blob: 131c8082de6af52d149e26bdc04ac663e2b020a2 [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2015 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 ih264d_thread_parse_decode.c
*
* \brief
* Contains routines that for multi-thread decoder
*
* Detailed_description
*
* \date
* 20/02/2012
*
* \author ZR
**************************************************************************
*/
#include "ih264d_error_handler.h"
#include "ih264d_debug.h"
#include "ithread.h"
#include <string.h>
#include "ih264d_defs.h"
#include "ih264d_debug.h"
#include "ih264d_tables.h"
#include "ih264d_structs.h"
#include "ih264d_defs.h"
#include "ih264d_mb_utils.h"
#include "ih264d_thread_parse_decode.h"
#include "ih264d_inter_pred.h"
#include "ih264d_process_pslice.h"
#include "ih264d_process_intra_mb.h"
#include "ih264d_deblocking.h"
#include "ih264d_format_conv.h"
void ih264d_deblock_mb_level(dec_struct_t *ps_dec,
dec_mb_info_t *ps_cur_mb_info,
UWORD32 nmb_index);
void ih264d_copy_intra_pred_line(dec_struct_t *ps_dec,
dec_mb_info_t *ps_cur_mb_info,
UWORD32 nmb_index);
void ih264d_parse_tfr_nmb(dec_struct_t * ps_dec,
UWORD8 u1_mb_idx,
UWORD8 u1_num_mbs,
UWORD8 u1_num_mbs_next,
UWORD8 u1_tfr_n_mb,
UWORD8 u1_end_of_row)
{
WORD32 i, u4_mb_num;
const UWORD32 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
UWORD32 u4_n_mb_start;
UNUSED(u1_mb_idx);
UNUSED(u1_num_mbs_next);
if(u1_tfr_n_mb)
{
u4_n_mb_start = (ps_dec->u2_cur_mb_addr + 1) - u1_num_mbs;
// copy into s_frmMbInfo
u4_mb_num = u4_n_mb_start;
u4_mb_num = (ps_dec->u2_cur_mb_addr + 1) - u1_num_mbs;
for(i = 0; i < u1_num_mbs; i++)
{
UPDATE_SLICE_NUM_MAP(ps_dec->pu2_slice_num_map, u4_mb_num,
ps_dec->u2_cur_slice_num);
DATA_SYNC();
UPDATE_MB_MAP_MBNUM_BYTE(ps_dec->pu1_dec_mb_map, u4_mb_num);
u4_mb_num++;
}
/****************************************************************/
/* Check for End Of Row in Next iteration */
/****************************************************************/
/****************************************************************/
/* Transfer the Following things */
/* N-Mb DeblkParams Data ( To Ext DeblkParams Buffer ) */
/* N-Mb Recon Data ( To Ext Frame Buffer ) */
/* N-Mb Intrapredline Data ( Updated Internally) */
/* N-Mb MV Data ( To Ext MV Buffer ) */
/* N-Mb MVTop/TopRight Data ( To Int MV Top Scratch Buffers) */
/****************************************************************/
/* Swap top and current pointers */
ps_dec->s_tran_addrecon_parse.pu1_dest_y +=
ps_dec->s_tran_addrecon_parse.u4_inc_y[u1_end_of_row];
ps_dec->s_tran_addrecon_parse.pu1_dest_u +=
ps_dec->s_tran_addrecon_parse.u4_inc_uv[u1_end_of_row];
ps_dec->s_tran_addrecon_parse.pu1_dest_v +=
ps_dec->s_tran_addrecon_parse.u4_inc_uv[u1_end_of_row];
if(u1_end_of_row)
{
UWORD16 u2_mb_y;
UWORD32 u4_frame_stride, y_offset;
ps_dec->ps_top_mb_row = ps_dec->ps_cur_mb_row;
ps_dec->ps_cur_mb_row += ((ps_dec->u2_frm_wd_in_mbs) << u1_mbaff);
u2_mb_y = ps_dec->u2_mby + (1 + u1_mbaff);
u4_frame_stride = ps_dec->u2_frm_wd_y
<< ps_dec->ps_cur_slice->u1_field_pic_flag;
y_offset = (u2_mb_y * u4_frame_stride) << 4;
ps_dec->s_tran_addrecon_parse.pu1_dest_y =
ps_dec->s_cur_pic.pu1_buf1 + y_offset;
u4_frame_stride = ps_dec->u2_frm_wd_uv
<< ps_dec->ps_cur_slice->u1_field_pic_flag;
y_offset = (u2_mb_y * u4_frame_stride) << 3;
ps_dec->s_tran_addrecon_parse.pu1_dest_u =
ps_dec->s_cur_pic.pu1_buf2 + y_offset;
ps_dec->s_tran_addrecon_parse.pu1_dest_v =
ps_dec->s_cur_pic.pu1_buf3 + y_offset;
}
ps_dec->ps_deblk_mbn += u1_num_mbs;
/*
* The Slice boundary is also a valid condition to transfer. So recalculate
* the Left increment, in case the number of MBs is lesser than the
* N MB value. c_numMbs will be equal to N of N MB if the entire N Mb is
* decoded.
