctxt->u1_mb_type = CAB_P;
    ps_cur_mb_info->u1_mb_mc_mode = u1_mb_type;
    uc_sub_mb = ((u1_mb_type == PRED_8x8) | (u1_mb_type == PRED_8x8R0));

    /* Reading the subMB type */
    if(uc_sub_mb)
    {
        UWORD8 u1_colz = (PRED_8x8 << 6);
        u1_mb_mc_mode = 0;
        {
            UWORD8 u1_sub_mb_mode;
            u1_sub_mb_mode =
                ih264d_parse_submb_type_cabac(0, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t);
            if(u1_sub_mb_mode > 3) return ERROR_SUB_MB_TYPE;

            u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
            /* Storing collocated information */
            *pu1_col_info++ = u1_colz | ((UWORD8) (u1_sub_mb_mode << 4));
            COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
            /* check if Motion compensation is done below 8x8 */
            if(u1_sub_mb_mode != P_L0_8x8)
            {
                u1_no_submb_part_size_lt8x8_flag = 0;
            }
        }
        {
            UWORD8 u1_sub_mb_mode;
            u1_sub_mb_mode =
                ih264d_parse_submb_type_cabac(0, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t);
            if(u1_sub_mb_mode > 3) return ERROR_SUB_MB_TYPE;

            u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
            /* Storing collocated information */
            *pu1_col_info++ = u1_colz | ((UWORD8) (u1_sub_mb_mode << 4));
            COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
            /* check if Motion compensation is done below 8x8 */
            if(u1_sub_mb_mode != P_L0_8x8)
            {
                u1_no_submb_part_size_lt8x8_flag = 0;
            }
        }
        {
            UWORD8 u1_sub_mb_mode;
            u1_sub_mb_mode =
                ih264d_parse_submb_type_cabac(0, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t);
            if(u1_sub_mb_mode > 3) return ERROR_SUB_MB_TYPE;

            u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
            /* Storing collocated information */
            *pu1_col_info++ = u1_colz | ((UWORD8) (u1_sub_mb_mode << 4));
            COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
            /* check if Motion compensation is done below 8x8 */
            if(u1_sub_mb_mode != P_L0_8x8)
            {
                u1_no_submb_part_size_lt8x8_flag = 0;
            }
        }
        {
            UWORD8 u1_sub_mb_mode;
            u1_sub_mb_mode =
                ih264d_parse_submb_type_cabac(0, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t);
            if(u1_sub_mb_mode > 3) return ERROR_SUB_MB_TYPE;

            u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
            /* Storing collocated information */
            *pu1_col_info++ = u1_colz | ((UWORD8) (u1_sub_mb_mode << 4));
            COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
            /* check if Motion compensation is done below 8x8 */
            if(u1_sub_mb_mode != P_L0_8x8)
            {
                u1_no_submb_part_size_lt8x8_flag = 0;
            }
        }
        u1_num_mb_part = 4;
    }
    else
    {
        u1_num_mb_part = pu1_num_mb_part[u1_mb_type];
        /* Storing collocated Mb and SubMb mode information */
        *pu1_col_info++ = (u1_mb_type << 6);
        if(u1_mb_type) *pu1_col_info++ = (u1_mb_type << 6);
    }

    /*Adding code to get Motion Prediction Flags*/
    {
        UWORD8 uc_i;
        UWORD8 *pu1_motion_pred_flag_l0;
        UWORD8 u1_mvp_flag;
        WORD8 *pi1_top_ref_idx_ctx_inc_arr = p_curr_ctxt->i1_ref_idx;
        WORD8 *pi1_left_ref_idx_ctxt_inc = ps_dec->pi1_left_ref_idx_ctxt_inc;
        UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
        UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
        UWORD8 uc_num_ref_idx_l0_active_minus1 =
            (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] << (u1_mbaff & uc_field)) - 1;
        pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0];
        *pu1_motion_pred_flag_l0 = 0;

        if(ps_svc_cur_mb_info->u1_crop_window_flag &&
           ps_svc_slice_params->u1_adaptive_motion_prediction_flag)
        {
            for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
            {
                /*usage of bins and ctxt check*/
                u1_mvp_flag = ih264d_decode_bin(0, ps_svc_lyr_dec->ps_motion_prediction_flag_l0,
                                                ps_bitstrm, ps_cab_env);
                COPYTHECONTEXT("SVC ext: ps_motion_prediction_flag_l0", u1_mvp_flag);

                *pu1_motion_pred_flag_l0 |= (u1_mvp_flag << uc_i);
                if(u1_mvp_flag)
                {
                    pi1_ref_idx[uc_i] = -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;
            if(ps_svc_slice_params->u1_default_motion_prediction_flag)
            {
                pi1_ref_idx[0] = -1;
                pi1_ref_idx[1] = -1;
                pi1_ref_idx[2] = -1;
                pi1_ref_idx[3] = -1;
            }
        }

        /* Decoding reference index 0: For simple profile the following   */
        /* conditions are always true (mb_field_decoding_flag == 0);      */
        /* (MbPartPredMode != PredL1)                                     */
        if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0))
        {
            /* force the routine to decode ref idx for each partition */
            /*SVC added motion_prediction_flag to force it to take it only for
             * !motion_pred_flag_l0*/

            ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, uc_num_ref_idx_l0_active_minus1,
                                             u1_mb_mc_mode, pi1_ref_idx, pi1_left_ref_idx_ctxt_inc,
                                             pi1_top_ref_idx_ctx_inc_arr, ps_cab_env, ps_bitstrm,
                                             ps_dec->p_ref_idx_t);
            if(ret != OK)
            {
                return ret;
            }
        }
        else
        {
            /* When there exists only a single frame to predict from */
            pi1_left_ref_idx_ctxt_inc[0] = 0;
            pi1_left_ref_idx_ctxt_inc[1] = 0;
            pi1_top_ref_idx_ctx_inc_arr[0] = 0;
            pi1_top_ref_idx_ctx_inc_arr[1] = 0;
            *((UWORD32 *) pi1_ref_idx) = 0;
        }
    }

    {
        UWORD8 u1_p_idx, uc_i;
        parse_part_params_t *ps_part = ps_dec->ps_part;
        UWORD8 u1_sub_mb_mode, u1_num_subpart, u1_mb_part_width, u1_mb_part_height;
        UWORD8 u1_sub_mb_num;
        const UWORD8 *pu1_top_left_sub_mb_indx;
        mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
        UWORD16 u2_sub_mb_num_pack = 0x028A;

