blob: f56ba8ebf219992b1700e63016fe1347cd1da0bc [file] [log] [blame]
/******************************************************************************
*
* 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_slice.c
*
* @brief
* Contains functions for parsing slice data
*
* @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 "ithread.h"
#include "ihevc_defs.h"
#include "ihevc_debug.h"
#include "ihevc_structs.h"
#include "ihevc_macros.h"
#include "ihevc_mem_fns.h"
#include "ihevc_platform_macros.h"
#include "ihevc_common_tables.h"
#include "ihevc_error.h"
#include "ihevc_cabac_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_nal.h"
#include "ihevcd_bitstream.h"
#include "ihevcd_utils.h"
#include "ihevcd_parse_slice.h"
#include "ihevcd_parse_residual.h"
#include "ihevcd_cabac.h"
#include "ihevcd_job_queue.h"
#include "ihevcd_intra_pred_mode_prediction.h"
#include "ihevcd_common_tables.h"
#include "ihevcd_process_slice.h"
#include "ihevcd_debug.h"
#include "ihevcd_get_mv.h"
#include "ihevcd_boundary_strength.h"
#include "ihevcd_ilf_padding.h"
#include "ihevcd_statistics.h"
/* Bit stream offset threshold */
#define BITSTRM_OFF_THRS 8
#define MIN_CU_QP_DELTA_ABS(x) (-26 + ((x) * 6) / 2)
#define MAX_CU_QP_DELTA_ABS(x) (25 + ((x) * 6) / 2)
/**
* Table used to decode part_mode if AMP is enabled and current CU is not min CU
*/
const UWORD8 gau1_part_mode_amp[] = { PART_nLx2N, PART_nRx2N, PART_Nx2N, 0xFF, PART_2NxnU, PART_2NxnD, PART_2NxN, 0xFF };
const UWORD32 gau4_ct_depth_mask[] = { 0x0, 0x55555555, 0xAAAAAAAA, 0xFFFFFFFF };
/**
*******************************************************************************
*
* @brief
* Parses Transform tree syntax
*
* @par Description:
* Parses Transform tree syntax as per Section:7.3.9.8
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Status
*
* @remarks
*
*
*******************************************************************************
*/
WORD32 ihevcd_parse_transform_tree(codec_t *ps_codec,
WORD32 x0, WORD32 y0,
WORD32 cu_x_base, WORD32 cu_y_base,
WORD32 log2_trafo_size,
WORD32 trafo_depth,
WORD32 blk_idx,
WORD32 intra_pred_mode)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
sps_t *ps_sps;
pps_t *ps_pps;
WORD32 value;
WORD32 x1, y1;
WORD32 max_trafo_depth;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
WORD32 intra_split_flag;
WORD32 split_transform_flag;
WORD32 ctxt_idx;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
max_trafo_depth = ps_codec->s_parse.s_cu.i4_max_trafo_depth;
ps_sps = ps_codec->s_parse.ps_sps;
ps_pps = ps_codec->s_parse.ps_pps;
intra_split_flag = ps_codec->s_parse.s_cu.i4_intra_split_flag;
{
split_transform_flag = 0;
if((log2_trafo_size <= ps_sps->i1_log2_max_transform_block_size) &&
(log2_trafo_size > ps_sps->i1_log2_min_transform_block_size) &&
(trafo_depth < max_trafo_depth) &&
!(intra_split_flag && (trafo_depth == 0)))
{
/* encode the split transform flag, context derived as per Table9-37 */
ctxt_idx = IHEVC_CAB_SPLIT_TFM + (5 - log2_trafo_size);
TRACE_CABAC_CTXT("split_transform_flag", ps_cabac->u4_range, ctxt_idx);
split_transform_flag = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("split_transform_flag", split_transform_flag,
ps_cabac->u4_range);
}
else
{
WORD32 inter_split_flag = 0;
if((0 == ps_sps->i1_max_transform_hierarchy_depth_inter) &&
(PRED_MODE_INTER == ps_codec->s_parse.s_cu.i4_pred_mode) &&
(PART_2Nx2N != ps_codec->s_parse.s_cu.i4_part_mode) &&
(0 == trafo_depth))
{
inter_split_flag = 1;
}
if((log2_trafo_size > ps_sps->i1_log2_max_transform_block_size) ||
((1 == intra_split_flag) && (0 == trafo_depth)) ||
(1 == inter_split_flag))
{
split_transform_flag = 1;
}
}
if(0 == trafo_depth)
{
ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth] = 0;
ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth] = 0;
}
else
{
ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth] = ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth - 1];
ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth] = ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth - 1];
}
if(trafo_depth == 0 || log2_trafo_size > 2)
{
ctxt_idx = IHEVC_CAB_CBCR_IDX + trafo_depth;
/* CBF for Cb/Cr is sent only if the parent CBF for Cb/Cr is non-zero */
if((trafo_depth == 0) || ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth - 1])
{
TRACE_CABAC_CTXT("cbf_cb", ps_cabac->u4_range, ctxt_idx);
value = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("cbf_cb", value, ps_cabac->u4_range);
ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth] = value;
}
if((trafo_depth == 0) || ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth - 1])
{
TRACE_CABAC_CTXT("cbf_cr", ps_cabac->u4_range, ctxt_idx);
value = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("cbf_cr", value, ps_cabac->u4_range);
ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth] = value;
}
}
if(split_transform_flag)
{
WORD32 intra_pred_mode_tmp;
x1 = x0 + ((1 << log2_trafo_size) >> 1);
y1 = y0 + ((1 << log2_trafo_size) >> 1);
/* For transform depth of zero, intra pred mode as decoded at CU */
/* level is sent to the transform tree nodes */
/* When depth is non-zero intra pred mode of parent node is sent */
/* This takes care of passing correct mode to all the child nodes */
intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[0];
ihevcd_parse_transform_tree(ps_codec, x0, y0, x0, y0, log2_trafo_size - 1, trafo_depth + 1, 0, intra_pred_mode_tmp);
intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[1];
ihevcd_parse_transform_tree(ps_codec, x1, y0, x0, y0, log2_trafo_size - 1, trafo_depth + 1, 1, intra_pred_mode_tmp);
intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[2];
ihevcd_parse_transform_tree(ps_codec, x0, y1, x0, y0, log2_trafo_size - 1, trafo_depth + 1, 2, intra_pred_mode_tmp);
intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[3];
ihevcd_parse_transform_tree(ps_codec, x1, y1, x0, y0, log2_trafo_size - 1, trafo_depth + 1, 3, intra_pred_mode_tmp);
}
else
{
WORD32 ctb_x_base;
WORD32 ctb_y_base;
WORD32 cu_qp_delta_abs;
tu_t *ps_tu = ps_codec->s_parse.ps_tu;
cu_qp_delta_abs = 0;
ctb_x_base = ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size;
ctb_y_base = ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size;
if((ps_codec->s_parse.s_cu.i4_pred_mode == PRED_MODE_INTRA) ||
(trafo_depth != 0) ||
(ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth]) ||
(ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth]))
{
ctxt_idx = IHEVC_CAB_CBF_LUMA_IDX;
ctxt_idx += (trafo_depth == 0) ? 1 : 0;
TRACE_CABAC_CTXT("cbf_luma", ps_cabac->u4_range, ctxt_idx);
value = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("cbf_luma", value, ps_cabac->u4_range);
ps_codec->s_parse.s_cu.i1_cbf_luma = value;
}
else
{
ps_codec->s_parse.s_cu.i1_cbf_luma = 1;
}
/* Initialize ps_tu to default values */
/* If required change this to WORD32 packed write */
ps_tu->b1_cb_cbf = 0;
ps_tu->b1_cr_cbf = 0;
ps_tu->b1_y_cbf = 0;
ps_tu->b4_pos_x = ((x0 - ctb_x_base) >> 2);
ps_tu->b4_pos_y = ((y0 - ctb_y_base) >> 2);
ps_tu->b1_transquant_bypass = ps_codec->s_parse.s_cu.i4_cu_transquant_bypass;
ps_tu->b3_size = (log2_trafo_size - 2);
ps_tu->b7_qp = ps_codec->s_parse.u4_qp;
ps_tu->b6_luma_intra_mode = intra_pred_mode;
ps_tu->b3_chroma_intra_mode_idx = ps_codec->s_parse.s_cu.i4_intra_chroma_pred_mode_idx;
/* Section:7.3.12 Transform unit syntax inlined here */
if(ps_codec->s_parse.s_cu.i1_cbf_luma ||
ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth] ||
ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth])
{
WORD32 intra_pred_mode_chroma;
if(ps_pps->i1_cu_qp_delta_enabled_flag && !ps_codec->s_parse.i4_is_cu_qp_delta_coded)
{
WORD32 c_max = TU_MAX_QP_DELTA_ABS;
WORD32 ctxt_inc = IHEVC_CAB_QP_DELTA_ABS;
WORD32 ctxt_inc_max = CTXT_MAX_QP_DELTA_ABS;
TRACE_CABAC_CTXT("cu_qp_delta_abs", ps_cabac->u4_range, ctxt_inc);
/* qp_delta_abs is coded as combination of tunary and eg0 code */
/* See Table 9-32 and Table 9-37 for details on cu_qp_delta_abs */