*/
ps_dec->s_tran_addrecon.u2_mv_left_inc = ((u1_num_mbs >> u1_mbaff) - 1)
<< (4 + u1_mbaff);
ps_dec->s_tran_addrecon.u2_mv_top_left_inc = (u1_num_mbs << 2) - 1
- (u1_mbaff << 2);
/* reassign left MV and cur MV pointers */
ps_dec->ps_mv_left = ps_dec->ps_mv_cur
+ ps_dec->s_tran_addrecon.u2_mv_left_inc;
ps_dec->ps_mv_cur += (u1_num_mbs << 4);
ps_dec->u4_num_mbs_prev_nmb = u1_num_mbs;
}
}
void ih264d_decode_tfr_nmb(dec_struct_t * ps_dec,
UWORD8 u1_num_mbs,
UWORD8 u1_num_mbs_next,
UWORD8 u1_end_of_row)
{
UWORD32 u1_end_of_row_next;
const UWORD32 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
/****************************************************************/
/* Check for End Of Row in Next iteration */
/****************************************************************/
u1_end_of_row_next = u1_num_mbs_next &&
((u1_num_mbs_next) <= (ps_dec->u1_recon_mb_grp >> u1_mbaff));
/****************************************************************/
/* Transfer the Following things */
/* N-Mb DeblkParams Data ( To Ext DeblkParams Buffer ) */
/* N-Mb Recon Data ( To Ext Frame Buffer ) */
/* N-Mb Intrapredline Data ( Updated Internally) */
/* N-Mb MV Data ( To Ext MV Buffer ) */
/* N-Mb MVTop/TopRight Data ( To Int MV Top Scratch Buffers) */
/****************************************************************/
if(u1_end_of_row)
{
ps_dec->i2_dec_thread_mb_y += (1 << u1_mbaff);
}
ih264d_transfer_mb_group_data(ps_dec, u1_num_mbs, u1_end_of_row,
u1_end_of_row_next);
}
WORD32 ih264d_decode_recon_tfr_nmb_thread(dec_struct_t * ps_dec,
UWORD8 u1_num_mbs,
UWORD8 u1_num_mbs_next,
UWORD8 u1_end_of_row)
{
WORD32 i,j;
dec_mb_info_t * ps_cur_mb_info;
UWORD32 u4_update_mbaff = 0;
const UWORD32 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
UWORD32 u1_slice_type, u1_B;
WORD32 u1_skip_th;
UWORD32 u1_ipcm_th;
UWORD32 u4_cond;
UWORD16 u2_slice_num,u2_cur_dec_mb_num;
WORD32 ret;
UWORD32 u4_mb_num;
WORD32 nop_cnt = 8*128;
u1_slice_type = ps_dec->ps_decode_cur_slice->slice_type;
u1_B = (u1_slice_type == B_SLICE);
u1_skip_th = ((u1_slice_type != I_SLICE) ?
