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unplugged-system/external/libavc/decoder/svc/isvcd_parse_eislice.c

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/******************************************************************************
*
* Copyright (C) 2022 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
* isvcd_parse_eislice.c
*
* @brief
* Contains routines that decode a EI slice type
*
* @author
* Kishore
*
* @par List of Functions:
* - isvcd_parse_islice_data_cabac()
* - isvcd_parse_islice_data_cavlc()
* - isvcd_parse_imb_cavlc()
* - isvcd_parse_eislice()
* - isvcd_parse_eislice_data_cabac()
* - isvcd_parse_eislice_data_cavlc()
* - isvcd_parse_imb_cabac()
* - isvcd_parse_islice()
*
* @remarks
* None
*
*******************************************************************************
*/
#include <string.h>
#include "ih264_defs.h"
#include "ih264d_error_handler.h"
#include "ih264d_debug.h"
#include "ih264d_bitstrm.h"
#include "ih264d_defs.h"
#include "ih264d_tables.h"
#include "isvcd_structs.h"
#include "ih264d_parse_cavlc.h"
#include "ih264d_mb_utils.h"
#include "ih264d_deblocking.h"
#include "ih264d_cabac.h"
#include "ih264d_parse_cabac.h"
#include "ih264d_parse_mb_header.h"
#include "ih264d_parse_slice.h"
#include "ih264d_process_pslice.h"
#include "isvcd_process_epslice.h"
#include "ih264d_process_intra_mb.h"
#include "ih264d_parse_islice.h"
#include "ih264d_error_handler.h"
#include "ih264d_mvpred.h"
#include "ih264d_thread_parse_decode.h"
#include "ithread.h"
#include "ih264d_parse_mb_header.h"
#include "assert.h"
#include "ih264d_utils.h"
#include "ih264d_format_conv.h"
#include "ih264d_parse_headers.h"
#include "isvcd_parse_headers.h"
#include "isvcd_parse_slice.h"
#include "isvcd_mb_utils.h"
void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);
void isvcd_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);
/*****************************************************************************/
/* */
/* Function Name : isvcd_parse_islice_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. */
/* */
/* Returns : 0 */
/* */
/* Issues : <List any issues or problems with this function> */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 24 06 2005 Kishore Draft */
/* */
/*****************************************************************************/
WORD32 isvcd_parse_islice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
{
UWORD8 uc_more_data_flag;
UWORD8 u1_num_mbs, u1_mb_idx;
dec_mb_info_t *ps_cur_mb_info;
deblk_mb_t *ps_cur_deblk_mb;
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
WORD16 i2_cur_mb_addr;
UWORD8 u1_mbaff;
UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
WORD32 ret = OK;
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mbaff = ps_slice->u1_mbaff_frame_flag;
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;
ih264d_init_cabac_contexts(I_SLICE, ps_dec);
ps_dec->i1_prev_mb_qp_delta = 0;
/* initializations */
u1_mb_idx = ps_dec->u1_mb_idx;
u1_num_mbs = u1_mb_idx;
uc_more_data_flag = 1;
i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
do
{
UWORD16 u2_mbx;
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;
}
{
UWORD8 u1_mb_type;
ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_mb_info->u1_end_of_slice = 0;
/***************************************************************/
/* 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, 0);
u2_mbx = ps_dec->u2_mbx;
/*********************************************************************/
/* 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 */
/***************************************************************/
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
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);
ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
/* Macroblock Layer Begins */
/* Decode the u1_mb_type */
u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec);
if(u1_mb_type > 25) return ERROR_MB_TYPE;
ps_cur_mb_info->u1_mb_type = u1_mb_type;
COPYTHECONTEXT("u1_mb_type", u1_mb_type);
/* Parse Macroblock Data */
if(25 == 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
{
ret = ih264d_parse_imb_cabac(ps_dec, ps_cur_mb_info, u1_mb_type);
if(ret != OK) return ret;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
}
if(ps_dec->u1_enable_mb_info)
{
ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
}
if(u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
}
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);
}
if(u1_mbaff)
{
if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
{
return ERROR_EOB_FLUSHBITS_T;
}
}
/* Next macroblock information */
i2_cur_mb_addr++;
/* Store the colocated information */
{
mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
(UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
}
/*if num _cores is set to 3,compute bs will be done in another thread*/
if(ps_dec->u4_num_cores < 3)
{
if(ps_dec->u4_app_disable_deblk_frm == 0)
ps_svc_lyr_dec->pf_svc_compute_bs(ps_svc_lyr_dec, ps_cur_mb_info,
(UWORD16) (u1_num_mbs >> u1_mbaff));
}
u1_num_mbs++;
}
/****************************************************************/
/* Check for End Of Row */
/****************************************************************/
u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1;
u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
u1_tfr_n_mb =
(u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
if(u1_tfr_n_mb || (!uc_more_data_flag))
{
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;
ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
}
else
{
if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
{
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);
}
else
{
isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_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;
}
} while(uc_more_data_flag);
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 : isvcd_parse_islice_data_cavlc */
/* */
/* 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. */
/* */
/* Returns : 0 */
/* */
/* Issues : <List any issues or problems with this function> */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 24 06 2005 Kishore Draft */
/* */
/*****************************************************************************/
WORD32 isvcd_parse_islice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