cu_qp_delta_abs = ihevcd_cabac_decode_bins_tunary(ps_cabac,
ps_bitstrm,
c_max,
ctxt_inc,
0,
ctxt_inc_max);
if(cu_qp_delta_abs >= c_max)
{
value = ihevcd_cabac_decode_bypass_bins_egk(ps_cabac, ps_bitstrm, 0);
cu_qp_delta_abs += value;
}
AEV_TRACE("cu_qp_delta_abs", cu_qp_delta_abs, ps_cabac->u4_range);
ps_codec->s_parse.i4_is_cu_qp_delta_coded = 1;
if(cu_qp_delta_abs)
{
value = ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
AEV_TRACE("cu_qp_delta_sign", value, ps_cabac->u4_range);
if(value)
cu_qp_delta_abs = -cu_qp_delta_abs;
}
if (cu_qp_delta_abs < MIN_CU_QP_DELTA_ABS(ps_sps->i1_bit_depth_luma_minus8)
|| cu_qp_delta_abs > MAX_CU_QP_DELTA_ABS(ps_sps->i1_bit_depth_luma_minus8))
{
return IHEVCD_INVALID_PARAMETER;
}
ps_codec->s_parse.s_cu.i4_cu_qp_delta = cu_qp_delta_abs;
}
if(ps_codec->s_parse.s_cu.i1_cbf_luma)
{
ps_tu->b1_y_cbf = 1;
ihevcd_parse_residual_coding(ps_codec, x0, y0, log2_trafo_size, 0, intra_pred_mode);
}
if(4 == ps_codec->s_parse.s_cu.i4_intra_chroma_pred_mode_idx)
intra_pred_mode_chroma = ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[0];
else
{
intra_pred_mode_chroma = gau1_intra_pred_chroma_modes[ps_codec->s_parse.s_cu.i4_intra_chroma_pred_mode_idx];
if(intra_pred_mode_chroma ==
ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[0])
{
intra_pred_mode_chroma = INTRA_ANGULAR(34);
}
}
if(log2_trafo_size > 2)
{
if(ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth])
{
ps_tu->b1_cb_cbf = 1;
ihevcd_parse_residual_coding(ps_codec, x0, y0, log2_trafo_size - 1, 1, intra_pred_mode_chroma);
}
if(ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth])
{
ps_tu->b1_cr_cbf = 1;
ihevcd_parse_residual_coding(ps_codec, x0, y0, log2_trafo_size - 1, 2, intra_pred_mode_chroma);
}
}
else if(blk_idx == 3)
{
if(ps_codec->s_parse.s_cu.ai1_cbf_cb[trafo_depth])
{
ps_tu->b1_cb_cbf = 1;
ihevcd_parse_residual_coding(ps_codec, cu_x_base, cu_y_base, log2_trafo_size, 1, intra_pred_mode_chroma);
}
if(ps_codec->s_parse.s_cu.ai1_cbf_cr[trafo_depth])
{
ps_tu->b1_cr_cbf = 1;
ihevcd_parse_residual_coding(ps_codec, cu_x_base, cu_y_base, log2_trafo_size, 2, intra_pred_mode_chroma);
}
}
else
{
//ps_tu->b1_chroma_present = 0;
ps_tu->b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE;
}
}
else
{
if((3 != blk_idx) && (2 == log2_trafo_size))
{
ps_tu->b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE;
}
}
/* Set the first TU in CU flag */
{
if((ps_codec->s_parse.s_cu.i4_pos_x << 3) == (ps_tu->b4_pos_x << 2) &&
(ps_codec->s_parse.s_cu.i4_pos_y << 3) == (ps_tu->b4_pos_y << 2))
{
ps_tu->b1_first_tu_in_cu = 1;
}
else
{
ps_tu->b1_first_tu_in_cu = 0;
}
}
ps_codec->s_parse.ps_tu++;
ps_codec->s_parse.s_cu.i4_tu_cnt++;
ps_codec->s_parse.i4_pic_tu_idx++;
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Motion vector difference
*
* @par Description:
* Parses Motion vector difference as per Section:7.3.9.9
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_mvd(codec_t *ps_codec, mv_t *ps_mv)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 value;
WORD32 abs_mvd;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
WORD32 abs_mvd_greater0_flag[2];
WORD32 abs_mvd_greater1_flag[2];
WORD32 ctxt_idx;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
ctxt_idx = IHEVC_CAB_MVD_GRT0;
/* encode absmvd_x > 0 */
TRACE_CABAC_CTXT("abs_mvd_greater0_flag[0]", ps_cabac->u4_range, ctxt_idx);
abs_mvd_greater0_flag[0] = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("abs_mvd_greater0_flag[0]", abs_mvd_greater0_flag[0], ps_cabac->u4_range);
/* encode absmvd_y > 0 */
TRACE_CABAC_CTXT("abs_mvd_greater0_flag[1]", ps_cabac->u4_range, ctxt_idx);
abs_mvd_greater0_flag[1] = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("abs_mvd_greater0_flag[1]", abs_mvd_greater0_flag[1], ps_cabac->u4_range);
ctxt_idx = IHEVC_CAB_MVD_GRT1;
abs_mvd_greater1_flag[0] = 0;
abs_mvd_greater1_flag[1] = 0;
if(abs_mvd_greater0_flag[0])
{
TRACE_CABAC_CTXT("abs_mvd_greater1_flag[0]", ps_cabac->u4_range, ctxt_idx);
abs_mvd_greater1_flag[0] = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("abs_mvd_greater1_flag[0]", abs_mvd_greater1_flag[0], ps_cabac->u4_range);
}
if(abs_mvd_greater0_flag[1])
{
TRACE_CABAC_CTXT("abs_mvd_greater1_flag[1]", ps_cabac->u4_range, ctxt_idx);
abs_mvd_greater1_flag[1] = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("abs_mvd_greater1_flag[1]", abs_mvd_greater1_flag[1], ps_cabac->u4_range);
}
abs_mvd = 0;
if(abs_mvd_greater0_flag[0])
{
abs_mvd = 1;
if(abs_mvd_greater1_flag[0])
{
value = ihevcd_cabac_decode_bypass_bins_egk(ps_cabac, ps_bitstrm, 1);
AEV_TRACE("abs_mvd_minus2[0]", value, ps_cabac->u4_range);
abs_mvd = value + 2;
}
value = ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
AEV_TRACE("mvd_sign_flag[0]", value, ps_cabac->u4_range);
if(value)
{
abs_mvd = -abs_mvd;
}
}
ps_mv->i2_mvx = abs_mvd;
abs_mvd = 0;
if(abs_mvd_greater0_flag[1])
{
abs_mvd = 1;
if(abs_mvd_greater1_flag[1])
{
value = ihevcd_cabac_decode_bypass_bins_egk(ps_cabac, ps_bitstrm, 1);
AEV_TRACE("abs_mvd_minus2[1]", value, ps_cabac->u4_range);
abs_mvd = value + 2;
}
value = ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
AEV_TRACE("mvd_sign_flag[1]", value, ps_cabac->u4_range);
if(value)
{
abs_mvd = -abs_mvd;
}
}
ps_mv->i2_mvy = abs_mvd;
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses PCM sample
*
*
* @par Description:
* Parses PCM sample as per Section:7.3.9.7 Pcm sample syntax
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_pcm_sample(codec_t *ps_codec,
WORD32 x0,
WORD32 y0,
WORD32 log2_cb_size)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
sps_t *ps_sps;
WORD32 value;
WORD32 i;
WORD32 num_bits;
UWORD32 u4_sig_coeff_map;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
tu_t *ps_tu = ps_codec->s_parse.ps_tu;
tu_sblk_coeff_data_t *ps_tu_sblk_coeff_data;
UWORD8 *pu1_coeff_data;
ps_sps = ps_codec->s_parse.ps_sps;
UNUSED(value);
UNUSED(ps_tu);
UNUSED(ps_cabac);
UNUSED(x0);
UNUSED(y0);
{
WORD8 *pi1_scan_idx;
WORD8 *pi1_buf = (WORD8 *)ps_codec->s_parse.pv_tu_coeff_data;
WORD8 *pi1_num_coded_subblks;
/* First WORD8 gives number of coded subblocks */
pi1_num_coded_subblks = pi1_buf++;
/* Set number of coded subblocks in the current TU to zero */
/* For PCM there will be only one subblock which is the same size as CU */
*pi1_num_coded_subblks = 1;
/* Second WORD8 gives (scan idx << 1) | trans_skip */
pi1_scan_idx = pi1_buf++;
*pi1_scan_idx = (0 << 1) | 1;
/* Store the incremented pointer in pv_tu_coeff_data */
ps_codec->s_parse.pv_tu_coeff_data = pi1_buf;
}
u4_sig_coeff_map = 0xFFFFFFFF;
ps_tu_sblk_coeff_data = (tu_sblk_coeff_data_t *)ps_codec->s_parse.pv_tu_coeff_data;
ps_tu_sblk_coeff_data->u2_sig_coeff_map = u4_sig_coeff_map;
ps_tu_sblk_coeff_data->u2_subblk_pos = 0;
pu1_coeff_data = (UWORD8 *)&ps_tu_sblk_coeff_data->ai2_level[0];
num_bits = ps_sps->i1_pcm_sample_bit_depth_luma;
for(i = 0; i < 1 << (log2_cb_size << 1); i++)
{
TRACE_CABAC_CTXT("pcm_sample_luma", ps_cabac->u4_range, 0);
BITS_PARSE("pcm_sample_luma", value, ps_bitstrm, num_bits);
//ps_pcmsample_t->i1_pcm_sample_luma[i] = value;
*pu1_coeff_data++ = value << (BIT_DEPTH_LUMA - num_bits);
}
num_bits = ps_sps->i1_pcm_sample_bit_depth_chroma;
for(i = 0; i < (1 << (log2_cb_size << 1)) >> 1; i++)
{
TRACE_CABAC_CTXT("pcm_sample_chroma", ps_cabac->u4_range, 0);
BITS_PARSE("pcm_sample_chroma", value, ps_bitstrm, num_bits);
// ps_pcmsample_t->i1_pcm_sample_chroma[i] = value;
*pu1_coeff_data++ = value << (BIT_DEPTH_CHROMA - num_bits);
}
ps_codec->s_parse.pv_tu_coeff_data = pu1_coeff_data;
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Prediction unit
*
* @par Description:
* Parses Prediction unit as per Section:7.3.9.6
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_pu_mvp(codec_t *ps_codec, pu_t *ps_pu)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 value;
slice_header_t *ps_slice_hdr;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
WORD32 inter_pred_idc;
ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr;
