blob: 72064ed7a415ec3a8482cfb14563b5b27550a2ee [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
/*!
**************************************************************************
* \file ih264d_parse_pslice.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_mvpred.h"
#include "ih264d_parse_islice.h"
#include "ih264d_process_intra_mb.h"
#include "ih264d_inter_pred.h"
#include "ih264d_process_pslice.h"
#include "ih264d_deblocking.h"
#include "ih264d_cabac.h"
#include "ih264d_parse_mb_header.h"
#include "ih264d_error_handler.h"
#include "ih264d_defs.h"
#include "ih264d_format_conv.h"
#include "ih264d_quant_scaling.h"
#include "ih264d_thread_parse_decode.h"
#include "ih264d_thread_compute_bs.h"
#include "ih264d_process_bslice.h"
#include "ithread.h"
#include "ih264d_utils.h"
#include "ih264d_format_conv.h"
void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec);
void ih264d_deblock_mb_level(dec_struct_t *ps_dec,
dec_mb_info_t *ps_cur_mb_info,
UWORD32 nmb_index);
/*!
**************************************************************************
* \if Function name : ih264d_parse_pmb_cavlc \endif
*
* \brief
* This function parses CAVLC syntax of a P MB.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 ih264d_parse_pmb_cavlc(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_mb_num,
UWORD8 u1_num_mbsNby2)
{
UWORD32 u1_num_mb_part;
UWORD32 uc_sub_mb;
dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 * const pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data
+ u1_num_mbsNby2;
WORD8 * pi1_ref_idx = ps_parse_mb_data->i1_ref_idx[0];
const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part;
UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info;
UWORD32 u1_mb_type = ps_cur_mb_info->u1_mb_type;
UWORD32 u4_sum_mb_mode_pack = 0;
WORD32 ret;
UWORD8 u1_no_submb_part_size_lt8x8_flag = 1;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
ps_cur_mb_info->u1_mb_mc_mode = u1_mb_type;
uc_sub_mb = ((u1_mb_type == PRED_8x8) | (u1_mb_type == PRED_8x8R0));
/* Reading the subMB type */
if(uc_sub_mb)
{
WORD32 i;
UWORD8 u1_colz = (PRED_8x8 << 6);
for(i = 0; i < 4; i++)
{
UWORD32 ui_sub_mb_mode;
//Inlined ih264d_uev
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf,
u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
ui_sub_mb_mode = ((1 << u4_ldz) + u4_word - 1);
//Inlined ih264d_uev
if(ui_sub_mb_mode > 3)
{
return ERROR_SUB_MB_TYPE;
}
else
{
u4_sum_mb_mode_pack = (u4_sum_mb_mode_pack << 8) | ui_sub_mb_mode;
/* Storing collocated information */
*pu1_col_info++ = u1_colz | (UWORD8)(ui_sub_mb_mode << 4);
COPYTHECONTEXT("sub_mb_type", ui_sub_mb_mode);
}
/* check if Motion compensation is done below 8x8 */
if(ui_sub_mb_mode != P_L0_8x8)
{
u1_no_submb_part_size_lt8x8_flag = 0;
}
}
//
u1_num_mb_part = 4;
}
else
{
*pu1_col_info++ = (u1_mb_type << 6);
if(u1_mb_type)
*pu1_col_info++ = (u1_mb_type << 6);
u1_num_mb_part = pu1_num_mb_part[u1_mb_type];
}
/* Decoding reference index 0: For simple profile the following */
/* conditions are always true (mb_field_decoding_flag == 0); */
/* (MbPartPredMode != PredL1) */
{
UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
UWORD8 uc_num_ref_idx_l0_active_minus1 =
(ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]
<< (u1_mbaff & uc_field)) - 1;
if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0))
{
if(1 == uc_num_ref_idx_l0_active_minus1)
ih264d_parse_pmb_ref_index_cavlc_range1(
u1_num_mb_part, ps_bitstrm, pi1_ref_idx,
uc_num_ref_idx_l0_active_minus1);
else
{
ret = ih264d_parse_pmb_ref_index_cavlc(
u1_num_mb_part, ps_bitstrm, pi1_ref_idx,
uc_num_ref_idx_l0_active_minus1);
if(ret != OK)
return ret;
}
}
else
{
/* When there exists only a single frame to predict from */
UWORD8 uc_i;
for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
/* Storing Reference Idx Information */
pi1_ref_idx[uc_i] = 0;
}
}
{
UWORD8 u1_p_idx, uc_i;
parse_part_params_t * ps_part = ps_dec->ps_part;
UWORD8 u1_sub_mb_mode, u1_num_subpart, u1_mb_part_width, u1_mb_part_height;
UWORD8 u1_sub_mb_num;
const UWORD8 * pu1_top_left_sub_mb_indx;
mv_pred_t * ps_mv, *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
/* Loading the table pointers */
const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw;
const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth;
const UWORD8 * pu1_sub_mb_indx_mod =
(const UWORD8 *)(gau1_ih264d_submb_indx_mod)
+ (uc_sub_mb * 6);
const UWORD8 * pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw;
const UWORD8 * pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth;
const UWORD8 * pu1_num_sub_mb_part =
(const UWORD8 *)gau1_ih264d_num_submb_part;
UWORD16 u2_sub_mb_num = 0x028A;
/*********************************************************/
/* default initialisations for condition (uc_sub_mb == 0) */
/* i.e. all are subpartitions of 8x8 */
/*********************************************************/
u1_sub_mb_mode = 0;
u1_num_subpart = 1;
u1_mb_part_width = pu1_mb_partw[u1_mb_type];
u1_mb_part_height = pu1_mb_parth[u1_mb_type];
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_type << 1);
u1_sub_mb_num = 0;
/* Loop on number of partitions */
for(uc_i = 0, u1_p_idx = 0; uc_i < u1_num_mb_part; uc_i++)
{
UWORD8 uc_j;
if(uc_sub_mb)
{
u1_sub_mb_mode = u4_sum_mb_mode_pack >> 24;
u1_num_subpart = pu1_num_sub_mb_part[u1_sub_mb_mode];
u1_mb_part_width = pu1_sub_mb_partw[u1_sub_mb_mode];
u1_mb_part_height = pu1_sub_mb_parth[u1_sub_mb_mode];
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_sub_mb_mode << 1);
u1_sub_mb_num = u2_sub_mb_num >> 12;
u4_sum_mb_mode_pack <<= 8;
u2_sub_mb_num <<= 4;
}
/* Loop on Number of sub-partitions */
for(uc_j = 0; uc_j < u1_num_subpart; uc_j++, pu1_top_left_sub_mb_indx++)
{
WORD16 i2_mvx, i2_mvy;
u1_sub_mb_num += *pu1_top_left_sub_mb_indx;
ps_mv = ps_mv_start + u1_sub_mb_num;
/* Reading the differential Mv from the bitstream */
//i2_mvx = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
//inlining ih264d_sev
{
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_abs_val;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset,
pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset,
pu4_bitstrm_buf, u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
if(u4_word & 0x1)
i2_mvx = (-(WORD32)u4_abs_val);
else
i2_mvx = (u4_abs_val);
}
//inlinined ih264d_sev