        /* Loading the table pointers */
        const UWORD8 *pu1_mb_partw = (const UWORD8 *) gau1_ih264d_mb_partw;
        const UWORD8 *pu1_mb_parth = (const UWORD8 *) gau1_ih264d_mb_parth;
        const UWORD8 *pu1_sub_mb_indx_mod =
            (const UWORD8 *) (gau1_ih264d_submb_indx_mod) + (uc_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;

        /*********************************************************/
        /* default initialisations for condition (uc_sub_mb == 0) */
        /* i.e. all are subpartitions of 8x8                     */
        /*********************************************************/
        u1_sub_mb_mode = 0;
        u1_num_subpart = 1;
        u1_mb_part_width = pu1_mb_partw[u1_mb_type];
        u1_mb_part_height = pu1_mb_parth[u1_mb_type];
        pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_type << 1);
        u1_sub_mb_num = 0;

        /* Loop on number of partitions */
        for(uc_i = 0, u1_p_idx = 0; uc_i < u1_num_mb_part; uc_i++)
        {
            UWORD8 uc_j;
            if(uc_sub_mb)
            {
                u1_sub_mb_mode = u4_sub_mb_pack >> 24;
                u1_num_subpart = pu1_num_sub_mb_part[u1_sub_mb_mode];
                u1_mb_part_width = pu1_sub_mb_partw[u1_sub_mb_mode];
                u1_mb_part_height = pu1_sub_mb_parth[u1_sub_mb_mode];
                pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_sub_mb_mode << 1);
                u1_sub_mb_num = u2_sub_mb_num_pack >> 12;
                u4_sub_mb_pack <<= 8;
                u2_sub_mb_num_pack <<= 4;
            }
            /* Loop on Number of sub-partitions */
            for(uc_j = 0; uc_j < u1_num_subpart; uc_j++, pu1_top_left_sub_mb_indx++)
            {
                mv_pred_t *ps_mv;
                u1_sub_mb_num += *pu1_top_left_sub_mb_indx;
                ps_mv = ps_mv_start + u1_sub_mb_num;

                /* Storing Info for partitions */
                ps_part->u1_is_direct = PART_NOT_DIRECT;
                ps_part->u1_sub_mb_num = u1_sub_mb_num;
                ps_part->u1_partheight = u1_mb_part_height;
                ps_part->u1_partwidth = u1_mb_part_width;

                /* Increment partition Index */
                u1_p_idx++;
                ps_part++;

                ih264d_get_mvd_cabac(u1_sub_mb_num, 0, u1_mb_part_width, u1_mb_part_height, 1,
                                     ps_dec, ps_mv);
            }
        }
        ps_parse_mb_data->u1_num_part = u1_p_idx;
        ps_dec->ps_part = ps_part;
    }

    /* update incropwindow*/
    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_cur_mb_info->u1_residual_prediction_flag);
    }
    else
    {
        /*residual flag inference code */
        if(1 == ps_svc_cur_mb_info->u1_crop_window_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)
    {
        UWORD8 u1_cbp;
        /* Read the Coded block pattern */
        u1_cbp = (WORD8) ih264d_parse_ctx_cbp_cabac(ps_dec);
        COPYTHECONTEXT("coded_block_pattern", u1_cbp);
        ps_cur_mb_info->u1_cbp = u1_cbp;
        p_curr_ctxt->u1_cbp = u1_cbp;
        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;

        if(u1_cbp > 47) return ERROR_CBP;

        ps_cur_mb_info->u1_tran_form8x8 = 0;
        ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;

        /* Read the transform8x8 u4_flag if present */
        if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & 0xf) &&
           u1_no_submb_part_size_lt8x8_flag)
        {
            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);
            p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
            ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
        }
        else
        {
            p_curr_ctxt->u1_transform8x8_ctxt = 0;
        }

        /* 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 != 0)
            {
                ret = ih264d_update_qp(ps_dec, c_temp);
                if(ret != OK) return ret;
            }
        }
        else
            ps_dec->i1_prev_mb_qp_delta = 0;

        /*residual from 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_parse_pmb_cavlc \endif
 *
 * \brief
 *    This function parses CAVLC syntax of a P MB.
 *
 * \return
 *    0 on Success and Error code otherwise
 **************************************************************************
 */
WORD32 isvcd_parse_pmb_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, UWORD8 u1_mb_num,
                             UWORD8 u1_num_mbsNby2)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
    UWORD32 u1_num_mb_part;
    UWORD32 uc_sub_mb;
    dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
    UWORD32 *const pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
    UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
    parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data + u1_num_mbsNby2;
    WORD8 *pi1_ref_idx = ps_parse_mb_data->i1_ref_idx[0];
    const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
    const UWORD8 *pu1_num_mb_part = (const UWORD8 *) gau1_ih264d_num_mb_part;
    UWORD8 *pu1_col_info = ps_parse_mb_data->u1_col_info;
    UWORD32 u1_mb_type = ps_cur_mb_info->u1_mb_type;
    UWORD32 u4_sum_mb_mode_pack = 0;
    WORD32 ret;
    UWORD8 u1_no_submb_part_size_lt8x8_flag = 1;

    ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
    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 = u1_mb_type;
    uc_sub_mb = ((u1_mb_type == PRED_8x8) | (u1_mb_type == PRED_8x8R0));

    /* Reading the subMB type */
    if(uc_sub_mb)
    {
        WORD32 i;
        UWORD8 u1_colz = (PRED_8x8 << 6);

        for(i = 0; i < 4; i++)
        {
            UWORD32 ui_sub_mb_mode;

            // 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;
            ui_sub_mb_mode = ((1 << u4_ldz) + u4_word - 1);
            // Inlined ih264d_uev

            if(ui_sub_mb_mode > 3)
            {
                return ERROR_SUB_MB_TYPE;
            }
            else
            {
                u4_sum_mb_mode_pack = (u4_sum_mb_mode_pack << 8) | ui_sub_mb_mode;
                /* Storing collocated information */
                *pu1_col_info++ = u1_colz | (UWORD8) (ui_sub_mb_mode << 4);