if(ps_slice_hdr->i1_slice_type == BSLICE)
{
WORD32 pu_w_plus_pu_h;
WORD32 ctxt_idx;
/* required to check if w+h==12 case */
pu_w_plus_pu_h = ((ps_pu->b4_wd + 1) << 2) + ((ps_pu->b4_ht + 1) << 2);
if(12 == pu_w_plus_pu_h)
{
ctxt_idx = IHEVC_CAB_INTER_PRED_IDC + 4;
TRACE_CABAC_CTXT("inter_pred_idc", ps_cabac->u4_range, ctxt_idx);
inter_pred_idc = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm,
ctxt_idx);
}
else
{
/* larger PUs can be encoded as bi_pred/l0/l1 inter_pred_idc */
WORD32 is_bipred;
ctxt_idx = IHEVC_CAB_INTER_PRED_IDC + ps_codec->s_parse.i4_ct_depth;
TRACE_CABAC_CTXT("inter_pred_idc", ps_cabac->u4_range, ctxt_idx);
is_bipred = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
inter_pred_idc = PRED_BI;
if(!is_bipred)
{
ctxt_idx = IHEVC_CAB_INTER_PRED_IDC + 4;
inter_pred_idc = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm,
ctxt_idx);
}
}
AEV_TRACE("inter_pred_idc", inter_pred_idc, ps_cabac->u4_range);
}
else
inter_pred_idc = PRED_L0;
ps_pu->mv.i1_l0_ref_idx = 0;
ps_pu->mv.i1_l1_ref_idx = 0;
/* Decode MVD for L0 for PRED_L0 or PRED_BI */
if(inter_pred_idc != PRED_L1)
{
WORD32 active_refs = ps_slice_hdr->i1_num_ref_idx_l0_active;
WORD32 ref_idx = 0;
WORD32 ctxt_idx;
if(active_refs > 1)
{
ctxt_idx = IHEVC_CAB_INTER_REF_IDX;
/* encode the context modelled first bin */
TRACE_CABAC_CTXT("ref_idx", ps_cabac->u4_range, ctxt_idx);
ref_idx = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
if((active_refs > 2) && ref_idx)
{
WORD32 value;
/* encode the context modelled second bin */
ctxt_idx++;
value = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
ref_idx += value;
if((active_refs > 3) && value)
{
/* encode remaining bypass bins */
ref_idx = ihevcd_cabac_decode_bypass_bins_tunary(ps_cabac,
ps_bitstrm,
(active_refs - 3)
);
ref_idx += 2;
}
}
AEV_TRACE("ref_idx", ref_idx, ps_cabac->u4_range);
}
ref_idx = CLIP3(ref_idx, 0, MAX_DPB_SIZE - 1);
ps_pu->mv.i1_l0_ref_idx = ref_idx;
ihevcd_parse_mvd(ps_codec, &ps_pu->mv.s_l0_mv);
ctxt_idx = IHEVC_CAB_MVP_L0L1;
value = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
ctxt_idx);
AEV_TRACE("mvp_l0/l1_flag", value, ps_cabac->u4_range);
ps_pu->b1_l0_mvp_idx = value;
}
/* Decode MVD for L1 for PRED_L1 or PRED_BI */
if(inter_pred_idc != PRED_L0)
{
WORD32 active_refs = ps_slice_hdr->i1_num_ref_idx_l1_active;
WORD32 ref_idx = 0;
WORD32 ctxt_idx;
if(active_refs > 1)
{
ctxt_idx = IHEVC_CAB_INTER_REF_IDX;
TRACE_CABAC_CTXT("ref_idx", ps_cabac->u4_range, ctxt_idx);
/* encode the context modelled first bin */
ref_idx = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
if((active_refs > 2) && ref_idx)
{
WORD32 value;
/* encode the context modelled second bin */
ctxt_idx++;
value = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
ref_idx += value;
if((active_refs > 3) && value)
{
/* encode remaining bypass bins */
ref_idx = ihevcd_cabac_decode_bypass_bins_tunary(ps_cabac,
ps_bitstrm,
(active_refs - 3)
);
ref_idx += 2;
}
}
AEV_TRACE("ref_idx", ref_idx, ps_cabac->u4_range);
}
ref_idx = CLIP3(ref_idx, 0, MAX_DPB_SIZE - 1);
ps_pu->mv.i1_l1_ref_idx = ref_idx;
if(ps_slice_hdr->i1_mvd_l1_zero_flag && inter_pred_idc == PRED_BI)
{
ps_pu->mv.s_l1_mv.i2_mvx = 0;
ps_pu->mv.s_l1_mv.i2_mvy = 0;
}
else
{
ihevcd_parse_mvd(ps_codec, &ps_pu->mv.s_l1_mv);
}
ctxt_idx = IHEVC_CAB_MVP_L0L1;
value = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
ctxt_idx);
AEV_TRACE("mvp_l0/l1_flag", value, ps_cabac->u4_range);
ps_pu->b1_l1_mvp_idx = value;
}
ps_pu->b2_pred_mode = inter_pred_idc;
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Prediction unit
*
* @par Description:
* Parses Prediction unit as per Section:7.3.9.6
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_prediction_unit(codec_t *ps_codec,
WORD32 x0,
WORD32 y0,
WORD32 wd,
WORD32 ht)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
slice_header_t *ps_slice_hdr;
sps_t *ps_sps;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
WORD32 ctb_x_base;
WORD32 ctb_y_base;
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr;
/* Set PU structure to default values */
memset(ps_pu, 0, sizeof(pu_t));
ps_sps = ps_codec->s_parse.ps_sps;
ctb_x_base = ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size;
ctb_y_base = ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size;
ps_pu->b4_pos_x = (x0 - ctb_x_base) >> 2;
ps_pu->b4_pos_y = (y0 - ctb_y_base) >> 2;
ps_pu->b4_wd = (wd >> 2) - 1;
ps_pu->b4_ht = (ht >> 2) - 1;
ps_pu->b1_intra_flag = 0;
ps_pu->b3_part_mode = ps_codec->s_parse.s_cu.i4_part_mode;
if(PRED_MODE_SKIP == ps_codec->s_parse.s_cu.i4_pred_mode)
{
WORD32 merge_idx = 0;
if(ps_slice_hdr->i1_max_num_merge_cand > 1)
{
WORD32 ctxt_idx = IHEVC_CAB_MERGE_IDX_EXT;
WORD32 bin;
TRACE_CABAC_CTXT("merge_idx", ps_cabac->u4_range, ctxt_idx);
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
if(bin)
{
if(ps_slice_hdr->i1_max_num_merge_cand > 2)
{
merge_idx = ihevcd_cabac_decode_bypass_bins_tunary(
ps_cabac, ps_bitstrm,
(ps_slice_hdr->i1_max_num_merge_cand - 2));
}
merge_idx++;
}
AEV_TRACE("merge_idx", merge_idx, ps_cabac->u4_range);
}
ps_pu->b1_merge_flag = 1;
ps_pu->b3_merge_idx = merge_idx;
}
else
{
/* MODE_INTER */
WORD32 merge_flag;
WORD32 ctxt_idx = IHEVC_CAB_MERGE_FLAG_EXT;
TRACE_CABAC_CTXT("merge_flag", ps_cabac->u4_range, ctxt_idx);
merge_flag = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("merge_flag", merge_flag, ps_cabac->u4_range);
ps_pu->b1_merge_flag = merge_flag;
if(merge_flag)
{
WORD32 merge_idx = 0;
if(ps_slice_hdr->i1_max_num_merge_cand > 1)
{
WORD32 ctxt_idx = IHEVC_CAB_MERGE_IDX_EXT;
WORD32 bin;
TRACE_CABAC_CTXT("merge_idx", ps_cabac->u4_range, ctxt_idx);
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
if(bin)
{
if(ps_slice_hdr->i1_max_num_merge_cand > 2)
{
merge_idx = ihevcd_cabac_decode_bypass_bins_tunary(
ps_cabac, ps_bitstrm,
(ps_slice_hdr->i1_max_num_merge_cand - 2));
}
merge_idx++;
}
AEV_TRACE("merge_idx", merge_idx, ps_cabac->u4_range);
}
ps_pu->b3_merge_idx = merge_idx;
}
else
{
ihevcd_parse_pu_mvp(ps_codec, ps_pu);
}
}
STATS_UPDATE_PU_SIZE(ps_pu);
/* Increment PU pointer */
ps_codec->s_parse.ps_pu++;
ps_codec->s_parse.i4_pic_pu_idx++;
return ret;
}
WORD32 ihevcd_parse_part_mode_amp(cab_ctxt_t *ps_cabac, bitstrm_t *ps_bitstrm)
{
WORD32 ctxt_idx = IHEVC_CAB_PART_MODE;
WORD32 part_mode_idx;
WORD32 part_mode;
WORD32 bin;
part_mode = 0;
TRACE_CABAC_CTXT("part_mode", ps_cabac->u4_range, ctxt_idx);
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx++);
if(!bin)
{
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx++);
part_mode_idx = bin;
part_mode_idx <<= 1;
/* Following takes of handling context increment for 3rd bin in part_mode */
/* When AMP is enabled and the current is not min CB */
/* Context for 3rd bin is 3 and not 2 */
ctxt_idx += 1;
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
part_mode_idx |= bin;
part_mode_idx <<= 1;
if(!bin)
{
bin = ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
part_mode_idx |= bin;
}
part_mode = gau1_part_mode_amp[part_mode_idx];
}
return part_mode;
}
IHEVCD_ERROR_T ihevcd_parse_coding_unit_intra(codec_t *ps_codec,
WORD32 x0,
WORD32 y0,
WORD32 log2_cb_size)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
sps_t *ps_sps;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
WORD32 pcm_flag;
WORD32 value;
WORD32 cb_size = 1 << log2_cb_size;
WORD32 part_mode = ps_codec->s_parse.s_cu.i4_part_mode;
tu_t *ps_tu = ps_codec->s_parse.ps_tu;
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
WORD32 ctb_x_base;
WORD32 ctb_y_base;
ps_sps = ps_codec->s_parse.ps_sps;
ctb_x_base = ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size;
ctb_y_base = ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size;
memset(ps_pu, 0, sizeof(pu_t));
ps_pu->b1_intra_flag = 1;
ps_pu->b4_wd = (cb_size >> 2) - 1;
ps_pu->b4_ht = (cb_size >> 2) - 1;
ps_pu->b4_pos_x = (x0 - ctb_x_base) >> 2;
ps_pu->b4_pos_y = (y0 - ctb_y_base) >> 2;
pcm_flag = 0;
if((PART_2Nx2N == part_mode) && (ps_sps->i1_pcm_enabled_flag)