COPYTHECONTEXT("MVD", i2_mvx);
i2_mvy = ih264d_sev(pu4_bitstrm_ofst,
pu4_bitstrm_buf);
COPYTHECONTEXT("MVD", i2_mvy);
/* Storing Info for partitions */
ps_part->u1_is_direct = PART_NOT_DIRECT;
ps_part->u1_sub_mb_num = u1_sub_mb_num;
ps_part->u1_partheight = u1_mb_part_height;
ps_part->u1_partwidth = u1_mb_part_width;
/* Storing Mv residuals */
ps_mv->i2_mv[0] = i2_mvx;
ps_mv->i2_mv[1] = i2_mvy;
/* Increment partition Index */
u1_p_idx++;
ps_part++;
}
}
ps_parse_mb_data->u1_num_part = u1_p_idx;
ps_dec->ps_part = ps_part;
}
{
UWORD32 u4_cbp;
/* Read the Coded block pattern */
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
u4_cbp = ((1 << u4_ldz) + u4_word - 1);
if(u4_cbp > 47)
return ERROR_CBP;
u4_cbp = *((UWORD8*)gau1_ih264d_cbp_inter + u4_cbp);
COPYTHECONTEXT("coded_block_pattern", u4_cbp);
ps_cur_mb_info->u1_cbp = u4_cbp;
/* Read the transform8x8 u4_flag if present */
if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & 0xf)
&& u1_no_submb_part_size_lt8x8_flag)
{
ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
}
/* Read mb_qp_delta */
if(u4_cbp)
{
WORD32 i_temp;
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_abs_val;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf,
u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
if(u4_word & 0x1)
i_temp = (-(WORD32)u4_abs_val);
else
i_temp = (u4_abs_val);
if((i_temp < -26) || (i_temp > 25))
return ERROR_INV_RANGE_QP_T;
//inlinined ih264d_sev
COPYTHECONTEXT("mb_qp_delta", i_temp);
if(i_temp)
{
ret = ih264d_update_qp(ps_dec, (WORD8)i_temp);
if(ret != OK)
return ret;
}
ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0);
if(ret != OK)
return ret;
if(EXCEED_OFFSET(ps_bitstrm))
return ERROR_EOB_TERMINATE_T;
}
else
{
ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
}
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_parse_pmb_cabac \endif
*
* \brief
* This function parses CABAC syntax of a P MB.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 ih264d_parse_pmb_cabac(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_mb_num,
UWORD8 u1_num_mbsNby2)
{
UWORD32 u1_num_mb_part;
UWORD32 uc_sub_mb;
parse_pmbarams_t * ps_parse_mb_data = ps_dec->ps_parse_mb_data
+ u1_num_mbsNby2;
WORD8 * pi1_ref_idx = ps_parse_mb_data->i1_ref_idx[0];
const UWORD8 * pu1_num_mb_part = (const UWORD8 *)gau1_ih264d_num_mb_part;
const UWORD32 u1_mb_type = ps_cur_mb_info->u1_mb_type;
UWORD8 * pu1_col_info = ps_parse_mb_data->u1_col_info;
UWORD32 u1_mb_mc_mode = u1_mb_type;
ctxt_inc_mb_info_t * p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
decoding_envirnoment_t * ps_cab_env = &ps_dec->s_cab_dec_env;
dec_bit_stream_t * ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 u4_sub_mb_pack = 0;
WORD32 ret;
UWORD8 u1_no_submb_part_size_lt8x8_flag = 1;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
p_curr_ctxt->u1_mb_type = CAB_P;
ps_cur_mb_info->u1_mb_mc_mode = u1_mb_type;
uc_sub_mb = ((u1_mb_type == PRED_8x8) | (u1_mb_type == PRED_8x8R0));
/* Reading the subMB type */
if(uc_sub_mb)
{
UWORD8 u1_colz = (PRED_8x8 << 6);
u1_mb_mc_mode = 0;
{
UWORD8 u1_sub_mb_mode;
u1_sub_mb_mode = ih264d_parse_submb_type_cabac(
0, ps_cab_env, ps_bitstrm,
ps_dec->p_sub_mb_type_t);
if(u1_sub_mb_mode > 3)
return ERROR_SUB_MB_TYPE;
u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
/* Storing collocated information */
*pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4));
COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
/* check if Motion compensation is done below 8x8 */
if(u1_sub_mb_mode != P_L0_8x8)
{
u1_no_submb_part_size_lt8x8_flag = 0;
}
}
{
UWORD8 u1_sub_mb_mode;
u1_sub_mb_mode = ih264d_parse_submb_type_cabac(
0, ps_cab_env, ps_bitstrm,
ps_dec->p_sub_mb_type_t);
if(u1_sub_mb_mode > 3)
return ERROR_SUB_MB_TYPE;
u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
/* Storing collocated information */
*pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4));
COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
/* check if Motion compensation is done below 8x8 */
if(u1_sub_mb_mode != P_L0_8x8)
{
u1_no_submb_part_size_lt8x8_flag = 0;
}
}
{
UWORD8 u1_sub_mb_mode;
u1_sub_mb_mode = ih264d_parse_submb_type_cabac(
0, ps_cab_env, ps_bitstrm,
ps_dec->p_sub_mb_type_t);
if(u1_sub_mb_mode > 3)
return ERROR_SUB_MB_TYPE;
u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
/* Storing collocated information */
*pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4));
COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
/* check if Motion compensation is done below 8x8 */
if(u1_sub_mb_mode != P_L0_8x8)
{
u1_no_submb_part_size_lt8x8_flag = 0;
}
}
{
UWORD8 u1_sub_mb_mode;
u1_sub_mb_mode = ih264d_parse_submb_type_cabac(
0, ps_cab_env, ps_bitstrm,
ps_dec->p_sub_mb_type_t);
if(u1_sub_mb_mode > 3)
return ERROR_SUB_MB_TYPE;
u4_sub_mb_pack = (u4_sub_mb_pack << 8) | u1_sub_mb_mode;
/* Storing collocated information */
*pu1_col_info++ = u1_colz | ((UWORD8)(u1_sub_mb_mode << 4));
COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
/* check if Motion compensation is done below 8x8 */
if(u1_sub_mb_mode != P_L0_8x8)
{
u1_no_submb_part_size_lt8x8_flag = 0;
}
}
u1_num_mb_part = 4;
}
else
{
u1_num_mb_part = pu1_num_mb_part[u1_mb_type];
/* Storing collocated Mb and SubMb mode information */
*pu1_col_info++ = (u1_mb_type << 6);
if(u1_mb_type)
*pu1_col_info++ = (u1_mb_type << 6);
}
/* Decoding reference index 0: For simple profile the following */
/* conditions are always true (mb_field_decoding_flag == 0); */
/* (MbPartPredMode != PredL1) */
{
WORD8 * pi1_top_ref_idx_ctx_inc_arr = p_curr_ctxt->i1_ref_idx;
WORD8 * pi1_left_ref_idx_ctxt_inc = ps_dec->pi1_left_ref_idx_ctxt_inc;
UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
UWORD8 uc_num_ref_idx_l0_active_minus1 =
(ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]
<< (u1_mbaff & uc_field)) - 1;
if((uc_num_ref_idx_l0_active_minus1 > 0) & (u1_mb_type != PRED_8x8R0))
{
/* force the routine to decode ref idx for each partition */
*((UWORD32 *)pi1_ref_idx) = 0x01010101;
ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0,
uc_num_ref_idx_l0_active_minus1,
u1_mb_mc_mode, pi1_ref_idx,
pi1_left_ref_idx_ctxt_inc,
pi1_top_ref_idx_ctx_inc_arr, ps_cab_env,
ps_bitstrm, ps_dec->p_ref_idx_t);
if(ret != OK)
return ret;
}
else
{
/* When there exists only a single frame to predict from */
