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libavc/decoder/ih264d_parse_bslice.c
Hamsalekha S caab4fe068 Multithreading changes and better error resilience 
Fixed the following bugs
Issue 21145276
Issue 21144884
Issue 21181133
Issue 21181134

Decoder now returns error if the level in stream is higher than level at init

Change-Id: I8892c62bd98f7854d046510330c05a1e9ca826b2
2015-05-19 17:38:02 +05:30

1691 lines
66 KiB
C
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/******************************************************************************
*
* 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_parse_bslice.c
*
* \brief
* Contains routines that decode a I slice type
*
* Detailed_description
*
* \date
* 07/07/2003
*
* \author NS
**************************************************************************
*/
#include <string.h>
#include "ih264d_bitstrm.h"
#include "ih264d_defs.h"
#include "ih264d_debug.h"
#include "ih264d_tables.h"
#include "ih264d_structs.h"
#include "ih264d_defs.h"
#include "ih264d_parse_cavlc.h"
#include "ih264d_mb_utils.h"
#include "ih264d_parse_slice.h"
#include "ih264d_process_intra_mb.h"
#include "ih264d_mvpred.h"
#include "ih264d_parse_islice.h"
#include "ih264d_inter_pred.h"
#include "ih264d_process_pslice.h"
#include "ih264d_process_bslice.h"
#include "ih264d_deblocking.h"
#include "ih264d_cabac.h"
#include "ih264d_parse_mb_header.h"
#include "ih264d_error_handler.h"
#include "ih264d_mvpred.h"
#include "ih264d_cabac.h"
#include "ih264d_utils.h"
void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec);
/*!
**************************************************************************
* \if Function name : ParseMb_SubMb_PredBCav\endif
*
* \brief
* Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1
*
* \return
* None.
*
**************************************************************************
*/
WORD32 ih264d_parse_bmb_non_direct_cavlc(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_mb_num,
UWORD8 u1_num_mbsNby2)
{
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 * pu1_sub_mb_pred_modes = (UWORD8 *)(gau1_ih264d_submb_pred_modes) + 4;
const UWORD8 (*pu1_mb_pred_modes)[32] =
(const UWORD8 (*)[32])gau1_ih264d_mb_pred_modes;
const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part;
const UWORD8 * pu1_sub_mb_mc_mode = (const UWORD8 *)(gau1_ih264d_submb_mc_mode)
+ 4;
parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data
+ u1_num_mbsNby2;
UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info;
WORD8 (*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_parse_mb_data->i1_ref_idx;
UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
UWORD8 u1_mb_mc_mode, u1_num_mb_part, u1_sub_mb = !(u1_mb_type ^ B_8x8);
UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0;
WORD32 ret;
if(u1_sub_mb)
{
UWORD8 uc_i;
u1_mb_mc_mode = 0;
u1_num_mb_part = 4;
/* Reading the subMB type */
for(uc_i = 0; uc_i < 4; uc_i++)
{
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 > 12)
return ERROR_SUB_MB_TYPE;
else
{
UWORD8 u1_subMbPredMode = pu1_sub_mb_pred_modes[ui_sub_mb_mode];
u4_mb_mc_mode = (u4_mb_mc_mode << 8)
| pu1_sub_mb_mc_mode[ui_sub_mb_mode];
u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredMode;
pi1_ref_idx[0][uc_i] = ((u1_subMbPredMode & PRED_L0) - 1) >> 1;
pi1_ref_idx[1][uc_i] = ((u1_subMbPredMode & PRED_L1) - 1) >> 1;
COPYTHECONTEXT("sub_mb_type", u1_subMbPredMode);
}
/* Storing collocated Mb and SubMb mode information */
*pu1_col_info++ = ((PRED_8x8) << 6)
| ((pu1_sub_mb_mc_mode[ui_sub_mb_mode] << 4));
if(ui_sub_mb_mode != B_DIRECT_8x8)
{
if(ui_sub_mb_mode > B_BI_8x8)
{
ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
}
}
else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag)
{
ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
}
}
}
else
{
UWORD8 u1_mb_pred_mode_idx = 5 + u1_mb_type;
UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mb_pred_mode_idx];
UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mb_pred_mode_idx];
u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode;
u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode];
pi1_ref_idx[0][0] = ((u1_mb_pred_mode_part0 & PRED_L0) - 1) >> 1;
pi1_ref_idx[1][0] = ((u1_mb_pred_mode_part0 & PRED_L1) - 1) >> 1;
pi1_ref_idx[0][1] = ((u1_mb_pred_mode_part1 & PRED_L0) - 1) >> 1;
pi1_ref_idx[1][1] = ((u1_mb_pred_mode_part1 & PRED_L1) - 1) >> 1;
u4_mb_pred_mode = (u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1;
u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8);
u4_mb_mc_mode <<= 16;
u4_mb_pred_mode <<= 16;
/* Storing collocated Mb and SubMb mode information */
*pu1_col_info++ = (u1_mb_mc_mode << 6);
if(u1_mb_mc_mode)
*pu1_col_info++ = (u1_mb_mc_mode << 6);
}
{
UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
UWORD8 *pu1_num_ref_idx_lx_active =
ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active;
const UWORD8 u1_mbaff_field = (u1_mbaff & uc_field);
UWORD8 u4_num_ref_idx_lx_active;
u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[0]
<< u1_mbaff_field) - 1;
if(u4_num_ref_idx_lx_active)
{
if(1 == u4_num_ref_idx_lx_active)
ih264d_parse_bmb_ref_index_cavlc_range1(
u1_num_mb_part, ps_bitstrm, pi1_ref_idx[0],
