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libavc/decoder/ih264d_parse_pslice.c
Harish Mahendrakar a2b785c1ee Decoder: Once all the MBs in a picture are decoded ignore remaining bytes 
Once all the MBs are decoded, simply break from decode loops and do not signal an error
This will handle cases where there may be extra bytes at the end of picture data

Change-Id: I6d8ec918df5375f135e60f85b9a56ab2a5313a64
2015-10-09 01:03:59 +00:00

2187 lines
81 KiB
C
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/******************************************************************************
*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
/*!
**************************************************************************
* \file ih264d_parse_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)
{
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++;
ps_dec->u2_total_mbs_coded++;
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);
}
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)
{
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);
}
/**************************************************************/
/* Get next Macroblock address */
/**************************************************************/
i2_cur_mb_addr++;
u1_num_mbs++;
ps_dec->u2_total_mbs_coded++;
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);
}
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;
if(ps_dec->ps_dec_err_status->u1_err_flag & REJECT_CUR_PIC)
{
ih264d_err_pic_dispbuf_mgr(ps_dec);
return 0;
}
if(prev_slice_err == 1)
{
/* first slice - missing/header corruption */
ps_dec->ps_cur_slice->u2_frame_num = u2_frame_num;
if(!ps_dec->u1_first_slice_in_stream)
{
ih264d_end_of_pic(ps_dec, u1_is_idr_slice,
ps_dec->ps_cur_slice->u2_frame_num);
ps_dec->s_cur_pic_poc.u2_frame_num =
ps_dec->ps_cur_slice->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 = 0;
for(i = 0; i < MAX_NUM_PIC_PARAMS; i++)
if(ps_dec->ps_pps[i].u1_is_valid == TRUE)
j = i;
{
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;
}
}
}
}
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
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 - 1;
}
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;
// 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;
if(u1_num_mbs)
{
// 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->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
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;
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 = 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 *);
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;
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;
/******************************************************/
/* 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++;
ps_dec->u2_total_mbs_coded++;
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);
}
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);
ps_dec->u2_cur_slice_num++;
/* 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->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 = 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_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)
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_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;
}
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