pi1_left_ref_idx_ctxt_inc[0] = 0;
pi1_left_ref_idx_ctxt_inc[1] = 0;
pi1_top_ref_idx_ctx_inc_arr[0] = 0;
pi1_top_ref_idx_ctx_inc_arr[1] = 0;
*((UWORD32 *)pi1_ref_idx) = 0;
}
}
{
UWORD8 u1_p_idx, uc_i;
parse_part_params_t * ps_part = ps_dec->ps_part;
UWORD8 u1_sub_mb_mode, u1_num_subpart, u1_mb_part_width, u1_mb_part_height;
UWORD8 u1_sub_mb_num;
const UWORD8 * pu1_top_left_sub_mb_indx;
mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
UWORD16 u2_sub_mb_num_pack = 0x028A;
/* Loading the table pointers */
const UWORD8 * pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw;
const UWORD8 * pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth;
const UWORD8 * pu1_sub_mb_indx_mod =
(const UWORD8 *)(gau1_ih264d_submb_indx_mod)
+ (uc_sub_mb * 6);
const UWORD8 * pu1_sub_mb_partw = (const UWORD8 *)gau1_ih264d_submb_partw;
const UWORD8 * pu1_sub_mb_parth = (const UWORD8 *)gau1_ih264d_submb_parth;
const UWORD8 * pu1_num_sub_mb_part =
(const UWORD8 *)gau1_ih264d_num_submb_part;
/*********************************************************/
/* default initialisations for condition (uc_sub_mb == 0) */
/* i.e. all are subpartitions of 8x8 */
/*********************************************************/
u1_sub_mb_mode = 0;
u1_num_subpart = 1;
u1_mb_part_width = pu1_mb_partw[u1_mb_type];
u1_mb_part_height = pu1_mb_parth[u1_mb_type];
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_type << 1);
u1_sub_mb_num = 0;
/* Loop on number of partitions */
for(uc_i = 0, u1_p_idx = 0; uc_i < u1_num_mb_part; uc_i++)
{
UWORD8 uc_j;
if(uc_sub_mb)
{
u1_sub_mb_mode = u4_sub_mb_pack >> 24;
u1_num_subpart = pu1_num_sub_mb_part[u1_sub_mb_mode];
u1_mb_part_width = pu1_sub_mb_partw[u1_sub_mb_mode];
u1_mb_part_height = pu1_sub_mb_parth[u1_sub_mb_mode];
pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_sub_mb_mode << 1);
u1_sub_mb_num = u2_sub_mb_num_pack >> 12;
u4_sub_mb_pack <<= 8;
u2_sub_mb_num_pack <<= 4;
}
/* Loop on Number of sub-partitions */
for(uc_j = 0; uc_j < u1_num_subpart; uc_j++, pu1_top_left_sub_mb_indx++)
{
mv_pred_t * ps_mv;
u1_sub_mb_num += *pu1_top_left_sub_mb_indx;
ps_mv = ps_mv_start + u1_sub_mb_num;
/* Storing Info for partitions */
ps_part->u1_is_direct = PART_NOT_DIRECT;
ps_part->u1_sub_mb_num = u1_sub_mb_num;
ps_part->u1_partheight = u1_mb_part_height;
ps_part->u1_partwidth = u1_mb_part_width;
/* Increment partition Index */
u1_p_idx++;
ps_part++;
ih264d_get_mvd_cabac(u1_sub_mb_num, 0, u1_mb_part_width,
u1_mb_part_height, 1, ps_dec, ps_mv);
}
}
ps_parse_mb_data->u1_num_part = u1_p_idx;
ps_dec->ps_part = ps_part;
}
{
UWORD8 u1_cbp;
/* Read the Coded block pattern */
u1_cbp = (WORD8)ih264d_parse_ctx_cbp_cabac(ps_dec);
COPYTHECONTEXT("coded_block_pattern", u1_cbp);
ps_cur_mb_info->u1_cbp = u1_cbp;
p_curr_ctxt->u1_cbp = u1_cbp;
p_curr_ctxt->u1_intra_chroma_pred_mode = 0;
p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
if(u1_cbp > 47)
return ERROR_CBP;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
/* Read the transform8x8 u4_flag if present */
if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & 0xf)
&& u1_no_submb_part_size_lt8x8_flag)
{
ps_cur_mb_info->u1_tran_form8x8 = ih264d_parse_transform8x8flag_cabac(
ps_dec, ps_cur_mb_info);
COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
}
else
{
p_curr_ctxt->u1_transform8x8_ctxt = 0;
}
/* Read mb_qp_delta */
if(u1_cbp)
{
WORD8 c_temp;
ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &c_temp);
if(ret != OK)
return ret;
COPYTHECONTEXT("mb_qp_delta", c_temp);
if(c_temp != 0)
{
ret = ih264d_update_qp(ps_dec, c_temp);
if(ret != OK)
return ret;
}
}
else
ps_dec->i1_prev_mb_qp_delta = 0;
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 : parsePSliceData \endif
*
* \brief
* This function parses CAVLC syntax of N MB's of a P slice.
* 1. After parsing syntax of N MB's, for those N MB's (less than N, incase
* of end of slice or end of row), MB is decoded. This process is carried
* for one complete MB row or till end of slice.
* 2. Bottom one row of current MB is copied to IntraPredLine buffers.
* IntraPredLine buffers are used for Intra prediction of next row.
* 3. Current MB row along with previous 4 rows of Luma (and 2 of Chroma) are
* deblocked.
* 4. 4 rows (2 for Chroma) previous row and 12 rows (6 for Chroma) are
* DMA'ed to picture buffers.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
/*!
**************************************************************************
* \if Function name : ih264d_update_nnz_for_skipmb \endif
*
* \brief
*
* \return
* None
*
**************************************************************************
*/
void ih264d_update_nnz_for_skipmb(dec_struct_t * ps_dec,
dec_mb_info_t * ps_cur_mb_info,
UWORD8 u1_entrpy)
{
UWORD32 *pu4_buf;
UWORD8 *pu1_buf;
UNUSED(u1_entrpy);
pu1_buf = ps_dec->pu1_left_nnz_y;
pu4_buf = (UWORD32 *)pu1_buf;
*pu4_buf = 0;
pu1_buf = ps_dec->pu1_left_nnz_uv;
pu4_buf = (UWORD32 *)pu1_buf;
*pu4_buf = 0;
pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_y;
pu4_buf = (UWORD32 *)pu1_buf;
*pu4_buf = 0;
pu1_buf = ps_cur_mb_info->ps_curmb->pu1_nnz_uv;
pu4_buf = (UWORD32 *)pu1_buf;
*pu4_buf = 0;
ps_cur_mb_info->ps_curmb->u2_luma_csbp = 0;
ps_cur_mb_info->u2_luma_csbp = 0;
ps_cur_mb_info->u2_chroma_csbp = 0;
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_parse_inter_slice_data_cabac */
/* */
/* Description : This function parses cabac syntax of a inter slice on */
/* N MB basis. */
/* */
/* Inputs : ps_dec */
/* sliceparams */
/* firstMbInSlice */
/* */
/* Processing : 1. After parsing syntax for N MBs those N MBs are */
/* decoded till the end of slice. */
/* 2. MV prediction and DMA happens on a N/2 MB basis. */
/* */
/* Returns : 0 */
/* */
/* Issues : <List any issues or problems with this function> */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 13 07 2002 Jay Draft */
/* */
/*****************************************************************************/
WORD32 ih264d_parse_inter_slice_data_cabac(dec_struct_t * ps_dec,
dec_slice_params_t * ps_slice,
UWORD16 u2_first_mb_in_slice)
{
UWORD32 uc_more_data_flag;
WORD32 i2_cur_mb_addr;
UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx;
UWORD32 u1_mbaff;
UWORD32 u1_num_mbs_next, u1_end_of_row;
const UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
UWORD32 u1_slice_end = 0;