                COPYTHECONTEXT("sub_mb_type", ui_sub_mb_mode);
            }

            /* check if Motion compensation is done below 8x8 */
            if(ui_sub_mb_mode != P_L0_8x8)
            {
                u1_no_submb_part_size_lt8x8_flag = 0;
            }
        }
        u1_num_mb_part = 4;
    }
    else
    {
        *pu1_col_info++ = (u1_mb_type << 6);
        if(u1_mb_type) *pu1_col_info++ = (u1_mb_type << 6);
        u1_num_mb_part = pu1_num_mb_part[u1_mb_type];
    }

    /*Adding code to get Motion Prediction Flags*/
    {
        /*free the scratch buffer once used*/
        UWORD8 uc_i;
        UWORD8 *pu1_motion_pred_flag_l0;
        UWORD8 u1_mvp_flag;
        UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
        UWORD8 uc_num_ref_idx_l0_active_minus1 =
            (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] << (u1_mbaff & uc_field)) - 1;

        pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0];
        *pu1_motion_pred_flag_l0 = 0;
        if(ps_svc_cur_mb_info->u1_crop_window_flag &&
           ps_svc_slice_params->u1_adaptive_motion_prediction_flag)
        {
            for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
            {
                /*usage of bins and ctxt check*/
                u1_mvp_flag = ih264d_get_bit_h264(ps_bitstrm);
                COPYTHECONTEXT("SVC ext: ps_motion_prediction_flag_l0", u1_mvp_flag);

                *pu1_motion_pred_flag_l0 |= (u1_mvp_flag << uc_i);
            }
        }
        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;
        }

        /* Decoding reference index 0: For simple profile the following   */
        /* conditions are always true (mb_field_decoding_flag == 0);      */
        /* (MbPartPredMode != PredL1)                                     */
        if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0))
        {
            if(1 == uc_num_ref_idx_l0_active_minus1)
                isvcd_parse_pmb_ref_index_cavlc_range1(u1_num_mb_part, ps_bitstrm, pi1_ref_idx,
                                                       uc_num_ref_idx_l0_active_minus1,
                                                       pu1_motion_pred_flag_l0);
            else
            {
                ret = isvcd_parse_pmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, pi1_ref_idx,
                                                      uc_num_ref_idx_l0_active_minus1,
                                                      pu1_motion_pred_flag_l0);
                if(ret != OK) return ret;
            }
        }
        else
        {
            /* When there exists only a single frame to predict from */
            UWORD8 uc_i;
            for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++) /* Storing Reference Idx Information */
                pi1_ref_idx[uc_i] = 0;
        }
    }

    {
        UWORD8 u1_p_idx, uc_i;
        parse_part_params_t *ps_part = ps_dec->ps_part;
        UWORD8 u1_sub_mb_mode, u1_num_subpart, u1_mb_part_width, u1_mb_part_height;
        UWORD8 u1_sub_mb_num;
        const UWORD8 *pu1_top_left_sub_mb_indx;
        mv_pred_t *ps_mv, *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
        /* Loading the table pointers */
        const UWORD8 *pu1_mb_partw = (const UWORD8 *) gau1_ih264d_mb_partw;
        const UWORD8 *pu1_mb_parth = (const UWORD8 *) gau1_ih264d_mb_parth;
        const UWORD8 *pu1_sub_mb_indx_mod =
            (const UWORD8 *) (gau1_ih264d_submb_indx_mod) + (uc_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;
        UWORD16 u2_sub_mb_num = 0x028A;

        /*********************************************************/
        /* default initialisations for condition (uc_sub_mb == 0) */
        /* i.e. all are subpartitions of 8x8                     */
        /*********************************************************/
        u1_sub_mb_mode = 0;
        u1_num_subpart = 1;
        u1_mb_part_width = pu1_mb_partw[u1_mb_type];
        u1_mb_part_height = pu1_mb_parth[u1_mb_type];
        pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_type << 1);
        u1_sub_mb_num = 0;

        /* Loop on number of partitions */
        for(uc_i = 0, u1_p_idx = 0; uc_i < u1_num_mb_part; uc_i++)
        {
            UWORD8 uc_j;
            if(uc_sub_mb)
            {
                u1_sub_mb_mode = u4_sum_mb_mode_pack >> 24;
                u1_num_subpart = pu1_num_sub_mb_part[u1_sub_mb_mode];
                u1_mb_part_width = pu1_sub_mb_partw[u1_sub_mb_mode];
                u1_mb_part_height = pu1_sub_mb_parth[u1_sub_mb_mode];
                pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_sub_mb_mode << 1);
                u1_sub_mb_num = u2_sub_mb_num >> 12;
                u4_sum_mb_mode_pack <<= 8;
                u2_sub_mb_num <<= 4;
            }
            /* Loop on Number of sub-partitions */
            for(uc_j = 0; uc_j < u1_num_subpart; uc_j++, pu1_top_left_sub_mb_indx++)
            {
                WORD16 i2_mvx, i2_mvy;
                u1_sub_mb_num += *pu1_top_left_sub_mb_indx;
                ps_mv = ps_mv_start + u1_sub_mb_num;

                /* Reading the differential Mv from the bitstream */
                // 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)
                        i2_mvx = (-(WORD32) u4_abs_val);
                    else
                        i2_mvx = (u4_abs_val);
                }
                // inlinined ih264d_sev
                COPYTHECONTEXT("MVD", i2_mvx);
                i2_mvy = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
                COPYTHECONTEXT("MVD", i2_mvy);

                /* Storing Info for partitions */
                ps_part->u1_is_direct = PART_NOT_DIRECT;
                ps_part->u1_sub_mb_num = u1_sub_mb_num;
                ps_part->u1_partheight = u1_mb_part_height;
                ps_part->u1_partwidth = u1_mb_part_width;

                /* Storing Mv residuals */
                ps_mv->i2_mv[0] = i2_mvx;
                ps_mv->i2_mv[1] = i2_mvy;

                /* Increment partition Index */
                u1_p_idx++;
                ps_part++;
            }
        }
        ps_parse_mb_data->u1_num_part = u1_p_idx;
        ps_dec->ps_part = ps_part;
    }

    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)
        {
            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)
    {
        UWORD32 u4_cbp;
        /* Read the Coded block pattern */
        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);

        if(u4_cbp > 47) return ERROR_CBP;

        u4_cbp = *((UWORD8 *) gau1_ih264d_cbp_inter + u4_cbp);
        COPYTHECONTEXT("coded_block_pattern", u4_cbp);
        ps_cur_mb_info->u1_cbp = u4_cbp;