&& (log2_cb_size
>= ps_sps->i1_log2_min_pcm_coding_block_size)
&& (log2_cb_size
<= (ps_sps->i1_log2_min_pcm_coding_block_size + ps_sps->i1_log2_diff_max_min_pcm_coding_block_size)))
{
TRACE_CABAC_CTXT("pcm_flag", ps_cabac->u4_range, 0);
pcm_flag = ihevcd_cabac_decode_terminate(ps_cabac, ps_bitstrm);
AEV_TRACE("pcm_flag", pcm_flag, ps_cabac->u4_range);
}
ps_codec->s_parse.i4_cu_pcm_flag = pcm_flag;
if(pcm_flag)
{
UWORD8 *pu1_luma_intra_pred_mode_top, *pu1_luma_intra_pred_mode_left;
WORD32 i, num_pred_blocks;
if(ps_codec->s_parse.s_bitstrm.u4_bit_ofst % 8)
{
TRACE_CABAC_CTXT("pcm_alignment_zero_bit", ps_cabac->u4_range, 0);
ihevcd_bits_flush_to_byte_boundary(&ps_codec->s_parse.s_bitstrm);
AEV_TRACE("pcm_alignment_zero_bit", 0, ps_cabac->u4_range);
}
ihevcd_parse_pcm_sample(ps_codec, x0, y0, log2_cb_size);
ihevcd_cabac_reset(&ps_codec->s_parse.s_cabac,
&ps_codec->s_parse.s_bitstrm);
ps_tu = ps_codec->s_parse.ps_tu;
ps_tu->b1_cb_cbf = 1;
ps_tu->b1_cr_cbf = 1;
ps_tu->b1_y_cbf = 1;
ps_tu->b4_pos_x = ((x0 - ctb_x_base) >> 2);
ps_tu->b4_pos_y = ((y0 - ctb_y_base) >> 2);
ps_tu->b1_transquant_bypass = 1;
ps_tu->b3_size = (log2_cb_size - 2);
ps_tu->b7_qp = ps_codec->s_parse.u4_qp;
ps_tu->b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE;
ps_tu->b6_luma_intra_mode = INTRA_PRED_NONE;
/* Set the first TU in CU flag */
{
if((ps_codec->s_parse.s_cu.i4_pos_x << 3) == (ps_tu->b4_pos_x << 2) &&
(ps_codec->s_parse.s_cu.i4_pos_y << 3) == (ps_tu->b4_pos_y << 2))
{
ps_tu->b1_first_tu_in_cu = 1;
}
else
{
ps_tu->b1_first_tu_in_cu = 0;
}
}
/* Update the intra pred mode for PCM to INTRA_DC(default mode) */
pu1_luma_intra_pred_mode_top = ps_codec->s_parse.pu1_luma_intra_pred_mode_top
+ (ps_codec->s_parse.s_cu.i4_pos_x * 2);
pu1_luma_intra_pred_mode_left = ps_codec->s_parse.pu1_luma_intra_pred_mode_left
+ (ps_codec->s_parse.s_cu.i4_pos_y * 2);
num_pred_blocks = 1; /* Because PCM part mode will be 2Nx2N */
ps_codec->s_func_selector.ihevc_memset_fptr(pu1_luma_intra_pred_mode_left, INTRA_DC, (cb_size / num_pred_blocks) / MIN_PU_SIZE);
ps_codec->s_func_selector.ihevc_memset_fptr(pu1_luma_intra_pred_mode_top, INTRA_DC, (cb_size / num_pred_blocks) / MIN_PU_SIZE);
/* Set no_loop_filter appropriately */
if(1 == ps_sps->i1_pcm_loop_filter_disable_flag)
{
UWORD8 *pu1_pic_no_loop_filter_flag;
WORD32 numbytes_row;
UWORD32 u4_mask;
pu1_pic_no_loop_filter_flag = ps_codec->s_parse.pu1_pic_no_loop_filter_flag;
numbytes_row = (ps_sps->i2_pic_width_in_luma_samples + 63) / 64;
pu1_pic_no_loop_filter_flag += (y0 / 8) * numbytes_row;
pu1_pic_no_loop_filter_flag += (x0 / 64);
/* Generate (cb_size / 8) number of 1s */
/* i.e (log2_cb_size - 2) number of 1s */
u4_mask = LSB_ONES((cb_size >> 3));
for(i = 0; i < (cb_size / 8); i++)
{
*pu1_pic_no_loop_filter_flag |= (u4_mask << (((x0) / 8) % 8));
pu1_pic_no_loop_filter_flag += numbytes_row;
}
}
/* Increment ps_tu and tu_idx */
ps_codec->s_parse.ps_tu++;
ps_codec->s_parse.s_cu.i4_tu_cnt++;
ps_codec->s_parse.i4_pic_tu_idx++;
}
else
{
WORD32 cnt = 0;
WORD32 i;
WORD32 part_cnt;
part_cnt = (part_mode == PART_NxN) ? 4 : 1;
for(i = 0; i < part_cnt; i++)
{
TRACE_CABAC_CTXT("prev_intra_pred_luma_flag", ps_cabac->u4_range, IHEVC_CAB_INTRA_LUMA_PRED_FLAG);
value = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
IHEVC_CAB_INTRA_LUMA_PRED_FLAG);
ps_codec->s_parse.s_cu.ai4_prev_intra_luma_pred_flag[i] =
value;
AEV_TRACE("prev_intra_pred_luma_flag", value, ps_cabac->u4_range);
}
for(i = 0; i < part_cnt; i++)
{
if(ps_codec->s_parse.s_cu.ai4_prev_intra_luma_pred_flag[cnt])
{
value = ihevcd_cabac_decode_bypass_bins_tunary(ps_cabac, ps_bitstrm, 2);
AEV_TRACE("mpm_idx", value, ps_cabac->u4_range);
ps_codec->s_parse.s_cu.ai4_mpm_idx[cnt] = value;
}
else
{
value = ihevcd_cabac_decode_bypass_bins(ps_cabac, ps_bitstrm, 5);
AEV_TRACE("rem_intra_luma_pred_mode", value,
ps_cabac->u4_range);
ps_codec->s_parse.s_cu.ai4_rem_intra_luma_pred_mode[cnt] =
value;
}
cnt++;
}
TRACE_CABAC_CTXT("intra_chroma_pred_mode", ps_cabac->u4_range, IHEVC_CAB_CHROMA_PRED_MODE);
value = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
IHEVC_CAB_CHROMA_PRED_MODE);
ps_codec->s_parse.s_cu.i4_intra_chroma_pred_mode_idx = 4;
if(value)
{
ps_codec->s_parse.s_cu.i4_intra_chroma_pred_mode_idx =
ihevcd_cabac_decode_bypass_bins(ps_cabac,
ps_bitstrm, 2);
}
AEV_TRACE("intra_chroma_pred_mode",
ps_codec->s_parse.s_cu.i4_intra_chroma_pred_mode_idx,
ps_cabac->u4_range);
ihevcd_intra_pred_mode_prediction(ps_codec, log2_cb_size, x0, y0);
}
STATS_UPDATE_PU_SIZE(ps_pu);
/* Increment PU pointer */
ps_codec->s_parse.ps_pu++;
ps_codec->s_parse.i4_pic_pu_idx++;
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses coding unit
*
* @par Description:
* Parses coding unit as per Section:7.3.9.5
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_coding_unit(codec_t *ps_codec,
WORD32 x0,
WORD32 y0,
WORD32 log2_cb_size)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
sps_t *ps_sps;
pps_t *ps_pps;
WORD32 cb_size;
slice_header_t *ps_slice_hdr;
WORD32 skip_flag;
WORD32 pcm_flag;
UWORD32 *pu4_skip_top = ps_codec->s_parse.pu4_skip_cu_top;
UWORD32 u4_skip_left = ps_codec->s_parse.u4_skip_cu_left;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
tu_t *ps_tu = ps_codec->s_parse.ps_tu;
WORD32 cu_pos_x;
WORD32 cu_pos_y;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
ASSERT(0 == (x0 % 8));
ASSERT(0 == (y0 % 8));
ps_codec->s_parse.s_cu.i4_tu_cnt = 0;
ps_sps = ps_codec->s_parse.ps_sps;
ps_pps = ps_codec->s_parse.ps_pps;
cu_pos_x = ps_codec->s_parse.s_cu.i4_pos_x;
cu_pos_y = ps_codec->s_parse.s_cu.i4_pos_y;
ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr;
cb_size = 1 << log2_cb_size;
ps_codec->s_parse.s_cu.i4_cu_transquant_bypass = 0;
if(ps_pps->i1_transquant_bypass_enable_flag)
{
TRACE_CABAC_CTXT("cu_transquant_bypass_flag", ps_cabac->u4_range, IHEVC_CAB_CU_TQ_BYPASS_FLAG);
ps_codec->s_parse.s_cu.i4_cu_transquant_bypass =
ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm,
IHEVC_CAB_CU_TQ_BYPASS_FLAG);
/* Update transquant_bypass in ps_tu */
AEV_TRACE("cu_transquant_bypass_flag", ps_codec->s_parse.s_cu.i4_cu_transquant_bypass,
ps_cabac->u4_range);
if(ps_codec->s_parse.s_cu.i4_cu_transquant_bypass)
{
UWORD8 *pu1_pic_no_loop_filter_flag = ps_codec->s_parse.pu1_pic_no_loop_filter_flag;
UWORD32 u4_mask;
WORD32 i;
WORD32 numbytes_row;
numbytes_row = (ps_sps->i2_pic_width_in_luma_samples + 63) / 64;
pu1_pic_no_loop_filter_flag += (y0 / 8) * numbytes_row;
pu1_pic_no_loop_filter_flag += (x0 / 64);
/* Generate (cb_size / 8) number of 1s */
/* i.e (log2_cb_size - 2) number of 1s */
u4_mask = LSB_ONES((cb_size >> 3));
for(i = 0; i < (cb_size / 8); i++)
{
*pu1_pic_no_loop_filter_flag |= (u4_mask << (((x0) / 8) % 8));
pu1_pic_no_loop_filter_flag += numbytes_row;
}
}
}
{
UWORD32 u4_skip_top = 0;
UWORD32 u4_mask;
UWORD32 u4_top_mask, u4_left_mask;
UWORD32 u4_min_cu_x = x0 / 8;
UWORD32 u4_min_cu_y = y0 / 8;
pu4_skip_top += (u4_min_cu_x / 32);
if(ps_slice_hdr->i1_slice_type != ISLICE)
{
WORD32 ctx_idx_inc;
ctx_idx_inc = 0;
if((0 != cu_pos_y) ||
((0 != ps_codec->s_parse.i4_ctb_slice_y) &&
(0 != ps_codec->s_parse.i4_ctb_tile_y)))
{
u4_skip_top = *pu4_skip_top;
u4_skip_top >>= (u4_min_cu_x % 32);
if(u4_skip_top & 1)
ctx_idx_inc++;
}
/*****************************************************************/
/* If cu_pos_x is non-zero then left is available */
/* If cu_pos_x is zero then ensure both the following are true */
/* Current CTB is not the first CTB in a tile row */
/* Current CTB is not the first CTB in a slice */
/*****************************************************************/
if((0 != cu_pos_x) ||
(((0 != ps_codec->s_parse.i4_ctb_slice_x) || (0 != ps_codec->s_parse.i4_ctb_slice_y)) &&
(0 != ps_codec->s_parse.i4_ctb_tile_x)))
{
u4_skip_left >>= (u4_min_cu_y % 32);
if(u4_skip_left & 1)
ctx_idx_inc++;
}
TRACE_CABAC_CTXT("cu_skip_flag", ps_cabac->u4_range, (IHEVC_CAB_SKIP_FLAG + ctx_idx_inc));
skip_flag = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