UWORD32 u1_tfr_n_mb = 0;
UWORD32 u1_decode_nmb = 0;
deblk_mb_t *ps_cur_deblk_mb;
dec_mb_info_t *ps_cur_mb_info;
parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data;
UWORD32 u1_inter_mb_skip_type;
UWORD32 u1_inter_mb_type;
UWORD32 u1_deblk_mb_type;
UWORD32 u1_mb_threshold;
dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm;
WORD32 ret = OK;
/******************************************************/
/* Initialisations specific to B or P slice */
/******************************************************/
if(ps_slice->u1_slice_type == P_SLICE)
{
u1_inter_mb_skip_type = CAB_P_SKIP;
u1_inter_mb_type = P_MB;
u1_deblk_mb_type = D_INTER_MB;
u1_mb_threshold = 5;
}
else // B_SLICE
{
u1_inter_mb_skip_type = CAB_B_SKIP;
u1_inter_mb_type = B_MB;
u1_deblk_mb_type = D_B_SLICE;
u1_mb_threshold = 23;
}
/******************************************************/
/* Slice Level Initialisations */
/******************************************************/
i2_cur_mb_addr = u2_first_mb_in_slice;
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mb_idx = ps_dec->u1_mb_idx;
u1_num_mbs = u1_mb_idx;
u1_num_mbsNby2 = 0;
u1_mbaff = ps_slice->u1_mbaff_frame_flag;
i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
uc_more_data_flag = 1;
/* Initialisations specific to cabac */
if(ps_bitstrm->u4_ofst & 0x07)
{
ps_bitstrm->u4_ofst += 8;
ps_bitstrm->u4_ofst &= 0xFFFFFFF8;
}
ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm);
if(ret != OK)
return ret;
ps_dec->i1_prev_mb_qp_delta = 0;
while(!u1_slice_end)
{
UWORD8 u1_mb_type;
UWORD32 u4_mb_skip;
ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
{
ret = ERROR_MB_ADDRESS_T;
break;
}
ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
ps_cur_mb_info->u1_Mux = 0;
ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
ps_cur_mb_info->u1_end_of_slice = 0;
/* Storing Default partition info */
ps_parse_mb_data->u1_num_part = 1;
ps_parse_mb_data->u1_isI_mb = 0;
/***************************************************************/
/* Get the required information for decoding of MB */
/* mb_x, mb_y , neighbour availablity, */
/***************************************************************/
u4_mb_skip = ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 1);
/*********************************************************************/
/* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */
/*********************************************************************/
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
/***************************************************************/
/* Set the deblocking parameters for this MB */
/***************************************************************/
if(ps_dec->u4_app_disable_deblk_frm == 0)
ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
ps_dec->u1_mb_ngbr_availablity,
ps_dec->u1_cur_mb_fld_dec_flag);
if(u4_mb_skip)
{
/* Set appropriate flags in ps_cur_mb_info and ps_dec */
memset(ps_dec->ps_curr_ctxt_mb_info, 0, sizeof(ctxt_inc_mb_info_t));
ps_dec->ps_curr_ctxt_mb_info->u1_mb_type = u1_inter_mb_skip_type;
MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);
*((UWORD32 *)ps_dec->pi1_left_ref_idx_ctxt_inc) = 0;
*(ps_dec->pu1_left_yuv_dc_csbp) = 0;
ps_dec->i1_prev_mb_qp_delta = 0;
ps_cur_mb_info->u1_mb_type = MB_SKIP;
ps_cur_mb_info->u1_cbp = 0;
{
/* Storing Skip partition info */
parse_part_params_t *ps_part_info = ps_dec->ps_part;
ps_part_info->u1_is_direct = PART_DIRECT_16x16;
ps_part_info->u1_sub_mb_num = 0;
ps_dec->ps_part++;
}
/* Update Nnzs */
ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CABAC);
ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
}
else
{
/* Macroblock Layer Begins */
/* Decode the u1_mb_type */
u1_mb_type = ih264d_parse_mb_type_cabac(ps_dec);
ps_cur_mb_info->u1_mb_type = u1_mb_type;
if(u1_mb_type > (25 + u1_mb_threshold))
return ERROR_MB_TYPE;
/* Parse Macroblock Data */
if(u1_mb_type < u1_mb_threshold)
{
ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
*(ps_dec->pu1_left_yuv_dc_csbp) &= 0x6;
ret = ps_dec->pf_parse_inter_mb(ps_dec, ps_cur_mb_info, u1_num_mbs,
u1_num_mbsNby2);
if(ret != OK)
return ret;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
}
else
{
/* Storing Intra partition info */
ps_parse_mb_data->u1_num_part = 0;
ps_parse_mb_data->u1_isI_mb = 1;
if((25 + u1_mb_threshold) == u1_mb_type)
{
/* I_PCM_MB */
ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
if(ret != OK)
return ret;
ps_cur_deblk_mb->u1_mb_qp = 0;
}
else
{
if(u1_mb_type == u1_mb_threshold)
ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
else
ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;
ret = ih264d_parse_imb_cabac(
ps_dec, ps_cur_mb_info,
(UWORD8)(u1_mb_type - u1_mb_threshold));
if(ret != OK)
return ret;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
}
ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
}
}
if(u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
}
/* Next macroblock information */
i2_cur_mb_addr++;
if(ps_cur_mb_info->u1_topmb && u1_mbaff)
uc_more_data_flag = 1;
else
{
uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env,
ps_bitstrm);
uc_more_data_flag = !uc_more_data_flag;
COPYTHECONTEXT("Decode Sliceterm",!uc_more_data_flag);
}
u1_num_mbs++;
u1_num_mbsNby2++;
ps_parse_mb_data++;
/****************************************************************/
/* Check for End Of Row and other flags that determine when to */
/* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for */
/* N-Mb */
/****************************************************************/
u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
u1_slice_end = !uc_more_data_flag;
u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row
|| u1_slice_end;
u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
ps_cur_mb_info->u1_end_of_slice = u1_slice_end;
/*u1_dma_nby2mb = u1_decode_nmb ||
(u1_num_mbsNby2 == ps_dec->u1_recon_mb_grp_pair);*/
//if(u1_dma_nby2mb)
if(u1_decode_nmb)
{
ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
u1_num_mbsNby2 = 0;
{
ps_parse_mb_data = ps_dec->ps_parse_mb_data;
ps_dec->ps_part = ps_dec->ps_parse_part_params;
}
}
/*H264_DEC_DEBUG_PRINT("Pic: %d Mb_X=%d Mb_Y=%d",
ps_slice->i4_poc >> ps_slice->u1_field_pic_flag,
ps_dec->u2_mbx,ps_dec->u2_mby + (1 - ps_cur_mb_info->u1_topmb));
H264_DEC_DEBUG_PRINT("u1_decode_nmb: %d, u1_num_mbs: %d", u1_decode_nmb, u1_num_mbs);*/