{
UWORD8 uc_more_data_flag;
UWORD8 u1_num_mbs, u1_mb_idx;
dec_mb_info_t *ps_cur_mb_info;
deblk_mb_t *ps_cur_deblk_mb;
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
WORD16 i2_cur_mb_addr;
UWORD8 u1_mbaff;
UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
WORD32 ret = OK;
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mbaff = ps_slice->u1_mbaff_frame_flag;
/* initializations */
u1_mb_idx = ps_dec->u1_mb_idx;
u1_num_mbs = u1_mb_idx;
uc_more_data_flag = 1;
i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
do
{
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_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_mb_info->u1_end_of_slice = 0;
/***************************************************************/
/* 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, 0);
/***************************************************************/
/* Set the deblocking parameters for this MB */
/***************************************************************/
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
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);
ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
/**************************************************************/
/* Macroblock Layer Begins, Decode the u1_mb_type */
/**************************************************************/
/* Inlined ih264d_uev */
{
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_temp;
/***************************************************************/
/* 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);
if(u4_temp > 25) return ERROR_MB_TYPE;
u1_mb_type = u4_temp;
}
/* Inlined ih264d_uev */
ps_cur_mb_info->u1_mb_type = u1_mb_type;
COPYTHECONTEXT("u1_mb_type", u1_mb_type);
/**************************************************************/
/* Parse Macroblock data */
/**************************************************************/
if(25 == 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
{
ret = ih264d_parse_imb_cavlc(ps_dec, ps_cur_mb_info, u1_num_mbs, u1_mb_type);
if(ret != OK) return ret;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
}
if(ps_dec->u1_enable_mb_info)
{
ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
}
uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
if(u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
{
return ERROR_EOB_FLUSHBITS_T;
}
}
/**************************************************************/
/* Get next Macroblock address */
/**************************************************************/
i2_cur_mb_addr++;
/* Store the colocated information */
{
mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
(UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
}
/*if num _cores is set to 3,compute bs will be done in another thread*/
if(ps_dec->u4_num_cores < 3)
{
if(ps_dec->u4_app_disable_deblk_frm == 0)
ps_svc_lyr_dec->pf_svc_compute_bs(ps_svc_lyr_dec, ps_cur_mb_info,
(UWORD16) (u1_num_mbs >> u1_mbaff));
}
u1_num_mbs++;
/****************************************************************/
/* Check for End Of Row */
/****************************************************************/
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_tfr_n_mb =
(u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
if(u1_tfr_n_mb || (!uc_more_data_flag))
{
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;
ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
}
else
{
if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
{
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);
}
else
{
isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_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;
}
} while(uc_more_data_flag);
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;
}
/*!
**************************************************************************
* \if Function name : ParseIMb \endif
*
* \brief
* This function parses CAVLC syntax of a I MB. If 16x16 Luma DC transform
* is also done here. Transformed Luma DC values are copied in their
* 0th pixel location of corrosponding CoeffBlock.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_imb_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num,
UWORD8 u1_mb_type)
{
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
WORD32 i4_delta_qp;
UWORD32 u4_temp;
UWORD32 ui_is_top_mb_available;
UWORD32 ui_is_left_mb_available;
UWORD32 u4_cbp;
UWORD32 u4_offset;
UWORD32 *pu4_bitstrm_buf;
WORD32 ret;
dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
UNUSED(u1_mb_num);
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;
u4_temp = ps_dec->u1_mb_ngbr_availablity;
ui_is_top_mb_available = BOOLEAN(u4_temp & TOP_MB_AVAILABLE_MASK);
ui_is_left_mb_available = BOOLEAN(u4_temp & LEFT_MB_AVAILABLE_MASK);
pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB;
if(!ps_svc_cur_mb_info->u1_base_mode_flag)
{
if(u1_mb_type == I_4x4_MB)
{
ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
u4_offset = 0;
/*--------------------------------------------------------------------*/
/* Read transform_size_8x8_flag if present */
/*--------------------------------------------------------------------*/
if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_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 the IntraPrediction modes for LUMA */
/*--------------------------------------------------------------------*/
if(!ps_cur_mb_info->u1_tran_form8x8)
{
UWORD8 *pu1_temp;
ih264d_read_intra_pred_modes(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16),
ps_cur_mb_info->u1_tran_form8x8);
pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
pu1_temp += 32;
ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
}
else
{
UWORD8 *pu1_temp;
ih264d_read_intra_pred_modes(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4),
ps_cur_mb_info->u1_tran_form8x8);
pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
pu1_temp += 8;
ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
}
/*--------------------------------------------------------------------*/
/* Read the IntraPrediction mode for CHROMA */
/*--------------------------------------------------------------------*/
/* Inlined ih264d_uev */
{
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_temp;
/***************************************************************/