u4_num_ref_idx_lx_active);
else
{
ret = ih264d_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm,
pi1_ref_idx[0],
u4_num_ref_idx_lx_active);
if(ret != OK)
return ret;
}
}
u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[1]
<< u1_mbaff_field) - 1;
if(u4_num_ref_idx_lx_active)
{
if(1 == u4_num_ref_idx_lx_active)
ih264d_parse_bmb_ref_index_cavlc_range1(
u1_num_mb_part, ps_bitstrm, pi1_ref_idx[1],
u4_num_ref_idx_lx_active);
else
{
ret = ih264d_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm,
pi1_ref_idx[1],
u4_num_ref_idx_lx_active);
if(ret != OK)
return ret;
}
}
}
/* Read MotionVectors */
{
const UWORD8 * pu1_top_left_sub_mb_indx;
const UWORD8 * pu1_sub_mb_indx_mod =
(const UWORD8 *)(gau1_ih264d_submb_indx_mod)
+ (u1_sub_mb * 6);
const UWORD8 * pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw;
const UWORD8 * pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth;
const UWORD8 * pu1_num_sub_mb_part =
(const UWORD8 *)gau1_ih264d_num_submb_part;
const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw;
const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth;
UWORD8 u1_p_idx = 0, u1_num_submb_part, uc_lx;
parse_part_params_t * ps_part;
mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
UWORD8 u1_mb_part_wd, u1_mb_part_ht;
/* Initialisations */
ps_part = ps_dec->ps_part;
/* Default Initialization for Non subMb Case Mode */
u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode];
u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode];
u1_num_submb_part = 1;
/* Decoding the MV for the subMB */
for(uc_lx = 0; uc_lx < 2; uc_lx++)
{
UWORD8 u1_sub_mb_num = 0, u1_pred_mode, uc_i;
UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode;
UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode;
UWORD16 u2_sub_mb_num = 0x028A; // for sub mb case
UWORD8 u1_b2 = uc_lx << 1;
u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0;
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1);
for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
{
UWORD8 u1_mb_mc_mode, uc_j;
UWORD8 i1_pred = u4_mb_pred_mode_tmp >> 24;
u1_mb_mc_mode = u4_mb_mc_mode_tmp >> 24;
u4_mb_pred_mode_tmp <<= 8;
u4_mb_mc_mode_tmp <<= 8;
/* subMb prediction mode */
if(u1_sub_mb)
{
u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode];
u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode];
u1_sub_mb_num = u2_sub_mb_num >> 12;
u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode];
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod
+ (u1_mb_mc_mode << 1);
u2_sub_mb_num <<= 4;
}
for(uc_j = 0; uc_j < u1_num_submb_part;
uc_j++, pu1_top_left_sub_mb_indx++)
{
mv_pred_t * ps_mv;
u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx;
ps_mv = ps_mv_start + u1_sub_mb_num;
/* Storing Info for partitions, writing only once */
if(uc_lx)
{
ps_part->u1_is_direct = (!i1_pred);
ps_part->u1_pred_mode = i1_pred;
ps_part->u1_sub_mb_num = u1_sub_mb_num;
ps_part->u1_partheight = u1_mb_part_ht;
ps_part->u1_partwidth = u1_mb_part_wd;
/* Increment partition Index */
u1_p_idx++;
ps_part++;
}
if(i1_pred & u1_pred_mode)
{
WORD16 i2_mvx, i2_mvy;
//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
//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_mvy = (-(WORD32)u4_abs_val);
else
i2_mvy = (u4_abs_val);
}
//inlinined ih264d_sev
/* Storing Mv residuals */
ps_mv->i2_mv[u1_b2] = i2_mvx;
ps_mv->i2_mv[u1_b2 + 1] = i2_mvy;
}
}
}
}
/* write back to the scratch partition info */
ps_dec->ps_part = ps_part;
ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part;
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ParseMb_SubMb_PredBCab\endif
*
* \brief
* Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1
*
* \return
* None.
*
**************************************************************************
*/
WORD32 ih264d_parse_bmb_non_direct_cabac(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_mb_num,
UWORD8 u1_num_mbsNby2)
{
/* Loads from ps_dec */
decoding_envirnoment_t * ps_cab_env = &ps_dec->s_cab_dec_env;
dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm;
ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data
+ u1_num_mbsNby2;
/* table pointer loads */
const UWORD8 * pu1_sub_mb_pred_modes = (UWORD8 *)(gau1_ih264d_submb_pred_modes)
+ 4;
const UWORD8 (*pu1_mb_pred_modes)[32] =
(const UWORD8 (*)[32])gau1_ih264d_mb_pred_modes;
const UWORD8 *pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part;
const UWORD8 *pu1_sub_mb_mc_mode = (UWORD8 *)(gau1_ih264d_submb_mc_mode) + 4;
const UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info;
WORD8 *pi1_ref_idx_l0 = &ps_parse_mb_data->i1_ref_idx[0][0];
WORD8 *pi1_ref_idx_l1 = &ps_parse_mb_data->i1_ref_idx[1][0];
UWORD8 u1_dec_ref_l0, u1_dec_ref_l1;
UWORD8 u1_num_mb_part, u1_mb_mc_mode, u1_sub_mb, u1_mbpred_mode = 5
+ u1_mb_type;
UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0;
WORD32 ret;
p_curr_ctxt->u1_mb_type = CAB_NON_BD16x16;
u1_sub_mb = !(u1_mb_type ^ B_8x8);
{
UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
UWORD8 *pu1_num_ref_idx_lx_active =
ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active;
UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
