Code: WORD32 ih264d_start_of_pic(dec_struct_t *ps_dec,
                         WORD32 i4_poc,
 pocstruct_t *ps_temp_poc,
                         UWORD16 u2_frame_num,
 dec_pic_params_t *ps_pps)
{
 pocstruct_t *ps_prev_poc = &ps_dec->s_cur_pic_poc;
 pocstruct_t *ps_cur_poc = ps_temp_poc;

 pic_buffer_t *pic_buf;

 ivd_video_decode_op_t * ps_dec_output =
 (ivd_video_decode_op_t *)ps_dec->pv_dec_out;
 dec_slice_params_t *ps_cur_slice = ps_dec->ps_cur_slice;
 dec_seq_params_t *ps_seq = ps_pps->ps_sps;
    UWORD8 u1_bottom_field_flag = ps_cur_slice->u1_bottom_field_flag;
    UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;
 /* high profile related declarations */
 high_profile_tools_t s_high_profile;
    WORD32 ret;

    H264_MUTEX_LOCK(&ps_dec->process_disp_mutex);

    ps_prev_poc->i4_pic_order_cnt_lsb = ps_cur_poc->i4_pic_order_cnt_lsb;
    ps_prev_poc->i4_pic_order_cnt_msb = ps_cur_poc->i4_pic_order_cnt_msb;
    ps_prev_poc->i4_delta_pic_order_cnt_bottom =
                    ps_cur_poc->i4_delta_pic_order_cnt_bottom;
    ps_prev_poc->i4_delta_pic_order_cnt[0] =
                    ps_cur_poc->i4_delta_pic_order_cnt[0];
    ps_prev_poc->i4_delta_pic_order_cnt[1] =
                    ps_cur_poc->i4_delta_pic_order_cnt[1];
    ps_prev_poc->u1_bot_field = ps_dec->ps_cur_slice->u1_bottom_field_flag;
    ps_prev_poc->i4_prev_frame_num_ofst = ps_cur_poc->i4_prev_frame_num_ofst;
    ps_prev_poc->u2_frame_num = u2_frame_num;
    ps_dec->i1_prev_mb_qp_delta = 0;
    ps_dec->i1_next_ctxt_idx = 0;


    ps_dec->u4_nmb_deblk = 0;
 if(ps_dec->u4_num_cores == 1)
       ps_dec->u4_nmb_deblk = 1;



 if(ps_seq->u1_mb_aff_flag == 1)
 {
        ps_dec->u4_nmb_deblk = 0;
 if(ps_dec->u4_num_cores > 2)
            ps_dec->u4_num_cores = 2;
 }

        ps_dec->u4_use_intrapred_line_copy = 0;



 if (ps_seq->u1_mb_aff_flag == 0)
 {
        ps_dec->u4_use_intrapred_line_copy = 1;
 }

    ps_dec->u4_app_disable_deblk_frm = 0;
 /* If degrade is enabled, set the degrade flags appropriately */
 if(ps_dec->i4_degrade_type && ps_dec->i4_degrade_pics)
 {
        WORD32 degrade_pic;
        ps_dec->i4_degrade_pic_cnt++;
        degrade_pic = 0;

 /* If degrade is to be done in all frames, then do not check further */
 switch(ps_dec->i4_degrade_pics)
 {
 case 4:
 {
                degrade_pic = 1;
 break;
 }
 case 3:
 {
 if(ps_cur_slice->u1_slice_type != I_SLICE)
                    degrade_pic = 1;

 break;
 }
 case 2:
 {

 /* If pic count hits non-degrade interval or it is an islice, then do not degrade */
 if((ps_cur_slice->u1_slice_type != I_SLICE)
 && (ps_dec->i4_degrade_pic_cnt
 != ps_dec->i4_nondegrade_interval))
                    degrade_pic = 1;

 break;
 }
 case 1:
 {
 /* Check if the current picture is non-ref */
 if(0 == ps_cur_slice->u1_nal_ref_idc)
 {
                    degrade_pic = 1;
 }
 break;
 }