/* 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);
if(u4_temp > 3)
{
return ERROR_CHROMA_PRED_MODE;
}
ps_cur_mb_info->u1_chroma_pred_mode = u4_temp;
COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode);
}
/*--------------------------------------------------------------------*/
/* 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 = gau1_ih264d_cbp_table[u4_cbp][0];
COPYTHECONTEXT("coded_block_pattern", u4_cbp);
ps_cur_mb_info->u1_cbp = u4_cbp;
/*--------------------------------------------------------------------*/
/* Read mb_qp_delta */
/*--------------------------------------------------------------------*/
if(ps_cur_mb_info->u1_cbp)
{
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)
{
i4_delta_qp = (-(WORD32) u4_abs_val);
}
else
{
i4_delta_qp = (u4_abs_val);
}
if((i4_delta_qp < -26) || (i4_delta_qp > 25))
{
return ERROR_INV_RANGE_QP_T;
}
COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
if(i4_delta_qp != 0)
{
ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp);
if(ret != OK) return ret;
}
}
}
else
{
u4_offset = 1;
ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;
/*-------------------------------------------------------------------*/
/* Read the IntraPrediction mode for CHROMA */
/*-------------------------------------------------------------------*/
{
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_temp = ((1 << u4_ldz) + u4_word - 1);
/* Inlined ih264d_uev */
if(u4_temp > 3)
{
return ERROR_CHROMA_PRED_MODE;
}
ps_cur_mb_info->u1_chroma_pred_mode = u4_temp;
COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode);
}
/*-------------------------------------------------------------------*/
/* Read the Coded block pattern */
/*-------------------------------------------------------------------*/
u4_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2];
ps_cur_mb_info->u1_cbp = u4_cbp;
/*-------------------------------------------------------------------*/
/* Read mb_qp_delta */
/*-------------------------------------------------------------------*/
{
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)
i4_delta_qp = (-(WORD32) u4_abs_val);
else
i4_delta_qp = (u4_abs_val);
if((i4_delta_qp < -26) || (i4_delta_qp > 25)) return ERROR_INV_RANGE_QP_T;
}
/* inlinined ih264d_sev */
COPYTHECONTEXT("Delta quant", i1_delta_qp);
if(i4_delta_qp != 0)
{
ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp);
if(ret != OK) return ret;
}
{
WORD16 i_scaleFactor;
UWORD32 ui_N = 0;
WORD16 *pi2_scale_matrix_ptr;
/*******************************************************************/
/* for luma DC coefficients the scaling is done during the parsing */
/* to preserve the precision */
/*******************************************************************/
if(ps_dec->s_high_profile.u1_scaling_present)
{
pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0];
}
else
{
i_scaleFactor = 16;
pi2_scale_matrix_ptr = &i_scaleFactor;
}
/*---------------------------------------------------------------*/
/* Decode DC coefficients */
/*---------------------------------------------------------------*/
/*---------------------------------------------------------------*/
/* Calculation of N */
/*---------------------------------------------------------------*/
if(ui_is_left_mb_available)
{
if(ui_is_top_mb_available)
{
ui_N = ((ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0] +
ps_dec->pu1_left_nnz_y[0] + 1) >>
1);
}
else
{
ui_N = ps_dec->pu1_left_nnz_y[0];
}
}
else if(ui_is_top_mb_available)
{
ui_N = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0];
}
{
WORD16 pi2_dc_coef[16] = {0};
WORD32 pi4_tmp[16] = {0};
tu_sblk4x4_coeff_data_t *ps_tu_4x4 =
(tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data;
WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data;
UWORD32 u4_num_coeff;
ps_tu_4x4->u2_sig_coeff_map = 0;
ret = ps_dec->pf_cavlc_parse4x4coeff[(ui_N > 7)](pi2_dc_coef, 0, ui_N, ps_dec,
&u4_num_coeff);
if(ret != OK) return ret;
if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
if(ps_tu_4x4->u2_sig_coeff_map)
{
memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef));
ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef,
ps_dec->pu1_inv_scan);
PROFILE_DISABLE_IQ_IT_RECON()
ps_dec->pf_ihadamard_scaling_4x4(
pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y,
(UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp);
pi2_coeff_block += 16;
ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block;
SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0);
}
}
}
}
}
else
{
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
u4_offset = 0;
/*--------------------------------------------------------------------*/
/* 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;
}
/* inter cbp table to be used for base mode flag*/
u4_cbp = gau1_ih264d_cbp_table[u4_cbp][1];
COPYTHECONTEXT("coded_block_pattern", u4_cbp);
ps_cur_mb_info->u1_cbp = u4_cbp;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
/*--------------------------------------------------------------------*/
/* Read transform_size_8x8_flag if present */
/*--------------------------------------------------------------------*/
if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (ps_cur_mb_info->u1_cbp & 0xf))
{
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(ps_cur_mb_info->u1_cbp)
{
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)
{
i4_delta_qp = (-(WORD32) u4_abs_val);
}
else
{
i4_delta_qp = (u4_abs_val);
}
if((i4_delta_qp < -26) || (i4_delta_qp > 25))
{
return ERROR_INV_RANGE_QP_T;
}
COPYTHECONTEXT("mb_qp_delta", i4_delta_qp);
if(i4_delta_qp != 0)
{
ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp);
if(ret != OK) return ret;
}
}
}
if(u4_cbp)
{
ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, (UWORD8) u4_offset);
if(ret != OK) return ret;
if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
/* Store Left Mb NNZ and TOP chroma NNZ */
}
else
{
ps_cur_mb_info->u1_qp_div6 = ps_dec->u1_qp_y_div6;
ps_cur_mb_info->u1_qpc_div6 = ps_dec->u1_qp_u_div6;
ps_cur_mb_info->u1_qpcr_div6 = ps_dec->u1_qp_v_div6;
ps_cur_mb_info->u1_qp_rem6 = ps_dec->u1_qp_y_rem6;
ps_cur_mb_info->u1_qpc_rem6 = ps_dec->u1_qp_u_rem6;
ps_cur_mb_info->u1_qpcr_rem6 = ps_dec->u1_qp_v_rem6;
ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
}
return OK;
}
/*!