(u1_B ? B_8x8 : PRED_8x8R0) : -1);
u1_ipcm_th = ((u1_slice_type != I_SLICE) ? (u1_B ? 23 : 5) : 0);
u2_cur_dec_mb_num = ps_dec->cur_dec_mb_num;
while(1)
{
UWORD32 u4_max_mb = (UWORD32)(ps_dec->i2_dec_thread_mb_y + (1 << u1_mbaff)) * ps_dec->u2_frm_wd_in_mbs - 1;
u4_mb_num = u2_cur_dec_mb_num;
/*introducing 1 MB delay*/
u4_mb_num = MIN(u4_mb_num + u1_num_mbs + 1, u4_max_mb);
CHECK_MB_MAP_BYTE(u4_mb_num, ps_dec->pu1_dec_mb_map, u4_cond);
if(u4_cond)
{
break;
}
else
{
if(nop_cnt > 0)
{
nop_cnt -= 128;
NOP(128);
}
else
{
if(ps_dec->u4_output_present && (2 == ps_dec->u4_num_cores) &&
(ps_dec->u4_fmt_conv_cur_row < ps_dec->s_disp_frame_info.u4_y_ht))
{
ps_dec->u4_fmt_conv_num_rows =
MIN(FMT_CONV_NUM_ROWS,
(ps_dec->s_disp_frame_info.u4_y_ht
- ps_dec->u4_fmt_conv_cur_row));
ih264d_format_convert(ps_dec, &(ps_dec->s_disp_op),
ps_dec->u4_fmt_conv_cur_row,
ps_dec->u4_fmt_conv_num_rows);
ps_dec->u4_fmt_conv_cur_row += ps_dec->u4_fmt_conv_num_rows;
}
else
{
nop_cnt = 8*128;
ithread_yield();
}
}
}
}
/* N Mb MC Loop */
for(i = 0; i < u1_num_mbs; i++)
{
u4_mb_num = u2_cur_dec_mb_num;
GET_SLICE_NUM_MAP(ps_dec->pu2_slice_num_map, u2_cur_dec_mb_num,
u2_slice_num);
if(u2_slice_num != ps_dec->u2_cur_slice_num_dec_thread)
{
ps_dec->u4_cur_slice_decode_done = 1;
break;
}
ps_cur_mb_info = &ps_dec->ps_frm_mb_info[u2_cur_dec_mb_num];
ps_dec->u4_dma_buf_idx = 0;
ps_dec->u4_pred_info_idx = 0;
if(ps_cur_mb_info->u1_mb_type <= u1_skip_th)
{
WORD32 pred_cnt = 0;
pred_info_pkd_t *ps_pred_pkd;
UWORD32 u4_pred_info_pkd_idx;
WORD8 i1_pred;
u4_pred_info_pkd_idx = ps_cur_mb_info->u4_pred_info_pkd_idx;
while(pred_cnt < ps_cur_mb_info->u1_num_pred_parts)
{
ps_pred_pkd = ps_dec->ps_pred_pkd + u4_pred_info_pkd_idx;
ps_dec->p_form_mb_part_info_thread(ps_pred_pkd,ps_dec,
ps_cur_mb_info->u2_mbx,
ps_cur_mb_info->u2_mby,
(i >> u1_mbaff),
ps_cur_mb_info);
u4_pred_info_pkd_idx++;
pred_cnt++;
}
ps_dec->p_mc_dec_thread(ps_dec, ps_cur_mb_info);
}
else if(ps_cur_mb_info->u1_mb_type == MB_SKIP)
{
WORD32 pred_cnt = 0;
pred_info_pkd_t *ps_pred_pkd;
UWORD32 u4_pred_info_pkd_idx;
WORD8 i1_pred;
u4_pred_info_pkd_idx = ps_cur_mb_info->u4_pred_info_pkd_idx;
while(pred_cnt < ps_cur_mb_info->u1_num_pred_parts)
{
ps_pred_pkd = ps_dec->ps_pred_pkd + u4_pred_info_pkd_idx;
ps_dec->p_form_mb_part_info_thread(ps_pred_pkd,ps_dec,
ps_cur_mb_info->u2_mbx,
ps_cur_mb_info->u2_mby,
(i >> u1_mbaff),
ps_cur_mb_info);
u4_pred_info_pkd_idx++;
pred_cnt++;
}
/* Decode MB skip */
ps_dec->p_mc_dec_thread(ps_dec, ps_cur_mb_info);
