/*!
********************************************************************************************
* \brief
* Write a slice header
********************************************************************************************
*/
int SliceHeader(int first_mb_in_slice)
{
//ue_v(img.current_mb_nr);
ue_v(first_mb_in_slice);
ue_v(get_picture_type ());
ue_v(0);
//assert (img.frame_num < 1<<(LOG2_MAX_FRAME_NUM_MINUS4+4)); // check that it fits
u_v (LOG2_MAX_FRAME_NUM_MINUS4 + 4, img.frame_num);
//added by eskim as what jjs said for another decoder to decode result stream, such as JM11 and GOM player
if(img.number == 0)
ue_v (0);
img.pic_order_cnt_lsb = (img.framepoc & 0xff);
u_v (LOG2_MAX_PIC_ORDER_CNT_LSB_MINUS4+4, img.pic_order_cnt_lsb);
// ist there any sense in the following assignments ???
if (img.type == P_SLICE)
{
// num_ref_idx_active_override_flag here always 1
u_1 (1);
ue_v (img.num_ref_idx_l0_active-1);
}
ref_pic_list_reordering();
if (img.nal_reference_idc)
dec_ref_pic_marking();
// we transmit zero in the pps, so here the real QP
se_v((img.qp - 26));
if (input.LFSendParameters)
{
ue_v(input.LFDisableIdc); // Turn loop filter on/off on slice basis
if (input.LFDisableIdc!=1)
{
se_v (input.LFAlphaC0Offset / 2);
se_v (input.LFBetaOffset / 2);
}
}
//MSG(SLICE_HEADER);
return 0;
}
/*!
************************************************************************
* \brief
* Interpret the Decoded Picture Buffer Management Repetition SEI message
* \param payload
* a pointer that point to the sei payload
* \param size
* the size of the sei message
* \param img
* the image pointer
*
************************************************************************
*/
void interpret_dec_ref_pic_marking_repetition_info( byte* payload, int size, ImageParameters *img )
{
int original_idr_flag, original_frame_num;
DecRefPicMarking_t *tmp_drpm;
DecRefPicMarking_t *old_drpm;
int old_idr_flag , old_no_output_of_prior_pics_flag, old_long_term_reference_flag , old_adaptive_ref_pic_buffering_flag;
Bitstream* buf;
#ifdef ESLCPP
buf = (Bitstream*)malloc(sizeof(Bitstream));
#else
buf = malloc(sizeof(Bitstream));
#endif
buf->bitstream_length = size;
buf->streamBuffer = payload;
buf->frame_bitoffset = 0;
UsedBits = 0;
original_idr_flag = u_1 ( "SEI: original_idr_flag" , buf);
original_frame_num = ue_v( "SEI: original_frame_num" , buf);
#ifdef PRINT_DEC_REF_PIC_MARKING
printf("Decoded Picture Buffer Management Repetition SEI message\n");
printf("original_idr_flag = %d\n", original_idr_flag);
printf("original_frame_num = %d\n", original_frame_num);
#endif
// we need to save everything that is probably overwritten in dec_ref_pic_marking()
old_drpm = img->dec_ref_pic_marking_buffer;
old_idr_flag = img->idr_flag;
old_no_output_of_prior_pics_flag = img->no_output_of_prior_pics_flag;
old_long_term_reference_flag = img->long_term_reference_flag;
old_adaptive_ref_pic_buffering_flag = img->adaptive_ref_pic_buffering_flag;
// set new initial values
img->idr_flag = original_idr_flag;
img->dec_ref_pic_marking_buffer = NULL;
dec_ref_pic_marking(buf);
// print out decoded values
#ifdef PRINT_DEC_REF_PIC_MARKING
if (img->idr_flag)
{
printf("no_output_of_prior_pics_flag = %d\n", img->no_output_of_prior_pics_flag);
printf("long_term_reference_flag = %d\n", img->long_term_reference_flag);
}
else
{
printf("adaptive_ref_pic_buffering_flag = %d\n", img->adaptive_ref_pic_buffering_flag);
if (img->adaptive_ref_pic_buffering_flag)
{
tmp_drpm=img->dec_ref_pic_marking_buffer;
while (tmp_drpm != NULL)
{
printf("memory_management_control_operation = %d\n", tmp_drpm->memory_management_control_operation);
if ((tmp_drpm->memory_management_control_operation==1)||(tmp_drpm->memory_management_control_operation==3))
{
printf("difference_of_pic_nums_minus1 = %d\n", tmp_drpm->difference_of_pic_nums_minus1);
}
if (tmp_drpm->memory_management_control_operation==2)
{
printf("long_term_pic_num = %d\n", tmp_drpm->long_term_pic_num);
}
if ((tmp_drpm->memory_management_control_operation==3)||(tmp_drpm->memory_management_control_operation==6))
{
printf("long_term_frame_idx = %d\n", tmp_drpm->long_term_frame_idx);
}
if (tmp_drpm->memory_management_control_operation==4)
{
printf("max_long_term_pic_idx_plus1 = %d\n", tmp_drpm->max_long_term_frame_idx_plus1);
}
tmp_drpm = tmp_drpm->Next;
}
}
}
#endif
while (img->dec_ref_pic_marking_buffer)
{
tmp_drpm = img->dec_ref_pic_marking_buffer->Next;
free (tmp_drpm);
}
// restore old values in img
img->dec_ref_pic_marking_buffer = old_drpm;
img->idr_flag = old_idr_flag;
img->no_output_of_prior_pics_flag = old_no_output_of_prior_pics_flag;
img->long_term_reference_flag = old_long_term_reference_flag;
img->adaptive_ref_pic_buffering_flag = old_adaptive_ref_pic_buffering_flag;
free (buf);
#ifdef PRINT_DEC_REF_PIC_MARKING
#undef PRINT_DEC_REF_PIC_MARKING
#endif
}
/*!
