/******************************************************************************
*
* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
*
* 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.
*
******************************************************************************/
/**
*******************************************************************************
* @file
* ihevcd_parse_headers.c
*
* @brief
* Contains functions for parsing headers
*
* @author
* Harish
*
* @par List of Functions:
*
* @remarks
* None
*
*******************************************************************************
*/
/*****************************************************************************/
/* File Includes */
/*****************************************************************************/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "ihevc_typedefs.h"
#include "iv.h"
#include "ivd.h"
#include "ihevcd_cxa.h"
#include "ihevc_defs.h"
#include "ihevc_debug.h"
#include "ihevc_defs.h"
#include "ihevc_structs.h"
#include "ihevc_buf_mgr.h"
#include "ihevc_dpb_mgr.h"
#include "ihevc_macros.h"
#include "ihevc_platform_macros.h"
#include "ihevc_cabac_tables.h"
#include "ihevc_common_tables.h"
#include "ihevc_quant_tables.h"
#include "ihevcd_trace.h"
#include "ihevcd_defs.h"
#include "ihevcd_function_selector.h"
#include "ihevcd_structs.h"
#include "ihevcd_error.h"
#include "ihevcd_debug.h"
#include "ihevcd_nal.h"
#include "ihevcd_bitstream.h"
#include "ihevcd_parse_headers.h"
#include "ihevcd_ref_list.h"
#define COPY_DEFAULT_SCALING_LIST(pi2_scaling_mat) \
{ \
WORD32 scaling_mat_offset[]={0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040}; \
\
/* scaling matrix for 4x4 */ \
memcpy(pi2_scaling_mat, gi2_flat_scale_mat_32x32, 6*16*sizeof(WORD16)); \
/* scaling matrix for 8x8 */ \
memcpy(pi2_scaling_mat + scaling_mat_offset[6], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[7], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[8], gi2_intra_default_scale_mat_8x8, 64*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[9], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[10], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[11], gi2_inter_default_scale_mat_8x8, 64*sizeof(WORD16)); \
/* scaling matrix for 16x16 */ \
memcpy(pi2_scaling_mat + scaling_mat_offset[12], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[13], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[14], gi2_intra_default_scale_mat_16x16, 256*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[15], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[16], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[17], gi2_inter_default_scale_mat_16x16, 256*sizeof(WORD16)); \
/* scaling matrix for 32x32 */ \
memcpy(pi2_scaling_mat + scaling_mat_offset[18], gi2_intra_default_scale_mat_32x32, 1024*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[19], gi2_inter_default_scale_mat_32x32, 1024*sizeof(WORD16)); \
}
#define COPY_FLAT_SCALING_LIST(pi2_scaling_mat) \
{ \
WORD32 scaling_mat_offset[]={0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040}; \
\
/* scaling matrix for 4x4 */ \
memcpy(pi2_scaling_mat, gi2_flat_scale_mat_32x32, 6*16*sizeof(WORD16)); \
/* scaling matrix for 8x8 */ \
memcpy(pi2_scaling_mat + scaling_mat_offset[6], gi2_flat_scale_mat_32x32, 6*64*sizeof(WORD16)); \
/* scaling matrix for 16x16 */ \
memcpy(pi2_scaling_mat + scaling_mat_offset[12], gi2_flat_scale_mat_32x32, 3*256*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[15], gi2_flat_scale_mat_32x32, 3*256*sizeof(WORD16)); \
/* scaling matrix for 32x32 */ \
memcpy(pi2_scaling_mat + scaling_mat_offset[18], gi2_flat_scale_mat_32x32, 1024*sizeof(WORD16)); \
memcpy(pi2_scaling_mat + scaling_mat_offset[19], gi2_flat_scale_mat_32x32, 1024*sizeof(WORD16)); \
}
/* Function declarations */
/**
*******************************************************************************
*
* @brief
* Parses Prediction weight table syntax
*
* @par Description:
* Parse Prediction weight table syntax as per Section: 7.3.8.4
*
* @param[in] ps_bitstrm
* Pointer to bitstream context
*
* @param[in] ps_sps
* Current SPS
*
* @param[in] ps_pps
* Current PPS
*
* @param[in] ps_slice_hdr
* Current Slice header
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
WORD32 ihevcd_parse_pred_wt_ofst(bitstrm_t *ps_bitstrm,
sps_t *ps_sps,
pps_t *ps_pps,
slice_header_t *ps_slice_hdr)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 value;
WORD32 i;
pred_wt_ofst_t *ps_wt_ofst = &ps_slice_hdr->s_wt_ofst;
UNUSED(ps_pps);
UEV_PARSE("luma_log2_weight_denom", value, ps_bitstrm);
ps_wt_ofst->i1_luma_log2_weight_denom = value;
if(ps_sps->i1_chroma_format_idc != 0)
{
SEV_PARSE("delta_chroma_log2_weight_denom", value, ps_bitstrm);
ps_wt_ofst->i1_chroma_log2_weight_denom = ps_wt_ofst->i1_luma_log2_weight_denom + value;
}
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
{
BITS_PARSE("luma_weight_l0_flag[ i ]", value, ps_bitstrm, 1);
ps_wt_ofst->i1_luma_weight_l0_flag[i] = value;
}
if(ps_sps->i1_chroma_format_idc != 0)
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
{
BITS_PARSE("chroma_weight_l0_flag[ i ]", value, ps_bitstrm, 1);
ps_wt_ofst->i1_chroma_weight_l0_flag[i] = value;
}
}
else
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
{
ps_wt_ofst->i1_chroma_weight_l0_flag[i] = 0;
}
}
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
{
if(ps_wt_ofst->i1_luma_weight_l0_flag[i])
{
SEV_PARSE("delta_luma_weight_l0[ i ]", value, ps_bitstrm);
ps_wt_ofst->i2_luma_weight_l0[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom) + value;
SEV_PARSE("luma_offset_l0[ i ]", value, ps_bitstrm);
ps_wt_ofst->i2_luma_offset_l0[i] = value;
}
else
{
ps_wt_ofst->i2_luma_weight_l0[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom);
ps_wt_ofst->i2_luma_offset_l0[i] = 0;
}
if(ps_wt_ofst->i1_chroma_weight_l0_flag[i])
{
WORD32 ofst;
WORD32 shift = (1 << (BIT_DEPTH_CHROMA - 1));
SEV_PARSE("delta_chroma_weight_l0[ i ][ j ]", value, ps_bitstrm);
ps_wt_ofst->i2_chroma_weight_l0_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;
SEV_PARSE("delta_chroma_offset_l0[ i ][ j ]", value, ps_bitstrm);
ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l0_cb[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
ofst = value - ofst + shift;
ps_wt_ofst->i2_chroma_offset_l0_cb[i] = CLIP_S8(ofst);
SEV_PARSE("delta_chroma_weight_l0[ i ][ j ]", value, ps_bitstrm);
ps_wt_ofst->i2_chroma_weight_l0_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;
SEV_PARSE("delta_chroma_offset_l0[ i ][ j ]", value, ps_bitstrm);
ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l0_cr[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
ofst = value - ofst + shift;
ps_wt_ofst->i2_chroma_offset_l0_cr[i] = CLIP_S8(ofst);
}
else
{
ps_wt_ofst->i2_chroma_weight_l0_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
ps_wt_ofst->i2_chroma_weight_l0_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
ps_wt_ofst->i2_chroma_offset_l0_cb[i] = 0;
ps_wt_ofst->i2_chroma_offset_l0_cr[i] = 0;
}
}
if(BSLICE == ps_slice_hdr->i1_slice_type)
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
{
BITS_PARSE("luma_weight_l1_flag[ i ]", value, ps_bitstrm, 1);
ps_wt_ofst->i1_luma_weight_l1_flag[i] = value;
}
if(ps_sps->i1_chroma_format_idc != 0)
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
{
BITS_PARSE("chroma_weight_l1_flag[ i ]", value, ps_bitstrm, 1);
ps_wt_ofst->i1_chroma_weight_l1_flag[i] = value;
}
}
else
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
{
ps_wt_ofst->i1_chroma_weight_l1_flag[i] = 0;
}
}
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
{
if(ps_wt_ofst->i1_luma_weight_l1_flag[i])
{
SEV_PARSE("delta_luma_weight_l1[ i ]", value, ps_bitstrm);
ps_wt_ofst->i2_luma_weight_l1[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom) + value;
SEV_PARSE("luma_offset_l1[ i ]", value, ps_bitstrm);
ps_wt_ofst->i2_luma_offset_l1[i] = value;
}
else
{
ps_wt_ofst->i2_luma_weight_l1[i] = (1 << ps_wt_ofst->i1_luma_log2_weight_denom);
ps_wt_ofst->i2_luma_offset_l1[i] = 0;
}
if(ps_wt_ofst->i1_chroma_weight_l1_flag[i])
{
WORD32 ofst;
WORD32 shift = (1 << (BIT_DEPTH_CHROMA - 1));
SEV_PARSE("delta_chroma_weight_l1[ i ][ j ]", value, ps_bitstrm);
ps_wt_ofst->i2_chroma_weight_l1_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;;
SEV_PARSE("delta_chroma_offset_l1[ i ][ j ]", value, ps_bitstrm);
ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l1_cb[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
ofst = value - ofst + shift;
ps_wt_ofst->i2_chroma_offset_l1_cb[i] = CLIP_S8(ofst);;
SEV_PARSE("delta_chroma_weight_l1[ i ][ j ]", value, ps_bitstrm);
ps_wt_ofst->i2_chroma_weight_l1_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom) + value;
SEV_PARSE("delta_chroma_offset_l1[ i ][ j ]", value, ps_bitstrm);
ofst = ((shift * ps_wt_ofst->i2_chroma_weight_l1_cr[i]) >> ps_wt_ofst->i1_chroma_log2_weight_denom);
ofst = value - ofst + shift;
ps_wt_ofst->i2_chroma_offset_l1_cr[i] = CLIP_S8(ofst);;
}
else
{
ps_wt_ofst->i2_chroma_weight_l1_cb[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
ps_wt_ofst->i2_chroma_weight_l1_cr[i] = (1 << ps_wt_ofst->i1_chroma_log2_weight_denom);
ps_wt_ofst->i2_chroma_offset_l1_cb[i] = 0;
ps_wt_ofst->i2_chroma_offset_l1_cr[i] = 0;
}
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses short term reference picture set
*
* @par Description
* Parses short term reference picture set as per section 7.3.8.2.