 }
 if(degrade_pic)
 {
 if(ps_dec->i4_degrade_type & 0x2)
                ps_dec->u4_app_disable_deblk_frm = 1;

 /* MC degrading is done only for non-ref pictures */
 if(0 == ps_cur_slice->u1_nal_ref_idc)
 {
 if(ps_dec->i4_degrade_type & 0x4)
                    ps_dec->i4_mv_frac_mask = 0;

 if(ps_dec->i4_degrade_type & 0x8)
                    ps_dec->i4_mv_frac_mask = 0;
 }
 }
 else
            ps_dec->i4_degrade_pic_cnt = 0;
 }

 {
 dec_err_status_t * ps_err = ps_dec->ps_dec_err_status;
 if(ps_dec->u1_sl_typ_5_9
 && ((ps_cur_slice->u1_slice_type == I_SLICE)
 || (ps_cur_slice->u1_slice_type
 == SI_SLICE)))
            ps_err->u1_cur_pic_type = PIC_TYPE_I;
 else
            ps_err->u1_cur_pic_type = PIC_TYPE_UNKNOWN;

 if(ps_err->u1_pic_aud_i == PIC_TYPE_I)
 {
            ps_err->u1_cur_pic_type = PIC_TYPE_I;
            ps_err->u1_pic_aud_i = PIC_TYPE_UNKNOWN;
 }

 if(ps_cur_slice->u1_nal_unit_type == IDR_SLICE_NAL)
 {
 if(ps_err->u1_err_flag)
                ih264d_reset_ref_bufs(ps_dec->ps_dpb_mgr);
            ps_err->u1_err_flag = ACCEPT_ALL_PICS;
 }
 }

 if(ps_dec->u1_init_dec_flag && ps_dec->s_prev_seq_params.u1_eoseq_pending)
 {
 /* Reset the decoder picture buffers */
        WORD32 j;
 for(j = 0; j < MAX_DISP_BUFS_NEW; j++)
 {

            ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
                                  j,
                                  BUF_MGR_REF);
            ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_mv_buf_mgr,
                                  ps_dec->au1_pic_buf_id_mv_buf_id_map[j],
                                  BUF_MGR_REF);
            ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
                                  j,
                                  BUF_MGR_IO);
 }

 /* reset the decoder structure parameters related to buffer handling */
        ps_dec->u1_second_field = 0;
        ps_dec->i4_cur_display_seq = 0;

 /********************************************************************/
 /* indicate in the decoder output i4_status that some frames are being */
 /* dropped, so that it resets timestamp and wait for a new sequence */
 /********************************************************************/

        ps_dec->s_prev_seq_params.u1_eoseq_pending = 0;
 }
    ret = ih264d_init_pic(ps_dec, u2_frame_num, i4_poc, ps_pps);
 if(ret != OK)
 return ret;

    ps_dec->pv_parse_tu_coeff_data = ps_dec->pv_pic_tu_coeff_data;
    ps_dec->pv_proc_tu_coeff_data  = ps_dec->pv_pic_tu_coeff_data;
    ps_dec->ps_nmb_info = ps_dec->ps_frm_mb_info;
 if(ps_dec->u1_separate_parse)
 {
        UWORD16 pic_wd = ps_dec->u4_width_at_init;
        UWORD16 pic_ht = ps_dec->u4_height_at_init;
        UWORD32 num_mbs;

 if((NULL != ps_dec->ps_cur_sps) && (1 == (ps_dec->ps_cur_sps->u1_is_valid)))
 {
            pic_wd = ps_dec->u2_pic_wd;
            pic_ht = ps_dec->u2_pic_ht;
 }
        num_mbs = (pic_wd * pic_ht) >> 8;

 if(ps_dec->pu1_dec_mb_map)
 {
            memset((void *)ps_dec->pu1_dec_mb_map, 0, num_mbs);
 }

 if(ps_dec->pu1_recon_mb_map)
 {

            memset((void *)ps_dec->pu1_recon_mb_map, 0, num_mbs);
 }

 if(ps_dec->pu2_slice_num_map)
 {
            memset((void *)ps_dec->pu2_slice_num_map, 0,
 (num_mbs * sizeof(UWORD16)));
 }