UWORD8 u1_mbaff_field = (u1_mbaff & uc_field);
u1_dec_ref_l0 = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1;
u1_dec_ref_l1 = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1;
}
if(u1_sub_mb)
{
const UWORD8 u1_colz = ((PRED_8x8) << 6);
UWORD8 uc_i;
u1_mb_mc_mode = 0;
u1_num_mb_part = 4;
/* Reading the subMB type */
for(uc_i = 0; uc_i < 4; uc_i++)
{
UWORD8 u1_sub_mb_mode, u1_subMbPredModes;
u1_sub_mb_mode = ih264d_parse_submb_type_cabac(
1, ps_cab_env, ps_bitstrm,
ps_dec->p_sub_mb_type_t);
if(u1_sub_mb_mode > 12)
return ERROR_SUB_MB_TYPE;
u1_subMbPredModes = pu1_sub_mb_pred_modes[u1_sub_mb_mode];
u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[u1_sub_mb_mode];
u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredModes;
*pi1_ref_idx_l0++ =
(u1_subMbPredModes & PRED_L0) ? u1_dec_ref_l0 : -1;
*pi1_ref_idx_l1++ =
(u1_subMbPredModes & PRED_L1) ? u1_dec_ref_l1 : -1;
COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
/* Storing collocated Mb and SubMb mode information */
*pu1_col_info++ =
(u1_colz | (pu1_sub_mb_mc_mode[u1_sub_mb_mode] << 4));
if(u1_sub_mb_mode != B_DIRECT_8x8)
{
if(u1_sub_mb_mode > B_BI_8x8)
{
ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
}
}
else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag)
{
ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
}
}
pi1_ref_idx_l0 -= 4;
pi1_ref_idx_l1 -= 4;
}
else
{
UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mbpred_mode];
UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mbpred_mode];
u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode;
u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode];
/* Storing collocated Mb and SubMb mode information */
*pu1_col_info++ = (u1_mb_mc_mode << 6);
if(u1_mb_mc_mode)
*pu1_col_info++ = (u1_mb_mc_mode << 6);
u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8);
u4_mb_mc_mode <<= 16;
u4_mb_pred_mode = ((u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1) << 16;
*pi1_ref_idx_l0++ = (u1_mb_pred_mode_part0 & PRED_L0) ? u1_dec_ref_l0 : -1;
*pi1_ref_idx_l0-- = (u1_mb_pred_mode_part1 & PRED_L0) ? u1_dec_ref_l0 : -1;
*pi1_ref_idx_l1++ = (u1_mb_pred_mode_part0 & PRED_L1) ? u1_dec_ref_l1 : -1;
*pi1_ref_idx_l1-- = (u1_mb_pred_mode_part1 & PRED_L1) ? u1_dec_ref_l1 : -1;
}
{
WORD8 *pi1_lft_cxt = ps_dec->pi1_left_ref_idx_ctxt_inc;
WORD8 *pi1_top_cxt = p_curr_ctxt->i1_ref_idx;
ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, u1_dec_ref_l0,
u1_mb_mc_mode, pi1_ref_idx_l0, pi1_lft_cxt,
pi1_top_cxt, ps_cab_env, ps_bitstrm,
ps_dec->p_ref_idx_t);
if(ret != OK)
return ret;
ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 2, u1_dec_ref_l1,
u1_mb_mc_mode, pi1_ref_idx_l1, pi1_lft_cxt,
pi1_top_cxt, ps_cab_env, ps_bitstrm,
ps_dec->p_ref_idx_t);
if(ret != OK)
return ret;
}
/* Read MotionVectors */
{
const UWORD8 *pu1_top_left_sub_mb_indx;
UWORD8 uc_j, uc_lx;
UWORD8 u1_mb_part_wd, u1_mb_part_ht;
const UWORD8 *pu1_sub_mb_indx_mod =
(const UWORD8 *)gau1_ih264d_submb_indx_mod
+ (u1_sub_mb * 6);
const UWORD8 *pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw;
const UWORD8 *pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth;
const UWORD8 *pu1_num_sub_mb_part =
(const UWORD8 *)gau1_ih264d_num_submb_part;
const UWORD8 *pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw;
const UWORD8 *pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth;
UWORD8 u1_p_idx = 0;
UWORD8 u1_num_submb_part;
parse_part_params_t *ps_part;
/* Initialisations */
mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
ps_part = ps_dec->ps_part;
/* Default initialization for non subMb case */
u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode];
u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode];
u1_num_submb_part = 1;
/* Decoding the MV for the subMB */
for(uc_lx = 0; uc_lx < 2; uc_lx++)
{
UWORD8 u1_sub_mb_num = 0;
UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode;
UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode;
UWORD8 u1_mb_mc_mode_1, u1_pred_mode, uc_i;
UWORD16 u2_sub_mb_num = 0x028A;
UWORD8 u1_b2 = uc_lx << 1;
u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0;
/* Default for Cabac */
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1);
for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
{
WORD8 i1_pred = (UWORD8)(u4_mb_pred_mode_tmp >> 24);
u1_mb_mc_mode_1 = (UWORD8)(u4_mb_mc_mode_tmp >> 24);
u4_mb_pred_mode_tmp <<= 8;
u4_mb_mc_mode_tmp <<= 8;
/* subMb prediction mode */
if(u1_sub_mb)
{
u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode_1];
u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode_1];
u1_sub_mb_num = u2_sub_mb_num >> 12;
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode_1 << 1);
u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode_1];
u2_sub_mb_num = u2_sub_mb_num << 4;
}
for(uc_j = 0; uc_j < u1_num_submb_part;
uc_j++, pu1_top_left_sub_mb_indx++)
{
mv_pred_t *ps_mv;
u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx;
ps_mv = ps_mv_start + u1_sub_mb_num;
/* Storing Info for partitions, writing only once */
if(uc_lx)
{
ps_part->u1_is_direct = (!i1_pred);
ps_part->u1_pred_mode = i1_pred;
ps_part->u1_sub_mb_num = u1_sub_mb_num;
ps_part->u1_partheight = u1_mb_part_ht;