        /* Read the transform8x8 u4_flag if present */
        if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & 0xf) &&
           u1_no_submb_part_size_lt8x8_flag)
        {
            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;
        }

        /* Read mb_qp_delta */
        if(u4_cbp)
        {
            WORD32 i_temp;
            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;
            }

            /*change to support 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
        {
            ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
        }
    }

    return OK;
}
/*!
 **************************************************************************
 * \if Function name : isvcd_mark_err_slice_skip \endif
 *
 * \brief
 *
 *
 * \return
 *    0 on Success and Error code otherwise
 **************************************************************************
 */
WORD32 isvcd_mark_err_slice_skip(svc_dec_lyr_struct_t *ps_svc_lyr_dec, WORD32 num_mb_skip,
                                 UWORD8 u1_is_idr_slice, UWORD16 u2_frame_num,
                                 pocstruct_t *ps_cur_poc, WORD32 prev_slice_err)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    WORD32 i2_cur_mb_addr;
    UWORD32 u1_num_mbs;
    UWORD32 u1_mb_idx = ps_dec->u1_mb_idx;
    UWORD32 i2_mb_skip_run;
    UWORD32 u1_num_mbs_next, u1_end_of_row;
    const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
    UWORD32 u1_slice_end;
    UWORD32 u1_tfr_n_mb;
    UWORD32 u1_decode_nmb;
    dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
    deblk_mb_t *ps_cur_deblk_mb;
    dec_mb_info_t *ps_cur_mb_info;
    dec_svc_mb_info_t *ps_svc_cur_mb_info;
    parse_pmbarams_t *ps_parse_mb_data;
    UWORD32 u1_inter_mb_type;
    UWORD32 u1_deblk_mb_type;
    UWORD32 u1_mbaff;
    parse_part_params_t *ps_part_info;
    WORD32 ret;
    UNUSED(u1_is_idr_slice);

    ps_svc_lyr_dec->u1_error_in_cur_frame = 1;
    if(ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC)
    {
        ih264d_err_pic_dispbuf_mgr(ps_dec);
        return 0;
    }

    if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag && (num_mb_skip & 1))
    {
        num_mb_skip++;
    }
    ps_dec->ps_dpb_cmds->u1_long_term_reference_flag = 0;
    if(prev_slice_err == 1)
    {
        /* first slice - missing/header corruption */
        ps_dec->ps_cur_slice->u2_frame_num = u2_frame_num;
        {
            WORD32 i, j, poc = 0;
            ps_dec->ps_cur_slice->u2_first_mb_in_slice = 0;
            ps_dec->pf_mvpred = ih264d_mvpred_nonmbaff;
            ps_dec->p_form_mb_part_info = ih264d_form_mb_part_info_bp;
            ps_dec->p_motion_compensate = ih264d_motion_compensate_bp;

            if(ps_dec->ps_cur_pic != NULL)
            {
                poc = ps_dec->ps_cur_pic->i4_poc;
                if(poc <= INT32_MAX - 2) poc += 2;
            }

            j = -1;
            for(i = 0; i < MAX_NUM_PIC_PARAMS; i++)
            {
                if(ps_dec->ps_pps[i].u1_is_valid == TRUE)
                {
                    if(ps_dec->ps_pps[i].ps_sps->u1_is_valid == TRUE)
                    {
                        j = i;
                        break;
                    }
                }
            }

            // if valid SPS PPS is not found return error
            if(j == -1)
            {
                return ERROR_INV_SLICE_HDR_T;
            }

            /* call ih264d_start_of_pic only if it was not called earlier*/
            if(ps_dec->u4_pic_buf_got == 0)
            {
                // initialize slice params required by isvcd_start_of_pic to valid values
                ps_dec->ps_cur_slice->u1_slice_type = P_SLICE;
                ps_dec->ps_cur_slice->u1_nal_ref_idc = 1;
                ps_dec->ps_cur_slice->u1_nal_unit_type = 1;
                ret = isvcd_start_of_pic(ps_svc_lyr_dec, poc, ps_cur_poc,
                                         ps_dec->ps_cur_slice->u2_frame_num, &ps_dec->ps_pps[j]);

                if(ret != OK)
                {
                    return ret;
                }
                /*inter layer buffer intialization */
                ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb =
                    ps_svc_lyr_dec->ps_inter_lyr_mb_prms_frm_start;
                ps_svc_lyr_dec->ps_il_pred_mv_bank_buf_cur_mb =
                    ps_svc_lyr_dec->ps_il_pred_mv_bank_buf_base;
            }

            ps_dec->ps_ref_pic_buf_lx[0][0]->u1_pic_buf_id = 0;
            ps_dec->u4_output_present = 0;

            {
                ih264d_get_next_display_field(ps_dec, ps_dec->ps_out_buffer, &(ps_dec->s_disp_op));
                /* If error code is non-zero then there is no buffer available for
                display, hence avoid format conversion */

                if(0 != ps_dec->s_disp_op.u4_error_code)
                {
                    ps_dec->u4_output_present = 0;
                    ps_dec->u4_fmt_conv_cur_row = ps_dec->s_disp_frame_info.u4_y_ht;
                }
                else
                    ps_dec->u4_output_present = 1;
            }

            if(ps_dec->u1_separate_parse == 1)
            {
#ifdef KEEP_THREADS_ACTIVE
                ret = ithread_mutex_lock(ps_dec->apv_proc_start_mutex[0]);
                RETURN_IF((ret != IV_SUCCESS), ret);

                ps_dec->ai4_process_start[0] = PROC_START;
                ret = ithread_cond_signal(ps_dec->apv_proc_start_condition[0]);
                RETURN_IF((ret != IV_SUCCESS), ret);

                ret = ithread_mutex_unlock(ps_dec->apv_proc_start_mutex[0]);
                RETURN_IF((ret != IV_SUCCESS), ret);
#endif
#ifdef KEEP_THREADS_ACTIVE
                if(ps_dec->u4_bs_deblk_thread_created)
                {
                    ret = ithread_mutex_lock(ps_dec->apv_proc_start_mutex[1]);
                    RETURN_IF((ret != IV_SUCCESS), ret);

                    ps_dec->ai4_process_start[1] = PROC_START;
                    ret = ithread_cond_signal(ps_dec->apv_proc_start_condition[1]);
                    RETURN_IF((ret != IV_SUCCESS), ret);