* Can be called by either SPS or Slice header parsing modules.
*
* @param[in] ps_bitstrm
* Pointer to bitstream structure
*
* @param[out] ps_stref_picset_base
* Pointer to first short term ref pic set structure
*
* @param[in] num_short_term_ref_pic_sets
* Number of short term reference pic sets
*
* @param[in] idx
* Current short term ref pic set id
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_short_term_ref_pic_set(bitstrm_t *ps_bitstrm,
stref_picset_t *ps_stref_picset_base,
WORD32 num_short_term_ref_pic_sets,
WORD32 idx,
stref_picset_t *ps_stref_picset)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 value;
stref_picset_t *ps_stref_picset_ref;
WORD32 delta_idx, delta_rps;
WORD32 r_idx;
WORD32 i;
WORD32 j, k, temp;
if(idx > 0)
{
BITS_PARSE("inter_ref_pic_set_prediction_flag", value, ps_bitstrm, 1);
ps_stref_picset->i1_inter_ref_pic_set_prediction_flag = value;
}
else
ps_stref_picset->i1_inter_ref_pic_set_prediction_flag = 0;
if(ps_stref_picset->i1_inter_ref_pic_set_prediction_flag)
{
WORD32 delta_rps_sign;
WORD32 abs_delta_rps;
WORD32 num_neg_pics = 0;
WORD32 num_pos_pics = 0;
WORD32 num_pics = 0;
if(idx == num_short_term_ref_pic_sets)
{
UEV_PARSE("delta_idx_minus1", value, ps_bitstrm);
delta_idx = value + 1;
}
else
{
delta_idx = 1;
}
r_idx = idx - delta_idx;
r_idx = CLIP3(r_idx, 0, idx - 1);
ps_stref_picset_ref = ps_stref_picset_base + r_idx;
BITS_PARSE("delta_rps_sign", value, ps_bitstrm, 1);
delta_rps_sign = value;
UEV_PARSE("abs_delta_rps_minus1", value, ps_bitstrm);
abs_delta_rps = value + 1;
delta_rps = (1 - 2 * delta_rps_sign) * (abs_delta_rps);
for(i = 0; i <= ps_stref_picset_ref->i1_num_delta_pocs; i++)
{
WORD32 ref_idc;
/*****************************************************************/
/* ref_idc is parsed as below */
/* bits "1" ref_idc 1 */
/* bits "01" ref_idc 2 */
/* bits "00" ref_idc 0 */
/*****************************************************************/
BITS_PARSE("used_by_curr_pic_flag", value, ps_bitstrm, 1);
ref_idc = value;
ps_stref_picset->ai1_used[num_pics] = value;
/* If ref_idc is zero check for next bit */
if(0 == ref_idc)
{
BITS_PARSE("use_delta_flag", value, ps_bitstrm, 1);
ps_stref_picset->ai1_used[i] = value;
ref_idc = value << 1;
}
if((ref_idc == 1) || (ref_idc == 2))
{
WORD32 delta_poc;
delta_poc = delta_rps;
delta_poc +=
((i < ps_stref_picset_ref->i1_num_delta_pocs) ?
ps_stref_picset_ref->ai2_delta_poc[i] :
0);
ps_stref_picset->ai2_delta_poc[num_pics] = delta_poc;
if(delta_poc < 0)
{
num_neg_pics++;
}
else
{
num_pos_pics++;
}
num_pics++;
}
ps_stref_picset->ai1_ref_idc[i] = ref_idc;
}
num_neg_pics = CLIP3(num_neg_pics, 0, MAX_DPB_SIZE - 1);
num_pos_pics = CLIP3(num_pos_pics, 0, (MAX_DPB_SIZE - 1 - num_neg_pics));
num_pics = num_neg_pics + num_pos_pics;
ps_stref_picset->i1_num_ref_idc =
ps_stref_picset_ref->i1_num_delta_pocs + 1;
ps_stref_picset->i1_num_delta_pocs = num_pics;
ps_stref_picset->i1_num_pos_pics = num_pos_pics;
ps_stref_picset->i1_num_neg_pics = num_neg_pics;
for(j = 1; j < num_pics; j++)
{
WORD32 delta_poc = ps_stref_picset->ai2_delta_poc[j];
WORD8 i1_used = ps_stref_picset->ai1_used[j];
for(k = j - 1; k >= 0; k--)
{
temp = ps_stref_picset->ai2_delta_poc[k];
if(delta_poc < temp)
{
ps_stref_picset->ai2_delta_poc[k + 1] = temp;
ps_stref_picset->ai1_used[k + 1] = ps_stref_picset->ai1_used[k];
ps_stref_picset->ai2_delta_poc[k] = delta_poc;
ps_stref_picset->ai1_used[k] = i1_used;
}
}
}
// flip the negative values to largest first
for(j = 0, k = num_neg_pics - 1; j < num_neg_pics >> 1; j++, k--)
{
WORD32 delta_poc = ps_stref_picset->ai2_delta_poc[j];
WORD8 i1_used = ps_stref_picset->ai1_used[j];
ps_stref_picset->ai2_delta_poc[j] = ps_stref_picset->ai2_delta_poc[k];
ps_stref_picset->ai1_used[j] = ps_stref_picset->ai1_used[k];
ps_stref_picset->ai2_delta_poc[k] = delta_poc;
ps_stref_picset->ai1_used[k] = i1_used;
}
}
else
{
WORD32 prev_poc = 0;
WORD32 poc;
UEV_PARSE("num_negative_pics", value, ps_bitstrm);
ps_stref_picset->i1_num_neg_pics = value;
ps_stref_picset->i1_num_neg_pics = CLIP3(ps_stref_picset->i1_num_neg_pics,
0,
MAX_DPB_SIZE - 1);
UEV_PARSE("num_positive_pics", value, ps_bitstrm);
ps_stref_picset->i1_num_pos_pics = value;
ps_stref_picset->i1_num_pos_pics = CLIP3(ps_stref_picset->i1_num_pos_pics,
0,
(MAX_DPB_SIZE - 1 - ps_stref_picset->i1_num_neg_pics));
ps_stref_picset->i1_num_delta_pocs =
ps_stref_picset->i1_num_neg_pics +
ps_stref_picset->i1_num_pos_pics;
for(i = 0; i < ps_stref_picset->i1_num_neg_pics; i++)
{
UEV_PARSE("delta_poc_s0_minus1", value, ps_bitstrm);
poc = prev_poc - (value + 1);
prev_poc = poc;
ps_stref_picset->ai2_delta_poc[i] = poc;
BITS_PARSE("used_by_curr_pic_s0_flag", value, ps_bitstrm, 1);
ps_stref_picset->ai1_used[i] = value;
}
prev_poc = 0;
for(i = ps_stref_picset->i1_num_neg_pics;
i < ps_stref_picset->i1_num_delta_pocs;
i++)
{
UEV_PARSE("delta_poc_s1_minus1", value, ps_bitstrm);
poc = prev_poc + (value + 1);
prev_poc = poc;
ps_stref_picset->ai2_delta_poc[i] = poc;
BITS_PARSE("used_by_curr_pic_s1_flag", value, ps_bitstrm, 1);
ps_stref_picset->ai1_used[i] = value;
}
}
return ret;
}
static WORD32 ihevcd_parse_sub_layer_hrd_parameters(bitstrm_t *ps_bitstrm,
sub_lyr_hrd_params_t *ps_sub_layer_hrd_params,
WORD32 cpb_cnt,
WORD32 sub_pic_cpb_params_present_flag)
{
WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 i;
for(i = 0; i <= cpb_cnt; i++)
{
UEV_PARSE("bit_rate_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_bit_rate_value_minus1[i], ps_bitstrm);
UEV_PARSE("cpb_size_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_cpb_size_value_minus1[i], ps_bitstrm);
if(sub_pic_cpb_params_present_flag)
{
UEV_PARSE("cpb_size_du_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_cpb_size_du_value_minus1[i], ps_bitstrm);
UEV_PARSE("bit_rate_du_value_minus1[ i ]", ps_sub_layer_hrd_params->au4_bit_rate_du_value_minus1[i], ps_bitstrm);
}
BITS_PARSE("cbr_flag[ i ]", ps_sub_layer_hrd_params->au1_cbr_flag[i], ps_bitstrm, 1);
}
return ret;
}
static WORD32 ihevcd_parse_hrd_parameters(bitstrm_t *ps_bitstrm,
hrd_params_t *ps_hrd,
WORD32 common_info_present_flag,
WORD32 max_num_sub_layers_minus1)
{
WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 i;
ps_hrd->u1_nal_hrd_parameters_present_flag = 0;
ps_hrd->u1_vcl_hrd_parameters_present_flag = 0;
ps_hrd->u1_sub_pic_cpb_params_present_flag = 0;
ps_hrd->u1_tick_divisor_minus2 = 0;
ps_hrd->u1_du_cpb_removal_delay_increment_length_minus1 = 0;
ps_hrd->u1_sub_pic_cpb_params_in_pic_timing_sei_flag = 0;
ps_hrd->u1_dpb_output_delay_du_length_minus1 = 0;
ps_hrd->u4_bit_rate_scale = 0;
ps_hrd->u4_cpb_size_scale = 0;
ps_hrd->u4_cpb_size_du_scale = 0;
ps_hrd->u1_initial_cpb_removal_delay_length_minus1 = 23;
ps_hrd->u1_au_cpb_removal_delay_length_minus1 = 23;
ps_hrd->u1_dpb_output_delay_length_minus1 = 23;
if(common_info_present_flag)
{
BITS_PARSE("nal_hrd_parameters_present_flag", ps_hrd->u1_nal_hrd_parameters_present_flag, ps_bitstrm, 1);
BITS_PARSE("vcl_hrd_parameters_present_flag", ps_hrd->u1_vcl_hrd_parameters_present_flag, ps_bitstrm, 1);
if(ps_hrd->u1_nal_hrd_parameters_present_flag || ps_hrd->u1_vcl_hrd_parameters_present_flag)
{
BITS_PARSE("sub_pic_cpb_params_present_flag", ps_hrd->u1_sub_pic_cpb_params_present_flag, ps_bitstrm, 1);
if(ps_hrd->u1_sub_pic_cpb_params_present_flag)
{
BITS_PARSE("tick_divisor_minus2", ps_hrd->u1_tick_divisor_minus2, ps_bitstrm, 8);
BITS_PARSE("du_cpb_removal_delay_increment_length_minus1", ps_hrd->u1_du_cpb_removal_delay_increment_length_minus1, ps_bitstrm, 5);