**************************************************************************
* \if Function name : ih264d_decode_eislice \endif
*
* \brief
* Decodes an EI Slice
*
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_eislice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
{
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
WORD32 i_status = OK;
dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
dec_seq_params_t *ps_seq;
dec_svc_seq_params_t *ps_subset_seq;
dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
dec_subset_seq_params_t *ps_sps_svc_ext = NULL;
dec_nal_unit_svc_ext_params_t *ps_nal_svc_ext = NULL;
UWORD32 u4_temp;
WORD32 i_temp;
WORD32 ret;
UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
ps_nal_svc_ext = ps_svc_lyr_dec->ps_nal_svc_ext;
ps_seq = ps_dec->ps_cur_sps;
ps_subset_seq =
&ps_svc_lyr_dec->ps_subset_sps[MAX_NUM_SEQ_PARAMS + ps_seq->u1_seq_parameter_set_id];
ps_sps_svc_ext = &ps_subset_seq->s_sps_svc_ext;
ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
if(0 == ps_svc_lyr_dec->ps_nal_svc_ext->u1_quality_id)
{
/*--------------------------------------------------------------------*/
/* Read remaining contents of the slice header */
/*--------------------------------------------------------------------*/
/* dec_ref_pic_marking function */
/* G050 */
if(ps_slice->u1_nal_ref_idc != 0)
{
if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
{
dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
ps_pps->ps_sps = ps_dec->ps_cur_sps;
if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
i_temp = ih264d_read_mmco_commands(ps_dec);
ps_pps->ps_sps = ps_sps_tmp;
ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
if(i_temp < 0)
{
return ERROR_DBP_MANAGER_T;
}
ps_dec->u4_bitoffset = i_temp;
}
else
ps_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
if(!ps_sps_svc_ext->u1_slice_header_restriction_flag)
{
ps_svc_slice_params->u1_store_ref_base_pic_flag = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("SPS_SVC_EXT: u1_store_ref_base_pic_flag",
ps_svc_slice_params->u1_store_ref_base_pic_flag);
if(0 != ps_svc_slice_params->u1_store_ref_base_pic_flag)
{
return NOT_OK;
}
if(((1 == ps_nal_svc_ext->u1_use_ref_base_pic_flag) ||
(1 == ps_svc_slice_params->u1_store_ref_base_pic_flag)) &&
(!ps_nal_svc_ext->u1_idr_flag))
{
i_status = isvcd_dec_ref_base_pic_marking(
&ps_svc_slice_params->s_ref_base_pic_marking_svc_ext, ps_bitstrm);
if(i_status != OK)
{
return i_status;
}
}
}
}
}
{
/* G050 */
/* Read slice_qp_delta */
WORD64 i8_temp =
(WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
ps_slice->u1_slice_qp = (UWORD8) i8_temp;
COPYTHECONTEXT("Slice Header SVC ext: slice_qp_delta",
ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp);
}
if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
{
u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
COPYTHECONTEXT("Slice Header SVC ext: disable_deblocking_filter_idc", u4_temp);
if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
{
return ERROR_INV_SLICE_HDR_T;
}
ps_slice->u1_disable_dblk_filter_idc = u4_temp;
if(u4_temp != 1)
{
i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
{
return ERROR_INV_SLICE_HDR_T;
}
ps_slice->i1_slice_alpha_c0_offset = i_temp;
COPYTHECONTEXT("Slice Header SVC ext: slice_alpha_c0_offset_div2",
ps_slice->i1_slice_alpha_c0_offset >> 1);
i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
{
return ERROR_INV_SLICE_HDR_T;
}
ps_slice->i1_slice_beta_offset = i_temp;
COPYTHECONTEXT("Slice Header SVC ext: slice_beta_offset_div2",
ps_slice->i1_slice_beta_offset >> 1);
}
else
{
ps_slice->i1_slice_alpha_c0_offset = 0;
ps_slice->i1_slice_beta_offset = 0;
}
}
else
{
ps_slice->u1_disable_dblk_filter_idc = 0;
ps_slice->i1_slice_alpha_c0_offset = 0;
ps_slice->i1_slice_beta_offset = 0;
}
/* add the remaining part of the code for svc extension from reference */
ret = isvcd_set_default_slice_header_ext(ps_svc_lyr_dec);
if(ret != OK)
{
return ERROR_INV_SLICE_HDR_T;
}
ret = isvcd_parse_slice_header(ps_svc_lyr_dec);
if(ret != OK)
{
return ERROR_INV_SLICE_HDR_T;
}
/* Initialization to check if number of motion vector per 2 Mbs */
/* are exceeding the range or not */
ps_dec->u2_mv_2mb[0] = 0;
ps_dec->u2_mv_2mb[1] = 0;
ret = isvcd_parse_interlayer_resamp_func_init(ps_svc_lyr_dec, u2_first_mb_in_slice);
if(ret != OK)
{
return ERROR_CORRUPTED_SLICE;
}
/*set slice header cone to 2 ,to indicate correct header*/
ps_dec->u1_slice_header_done = 2;
if(!ps_svc_slice_params->u1_slice_skip_flag)
{
if(ps_pps->u1_entropy_coding_mode)
{
SWITCHOFFTRACE;
SWITCHONTRACECABAC;
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 = isvcd_get_mb_info_cabac_nonmbaff;
ret = isvcd_parse_eislice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
if(ret != OK) return ret;
SWITCHONTRACE;
SWITCHOFFTRACECABAC;
}
else
{
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 = isvcd_get_mb_info_cavlc_nonmbaff;
ret = isvcd_parse_eislice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
if(ret != OK) return ret;
}
}
else
{
return ERROR_FEATURE_UNAVAIL;
}
return OK;
}
/*****************************************************************************/
/* */
/* Function Name : isvcd_parse_eislice_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. */
/* */
/* Returns : 0 */
/* */
/* Issues : <List any issues or problems with this function> */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 24 06 2005 Kishore Draft */