ps_part->u1_partwidth = u1_mb_part_wd;
/* Increment partition Index */
u1_p_idx++;
ps_part++;
}
ih264d_get_mvd_cabac(u1_sub_mb_num, u1_b2, u1_mb_part_wd,
u1_mb_part_ht,
(UWORD8)(i1_pred & u1_pred_mode), ps_dec,
ps_mv);
}
}
}
/* write back to the scratch partition info */
ps_dec->ps_part = ps_part;
ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part;
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_parse_bmb_cabac \endif
*
* \brief
* This function parses CABAC syntax of a B MB.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 ih264d_parse_bmb_cabac(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_mb_num,
UWORD8 u1_num_mbsNby2)
{
UWORD8 u1_cbp;
deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num;
const UWORD8 *puc_mb_mc_mode = (const UWORD8 *)gau1_ih264d_mb_mc_mode;
UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
WORD32 ret;
UWORD8 u1_Bdirect_tranform_read = 1;
ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1;
ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type];
ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE;
if(u1_mb_type != B_DIRECT)
{
ret = ih264d_parse_bmb_non_direct_cabac(ps_dec, ps_cur_mb_info, u1_mb_num,
u1_num_mbsNby2);
if(ret != OK)
return ret;
}
else
{
/************ STORING PARTITION INFO ***********/
parse_part_params_t * ps_part_info;
ps_part_info = ps_dec->ps_part;
ps_part_info->u1_is_direct = PART_DIRECT_16x16;
ps_part_info->u1_sub_mb_num = 0;
ps_dec->ps_part++;
p_curr_ctxt->u1_mb_type = CAB_BD16x16;
MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);
memset(ps_dec->pi1_left_ref_idx_ctxt_inc, 0, 4);
MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0);
memset(p_curr_ctxt->i1_ref_idx, 0, 4);
/* check whether transform8x8 u4_flag to be read or not */
u1_Bdirect_tranform_read =
ps_dec->s_high_profile.u1_direct_8x8_inference_flag;
}
/* Read the Coded block pattern */
u1_cbp = (WORD8)ih264d_parse_ctx_cbp_cabac(ps_dec);
p_curr_ctxt->u1_cbp = u1_cbp;
ps_cur_mb_info->u1_cbp = u1_cbp;
if(u1_cbp > 47)
return ERROR_CBP;
COPYTHECONTEXT("coded_block_pattern", u1_cbp);
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & (0xf))
&& (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag)
&& (u1_Bdirect_tranform_read))
{
ps_cur_mb_info->u1_tran_form8x8 = ih264d_parse_transform8x8flag_cabac(
ps_dec, ps_cur_mb_info);
COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
}
else
{
p_curr_ctxt->u1_transform8x8_ctxt = 0;
}
p_curr_ctxt->u1_intra_chroma_pred_mode = 0;
p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
/* Read mb_qp_delta */
if(u1_cbp)
{
WORD8 c_temp;
ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &c_temp);
if(ret != OK)
return ret;
COPYTHECONTEXT("mb_qp_delta", c_temp);
if(c_temp)
{
ret = ih264d_update_qp(ps_dec, c_temp);
if(ret != OK)
return ret;
}
}
else
ps_dec->i1_prev_mb_qp_delta = 0;
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 : ih264d_parse_bmb_cavlc \endif
*
* \brief
* This function parses CAVLC syntax of a B MB.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 ih264d_parse_bmb_cavlc(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_mb_num,
UWORD8 u1_num_mbsNby2)
{
UWORD32 u4_cbp;
deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num;
dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 * pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
const UWORD8 *puc_mb_mc_mode = (const UWORD8 *)gau1_ih264d_mb_mc_mode;
UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
WORD32 ret;
UWORD8 u1_Bdirect_tranform_read = 1;
ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type];
ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE;
if(u1_mb_type != B_DIRECT)
{
ret = ih264d_parse_bmb_non_direct_cavlc(ps_dec, ps_cur_mb_info, u1_mb_num,
u1_num_mbsNby2);
if(ret != OK)
return ret;
}
else
{
/************ STORING PARTITION INFO ***********/
parse_part_params_t * ps_part_info;
ps_part_info = ps_dec->ps_part;
ps_part_info->u1_is_direct = PART_DIRECT_16x16;
ps_part_info->u1_sub_mb_num = 0;
ps_dec->ps_part++;
/* check whether transform8x8 u4_flag to be read or not */
u1_Bdirect_tranform_read =
ps_dec->s_high_profile.u1_direct_8x8_inference_flag;
}
/* Read the Coded block pattern */
{
const UWORD8 * puc_CbpInter = gau1_ih264d_cbp_inter;
//Inlined ih264d_uev
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
u4_cbp = ((1 << u4_ldz) + u4_word - 1);
//Inlined ih264d_uev
if(u4_cbp > 47)
return ERROR_CBP;
u4_cbp = puc_CbpInter[u4_cbp];
if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & (0xf))
&& (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag)
&& (u1_Bdirect_tranform_read))
{
ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
}
}
COPYTHECONTEXT("coded_block_pattern", u4_cbp);
ps_cur_mb_info->u1_cbp = u4_cbp;
/* Read mb_qp_delta */
if(u4_cbp)
{
WORD32 i_temp;
//inlining ih264d_sev
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_abs_val;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
if(u4_word & 0x1)
i_temp = (-(WORD32)u4_abs_val);
else
i_temp = (u4_abs_val);
if(i_temp < -26 || i_temp > 25)
return ERROR_INV_RANGE_QP_T;
//inlinined ih264d_sev
COPYTHECONTEXT("mb_qp_delta", i_temp);
if(i_temp)
{