BITS_PARSE("sub_pic_cpb_params_in_pic_timing_sei_flag", ps_hrd->u1_sub_pic_cpb_params_in_pic_timing_sei_flag, ps_bitstrm, 1);
BITS_PARSE("dpb_output_delay_du_length_minus1", ps_hrd->u1_dpb_output_delay_du_length_minus1, ps_bitstrm, 5);
}
BITS_PARSE("bit_rate_scale", ps_hrd->u4_bit_rate_scale, ps_bitstrm, 4);
BITS_PARSE("cpb_size_scale", ps_hrd->u4_cpb_size_scale, ps_bitstrm, 4);
if(ps_hrd->u1_sub_pic_cpb_params_present_flag)
BITS_PARSE("cpb_size_du_scale", ps_hrd->u4_cpb_size_du_scale, ps_bitstrm, 4);
BITS_PARSE("initial_cpb_removal_delay_length_minus1", ps_hrd->u1_initial_cpb_removal_delay_length_minus1, ps_bitstrm, 5);
BITS_PARSE("au_cpb_removal_delay_length_minus1", ps_hrd->u1_au_cpb_removal_delay_length_minus1, ps_bitstrm, 5);
BITS_PARSE("dpb_output_delay_length_minus1", ps_hrd->u1_dpb_output_delay_length_minus1, ps_bitstrm, 5);
}
}
for(i = 0; i <= max_num_sub_layers_minus1; i++)
{
BITS_PARSE("fixed_pic_rate_general_flag[ i ]", ps_hrd->au1_fixed_pic_rate_general_flag[i], ps_bitstrm, 1);
ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i] = 1;
ps_hrd->au1_elemental_duration_in_tc_minus1[i] = 0;
ps_hrd->au1_low_delay_hrd_flag[i] = 0;
ps_hrd->au1_cpb_cnt_minus1[i] = 0;
if(!ps_hrd->au1_fixed_pic_rate_general_flag[i])
BITS_PARSE("fixed_pic_rate_within_cvs_flag[ i ]", ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i], ps_bitstrm, 1);
if(ps_hrd->au1_fixed_pic_rate_within_cvs_flag[i])
{
UEV_PARSE("elemental_duration_in_tc_minus1[ i ]", ps_hrd->au1_elemental_duration_in_tc_minus1[i], ps_bitstrm);
}
else
{
BITS_PARSE("low_delay_hrd_flag[ i ]", ps_hrd->au1_low_delay_hrd_flag[i], ps_bitstrm, 1);
}
if(!ps_hrd->au1_low_delay_hrd_flag[i])
UEV_PARSE("cpb_cnt_minus1[ i ]", ps_hrd->au1_cpb_cnt_minus1[i], ps_bitstrm);
if(ps_hrd->u1_nal_hrd_parameters_present_flag)
ihevcd_parse_sub_layer_hrd_parameters(ps_bitstrm,
&ps_hrd->as_sub_layer_hrd_params[i],
ps_hrd->au1_cpb_cnt_minus1[i],
ps_hrd->u1_sub_pic_cpb_params_present_flag);
if(ps_hrd->u1_vcl_hrd_parameters_present_flag)
ihevcd_parse_sub_layer_hrd_parameters(ps_bitstrm,
&ps_hrd->as_sub_layer_hrd_params[i],
ps_hrd->au1_cpb_cnt_minus1[i],
ps_hrd->u1_sub_pic_cpb_params_present_flag);
}
return ret;
}
static WORD32 ihevcd_parse_vui_parameters(bitstrm_t *ps_bitstrm,
vui_t *ps_vui,
WORD32 sps_max_sub_layers_minus1)
{
WORD32 ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
BITS_PARSE("aspect_ratio_info_present_flag", ps_vui->u1_aspect_ratio_info_present_flag, ps_bitstrm, 1);
ps_vui->u1_aspect_ratio_idc = SAR_UNUSED;
ps_vui->u2_sar_width = 0;
ps_vui->u2_sar_height = 0;
if(ps_vui->u1_aspect_ratio_info_present_flag)
{
BITS_PARSE("aspect_ratio_idc", ps_vui->u1_aspect_ratio_idc, ps_bitstrm, 8);
if(ps_vui->u1_aspect_ratio_idc == EXTENDED_SAR)
{
BITS_PARSE("sar_width", ps_vui->u2_sar_width, ps_bitstrm, 16);
BITS_PARSE("sar_height", ps_vui->u2_sar_height, ps_bitstrm, 16);
}
}
BITS_PARSE("overscan_info_present_flag", ps_vui->u1_overscan_info_present_flag, ps_bitstrm, 1);
ps_vui->u1_overscan_appropriate_flag = 0;
if(ps_vui->u1_overscan_info_present_flag)
BITS_PARSE("overscan_appropriate_flag", ps_vui->u1_overscan_appropriate_flag, ps_bitstrm, 1);
BITS_PARSE("video_signal_type_present_flag", ps_vui->u1_video_signal_type_present_flag, ps_bitstrm, 1);
ps_vui->u1_video_format = VID_FMT_UNSPECIFIED;
ps_vui->u1_video_full_range_flag = 0;
ps_vui->u1_colour_description_present_flag = 0;
if(ps_vui->u1_video_signal_type_present_flag)
{
BITS_PARSE("video_format", ps_vui->u1_video_format, ps_bitstrm, 3);
BITS_PARSE("video_full_range_flag", ps_vui->u1_video_full_range_flag, ps_bitstrm, 1);
BITS_PARSE("colour_description_present_flag", ps_vui->u1_colour_description_present_flag, ps_bitstrm, 1);
ps_vui->u1_colour_primaries = 2;
ps_vui->u1_transfer_characteristics = 2;
if(ps_vui->u1_colour_description_present_flag)
{
BITS_PARSE("colour_primaries", ps_vui->u1_colour_primaries, ps_bitstrm, 8);
BITS_PARSE("transfer_characteristics", ps_vui->u1_transfer_characteristics, ps_bitstrm, 8);
BITS_PARSE("matrix_coeffs", ps_vui->u1_matrix_coefficients, ps_bitstrm, 8);
}
}
BITS_PARSE("chroma_loc_info_present_flag", ps_vui->u1_chroma_loc_info_present_flag, ps_bitstrm, 1);
ps_vui->u1_chroma_sample_loc_type_top_field = 0;
ps_vui->u1_chroma_sample_loc_type_bottom_field = 0;
if(ps_vui->u1_chroma_loc_info_present_flag)
{
UEV_PARSE("chroma_sample_loc_type_top_field", ps_vui->u1_chroma_sample_loc_type_top_field, ps_bitstrm);
UEV_PARSE("chroma_sample_loc_type_bottom_field", ps_vui->u1_chroma_sample_loc_type_bottom_field, ps_bitstrm);
}
BITS_PARSE("neutral_chroma_indication_flag", ps_vui->u1_neutral_chroma_indication_flag, ps_bitstrm, 1);
BITS_PARSE("field_seq_flag", ps_vui->u1_field_seq_flag, ps_bitstrm, 1);
BITS_PARSE("frame_field_info_present_flag", ps_vui->u1_frame_field_info_present_flag, ps_bitstrm, 1);
BITS_PARSE("default_display_window_flag", ps_vui->u1_default_display_window_flag, ps_bitstrm, 1);
ps_vui->u4_def_disp_win_left_offset = 0;
ps_vui->u4_def_disp_win_right_offset = 0;
ps_vui->u4_def_disp_win_top_offset = 0;
ps_vui->u4_def_disp_win_bottom_offset = 0;
if(ps_vui->u1_default_display_window_flag)
{
UEV_PARSE("def_disp_win_left_offset", ps_vui->u4_def_disp_win_left_offset, ps_bitstrm);
UEV_PARSE("def_disp_win_right_offset", ps_vui->u4_def_disp_win_right_offset, ps_bitstrm);
UEV_PARSE("def_disp_win_top_offset", ps_vui->u4_def_disp_win_top_offset, ps_bitstrm);
UEV_PARSE("def_disp_win_bottom_offset", ps_vui->u4_def_disp_win_bottom_offset, ps_bitstrm);
}
BITS_PARSE("vui_timing_info_present_flag", ps_vui->u1_vui_timing_info_present_flag, ps_bitstrm, 1);
if(ps_vui->u1_vui_timing_info_present_flag)
{
BITS_PARSE("vui_num_units_in_tick", ps_vui->u4_vui_num_units_in_tick, ps_bitstrm, 32);
BITS_PARSE("vui_time_scale", ps_vui->u4_vui_time_scale, ps_bitstrm, 32);
BITS_PARSE("vui_poc_proportional_to_timing_flag", ps_vui->u1_poc_proportional_to_timing_flag, ps_bitstrm, 1);
if(ps_vui->u1_poc_proportional_to_timing_flag)
UEV_PARSE("vui_num_ticks_poc_diff_one_minus1", ps_vui->u1_num_ticks_poc_diff_one_minus1, ps_bitstrm);
BITS_PARSE("vui_hrd_parameters_present_flag", ps_vui->u1_vui_hrd_parameters_present_flag, ps_bitstrm, 1);
if(ps_vui->u1_vui_hrd_parameters_present_flag)
ihevcd_parse_hrd_parameters(ps_bitstrm, &ps_vui->s_vui_hrd_parameters, 1, sps_max_sub_layers_minus1);
}
BITS_PARSE("bitstream_restriction_flag", ps_vui->u1_bitstream_restriction_flag, ps_bitstrm, 1);
ps_vui->u1_tiles_fixed_structure_flag = 0;
ps_vui->u1_motion_vectors_over_pic_boundaries_flag = 1;
ps_vui->u1_restricted_ref_pic_lists_flag = 0;
ps_vui->u4_min_spatial_segmentation_idc = 0;
ps_vui->u1_max_bytes_per_pic_denom = 2;
ps_vui->u1_max_bits_per_mincu_denom = 1;
ps_vui->u1_log2_max_mv_length_horizontal = 15;
ps_vui->u1_log2_max_mv_length_vertical = 15;
if(ps_vui->u1_bitstream_restriction_flag)
{
BITS_PARSE("tiles_fixed_structure_flag", ps_vui->u1_tiles_fixed_structure_flag, ps_bitstrm, 1);
BITS_PARSE("motion_vectors_over_pic_boundaries_flag", ps_vui->u1_motion_vectors_over_pic_boundaries_flag, ps_bitstrm, 1);
BITS_PARSE("restricted_ref_pic_lists_flag", ps_vui->u1_restricted_ref_pic_lists_flag, ps_bitstrm, 1);
UEV_PARSE("min_spatial_segmentation_idc", ps_vui->u4_min_spatial_segmentation_idc, ps_bitstrm);
UEV_PARSE("max_bytes_per_pic_denom", ps_vui->u1_max_bytes_per_pic_denom, ps_bitstrm);
UEV_PARSE("max_bits_per_min_cu_denom", ps_vui->u1_max_bits_per_mincu_denom, ps_bitstrm);
UEV_PARSE("log2_max_mv_length_horizontal", ps_vui->u1_log2_max_mv_length_horizontal, ps_bitstrm);