************************************************************************
* \brief
* read the scond part of the header (without the pic_parameter_set_id
* \return
* Length of the second part of the Slice header in bits
************************************************************************
*/
int RestOfSliceHeader(Slice *currSlice)
{
VideoParameters *p_Vid = currSlice->p_Vid;
InputParameters *p_Inp = currSlice->p_Inp;
seq_parameter_set_rbsp_t *active_sps = p_Vid->active_sps;
byte dP_nr = assignSE2partition[currSlice->dp_mode][SE_HEADER];
DataPartition *partition = &(currSlice->partArr[dP_nr]);
Bitstream *currStream = partition->bitstream;
int val, len;
currSlice->frame_num = u_v (active_sps->log2_max_frame_num_minus4 + 4, "SH: frame_num", currStream);
/* Tian Dong: frame_num gap processing, if found */
if(currSlice->idr_flag) //if (p_Vid->idr_flag)
{
p_Vid->pre_frame_num = currSlice->frame_num;
// picture error concealment
p_Vid->last_ref_pic_poc = 0;
assert(currSlice->frame_num == 0);
}
if (active_sps->frame_mbs_only_flag)
{
p_Vid->structure = FRAME;
currSlice->field_pic_flag=0;
}
else
{
// field_pic_flag u(1)
currSlice->field_pic_flag = u_1("SH: field_pic_flag", currStream);
if (currSlice->field_pic_flag)
{
// bottom_field_flag u(1)
currSlice->bottom_field_flag = (byte) u_1("SH: bottom_field_flag", currStream);
p_Vid->structure = currSlice->bottom_field_flag ? BOTTOM_FIELD : TOP_FIELD;
}
else
{
p_Vid->structure = FRAME;
currSlice->bottom_field_flag = FALSE;
}
}
currSlice->structure = (PictureStructure) p_Vid->structure;
currSlice->mb_aff_frame_flag = (active_sps->mb_adaptive_frame_field_flag && (currSlice->field_pic_flag==0));
//currSlice->mb_aff_frame_flag = p_Vid->mb_aff_frame_flag;
if (p_Vid->structure == FRAME )
assert (currSlice->field_pic_flag == 0);
if (p_Vid->structure == TOP_FIELD )
assert (currSlice->field_pic_flag == 1 && (currSlice->bottom_field_flag == FALSE));
if (p_Vid->structure == BOTTOM_FIELD)
assert (currSlice->field_pic_flag == 1 && (currSlice->bottom_field_flag == TRUE ));
if (currSlice->idr_flag)
{
currSlice->idr_pic_id = ue_v("SH: idr_pic_id", currStream);
}
if (active_sps->pic_order_cnt_type == 0)
{
currSlice->pic_order_cnt_lsb = u_v(active_sps->log2_max_pic_order_cnt_lsb_minus4 + 4, "SH: pic_order_cnt_lsb", currStream);
if( p_Vid->active_pps->bottom_field_pic_order_in_frame_present_flag == 1 && !currSlice->field_pic_flag )
currSlice->delta_pic_order_cnt_bottom = se_v("SH: delta_pic_order_cnt_bottom", currStream);
else
currSlice->delta_pic_order_cnt_bottom = 0;
}
if( active_sps->pic_order_cnt_type == 1)
{
if ( !active_sps->delta_pic_order_always_zero_flag )
{
currSlice->delta_pic_order_cnt[ 0 ] = se_v("SH: delta_pic_order_cnt[0]", currStream);
if( p_Vid->active_pps->bottom_field_pic_order_in_frame_present_flag == 1 && !currSlice->field_pic_flag )
currSlice->delta_pic_order_cnt[ 1 ] = se_v("SH: delta_pic_order_cnt[1]", currStream);
else
currSlice->delta_pic_order_cnt[ 1 ] = 0; // set to zero if not in stream
}
else
{
currSlice->delta_pic_order_cnt[ 0 ] = 0;
currSlice->delta_pic_order_cnt[ 1 ] = 0;
}
}
//! redundant_pic_cnt is missing here
if (p_Vid->active_pps->redundant_pic_cnt_present_flag)
{
currSlice->redundant_pic_cnt = ue_v ("SH: redundant_pic_cnt", currStream);
}
if(currSlice->slice_type == B_SLICE)
{
currSlice->direct_spatial_mv_pred_flag = u_1 ("SH: direct_spatial_mv_pred_flag", currStream);
}
currSlice->num_ref_idx_active[LIST_0] = p_Vid->active_pps->num_ref_idx_l0_active_minus1 + 1;
currSlice->num_ref_idx_active[LIST_1] = p_Vid->active_pps->num_ref_idx_l1_active_minus1 + 1;
if(p_Vid->type==P_SLICE || p_Vid->type == SP_SLICE || p_Vid->type==B_SLICE)
{
val = u_1 ("SH: num_ref_idx_override_flag", currStream);
if (val)
{
currSlice->num_ref_idx_active[LIST_0] = 1 + ue_v ("SH: num_ref_idx_l0_active_minus1", currStream);
if(p_Vid->type==B_SLICE)
{
currSlice->num_ref_idx_active[LIST_1] = 1 + ue_v ("SH: num_ref_idx_l1_active_minus1", currStream);
}
}
}
if (currSlice->slice_type!=B_SLICE)
{
currSlice->num_ref_idx_active[LIST_1] = 0;
}
#if (MVC_EXTENSION_ENABLE)
if (currSlice->svc_extension_flag == 0 || currSlice->svc_extension_flag == 1)