/* */
/*****************************************************************************/
WORD32 isvcd_parse_eislice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
{
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
UWORD8 uc_more_data_flag;
UWORD8 u1_num_mbs, u1_mb_idx;
dec_mb_info_t *ps_cur_mb_info;
dec_svc_mb_info_t *ps_svc_cur_mb_info;
deblk_mb_t *ps_cur_deblk_mb;
dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
WORD16 i2_cur_mb_addr;
UWORD8 u1_mbaff;
UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
WORD32 ret = OK;
decoding_envirnoment_t *ps_cab_env;
UWORD8 *pu1_cur_svc_base_mode_flag;
UWORD8 u1_left_svc_base_mode_flag;
UWORD8 u1_top_svc_base_mode_flag;
UWORD32 u4_a, u4_b, u4_ctxt_inc;
dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mbaff = ps_slice->u1_mbaff_frame_flag;
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;
isvcd_init_cabac_contexts(I_SLICE, ps_dec);
ps_dec->i1_prev_mb_qp_delta = 0;
ps_cab_env = &ps_dec->s_cab_dec_env;
/* initializations */
u1_mb_idx = ps_dec->u1_mb_idx;
u1_num_mbs = u1_mb_idx;
uc_more_data_flag = 1;
i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
do
{
UWORD16 u2_mbx;
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;
}
{
UWORD8 u1_mb_type;
ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_mb_info->u1_end_of_slice = 0;
/***************************************************************/
/* 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, 0);
u2_mbx = ps_dec->u2_mbx;
ps_svc_cur_mb_info->u1_crop_window_flag =
*(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
(ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
/*********************************************************************/
/* 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 */
/***************************************************************/
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
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);
ps_svc_cur_mb_info->u1_base_mode_flag = 0;
/* Macroblock Layer Begins */
if(ps_svc_cur_mb_info->u1_crop_window_flag &&
ps_svc_slice_params->u1_adaptive_base_mode_flag)
{
pu1_cur_svc_base_mode_flag =
ps_svc_lyr_dec->pu1_svc_base_mode_flag + ps_cur_mb_info->u2_mbx;
pu1_cur_svc_base_mode_flag +=
ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride;
u1_left_svc_base_mode_flag = 0;
if(ps_dec->u1_mb_ngbr_availablity & LEFT_MB_AVAILABLE_MASK)
u1_left_svc_base_mode_flag = *(pu1_cur_svc_base_mode_flag - 1);
u1_top_svc_base_mode_flag = 0;
if(ps_dec->u1_mb_ngbr_availablity & TOP_MB_AVAILABLE_MASK)
u1_top_svc_base_mode_flag =
*(pu1_cur_svc_base_mode_flag -
ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride);
u4_a = 1;
u4_b = 1;
if(u1_top_svc_base_mode_flag)
{
u4_a = 0;
}
if(u1_left_svc_base_mode_flag)
{
u4_b = 0;
}
u4_ctxt_inc = u4_a + u4_b;
ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_decode_bin(
u4_ctxt_inc, ps_svc_lyr_dec->ps_base_mode_flag, ps_bitstrm, ps_cab_env);
COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
*pu1_cur_svc_base_mode_flag = ps_svc_cur_mb_info->u1_base_mode_flag;
}
else if(ps_svc_cur_mb_info->u1_crop_window_flag)
{
ps_svc_cur_mb_info->u1_base_mode_flag =
ps_svc_slice_params->u1_default_base_mode_flag;
}
if(!ps_svc_cur_mb_info->u1_base_mode_flag)
{
/* Decode the u1_mb_type */
u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec);
if(u1_mb_type > 25) return ERROR_MB_TYPE;
ps_cur_mb_info->u1_mb_type = u1_mb_type;
COPYTHECONTEXT("u1_mb_type", u1_mb_type);
ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
}
else
{
ps_cur_mb_info->u1_mb_type = MB_INFER;
ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL;
}
/* Parse Macroblock Data */
u1_mb_type = ps_cur_mb_info->u1_mb_type;
if(25 == 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
{
ret = isvcd_parse_imb_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
u1_mb_type);
if(ret != OK) return ret;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
}
if(ps_dec->u1_enable_mb_info)
{
ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
}
if(u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
}
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);
}
if(u1_mbaff)
{
if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
{
return ERROR_EOB_FLUSHBITS_T;
}
}
/* Next macroblock information */
i2_cur_mb_addr++;
/* Store the colocated information */
{
mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
if(ps_mv_nmb_start)
{
ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
(UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
}
else
{
return NOT_OK;
}
}
u1_num_mbs++;
}
/****************************************************************/
/* Check for End Of Row */
/****************************************************************/
u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1;
u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
u1_tfr_n_mb =
(u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
if(u1_tfr_n_mb || (!uc_more_data_flag))
{
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;
ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
}
else
{
ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb,
u1_end_of_row);
if(ret != OK) return ret;
}
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;
}
} while(uc_more_data_flag);