(IHEVC_CAB_SKIP_FLAG + ctx_idx_inc));
AEV_TRACE("cu_skip_flag", skip_flag, ps_cabac->u4_range);
}
else
skip_flag = 0;
/* Update top skip_flag */
u4_skip_top = *pu4_skip_top;
/* Since Max cb_size is 64, maximum of 8 bits will be set or reset */
/* Also since Coding block will be within 64x64 grid, only 8bits within a WORD32
* need to be updated. These 8 bits will not cross 8 bit boundaries
*/
u4_mask = LSB_ONES(cb_size / 8);
u4_top_mask = u4_mask << (u4_min_cu_x % 32);
if(skip_flag)
{
u4_skip_top |= u4_top_mask;
}
else
{
u4_skip_top &= ~u4_top_mask;
}
*pu4_skip_top = u4_skip_top;
/* Update left skip_flag */
u4_skip_left = ps_codec->s_parse.u4_skip_cu_left;
u4_mask = LSB_ONES(cb_size / 8);
u4_left_mask = u4_mask << (u4_min_cu_y % 32);
if(skip_flag)
{
u4_skip_left |= u4_left_mask;
}
else
{
u4_skip_left &= ~u4_left_mask;
}
ps_codec->s_parse.u4_skip_cu_left = u4_skip_left;
}
ps_codec->s_parse.i4_cu_pcm_flag = 0;
if(skip_flag)
{
WORD32 ctb_x_base;
WORD32 ctb_y_base;
ctb_x_base = ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size;
ctb_y_base = ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size;
ps_tu->b1_cb_cbf = 0;
ps_tu->b1_cr_cbf = 0;
ps_tu->b1_y_cbf = 0;
ps_tu->b4_pos_x = ((x0 - ctb_x_base) >> 2);
ps_tu->b4_pos_y = ((y0 - ctb_y_base) >> 2);
ps_tu->b1_transquant_bypass = 0;
ps_tu->b3_size = (log2_cb_size - 2);
ps_tu->b7_qp = ps_codec->s_parse.u4_qp;
ps_tu->b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE;
ps_tu->b6_luma_intra_mode = INTRA_PRED_NONE;
/* Set the first TU in CU flag */
{
if((ps_codec->s_parse.s_cu.i4_pos_x << 3) == (ps_tu->b4_pos_x << 2) &&
(ps_codec->s_parse.s_cu.i4_pos_y << 3) == (ps_tu->b4_pos_y << 2))
{
ps_tu->b1_first_tu_in_cu = 1;
}
else
{
ps_tu->b1_first_tu_in_cu = 0;
}
}
ps_codec->s_parse.ps_tu++;
ps_codec->s_parse.s_cu.i4_tu_cnt++;
ps_codec->s_parse.i4_pic_tu_idx++;
ps_codec->s_parse.s_cu.i4_pred_mode = PRED_MODE_SKIP;
ps_codec->s_parse.s_cu.i4_part_mode = PART_2Nx2N;
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ps_pu->b2_part_idx = 0;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size, cb_size);
STATS_UPDATE_PU_SKIP_SIZE(ps_pu);
}
}
else
{
WORD32 pred_mode;
WORD32 part_mode;
WORD32 intra_split_flag;
WORD32 is_mincb;
cb_size = (1 << log2_cb_size);
is_mincb = (cb_size == (1 << ps_sps->i1_log2_min_coding_block_size));
pcm_flag = 0;
if(ps_slice_hdr->i1_slice_type != ISLICE)
{
TRACE_CABAC_CTXT("pred_mode_flag", ps_cabac->u4_range, IHEVC_CAB_PRED_MODE);
pred_mode = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
IHEVC_CAB_PRED_MODE);
AEV_TRACE("pred_mode_flag", pred_mode, ps_cabac->u4_range);
}
else
{
pred_mode = PRED_MODE_INTRA;
}
/* If current CU is intra then set corresponging bit in picture level intra map */
if(PRED_MODE_INTRA == pred_mode)
{
UWORD8 *pu1_pic_intra_flag = ps_codec->s_parse.pu1_pic_intra_flag;
UWORD32 u4_mask;
WORD32 i;
WORD32 numbytes_row;
numbytes_row = (ps_sps->i2_pic_width_in_luma_samples + 63) / 64;
pu1_pic_intra_flag += (y0 / 8) * numbytes_row;
pu1_pic_intra_flag += (x0 / 64);
/* Generate (cb_size / 8) number of 1s */
/* i.e (log2_cb_size - 2) number of 1s */
u4_mask = LSB_ONES((cb_size >> 3));
for(i = 0; i < (cb_size / 8); i++)
{
*pu1_pic_intra_flag |= (u4_mask << (((x0) / 8) % 8));
pu1_pic_intra_flag += numbytes_row;
}
}
ps_codec->s_parse.s_cu.i4_pred_mode = pred_mode;
intra_split_flag = 0;
if((PRED_MODE_INTRA != pred_mode) ||
is_mincb)
{
UWORD32 bin;
if(PRED_MODE_INTRA == pred_mode)
{
TRACE_CABAC_CTXT("part_mode", ps_cabac->u4_range, IHEVC_CAB_PART_MODE);
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, IHEVC_CAB_PART_MODE);
part_mode = (bin) ? PART_2Nx2N : PART_NxN;
}
else
{
WORD32 amp_enabled = ps_sps->i1_amp_enabled_flag;
UWORD32 u4_max_bin_cnt = 0;
if(amp_enabled && !is_mincb)
{
part_mode = ihevcd_parse_part_mode_amp(ps_cabac, ps_bitstrm);
}
else
{
WORD32 ctxt_inc = IHEVC_CAB_PART_MODE;
u4_max_bin_cnt = 2;
if((is_mincb) && (cb_size > 8))
{
u4_max_bin_cnt++;
}
part_mode = -1;
TRACE_CABAC_CTXT("part_mode", ps_cabac->u4_range, IHEVC_CAB_PART_MODE);
do
{
bin = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm,
ctxt_inc++);
part_mode++;
}while(--u4_max_bin_cnt && !bin);
/* If the last bin was zero, then increment part mode by 1 */
if(!bin)
part_mode++;
}
}
AEV_TRACE("part_mode", part_mode, ps_cabac->u4_range);
}
else
{
part_mode = 0;
intra_split_flag = 0;
}
ps_codec->s_parse.s_cu.i4_part_mode = part_mode;
if((PRED_MODE_INTRA == ps_codec->s_parse.s_cu.i4_pred_mode) &&
(PART_NxN == ps_codec->s_parse.s_cu.i4_part_mode))
{
intra_split_flag = 1;
}
ps_codec->s_parse.s_cu.i4_part_mode = part_mode;
ps_codec->s_parse.s_cu.i4_intra_split_flag = intra_split_flag;
if(pred_mode == PRED_MODE_INTRA)
{
ps_codec->s_parse.i4_cu_pcm_flag = 0;
ihevcd_parse_coding_unit_intra(ps_codec, x0, y0, log2_cb_size);
pcm_flag = ps_codec->s_parse.i4_cu_pcm_flag;
}
else
{
if(part_mode == PART_2Nx2N)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size, cb_size);
ps_pu->b2_part_idx = 0;
}
else if(part_mode == PART_2NxN)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size, cb_size / 2);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0 + (cb_size / 2), cb_size, cb_size / 2);
ps_pu->b2_part_idx = 1;
}
else if(part_mode == PART_Nx2N)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size / 2, cb_size);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0 + (cb_size / 2), y0, cb_size / 2, cb_size);
ps_pu->b2_part_idx = 1;
}
else if(part_mode == PART_2NxnU)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size, cb_size / 4);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0 + (cb_size / 4), cb_size, cb_size * 3 / 4);
ps_pu->b2_part_idx = 1;
}
else if(part_mode == PART_2NxnD)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size, cb_size * 3 / 4);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0 + (cb_size * 3 / 4), cb_size, cb_size / 4);
ps_pu->b2_part_idx = 1;
}
else if(part_mode == PART_nLx2N)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size / 4, cb_size);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0 + (cb_size / 4), y0, cb_size * 3 / 4, cb_size);
ps_pu->b2_part_idx = 1;
}
else if(part_mode == PART_nRx2N)
{
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size * 3 / 4, cb_size);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0 + (cb_size * 3 / 4), y0, cb_size / 4, cb_size);
ps_pu->b2_part_idx = 1;
}
else
{ /* PART_NxN */
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0, cb_size / 2, cb_size / 2);
ps_pu->b2_part_idx = 0;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0 + (cb_size / 2), y0, cb_size / 2, cb_size / 2);
ps_pu->b2_part_idx = 1;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0, y0 + (cb_size / 2), cb_size / 2, cb_size / 2);
ps_pu->b2_part_idx = 2;
ps_pu = ps_codec->s_parse.ps_pu;
ihevcd_parse_prediction_unit(ps_codec, x0 + (cb_size / 2), y0 + (cb_size / 2), cb_size / 2, cb_size / 2);
ps_pu->b2_part_idx = 3;
}
}
if(!pcm_flag)
{
WORD32 no_residual_syntax_flag = 0;
pu_t *ps_pu;
/* Since ps_pu is incremented for each PU parsed, decrement by 1 to
* access last decoded PU
*/
ps_pu = ps_codec->s_parse.ps_pu - 1;
if((PRED_MODE_INTRA != pred_mode) &&
(!((part_mode == PART_2Nx2N) && ps_pu->b1_merge_flag)))
{
TRACE_CABAC_CTXT("rqt_root_cbf", ps_cabac->u4_range, IHEVC_CAB_NORES_IDX);
no_residual_syntax_flag = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
IHEVC_CAB_NORES_IDX);
AEV_TRACE("rqt_root_cbf", no_residual_syntax_flag,
ps_cabac->u4_range);
/* TODO: HACK FOR COMPLIANCE WITH HM REFERENCE DECODER */
/*********************************************************/
/* currently the HM decoder expects qtroot cbf instead of */
/* no_residue_flag which has opposite meaning */
/* This will be fixed once the software / spec is fixed */
/*********************************************************/
no_residual_syntax_flag = 1 - no_residual_syntax_flag;
}
if(!no_residual_syntax_flag)
{
ps_codec->s_parse.s_cu.i4_max_trafo_depth = (pred_mode == PRED_MODE_INTRA) ?