 }

    ps_dec->ps_parse_cur_slice = &(ps_dec->ps_dec_slice_buf[0]);
    ps_dec->ps_decode_cur_slice = &(ps_dec->ps_dec_slice_buf[0]);
    ps_dec->ps_computebs_cur_slice = &(ps_dec->ps_dec_slice_buf[0]);
    ps_dec->u2_cur_slice_num = 0;

 /* Initialize all the HP toolsets to zero */
    ps_dec->s_high_profile.u1_scaling_present = 0;
    ps_dec->s_high_profile.u1_transform8x8_present = 0;

 /* Get Next Free Picture */
 if(1 == ps_dec->u4_share_disp_buf)
 {
        UWORD32 i;
 /* Free any buffer that is in the queue to be freed */
 for(i = 0; i < MAX_DISP_BUFS_NEW; i++)
 {
 if(0 == ps_dec->u4_disp_buf_to_be_freed[i])
 continue;
            ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr, i,
            BUF_MGR_IO);
            ps_dec->u4_disp_buf_to_be_freed[i] = 0;
            ps_dec->u4_disp_buf_mapping[i] = 0;

 }
 }
 if(!(u1_field_pic_flag && 0 != ps_dec->u1_top_bottom_decoded)) //ps_dec->u1_second_field))
 {
 pic_buffer_t *ps_cur_pic;
        WORD32 cur_pic_buf_id, cur_mv_buf_id;
 col_mv_buf_t *ps_col_mv;
 while(1)
 {
            ps_cur_pic = (pic_buffer_t *)ih264_buf_mgr_get_next_free(
 (buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
 &cur_pic_buf_id);
 if(ps_cur_pic == NULL)
 {
                ps_dec->i4_error_code = ERROR_UNAVAIL_PICBUF_T;
 return ERROR_UNAVAIL_PICBUF_T;
 }
 if(0 == ps_dec->u4_disp_buf_mapping[cur_pic_buf_id])
 {
 break;
 }

 }
        ps_col_mv = (col_mv_buf_t *)ih264_buf_mgr_get_next_free((buf_mgr_t *)ps_dec->pv_mv_buf_mgr,
 &cur_mv_buf_id);
 if(ps_col_mv == NULL)
 {
            ps_dec->i4_error_code = ERROR_UNAVAIL_MVBUF_T;
 return ERROR_UNAVAIL_MVBUF_T;
 }

        ps_dec->ps_cur_pic = ps_cur_pic;
        ps_dec->u1_pic_buf_id = cur_pic_buf_id;
        ps_cur_pic->u4_ts = ps_dec->u4_ts;


        ps_cur_pic->u1_mv_buf_id = cur_mv_buf_id;
        ps_dec->au1_pic_buf_id_mv_buf_id_map[cur_pic_buf_id] = cur_mv_buf_id;


         ps_cur_pic->pu1_col_zero_flag = (UWORD8 *)ps_col_mv->pv_col_zero_flag;
         ps_cur_pic->ps_mv = (mv_pred_t *)ps_col_mv->pv_mv;
         ps_dec->au1_pic_buf_ref_flag[cur_pic_buf_id] = 0;
        if(ps_dec->u1_first_slice_in_stream)
         {
             /*make first entry of list0 point to cur pic,so that if first Islice is in error, ref pic struct will have valid entries*/
             ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0];
 *(ps_dec->ps_dpb_mgr->ps_init_dpb[0][0]) = *ps_cur_pic;
 /* Initialize for field reference as well */
 *(ps_dec->ps_dpb_mgr->ps_init_dpb[0][MAX_REF_BUFS]) = *ps_cur_pic;
 }

 if(!ps_dec->ps_cur_pic)
 {
            WORD32 j;
            H264_DEC_DEBUG_PRINT("------- Display Buffers Reset --------\n");
 for(j = 0; j < MAX_DISP_BUFS_NEW; j++)
 {

                ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
                                      j,
                                      BUF_MGR_REF);
                ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_mv_buf_mgr,
                                      ps_dec->au1_pic_buf_id_mv_buf_id_map[j],
                                      BUF_MGR_REF);
                ih264_buf_mgr_release((buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
                                      j,
                                      BUF_MGR_IO);
 }

            ps_dec->i4_cur_display_seq = 0;
            ps_dec->i4_prev_max_display_seq = 0;
            ps_dec->i4_max_poc = 0;

            ps_cur_pic = (pic_buffer_t *)ih264_buf_mgr_get_next_free(
 (buf_mgr_t *)ps_dec->pv_pic_buf_mgr,
 &cur_pic_buf_id);
 if(ps_cur_pic == NULL)
 {
                ps_dec->i4_error_code = ERROR_UNAVAIL_PICBUF_T;
 return ERROR_UNAVAIL_PICBUF_T;
 }

            ps_col_mv = (col_mv_buf_t *)ih264_buf_mgr_get_next_free((buf_mgr_t *)ps_dec->pv_mv_buf_mgr,
 &cur_mv_buf_id);
 if(ps_col_mv == NULL)
 {
                ps_dec->i4_error_code = ERROR_UNAVAIL_MVBUF_T;
 return ERROR_UNAVAIL_MVBUF_T;
 }

            ps_dec->ps_cur_pic = ps_cur_pic;
            ps_dec->u1_pic_buf_id = cur_pic_buf_id;
            ps_cur_pic->u4_ts = ps_dec->u4_ts;
            ps_dec->apv_buf_id_pic_buf_map[cur_pic_buf_id] = (void *)ps_cur_pic;

            ps_cur_pic->u1_mv_buf_id = cur_mv_buf_id;
            ps_dec->au1_pic_buf_id_mv_buf_id_map[cur_pic_buf_id] = cur_mv_buf_id;

            ps_cur_pic->pu1_col_zero_flag = (UWORD8 *)ps_col_mv->pv_col_zero_flag;
            ps_cur_pic->ps_mv = (mv_pred_t *)ps_col_mv->pv_mv;
            ps_dec->au1_pic_buf_ref_flag[cur_pic_buf_id] = 0;

 }

        ps_dec->ps_cur_pic->u1_picturetype = u1_field_pic_flag;
        ps_dec->ps_cur_pic->u4_pack_slc_typ = SKIP_NONE;
        H264_DEC_DEBUG_PRINT("got a buffer\n");
 }
 else
 {
        H264_DEC_DEBUG_PRINT("did not get a buffer\n");
 }

    ps_dec->u4_pic_buf_got = 1;

    ps_dec->ps_cur_pic->i4_poc = i4_poc;
    ps_dec->ps_cur_pic->i4_frame_num = u2_frame_num;
    ps_dec->ps_cur_pic->i4_pic_num = u2_frame_num;
    ps_dec->ps_cur_pic->i4_top_field_order_cnt = ps_pps->i4_top_field_order_cnt;
    ps_dec->ps_cur_pic->i4_bottom_field_order_cnt =
                    ps_pps->i4_bottom_field_order_cnt;
    ps_dec->ps_cur_pic->i4_avg_poc = ps_pps->i4_avg_poc;
    ps_dec->ps_cur_pic->u4_time_stamp = ps_dec->u4_pts;