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 : isvcd_parse_eislice_data_cavlc */
/* */
/* 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. */
/* */
/* Returns : 0 */
/* */
/* Issues : <List any issues or problems with this function> */
/* */
/* Revision History: */
/* */
/* DD MM YYYY Author(s) Changes (Describe the changes made) */
/* 24 06 2005 Kishore Draft */
/* */
/*****************************************************************************/
WORD32 isvcd_parse_eislice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
{
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
UWORD8 uc_more_data_flag;
UWORD8 u1_num_mbs, u1_mb_idx;
dec_mb_info_t *ps_cur_mb_info;
dec_svc_mb_info_t *ps_svc_cur_mb_info;
deblk_mb_t *ps_cur_deblk_mb;
dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
WORD16 i2_cur_mb_addr;
UWORD8 u1_mbaff;
UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
WORD32 ret = OK;
dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
ps_dec->u1_qp = ps_slice->u1_slice_qp;
ih264d_update_qp(ps_dec, 0);
u1_mbaff = ps_slice->u1_mbaff_frame_flag;
u1_mb_idx = ps_dec->u1_mb_idx;
u1_num_mbs = u1_mb_idx;
uc_more_data_flag = 1;
i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
do
{
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_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
ps_cur_mb_info->u1_end_of_slice = 0;
/***************************************************************/
/* 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, 0);
ps_svc_cur_mb_info->u1_crop_window_flag =
*(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
(ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
/***************************************************************/
/* Set the deblocking parameters for this MB */
/***************************************************************/
ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
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);
ps_svc_cur_mb_info->u1_base_mode_flag = 0;
if(ps_svc_cur_mb_info->u1_crop_window_flag &&
ps_svc_slice_params->u1_adaptive_base_mode_flag)
{
ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_get_bit_h264(ps_bitstrm);
COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
}
else if(ps_svc_cur_mb_info->u1_crop_window_flag)
{
ps_svc_cur_mb_info->u1_base_mode_flag = ps_svc_slice_params->u1_default_base_mode_flag;
}
/**************************************************************/
/* Macroblock Layer Begins, Decode the u1_mb_type */
/**************************************************************/
if(!ps_svc_cur_mb_info->u1_base_mode_flag) /* Inlined ih264d_uev */
{
UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
UWORD32 u4_word, u4_ldz, u4_temp;
/***************************************************************/
/* 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);
if(u4_temp > 25) return ERROR_MB_TYPE;
u1_mb_type = u4_temp;
/* Inlined ih264d_uev */
ps_cur_mb_info->u1_mb_type = u1_mb_type;
COPYTHECONTEXT("u1_mb_type", u1_mb_type);
ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
}
else
{
ps_cur_mb_info->u1_mb_type = MB_INFER;
ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL;
}
/**************************************************************/
/* Parse Macroblock data */
/**************************************************************/
u1_mb_type = ps_cur_mb_info->u1_mb_type;
if(25 == 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
{
ret = isvcd_parse_imb_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
u1_num_mbs, u1_mb_type);
if(ret != OK) return ret;
ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
}
if(ps_dec->u1_enable_mb_info)
{
ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
}
uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
if(u1_mbaff)
{
ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
{
return ERROR_EOB_FLUSHBITS_T;
}
}
/**************************************************************/
/* Get next Macroblock address */
/**************************************************************/
i2_cur_mb_addr++;
/* Store the colocated information */
{
mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
if(ps_mv_nmb_start)
{
ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
(UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
}
else
{
return NOT_OK;
}
}
u1_num_mbs++;
/****************************************************************/
/* Check for End Of Row */
/****************************************************************/
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_tfr_n_mb =
(u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
if(u1_tfr_n_mb || (!uc_more_data_flag))
{
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;
ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
}
else
{
ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
u1_num_mbs_next, u1_tfr_n_mb,
u1_end_of_row);
if(ret != OK) return ret;
}
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;
}
} while(uc_more_data_flag);
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;
}
/*!
**************************************************************************
* \if Function name : ParseIMbCab \endif
*
* \brief
* This function parses CABAC syntax of a I MB. If 16x16 Luma DC transform
* is also done here. Transformed Luma DC values are copied in their
* 0th pixel location of corrosponding CoeffBlock.