UEV_PARSE("log2_max_mv_length_vertical", ps_vui->u1_log2_max_mv_length_vertical, ps_bitstrm);
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses profile tier and level info for either general layer of sub_layer
*
* @par Description
* Parses profile tier and level info for either general layer of sub_layer
* as per section 7.3.3
*
* Since the same function is called for parsing general_profile and
* sub_layer_profile etc, variables do not specify whether the syntax is
* for general or sub_layer. Similarly trace functions also do not differentiate
*
* @param[in] ps_bitstrm
* Pointer to bitstream structure
*
* @param[out] ps_ptl
* Pointer to profile, tier level structure
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*******************************************************************************
*/
static IHEVCD_ERROR_T ihevcd_parse_profile_tier_level_layer(bitstrm_t *ps_bitstrm,
profile_tier_lvl_t *ps_ptl)
{
WORD32 value;
WORD32 i;
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
BITS_PARSE("XXX_profile_space[]", value, ps_bitstrm, 2);
ps_ptl->i1_profile_space = value;
BITS_PARSE("XXX_tier_flag[]", value, ps_bitstrm, 1);
ps_ptl->i1_tier_flag = value;
BITS_PARSE("XXX_profile_idc[]", value, ps_bitstrm, 5);
ps_ptl->i1_profile_idc = value;
for(i = 0; i < MAX_PROFILE_COMPATBLTY; i++)
{
BITS_PARSE("XXX_profile_compatibility_flag[][j]", value, ps_bitstrm, 1);
ps_ptl->ai1_profile_compatibility_flag[i] = value;
}
BITS_PARSE("general_progressive_source_flag", value, ps_bitstrm, 1);
ps_ptl->i1_general_progressive_source_flag = value;
BITS_PARSE("general_interlaced_source_flag", value, ps_bitstrm, 1);
ps_ptl->i1_general_progressive_source_flag = value;
BITS_PARSE("general_non_packed_constraint_flag", value, ps_bitstrm, 1);
ps_ptl->i1_general_progressive_source_flag = value;
BITS_PARSE("general_frame_only_constraint_flag", value, ps_bitstrm, 1);
ps_ptl->i1_general_progressive_source_flag = value;
BITS_PARSE("XXX_reserved_zero_44bits[0..15]", value, ps_bitstrm, 16);
BITS_PARSE("XXX_reserved_zero_44bits[16..31]", value, ps_bitstrm, 16);
BITS_PARSE("XXX_reserved_zero_44bits[32..43]", value, ps_bitstrm, 12);
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses profile tier and level info
*
* @par Description
* Parses profile tier and level info as per section 7.3.3
* Called during VPS and SPS parsing
* calls ihevcd_parse_profile_tier_level() for general layer and each sub_layers
*
* @param[in] ps_bitstrm
* Pointer to bitstream structure
*
* @param[out] ps_ptl
* Pointer to structure that contains profile, tier level for each layers
*
* @param[in] profile_present
* Flag to indicate if profile data is present
*
* @param[in] max_num_sub_layers
* Number of sub layers present
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*******************************************************************************
*/
static IHEVCD_ERROR_T ihevcd_profile_tier_level(bitstrm_t *ps_bitstrm,
profile_tier_lvl_info_t *ps_ptl,
WORD32 profile_present,
WORD32 max_num_sub_layers)
{
WORD32 value;
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 i;
if(profile_present)
{
ret = ihevcd_parse_profile_tier_level_layer(ps_bitstrm, &ps_ptl->s_ptl_gen);
}
BITS_PARSE("general_level_idc", value, ps_bitstrm, 8);
ps_ptl->s_ptl_gen.u1_level_idc = value;
for(i = 0; i < max_num_sub_layers; i++)
{
BITS_PARSE("sub_layer_profile_present_flag[i]", value, ps_bitstrm, 1);
ps_ptl->ai1_sub_layer_profile_present_flag[i] = value;
BITS_PARSE("sub_layer_level_present_flag[i]", value, ps_bitstrm, 1);
ps_ptl->ai1_sub_layer_level_present_flag[i] = value;
}
if(max_num_sub_layers > 0)
{
for(i = max_num_sub_layers; i < 8; i++)
{
BITS_PARSE("reserved_zero_2bits", value, ps_bitstrm, 2);
}
}
for(i = 0; i < max_num_sub_layers; i++)
{
if(ps_ptl->ai1_sub_layer_profile_present_flag[i])
{
ret = ihevcd_parse_profile_tier_level_layer(ps_bitstrm,
&ps_ptl->as_ptl_sub[i]);
}
if(ps_ptl->ai1_sub_layer_level_present_flag[i])
{
BITS_PARSE("sub_layer_level_idc[i]", value, ps_bitstrm, 8);
ps_ptl->as_ptl_sub[i].u1_level_idc = value;
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Scaling List Data syntax
*
* @par Description:
* Parses Scaling List Data syntax as per Section: 7.3.6
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_scaling_list_data(codec_t *ps_codec, WORD16 *pi2_scaling_mat)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 size_id;
WORD32 matrix_id;
WORD32 value, dc_value = 0;
WORD32 next_coef;
WORD32 coef_num;
WORD32 i, j, offset;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
WORD16 *pi2_scaling_mat_offset;
WORD32 scaling_mat_offset[] = { 0, 16, 32, 48, 64, 80, 96, 160, 224, 288, 352, 416, 480, 736, 992, 1248, 1504, 1760, 2016, 3040 };
UWORD8 *scan_table;
for(size_id = 0; size_id < 4; size_id++)
{
for(matrix_id = 0; matrix_id < ((size_id == 3) ? 2 : 6); matrix_id++)
{
WORD32 scaling_list_pred_mode_flag;
WORD32 scaling_list_delta_coef;
BITS_PARSE("scaling_list_pred_mode_flag", scaling_list_pred_mode_flag, ps_bitstrm, 1);
offset = size_id * 6 + matrix_id;
pi2_scaling_mat_offset = pi2_scaling_mat + scaling_mat_offset[offset];
if(!scaling_list_pred_mode_flag)
{
WORD32 num_elements;
UEV_PARSE("scaling_list_pred_matrix_id_delta", value,
ps_bitstrm);
value = CLIP3(value, 0, matrix_id);
num_elements = (1 << (4 + (size_id << 1)));
if(0 != value)
memcpy(pi2_scaling_mat_offset, pi2_scaling_mat_offset - value * num_elements, num_elements * sizeof(WORD16));
}
else
{
next_coef = 8;
coef_num = MIN(64, (1 << (4 + (size_id << 1))));
if(size_id > 1)
{
SEV_PARSE("scaling_list_dc_coef_minus8", value,
ps_bitstrm);
next_coef = value + 8;
dc_value = next_coef;
}
if(size_id < 2)
{
scan_table = (UWORD8 *)gapv_ihevc_invscan[size_id + 1];
for(i = 0; i < coef_num; i++)
{
SEV_PARSE("scaling_list_delta_coef",
scaling_list_delta_coef, ps_bitstrm);
next_coef = (next_coef + scaling_list_delta_coef + 256)
% 256;
pi2_scaling_mat_offset[scan_table[i]] = next_coef;
}
}
else if(size_id == 2)
{
scan_table = (UWORD8 *)gapv_ihevc_invscan[2];
for(i = 0; i < coef_num; i++)
{
SEV_PARSE("scaling_list_delta_coef",
scaling_list_delta_coef, ps_bitstrm);
next_coef = (next_coef + scaling_list_delta_coef + 256)
% 256;
offset = scan_table[i];
offset = (offset >> 3) * 16 * 2 + (offset & 0x7) * 2;
pi2_scaling_mat_offset[offset] = next_coef;
pi2_scaling_mat_offset[offset + 1] = next_coef;
pi2_scaling_mat_offset[offset + 16] = next_coef;
pi2_scaling_mat_offset[offset + 16 + 1] = next_coef;
}
pi2_scaling_mat_offset[0] = dc_value;
}
else
{
scan_table = (UWORD8 *)gapv_ihevc_invscan[2];
for(i = 0; i < coef_num; i++)
{
SEV_PARSE("scaling_list_delta_coef",
scaling_list_delta_coef, ps_bitstrm);
next_coef = (next_coef + scaling_list_delta_coef + 256)
% 256;
offset = scan_table[i];
offset = (offset >> 3) * 32 * 4 + (offset & 0x7) * 4;
for(j = 0; j < 4; j++)
{
pi2_scaling_mat_offset[offset + j * 32] = next_coef;
pi2_scaling_mat_offset[offset + 1 + j * 32] = next_coef;
pi2_scaling_mat_offset[offset + 2 + j * 32] = next_coef;
pi2_scaling_mat_offset[offset + 3 + j * 32] = next_coef;
}
pi2_scaling_mat_offset[0] = dc_value;
}
}
}
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses VPS (Video Parameter Set)
*
* @par Description:
* Parse Video Parameter Set as per Section 7.3.2.1
* update vps structure corresponding to vps ID
* Till parsing VPS id, the elements are stored in local variables and are copied
* later
*
* @param[in] ps_codec
* Pointer to codec context.