                    ret = ithread_mutex_unlock(ps_dec->apv_proc_start_mutex[1]);
                    RETURN_IF((ret != IV_SUCCESS), ret);
                }
#endif
            }
        }
    }
    else
    {
        // Middle / last slice
        dec_slice_struct_t *ps_parse_cur_slice;
        ps_parse_cur_slice = ps_dec->ps_dec_slice_buf + ps_dec->u2_cur_slice_num;

        if(ps_dec->u1_slice_header_done && ps_parse_cur_slice == ps_dec->ps_parse_cur_slice)
        {
            // Slice data corrupted
            // in the case of mbaff, conceal from the even mb.
            if((ps_dec->ps_cur_slice->u1_mbaff_frame_flag) && (ps_dec->u4_num_mbs_cur_nmb & 1))
            {
                ps_dec->u4_num_mbs_cur_nmb = ps_dec->u4_num_mbs_cur_nmb - 1;
                ps_dec->u2_cur_mb_addr--;
            }

            u1_num_mbs = ps_dec->u4_num_mbs_cur_nmb;
            if(u1_num_mbs)
            {
                ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs - 1;
            }
            else
            {
                if(ps_dec->u1_separate_parse)
                {
                    ps_cur_mb_info = ps_dec->ps_nmb_info;
                }
                else
                {
                    ps_cur_mb_info = ps_dec->ps_nmb_info + ps_dec->u4_num_mbs_prev_nmb - 1;
                }
            }

            ps_dec->u2_mby = ps_cur_mb_info->u2_mby;
            ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx;
            ps_dec->u1_mb_ngbr_availablity = ps_cur_mb_info->u1_mb_ngbr_availablity;

            if(u1_num_mbs)
            {
                // Going back 1 mb
                ps_dec->pv_parse_tu_coeff_data = ps_dec->pv_prev_mb_parse_tu_coeff_data;
                ps_dec->u2_cur_mb_addr--;
                ps_dec->i4_submb_ofst -= SUB_BLK_SIZE;

                // Parse/decode N-MB left unparsed
                if(ps_dec->u1_pr_sl_type == P_SLICE || ps_dec->u1_pr_sl_type == B_SLICE)
                {
                    if((ps_dec->i4_submb_ofst - ((WORD32) ((u1_num_mbs - u1_mb_idx) << 4))) < 0)
                    {
                        ps_dec->i4_submb_ofst = ((u1_num_mbs - u1_mb_idx) << 4);
                    }

                    ret = ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
                    ps_dec->ps_part = ps_dec->ps_parse_part_params;
                    if(ret != OK) return ret;
                }

                u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
                u1_end_of_row =
                    (!u1_num_mbs_next) &&
                    (!(ps_dec->ps_cur_slice->u1_mbaff_frame_flag && (u1_num_mbs & 0x01)));
                u1_slice_end = 1;
                u1_tfr_n_mb = 1;
                ps_cur_mb_info->u1_end_of_slice = u1_slice_end;

                if(ps_dec->u1_separate_parse)
                {
                    ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
                                         u1_tfr_n_mb, u1_end_of_row);
                    ps_dec->ps_nmb_info += u1_num_mbs;
                    ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
                }
                else
                {
                    ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
                                                u1_tfr_n_mb, u1_end_of_row);
                }
                ps_dec->u2_total_mbs_coded += u1_num_mbs;
                ps_dec->u1_mb_idx = 0;
                ps_dec->u4_num_mbs_cur_nmb = 0;
            }

            if(ps_dec->u2_total_mbs_coded >= ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs)
            {
                ps_dec->u1_pic_decode_done = 1;
                return 0;
            }

            /* Inserting new slice only if the current slice has atleast 1 MB*/
            if(ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice <
               (UWORD32) (ps_dec->u2_total_mbs_coded >> ps_slice->u1_mbaff_frame_flag))
            {
                ps_dec->i2_prev_slice_mbx = ps_dec->u2_mbx;
                ps_dec->i2_prev_slice_mby = ps_dec->u2_mby;
                ps_dec->u2_cur_slice_num++;
                ps_dec->ps_parse_cur_slice++;
            }
        }
        else
        {
            // Slice missing / header corrupted
            ps_dec->ps_parse_cur_slice = ps_dec->ps_dec_slice_buf + ps_dec->u2_cur_slice_num;
        }
    }

    /******************************************************/
    /* Initializations to new slice                       */
    /******************************************************/
    {
        WORD32 num_entries;
        WORD32 size;
        UWORD8 *pu1_buf;

        num_entries = MAX_FRAMES;
        if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && (0 == ps_dec->i4_display_delay))
        {
            num_entries = 1;
        }
        num_entries = ((2 * num_entries) + 1);
        num_entries *= 2;

        size = num_entries * sizeof(void *);
        size += PAD_MAP_IDX_POC * sizeof(void *);

        pu1_buf = (UWORD8 *) ps_dec->pv_map_ref_idx_to_poc_buf;
        pu1_buf += size * ps_dec->u2_cur_slice_num;
        ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc = (volatile void **) pu1_buf;
    }
    u1_mbaff = ps_slice->u1_mbaff_frame_flag;
    ps_dec->ps_cur_slice->u2_first_mb_in_slice = ps_dec->u2_total_mbs_coded >> u1_mbaff;
    ps_dec->ps_cur_slice->i1_slice_alpha_c0_offset = 0;
    ps_dec->ps_cur_slice->i1_slice_beta_offset = 0;

    if(ps_dec->ps_cur_slice->u1_field_pic_flag)
        ps_dec->u2_prv_frame_num = ps_dec->ps_cur_slice->u2_frame_num;

    ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice = ps_dec->u2_total_mbs_coded >> u1_mbaff;
    ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd;

    if(ps_dec->u1_separate_parse)
    {
        ps_dec->ps_parse_cur_slice->pv_tu_coeff_data_start = ps_dec->pv_parse_tu_coeff_data;
    }
    else
    {
        ps_dec->pv_proc_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
    }