ref_pic_list_mvc_modification(currSlice);
else
ref_pic_list_reordering(currSlice);
#else
ref_pic_list_reordering(currSlice);
#endif
currSlice->weighted_pred_flag = (unsigned short) ((currSlice->slice_type == P_SLICE || currSlice->slice_type == SP_SLICE)
? p_Vid->active_pps->weighted_pred_flag
: (currSlice->slice_type == B_SLICE && p_Vid->active_pps->weighted_bipred_idc == 1));
currSlice->weighted_bipred_idc = (unsigned short) (currSlice->slice_type == B_SLICE && p_Vid->active_pps->weighted_bipred_idc > 0);
if ((p_Vid->active_pps->weighted_pred_flag&&(p_Vid->type==P_SLICE|| p_Vid->type == SP_SLICE))||
(p_Vid->active_pps->weighted_bipred_idc==1 && (p_Vid->type==B_SLICE)))
{
pred_weight_table(currSlice);
}
if (currSlice->nal_reference_idc)
dec_ref_pic_marking(p_Vid, currStream, currSlice);
if (p_Vid->active_pps->entropy_coding_mode_flag && p_Vid->type!=I_SLICE && p_Vid->type!=SI_SLICE)
{
currSlice->model_number = ue_v("SH: cabac_init_idc", currStream);
}
else
{
currSlice->model_number = 0;
}
currSlice->slice_qp_delta = val = se_v("SH: slice_qp_delta", currStream);
//currSlice->qp = p_Vid->qp = 26 + p_Vid->active_pps->pic_init_qp_minus26 + val;
currSlice->qp = 26 + p_Vid->active_pps->pic_init_qp_minus26 + val;
if ((currSlice->qp < -p_Vid->bitdepth_luma_qp_scale) || (currSlice->qp > 51))
error ("slice_qp_delta makes slice_qp_y out of range", 500);
if(p_Vid->type==SP_SLICE || p_Vid->type == SI_SLICE)
{
if(p_Vid->type==SP_SLICE)
{
currSlice->sp_switch = u_1 ("SH: sp_for_switch_flag", currStream);
}
currSlice->slice_qs_delta = val = se_v("SH: slice_qs_delta", currStream);
currSlice->qs = 26 + p_Vid->active_pps->pic_init_qs_minus26 + val;
if ((currSlice->qs < 0) || (currSlice->qs > 51))
error ("slice_qs_delta makes slice_qs_y out of range", 500);
}
if ( !HI_INTRA_ONLY_PROFILE || (HI_INTRA_ONLY_PROFILE && (p_Inp->intra_profile_deblocking == 1) ))
//then read flags and parameters from bistream
{
if (p_Vid->active_pps->deblocking_filter_control_present_flag)
{
currSlice->DFDisableIdc = (short) ue_v ("SH: disable_deblocking_filter_idc", currStream);
if (currSlice->DFDisableIdc!=1)
{
currSlice->DFAlphaC0Offset = (short) (2 * se_v("SH: slice_alpha_c0_offset_div2", currStream));
currSlice->DFBetaOffset = (short) (2 * se_v("SH: slice_beta_offset_div2", currStream));
}
else
{
currSlice->DFAlphaC0Offset = currSlice->DFBetaOffset = 0;
}
}
else
{
currSlice->DFDisableIdc = currSlice->DFAlphaC0Offset = currSlice->DFBetaOffset = 0;
}
}
else //By default the Loop Filter is Off
{ //444_TEMP_NOTE: change made below. 08/07/07
//still need to parse the SEs (read flags and parameters from bistream) but will ignore
if (p_Vid->active_pps->deblocking_filter_control_present_flag)
{
currSlice->DFDisableIdc = (short) ue_v ("SH: disable_deblocking_filter_idc", currStream);
if (currSlice->DFDisableIdc!=1)
{
currSlice->DFAlphaC0Offset = (short) (2 * se_v("SH: slice_alpha_c0_offset_div2", currStream));
currSlice->DFBetaOffset = (short) (2 * se_v("SH: slice_beta_offset_div2", currStream));
}
}//444_TEMP_NOTE. the end of change. 08/07/07
//Ignore the SEs, by default the Loop Filter is Off
currSlice->DFDisableIdc =1;
currSlice->DFAlphaC0Offset = currSlice->DFBetaOffset = 0;
}
if (p_Vid->active_pps->num_slice_groups_minus1>0 && p_Vid->active_pps->slice_group_map_type>=3 &&
p_Vid->active_pps->slice_group_map_type<=5)
{
len = (active_sps->pic_height_in_map_units_minus1+1)*(active_sps->pic_width_in_mbs_minus1+1)/
(p_Vid->active_pps->slice_group_change_rate_minus1+1);
if (((active_sps->pic_height_in_map_units_minus1+1)*(active_sps->pic_width_in_mbs_minus1+1))%
(p_Vid->active_pps->slice_group_change_rate_minus1+1))
len +=1;
len = CeilLog2(len+1);
currSlice->slice_group_change_cycle = u_v (len, "SH: slice_group_change_cycle", currStream);
}
p_Vid->PicHeightInMbs = p_Vid->FrameHeightInMbs / ( 1 + currSlice->field_pic_flag );
p_Vid->PicSizeInMbs = p_Vid->PicWidthInMbs * p_Vid->PicHeightInMbs;
p_Vid->FrameSizeInMbs = p_Vid->PicWidthInMbs * p_Vid->FrameHeightInMbs;
return p_Dec->UsedBits;
}
/***********************************************************************
*\brief Header_parsing
* - Code not related to baseline removed.