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_vps(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 i;
WORD32 value;
WORD32 vps_id;
vps_t *ps_vps;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
BITS_PARSE("vps_video_parameter_set_id", value, ps_bitstrm, 4);
vps_id = value;
if(vps_id >= MAX_VPS_CNT)
{
ps_codec->s_parse.i4_error_code = IHEVCD_UNSUPPORTED_VPS_ID;
return IHEVCD_UNSUPPORTED_VPS_ID;
}
ps_vps = (ps_codec->s_parse.ps_vps_base + vps_id);
ps_vps->i1_vps_id = vps_id;
BITS_PARSE("vps_reserved_three_2bits", value, ps_bitstrm, 2);
ASSERT(value == 3);
BITS_PARSE("vps_max_layers_minus1", value, ps_bitstrm, 6);
//ps_vps->i1_vps_max_layers = value + 1;
BITS_PARSE("vps_max_sub_layers_minus1", value, ps_bitstrm, 3);
ps_vps->i1_vps_max_sub_layers = value + 1;
ASSERT(ps_vps->i1_vps_max_sub_layers < VPS_MAX_SUB_LAYERS);
BITS_PARSE("vps_temporal_id_nesting_flag", value, ps_bitstrm, 1);
ps_vps->i1_vps_temporal_id_nesting_flag = value;
BITS_PARSE("vps_reserved_ffff_16bits", value, ps_bitstrm, 16);
ASSERT(value == 0xFFFF);
// profile_and_level( 1, vps_max_sub_layers_minus1 )
ret = ihevcd_profile_tier_level(ps_bitstrm, &(ps_vps->s_ptl),
1, (ps_vps->i1_vps_max_sub_layers - 1));
BITS_PARSE("vps_sub_layer_ordering_info_present_flag", value, ps_bitstrm, 1);
ps_vps->i1_sub_layer_ordering_info_present_flag = value;
i = (ps_vps->i1_sub_layer_ordering_info_present_flag ?
0 : (ps_vps->i1_vps_max_sub_layers - 1));
for(; i < ps_vps->i1_vps_max_sub_layers; i++)
{
UEV_PARSE("vps_max_dec_pic_buffering[i]", value, ps_bitstrm);
ps_vps->ai1_vps_max_dec_pic_buffering[i] = value;
/* vps_num_reorder_pics (no max) used in print in order to match with HM */
UEV_PARSE("vps_num_reorder_pics[i]", value, ps_bitstrm);
ps_vps->ai1_vps_max_num_reorder_pics[i] = value;
UEV_PARSE("vps_max_latency_increase[i]", value, ps_bitstrm);
ps_vps->ai1_vps_max_latency_increase[i] = value;
}
BITS_PARSE("vps_max_layer_id", value, ps_bitstrm, 6);
//ps_vps->i1_vps_max_layer_id = value;
UEV_PARSE("vps_num_layer_sets_minus1", value, ps_bitstrm);
//ps_vps->i1_vps_num_layer_sets = value + 1;
BITS_PARSE("vps_timing_info_present_flag", value, ps_bitstrm, 1);
//ps_vps->i1_vps_timing_info_present_flag = value;
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses SPS (Sequence Parameter Set)
* sequence_parameter_set_rbsp()
*
* @par Description:
* Parse Sequence Parameter Set as per section Section: 7.3.2.2
* The sps is written to a temporary buffer and copied later to the
* appropriate location
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_sps(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 value;
WORD32 i;
WORD32 vps_id;
WORD32 sps_max_sub_layers;
WORD32 sps_id;
WORD32 sps_temporal_id_nesting_flag;
sps_t *ps_sps;
profile_tier_lvl_info_t s_ptl;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
BITS_PARSE("video_parameter_set_id", value, ps_bitstrm, 4);
vps_id = value;
vps_id = CLIP3(vps_id, 0, MAX_VPS_CNT - 1);
BITS_PARSE("sps_max_sub_layers_minus1", value, ps_bitstrm, 3);
sps_max_sub_layers = value + 1;
sps_max_sub_layers = CLIP3(sps_max_sub_layers, 1, 7);
BITS_PARSE("sps_temporal_id_nesting_flag", value, ps_bitstrm, 1);
sps_temporal_id_nesting_flag = value;
//profile_and_level( 1, sps_max_sub_layers_minus1 )
ret = ihevcd_profile_tier_level(ps_bitstrm, &(s_ptl), 1,
(sps_max_sub_layers - 1));
UEV_PARSE("seq_parameter_set_id", value, ps_bitstrm);
sps_id = value;
if((sps_id >= MAX_SPS_CNT) || (sps_id < 0))
{
if(ps_codec->i4_sps_done)
return IHEVCD_UNSUPPORTED_SPS_ID;
else
sps_id = 0;
}
ps_sps = (ps_codec->s_parse.ps_sps_base + MAX_SPS_CNT - 1);
ps_sps->i1_sps_id = sps_id;
ps_sps->i1_vps_id = vps_id;
ps_sps->i1_sps_max_sub_layers = sps_max_sub_layers;
ps_sps->i1_sps_temporal_id_nesting_flag = sps_temporal_id_nesting_flag;
/* This is used only during initialization to get reorder count etc */
ps_codec->i4_sps_id = sps_id;
memcpy(&ps_sps->s_ptl, &s_ptl, sizeof(profile_tier_lvl_info_t));
UEV_PARSE("chroma_format_idc", value, ps_bitstrm);
ps_sps->i1_chroma_format_idc = value;
if(ps_sps->i1_chroma_format_idc != CHROMA_FMT_IDC_YUV420)
{
ps_codec->s_parse.i4_error_code = IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC;
return (IHEVCD_ERROR_T)IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC;
}
if(CHROMA_FMT_IDC_YUV444_PLANES == ps_sps->i1_chroma_format_idc)
{
BITS_PARSE("separate_colour_plane_flag", value, ps_bitstrm, 1);
ps_sps->i1_separate_colour_plane_flag = value;
}
else
{
ps_sps->i1_separate_colour_plane_flag = 0;
}
UEV_PARSE("pic_width_in_luma_samples", value, ps_bitstrm);
ps_sps->i2_pic_width_in_luma_samples = value;
UEV_PARSE("pic_height_in_luma_samples", value, ps_bitstrm);
ps_sps->i2_pic_height_in_luma_samples = value;
if((0 >= ps_sps->i2_pic_width_in_luma_samples) || (0 >= ps_sps->i2_pic_height_in_luma_samples))
return IHEVCD_INVALID_PARAMETER;
/* i2_pic_width_in_luma_samples and i2_pic_height_in_luma_samples
should be multiples of min_cb_size. Here these are aligned to 8,
i.e. smallest CB size */
ps_sps->i2_pic_width_in_luma_samples = ALIGN8(ps_sps->i2_pic_width_in_luma_samples);
ps_sps->i2_pic_height_in_luma_samples = ALIGN8(ps_sps->i2_pic_height_in_luma_samples);
BITS_PARSE("pic_cropping_flag", value, ps_bitstrm, 1);
ps_sps->i1_pic_cropping_flag = value;
if(ps_sps->i1_pic_cropping_flag)
{
UEV_PARSE("pic_crop_left_offset", value, ps_bitstrm);
ps_sps->i2_pic_crop_left_offset = value;
UEV_PARSE("pic_crop_right_offset", value, ps_bitstrm);
ps_sps->i2_pic_crop_right_offset = value;
UEV_PARSE("pic_crop_top_offset", value, ps_bitstrm);
ps_sps->i2_pic_crop_top_offset = value;
UEV_PARSE("pic_crop_bottom_offset", value, ps_bitstrm);
ps_sps->i2_pic_crop_bottom_offset = value;
}
else
{
ps_sps->i2_pic_crop_left_offset = 0;
ps_sps->i2_pic_crop_right_offset = 0;
ps_sps->i2_pic_crop_top_offset = 0;
ps_sps->i2_pic_crop_bottom_offset = 0;
}
UEV_PARSE("bit_depth_luma_minus8", value, ps_bitstrm);
if(0 != value)
return IHEVCD_UNSUPPORTED_BIT_DEPTH;
UEV_PARSE("bit_depth_chroma_minus8", value, ps_bitstrm);
if(0 != value)
return IHEVCD_UNSUPPORTED_BIT_DEPTH;
UEV_PARSE("log2_max_pic_order_cnt_lsb_minus4", value, ps_bitstrm);
ps_sps->i1_log2_max_pic_order_cnt_lsb = value + 4;
BITS_PARSE("sps_sub_layer_ordering_info_present_flag", value, ps_bitstrm, 1);
ps_sps->i1_sps_sub_layer_ordering_info_present_flag = value;
i = (ps_sps->i1_sps_sub_layer_ordering_info_present_flag ? 0 : (ps_sps->i1_sps_max_sub_layers - 1));
for(; i < ps_sps->i1_sps_max_sub_layers; i++)
{
UEV_PARSE("max_dec_pic_buffering", value, ps_bitstrm);
ps_sps->ai1_sps_max_dec_pic_buffering[i] = value + 1;
UEV_PARSE("num_reorder_pics", value, ps_bitstrm);
ps_sps->ai1_sps_max_num_reorder_pics[i] = value;
UEV_PARSE("max_latency_increase", value, ps_bitstrm);
ps_sps->ai1_sps_max_latency_increase[i] = value;
}
UEV_PARSE("log2_min_coding_block_size_minus3", value, ps_bitstrm);
ps_sps->i1_log2_min_coding_block_size = value + 3;
UEV_PARSE("log2_diff_max_min_coding_block_size", value, ps_bitstrm);