ret = ih264d_update_qp(ps_dec, (WORD8)i_temp);
if(ret != OK)
return ret;
}
ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0);
if(ret != OK)
return ret;
if(EXCEED_OFFSET(ps_bitstrm))
return ERROR_EOB_TERMINATE_T;
}
else
{
ps_dec->i1_prev_mb_qp_delta = 0;
ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
}
return OK;
}
WORD32 ih264d_mv_pred_ref_tfr_nby2_bmb(dec_struct_t * ps_dec,
UWORD8 u1_mb_idx,
UWORD8 u1_num_mbs)
{
parse_pmbarams_t * ps_mb_part_info;
parse_part_params_t * ps_part;
mv_pred_t *ps_mv_nmb, *ps_mv_nmb_start, *ps_mv_ntop, *ps_mv_ntop_start;
pic_buffer_t * ps_ref_frame;
UWORD8 u1_direct_mode_width;
UWORD8 i, j;
dec_mb_info_t * ps_cur_mb_info;
const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
UWORD8 u1_field;
WORD32 ret = 0;
ps_dec->i4_submb_ofst -= (u1_num_mbs - u1_mb_idx) << 4;
ps_mb_part_info = ps_dec->ps_parse_mb_data;
ps_part = ps_dec->ps_parse_part_params;
/* N/2 Mb MvPred and Transfer Setup Loop */
for(i = u1_mb_idx; i < u1_num_mbs; i++, ps_mb_part_info++)
{
UWORD8 u1_colz = 0;
ps_dec->i4_submb_ofst += SUB_BLK_SIZE;
/* Restore the slice scratch MbX and MbY context */
ps_cur_mb_info = ps_dec->ps_nmb_info + i;
ps_dec->u2_wait_id = i;
u1_field = ps_cur_mb_info->u1_mb_field_decodingflag;
ps_mv_nmb_start = ps_dec->ps_mv_cur + (i << 4);
ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx;
ps_dec->u2_mby = ps_cur_mb_info->u2_mby;
ps_dec->u1_currB_type = 0;
ps_dec->u2_mv_2mb[i & 0x1] = 0;
/* Look for MV Prediction and Reference Transfer in Non-I Mbs */
if(!ps_mb_part_info->u1_isI_mb)
{
UWORD8 u1_blk_no;
WORD16 i1_ref_idx, i1_ref_idx1;
UWORD8 u1_pred_mode;
UWORD8 u1_sub_mb_x, u1_sub_mb_y, u1_sub_mb_num;
UWORD8 u1_lx, u1_lx_start, u1_lxend, u1_tmp_lx;
UWORD8 u1_num_part, u1_num_ref, u1_wd, u1_ht;
UWORD32 *pu4_wt_offst;
UWORD8 u1_scale_ref, u4_bot_mb;
deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + i;
WORD8 (*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] =
ps_mb_part_info->i1_ref_idx;
WORD8 *pi1_ref_idx0 = pi1_ref_idx[0],
*pi1_ref_idx1 = pi1_ref_idx[1];
UWORD32 **ppu4_wt_ofst = ps_mb_part_info->pu4_wt_offst;
/* MB Level initialisations */
ps_dec->u4_num_pmbair = i >> u1_mbaff;
ps_dec->u1_mb_idx_mv = i;
/* CHANGED CODE */
ps_mv_ntop_start = ps_mv_nmb_start
- (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12;
u1_num_part = ps_mb_part_info->u1_num_part;
ps_cur_deblk_mb->u1_mb_type |= (u1_num_part > 1) << 1;
u1_direct_mode_width = (1 == ps_mb_part_info->u1_num_part) ? 16 : 8;
ps_cur_mb_info->u4_pred_info_pkd_idx = ps_dec->u4_pred_info_pkd_idx;
ps_cur_mb_info->u1_num_pred_parts = 0;
/****************************************************/
/* weighted u4_ofst pointer calculations, this loop */
/* runs maximum 4 times, even in direct cases */
/****************************************************/
u1_scale_ref = u1_mbaff & ps_cur_mb_info->u1_mb_field_decodingflag;
u4_bot_mb = 1 - ps_cur_mb_info->u1_topmb;
if(ps_dec->ps_cur_pps->u1_wted_bipred_idc)
{
u1_num_ref = MIN(u1_num_part, 4);
if(PART_DIRECT_16x16 != ps_part->u1_is_direct)
{
for(u1_blk_no = 0; u1_blk_no < u1_num_ref; u1_blk_no++)
{
i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0);
if(u1_scale_ref)
i1_ref_idx >>= 1;
i1_ref_idx *=
ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
if(u1_scale_ref)
i1_ref_idx +=
(MAX(pi1_ref_idx1[u1_blk_no], 0)
>> 1);
else
i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0);
pu4_wt_offst = (UWORD32*)&ps_dec->pu4_wt_ofsts[2
* X3(i1_ref_idx)];
if(pi1_ref_idx0[u1_blk_no] < 0)
pu4_wt_offst += 1;
ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;
if(u1_scale_ref
&& (ps_dec->ps_cur_pps->u1_wted_bipred_idc
== 2))
{
i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0);
i1_ref_idx *=
(ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]
<< 1);
i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0);
if(u4_bot_mb)
{
i1_ref_idx +=
(ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]
<< 1)
* (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]
<< 1);
}
pu4_wt_offst = (UWORD32*)&ps_dec->pu4_mbaff_wt_mat[2
* X3(i1_ref_idx)];
ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;
}
}
}
}
/**************************************************/
/* Loop on Partitions */
/* direct mode is reflected as a single partition */
/**************************************************/
for(j = 0; j < u1_num_part; j++, ps_part++)
{
u1_sub_mb_num = ps_part->u1_sub_mb_num;
ps_dec->u1_sub_mb_num = u1_sub_mb_num;
if(PART_NOT_DIRECT != ps_part->u1_is_direct)
{
/**************************************************/
/* Direct Mode, Call DecodeSpatial/TemporalDirect */
/* only (those will in turn call FormMbPartInfo) */
/**************************************************/
ret = ps_dec->ps_cur_slice->pf_decodeDirect(ps_dec,
u1_direct_mode_width,
ps_cur_mb_info, i);
if(ret != OK)
return ret;
ps_cur_deblk_mb->u1_mb_type |= (ps_dec->u1_currB_type << 1);
}
else
{
mv_pred_t s_mvPred;
/**************************************************/
/* Non Direct Mode, Call Motion Vector Predictor */
/* and FormMbpartInfo */
/**************************************************/
u1_sub_mb_x = u1_sub_mb_num & 0x03;
u1_sub_mb_y = u1_sub_mb_num >> 2;
u1_blk_no =
(u1_num_part < 4) ?
