/******************************************************************************
*
* 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;
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 = 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);
if(BASE_PROFILE_IDC != ps_dec->ps_cur_sps->u1_profile_idc)
{
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_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;
}