ps_sps->i1_log2_diff_max_min_coding_block_size = value;
UEV_PARSE("log2_min_transform_block_size_minus2", value, ps_bitstrm);
ps_sps->i1_log2_min_transform_block_size = value + 2;
UEV_PARSE("log2_diff_max_min_transform_block_size", value, ps_bitstrm);
ps_sps->i1_log2_diff_max_min_transform_block_size = value;
ps_sps->i1_log2_max_transform_block_size = ps_sps->i1_log2_min_transform_block_size +
ps_sps->i1_log2_diff_max_min_transform_block_size;
ps_sps->i1_log2_ctb_size = ps_sps->i1_log2_min_coding_block_size +
ps_sps->i1_log2_diff_max_min_coding_block_size;
if((ps_sps->i1_log2_min_coding_block_size < 3) ||
(ps_sps->i1_log2_min_transform_block_size < 2) ||
(ps_sps->i1_log2_diff_max_min_transform_block_size < 0) ||
(ps_sps->i1_log2_max_transform_block_size > ps_sps->i1_log2_ctb_size) ||
(ps_sps->i1_log2_ctb_size < 4) ||
(ps_sps->i1_log2_ctb_size > 6))
{
return IHEVCD_INVALID_PARAMETER;
}
ps_sps->i1_log2_min_pcm_coding_block_size = 0;
ps_sps->i1_log2_diff_max_min_pcm_coding_block_size = 0;
UEV_PARSE("max_transform_hierarchy_depth_inter", value, ps_bitstrm);
ps_sps->i1_max_transform_hierarchy_depth_inter = value;
UEV_PARSE("max_transform_hierarchy_depth_intra", value, ps_bitstrm);
ps_sps->i1_max_transform_hierarchy_depth_intra = value;
/* String has a d (enabled) in order to match with HM */
BITS_PARSE("scaling_list_enabled_flag", value, ps_bitstrm, 1);
ps_sps->i1_scaling_list_enable_flag = value;
if(ps_sps->i1_scaling_list_enable_flag)
{
COPY_DEFAULT_SCALING_LIST(ps_sps->pi2_scaling_mat);
BITS_PARSE("sps_scaling_list_data_present_flag", value, ps_bitstrm, 1);
ps_sps->i1_sps_scaling_list_data_present_flag = value;
if(ps_sps->i1_sps_scaling_list_data_present_flag)
ihevcd_scaling_list_data(ps_codec, ps_sps->pi2_scaling_mat);
}
else
{
COPY_FLAT_SCALING_LIST(ps_sps->pi2_scaling_mat);
}
/* String is asymmetric_motion_partitions_enabled_flag instead of amp_enabled_flag in order to match with HM */
BITS_PARSE("asymmetric_motion_partitions_enabled_flag", value, ps_bitstrm, 1);
ps_sps->i1_amp_enabled_flag = value;
BITS_PARSE("sample_adaptive_offset_enabled_flag", value, ps_bitstrm, 1);
ps_sps->i1_sample_adaptive_offset_enabled_flag = value;
BITS_PARSE("pcm_enabled_flag", value, ps_bitstrm, 1);
ps_sps->i1_pcm_enabled_flag = value;
if(ps_sps->i1_pcm_enabled_flag)
{
BITS_PARSE("pcm_sample_bit_depth_luma", value, ps_bitstrm, 4);
ps_sps->i1_pcm_sample_bit_depth_luma = value + 1;
BITS_PARSE("pcm_sample_bit_depth_chroma", value, ps_bitstrm, 4);
ps_sps->i1_pcm_sample_bit_depth_chroma = value + 1;
UEV_PARSE("log2_min_pcm_coding_block_size_minus3", value, ps_bitstrm);
ps_sps->i1_log2_min_pcm_coding_block_size = value + 3;
UEV_PARSE("log2_diff_max_min_pcm_coding_block_size", value, ps_bitstrm);
ps_sps->i1_log2_diff_max_min_pcm_coding_block_size = value;
BITS_PARSE("pcm_loop_filter_disable_flag", value, ps_bitstrm, 1);
ps_sps->i1_pcm_loop_filter_disable_flag = value;
}
UEV_PARSE("num_short_term_ref_pic_sets", value, ps_bitstrm);
ps_sps->i1_num_short_term_ref_pic_sets = value;
ps_sps->i1_num_short_term_ref_pic_sets = CLIP3(ps_sps->i1_num_short_term_ref_pic_sets, 0, MAX_STREF_PICS_SPS);
for(i = 0; i < ps_sps->i1_num_short_term_ref_pic_sets; i++)
ihevcd_short_term_ref_pic_set(ps_bitstrm, &ps_sps->as_stref_picset[0], ps_sps->i1_num_short_term_ref_pic_sets, i, &ps_sps->as_stref_picset[i]);
BITS_PARSE("long_term_ref_pics_present_flag", value, ps_bitstrm, 1);
ps_sps->i1_long_term_ref_pics_present_flag = value;
if(ps_sps->i1_long_term_ref_pics_present_flag)
{
UEV_PARSE("num_long_term_ref_pics_sps", value, ps_bitstrm);
ps_sps->i1_num_long_term_ref_pics_sps = value;
for(i = 0; i < ps_sps->i1_num_long_term_ref_pics_sps; i++)
{
BITS_PARSE("lt_ref_pic_poc_lsb_sps[ i ]", value, ps_bitstrm, ps_sps->i1_log2_max_pic_order_cnt_lsb);
ps_sps->ai1_lt_ref_pic_poc_lsb_sps[i] = value;
BITS_PARSE("used_by_curr_pic_lt_sps_flag[ i ]", value, ps_bitstrm, 1);
ps_sps->ai1_used_by_curr_pic_lt_sps_flag[i] = value;
}
}
BITS_PARSE("sps_temporal_mvp_enable_flag", value, ps_bitstrm, 1);
ps_sps->i1_sps_temporal_mvp_enable_flag = value;
/* Print matches HM 8-2 */
BITS_PARSE("sps_strong_intra_smoothing_enable_flag", value, ps_bitstrm, 1);
ps_sps->i1_strong_intra_smoothing_enable_flag = value;
BITS_PARSE("vui_parameters_present_flag", value, ps_bitstrm, 1);
ps_sps->i1_vui_parameters_present_flag = value;
if(ps_sps->i1_vui_parameters_present_flag)
ihevcd_parse_vui_parameters(ps_bitstrm,
&ps_sps->s_vui_parameters,
ps_sps->i1_sps_max_sub_layers - 1);
BITS_PARSE("sps_extension_flag", value, ps_bitstrm, 1);
{
WORD32 numerator;
WORD32 ceil_offset;
ceil_offset = (1 << ps_sps->i1_log2_ctb_size) - 1;
numerator = ps_sps->i2_pic_width_in_luma_samples;
ps_sps->i2_pic_wd_in_ctb = ((numerator + ceil_offset) /
(1 << ps_sps->i1_log2_ctb_size));
numerator = ps_sps->i2_pic_height_in_luma_samples;
ps_sps->i2_pic_ht_in_ctb = ((numerator + ceil_offset) /
(1 << ps_sps->i1_log2_ctb_size));
ps_sps->i4_pic_size_in_ctb = ps_sps->i2_pic_ht_in_ctb *
ps_sps->i2_pic_wd_in_ctb;
if(0 == ps_codec->i4_sps_done)
ps_codec->s_parse.i4_next_ctb_indx = ps_sps->i4_pic_size_in_ctb;
numerator = ps_sps->i2_pic_width_in_luma_samples;
ps_sps->i2_pic_wd_in_min_cb = numerator /
(1 << ps_sps->i1_log2_min_coding_block_size);
numerator = ps_sps->i2_pic_height_in_luma_samples;
ps_sps->i2_pic_ht_in_min_cb = numerator /
(1 << ps_sps->i1_log2_min_coding_block_size);
}
if((0 != ps_codec->i4_first_pic_done) &&
((ps_codec->i4_wd != ps_sps->i2_pic_width_in_luma_samples) ||
(ps_codec->i4_ht != ps_sps->i2_pic_height_in_luma_samples)))
{
ps_codec->i4_reset_flag = 1;
return (IHEVCD_ERROR_T)IVD_RES_CHANGED;
}
/* Update display width and display height */
{
WORD32 disp_wd, disp_ht;
WORD32 crop_unit_x, crop_unit_y;
crop_unit_x = 1;
crop_unit_y = 1;
if(CHROMA_FMT_IDC_YUV420 == ps_sps->i1_chroma_format_idc)
{
crop_unit_x = 2;
crop_unit_y = 2;
}
disp_wd = ps_sps->i2_pic_width_in_luma_samples;
disp_wd -= ps_sps->i2_pic_crop_left_offset * crop_unit_x;
disp_wd -= ps_sps->i2_pic_crop_right_offset * crop_unit_x;
disp_ht = ps_sps->i2_pic_height_in_luma_samples;
disp_ht -= ps_sps->i2_pic_crop_top_offset * crop_unit_y;
disp_ht -= ps_sps->i2_pic_crop_bottom_offset * crop_unit_y;
if((0 >= disp_wd) || (0 >= disp_ht))
return IHEVCD_INVALID_PARAMETER;
ps_codec->i4_disp_wd = disp_wd;
ps_codec->i4_disp_ht = disp_ht;
ps_codec->i4_wd = ps_sps->i2_pic_width_in_luma_samples;
ps_codec->i4_ht = ps_sps->i2_pic_height_in_luma_samples;
{
WORD32 ref_strd;
ref_strd = ALIGN32(ps_sps->i2_pic_width_in_luma_samples + PAD_WD);
if(ps_codec->i4_strd < ref_strd)
{
ps_codec->i4_strd = ref_strd;
}
}
if(0 == ps_codec->i4_share_disp_buf)
{
if(ps_codec->i4_disp_strd < ps_codec->i4_disp_wd)
{
ps_codec->i4_disp_strd = ps_codec->i4_disp_wd;
}
}
else
{
if(ps_codec->i4_disp_strd < ps_codec->i4_strd)
{
ps_codec->i4_disp_strd = ps_codec->i4_strd;
}
}
}
ps_codec->i4_sps_done = 1;
return ret;
}
void ihevcd_unmark_pps(codec_t *ps_codec, WORD32 sps_id)
{
WORD32 pps_id = 0;
pps_t *ps_pps = ps_codec->ps_pps_base;