    ps_dec->s_cur_pic = *(ps_dec->ps_cur_pic);
 if(u1_field_pic_flag && u1_bottom_field_flag)
 {
        WORD32 i4_temp_poc;
        WORD32 i4_top_field_order_poc, i4_bot_field_order_poc;
 /* Point to odd lines, since it's bottom field */
        ps_dec->s_cur_pic.pu1_buf1 += ps_dec->s_cur_pic.u2_frm_wd_y;
        ps_dec->s_cur_pic.pu1_buf2 += ps_dec->s_cur_pic.u2_frm_wd_uv;
        ps_dec->s_cur_pic.pu1_buf3 += ps_dec->s_cur_pic.u2_frm_wd_uv;
        ps_dec->s_cur_pic.ps_mv +=
 ((ps_dec->u2_pic_ht * ps_dec->u2_pic_wd) >> 5);
        ps_dec->s_cur_pic.pu1_col_zero_flag += ((ps_dec->u2_pic_ht
 * ps_dec->u2_pic_wd) >> 5);
        ps_dec->ps_cur_pic->u1_picturetype |= BOT_FLD;
        i4_top_field_order_poc = ps_dec->ps_cur_pic->i4_top_field_order_cnt;
        i4_bot_field_order_poc = ps_dec->ps_cur_pic->i4_bottom_field_order_cnt;
        i4_temp_poc = MIN(i4_top_field_order_poc,
                                 i4_bot_field_order_poc);
        ps_dec->ps_cur_pic->i4_avg_poc = i4_temp_poc;
 }

    ps_cur_slice->u1_mbaff_frame_flag = ps_seq->u1_mb_aff_flag
 && (!u1_field_pic_flag);

    ps_dec->ps_cur_pic->u1_picturetype |= (ps_cur_slice->u1_mbaff_frame_flag
 << 2);

    ps_dec->ps_cur_mb_row = ps_dec->ps_nbr_mb_row; //[0];
    ps_dec->ps_cur_mb_row++; //Increment by 1 ,so that left mb will always be valid
    ps_dec->ps_top_mb_row =
                    ps_dec->ps_nbr_mb_row
 + ((ps_dec->u2_frm_wd_in_mbs + 1)
 << (1
 - ps_dec->ps_cur_sps->u1_frame_mbs_only_flag));
    ps_dec->ps_top_mb_row++; //Increment by 1 ,so that left mb will always be valid

    ps_dec->pu1_y = ps_dec->pu1_y_scratch[0];
    ps_dec->pu1_u = ps_dec->pu1_u_scratch[0];
    ps_dec->pu1_v = ps_dec->pu1_v_scratch[0];
    ps_dec->u1_yuv_scratch_idx = 0;
 /* CHANGED CODE */
    ps_dec->ps_mv_cur = ps_dec->s_cur_pic.ps_mv;
    ps_dec->ps_mv_top = ps_dec->ps_mv_top_p[0];
 /* CHANGED CODE */
    ps_dec->u1_mv_top_p = 0;
    ps_dec->u1_mb_idx = 0;
 /* CHANGED CODE */
    ps_dec->ps_mv_left = ps_dec->s_cur_pic.ps_mv;
    ps_dec->pu1_yleft = 0;
    ps_dec->pu1_uleft = 0;
    ps_dec->pu1_vleft = 0;
    ps_dec->u1_not_wait_rec = 2;
    ps_dec->u2_total_mbs_coded = 0;
    ps_dec->i4_submb_ofst = -(SUB_BLK_SIZE);
    ps_dec->u4_pred_info_idx = 0;
    ps_dec->u4_pred_info_pkd_idx = 0;
    ps_dec->u4_dma_buf_idx = 0;
    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->i2_prev_slice_mbx = -1;
    ps_dec->i2_prev_slice_mby = 0;
    ps_dec->u2_mv_2mb[0] = 0;
    ps_dec->u2_mv_2mb[1] = 0;
    ps_dec->u1_last_pic_not_decoded = 0;

    ps_dec->u2_cur_slice_num_dec_thread = 0;
    ps_dec->u2_cur_slice_num_bs = 0;
    ps_dec->u4_intra_pred_line_ofst = 0;
    ps_dec->pu1_cur_y_intra_pred_line = ps_dec->pu1_y_intra_pred_line;
    ps_dec->pu1_cur_u_intra_pred_line = ps_dec->pu1_u_intra_pred_line;
    ps_dec->pu1_cur_v_intra_pred_line = ps_dec->pu1_v_intra_pred_line;

    ps_dec->pu1_cur_y_intra_pred_line_base = ps_dec->pu1_y_intra_pred_line;
    ps_dec->pu1_cur_u_intra_pred_line_base = ps_dec->pu1_u_intra_pred_line;
    ps_dec->pu1_cur_v_intra_pred_line_base = ps_dec->pu1_v_intra_pred_line;