(ps_sps->i1_max_transform_hierarchy_depth_intra + intra_split_flag) :
(ps_sps->i1_max_transform_hierarchy_depth_inter);
ihevcd_parse_transform_tree(ps_codec, x0, y0, x0, y0,
log2_cb_size, 0, 0,
ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[0]);
}
else
{
WORD32 ctb_x_base;
WORD32 ctb_y_base;
ctb_x_base = ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size;
ctb_y_base = ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size;
ps_tu = ps_codec->s_parse.ps_tu;
ps_tu->b1_cb_cbf = 0;
ps_tu->b1_cr_cbf = 0;
ps_tu->b1_y_cbf = 0;
ps_tu->b4_pos_x = ((x0 - ctb_x_base) >> 2);
ps_tu->b4_pos_y = ((y0 - ctb_y_base) >> 2);
ps_tu->b1_transquant_bypass = 0;
ps_tu->b3_size = (log2_cb_size - 2);
ps_tu->b7_qp = ps_codec->s_parse.u4_qp;
ps_tu->b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE;
ps_tu->b6_luma_intra_mode = ps_codec->s_parse.s_cu.ai4_intra_luma_pred_mode[0];
/* Set the first TU in CU flag */
{
if((ps_codec->s_parse.s_cu.i4_pos_x << 3) == (ps_tu->b4_pos_x << 2) &&
(ps_codec->s_parse.s_cu.i4_pos_y << 3) == (ps_tu->b4_pos_y << 2))
{
ps_tu->b1_first_tu_in_cu = 1;
}
else
{
ps_tu->b1_first_tu_in_cu = 0;
}
}
ps_codec->s_parse.ps_tu++;
ps_codec->s_parse.s_cu.i4_tu_cnt++;
ps_codec->s_parse.i4_pic_tu_idx++;
}
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Coding Quad Tree
*
* @par Description:
* Parses Coding Quad Tree as per Section:7.3.9.4
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_coding_quadtree(codec_t *ps_codec,
WORD32 x0,
WORD32 y0,
WORD32 log2_cb_size,
WORD32 ct_depth)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
sps_t *ps_sps;
pps_t *ps_pps;
WORD32 split_cu_flag;
WORD32 x1, y1;
WORD32 cu_pos_x;
WORD32 cu_pos_y;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
WORD32 cb_size = 1 << log2_cb_size;
ps_sps = ps_codec->s_parse.ps_sps;
ps_pps = ps_codec->s_parse.ps_pps;
/* Compute CU position with respect to current CTB in (8x8) units */
cu_pos_x = (x0 - (ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size)) >> 3;
cu_pos_y = (y0 - (ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size)) >> 3;
ps_codec->s_parse.s_cu.i4_pos_x = cu_pos_x;
ps_codec->s_parse.s_cu.i4_pos_y = cu_pos_y;
ps_codec->s_parse.s_cu.i4_log2_cb_size = log2_cb_size;
ps_codec->s_parse.i4_ct_depth = ct_depth;
{
UWORD32 *pu4_ct_depth_top = ps_codec->s_parse.pu4_ct_depth_top;
UWORD32 u4_ct_depth_left = ps_codec->s_parse.u4_ct_depth_left;
UWORD32 u4_ct_depth_top = 0;
UWORD32 u4_mask;
UWORD32 u4_top_mask, u4_left_mask;
WORD32 ctxt_idx;
UWORD32 u4_min_cu_x = x0 / 8;
UWORD32 u4_min_cu_y = y0 / 8;
pu4_ct_depth_top += (u4_min_cu_x / 16);
if(((x0 + (1 << log2_cb_size)) <= ps_sps->i2_pic_width_in_luma_samples) &&
((y0 + (1 << log2_cb_size)) <= ps_sps->i2_pic_height_in_luma_samples) &&
(log2_cb_size > ps_sps->i1_log2_min_coding_block_size))
{
ctxt_idx = IHEVC_CAB_SPLIT_CU_FLAG;
/* Split cu context increment is decided based on left and top Coding tree
* depth which is stored at frame level
*/
/* Check if the CTB is in first row in the current slice or tile */
if((0 != cu_pos_y) ||
((0 != ps_codec->s_parse.i4_ctb_slice_y) &&
(0 != ps_codec->s_parse.i4_ctb_tile_y)))
{
u4_ct_depth_top = *pu4_ct_depth_top;
u4_ct_depth_top >>= ((u4_min_cu_x % 16) * 2);
u4_ct_depth_top &= 3;
if((WORD32)u4_ct_depth_top > ct_depth)
ctxt_idx++;
}
/* Check if the CTB is in first column in the current slice or tile */
/*****************************************************************/
/* If cu_pos_x is non-zero then left is available */
/* If cu_pos_x is zero then ensure both the following are true */
/* Current CTB is not the first CTB in a tile row */
/* Current CTB is not the first CTB in a slice */
/*****************************************************************/
if((0 != cu_pos_x) ||
(((0 != ps_codec->s_parse.i4_ctb_slice_x) || (0 != ps_codec->s_parse.i4_ctb_slice_y)) &&
(0 != ps_codec->s_parse.i4_ctb_tile_x)))
{
u4_ct_depth_left >>= ((u4_min_cu_y % 16) * 2);
u4_ct_depth_left &= 3;
if((WORD32)u4_ct_depth_left > ct_depth)
ctxt_idx++;
}
TRACE_CABAC_CTXT("split_cu_flag", ps_cabac->u4_range, ctxt_idx);
split_cu_flag = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
AEV_TRACE("split_cu_flag", split_cu_flag, ps_cabac->u4_range);
}
else
{
if(log2_cb_size > ps_sps->i1_log2_min_coding_block_size)
split_cu_flag = 1;
else
split_cu_flag = 0;
}
if(0 == split_cu_flag)
{
/* Update top ct_depth */
u4_ct_depth_top = *pu4_ct_depth_top;
/* Since Max cb_size is 64, maximum of 8 bits will be set or reset */
/* Also since Coding block will be within 64x64 grid, only 8bits within a WORD32
* need to be updated. These 8 bits will not cross 8 bit boundaries
*/
u4_mask = DUP_LSB_11(cb_size / 8);
u4_top_mask = u4_mask << ((u4_min_cu_x % 16) * 2);
u4_ct_depth_top &= ~u4_top_mask;
if(ct_depth)
{
u4_top_mask = gau4_ct_depth_mask[ct_depth] & u4_mask;
u4_top_mask = u4_top_mask << ((u4_min_cu_x % 16) * 2);
u4_ct_depth_top |= u4_top_mask;
}
*pu4_ct_depth_top = u4_ct_depth_top;
/* Update left ct_depth */
u4_ct_depth_left = ps_codec->s_parse.u4_ct_depth_left;
u4_left_mask = u4_mask << ((u4_min_cu_y % 16) * 2);
u4_ct_depth_left &= ~u4_left_mask;
if(ct_depth)
{
u4_left_mask = gau4_ct_depth_mask[ct_depth] & u4_mask;
u4_left_mask = u4_left_mask << ((u4_min_cu_y % 16) * 2);
u4_ct_depth_left |= u4_left_mask;
}
ps_codec->s_parse.u4_ct_depth_left = u4_ct_depth_left;
}
}
if((ps_pps->i1_cu_qp_delta_enabled_flag) &&
(log2_cb_size >= ps_pps->i1_log2_min_cu_qp_delta_size))
{
ps_codec->s_parse.i4_is_cu_qp_delta_coded = 0;
ps_codec->s_parse.i4_cu_qp_delta = 0;
}
if(split_cu_flag)
{
x1 = x0 + ((1 << log2_cb_size) >> 1);
y1 = y0 + ((1 << log2_cb_size) >> 1);
ihevcd_parse_coding_quadtree(ps_codec, x0, y0, log2_cb_size - 1, ct_depth + 1);
/* At frame boundaries coding quadtree nodes are sent only if they fall within the frame */
if(x1 < ps_sps->i2_pic_width_in_luma_samples)
ihevcd_parse_coding_quadtree(ps_codec, x1, y0, log2_cb_size - 1, ct_depth + 1);
if(y1 < ps_sps->i2_pic_height_in_luma_samples)
ihevcd_parse_coding_quadtree(ps_codec, x0, y1, log2_cb_size - 1, ct_depth + 1);
if((x1 < ps_sps->i2_pic_width_in_luma_samples) &&
(y1 < ps_sps->i2_pic_height_in_luma_samples))
ihevcd_parse_coding_quadtree(ps_codec, x1, y1, log2_cb_size - 1, ct_depth + 1);
}
else
{
/* Set current group QP if current CU is aligned with the group */
{
WORD32 cu_pos_x = ps_codec->s_parse.s_cu.i4_pos_x << 3;
WORD32 cu_pos_y = ps_codec->s_parse.s_cu.i4_pos_y << 3;
WORD32 qpg_x = (cu_pos_x - (cu_pos_x & ((1 << ps_pps->i1_log2_min_cu_qp_delta_size) - 1)));
WORD32 qpg_y = (cu_pos_y - (cu_pos_y & ((1 << ps_pps->i1_log2_min_cu_qp_delta_size) - 1)));
if((cu_pos_x == qpg_x) &&
(cu_pos_y == qpg_y))
{
ps_codec->s_parse.u4_qpg = ps_codec->s_parse.u4_qp;
ps_codec->s_parse.s_cu.i4_cu_qp_delta = 0;
}
}
ihevcd_parse_coding_unit(ps_codec, x0, y0, log2_cb_size);
if(ps_pps->i1_cu_qp_delta_enabled_flag)
{
WORD32 qp_pred, qp_left, qp_top;
WORD32 cu_pos_x;
WORD32 cu_pos_y;
WORD32 qpg_x;
WORD32 qpg_y;
WORD32 i, j;
WORD32 qp;
WORD32 cur_cu_offset;
tu_t *ps_tu = ps_codec->s_parse.ps_tu;