j :
(((u1_sub_mb_y >> 1) << 1)
+ (u1_sub_mb_x
>> 1));
ps_mv_ntop = ps_mv_ntop_start + u1_sub_mb_x;
ps_mv_nmb = ps_mv_nmb_start + u1_sub_mb_num;
u1_pred_mode = ps_part->u1_pred_mode;
u1_wd = ps_part->u1_partwidth;
u1_ht = ps_part->u1_partheight;
u1_lx_start = 0;
u1_lxend = 2;
if( PRED_L0 == u1_pred_mode)
{
s_mvPred.i2_mv[2] = 0;
s_mvPred.i2_mv[3] = 0;
u1_lxend = 1;
}
if( PRED_L1 == u1_pred_mode)
{
s_mvPred.i2_mv[0] = 0;
s_mvPred.i2_mv[1] = 0;
u1_lx_start = 1;
}
/* Populate the colpic info and reference frames */
s_mvPred.i1_ref_frame[0] = pi1_ref_idx0[u1_blk_no];
s_mvPred.i1_ref_frame[1] = pi1_ref_idx1[u1_blk_no];
ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb, ps_mv_ntop,
&s_mvPred, u1_sub_mb_num, u1_wd,
u1_lx_start, u1_lxend,
ps_cur_mb_info->u1_mb_mc_mode);
/**********************************************************/
/* Loop on number of predictors, 1 Each for Forw Backw */
/* Loop 2 times for BiDirect mode */
/**********************************************************/
for(u1_lx = u1_lx_start; u1_lx < u1_lxend; u1_lx++)
{
WORD16 i2_mv_x, i2_mv_y;
/********************************************************/
/* Predict Mv */
/* Add Mv Residuals and store back */
/********************************************************/
i1_ref_idx = s_mvPred.i1_ref_frame[u1_lx];
u1_tmp_lx = (u1_lx << 1);
i2_mv_x = ps_mv_nmb->i2_mv[u1_tmp_lx];
i2_mv_y = ps_mv_nmb->i2_mv[u1_tmp_lx + 1];
i2_mv_x += s_mvPred.i2_mv[u1_tmp_lx];
i2_mv_y += s_mvPred.i2_mv[u1_tmp_lx + 1];
s_mvPred.i2_mv[u1_tmp_lx] = i2_mv_x;
s_mvPred.i2_mv[u1_tmp_lx + 1] = i2_mv_y;
/********************************************************/
/* Transfer setup call */
/* convert RefIdx if it is MbAff */
/* Pass Weight Offset and refFrame */
/********************************************************/
i1_ref_idx1 = i1_ref_idx >> u1_scale_ref;
if(u1_scale_ref && ((i1_ref_idx & 0x01) != u4_bot_mb))
i1_ref_idx1 += MAX_REF_BUFS;
ps_ref_frame =
ps_dec->ps_ref_pic_buf_lx[u1_lx][i1_ref_idx1];
/* Storing Colocated-Zero u4_flag */
if(u1_lx == u1_lx_start)
{
/* Fill colocated info in MvPred structure */
s_mvPred.u1_col_ref_pic_idx =
ps_ref_frame->u1_mv_buf_id;
s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type;
/* Calculating colocated zero information */
u1_colz =
(u1_field << 1)
| ((i1_ref_idx == 0)
&& (ABS(i2_mv_x)
<= 1)
&& (ABS(i2_mv_y)
<= 1));
u1_colz |= ps_mb_part_info->u1_col_info[u1_blk_no];
}
pu4_wt_offst = ppu4_wt_ofst[u1_blk_no];
{
pred_info_pkd_t *ps_pred_pkd;
WORD16 i2_mv[2];
i2_mv[0] = i2_mv_x;
i2_mv[1] = i2_mv_y;
ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
ih264d_fill_pred_info(i2_mv,u1_wd,u1_ht,u1_sub_mb_num,u1_pred_mode,
ps_pred_pkd,ps_ref_frame->u1_pic_buf_id,i1_ref_idx,pu4_wt_offst,
ps_ref_frame->u1_pic_type);
ps_dec->u4_pred_info_pkd_idx++;
ps_cur_mb_info->u1_num_pred_parts++;
}
}
ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb,
u1_sub_mb_num, u1_colz, u1_ht,
u1_wd);
}
}
}
else
{
/* Set zero values in case of Intra Mbs */
mv_pred_t s_mvPred =
{
{ 0, 0, 0, 0 },
{ -1, -1 }, 0, 0};
/* Storing colocated zero information */
ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
(UWORD8)(u1_field << 1), 4, 4);
}
/*if num _cores is set to 3 ,compute bs will be done in another thread*/
if(ps_dec->u4_num_cores < 3)
{
if(ps_dec->u4_app_disable_deblk_frm == 0)
ps_dec->pf_compute_bs(ps_dec, ps_cur_mb_info,
(UWORD16)(i >> u1_mbaff));
}
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_get_implicit_weights \endif
*
* \brief
* Calculates Implicit Weights.