    /******************************************************/
    /* Initializations specific to P slice                */
    /******************************************************/
    u1_inter_mb_type = P_MB;
    u1_deblk_mb_type = D_INTER_MB;

    ps_dec->ps_cur_slice->u1_slice_type = P_SLICE;
    ps_dec->ps_parse_cur_slice->slice_type = P_SLICE;
    ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb;
    ps_dec->ps_part = ps_dec->ps_parse_part_params;
    ps_dec->u2_mbx =
        (MOD(ps_dec->ps_cur_slice->u2_first_mb_in_slice - 1, ps_dec->u2_frm_wd_in_mbs));
    ps_dec->u2_mby =
        (DIV(ps_dec->ps_cur_slice->u2_first_mb_in_slice - 1, ps_dec->u2_frm_wd_in_mbs));
    ps_dec->u2_mby <<= u1_mbaff;

    /******************************************************/
    /* Parsing / decoding the slice                       */
    /******************************************************/
    ret = isvcd_parse_interlayer_resamp_func_init(ps_svc_lyr_dec,
                                                  ps_dec->ps_cur_slice->u2_first_mb_in_slice);
    ps_dec->u1_slice_header_done = 2;

    ps_dec->u1_qp = ps_slice->u1_slice_qp;
    ih264d_update_qp(ps_dec, 0);
    u1_mb_idx = ps_dec->u1_mb_idx;
    ps_parse_mb_data = ps_dec->ps_parse_mb_data;
    u1_num_mbs = u1_mb_idx;
    u1_slice_end = 0;
    u1_tfr_n_mb = 0;
    u1_decode_nmb = 0;
    i2_cur_mb_addr = ps_dec->u2_total_mbs_coded;
    i2_mb_skip_run = num_mb_skip;
    if(0 == ps_dec->u2_total_mbs_coded)
    {
        ps_dec->ps_cur_mb_row = ps_dec->ps_nbr_mb_row;  //[0];
        // Increment by 2 ,so that left mb (mbaff decrements by 2)  will always be valid
        ps_dec->ps_cur_mb_row += 2;
        ps_dec->ps_top_mb_row = ps_dec->ps_nbr_mb_row;
        ps_dec->ps_top_mb_row +=
            ((ps_dec->u2_frm_wd_in_mbs + 2) << (1 - ps_dec->ps_cur_sps->u1_frame_mbs_only_flag));
        // Increment by 2 ,so that left mb (mbaff decrements by 2)  will always be valid
        ps_dec->ps_top_mb_row += 2;

        /* CHANGED CODE */
        ps_dec->ps_mv_cur = ps_dec->s_cur_pic.ps_mv;
        ps_dec->ps_mv_left = ps_dec->s_cur_pic.ps_mv;
        ps_dec->ps_mv_top = ps_dec->ps_mv_top_p[0];
        ps_dec->ps_deblk_mbn = ps_dec->ps_deblk_pic;
        ps_dec->ps_mv = ps_dec->s_cur_pic.ps_mv;
        ps_dec->ps_mv_bank_cur = ps_dec->s_cur_pic.ps_mv;
        ps_dec->pu1_col_zero_flag = ps_dec->s_cur_pic.pu1_col_zero_flag;
        ps_dec->ps_part = ps_dec->ps_parse_part_params;
        ps_dec->pf_mvpred_ref_tfr_nby2mb = isvcd_mv_pred_ref_tfr_nby2_epmb;
    }
    while(!u1_slice_end)
    {
        if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr) break;

        ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
        ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
        ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
        ps_cur_mb_info->u1_Mux = 0;
        ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
        ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
        ps_cur_mb_info->u1_end_of_slice = 0;

        /* Storing Default partition info */
        ps_parse_mb_data->u1_num_part = 1;
        ps_parse_mb_data->u1_isI_mb = 0;

        /**************************************************************/
        /* Get the required information for decoding of MB            */
        /**************************************************************/
        /* mb_x, mb_y, neighbor availablity, */
        if(u1_mbaff)
            ih264d_get_mb_info_cavlc_mbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run);
        else
            isvcd_get_mb_info_cavlc_nonmbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info,
                                             i2_mb_skip_run);

        {
            UWORD16 *pu2_res_luma_csbp;

            /*Pointer assignment for Residual NNZ */
            pu2_res_luma_csbp = ps_svc_lyr_dec->pu2_frm_res_luma_csbp + ps_cur_mb_info->u2_mbx;
            pu2_res_luma_csbp +=
                ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_res_luma_csbp_stride;
            *pu2_res_luma_csbp = 0;
            ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb =
                ps_svc_lyr_dec->ps_inter_lyr_mb_prms_frm_start + ps_cur_mb_info->u2_mbx +
                (ps_svc_lyr_dec->u2_inter_lyr_mb_prms_stride * (ps_cur_mb_info->u2_mby));
            ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->i1_mb_mode = SVC_INTER_MB;
            ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->i1_tx_size =
                ps_cur_mb_info->u1_tran_form8x8;
            ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->u2_luma_nnz = 0;
            ps_svc_lyr_dec->ps_inter_lyr_mb_prms_cur_mb->u1_chroma_nnz = 0;
        }

        /* Set the deblocking parameters for this MB */
        if(ps_dec->u4_app_disable_deblk_frm == 0)
        {
            ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
                                             ps_dec->u1_mb_ngbr_availablity,
                                             ps_dec->u1_cur_mb_fld_dec_flag);
        }

        /* Set appropriate flags in ps_cur_mb_info and ps_dec */
        ps_dec->i1_prev_mb_qp_delta = 0;
        ps_dec->u1_sub_mb_num = 0;
        ps_cur_mb_info->u1_mb_type = MB_SKIP;
        ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16;
        ps_cur_mb_info->u1_cbp = 0;

        /* set appropriat flags in svc cur MB info */
        ps_svc_cur_mb_info->u1_base_mode_flag = 0;
        ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;
        ps_svc_cur_mb_info->u1_crop_window_flag = 0;
        ps_svc_cur_mb_info->au1_motion_pred_flag[0] = 0;
        ps_svc_cur_mb_info->au1_motion_pred_flag[1] = 0;

        /* Storing Skip partition 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++;

        /* Update Nnzs */
        ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);

        ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
        ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;

        if(ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER)
        {
            ps_cur_deblk_mb->u1_deblocking_mode = MB_DISABLE_FILTERING;
        }

        i2_mb_skip_run--;
        ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;

        if(u1_mbaff)
        {
            ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
        }

        /**************************************************************/
        /* Get next Macroblock address                                */
        /**************************************************************/
        i2_cur_mb_addr++;
        u1_num_mbs++;
        ps_parse_mb_data++;