for(pps_id = 0; pps_id < MAX_PPS_CNT - 1; pps_id++, ps_pps++)
{
if((ps_pps->i1_pps_valid) &&
(ps_pps->i1_sps_id == sps_id))
ps_pps->i1_pps_valid = 0;
}
}
void ihevcd_copy_sps(codec_t *ps_codec, WORD32 sps_id, WORD32 sps_id_ref)
{
sps_t *ps_sps, *ps_sps_ref;
WORD16 *pi2_scaling_mat_backup;
WORD32 scaling_mat_size;
SCALING_MAT_SIZE(scaling_mat_size);
ps_sps_ref = ps_codec->ps_sps_base + sps_id_ref;
ps_sps = ps_codec->ps_sps_base + sps_id;
if(ps_sps->i1_sps_valid)
{
if((ps_sps->i1_log2_ctb_size != ps_sps_ref->i1_log2_ctb_size) ||
(ps_sps->i2_pic_wd_in_ctb != ps_sps_ref->i2_pic_wd_in_ctb) ||
(ps_sps->i2_pic_ht_in_ctb != ps_sps_ref->i2_pic_ht_in_ctb))
{
ihevcd_unmark_pps(ps_codec, sps_id);
}
}
pi2_scaling_mat_backup = ps_sps->pi2_scaling_mat;
memcpy(ps_sps, ps_sps_ref, sizeof(sps_t));
ps_sps->pi2_scaling_mat = pi2_scaling_mat_backup;
memcpy(ps_sps->pi2_scaling_mat, ps_sps_ref->pi2_scaling_mat, scaling_mat_size * sizeof(WORD16));
ps_sps->i1_sps_valid = 1;
ps_codec->s_parse.ps_sps = ps_sps;
}
/**
*******************************************************************************
*
* @brief
* Parses PPS (Picture Parameter Set)
*
* @par Description:
* Parse Picture Parameter Set as per section Section: 7.3.2.3
* The pps is written to a temporary buffer and copied later to the
* appropriate location
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_pps(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 value;
WORD32 pps_id;
pps_t *ps_pps;
sps_t *ps_sps;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
if(0 == ps_codec->i4_sps_done)
return IHEVCD_INVALID_HEADER;
UEV_PARSE("pic_parameter_set_id", value, ps_bitstrm);
pps_id = value;
if((pps_id >= MAX_PPS_CNT) || (pps_id < 0))
{
if(ps_codec->i4_pps_done)
return IHEVCD_UNSUPPORTED_PPS_ID;
else
pps_id = 0;
}
ps_pps = (ps_codec->s_parse.ps_pps_base + MAX_PPS_CNT - 1);
ps_pps->i1_pps_id = pps_id;
UEV_PARSE("seq_parameter_set_id", value, ps_bitstrm);
ps_pps->i1_sps_id = value;
ps_pps->i1_sps_id = CLIP3(ps_pps->i1_sps_id, 0, MAX_SPS_CNT - 2);
ps_sps = (ps_codec->s_parse.ps_sps_base + ps_pps->i1_sps_id);
/* If the SPS that is being referred to has not been parsed,
* copy an existing SPS to the current location */
if(0 == ps_sps->i1_sps_valid)
{
return IHEVCD_INVALID_HEADER;
/*
sps_t *ps_sps_ref = ps_codec->ps_sps_base;
while(0 == ps_sps_ref->i1_sps_valid)
ps_sps_ref++;
ihevcd_copy_sps(ps_codec, ps_pps->i1_sps_id, ps_sps_ref->i1_sps_id);
*/
}
BITS_PARSE("dependent_slices_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_dependent_slice_enabled_flag = value;
BITS_PARSE("output_flag_present_flag", value, ps_bitstrm, 1);
ps_pps->i1_output_flag_present_flag = value;
BITS_PARSE("num_extra_slice_header_bits", value, ps_bitstrm, 3);
ps_pps->i1_num_extra_slice_header_bits = value;
BITS_PARSE("sign_data_hiding_flag", value, ps_bitstrm, 1);
ps_pps->i1_sign_data_hiding_flag = value;
BITS_PARSE("cabac_init_present_flag", value, ps_bitstrm, 1);
ps_pps->i1_cabac_init_present_flag = value;
UEV_PARSE("num_ref_idx_l0_default_active_minus1", value, ps_bitstrm);
ps_pps->i1_num_ref_idx_l0_default_active = value + 1;
UEV_PARSE("num_ref_idx_l1_default_active_minus1", value, ps_bitstrm);
ps_pps->i1_num_ref_idx_l1_default_active = value + 1;
SEV_PARSE("pic_init_qp_minus26", value, ps_bitstrm);
ps_pps->i1_pic_init_qp = value + 26;
BITS_PARSE("constrained_intra_pred_flag", value, ps_bitstrm, 1);
ps_pps->i1_constrained_intra_pred_flag = value;
BITS_PARSE("transform_skip_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_transform_skip_enabled_flag = value;
BITS_PARSE("cu_qp_delta_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_cu_qp_delta_enabled_flag = value;
if(ps_pps->i1_cu_qp_delta_enabled_flag)
{
UEV_PARSE("diff_cu_qp_delta_depth", value, ps_bitstrm);
ps_pps->i1_diff_cu_qp_delta_depth = value;
}
else
{
ps_pps->i1_diff_cu_qp_delta_depth = 0;
}
ps_pps->i1_log2_min_cu_qp_delta_size = ps_sps->i1_log2_ctb_size - ps_pps->i1_diff_cu_qp_delta_depth;
/* Print different */
SEV_PARSE("cb_qp_offset", value, ps_bitstrm);
ps_pps->i1_pic_cb_qp_offset = value;
/* Print different */
SEV_PARSE("cr_qp_offset", value, ps_bitstrm);
ps_pps->i1_pic_cr_qp_offset = value;
/* Print different */
BITS_PARSE("slicelevel_chroma_qp_flag", value, ps_bitstrm, 1);
ps_pps->i1_pic_slice_level_chroma_qp_offsets_present_flag = value;
BITS_PARSE("weighted_pred_flag", value, ps_bitstrm, 1);
ps_pps->i1_weighted_pred_flag = value;
BITS_PARSE("weighted_bipred_flag", value, ps_bitstrm, 1);
ps_pps->i1_weighted_bipred_flag = value;
BITS_PARSE("transquant_bypass_enable_flag", value, ps_bitstrm, 1);
ps_pps->i1_transquant_bypass_enable_flag = value;
BITS_PARSE("tiles_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_tiles_enabled_flag = value;
BITS_PARSE("entropy_coding_sync_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_entropy_coding_sync_enabled_flag = value;
ps_pps->i1_loop_filter_across_tiles_enabled_flag = 0;
if(ps_pps->i1_tiles_enabled_flag)
{
UEV_PARSE("num_tile_columns_minus1", value, ps_bitstrm);
ps_pps->i1_num_tile_columns = value + 1;
UEV_PARSE("num_tile_rows_minus1", value, ps_bitstrm);
ps_pps->i1_num_tile_rows = value + 1;
if((ps_pps->i1_num_tile_columns < 1) ||
(ps_pps->i1_num_tile_columns > ps_sps->i2_pic_wd_in_ctb) ||
(ps_pps->i1_num_tile_rows < 1) ||
(ps_pps->i1_num_tile_rows > ps_sps->i2_pic_ht_in_ctb))
return IHEVCD_INVALID_HEADER;
BITS_PARSE("uniform_spacing_flag", value, ps_bitstrm, 1);
ps_pps->i1_uniform_spacing_flag = value;
{
WORD32 start;
WORD32 i, j;
start = 0;
for(i = 0; i < ps_pps->i1_num_tile_columns; i++)
{
tile_t *ps_tile;
if(!ps_pps->i1_uniform_spacing_flag)
{
if(i < (ps_pps->i1_num_tile_columns - 1))
{
UEV_PARSE("column_width_minus1[ i ]", value, ps_bitstrm);
value += 1;
}
else
{
value = ps_sps->i2_pic_wd_in_ctb - start;
}
}
else
{
value = ((i + 1) * ps_sps->i2_pic_wd_in_ctb) / ps_pps->i1_num_tile_columns -
(i * ps_sps->i2_pic_wd_in_ctb) / ps_pps->i1_num_tile_columns;
}
for(j = 0; j < ps_pps->i1_num_tile_rows; j++)
{
ps_tile = ps_pps->ps_tile + j * ps_pps->i1_num_tile_columns + i;
ps_tile->u1_pos_x = start;
ps_tile->u2_wd = value;
}
start += value;
if((start > ps_sps->i2_pic_wd_in_ctb) ||
(value <= 0))
return IHEVCD_INVALID_HEADER;
}
start = 0;
for(i = 0; i < (ps_pps->i1_num_tile_rows); i++)
{
tile_t *ps_tile;
if(!ps_pps->i1_uniform_spacing_flag)
{
if(i < (ps_pps->i1_num_tile_rows - 1))
{
UEV_PARSE("row_height_minus1[ i ]", value, ps_bitstrm);
value += 1;
}
else
{
value = ps_sps->i2_pic_ht_in_ctb - start;
}
}
else
{
value = ((i + 1) * ps_sps->i2_pic_ht_in_ctb) / ps_pps->i1_num_tile_rows -
(i * ps_sps->i2_pic_ht_in_ctb) / ps_pps->i1_num_tile_rows;
}
for(j = 0; j < ps_pps->i1_num_tile_columns; j++)
{
ps_tile = ps_pps->ps_tile + i * ps_pps->i1_num_tile_columns + j;
ps_tile->u1_pos_y = start;
ps_tile->u2_ht = value;
}
start += value;
if((start > ps_sps->i2_pic_ht_in_ctb) ||
(value <= 0))
return IHEVCD_INVALID_HEADER;
}
}
BITS_PARSE("loop_filter_across_tiles_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_loop_filter_across_tiles_enabled_flag = value;