}
u2_cur_dec_mb_num++;
}
/* N Mb IQ IT RECON Loop */
for(j = 0; j < i; j++)
{
ps_cur_mb_info = &ps_dec->ps_frm_mb_info[ps_dec->cur_dec_mb_num];
if((ps_dec->u4_num_cores == 2) || !ps_dec->i1_recon_in_thread3_flag)
{
if(ps_cur_mb_info->u1_mb_type <= u1_skip_th)
{
ih264d_process_inter_mb(ps_dec, ps_cur_mb_info, j);
}
else if(ps_cur_mb_info->u1_mb_type != MB_SKIP)
{
if((u1_ipcm_th + 25) != ps_cur_mb_info->u1_mb_type)
{
ps_cur_mb_info->u1_mb_type -= (u1_skip_th + 1);
ih264d_process_intra_mb(ps_dec, ps_cur_mb_info, j);
}
}
if(ps_dec->u4_use_intrapred_line_copy == 1)
ih264d_copy_intra_pred_line(ps_dec, ps_cur_mb_info, j);
}
DATA_SYNC();
if(u1_mbaff)
{
if(u4_update_mbaff)
{
UWORD32 u4_mb_num = ps_cur_mb_info->u2_mbx
+ ps_dec->u2_frm_wd_in_mbs
* (ps_cur_mb_info->u2_mby >> 1);
UPDATE_MB_MAP_MBNUM_BYTE(ps_dec->pu1_recon_mb_map, u4_mb_num);
u4_update_mbaff = 0;
}
else
{
u4_update_mbaff = 1;
}
}
else
{
UWORD32 u4_mb_num = ps_cur_mb_info->u2_mbx
+ ps_dec->u2_frm_wd_in_mbs * ps_cur_mb_info->u2_mby;
UPDATE_MB_MAP_MBNUM_BYTE(ps_dec->pu1_recon_mb_map, u4_mb_num);
}
ps_dec->cur_dec_mb_num++;
}
/*N MB deblocking*/
if(ps_dec->u4_nmb_deblk == 1)
{
UWORD32 u4_wd_y, u4_wd_uv;
tfr_ctxt_t *ps_tfr_cxt = &(ps_dec->s_tran_addrecon);
UWORD8 u1_field_pic_flag = ps_dec->ps_cur_slice->u1_field_pic_flag;
const WORD32 i4_cb_qp_idx_ofst =
ps_dec->ps_cur_pps->i1_chroma_qp_index_offset;
const WORD32 i4_cr_qp_idx_ofst =
ps_dec->ps_cur_pps->i1_second_chroma_qp_index_offset;
u4_wd_y = ps_dec->u2_frm_wd_y << u1_field_pic_flag;
u4_wd_uv = ps_dec->u2_frm_wd_uv << u1_field_pic_flag;
ps_cur_mb_info = &ps_dec->ps_frm_mb_info[ps_dec->u4_cur_deblk_mb_num];
ps_dec->u4_deblk_mb_x = ps_cur_mb_info->u2_mbx;
ps_dec->u4_deblk_mb_y = ps_cur_mb_info->u2_mby;
for(j = 0; j < i; j++)
{
ih264d_deblock_mb_nonmbaff(ps_dec, ps_tfr_cxt,
i4_cb_qp_idx_ofst, i4_cr_qp_idx_ofst,
u4_wd_y, u4_wd_uv);
}
}
/*handle the last mb in picture case*/
if(ps_dec->cur_dec_mb_num > ps_dec->ps_cur_sps->u2_max_mb_addr)
ps_dec->u4_cur_slice_decode_done = 1;
if(i != u1_num_mbs)
{
u1_end_of_row = 0;
/*Number of MB's left in row*/
u1_num_mbs_next = u1_num_mbs_next + ((u1_num_mbs - i) >> u1_mbaff);
}
ih264d_decode_tfr_nmb(ps_dec, (i), u1_num_mbs_next, u1_end_of_row);
return OK;
}
WORD32 ih264d_decode_slice_thread(dec_struct_t *ps_dec)
{
UWORD8 u1_num_mbs_next, u1_num_mbsleft, u1_end_of_row = 0;
const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
UWORD8 u1_mbaff, u1_num_mbs;
UWORD16 u2_first_mb_in_slice;