if(u1_decode_nmb)
{
if(ps_dec->u1_separate_parse)
{
ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row);
ps_dec->ps_nmb_info += u1_num_mbs;
}
else
{
ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb,
u1_end_of_row);
}
ps_dec->u2_total_mbs_coded += u1_num_mbs;
if(u1_tfr_n_mb)
u1_num_mbs = 0;
u1_mb_idx = u1_num_mbs;
ps_dec->u1_mb_idx = u1_num_mbs;
}
}
ps_dec->u4_num_mbs_cur_nmb = 0;
ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr
- (u2_first_mb_in_slice << u1_mbaff);
return ret;
}
/*****************************************************************************/
/* */
/* Function Name : ih264d_parse_inter_slice_data_cavlc */
/* */
/* Description : This function parses cavlc syntax of a inter slice on */
/* N MB basis. */
/* */
/* Inputs : ps_dec */
/* sliceparams */
/* firstMbInSlice */
/* */
/* Processing : 1. After parsing syntax for N MBs those N MBs are */
/* decoded till the end of slice. */
/* 2. MV prediction and DMA happens on a N/2 MB basis. */
/* */
/* Returns : 0 */
/* */
/* Issues : <List any issues or problems with this function> */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 13 07 2002 Jay Draft */
/* */
/*****************************************************************************/
WORD32 ih264d_parse_inter_slice_data_cavlc(dec_struct_t * ps_dec,
dec_slice_params_t * ps_slice,
UWORD16 u2_first_mb_in_slice)
{
UWORD32 uc_more_data_flag;
WORD32 i2_cur_mb_addr;
UWORD32 u1_num_mbs, u1_num_mbsNby2, u1_mb_idx;
UWORD32 i2_mb_skip_run;
UWORD32 u1_read_mb_type;
UWORD32 u1_mbaff;
UWORD32 u1_num_mbs_next, u1_end_of_row;
const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
UWORD32 u1_slice_end = 0;
UWORD32 u1_tfr_n_mb = 0;
UWORD32 u1_decode_nmb = 0;
dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
deblk_mb_t *ps_cur_deblk_mb;
dec_mb_info_t *ps_cur_mb_info;
parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data;
UWORD32 u1_inter_mb_type;
UWORD32 u1_deblk_mb_type;
UWORD32 u1_mb_threshold;
WORD32 ret = OK;
/******************************************************/
/* Initialisations specific to B or P slice */
/******************************************************/
if(ps_slice->u1_slice_type == P_SLICE)
{
u1_inter_mb_type = P_MB;
u1_deblk_mb_type = D_INTER_MB;
u1_mb_threshold = 5;
}
else // B_SLICE
{
u1_inter_mb_type = B_MB;
u1_deblk_mb_type = D_B_SLICE;
u1_mb_threshold = 23;
}
/******************************************************/
/* Slice Level Initialisations */
/******************************************************/
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mb_idx = ps_dec->u1_mb_idx;
u1_num_mbs = u1_mb_idx;
u1_num_mbsNby2 = 0;
u1_mbaff = ps_slice->u1_mbaff_frame_flag;
i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
i2_mb_skip_run = 0;
uc_more_data_flag = 1;
u1_read_mb_type = 0;
while(!u1_slice_end)
{
UWORD8 u1_mb_type;
ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
{
ret = ERROR_MB_ADDRESS_T;
break;
}
ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
ps_cur_mb_info->u1_Mux = 0;
ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
ps_cur_mb_info->u1_end_of_slice = 0;
/* Storing Default partition info */
ps_parse_mb_data->u1_num_part = 1;
ps_parse_mb_data->u1_isI_mb = 0;
if((!i2_mb_skip_run) && (!u1_read_mb_type))
{
//Inlined ih264d_uev
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz;
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
{
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf,
u4_ldz);
}
*pu4_bitstrm_ofst = u4_bitstream_offset;
i2_mb_skip_run = ((1 << u4_ldz) + u4_word - 1);
//Inlined ih264d_uev
COPYTHECONTEXT("mb_skip_run", i2_mb_skip_run);
uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
u1_read_mb_type = uc_more_data_flag;
}
/***************************************************************/
/* Get the required information for decoding of MB */
/* mb_x, mb_y , neighbour availablity, */
/***************************************************************/
ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run);
/***************************************************************/
/* Set the deblocking parameters for this MB */
/***************************************************************/
if(ps_dec->u4_app_disable_deblk_frm == 0)
ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
ps_dec->u1_mb_ngbr_availablity,
ps_dec->u1_cur_mb_fld_dec_flag);
if(i2_mb_skip_run)
{
/* Set appropriate flags in ps_cur_mb_info and ps_dec */
ps_dec->i1_prev_mb_qp_delta = 0;
ps_dec->u1_sub_mb_num = 0;
ps_cur_mb_info->u1_mb_type = MB_SKIP;
ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16;
ps_cur_mb_info->u1_cbp = 0;
{
/* Storing Skip partition info */
parse_part_params_t *ps_part_info = ps_dec->ps_part;
ps_part_info->u1_is_direct = PART_DIRECT_16x16;
ps_part_info->u1_sub_mb_num = 0;
ps_dec->ps_part++;
}
/* Update Nnzs */
ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
i2_mb_skip_run--;
}
else
{
u1_read_mb_type = 0;
/**************************************************************/
/* Macroblock Layer Begins, Decode the u1_mb_type */
/**************************************************************/
{
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_temp;
//Inlined ih264d_uev
/***************************************************************/
/* Find leading zeros in next 32 bits */
/***************************************************************/
NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
u4_ldz = CLZ(u4_word);
/* Flush the ps_bitstrm */
u4_bitstream_offset += (u4_ldz + 1);
/* Read the suffix from the ps_bitstrm */
u4_word = 0;
if(u4_ldz)
GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf,
u4_ldz);
*pu4_bitstrm_ofst = u4_bitstream_offset;
u4_temp = ((1 << u4_ldz) + u4_word - 1);
//Inlined ih264d_uev
if(u4_temp > (UWORD32)(25 + u1_mb_threshold))
return ERROR_MB_TYPE;
u1_mb_type = u4_temp;
COPYTHECONTEXT("u1_mb_type", u1_mb_type);
}
ps_cur_mb_info->u1_mb_type = u1_mb_type;
/**************************************************************/
/* Parse Macroblock data */
/**************************************************************/
if(u1_mb_type < u1_mb_threshold)
{
ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
ret = ps_dec->pf_parse_inter_mb(ps_dec, ps_cur_mb_info, u1_num_mbs,
u1_num_mbsNby2);
if(ret != OK)
return ret;
ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
}
else
{
/* Storing Intra partition info */
ps_parse_mb_data->u1_num_part = 0;
ps_parse_mb_data->u1_isI_mb = 1;
if((25 + u1_mb_threshold) == u1_mb_type)
{
/* I_PCM_MB */
ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
if(ret != OK)
return ret;
ps_dec->u1_qp = 0;
}
else
{
ret = ih264d_parse_imb_cavlc(
ps_dec, ps_cur_mb_info, u1_num_mbs,
(UWORD8)(u1_mb_type - u1_mb_threshold));
if(ret != OK)
return ret;
}
ps_cur_deblk_mb->u1_mb_type |= D_INTRA_MB;
}
uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
}
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
if(u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
if(!uc_more_data_flag && !i2_mb_skip_run && (0 == (i2_cur_mb_addr & 1)))
{
return ERROR_EOB_FLUSHBITS_T;
}
}
/**************************************************************/
/* Get next Macroblock address */
/**************************************************************/
i2_cur_mb_addr++;
u1_num_mbs++;
u1_num_mbsNby2++;
ps_parse_mb_data++;
/****************************************************************/
/* Check for End Of Row and other flags that determine when to */
/* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for */
/* N-Mb */
/****************************************************************/
u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
u1_slice_end = (!(uc_more_data_flag || i2_mb_skip_run));
u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row
|| u1_slice_end;
u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
ps_cur_mb_info->u1_end_of_slice = u1_slice_end;
/*u1_dma_nby2mb = u1_decode_nmb ||
(u1_num_mbsNby2 == ps_dec->u1_recon_mb_grp_pair);*/
//if(u1_dma_nby2mb)
if(u1_decode_nmb)
{
ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
u1_num_mbsNby2 = 0;
{
ps_parse_mb_data = ps_dec->ps_parse_mb_data;
ps_dec->ps_part = ps_dec->ps_parse_part_params;
}
}
/*H264_DEC_DEBUG_PRINT("Pic: %d Mb_X=%d Mb_Y=%d",
ps_slice->i4_poc >> ps_slice->u1_field_pic_flag,
ps_dec->u2_mbx,ps_dec->u2_mby + (1 - ps_cur_mb_info->u1_topmb));
H264_DEC_DEBUG_PRINT("u1_decode_nmb: %d", u1_decode_nmb);*/
if(u1_decode_nmb)
{
if(ps_dec->u1_separate_parse)
{
ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row);
ps_dec->ps_nmb_info += u1_num_mbs;
}
else
{
ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb,
u1_end_of_row);
}
ps_dec->u2_total_mbs_coded += u1_num_mbs;
if(u1_tfr_n_mb)
u1_num_mbs = 0;
u1_mb_idx = u1_num_mbs;
ps_dec->u1_mb_idx = u1_num_mbs;
}
//ps_dec->ps_pred++;
}
ps_dec->u4_num_mbs_cur_nmb = 0;
ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr
- (u2_first_mb_in_slice << u1_mbaff);
return ret;
}
WORD32 ih264d_mark_err_slice_skip(dec_struct_t * ps_dec,
WORD32 num_mb_skip,
UWORD8 u1_is_idr_slice,
UWORD16 u2_frame_num,
pocstruct_t *ps_cur_poc,
WORD32 prev_slice_err)
{
WORD32 i2_cur_mb_addr;
UWORD32 u1_num_mbs, u1_num_mbsNby2;
UWORD32 u1_mb_idx = ps_dec->u1_mb_idx;
UWORD32 i2_mb_skip_run;
UWORD32 u1_num_mbs_next, u1_end_of_row;
const UWORD32 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
UWORD32 u1_slice_end;
UWORD32 u1_tfr_n_mb;
UWORD32 u1_decode_nmb;
dec_bit_stream_t * const ps_bitstrm = ps_dec->ps_bitstrm;
dec_slice_params_t * ps_slice = ps_dec->ps_cur_slice;
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
deblk_mb_t *ps_cur_deblk_mb;
dec_mb_info_t *ps_cur_mb_info;
parse_pmbarams_t *ps_parse_mb_data;
UWORD32 u1_inter_mb_type;
UWORD32 u1_deblk_mb_type;
UWORD16 u2_total_mbs_coded;
UWORD32 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
parse_part_params_t *ps_part_info;
WORD32 ret;
UNUSED(u1_is_idr_slice);
if(ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC)
{
ih264d_err_pic_dispbuf_mgr(ps_dec);
return 0;
}
if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag && (num_mb_skip & 1))
{
num_mb_skip++;
}
ps_dec->ps_dpb_cmds->u1_long_term_reference_flag = 0;
if(prev_slice_err == 1)
{
/* first slice - missing/header corruption */
ps_dec->ps_cur_slice->u2_frame_num = u2_frame_num;
{
WORD32 i, j, poc = 0;
ps_dec->ps_cur_slice->u2_first_mb_in_slice = 0;
ps_dec->pf_mvpred = ih264d_mvpred_nonmbaff;
ps_dec->p_form_mb_part_info = ih264d_form_mb_part_info_bp;
ps_dec->p_motion_compensate = ih264d_motion_compensate_bp;
if(ps_dec->ps_cur_pic != NULL)
poc = ps_dec->ps_cur_pic->i4_poc + 2;
j = -1;
for(i = 0; i < MAX_NUM_PIC_PARAMS; i++)
{
if(ps_dec->ps_pps[i].u1_is_valid == TRUE)
{
if(ps_dec->ps_pps[i].ps_sps->u1_is_valid == TRUE)
{
j = i;
break;
}
}
}
//if valid SPS PPS is not found return error
if(j == -1)
{
return ERROR_INV_SLICE_HDR_T;
}
/* call ih264d_start_of_pic only if it was not called earlier*/
if(ps_dec->u4_pic_buf_got == 0)
{
//initialize slice params required by ih264d_start_of_pic to valid values
ps_dec->ps_cur_slice->u1_slice_type = P_SLICE;
ps_dec->ps_cur_slice->u1_nal_ref_idc = 1;
ps_dec->ps_cur_slice->u1_nal_unit_type = 1;
ret = ih264d_start_of_pic(ps_dec, poc, ps_cur_poc,
ps_dec->ps_cur_slice->u2_frame_num,
&ps_dec->ps_pps[j]);
if(ret != OK)
{
return ret;
}
}
ps_dec->ps_ref_pic_buf_lx[0][0]->u1_pic_buf_id = 0;
ps_dec->u4_output_present = 0;
{
ih264d_get_next_display_field(ps_dec,
ps_dec->ps_out_buffer,
&(ps_dec->s_disp_op));
/* If error code is non-zero then there is no buffer available for display,
hence avoid format conversion */
if(0 != ps_dec->s_disp_op.u4_error_code)
{
ps_dec->u4_fmt_conv_cur_row = ps_dec->s_disp_frame_info.u4_y_ht;
}
else
ps_dec->u4_output_present = 1;
}
if(ps_dec->u1_separate_parse == 1)
{
if(ps_dec->u4_dec_thread_created == 0)
{
ithread_create(ps_dec->pv_dec_thread_handle, NULL,
(void *)ih264d_decode_picture_thread,
(void *)ps_dec);
ps_dec->u4_dec_thread_created = 1;
}
if((ps_dec->u4_num_cores == 3) &&
((ps_dec->u4_app_disable_deblk_frm == 0) || ps_dec->i1_recon_in_thread3_flag)
&& (ps_dec->u4_bs_deblk_thread_created == 0))
{
ps_dec->u4_start_recon_deblk = 0;
ithread_create(ps_dec->pv_bs_deblk_thread_handle, NULL,
(void *)ih264d_recon_deblk_thread,
(void *)ps_dec);
ps_dec->u4_bs_deblk_thread_created = 1;
}
}
}
ps_dec->u4_first_slice_in_pic = 0;
}
else
{
// Middle / last slice
dec_slice_struct_t *ps_parse_cur_slice;
ps_parse_cur_slice = ps_dec->ps_dec_slice_buf + ps_dec->u2_cur_slice_num;
if(ps_dec->u1_slice_header_done
&& ps_parse_cur_slice == ps_dec->ps_parse_cur_slice)
{
// Slice data corrupted
// in the case of mbaff, conceal from the even mb.