    ps_dec->pu1_prev_y_intra_pred_line = ps_dec->pu1_y_intra_pred_line
 + (ps_dec->u2_frm_wd_in_mbs * MB_SIZE);

    ps_dec->pu1_prev_u_intra_pred_line = ps_dec->pu1_u_intra_pred_line
 + ps_dec->u2_frm_wd_in_mbs * BLK8x8SIZE * YUV420SP_FACTOR;
    ps_dec->pu1_prev_v_intra_pred_line = ps_dec->pu1_v_intra_pred_line
 + ps_dec->u2_frm_wd_in_mbs * BLK8x8SIZE;

    ps_dec->ps_deblk_mbn = ps_dec->ps_deblk_pic;
    ps_dec->ps_deblk_mbn_curr = ps_dec->ps_deblk_mbn;
    ps_dec->ps_deblk_mbn_prev = ps_dec->ps_deblk_mbn + ps_dec->u1_recon_mb_grp;
 /* Initialize The Function Pointer Depending Upon the Entropy and MbAff Flag */
 {
 if(ps_cur_slice->u1_mbaff_frame_flag)
 {
            ps_dec->pf_compute_bs = ih264d_compute_bs_mbaff;
            ps_dec->pf_mvpred = ih264d_mvpred_mbaff;
 }
 else
 {
            ps_dec->pf_compute_bs = ih264d_compute_bs_non_mbaff;
            ps_dec->u1_cur_mb_fld_dec_flag = ps_cur_slice->u1_field_pic_flag;
 }
 }
 /* Set up the Parameter for DMA transfer */
 {
        UWORD8 u1_field_pic_flag = ps_dec->ps_cur_slice->u1_field_pic_flag;

        UWORD8 u1_mbaff = ps_cur_slice->u1_mbaff_frame_flag;

        UWORD8 uc_lastmbs = (((ps_dec->u2_pic_wd) >> 4)
 % (ps_dec->u1_recon_mb_grp >> u1_mbaff));
        UWORD16 ui16_lastmbs_widthY =
 (uc_lastmbs ? (uc_lastmbs << 4) : ((ps_dec->u1_recon_mb_grp
 >> u1_mbaff) << 4));
        UWORD16 ui16_lastmbs_widthUV =
                        uc_lastmbs ? (uc_lastmbs << 3) : ((ps_dec->u1_recon_mb_grp
 >> u1_mbaff) << 3);

        ps_dec->s_tran_addrecon.pu1_dest_y = ps_dec->s_cur_pic.pu1_buf1;
        ps_dec->s_tran_addrecon.pu1_dest_u = ps_dec->s_cur_pic.pu1_buf2;
        ps_dec->s_tran_addrecon.pu1_dest_v = ps_dec->s_cur_pic.pu1_buf3;

        ps_dec->s_tran_addrecon.u2_frm_wd_y = ps_dec->u2_frm_wd_y
 << u1_field_pic_flag;
        ps_dec->s_tran_addrecon.u2_frm_wd_uv = ps_dec->u2_frm_wd_uv
 << u1_field_pic_flag;

 if(u1_field_pic_flag)
 {
            ui16_lastmbs_widthY += ps_dec->u2_frm_wd_y;
            ui16_lastmbs_widthUV += ps_dec->u2_frm_wd_uv;
 }

 /* Normal Increment of Pointer */
        ps_dec->s_tran_addrecon.u4_inc_y[0] = ((ps_dec->u1_recon_mb_grp << 4)
 >> u1_mbaff);
        ps_dec->s_tran_addrecon.u4_inc_uv[0] = ((ps_dec->u1_recon_mb_grp << 4)
 >> u1_mbaff);

 /* End of Row Increment */
        ps_dec->s_tran_addrecon.u4_inc_y[1] = (ui16_lastmbs_widthY
 + (PAD_LEN_Y_H << 1)
 + ps_dec->s_tran_addrecon.u2_frm_wd_y
 * ((15 << u1_mbaff) + u1_mbaff));
        ps_dec->s_tran_addrecon.u4_inc_uv[1] = (ui16_lastmbs_widthUV
 + (PAD_LEN_UV_H << 2)
 + ps_dec->s_tran_addrecon.u2_frm_wd_uv
 * ((15 << u1_mbaff) + u1_mbaff));