*
* "Muhammad Tahir Awan" <*****@*****.**>,
* "Umair Razzak" <*****@*****.**>
****************************
* Changes till 21-11-2005
***********************************************************************
*/
int RestOfSliceHeader_baseline( h264_decoder* dec_params )
{
Slice *currSlice = dec_params->img->currentSlice;
//int dP_nr = assignSE2partition[PAR_DP_1][SE_HEADER];
//int dP_nr = 0;
DataPartition *partition = &(currSlice->partArr[0]);
Bitstream *currStream = partition->bitstream;
int val, len;
// reading frame number (7.3.3)
dec_params->img->frame_num = u_v (dec_params->active_sps->log2_max_frame_num_minus4 + 4, "SH: frame_num", currStream,dec_params);
/* Tian Dong: frame_num gap processing, if found */
if (dec_params->img->idr_flag)
{
dec_params->img->pre_frame_num = dec_params->img->frame_num;
assert(dec_params->img->frame_num == 0);
}
//{
// dec_params->img->structure = FRAME;
//}
//currSlice->structure = FRAME;
//assert (dec_params->img->field_pic_flag == 0);
if (dec_params->img->idr_flag)
{
dec_params->img->idr_pic_id = ue_v("SH: idr_pic_id", currStream,dec_params);
}
if (dec_params->active_sps->pic_order_cnt_type == 0)
{
dec_params->img->pic_order_cnt_lsb = u_v(dec_params->active_sps->log2_max_pic_order_cnt_lsb_minus4 + 4, "SH: pic_order_cnt_lsb", currStream,dec_params);
if( dec_params->active_pps->pic_order_present_flag == 1)
dec_params->img->delta_pic_order_cnt_bottom = se_v("SH: delta_pic_order_cnt_bottom", currStream,dec_params);
else
dec_params->img->delta_pic_order_cnt_bottom = 0;
}
if( dec_params->active_sps->pic_order_cnt_type == 1 && !dec_params->active_sps->delta_pic_order_always_zero_flag )
{
dec_params->img->delta_pic_order_cnt[ 0 ] = se_v("SH: delta_pic_order_cnt[0]", currStream,dec_params);
if( dec_params->active_pps->pic_order_present_flag == 1 )
dec_params->img->delta_pic_order_cnt[ 1 ] = se_v("SH: delta_pic_order_cnt[1]", currStream,dec_params);
}else
{
if (dec_params->active_sps->pic_order_cnt_type == 1)
{
dec_params->img->delta_pic_order_cnt[ 0 ] = 0;
dec_params->img->delta_pic_order_cnt[ 1 ] = 0;
}
}
//! redundant_pic_cnt is missing here
if (dec_params->active_pps->redundant_pic_cnt_present_flag)
{
//dec_params->img->redundant_pic_cnt = ue_v ("SH: redundant_pic_cnt", currStream,dec_params);
}
if(dec_params->img->type==B_SLICE)
{
dec_params->img->direct_spatial_mv_pred_flag = u_1 ("SH: direct_spatial_mv_pred_flag", currStream,dec_params);
}
dec_params->img->num_ref_idx_l0_active = dec_params->active_pps->num_ref_idx_l0_active_minus1 + 1;
dec_params->img->num_ref_idx_l1_active = dec_params->active_pps->num_ref_idx_l1_active_minus1 + 1;
if(dec_params->img->type==P_SLICE || dec_params->img->type==B_SLICE)// added by Faisal Abdullah for B frames
{
val = u_1 ("SH: num_ref_idx_override_flag", currStream,dec_params);
if (val)
{
dec_params->img->num_ref_idx_l0_active = 1 + ue_v ("SH: num_ref_idx_l0_active_minus1", currStream,dec_params);
if(dec_params->img->type==B_SLICE)
{
dec_params->img->num_ref_idx_l1_active = 1 + ue_v ("SH: num_ref_idx_l1_active_minus1", currStream,dec_params);
}
}
}
if (dec_params->img->type!=B_SLICE)
{
dec_params->img->num_ref_idx_l1_active = 0;
}
ref_pic_list_reordering( dec_params );
// for weighted prediction in B and P frames
dec_params->img->apply_weights = ((dec_params->active_pps->weighted_pred_flag && (currSlice->picture_type == P_SLICE ) )
|| ((dec_params->active_pps->weighted_bipred_idc > 0 ) && (currSlice->picture_type == B_SLICE)));
/*dec_params->img->apply_weights = ((dec_params->active_pps->weighted_pred_flag && (currSlice->picture_type == P_SLICE ) )
|| ((dec_params->active_pps->weighted_bipred_idc == 1 ) && (currSlice->picture_type == B_SLICE)));*/
dec_params->img->apply_weights_bi = 0;
dec_params->img->apply_weights_luma = 0;
dec_params->img->apply_weights_chr = 0;
if ((dec_params->active_pps->weighted_pred_flag&&(dec_params->img->type==P_SLICE))||
(dec_params->active_pps->weighted_bipred_idc==1 && (dec_params->img->type==B_SLICE)))
{
pred_weight_table(dec_params);
}
dec_params->img->apply_weights_bi = (dec_params->active_pps->weighted_bipred_idc==2 && (dec_params->img->type==B_SLICE));