if((u1_mbaff) && (ps_dec->u4_num_mbs_cur_nmb & 1))
{
ps_dec->u4_num_mbs_cur_nmb = ps_dec->u4_num_mbs_cur_nmb - 1;
ps_dec->u2_cur_mb_addr--;
}
u1_num_mbs = ps_dec->u4_num_mbs_cur_nmb;
if(u1_num_mbs)
{
ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs - 1;
}
else
{
if(ps_dec->u1_separate_parse)
{
ps_cur_mb_info = ps_dec->ps_nmb_info;
}
else
{
ps_cur_mb_info = ps_dec->ps_nmb_info
+ ps_dec->u4_num_mbs_prev_nmb - 1;
}
}
ps_dec->u2_mby = ps_cur_mb_info->u2_mby;
ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx;
ps_dec->u1_mb_ngbr_availablity =
ps_cur_mb_info->u1_mb_ngbr_availablity;
if(u1_num_mbs)
{
// Going back 1 mb
ps_dec->pv_parse_tu_coeff_data = ps_dec->pv_prev_mb_parse_tu_coeff_data;
ps_dec->u2_cur_mb_addr--;
ps_dec->i4_submb_ofst -= SUB_BLK_SIZE;
// Parse/decode N-MB left unparsed
if (ps_dec->u1_pr_sl_type == P_SLICE
|| ps_dec->u1_pr_sl_type == B_SLICE)
{
ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
ps_dec->ps_part = ps_dec->ps_parse_part_params;
}
u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
u1_end_of_row = (!u1_num_mbs_next)
&& (!(u1_mbaff && (u1_num_mbs & 0x01)));
u1_slice_end = 1;
u1_tfr_n_mb = 1;
ps_cur_mb_info->u1_end_of_slice = u1_slice_end;
if(ps_dec->u1_separate_parse)
{
ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row);
ps_dec->ps_nmb_info += u1_num_mbs;
}
else
{
ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row);
}
ps_dec->u2_total_mbs_coded += u1_num_mbs;
ps_dec->u1_mb_idx = 0;
ps_dec->u4_num_mbs_cur_nmb = 0;
}
if(ps_dec->u2_total_mbs_coded
>= ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs)
{
ps_dec->u1_pic_decode_done = 1;
return 0;
}
/* Inserting new slice only if the current slice has atleast 1 MB*/
if(ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice <
(UWORD32)(ps_dec->u2_total_mbs_coded >> ps_slice->u1_mbaff_frame_flag))
{
ps_dec->i2_prev_slice_mbx = ps_dec->u2_mbx;
ps_dec->i2_prev_slice_mby = ps_dec->u2_mby;
ps_dec->u2_cur_slice_num++;
ps_dec->ps_parse_cur_slice++;
}
}
else
{
// Slice missing / header corrupted
ps_dec->ps_parse_cur_slice = ps_dec->ps_dec_slice_buf
+ ps_dec->u2_cur_slice_num;
}
}
/******************************************************/
/* Initializations to new slice */
/******************************************************/
{
WORD32 num_entries;
WORD32 size;
UWORD8 *pu1_buf;
num_entries = 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 *);
pu1_buf = (UWORD8 *)ps_dec->pv_map_ref_idx_to_poc_buf;
pu1_buf += size * ps_dec->u2_cur_slice_num;
ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc = (volatile void **)pu1_buf;
}
ps_dec->ps_cur_slice->u2_first_mb_in_slice = ps_dec->u2_total_mbs_coded >> u1_mbaff;
ps_dec->ps_cur_slice->i1_slice_alpha_c0_offset = 0;
ps_dec->ps_cur_slice->i1_slice_beta_offset = 0;
if(ps_dec->ps_cur_slice->u1_field_pic_flag)
ps_dec->u2_prv_frame_num = ps_dec->ps_cur_slice->u2_frame_num;
ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice = ps_dec->u2_total_mbs_coded >> u1_mbaff;
ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd;
if(ps_dec->u1_separate_parse)
{
ps_dec->ps_parse_cur_slice->pv_tu_coeff_data_start = ps_dec->pv_parse_tu_coeff_data;
}
else
{
ps_dec->pv_proc_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
}
/******************************************************/
/* Initializations specific to P slice */
/******************************************************/
u1_inter_mb_type = P_MB;
u1_deblk_mb_type = D_INTER_MB;
ps_dec->ps_cur_slice->u1_slice_type = P_SLICE;
ps_dec->ps_parse_cur_slice->slice_type = P_SLICE;
ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb;
ps_dec->ps_part = ps_dec->ps_parse_part_params;
ps_dec->u2_mbx =
(MOD(ps_dec->ps_cur_slice->u2_first_mb_in_slice - 1, ps_dec->u2_frm_wd_in_mbs));
ps_dec->u2_mby =
(DIV(ps_dec->ps_cur_slice->u2_first_mb_in_slice - 1, ps_dec->u2_frm_wd_in_mbs));
ps_dec->u2_mby <<= u1_mbaff;
/******************************************************/
/* Parsing / decoding the slice */
/******************************************************/
ps_dec->u1_slice_header_done = 2;
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mb_idx = ps_dec->u1_mb_idx;
ps_parse_mb_data = ps_dec->ps_parse_mb_data;
u1_num_mbs = u1_mb_idx;
u1_slice_end = 0;
u1_tfr_n_mb = 0;
u1_decode_nmb = 0;
u1_num_mbsNby2 = 0;
i2_cur_mb_addr = ps_dec->u2_total_mbs_coded;
i2_mb_skip_run = num_mb_skip;
while(!u1_slice_end)
{
UWORD8 u1_mb_type;
if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
break;
ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
ps_cur_mb_info->u1_Mux = 0;
ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
ps_cur_mb_info->u1_end_of_slice = 0;
/* Storing Default partition info */
ps_parse_mb_data->u1_num_part = 1;
ps_parse_mb_data->u1_isI_mb = 0;
/**************************************************************/
/* Get the required information for decoding of MB */
/**************************************************************/
/* mb_x, mb_y, neighbor availablity, */
if (u1_mbaff)
ih264d_get_mb_info_cavlc_mbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run);
else
ih264d_get_mb_info_cavlc_nonmbaff(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, i2_mb_skip_run);
/* Set the deblocking parameters for this MB */
if(ps_dec->u4_app_disable_deblk_frm == 0)
{
ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
ps_dec->u1_mb_ngbr_availablity,
ps_dec->u1_cur_mb_fld_dec_flag);
}
/* Set appropriate flags in ps_cur_mb_info and ps_dec */
ps_dec->i1_prev_mb_qp_delta = 0;
ps_dec->u1_sub_mb_num = 0;
ps_cur_mb_info->u1_mb_type = MB_SKIP;
ps_cur_mb_info->u1_mb_mc_mode = PRED_16x16;
ps_cur_mb_info->u1_cbp = 0;
/* Storing Skip partition info */
ps_part_info = ps_dec->ps_part;
ps_part_info->u1_is_direct = PART_DIRECT_16x16;
ps_part_info->u1_sub_mb_num = 0;
ps_dec->ps_part++;
/* Update Nnzs */
ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
ps_cur_mb_info->ps_curmb->u1_mb_type = u1_inter_mb_type;
ps_cur_deblk_mb->u1_mb_type |= u1_deblk_mb_type;
i2_mb_skip_run--;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
if (u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
}
/**************************************************************/
/* Get next Macroblock address */
/**************************************************************/
i2_cur_mb_addr++;
u1_num_mbs++;
u1_num_mbsNby2++;
ps_parse_mb_data++;
/****************************************************************/
/* Check for End Of Row and other flags that determine when to */
/* do DMA setup for N/2-Mb, Decode for N-Mb, and Transfer for */
/* N-Mb */
/****************************************************************/
u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
u1_slice_end = !i2_mb_skip_run;
u1_tfr_n_mb = (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row
|| u1_slice_end;
u1_decode_nmb = u1_tfr_n_mb || u1_slice_end;
ps_cur_mb_info->u1_end_of_slice = u1_slice_end;
if(u1_decode_nmb)
{
ps_dec->pf_mvpred_ref_tfr_nby2mb(ps_dec, u1_mb_idx, u1_num_mbs);
u1_num_mbsNby2 = 0;
ps_parse_mb_data = ps_dec->ps_parse_mb_data;
ps_dec->ps_part = ps_dec->ps_parse_part_params;
if(ps_dec->u1_separate_parse)
{
ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb, u1_end_of_row);
ps_dec->ps_nmb_info += u1_num_mbs;
}
else
{
ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
u1_tfr_n_mb, u1_end_of_row);
}
ps_dec->u2_total_mbs_coded += u1_num_mbs;
if(u1_tfr_n_mb)
u1_num_mbs = 0;
u1_mb_idx = u1_num_mbs;
ps_dec->u1_mb_idx = u1_num_mbs;
}
}
ps_dec->u4_num_mbs_cur_nmb = 0;
ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr
- ps_dec->ps_parse_cur_slice->u4_first_mb_in_slice;
H264_DEC_DEBUG_PRINT("Mbs in slice: %d\n", ps_dec->ps_cur_slice->u4_mbs_in_slice);
/* incremented here only if first slice is inserted */
if(ps_dec->u4_first_slice_in_pic != 0)
{
ps_dec->ps_parse_cur_slice++;
ps_dec->u2_cur_slice_num++;
}
ps_dec->i2_prev_slice_mbx = ps_dec->u2_mbx;
ps_dec->i2_prev_slice_mby = ps_dec->u2_mby;
if(ps_dec->u2_total_mbs_coded
>= ps_dec->u2_frm_ht_in_mbs * ps_dec->u2_frm_wd_in_mbs)
{
ps_dec->u1_pic_decode_done = 1;
}
return 0;
}
/*!