UWORD16 i16_mb_x, i16_mb_y;
UWORD8 u1_field_pic;
UWORD32 u4_frame_stride, x_offset, y_offset;
WORD32 ret;
tfr_ctxt_t *ps_trns_addr;
/*check for mb map of first mb in slice to ensure slice header is parsed*/
while(1)
{
UWORD32 u4_mb_num = ps_dec->cur_dec_mb_num;
UWORD32 u4_cond = 0;
WORD32 nop_cnt = 8 * 128;
CHECK_MB_MAP_BYTE(u4_mb_num, ps_dec->pu1_dec_mb_map, u4_cond);
if(u4_cond)
{
break;
}
else
{
if(nop_cnt > 0)
{
nop_cnt -= 128;
NOP(128);
}
else if(ps_dec->u4_output_present && (2 == ps_dec->u4_num_cores) &&
(ps_dec->u4_fmt_conv_cur_row < ps_dec->s_disp_frame_info.u4_y_ht))
{
ps_dec->u4_fmt_conv_num_rows =
MIN(FMT_CONV_NUM_ROWS,
(ps_dec->s_disp_frame_info.u4_y_ht
- ps_dec->u4_fmt_conv_cur_row));
ih264d_format_convert(ps_dec, &(ps_dec->s_disp_op),
ps_dec->u4_fmt_conv_cur_row,
ps_dec->u4_fmt_conv_num_rows);
ps_dec->u4_fmt_conv_cur_row += ps_dec->u4_fmt_conv_num_rows;
}
else
{
nop_cnt = 8*128;
ithread_yield();
}
DEBUG_THREADS_PRINTF("waiting for mb mapcur_dec_mb_num = %d,ps_dec->u2_cur_mb_addr = %d\n",u2_cur_dec_mb_num,
ps_dec->u2_cur_mb_addr);
}
}
u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
u2_first_mb_in_slice = ps_dec->ps_decode_cur_slice->u4_first_mb_in_slice;
i16_mb_x = MOD(u2_first_mb_in_slice, i2_pic_wdin_mbs);
i16_mb_y = DIV(u2_first_mb_in_slice, i2_pic_wdin_mbs);
i16_mb_y <<= u1_mbaff;
ps_dec->i2_dec_thread_mb_y = i16_mb_y;
ps_dec->cur_dec_mb_num = u2_first_mb_in_slice << u1_mbaff;
if((ps_dec->u4_num_cores == 2) || !ps_dec->i1_recon_in_thread3_flag)
{
ps_dec->pv_proc_tu_coeff_data =
(void *) ps_dec->ps_decode_cur_slice->pv_tu_coeff_data_start;
}
// recalculate recon pointers
u1_field_pic = ps_dec->ps_cur_slice->u1_field_pic_flag;
u4_frame_stride = ps_dec->u2_frm_wd_y << u1_field_pic;
x_offset = i16_mb_x << 4;
y_offset = (i16_mb_y * u4_frame_stride) << 4;
ps_trns_addr = &(ps_dec->s_tran_addrecon);
ps_trns_addr->pu1_dest_y = ps_dec->s_cur_pic.pu1_buf1 + x_offset + y_offset;
u4_frame_stride = ps_dec->u2_frm_wd_uv << u1_field_pic;
x_offset >>= 1;
y_offset = (i16_mb_y * u4_frame_stride) << 3;
x_offset *= YUV420SP_FACTOR;
ps_trns_addr->pu1_dest_u = ps_dec->s_cur_pic.pu1_buf2 + x_offset + y_offset;
ps_trns_addr->pu1_dest_v = ps_dec->s_cur_pic.pu1_buf3 + x_offset + y_offset;
ps_trns_addr->pu1_mb_y = ps_trns_addr->pu1_dest_y;
ps_trns_addr->pu1_mb_u = ps_trns_addr->pu1_dest_u;
ps_trns_addr->pu1_mb_v = ps_trns_addr->pu1_dest_v;
/* Initialise MC and formMbPartInfo fn ptrs one time based on profile_idc */
{
ps_dec->p_mc_dec_thread = ih264d_motion_compensate_bp;