if (dec_params->img->nal_reference_idc)
dec_ref_pic_marking(currStream,dec_params);
//__CABAC__
if (dec_params->active_pps->entropy_coding_mode_flag && dec_params->img->type!=I_SLICE && dec_params->img->type!=SI_SLICE)
{
dec_params->img->model_number = ue_v("SH: cabac_init_idc", currStream, dec_params);
}
else
{
dec_params->img->model_number = 0;
}
//__CABAC__
val = se_v("SH: slice_qp_delta", currStream,dec_params);
//currSlice->qp = dec_params->img->qp = 26 + dec_params->active_pps->pic_init_qp_minus26 + val;
dec_params->img->qp = 26 + dec_params->active_pps->pic_init_qp_minus26 + val;
//currSlice->slice_qp_delta = val;
if (dec_params->active_pps->deblocking_filter_control_present_flag)
{
currSlice->LFDisableIdc = ue_v ("SH: disable_deblocking_filter_idc", currStream,dec_params);
if (currSlice->LFDisableIdc!=1)
{
currSlice->LFAlphaC0Offset = 2 * se_v("SH: slice_alpha_c0_offset_div2", currStream,dec_params);
currSlice->LFBetaOffset = 2 * se_v("SH: slice_beta_offset_div2", currStream,dec_params);
}
else
{
currSlice->LFAlphaC0Offset = currSlice->LFBetaOffset = 0;
}
}
else
{
currSlice->LFDisableIdc = currSlice->LFAlphaC0Offset = currSlice->LFBetaOffset = 0;
}
if (dec_params->active_pps->num_slice_groups_minus1>0 && dec_params->active_pps->slice_group_map_type>=3 &&
dec_params->active_pps->slice_group_map_type<=5)
{
len = (dec_params->active_sps->pic_height_in_map_units_minus1+1)*(dec_params->active_sps->pic_width_in_mbs_minus1+1)/
(dec_params->active_pps->slice_group_change_rate_minus1+1);
if (((dec_params->active_sps->pic_height_in_map_units_minus1+1)*(dec_params->active_sps->pic_width_in_mbs_minus1+1))%
(dec_params->active_pps->slice_group_change_rate_minus1+1))
len +=1;
len = CeilLog2(len+1);
dec_params->img->slice_group_change_cycle = u_v (len, "SH: slice_group_change_cycle", currStream,dec_params);
}
dec_params->img->FrameSizeInMbs = dec_params->img->FrameWidthInMbs * dec_params->img->FrameHeightInMbs;
return dec_params->UsedBits;
}
/*!
************************************************************************
* \brief
* read the scond part of the header (without the pic_parameter_set_id
* \return
* Length of the second part of the Slice header in bits
************************************************************************
*/
int RestOfSliceHeader(Slice *currSlice)
{
VideoParameters *p_Vid = currSlice->p_Vid;
InputParameters *p_Inp = currSlice->p_Inp;
seq_parameter_set_rbsp_t *active_sps = p_Vid->active_sps;
byte dP_nr = assignSE2partition[currSlice->dp_mode][SE_HEADER];
DataPartition *partition = &(currSlice->partArr[dP_nr]);
Bitstream *currStream = partition->bitstream;
int val, len;
currSlice->frame_num = read_u_v (active_sps->log2_max_frame_num_minus4 + 4, "SH: frame_num", currStream, &p_Dec->UsedBits);
/* Tian Dong: frame_num gap processing, if found */
if(currSlice->idr_flag) //if (p_Vid->idr_flag)
{
p_Vid->pre_frame_num = currSlice->frame_num;
// picture error concealment
p_Vid->last_ref_pic_poc = 0;
assert(currSlice->frame_num == 0);
}
if (active_sps->frame_mbs_only_flag)
{
p_Vid->structure = FRAME;
currSlice->field_pic_flag=0;
}
else
{
// field_pic_flag u(1)
currSlice->field_pic_flag = read_u_1("SH: field_pic_flag", currStream, &p_Dec->UsedBits);
if (currSlice->field_pic_flag)
{
// bottom_field_flag u(1)
currSlice->bottom_field_flag = (byte) read_u_1("SH: bottom_field_flag", currStream, &p_Dec->UsedBits);
p_Vid->structure = currSlice->bottom_field_flag ? BOTTOM_FIELD : TOP_FIELD;
}
else
{
p_Vid->structure = FRAME;
currSlice->bottom_field_flag = FALSE;
}
}
currSlice->structure = (PictureStructure) p_Vid->structure;
currSlice->mb_aff_frame_flag = (active_sps->mb_adaptive_frame_field_flag && (currSlice->field_pic_flag==0));
//currSlice->mb_aff_frame_flag = p_Vid->mb_aff_frame_flag;
if (currSlice->structure == FRAME )
assert (currSlice->field_pic_flag == 0);
if (currSlice->structure == TOP_FIELD )
assert (currSlice->field_pic_flag == 1 && (currSlice->bottom_field_flag == FALSE));
if (currSlice->structure == BOTTOM_FIELD)
assert (currSlice->field_pic_flag == 1 && (currSlice->bottom_field_flag == TRUE ));
if (currSlice->idr_flag)
{
currSlice->idr_pic_id = read_ue_v("SH: idr_pic_id", currStream, &p_Dec->UsedBits);