**************************************************************************
* \if Function name : ih264d_decode_pslice \endif
*
* \brief
* Decodes a P Slice
*
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 ih264d_parse_pslice(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_cur_slice = ps_dec->ps_cur_slice;
dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag; //ps_dec->ps_cur_sps->u1_mb_aff_flag;
UWORD8 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;
UWORD32 u4_temp;
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_cur_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(
ps_bitstrm);
COPYTHECONTEXT("SH: num_ref_idx_override_flag",
ps_cur_slice->u1_num_ref_idx_active_override_flag);
u4_temp = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0];
if(ps_cur_slice->u1_num_ref_idx_active_override_flag)
{
u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + 1;
}
{
UWORD8 u1_max_ref_idx = MAX_FRAMES << u1_field_pic_flag;
if(u4_temp > u1_max_ref_idx)
{
return ERROR_NUM_REF;
}
ps_cur_slice->u1_num_ref_idx_lx_active[0] = u4_temp;
COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1",
ps_cur_slice->u1_num_ref_idx_lx_active[0] - 1);
}
{
UWORD8 uc_refIdxReFlagL0 = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0",uc_refIdxReFlagL0);
/* 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_cur_slice->u1_num_ref_idx_lx_active[0])
{
ih264d_init_ref_idx_lx_p(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_cur_slice->u1_num_ref_idx_lx_active[0];
/* Modified temporarily */
if(uc_refIdxReFlagL0)
{
WORD8 ret;
ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
ret = ih264d_ref_idx_reordering(ps_dec, 0);
if(ret == -1)
return ERROR_REFIDX_ORDER_T;
ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
}
else
ps_dec->ps_ref_pic_buf_lx[0] =
ps_dec->ps_dpb_mgr->ps_init_dpb[0];
}
/* Create refIdx to POC mapping */
{
void **pui_map_ref_idx_to_poc_lx0, **pui_map_ref_idx_to_poc_lx1;
WORD8 idx;
struct pic_buffer_t *ps_pic;
pui_map_ref_idx_to_poc_lx0 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0;
pui_map_ref_idx_to_poc_lx0[0] = 0; //For ref_idx = -1
pui_map_ref_idx_to_poc_lx0++;
for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
{
ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
pui_map_ref_idx_to_poc_lx0[idx] = (ps_pic->pu1_buf1);
}
/* Bug Fix Deblocking */
pui_map_ref_idx_to_poc_lx1 = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1;
pui_map_ref_idx_to_poc_lx1[0] = 0;
if(u1_mbaff)
{
void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b;
void **ppv_map_ref_idx_to_poc_lx_t1, **ppv_map_ref_idx_to_poc_lx_b1;
ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc
+ TOP_LIST_FLD_L0;
ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc
+ BOT_LIST_FLD_L0;
ppv_map_ref_idx_to_poc_lx_t[0] = 0; // For ref_idx = -1
ppv_map_ref_idx_to_poc_lx_t++;
ppv_map_ref_idx_to_poc_lx_b[0] = 0; // For ref_idx = -1
ppv_map_ref_idx_to_poc_lx_b++;
idx = 0;
for(idx = 0; idx < ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
{
ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1);
ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1);
ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1;
ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1;
ppv_map_ref_idx_to_poc_lx_t += 2;
ppv_map_ref_idx_to_poc_lx_b += 2;
}
ppv_map_ref_idx_to_poc_lx_t1 = ps_dec->ppv_map_ref_idx_to_poc
+ TOP_LIST_FLD_L1;
ppv_map_ref_idx_to_poc_lx_t1[0] = 0;
ppv_map_ref_idx_to_poc_lx_b1 = ps_dec->ppv_map_ref_idx_to_poc
+ BOT_LIST_FLD_L1;
ppv_map_ref_idx_to_poc_lx_b1[0] = 0;
}
if(ps_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_pps->u1_wted_pred_flag)
{
ret = ih264d_parse_pred_weight_table(ps_cur_slice, ps_bitstrm);
if(ret != OK)
return ret;
ih264d_form_pred_weight_matrix(ps_dec);
ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
}
else
{
ps_dec->ps_cur_slice->u2_log2Y_crwd = 0;
ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
}
ps_dec->ps_parse_cur_slice->u2_log2Y_crwd =
ps_dec->ps_cur_slice->u2_log2Y_crwd;
if(u1_mbaff && (u1_field_pic_flag == 0))
{
ih264d_convert_frm_mbaff_list(ps_dec);
}
/* G050 */
if(ps_cur_slice->u1_nal_ref_idc != 0)
{
if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
{
i_temp = ih264d_read_mmco_commands(ps_dec);
if (i_temp < 0)
{
return ERROR_DBP_MANAGER_T;
}
ps_dec->u4_bitoffset = i_temp;
}
else
ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
}
/* G050 */
if(ps_pps->u1_entropy_coding_mode == CABAC)
{
u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
if(u4_temp > MAX_CABAC_INIT_IDC)
{
return ERROR_INV_SLICE_HDR_T;
}
ps_cur_slice->u1_cabac_init_idc = u4_temp;
COPYTHECONTEXT("SH: cabac_init_idc",ps_cur_slice->u1_cabac_init_idc);
}
/* Read slice_qp_delta */
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_cur_slice->u1_slice_qp = i_temp;
COPYTHECONTEXT("SH: slice_qp_delta",
(WORD8)(ps_cur_slice->u1_slice_qp - ps_pps->u1_pic_init_qp));
if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
{
u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
{
return ERROR_INV_SLICE_HDR_T;
}
COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp);
ps_cur_slice->u1_disable_dblk_filter_idc = u4_temp;
if(u4_temp != 1)
{
i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf)
<< 1;
if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
{
return ERROR_INV_SLICE_HDR_T;
}
ps_cur_slice->i1_slice_alpha_c0_offset = i_temp;
COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
ps_cur_slice->i1_slice_alpha_c0_offset >> 1);
i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf)
<< 1;
if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
{
return ERROR_INV_SLICE_HDR_T;
}
ps_cur_slice->i1_slice_beta_offset = i_temp;
COPYTHECONTEXT("SH: slice_beta_offset_div2",
ps_cur_slice->i1_slice_beta_offset >> 1);
}
else
{
ps_cur_slice->i1_slice_alpha_c0_offset = 0;
ps_cur_slice->i1_slice_beta_offset = 0;
}
}
else
{
ps_cur_slice->u1_disable_dblk_filter_idc = 0;
ps_cur_slice->i1_slice_alpha_c0_offset = 0;
ps_cur_slice->i1_slice_beta_offset = 0;
}
ps_dec->u1_slice_header_done = 2;
if(ps_pps->u1_entropy_coding_mode)
{
SWITCHOFFTRACE; SWITCHONTRACECABAC;
ps_dec->pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac;
ps_dec->pf_parse_inter_mb = ih264d_parse_pmb_cabac;
ih264d_init_cabac_contexts(P_SLICE, ps_dec);
if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
else
ps_dec->pf_get_mb_info = 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_pmb_cavlc;
if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
{
ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
}
else
ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff;
}
ps_dec->u1_B = 0;
ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb;
ret = ps_dec->pf_parse_inter_slice(ps_dec, ps_cur_slice, u2_first_mb_in_slice);
if(ret != OK)
return ret;
// ps_dec->curr_slice_in_error = 0 ;
return OK;
}