ps_dec->p_form_mb_part_info_thread = ih264d_form_mb_part_info_bp;
}
{
UWORD8 uc_nofield_nombaff;
uc_nofield_nombaff = ((ps_dec->ps_cur_slice->u1_field_pic_flag == 0)
&& (ps_dec->ps_cur_slice->u1_mbaff_frame_flag == 0)
&& (ps_dec->ps_decode_cur_slice->slice_type != B_SLICE)
&& (ps_dec->ps_cur_pps->u1_wted_pred_flag == 0));
if(uc_nofield_nombaff == 0)
{
ps_dec->p_mc_dec_thread = ih264d_motion_compensate_mp;
ps_dec->p_form_mb_part_info_thread = ih264d_form_mb_part_info_mp;
}
}
ps_dec->u4_cur_slice_decode_done = 0;
while(ps_dec->u4_cur_slice_decode_done != 1)
{
u1_num_mbsleft = ((i2_pic_wdin_mbs - i16_mb_x) << u1_mbaff);
if(u1_num_mbsleft <= ps_dec->u1_recon_mb_grp)
{
u1_num_mbs = u1_num_mbsleft;
/*Indicate number of mb's left in a row*/
u1_num_mbs_next = 0;
u1_end_of_row = 1;
i16_mb_x = 0;
}
else
{
u1_num_mbs = ps_dec->u1_recon_mb_grp;
/*Indicate number of mb's left in a row*/
u1_num_mbs_next = i2_pic_wdin_mbs - i16_mb_x
- (ps_dec->u1_recon_mb_grp >> u1_mbaff);
i16_mb_x += (u1_num_mbs >> u1_mbaff);
u1_end_of_row = 0;
}
ret = ih264d_decode_recon_tfr_nmb_thread(ps_dec, u1_num_mbs, u1_num_mbs_next,
u1_end_of_row);
if(ret != OK)
return ret;
}
return OK;
}
void ih264d_decode_picture_thread(dec_struct_t *ps_dec )
{
ithread_set_name("ih264d_decode_picture_thread");
while(1)
{
/*Complete all writes before processing next slice*/
DEBUG_THREADS_PRINTF(" Entering decode slice\n");
ih264d_decode_slice_thread(ps_dec);
DEBUG_THREADS_PRINTF(" Exit ih264d_decode_slice_thread \n");
if(ps_dec->cur_dec_mb_num
> ps_dec->ps_cur_sps->u2_max_mb_addr)
{
/*Last slice in frame*/
break;
}
else
{
ps_dec->ps_decode_cur_slice++;
ps_dec->u2_cur_slice_num_dec_thread++;
}
}
if(ps_dec->u4_output_present && (2 == ps_dec->u4_num_cores) &&
(ps_dec->u4_fmt_conv_cur_row < ps_dec->s_disp_frame_info.u4_y_ht))
{
ps_dec->u4_fmt_conv_num_rows =
(ps_dec->s_disp_frame_info.u4_y_ht
- ps_dec->u4_fmt_conv_cur_row);
ih264d_format_convert(ps_dec, &(ps_dec->s_disp_op),
ps_dec->u4_fmt_conv_cur_row,
ps_dec->u4_fmt_conv_num_rows);
ps_dec->u4_fmt_conv_cur_row += ps_dec->u4_fmt_conv_num_rows;
}
}
void ih264d_signal_decode_thread(dec_struct_t *ps_dec)
{
if(ps_dec->u4_dec_thread_created == 1)
{
ithread_join(ps_dec->pv_dec_thread_handle, NULL);
ps_dec->u4_dec_thread_created = 0;
}
}
void ih264d_signal_bs_deblk_thread(dec_struct_t *ps_dec)
{
if(ps_dec->u4_bs_deblk_thread_created)
{
ithread_join(ps_dec->pv_bs_deblk_thread_handle, NULL);
ps_dec->u4_bs_deblk_thread_created = 0;
}
}