}
#if (MVC_EXTENSION_ENABLE)
else if ( currSlice->svc_extension_flag == 0 && currSlice->NaluHeaderMVCExt.non_idr_flag == 0 )
{
currSlice->idr_pic_id = read_ue_v("SH: idr_pic_id", currStream, &p_Dec->UsedBits);
}
#endif
if (active_sps->pic_order_cnt_type == 0)
{
currSlice->pic_order_cnt_lsb = read_u_v(active_sps->log2_max_pic_order_cnt_lsb_minus4 + 4, "SH: pic_order_cnt_lsb", currStream, &p_Dec->UsedBits);
if( p_Vid->active_pps->bottom_field_pic_order_in_frame_present_flag == 1 && !currSlice->field_pic_flag )
currSlice->delta_pic_order_cnt_bottom = read_se_v("SH: delta_pic_order_cnt_bottom", currStream, &p_Dec->UsedBits);
else
currSlice->delta_pic_order_cnt_bottom = 0;
}
if( active_sps->pic_order_cnt_type == 1 )
{
if ( !active_sps->delta_pic_order_always_zero_flag )
{
currSlice->delta_pic_order_cnt[ 0 ] = read_se_v("SH: delta_pic_order_cnt[0]", currStream, &p_Dec->UsedBits);
if( p_Vid->active_pps->bottom_field_pic_order_in_frame_present_flag == 1 && !currSlice->field_pic_flag )
currSlice->delta_pic_order_cnt[ 1 ] = read_se_v("SH: delta_pic_order_cnt[1]", currStream, &p_Dec->UsedBits);
else
currSlice->delta_pic_order_cnt[ 1 ] = 0; // set to zero if not in stream
}
else
{
currSlice->delta_pic_order_cnt[ 0 ] = 0;
currSlice->delta_pic_order_cnt[ 1 ] = 0;
}
}
//! redundant_pic_cnt is missing here
if (p_Vid->active_pps->redundant_pic_cnt_present_flag)
{
currSlice->redundant_pic_cnt = read_ue_v ("SH: redundant_pic_cnt", currStream, &p_Dec->UsedBits);
}
if(currSlice->slice_type == B_SLICE)
{
currSlice->direct_spatial_mv_pred_flag = read_u_1 ("SH: direct_spatial_mv_pred_flag", currStream, &p_Dec->UsedBits);
}
currSlice->num_ref_idx_active[LIST_0] = p_Vid->active_pps->num_ref_idx_l0_default_active_minus1 + 1;
currSlice->num_ref_idx_active[LIST_1] = p_Vid->active_pps->num_ref_idx_l1_default_active_minus1 + 1;
if(currSlice->slice_type == P_SLICE || currSlice->slice_type == SP_SLICE || currSlice->slice_type == B_SLICE)
{
val = read_u_1 ("SH: num_ref_idx_override_flag", currStream, &p_Dec->UsedBits);
if (val)
{
currSlice->num_ref_idx_active[LIST_0] = 1 + read_ue_v ("SH: num_ref_idx_l0_active_minus1", currStream, &p_Dec->UsedBits);
if(currSlice->slice_type == B_SLICE)
{
currSlice->num_ref_idx_active[LIST_1] = 1 + read_ue_v ("SH: num_ref_idx_l1_active_minus1", currStream, &p_Dec->UsedBits);
}
}
}
if (currSlice->slice_type!=B_SLICE)
{
currSlice->num_ref_idx_active[LIST_1] = 0;
}
#if (MVC_EXTENSION_ENABLE)
if (currSlice->svc_extension_flag == 0 || currSlice->svc_extension_flag == 1)
ref_pic_list_mvc_modification(currSlice);
else
ref_pic_list_reordering(currSlice);
#else
ref_pic_list_reordering(currSlice);
#endif
currSlice->weighted_pred_flag = (unsigned short) ((currSlice->slice_type == P_SLICE || currSlice->slice_type == SP_SLICE)
? p_Vid->active_pps->weighted_pred_flag
: (currSlice->slice_type == B_SLICE && p_Vid->active_pps->weighted_bipred_idc == 1));
currSlice->weighted_bipred_idc = (unsigned short) (currSlice->slice_type == B_SLICE && p_Vid->active_pps->weighted_bipred_idc > 0);
if ((p_Vid->active_pps->weighted_pred_flag&&(currSlice->slice_type == P_SLICE|| currSlice->slice_type == SP_SLICE))||
(p_Vid->active_pps->weighted_bipred_idc==1 && (currSlice->slice_type == B_SLICE)))
{
pred_weight_table(currSlice);
}
if (currSlice->nal_reference_idc)
dec_ref_pic_marking(p_Vid, currStream, currSlice);
if (p_Vid->active_pps->entropy_coding_mode_flag && currSlice->slice_type != I_SLICE && currSlice->slice_type != SI_SLICE)
{
currSlice->model_number = read_ue_v("SH: cabac_init_idc", currStream, &p_Dec->UsedBits);
}
else
{
currSlice->model_number = 0;
}
currSlice->slice_qp_delta = val = read_se_v("SH: slice_qp_delta", currStream, &p_Dec->UsedBits);
//currSlice->qp = p_Vid->qp = 26 + p_Vid->active_pps->pic_init_qp_minus26 + val;
currSlice->qp = 26 + p_Vid->active_pps->pic_init_qp_minus26 + val;
if ((currSlice->qp < -p_Vid->bitdepth_luma_qp_scale) || (currSlice->qp > 51))
error ("slice_qp_delta makes slice_qp_y out of range", 500);
if(currSlice->slice_type == SP_SLICE || currSlice->slice_type == SI_SLICE)
{
if(currSlice->slice_type==SP_SLICE)
{