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_imb_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_type)
{
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
WORD8 i1_delta_qp;
UWORD8 u1_cbp;
UWORD8 u1_offset;
/* Variables for handling Cabac contexts */
ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
ctxt_inc_mb_info_t *ps_left_ctxt = ps_dec->p_left_ctxt_mb_info;
dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
bin_ctxt_model_t *p_bin_ctxt;
UWORD8 u1_intra_chrom_pred_mode;
UWORD8 u1_dc_block_flag = 0;
WORD32 ret;
ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
if(ps_left_ctxt == ps_dec->ps_def_ctxt_mb_info)
{
ps_dec->pu1_left_yuv_dc_csbp[0] = 0xf;
}
if(ps_dec->ps_cur_slice->u1_slice_type != I_SLICE)
{
MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);
*((UWORD32 *) ps_dec->pi1_left_ref_idx_ctxt_inc) = 0;
MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0);
memset(p_curr_ctxt->i1_ref_idx, 0, 4);
}
/* default */
ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB;
if(!ps_svc_cur_mb_info->u1_base_mode_flag)
{
if(u1_mb_type == I_4x4_MB)
{
ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
p_curr_ctxt->u1_mb_type = CAB_I4x4;
u1_offset = 0;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
/*--------------------------------------------------------------------*/
/* Read transform_size_8x8_flag if present */
/*--------------------------------------------------------------------*/
if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_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 the IntraPrediction modes for LUMA */
/*--------------------------------------------------------------------*/
if(!ps_cur_mb_info->u1_tran_form8x8)
{
UWORD8 *pu1_temp;
ih264d_read_intra_pred_modes_cabac(ps_dec,
((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16),
ps_cur_mb_info->u1_tran_form8x8);
pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
pu1_temp += 32;
ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
}
else
{
UWORD8 *pu1_temp;
ih264d_read_intra_pred_modes_cabac(ps_dec,
((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4),
ps_cur_mb_info->u1_tran_form8x8);
pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
pu1_temp += 8;
ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
}
/*--------------------------------------------------------------------*/
/* Read the IntraPrediction mode for CHROMA */
/*--------------------------------------------------------------------*/
u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec);
COPYTHECONTEXT("intra_chroma_pred_mode", u1_intra_chrom_pred_mode);
p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode =
u1_intra_chrom_pred_mode;
/*--------------------------------------------------------------------*/
/* Read the Coded block pattern */
/*--------------------------------------------------------------------*/
u1_cbp = 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;
/*--------------------------------------------------------------------*/
/* Read mb_qp_delta */
/*--------------------------------------------------------------------*/
if(ps_cur_mb_info->u1_cbp)
{
ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
if(ret != OK) return ret;
COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
if(i1_delta_qp != 0)
{
ret = ih264d_update_qp(ps_dec, i1_delta_qp);
if(ret != OK) return ret;
}
}
else
ps_dec->i1_prev_mb_qp_delta = 0;
p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
}
else
{
u1_offset = 1;
ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;
p_curr_ctxt->u1_mb_type = CAB_I16x16;
ps_cur_mb_info->u1_tran_form8x8 = 0;
p_curr_ctxt->u1_transform8x8_ctxt = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
/*--------------------------------------------------------------------*/
/* Read the IntraPrediction mode for CHROMA */
/*--------------------------------------------------------------------*/
u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec);
if(u1_intra_chrom_pred_mode > 3) return ERROR_CHROMA_PRED_MODE;
COPYTHECONTEXT("Chroma intra_chroma_pred_mode pred mode", u1_intra_chrom_pred_mode);
p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode =
u1_intra_chrom_pred_mode;
/*--------------------------------------------------------------------*/
/* Read the Coded block pattern */
/*--------------------------------------------------------------------*/
u1_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2];
ps_cur_mb_info->u1_cbp = u1_cbp;
p_curr_ctxt->u1_cbp = u1_cbp;
/*--------------------------------------------------------------------*/
/* Read mb_qp_delta */
/*--------------------------------------------------------------------*/
ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
if(ret != OK) return ret;
COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
if(i1_delta_qp != 0)
{
ret = ih264d_update_qp(ps_dec, i1_delta_qp);
if(ret != OK) return ret;
}
{
WORD16 i_scaleFactor;
WORD16 *pi2_scale_matrix_ptr;
/*******************************************************************/
/* for luma DC coefficients the scaling is done during the parsing */
/* to preserve the precision */
/*******************************************************************/
if(ps_dec->s_high_profile.u1_scaling_present)
{
pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0];
}
else
{
i_scaleFactor = 16;
pi2_scale_matrix_ptr = &i_scaleFactor;
}
{
ctxt_inc_mb_info_t *ps_top_ctxt = ps_dec->p_top_ctxt_mb_info;
UWORD8 uc_a, uc_b;
UWORD32 u4_ctx_inc;
INC_SYM_COUNT(&(ps_dec->s_cab_dec_env));
/* if MbAddrN not available then CondTermN = 1 */
uc_b = ((ps_top_ctxt->u1_yuv_dc_csbp) & 0x01);
/* if MbAddrN not available then CondTermN = 1 */
uc_a = ((ps_dec->pu1_left_yuv_dc_csbp[0]) & 0x01);
u4_ctx_inc = (uc_a + (uc_b << 1));
{
WORD16 pi2_dc_coef[16] = {0};