*
* \return
* None
*
**************************************************************************
*/
void ih264d_get_implicit_weights(dec_struct_t *ps_dec)
{
UWORD32 *pu4_iwt_ofst;
UWORD8 i, j;
struct pic_buffer_t *ps_pic_buff0, *ps_pic_buff1;
WORD16 i2_dist_scale_factor;
WORD16 i16_tb, i16_td, i16_tx;
UWORD32 u4_poc0, u4_poc1;
UWORD32 ui_temp0, ui_temp1;
UWORD8 uc_num_ref_idx_l0_active, uc_num_ref_idx_l1_active;
pu4_iwt_ofst = ps_dec->pu4_wts_ofsts_mat;
uc_num_ref_idx_l0_active =
ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0];
uc_num_ref_idx_l1_active =
ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
for(i = 0; i < uc_num_ref_idx_l0_active; i++)
{
ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][i];
u4_poc0 = ps_pic_buff0->i4_avg_poc;
for(j = 0; j < uc_num_ref_idx_l1_active; j++)
{
ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][j];
u4_poc1 = ps_pic_buff1->i4_avg_poc;
if(u4_poc1 != u4_poc0)
{
i16_tb = ps_dec->ps_cur_pic->i4_poc - u4_poc0;
i16_tb = CLIP3(-128, 127, i16_tb);
i16_td = u4_poc1 - u4_poc0;
i16_td = CLIP3(-128, 127, i16_td);
i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1))) / i16_td;
i2_dist_scale_factor = CLIP3(-1024, 1023,
(((i16_tb * i16_tx) + 32) >> 6));
if(/*((u4_poc1 - u4_poc0) == 0) ||*/
(!(ps_pic_buff1->u1_is_short && ps_pic_buff0->u1_is_short))
|| ((i2_dist_scale_factor >> 2) < -64)
|| ((i2_dist_scale_factor >> 2) > 128))
{
/* same for forward and backward, wt=32 and Offset = 0 */
ui_temp0 = 0x00000020;
ui_temp1 = 0x00000020;
}
else
{
ui_temp0 = 64 - (i2_dist_scale_factor >> 2);
ui_temp1 = (i2_dist_scale_factor >> 2);
}
}
else
{
ui_temp0 = 0x00000020;
ui_temp1 = 0x00000020;
}
pu4_iwt_ofst[0] = pu4_iwt_ofst[2] = pu4_iwt_ofst[4] = ui_temp0;
pu4_iwt_ofst[1] = pu4_iwt_ofst[3] = pu4_iwt_ofst[5] = ui_temp1;
pu4_iwt_ofst += 6;
}
}
if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
{
UWORD8 k;
WORD32 i4_cur_poc = ps_dec->ps_cur_pic->i4_top_field_order_cnt;
UWORD32* pu4_wt_mat = ps_dec->pu4_mbaff_wt_mat;
/* Form the Implicit Weighted prediction matrix for field MBs also */
for(k = 0; k < 2; k++)
{
for(i = 0; i < (uc_num_ref_idx_l0_active << 1); i++)
{
UWORD16 u2_l0_idx;
/*u2_l0_idx = (i >= uc_num_ref_idx_l0_active)
?(MAX_REF_BUFS + i - uc_num_ref_idx_l0_active) : (i) ;*/
u2_l0_idx = i >> 1;
if((i & 0x01) != k)
{
u2_l0_idx += MAX_REF_BUFS;
}
ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][u2_l0_idx];
u4_poc0 = ps_pic_buff0->i4_poc;
for(j = 0; j < (uc_num_ref_idx_l1_active << 1); j++)
{
UWORD16 u2_l1_idx;
/*u2_l1_idx = (j >= uc_num_ref_idx_l1_active)
? (MAX_REF_BUFS + j - uc_num_ref_idx_l1_active ) : (j) ;*/
u2_l1_idx = j >> 1;
if((j & 0x01) != k)
{
u2_l1_idx += MAX_REF_BUFS;
}
ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][u2_l1_idx];
u4_poc1 = ps_pic_buff1->i4_poc;
if(u4_poc1 != u4_poc0)
{
i16_tb = i4_cur_poc - u4_poc0;
i16_tb = CLIP3(-128, 127, i16_tb);
i16_td = u4_poc1 - u4_poc0;
i16_td = CLIP3(-128, 127, i16_td);
i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1)))
/ i16_td;
i2_dist_scale_factor = CLIP3(
-1024, 1023,
(((i16_tb * i16_tx) + 32) >> 6));
if(/*((u4_poc1 - u4_poc0) == 0) ||*/
(!(ps_pic_buff1->u1_is_short && ps_pic_buff0->u1_is_short))
|| ((i2_dist_scale_factor >> 2) < -64)
|| ((i2_dist_scale_factor >> 2) > 128))
{
/* same for forward and backward, wt=32 and Offset = 0 */
ui_temp0 = 0x00000020;
ui_temp1 = 0x00000020;
}
else
{
ui_temp0 = 64 - (i2_dist_scale_factor >> 2);
ui_temp1 = (i2_dist_scale_factor >> 2);
}
}
else
{
ui_temp0 = 0x00000020;
ui_temp1 = 0x00000020;
}
/* Store in the weight matrix */
*pu4_wt_mat++ = ui_temp0;
*pu4_wt_mat++ = ui_temp1;
*pu4_wt_mat++ = ui_temp0;
*pu4_wt_mat++ = ui_temp1;
*pu4_wt_mat++ = ui_temp0;
*pu4_wt_mat++ = ui_temp1;
}
}
i4_cur_poc = ps_dec->ps_cur_pic->i4_bottom_field_order_cnt;
}
}
}
/*!