currSlice->sp_switch = read_u_1 ("SH: sp_for_switch_flag", currStream, &p_Dec->UsedBits);
}
currSlice->slice_qs_delta = val = read_se_v("SH: slice_qs_delta", currStream, &p_Dec->UsedBits);
currSlice->qs = 26 + p_Vid->active_pps->pic_init_qs_minus26 + val;
if ((currSlice->qs < 0) || (currSlice->qs > 51))
error ("slice_qs_delta makes slice_qs_y out of range", 500);
}
#if DPF_PARAM_DISP
printf("deblocking_filter_control_present_flag:%d\n", p_Vid->active_pps->deblocking_filter_control_present_flag);
#endif
if (p_Vid->active_pps->deblocking_filter_control_present_flag)
{
currSlice->DFDisableIdc = (short) read_ue_v ("SH: disable_deblocking_filter_idc", currStream, &p_Dec->UsedBits);
if (currSlice->DFDisableIdc!=1)
{
currSlice->DFAlphaC0Offset = (short) (2 * read_se_v("SH: slice_alpha_c0_offset_div2", currStream, &p_Dec->UsedBits));
currSlice->DFBetaOffset = (short) (2 * read_se_v("SH: slice_beta_offset_div2", currStream, &p_Dec->UsedBits));
}
else
{
currSlice->DFAlphaC0Offset = currSlice->DFBetaOffset = 0;
}
}
else
{
currSlice->DFDisableIdc = currSlice->DFAlphaC0Offset = currSlice->DFBetaOffset = 0;
}
#if DPF_PARAM_DISP
printf("Slice:%d, DFParameters:(%d,%d,%d)\n\n", currSlice->current_slice_nr, currSlice->DFDisableIdc, currSlice->DFAlphaC0Offset, currSlice->DFBetaOffset);
#endif
// The conformance point for intra profiles is without deblocking, but decoders are still recommended to filter the output.
// We allow in the decoder config to skip the loop filtering. This is achieved by modifying the parameters here.
if ( is_HI_intra_only_profile(active_sps->profile_idc, active_sps->constrained_set3_flag) && (p_Inp->intra_profile_deblocking == 0) )
{
currSlice->DFDisableIdc =1;
currSlice->DFAlphaC0Offset = currSlice->DFBetaOffset = 0;
}
if (p_Vid->active_pps->num_slice_groups_minus1>0 && p_Vid->active_pps->slice_group_map_type>=3 &&
p_Vid->active_pps->slice_group_map_type<=5)
{
len = (active_sps->pic_height_in_map_units_minus1+1)*(active_sps->pic_width_in_mbs_minus1+1)/
(p_Vid->active_pps->slice_group_change_rate_minus1+1);
if (((active_sps->pic_height_in_map_units_minus1+1)*(active_sps->pic_width_in_mbs_minus1+1))%
(p_Vid->active_pps->slice_group_change_rate_minus1+1))
len +=1;
len = CeilLog2(len+1);
currSlice->slice_group_change_cycle = read_u_v (len, "SH: slice_group_change_cycle", currStream, &p_Dec->UsedBits);
}
p_Vid->PicHeightInMbs = p_Vid->FrameHeightInMbs / ( 1 + currSlice->field_pic_flag );
p_Vid->PicSizeInMbs = p_Vid->PicWidthInMbs * p_Vid->PicHeightInMbs;
p_Vid->FrameSizeInMbs = p_Vid->PicWidthInMbs * p_Vid->FrameHeightInMbs;
return p_Dec->UsedBits;
}
/*!
************************************************************************
* \brief
* read the scond part of the header (without the pic_parameter_set_id
* \return
* Length of the second part of the Slice header in bits
************************************************************************
*/
int RestOfSliceHeader()
{
Slice *currSlice = img->currentSlice;
int dP_nr = assignSE2partition[currSlice->dp_mode][SE_HEADER];
DataPartition *partition = &(currSlice->partArr[dP_nr]);
Bitstream *currStream = partition->bitstream;
int val, len;
img->frame_num = u_v (active_sps->log2_max_frame_num_minus4 + 4, "SH: frame_num", currStream);
/* Tian Dong: frame_num gap processing, if found */
if (img->idr_flag)
{
img->pre_frame_num = img->frame_num;
// picture error concealment
img->last_ref_pic_poc = 0;
assert(img->frame_num == 0);
}
if (active_sps->frame_mbs_only_flag)
{
img->structure = FRAME;
img->field_pic_flag=0;
}
else
{
// field_pic_flag u(1)
img->field_pic_flag = u_1("SH: field_pic_flag", currStream);
if (img->field_pic_flag)
{
// bottom_field_flag u(1)
img->bottom_field_flag = u_1("SH: bottom_field_flag", currStream);
img->structure = img->bottom_field_flag ? BOTTOM_FIELD : TOP_FIELD;
}
else
{
img->structure = FRAME;
img->bottom_field_flag=0;
}
}
currSlice->structure = img->structure;
img->MbaffFrameFlag=(active_sps->mb_adaptive_frame_field_flag && (img->field_pic_flag==0));
if (img->structure == FRAME ) assert (img->field_pic_flag == 0);
if (img->structure == TOP_FIELD ) assert (img->field_pic_flag == 1 && img->bottom_field_flag == 0);