tu_sblk4x4_coeff_data_t *ps_tu_4x4 =
(tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data;
WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data;
p_bin_ctxt = (ps_dec->p_cbf_t[LUMA_DC_CTXCAT]) + u4_ctx_inc;
u1_dc_block_flag = ih264d_read_coeff4x4_cabac(
ps_bitstrm, LUMA_DC_CTXCAT,
ps_dec->p_significant_coeff_flag_t[LUMA_DC_CTXCAT], ps_dec, p_bin_ctxt);
/* Store coded_block_flag */
p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
p_curr_ctxt->u1_yuv_dc_csbp |= u1_dc_block_flag;
if(u1_dc_block_flag)
{
WORD32 pi4_tmp[16] = {0};
memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef));
ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef,
ps_dec->pu1_inv_scan);
PROFILE_DISABLE_IQ_IT_RECON()
ps_dec->pf_ihadamard_scaling_4x4(
pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y,
(UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp);
pi2_coeff_block += 16;
ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block;
SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0);
}
}
}
}
}
ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
ps_dec->pu1_left_yuv_dc_csbp[0] |= u1_dc_block_flag;
}
else
{
u1_offset = 0;
/*--------------------------------------------------------------------*/
/* Read the Coded block pattern */
/*--------------------------------------------------------------------*/
u1_cbp = 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_yuv_dc_csbp &= 0xFE;
ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
p_curr_ctxt->u1_mb_type = CAB_INFERRED;
p_curr_ctxt->u1_intra_chroma_pred_mode = 0;
ps_cur_mb_info->u1_tran_form8x8 = 0;
ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
/*--------------------------------------------------------------------*/
/* Read transform_size_8x8_flag if present */
/*--------------------------------------------------------------------*/
if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (u1_cbp & 0xf))
{
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(ps_cur_mb_info->u1_cbp)
{
ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
if(ret != OK) return ret;
COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
if(i1_delta_qp != 0)
{
ret = ih264d_update_qp(ps_dec, i1_delta_qp);
if(ret != OK) return ret;
}
}
else
ps_dec->i1_prev_mb_qp_delta = 0;
}
ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, u1_offset);
if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
return OK;
}
/*!
**************************************************************************
* \if Function name : isvcd_decode_islice \endif
*
* \brief
* Decodes an I Slice
*
*
* \return
* 0 on Success and Error code otherwise
**************************************************************************
*/
WORD32 isvcd_parse_islice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
{
dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
UWORD32 u4_temp;
WORD32 i_temp;
WORD32 ret;
/*--------------------------------------------------------------------*/
/* Read remaining contents of the slice header */
/*--------------------------------------------------------------------*/
/* dec_ref_pic_marking function */
/* G050 */
if(ps_slice->u1_nal_ref_idc != 0)
{
if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
{
dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
ps_pps->ps_sps = ps_dec->ps_cur_sps;
if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
i_temp = ih264d_read_mmco_commands(ps_dec);
ps_pps->ps_sps = ps_sps_tmp;
ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
if(i_temp < 0)
{
return ERROR_DBP_MANAGER_T;
}
ps_dec->u4_bitoffset = i_temp;
}
else
ps_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
}
{
/* G050 */
/* Read slice_qp_delta */
WORD64 i8_temp =
(WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
ps_slice->u1_slice_qp = (UWORD8) i8_temp;
COPYTHECONTEXT("SH: slice_qp_delta", ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp);
}
if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
{
u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp);
if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
{
return ERROR_INV_SLICE_HDR_T;
}
ps_slice->u1_disable_dblk_filter_idc = u4_temp;
if(u4_temp != 1)
{
i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
{
return ERROR_INV_SLICE_HDR_T;
}
ps_slice->i1_slice_alpha_c0_offset = i_temp;
COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
ps_slice->i1_slice_alpha_c0_offset >> 1);
i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
{
return ERROR_INV_SLICE_HDR_T;
}
ps_slice->i1_slice_beta_offset = i_temp;
COPYTHECONTEXT("SH: slice_beta_offset_div2", ps_slice->i1_slice_beta_offset >> 1);
}
else
{
ps_slice->i1_slice_alpha_c0_offset = 0;
ps_slice->i1_slice_beta_offset = 0;
}
}
else
{
ps_slice->u1_disable_dblk_filter_idc = 0;
ps_slice->i1_slice_alpha_c0_offset = 0;
ps_slice->i1_slice_beta_offset = 0;
}
/* Initialization to check if number of motion vector per 2 Mbs */
/* are exceeding the range or not */
ps_dec->u2_mv_2mb[0] = 0;
ps_dec->u2_mv_2mb[1] = 0;
ret = isvcd_parse_interlayer_resamp_func_init(ps_svc_lyr_dec, u2_first_mb_in_slice);
if(ret != OK)
{
return ERROR_CORRUPTED_SLICE;
}
/*set slice header cone to 2 ,to indicate correct header*/
ps_dec->u1_slice_header_done = 2;
if(ps_pps->u1_entropy_coding_mode)
{
SWITCHOFFTRACE;
SWITCHONTRACECABAC;
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 = isvcd_get_mb_info_cabac_nonmbaff;
ret = isvcd_parse_islice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
if(ret != OK) return ret;
SWITCHONTRACE;
SWITCHOFFTRACECABAC;
}
else
{
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 = isvcd_get_mb_info_cavlc_nonmbaff;
ret = isvcd_parse_islice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
if(ret != OK) return ret;
}
return OK;
}
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