 /* Assign picture numbers to each frame/field  */
 /* only once per picture.                      */
        ih264d_assign_pic_num(ps_dec);
        ps_dec->s_tran_addrecon.u2_mv_top_left_inc = (ps_dec->u1_recon_mb_grp
 << 2) - 1 - (u1_mbaff << 2);
        ps_dec->s_tran_addrecon.u2_mv_left_inc = ((ps_dec->u1_recon_mb_grp
 >> u1_mbaff) - 1) << (4 + u1_mbaff);
 }
 /**********************************************************************/
 /* High profile related initialization at pictrue level               */
 /**********************************************************************/
 if(ps_seq->u1_profile_idc == HIGH_PROFILE_IDC)
 {
 if((ps_seq->i4_seq_scaling_matrix_present_flag)
 || (ps_pps->i4_pic_scaling_matrix_present_flag))
 {
            ih264d_form_scaling_matrix_picture(ps_seq, ps_pps, ps_dec);
            ps_dec->s_high_profile.u1_scaling_present = 1;
 }
 else
 {
            ih264d_form_default_scaling_matrix(ps_dec);
 }

 if(ps_pps->i4_transform_8x8_mode_flag)
 {
            ps_dec->s_high_profile.u1_transform8x8_present = 1;
 }
 }
 else
 {
        ih264d_form_default_scaling_matrix(ps_dec);
 }

 /* required while reading the transform_size_8x8 u4_flag */
    ps_dec->s_high_profile.u1_direct_8x8_inference_flag =
                    ps_seq->u1_direct_8x8_inference_flag;
    ps_dec->s_high_profile.s_cavlc_ctxt = ps_dec->s_cavlc_ctxt;

    ps_dec->i1_recon_in_thread3_flag = 1;
    ps_dec->ps_frame_buf_ip_recon = &ps_dec->s_tran_addrecon;
 if(ps_dec->u1_separate_parse)
 {
        memcpy(&ps_dec->s_tran_addrecon_parse, &ps_dec->s_tran_addrecon,
 sizeof(tfr_ctxt_t));
 if(ps_dec->u4_num_cores >= 3 && ps_dec->i1_recon_in_thread3_flag)
 {
            memcpy(&ps_dec->s_tran_iprecon, &ps_dec->s_tran_addrecon,
 sizeof(tfr_ctxt_t));
            ps_dec->ps_frame_buf_ip_recon = &ps_dec->s_tran_iprecon;
 }
 }


    ih264d_init_deblk_tfr_ctxt(ps_dec,&(ps_dec->s_pad_mgr), &(ps_dec->s_tran_addrecon),
                               ps_dec->u2_frm_wd_in_mbs, 0);

    ps_dec->ps_cur_deblk_mb = ps_dec->ps_deblk_pic;
    ps_dec->u4_cur_deblk_mb_num = 0;

    ps_dec->u4_deblk_mb_x = 0;
    ps_dec->u4_deblk_mb_y = 0;
    ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;

    H264_MUTEX_UNLOCK(&ps_dec->process_disp_mutex);
 return OK;
}

Vulnerability Type: Exec Code Overflow Mem. Corr. 
CWE ID: CWE-119
Summary: A remote code execution vulnerability in libavc in Mediaserver could enable an attacker using a specially crafted file to cause memory corruption during media file and data processing. This issue is rated as Critical due to the possibility of remote code execution within the context of the Mediaserver process. Product: Android. Versions: 6.0, 6.0.1, 7.0, 7.1.1. Android ID: A-34097866.
Commit Message: Decoder: Initialize default reference buffers for all pictures

Reference buffer is now initialized to default value for
each pic before decoding the first slice in the pic

Bug: 34097866
Change-Id: Id64b123af2188217ce833f11db0e6c0681d41dfd