if (img->structure == BOTTOM_FIELD) assert (img->field_pic_flag == 1 && img->bottom_field_flag == 1);
if (img->idr_flag)
{
img->idr_pic_id = ue_v("SH: idr_pic_id", currStream);
}
if (active_sps->pic_order_cnt_type == 0)
{
img->pic_order_cnt_lsb = u_v(active_sps->log2_max_pic_order_cnt_lsb_minus4 + 4, "SH: pic_order_cnt_lsb", currStream);
if( active_pps->pic_order_present_flag == 1 && !img->field_pic_flag )
img->delta_pic_order_cnt_bottom = se_v("SH: delta_pic_order_cnt_bottom", currStream);
else
img->delta_pic_order_cnt_bottom = 0;
}
if( active_sps->pic_order_cnt_type == 1 && !active_sps->delta_pic_order_always_zero_flag )
{
img->delta_pic_order_cnt[ 0 ] = se_v("SH: delta_pic_order_cnt[0]", currStream);
if( active_pps->pic_order_present_flag == 1 && !img->field_pic_flag )
img->delta_pic_order_cnt[ 1 ] = se_v("SH: delta_pic_order_cnt[1]", currStream);
}else
{
if (active_sps->pic_order_cnt_type == 1)
{
img->delta_pic_order_cnt[ 0 ] = 0;
img->delta_pic_order_cnt[ 1 ] = 0;
}
}
//! redundant_pic_cnt is missing here
if (active_pps->redundant_pic_cnt_present_flag)
{
img->redundant_pic_cnt = ue_v ("SH: redundant_pic_cnt", currStream);
}
if(img->type==B_SLICE)
{
img->direct_spatial_mv_pred_flag = u_1 ("SH: direct_spatial_mv_pred_flag", currStream);
}
img->num_ref_idx_l0_active = active_pps->num_ref_idx_l0_active_minus1 + 1;
img->num_ref_idx_l1_active = active_pps->num_ref_idx_l1_active_minus1 + 1;
if(img->type==P_SLICE || img->type == SP_SLICE || img->type==B_SLICE)
{
val = u_1 ("SH: num_ref_idx_override_flag", currStream);
if (val)
{
img->num_ref_idx_l0_active = 1 + ue_v ("SH: num_ref_idx_l0_active_minus1", currStream);
if(img->type==B_SLICE)
{
img->num_ref_idx_l1_active = 1 + ue_v ("SH: num_ref_idx_l1_active_minus1", currStream);
}
}
}
if (img->type!=B_SLICE)
{
img->num_ref_idx_l1_active = 0;
}
ref_pic_list_reordering();
img->apply_weights = ((active_pps->weighted_pred_flag && (currSlice->picture_type == P_SLICE || currSlice->picture_type == SP_SLICE) )
|| ((active_pps->weighted_bipred_idc > 0 ) && (currSlice->picture_type == B_SLICE)));
if ((active_pps->weighted_pred_flag&&(img->type==P_SLICE|| img->type == SP_SLICE))||
(active_pps->weighted_bipred_idc==1 && (img->type==B_SLICE)))
{
pred_weight_table();
}
if (img->nal_reference_idc)
dec_ref_pic_marking(currStream);
if (active_pps->entropy_coding_mode_flag && img->type!=I_SLICE && img->type!=SI_SLICE)
{
img->model_number = ue_v("SH: cabac_init_idc", currStream);
}
else
{
img->model_number = 0;
}
val = se_v("SH: slice_qp_delta", currStream);
currSlice->qp = img->qp = 26 + active_pps->pic_init_qp_minus26 + val;
currSlice->slice_qp_delta = val;
if(img->type==SP_SLICE || img->type == SI_SLICE)
{
if(img->type==SP_SLICE)
{
img->sp_switch = u_1 ("SH: sp_for_switch_flag", currStream);
}
val = se_v("SH: slice_qs_delta", currStream);
img->qpsp = 26 + active_pps->pic_init_qs_minus26 + val;
}
if (active_pps->deblocking_filter_control_present_flag)
{
currSlice->LFDisableIdc = ue_v ("SH: disable_deblocking_filter_idc", currStream);
if (currSlice->LFDisableIdc!=1)
{
currSlice->LFAlphaC0Offset = 2 * se_v("SH: slice_alpha_c0_offset_div2", currStream);
currSlice->LFBetaOffset = 2 * se_v("SH: slice_beta_offset_div2", currStream);
}
else
{
currSlice->LFAlphaC0Offset = currSlice->LFBetaOffset = 0;
}
}
else
{
currSlice->LFDisableIdc = currSlice->LFAlphaC0Offset = currSlice->LFBetaOffset = 0;
}
if (active_pps->num_slice_groups_minus1>0 && active_pps->slice_group_map_type>=3 &&
active_pps->slice_group_map_type<=5)
{
len = (active_sps->pic_height_in_map_units_minus1+1)*(active_sps->pic_width_in_mbs_minus1+1)/
(active_pps->slice_group_change_rate_minus1+1);
if (((active_sps->pic_height_in_map_units_minus1+1)*(active_sps->pic_width_in_mbs_minus1+1))%
(active_pps->slice_group_change_rate_minus1+1))
len +=1;
len = CeilLog2(len+1);
img->slice_group_change_cycle = u_v (len, "SH: slice_group_change_cycle", currStream);
}
img->PicHeightInMbs = img->FrameHeightInMbs / ( 1 + img->field_pic_flag );
img->PicSizeInMbs = img->PicWidthInMbs * img->PicHeightInMbs;
img->FrameSizeInMbs = img->PicWidthInMbs * img->FrameHeightInMbs;
return UsedBits;
}