        /****************************************************************/
        /* Check for End Of Row and other flags that determine when to  */
        /* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for   */
        /* N-Mb                                                         */
        /****************************************************************/
        u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
        u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
        u1_slice_end = !i2_mb_skip_run;
        u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || u1_slice_end;
        u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
        ps_cur_mb_info->u1_end_of_slice = u1_slice_end;

        if(u1_decode_nmb)
        {
            if((ps_dec->i4_submb_ofst - ((WORD32) ((u1_num_mbs - u1_mb_idx) << 4))) < 0)
            {
                ps_dec->i4_submb_ofst = ((u1_num_mbs - u1_mb_idx) << 4);
            }

            ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
            ps_parse_mb_data = ps_dec->ps_parse_mb_data;
            ps_dec->ps_part = ps_dec->ps_parse_part_params;

            if(ps_dec->u1_separate_parse)
            {
                ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
                                     u1_end_of_row);
                ps_dec->ps_nmb_info += u1_num_mbs;
                ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
            }
            else
            {
                if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
                {
                    ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
                                                u1_tfr_n_mb, u1_end_of_row);
                }
                else
                {
                    isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
                                                        u1_num_mbs_next, u1_tfr_n_mb,
                                                        u1_end_of_row);
                }
            }
            ps_dec->u2_total_mbs_coded += u1_num_mbs;
            if(u1_tfr_n_mb) u1_num_mbs = 0;
            u1_mb_idx = u1_num_mbs;
            ps_dec->u1_mb_idx = u1_num_mbs;
        }
    }

    ps_dec->u4_num_mbs_cur_nmb = 0;
    ps_dec->ps_cur_slice->u4_mbs_in_slice =
        i2_cur_mb_addr - ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice;

    H264_DEC_DEBUG_PRINT("Mbs in slice: %d\n", ps_dec->ps_cur_slice->u4_mbs_in_slice);

    /* incremented here only if first slice is inserted */
    if(ps_dec->u4_first_slice_in_pic != 0)
    {
        ps_dec->ps_parse_cur_slice++;
        ps_dec->u2_cur_slice_num++;
    }

    ps_dec->i2_prev_slice_mbx = ps_dec->u2_mbx;
    ps_dec->i2_prev_slice_mby = ps_dec->u2_mby;

    if(ps_dec->u2_total_mbs_coded >= ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs)
    {
        ps_dec->u1_pic_decode_done = 1;
    }

    return 0;
}
/*!
**************************************************************************
* \if Function name : isvcd_parse_interlayer_resamp_func_init \endif

* \brief
*    This function initilizes default values for svcd inter layer func.
*
* \return
*    0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_interlayer_resamp_func_init(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
                                               UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
    WORD32 ret = OK;
    if(ps_svc_lyr_dec->u1_res_init_done == 1)
        return ret;

    if(TARGET_LAYER != ps_svc_lyr_dec->u1_layer_identifier)
    {
        ps_slice->u1_disable_dblk_filter_idc = ps_svc_lyr_dec->u1_inter_lyr_disable_dblk_filter_idc;
        ps_slice->i1_slice_alpha_c0_offset = ps_svc_lyr_dec->i1_inter_lyr_slice_alpha_c0_offset;
        ps_slice->i1_slice_beta_offset = ps_svc_lyr_dec->i1_inter_lyr_slice_beta_offset;
    }

    if(0 == u2_first_mb_in_slice)
    {
        ret = isvcd_populate_res_prms(ps_svc_lyr_dec);
        if(ret != OK) return NOT_OK;
        isvcd_crop_wnd_flag_res_int(ps_svc_lyr_dec);
        ret = isvcd_comp_mode_mv_res_init(ps_svc_lyr_dec);
        if(ret != OK) return NOT_OK;
        ret = isvcd_ii_pred_res_init(ps_svc_lyr_dec);
        if(ret != OK) return NOT_OK;
        ret = isvcd_intra_resamp_res_init(ps_svc_lyr_dec);
        if(ret != OK) return NOT_OK;
        ret = isvcd_residual_samp_res_init(ps_svc_lyr_dec);
        if(ret != OK) return NOT_OK;

        ps_svc_lyr_dec->u1_res_init_done = 1;
    }

    return ret;
}

/*!
**************************************************************************
* \if Function name : isvcd_decode_pslice \endif
*
* \brief
*    Decodes a P Slice
*
*
* \return
*    0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_pslice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
{
    dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
    dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
    dec_slice_params_t *ps_cur_slice = ps_dec->ps_cur_slice;
    dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
    UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
    UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
    UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
    UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;
    UWORD64 u8_ref_idx_l0;
    UWORD32 u4_temp;
    WORD32 i_temp;
    WORD32 ret;
    WORD64 i8_temp;

    /*--------------------------------------------------------------------*/
    /* Read remaining contents of the slice header                        */
    /*--------------------------------------------------------------------*/
    {
        WORD8 *pi1_buf;
        WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv;
        WORD32 *pi4_mv = (WORD32 *) pi2_mv;
        WORD16 *pi16_refFrame;

        pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame;
        pi16_refFrame = (WORD16 *) pi1_buf;
        *pi4_mv = 0;
        *(pi4_mv + 1) = 0;
        *pi16_refFrame = OUT_OF_RANGE_REF;
        ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8) -1;
        ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8) -1;
    }

    ps_cur_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(ps_bitstrm);
    COPYTHECONTEXT("SH: num_ref_idx_override_flag",
                   ps_cur_slice->u1_num_ref_idx_active_override_flag);

    u8_ref_idx_l0 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0];
    if(ps_cur_slice->u1_num_ref_idx_active_override_flag)
    {
        u8_ref_idx_l0 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + (UWORD64) 1;
    }

    {
        UWORD8 u1_max_ref_idx = H264_MAX_REF_PICS << u1_field_pic_flag;
        if(u8_ref_idx_l0 >= u1_max_ref_idx)
        {
            return ERROR_NUM_REF;
        }
        ps_cur_slice->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_ref_idx_l0;
        COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1",
                       ps_cur_slice->u1_num_ref_idx_lx_active[0] - 1);
    }

    {
        UWORD8 uc_refIdxReFlagL0 = ih264d_get_bit_h264(ps_bitstrm);
        COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0", uc_refIdxReFlagL0);

        ih264d_init_ref_idx_lx_p(ps_dec);
        /* Store the value for future slices in the same picture */
        ps_dec->u1_num_ref_idx_lx_active_prev = ps_cur_slice->u1_num_ref_idx_lx_active[0];