**************************************************************************
* \if Function name : ih264d_decode_bslice \endif
*
* \brief
* Decodes a B Slice
*
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 ih264d_parse_bslice(dec_struct_t * ps_dec, UWORD16 u2_first_mb_in_slice)
{
dec_pic_params_t * ps_pps = ps_dec->ps_cur_pps;
dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice;
dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm;
UWORD8 u1_ref_idx_re_flag_lx;
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
UWORD32 u4_temp, ui_temp1;
WORD32 i_temp;
WORD32 ret;
/*--------------------------------------------------------------------*/
/* 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_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(
ps_bitstrm);
COPYTHECONTEXT("SH: num_ref_idx_override_flag",
ps_slice->u1_num_ref_idx_active_override_flag);
u4_temp = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0];
ui_temp1 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[1];
if(ps_slice->u1_num_ref_idx_active_override_flag)
{
u4_temp = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1",
u4_temp - 1);
ui_temp1 = 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
COPYTHECONTEXT("SH: num_ref_idx_l1_active_minus1",
ui_temp1 - 1);
}
{
UWORD8 u1_max_ref_idx = MAX_FRAMES;
if(ps_slice->u1_field_pic_flag)
{
u1_max_ref_idx = MAX_FRAMES << 1;
}
if((u4_temp > u1_max_ref_idx) || (ui_temp1 > u1_max_ref_idx))
{
return ERROR_NUM_REF;
}
ps_slice->u1_num_ref_idx_lx_active[0] = u4_temp;
ps_slice->u1_num_ref_idx_lx_active[1] = ui_temp1;
}
/* Initialize the Reference list once in Picture if the slice type */
/* of first slice is between 5 to 9 defined in table 7.3 of standard */
/* If picture contains both P & B slices then Initialize the Reference*/
/* List only when it switches from P to B and B to P */
{
UWORD8 init_idx_flg = (ps_dec->u1_pr_sl_type
!= ps_dec->ps_cur_slice->u1_slice_type);
if(ps_dec->u1_first_pb_nal_in_pic
|| (init_idx_flg & !ps_dec->u1_sl_typ_5_9)
|| ps_dec->u1_num_ref_idx_lx_active_prev
!= ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0])
ih264d_init_ref_idx_lx_b(ps_dec);
if(ps_dec->u1_first_pb_nal_in_pic & ps_dec->u1_sl_typ_5_9)
ps_dec->u1_first_pb_nal_in_pic = 0;
}
/* Store the value for future slices in the same picture */
ps_dec->u1_num_ref_idx_lx_active_prev =
ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0];
u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0",u1_ref_idx_re_flag_lx);
/* Modified temporarily */
if(u1_ref_idx_re_flag_lx)
{
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;
}
else
ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0];
u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l1",u1_ref_idx_re_flag_lx);
/* Modified temporarily */
if(u1_ref_idx_re_flag_lx)
{
WORD8 ret;
ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_mod_dpb[1];
ret = ih264d_ref_idx_reordering(ps_dec, 1);
if(ret == -1)
return ERROR_REFIDX_ORDER_T;
}
else
ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_init_dpb[1];
/* Create refIdx to POC mapping */
{
void **ppv_map_ref_idx_to_poc_lx;
WORD8 idx;
struct pic_buffer_t *ps_pic;
ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0;
ppv_map_ref_idx_to_poc_lx[0] = 0;
ppv_map_ref_idx_to_poc_lx++;
for(idx = 0; idx < ps_dec->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[idx] = (ps_pic->pu1_buf1);
}
ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1;
ppv_map_ref_idx_to_poc_lx[0] = 0;
ppv_map_ref_idx_to_poc_lx++;
for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
idx++)
{
ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx];
ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1);
}
if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
{
void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b;
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++;
for(idx = 0; idx < ps_dec->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_t = ps_dec->ppv_map_ref_idx_to_poc
+ TOP_LIST_FLD_L1;
ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc
+ BOT_LIST_FLD_L1;
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++;
for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
idx++)
{
UWORD8 u1_tmp_idx = idx << 1;
ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx];
ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx] = (ps_pic->pu1_buf1);
ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx + 1] = (ps_pic->pu1_buf1);
ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx] = (ps_pic->pu1_buf1) + 1;
ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx + 1] = (ps_pic->pu1_buf1) + 1;
}
}
if(ps_dec->u4_num_cores >= 3)
{
WORD32 num_entries;
WORD32 size;
num_entries = MIN(MAX_FRAMES, ps_dec->u4_num_ref_frames_at_init);
num_entries = 2 * ((2 * num_entries) + 1);
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_dec->ps_cur_slice->u1_mbaff_frame_flag
&& (ps_dec->ps_cur_slice->u1_field_pic_flag == 0))
{
ih264d_convert_frm_mbaff_list(ps_dec);
}
if(ps_pps->u1_wted_bipred_idc == 1)
{
ret = ih264d_parse_pred_weight_table(ps_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 if(ps_pps->u1_wted_bipred_idc == 2)
{
/* Implicit Weighted prediction */
ps_slice->u2_log2Y_crwd = 0x0505;
ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
ih264d_get_implicit_weights(ps_dec);
}
else
ps_dec->ps_cur_slice->u2_log2Y_crwd = 0;
ps_dec->ps_parse_cur_slice->u2_log2Y_crwd =
ps_dec->ps_cur_slice->u2_log2Y_crwd;
/* G050 */
if(ps_slice->u1_nal_ref_idc != 0)
{
if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
ps_dec->u4_bitoffset = ih264d_read_mmco_commands(ps_dec);
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_slice->u1_cabac_init_idc = u4_temp;
COPYTHECONTEXT("SH: cabac_init_idc",ps_slice->u1_cabac_init_idc);
}
/* Read slice_qp_delta */
i_temp = ps_pps->u1_pic_init_qp
+ ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
if((i_temp < 0) || (i_temp > 51))
{
return ERROR_INV_RANGE_QP_T;
}
ps_slice->u1_slice_qp = i_temp;
COPYTHECONTEXT("SH: slice_qp_delta",
(WORD8)(ps_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_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_slice->i1_slice_alpha_c0_offset = i_temp;
COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
ps_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_slice->i1_slice_beta_offset = i_temp;
COPYTHECONTEXT("SH: slice_beta_offset_div2",
ps_slice->i1_slice_beta_offset >> 1);
}
else
{
ps_slice->i1_slice_alpha_c0_offset = 0;
ps_slice->i1_slice_beta_offset = 0;
}
}
else
{
ps_slice->u1_disable_dblk_filter_idc = 0;
ps_slice->i1_slice_alpha_c0_offset = 0;
ps_slice->i1_slice_beta_offset = 0;
}
ps_dec->u1_slice_header_done = 2;
if(ps_pps->u1_entropy_coding_mode)
{
SWITCHOFFTRACE; SWITCHONTRACECABAC;
ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac;
ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cabac;
ih264d_init_cabac_contexts(B_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 = ih264d_get_mb_info_cabac_nonmbaff;
}
else
{
SWITCHONTRACE; SWITCHOFFTRACECABAC;
ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cavlc;
ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_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 = ih264d_get_mb_info_cavlc_nonmbaff;
}
ret = ih264d_cal_col_pic(ps_dec);
if(ret != OK)
return ret;
ps_dec->u1_B = 1;
ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_bmb;
ret = ps_dec->pf_parse_inter_slice(ps_dec, ps_slice, u2_first_mb_in_slice);
if(ret != OK)
return ret;
return OK;
}
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