WORD32 cb_size = 1 << ps_codec->s_parse.s_cu.i4_log2_cb_size;
cu_pos_x = ps_codec->s_parse.s_cu.i4_pos_x << 3;
cu_pos_y = ps_codec->s_parse.s_cu.i4_pos_y << 3;
qpg_x = (cu_pos_x - (cu_pos_x & ((1 << ps_pps->i1_log2_min_cu_qp_delta_size) - 1))) >> 3;
qpg_y = (cu_pos_y - (cu_pos_y & ((1 << ps_pps->i1_log2_min_cu_qp_delta_size) - 1))) >> 3;
/*previous coded Qp*/
qp_left = ps_codec->s_parse.u4_qpg;
qp_top = ps_codec->s_parse.u4_qpg;
if(qpg_x > 0)
{
qp_left = ps_codec->s_parse.ai1_8x8_cu_qp[qpg_x - 1 + (qpg_y * 8)];
}
if(qpg_y > 0)
{
qp_top = ps_codec->s_parse.ai1_8x8_cu_qp[qpg_x + ((qpg_y - 1) * 8)];
}
qp_pred = (qp_left + qp_top + 1) >> 1;
/* Since qp_pred + ps_codec->s_parse.s_cu.i4_cu_qp_delta can be negative,
52 is added before taking modulo 52 */
qp = (qp_pred + ps_codec->s_parse.s_cu.i4_cu_qp_delta + 52) % 52;
cur_cu_offset = (cu_pos_x >> 3) + cu_pos_y;
for(i = 0; i < (cb_size >> 3); i++)
{
for(j = 0; j < (cb_size >> 3); j++)
{
ps_codec->s_parse.ai1_8x8_cu_qp[cur_cu_offset + (i * 8) + j] = qp;
}
}
ps_codec->s_parse.u4_qp = qp;
ps_codec->s_parse.s_cu.i4_qp = qp;
/* When change in QP is signaled, update the QP in TUs that are already parsed in the CU */
{
tu_t *ps_tu_tmp;
ps_tu_tmp = ps_tu - ps_codec->s_parse.s_cu.i4_tu_cnt;
ps_tu->b7_qp = ps_codec->s_parse.u4_qp;
while(ps_tu_tmp != ps_tu)
{
ps_tu_tmp->b7_qp = ps_codec->s_parse.u4_qp;
ps_tu_tmp++;
}
}
if(ps_codec->s_parse.s_cu.i4_cu_qp_delta)
{
WORD32 ctb_indx;
ctb_indx = ps_codec->s_parse.i4_ctb_x + ps_sps->i2_pic_wd_in_ctb * ps_codec->s_parse.i4_ctb_y;
ps_codec->s_parse.s_bs_ctxt.pu1_pic_qp_const_in_ctb[ctb_indx >> 3] &= (~(1 << (ctb_indx & 7)));
}
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses SAO (Sample adaptive offset syntax)
*
* @par Description:
* Parses SAO (Sample adaptive offset syntax) as per Section:7.3.9.3
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_sao(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
sps_t *ps_sps;
sao_t *ps_sao;
WORD32 rx;
WORD32 ry;
WORD32 value;
bitstrm_t *ps_bitstrm = &ps_codec->s_parse.s_bitstrm;
WORD32 sao_merge_left_flag;
WORD32 sao_merge_up_flag;
slice_header_t *ps_slice_hdr;
cab_ctxt_t *ps_cabac = &ps_codec->s_parse.s_cabac;
WORD32 ctxt_idx;
ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr_base;
ps_slice_hdr += (ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1));
ps_sps = (ps_codec->s_parse.ps_sps);
rx = ps_codec->s_parse.i4_ctb_x;
ry = ps_codec->s_parse.i4_ctb_y;
ps_sao = ps_codec->s_parse.ps_pic_sao + rx + ry * ps_sps->i2_pic_wd_in_ctb;
/* Default values */
ps_sao->b3_y_type_idx = 0;
ps_sao->b3_cb_type_idx = 0;
ps_sao->b3_cr_type_idx = 0;
UNUSED(value);
ctxt_idx = IHEVC_CAB_SAO_MERGE;
sao_merge_left_flag = 0;
sao_merge_up_flag = 0;
if(rx > 0)
{
/*TODO:Implemented only for slice. condition for tile is not tested*/
if(((0 != ps_codec->s_parse.i4_ctb_slice_x) || (0 != ps_codec->s_parse.i4_ctb_slice_y)) &&
(0 != ps_codec->s_parse.i4_ctb_tile_x))
{
TRACE_CABAC_CTXT("sao_merge_flag", ps_cabac->u4_range, ctxt_idx);
sao_merge_left_flag = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
ctxt_idx);
AEV_TRACE("sao_merge_flag", sao_merge_left_flag, ps_cabac->u4_range);
}
}
if(ry > 0 && !sao_merge_left_flag)
{
if((ps_codec->s_parse.i4_ctb_slice_y > 0) && (ps_codec->s_parse.i4_ctb_tile_y > 0))
{
TRACE_CABAC_CTXT("sao_merge_flag", ps_cabac->u4_range, ctxt_idx);
sao_merge_up_flag = ihevcd_cabac_decode_bin(ps_cabac,
ps_bitstrm,
ctxt_idx);
AEV_TRACE("sao_merge_flag", sao_merge_up_flag, ps_cabac->u4_range);
}
}
ctxt_idx = IHEVC_CAB_SAO_TYPE;
if(sao_merge_left_flag)
{
*ps_sao = *(ps_sao - 1);
}
else if(sao_merge_up_flag)
{
*ps_sao = *(ps_sao - ps_sps->i2_pic_wd_in_ctb);
}
else // if(!sao_merge_up_flag && !sao_merge_left_flag)
{
WORD32 c_idx;
WORD32 sao_type_idx = 0;
for(c_idx = 0; c_idx < 3; c_idx++)
{
if((ps_slice_hdr->i1_slice_sao_luma_flag && c_idx == 0) || (ps_slice_hdr->i1_slice_sao_chroma_flag && c_idx > 0))
{
/* sao_type_idx will be same for c_idx == 1 and c_idx == 2 - hence not initialized to zero for c_idx == 2*/
if(c_idx == 0)
{
sao_type_idx = 0;
TRACE_CABAC_CTXT("sao_type_idx", ps_cabac->u4_range, ctxt_idx);
sao_type_idx = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
if(sao_type_idx)
{
sao_type_idx += ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
}
AEV_TRACE("sao_type_idx", sao_type_idx, ps_cabac->u4_range);
ps_sao->b3_y_type_idx = sao_type_idx;
}
if(c_idx == 1)
{
sao_type_idx = 0;
TRACE_CABAC_CTXT("sao_type_idx", ps_cabac->u4_range, ctxt_idx);
sao_type_idx = ihevcd_cabac_decode_bin(ps_cabac, ps_bitstrm, ctxt_idx);
if(sao_type_idx)
{
sao_type_idx += ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
}
AEV_TRACE("sao_type_idx", sao_type_idx, ps_cabac->u4_range);
ps_sao->b3_cb_type_idx = sao_type_idx;
ps_sao->b3_cr_type_idx = sao_type_idx;
}
if(sao_type_idx != 0)
{
WORD32 i;
WORD32 sao_offset[4];
WORD32 sao_band_position = 0;
WORD32 c_max = (1 << (MIN(BIT_DEPTH, 10) - 5)) - 1;
for(i = 0; i < 4; i++)
{
sao_offset[i] = ihevcd_cabac_decode_bypass_bins_tunary(ps_cabac, ps_bitstrm, c_max);
AEV_TRACE("sao_offset_abs", sao_offset[i], ps_cabac->u4_range);
if((2 == sao_type_idx) && (i > 1))
{
sao_offset[i] = -sao_offset[i];
}
}
if(sao_type_idx == 1)
{
for(i = 0; i < 4; i++)
{
if(sao_offset[i] != 0)
{
value = ihevcd_cabac_decode_bypass_bin(ps_cabac, ps_bitstrm);
AEV_TRACE("sao_offset_sign", value, ps_cabac->u4_range);
if(value)
{
sao_offset[i] = -sao_offset[i];
}
}
}
value = ihevcd_cabac_decode_bypass_bins(ps_cabac, ps_bitstrm, 5);
AEV_TRACE("sao_band_position", value, ps_cabac->u4_range);
sao_band_position = value;
}
else
{
if(c_idx == 0)
{
value = ihevcd_cabac_decode_bypass_bins(ps_cabac, ps_bitstrm, 2);
AEV_TRACE("sao_eo_class", value, ps_cabac->u4_range);
ps_sao->b3_y_type_idx += value;
}
if(c_idx == 1)
{
value = ihevcd_cabac_decode_bypass_bins(ps_cabac, ps_bitstrm, 2);
AEV_TRACE("sao_eo_class", value, ps_cabac->u4_range);
ps_sao->b3_cb_type_idx += value;
ps_sao->b3_cr_type_idx += value;
}
}
if(0 == c_idx)
{
ps_sao->b4_y_offset_1 = sao_offset[0];
ps_sao->b4_y_offset_2 = sao_offset[1];
ps_sao->b4_y_offset_3 = sao_offset[2];
ps_sao->b4_y_offset_4 = sao_offset[3];
ps_sao->b5_y_band_pos = sao_band_position;
}
else if(1 == c_idx)
{
ps_sao->b4_cb_offset_1 = sao_offset[0];
ps_sao->b4_cb_offset_2 = sao_offset[1];
ps_sao->b4_cb_offset_3 = sao_offset[2];
ps_sao->b4_cb_offset_4 = sao_offset[3];
ps_sao->b5_cb_band_pos = sao_band_position;
}
else // 2 == c_idx
{
ps_sao->b4_cr_offset_1 = sao_offset[0];
ps_sao->b4_cr_offset_2 = sao_offset[1];
ps_sao->b4_cr_offset_3 = sao_offset[2];
ps_sao->b4_cr_offset_4 = sao_offset[3];
ps_sao->b5_cr_band_pos = sao_band_position;
}
}
}
}
}
return ret;
}
/**
*******************************************************************************
*
* @brief
* Parses Slice data syntax
*
* @par Description:
* Parses Slice data syntax as per Section:7.3.9.1
*
* @param[in] ps_codec
* Pointer to codec context
*
* @returns Error from IHEVCD_ERROR_T
*
* @remarks
*
*
*******************************************************************************
*/