        /* Modified temporarily */
        if(uc_refIdxReFlagL0)
        {
            WORD8 ret;
            ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
            ret = ih264d_ref_idx_reordering(ps_dec, 0);
            if(ret == -1) return ERROR_REFIDX_ORDER_T;
            ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
        }
        else
            ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0];
    }
    /* Create refIdx to POC mapping */
    {
        void **pui_map_ref_idx_to_poc_lx0, **pui_map_ref_idx_to_poc_lx1;
        WORD8 idx;
        struct pic_buffer_t *ps_pic;

        pui_map_ref_idx_to_poc_lx0 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0;
        pui_map_ref_idx_to_poc_lx0[0] = 0;
        pui_map_ref_idx_to_poc_lx0++;
        for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
        {
            ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
            pui_map_ref_idx_to_poc_lx0[idx] = (ps_pic->pu1_buf1);
        }

        /* Bug Fix Deblocking */
        pui_map_ref_idx_to_poc_lx1 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1;
        pui_map_ref_idx_to_poc_lx1[0] = 0;

        if(u1_mbaff)
        {
            void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b;
            void **ppv_map_ref_idx_to_poc_lx_t1, **ppv_map_ref_idx_to_poc_lx_b1;
            ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L0;
            ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L0;
            ppv_map_ref_idx_to_poc_lx_t[0] = 0;
            ppv_map_ref_idx_to_poc_lx_t++;
            ppv_map_ref_idx_to_poc_lx_b[0] = 0;
            ppv_map_ref_idx_to_poc_lx_b++;
            idx = 0;
            for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
            {
                ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
                ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1);
                ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1);
                ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1;
                ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1;
                ppv_map_ref_idx_to_poc_lx_t += 2;
                ppv_map_ref_idx_to_poc_lx_b += 2;
            }
            ppv_map_ref_idx_to_poc_lx_t1 = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1;
            ppv_map_ref_idx_to_poc_lx_t1[0] = 0;
            ppv_map_ref_idx_to_poc_lx_b1 = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1;
            ppv_map_ref_idx_to_poc_lx_b1[0] = 0;
        }
    }
    if(ps_pps->u1_wted_pred_flag)
    {
        ret = ih264d_parse_pred_weight_table(ps_cur_slice, ps_bitstrm);
        if(ret != OK) return ret;

        ih264d_form_pred_weight_matrix(ps_dec);
        ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
    }
    else
    {
        ps_dec->ps_cur_slice->u2_log2Y_crwd = 0;
        ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
    }

    ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd;

    if(u1_mbaff && (u1_field_pic_flag == 0))
    {
        ih264d_convert_frm_mbaff_list(ps_dec);
    }

    /* G050 */
    if(ps_cur_slice->u1_nal_ref_idc != 0)
    {
        if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
        {
            dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
            dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
            UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;

            ps_pps->ps_sps = ps_dec->ps_cur_sps;
            if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
                ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;

            i_temp = ih264d_read_mmco_commands(ps_dec);

            ps_pps->ps_sps = ps_sps_tmp;
            ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;

            if(i_temp < 0)
            {
                return ERROR_DBP_MANAGER_T;
            }
            ps_dec->u4_bitoffset = i_temp;
        }
        else
            ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
    }
    /* G050 */

    if(ps_pps->u1_entropy_coding_mode == CABAC)
    {
        u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);

        if(u4_temp > MAX_CABAC_INIT_IDC)
        {
            return ERROR_INV_SLICE_HDR_T;
        }
        ps_cur_slice->u1_cabac_init_idc = u4_temp;
        COPYTHECONTEXT("SH: cabac_init_idc", ps_cur_slice->u1_cabac_init_idc);
    }

    /* Read slice_qp_delta */
    i8_temp = (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
    if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP))
    {
        return ERROR_INV_RANGE_QP_T;
    }
    ps_cur_slice->u1_slice_qp = (UWORD8) i8_temp;
    COPYTHECONTEXT("SH: slice_qp_delta",
                   (WORD8) (ps_cur_slice->u1_slice_qp - ps_pps->u1_pic_init_qp));

    if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
    {
        u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
        if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
        {
            return ERROR_INV_SLICE_HDR_T;
        }

        COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp);
        ps_cur_slice->u1_disable_dblk_filter_idc = u4_temp;
        if(u4_temp != 1)
        {
            i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
            if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
            {
                return ERROR_INV_SLICE_HDR_T;
            }
            ps_cur_slice->i1_slice_alpha_c0_offset = i_temp;
            COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
                           ps_cur_slice->i1_slice_alpha_c0_offset >> 1);

            i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
            if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
            {
                return ERROR_INV_SLICE_HDR_T;
            }
            ps_cur_slice->i1_slice_beta_offset = i_temp;
            COPYTHECONTEXT("SH: slice_beta_offset_div2", ps_cur_slice->i1_slice_beta_offset >> 1);
        }
        else
        {
            ps_cur_slice->i1_slice_alpha_c0_offset = 0;
            ps_cur_slice->i1_slice_beta_offset = 0;
        }
    }
    else
    {
        ps_cur_slice->u1_disable_dblk_filter_idc = 0;
        ps_cur_slice->i1_slice_alpha_c0_offset = 0;
        ps_cur_slice->i1_slice_beta_offset = 0;
    }

    ps_dec->u1_slice_header_done = 2;
    if(ps_pps->u1_entropy_coding_mode)
    {
        SWITCHOFFTRACE;
        SWITCHONTRACECABAC;
        ps_svc_lyr_dec->pf_parse_svc_inter_slice = isvcd_parse_inter_slice_data_cabac;
        ps_dec->pf_parse_inter_mb = ih264d_parse_pmb_cabac;
        ih264d_init_cabac_contexts(P_SLICE, ps_dec);

        if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
            ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
        else
            ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
    }
    else
    {
        SWITCHONTRACE;
        SWITCHOFFTRACECABAC;
        ps_svc_lyr_dec->pf_parse_svc_inter_slice = isvcd_parse_inter_slice_data_cavlc;
        ps_dec->pf_parse_inter_mb = ih264d_parse_pmb_cavlc;
        if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
        {
            ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
        }
        else
            ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
    }

    ps_dec->u1_B = 0;
    ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb;
    ret = ps_svc_lyr_dec->pf_parse_svc_inter_slice(ps_svc_lyr_dec, ps_cur_slice,
                                                   u2_first_mb_in_slice);
    if(ret != OK) return ret;

    return OK;
}