}
else
{
/* If tiles are not present, set first tile in each PPS to have tile
width and height equal to picture width and height */
ps_pps->i1_num_tile_columns = 1;
ps_pps->i1_num_tile_rows = 1;
ps_pps->i1_uniform_spacing_flag = 1;
ps_pps->ps_tile->u1_pos_x = 0;
ps_pps->ps_tile->u1_pos_y = 0;
ps_pps->ps_tile->u2_wd = ps_sps->i2_pic_wd_in_ctb;
ps_pps->ps_tile->u2_ht = ps_sps->i2_pic_ht_in_ctb;
}
BITS_PARSE("loop_filter_across_slices_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_loop_filter_across_slices_enabled_flag = value;
BITS_PARSE("deblocking_filter_control_present_flag", value, ps_bitstrm, 1);
ps_pps->i1_deblocking_filter_control_present_flag = value;
/* Default values */
ps_pps->i1_pic_disable_deblocking_filter_flag = 0;
ps_pps->i1_deblocking_filter_override_enabled_flag = 0;
ps_pps->i1_beta_offset_div2 = 0;
ps_pps->i1_tc_offset_div2 = 0;
if(ps_pps->i1_deblocking_filter_control_present_flag)
{
BITS_PARSE("deblocking_filter_override_enabled_flag", value, ps_bitstrm, 1);
ps_pps->i1_deblocking_filter_override_enabled_flag = value;
BITS_PARSE("pic_disable_deblocking_filter_flag", value, ps_bitstrm, 1);
ps_pps->i1_pic_disable_deblocking_filter_flag = value;
if(!ps_pps->i1_pic_disable_deblocking_filter_flag)
{
SEV_PARSE("pps_beta_offset_div2", value, ps_bitstrm);
ps_pps->i1_beta_offset_div2 = value;
SEV_PARSE("pps_tc_offset_div2", value, ps_bitstrm);
ps_pps->i1_tc_offset_div2 = value;
}
}
BITS_PARSE("pps_scaling_list_data_present_flag", value, ps_bitstrm, 1);
ps_pps->i1_pps_scaling_list_data_present_flag = value;
if(ps_pps->i1_pps_scaling_list_data_present_flag)
{
COPY_DEFAULT_SCALING_LIST(ps_pps->pi2_scaling_mat);
ihevcd_scaling_list_data(ps_codec, ps_pps->pi2_scaling_mat);
}
BITS_PARSE("lists_modification_present_flag", value, ps_bitstrm, 1);
ps_pps->i1_lists_modification_present_flag = value;
UEV_PARSE("log2_parallel_merge_level_minus2", value, ps_bitstrm);
ps_pps->i1_log2_parallel_merge_level = value + 2;
BITS_PARSE("slice_header_extension_present_flag", value, ps_bitstrm, 1);
ps_pps->i1_slice_header_extension_present_flag = value;
/* Not present in HM */
BITS_PARSE("pps_extension_flag", value, ps_bitstrm, 1);
ps_codec->i4_pps_done = 1;
return ret;
}
void ihevcd_copy_pps(codec_t *ps_codec, WORD32 pps_id, WORD32 pps_id_ref)
{
pps_t *ps_pps, *ps_pps_ref;
WORD16 *pi2_scaling_mat_backup;
WORD32 scaling_mat_size;
tile_t *ps_tile_backup;
WORD32 max_tile_cols, max_tile_rows;
WORD32 wd, ht;
wd = ALIGN64(ps_codec->i4_wd);
ht = ALIGN64(ps_codec->i4_ht);
SCALING_MAT_SIZE(scaling_mat_size);
max_tile_cols = (wd + MIN_TILE_WD - 1) / MIN_TILE_WD;
max_tile_rows = (ht + MIN_TILE_HT - 1) / MIN_TILE_HT;
ps_pps_ref = ps_codec->ps_pps_base + pps_id_ref;
ps_pps = ps_codec->ps_pps_base + pps_id;
pi2_scaling_mat_backup = ps_pps->pi2_scaling_mat;
ps_tile_backup = ps_pps->ps_tile;
memcpy(ps_pps, ps_pps_ref, sizeof(pps_t));
ps_pps->pi2_scaling_mat = pi2_scaling_mat_backup;
ps_pps->ps_tile = ps_tile_backup;
memcpy(ps_pps->pi2_scaling_mat, ps_pps_ref->pi2_scaling_mat, scaling_mat_size * sizeof(WORD16));
memcpy(ps_pps->ps_tile, ps_pps_ref->ps_tile, max_tile_cols * max_tile_rows * sizeof(tile_t));
ps_pps->i1_pps_valid = 1;
ps_codec->s_parse.ps_pps = ps_pps;
}
/**
*******************************************************************************
*
* @brief
* Parses SEI (Supplemental Enhancement Information)
*
* @par Description:
* Parses SEI (Supplemental Enhancement Information) as per Section: 7.3.7
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_sei(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
UNUSED(ps_codec);
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Access unit delimiter
*
* @par Description:
* Parses Access unit delimiter as per section Section: 7.3.2.5
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error code from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
WORD32 ihevcd_parse_aud(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
UNUSED(ps_codec);
return ret;
}
WORD32 ihevcd_extend_sign_bit(WORD32 value, WORD32 num_bits)
{
WORD32 ret_value = value;
if(value >> (num_bits - 1))
{
ret_value |= (0xFFFFFFFF << num_bits);
}
return ret_value;
}
/**
*******************************************************************************
*
* @brief
* Calculate POC of the current slice
*
* @par Description:
* Calculates the current POC using the previous POC lsb and previous POC msb
*
* @param[in] ps_codec
* Pointer to codec context
*
* @param[in] i1_pic_order_cnt_lsb
* Current POC lsb
*
* @returns Current absolute POC
*
* @remarks
*
*
*******************************************************************************
*/
WORD32 ihevcd_calc_poc(codec_t *ps_codec, nal_header_t *ps_nal, WORD8 i1_log2_max_poc_lsb, WORD32 i2_poc_lsb)
{
WORD32 i4_abs_poc, i4_poc_msb;
WORD32 max_poc_lsb;
WORD8 i1_nal_unit_type = ps_nal->i1_nal_unit_type;
max_poc_lsb = (1 << i1_log2_max_poc_lsb);
if((!ps_codec->i4_first_pic_done) && (!ps_codec->i4_pic_present))
ps_codec->i4_prev_poc_msb = -2 * max_poc_lsb;
if(NAL_IDR_N_LP == i1_nal_unit_type
|| NAL_IDR_W_LP == i1_nal_unit_type
|| NAL_BLA_N_LP == i1_nal_unit_type
|| NAL_BLA_W_DLP == i1_nal_unit_type
|| NAL_BLA_W_LP == i1_nal_unit_type
|| (NAL_CRA == i1_nal_unit_type && !ps_codec->i4_first_pic_done))
{
i4_poc_msb = ps_codec->i4_prev_poc_msb + 2 * max_poc_lsb;
ps_codec->i4_prev_poc_lsb = 0;
ps_codec->i4_max_prev_poc_lsb = 0;
// ps_codec->i4_prev_poc_msb = 0;
}
else
{
if((i2_poc_lsb < ps_codec->i4_prev_poc_lsb)
&& ((ps_codec->i4_prev_poc_lsb - i2_poc_lsb) >= max_poc_lsb / 2))
{
i4_poc_msb = ps_codec->i4_prev_poc_msb + max_poc_lsb;
}
else if((i2_poc_lsb > ps_codec->i4_prev_poc_lsb)
&& ((i2_poc_lsb - ps_codec->i4_prev_poc_lsb) > max_poc_lsb / 2))
{
i4_poc_msb = ps_codec->i4_prev_poc_msb - max_poc_lsb;
}
else
{
i4_poc_msb = ps_codec->i4_prev_poc_msb;
}
}
i4_abs_poc = i4_poc_msb + i2_poc_lsb;
ps_codec->i4_max_prev_poc_lsb = MAX(ps_codec->i4_max_prev_poc_lsb, i2_poc_lsb);
{
WORD32 is_reference_nal = ((i1_nal_unit_type <= NAL_RSV_VCL_R15) && (i1_nal_unit_type % 2 != 0)) || ((i1_nal_unit_type >= NAL_BLA_W_LP) && (i1_nal_unit_type <= NAL_RSV_RAP_VCL23));
WORD32 update_prev_poc = ((is_reference_nal) && ((i1_nal_unit_type < NAL_RADL_N) || (i1_nal_unit_type > NAL_RASL_R)));
if((0 == ps_nal->i1_nuh_temporal_id) &&
(update_prev_poc))
{
ps_codec->i4_prev_poc_lsb = i2_poc_lsb;
ps_codec->i4_prev_poc_msb = i4_poc_msb;
}
}
return i4_abs_poc;
}
void ihevcd_copy_slice_hdr(codec_t *ps_codec, WORD32 slice_idx, WORD32 slice_idx_ref)
{
slice_header_t *ps_slice_hdr, *ps_slice_hdr_ref;
WORD32 *pu4_entry_offset_backup;
ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr_base + slice_idx;
ps_slice_hdr_ref = ps_codec->s_parse.ps_slice_hdr_base + slice_idx_ref;
pu4_entry_offset_backup = ps_slice_hdr->pu4_entry_point_offset;
memcpy(ps_slice_hdr, ps_slice_hdr_ref, sizeof(slice_header_t));
ps_slice_hdr->pu4_entry_point_offset = pu4_entry_offset_backup;
}