IHEVCD_ERROR_T ihevcd_parse_slice_data(codec_t *ps_codec)
{
IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
WORD32 end_of_slice_flag;
sps_t *ps_sps;
pps_t *ps_pps;
slice_header_t *ps_slice_hdr;
WORD32 end_of_pic;
tile_t *ps_tile, *ps_tile_prev;
WORD32 i;
WORD32 ctb_addr;
WORD32 tile_idx;
WORD32 cabac_init_idc;
WORD32 ctb_size;
WORD32 num_ctb_in_row;
WORD32 num_min4x4_in_ctb;
WORD32 slice_qp;
WORD32 slice_start_ctb_idx;
WORD32 tile_start_ctb_idx;
ps_slice_hdr = ps_codec->s_parse.ps_slice_hdr_base;
ps_pps = ps_codec->s_parse.ps_pps_base;
ps_sps = ps_codec->s_parse.ps_sps_base;
/* Get current slice header, pps and sps */
ps_slice_hdr += (ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1));
ps_pps += ps_slice_hdr->i1_pps_id;
ps_sps += ps_pps->i1_sps_id;
if(0 != ps_codec->s_parse.i4_cur_slice_idx)
{
if(!ps_slice_hdr->i1_dependent_slice_flag)
{
ps_codec->s_parse.i4_cur_independent_slice_idx =
ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1);
}
}
ctb_size = 1 << ps_sps->i1_log2_ctb_size;
num_min4x4_in_ctb = (ctb_size / 4) * (ctb_size / 4);
num_ctb_in_row = ps_sps->i2_pic_wd_in_ctb;
/* Update the parse context */
if(0 == ps_codec->i4_slice_error)
{
ps_codec->s_parse.i4_ctb_x = ps_slice_hdr->i2_ctb_x;
ps_codec->s_parse.i4_ctb_y = ps_slice_hdr->i2_ctb_y;
}
ps_codec->s_parse.ps_pps = ps_pps;
ps_codec->s_parse.ps_sps = ps_sps;
ps_codec->s_parse.ps_slice_hdr = ps_slice_hdr;
/* Derive Tile positions for the current CTB */
/* Change this to lookup if required */
ihevcd_get_tile_pos(ps_pps, ps_sps, ps_codec->s_parse.i4_ctb_x,
ps_codec->s_parse.i4_ctb_y,
&ps_codec->s_parse.i4_ctb_tile_x,
&ps_codec->s_parse.i4_ctb_tile_y,
&tile_idx);
ps_codec->s_parse.ps_tile = ps_pps->ps_tile + tile_idx;
ps_codec->s_parse.i4_cur_tile_idx = tile_idx;
ps_tile = ps_codec->s_parse.ps_tile;
if(tile_idx)
ps_tile_prev = ps_tile - 1;
else
ps_tile_prev = ps_tile;
/* If the present slice is dependent, then store the previous
* independent slices' ctb x and y values for decoding process */
if(0 == ps_codec->i4_slice_error)
{
if(1 == ps_slice_hdr->i1_dependent_slice_flag)
{
/*If slice is present at the start of a new tile*/
if((0 == ps_codec->s_parse.i4_ctb_tile_x) && (0 == ps_codec->s_parse.i4_ctb_tile_y))
{
ps_codec->s_parse.i4_ctb_slice_x = 0;
ps_codec->s_parse.i4_ctb_slice_y = 0;
}
}
if(!ps_slice_hdr->i1_dependent_slice_flag)
{
ps_codec->s_parse.i4_ctb_slice_x = 0;
ps_codec->s_parse.i4_ctb_slice_y = 0;
}
}
/* Frame level initializations */
if((0 == ps_codec->s_parse.i4_ctb_y) &&
(0 == ps_codec->s_parse.i4_ctb_x))
{
ret = ihevcd_parse_pic_init(ps_codec);
RETURN_IF((ret != (IHEVCD_ERROR_T)IHEVCD_SUCCESS), ret);
ps_codec->s_parse.pu4_pic_tu_idx[0] = 0;
ps_codec->s_parse.pu4_pic_pu_idx[0] = 0;
ps_codec->s_parse.i4_cur_independent_slice_idx = 0;
ps_codec->s_parse.i4_ctb_tile_x = 0;
ps_codec->s_parse.i4_ctb_tile_y = 0;
}
{
/* Updating the poc list of current slice to ps_mv_buf */
mv_buf_t *ps_mv_buf = ps_codec->s_parse.ps_cur_mv_buf;
if(ps_slice_hdr->i1_num_ref_idx_l1_active != 0)
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
{
ps_mv_buf->ai4_l1_collocated_poc[(ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1))][i] = ((pic_buf_t *)ps_slice_hdr->as_ref_pic_list1[i].pv_pic_buf)->i4_abs_poc;
ps_mv_buf->ai1_l1_collocated_poc_lt[(ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1))][i] = ((pic_buf_t *)ps_slice_hdr->as_ref_pic_list1[i].pv_pic_buf)->u1_used_as_ref;
}
}
if(ps_slice_hdr->i1_num_ref_idx_l0_active != 0)
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
{
ps_mv_buf->ai4_l0_collocated_poc[(ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1))][i] = ((pic_buf_t *)ps_slice_hdr->as_ref_pic_list0[i].pv_pic_buf)->i4_abs_poc;
ps_mv_buf->ai1_l0_collocated_poc_lt[(ps_codec->s_parse.i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1))][i] = ((pic_buf_t *)ps_slice_hdr->as_ref_pic_list0[i].pv_pic_buf)->u1_used_as_ref;
}
}
}
/*Initialize the low delay flag at the beginning of every slice*/
if((0 == ps_codec->s_parse.i4_ctb_slice_x) || (0 == ps_codec->s_parse.i4_ctb_slice_y))
{
/* Lowdelay flag */
WORD32 cur_poc, ref_list_poc, flag = 1;
cur_poc = ps_slice_hdr->i4_abs_pic_order_cnt;
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l0_active; i++)
{
ref_list_poc = ((mv_buf_t *)ps_slice_hdr->as_ref_pic_list0[i].pv_mv_buf)->i4_abs_poc;
if(ref_list_poc > cur_poc)
{
flag = 0;
break;
}
}
if(flag && (ps_slice_hdr->i1_slice_type == BSLICE))
{
for(i = 0; i < ps_slice_hdr->i1_num_ref_idx_l1_active; i++)
{
ref_list_poc = ((mv_buf_t *)ps_slice_hdr->as_ref_pic_list1[i].pv_mv_buf)->i4_abs_poc;
if(ref_list_poc > cur_poc)
{
flag = 0;
break;
}
}
}
ps_slice_hdr->i1_low_delay_flag = flag;
}
/* initialize the cabac init idc based on slice type */
if(ps_slice_hdr->i1_slice_type == ISLICE)
{
cabac_init_idc = 0;
}
else if(ps_slice_hdr->i1_slice_type == PSLICE)
{
cabac_init_idc = ps_slice_hdr->i1_cabac_init_flag ? 2 : 1;
}
else
{
cabac_init_idc = ps_slice_hdr->i1_cabac_init_flag ? 1 : 2;
}
slice_qp = ps_slice_hdr->i1_slice_qp_delta + ps_pps->i1_pic_init_qp;
slice_qp = CLIP3(slice_qp, 0, 51);
/*Update QP value for every indepndent slice or for every dependent slice that begins at the start of a new tile*/
if((0 == ps_slice_hdr->i1_dependent_slice_flag) ||
((1 == ps_slice_hdr->i1_dependent_slice_flag) && ((0 == ps_codec->s_parse.i4_ctb_tile_x) && (0 == ps_codec->s_parse.i4_ctb_tile_y))))
{
ps_codec->s_parse.u4_qp = slice_qp;
}
/*Cabac init at the beginning of a slice*/
//If the slice is a dependent slice, not present at the start of a tile
if((1 == ps_slice_hdr->i1_dependent_slice_flag) && (!((ps_codec->s_parse.i4_ctb_tile_x == 0) && (ps_codec->s_parse.i4_ctb_tile_y == 0))))
{
if((0 == ps_pps->i1_entropy_coding_sync_enabled_flag) || (ps_pps->i1_entropy_coding_sync_enabled_flag && (0 != ps_codec->s_parse.i4_ctb_x)))
{
ihevcd_cabac_reset(&ps_codec->s_parse.s_cabac,
&ps_codec->s_parse.s_bitstrm);
}
}
else if((0 == ps_pps->i1_entropy_coding_sync_enabled_flag) || (ps_pps->i1_entropy_coding_sync_enabled_flag && (0 != ps_codec->s_parse.i4_ctb_x)))
{
ihevcd_cabac_init(&ps_codec->s_parse.s_cabac,
&ps_codec->s_parse.s_bitstrm,
slice_qp,
cabac_init_idc,
&gau1_ihevc_cab_ctxts[cabac_init_idc][slice_qp][0]);
}
do
{
{
WORD32 cur_ctb_idx = ps_codec->s_parse.i4_ctb_x
+ ps_codec->s_parse.i4_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
if(1 == ps_codec->i4_num_cores && 0 == cur_ctb_idx % RESET_TU_BUF_NCTB)
{
ps_codec->s_parse.ps_tu = ps_codec->s_parse.ps_pic_tu;
ps_codec->s_parse.i4_pic_tu_idx = 0;
}
}
end_of_pic = 0;
/* Section:7.3.7 Coding tree unit syntax */
/* coding_tree_unit() inlined here */
/* If number of cores is greater than 1, then add job to the queue */
//TODO: Dual core implementation might need a different algo for better load balancing
/* At the start of ctb row parsing in a tile, queue a job for processing the current tile row */
ps_codec->s_parse.i4_ctb_num_pcm_blks = 0;
/*At the beginning of each tile-which is not the beginning of a slice, cabac context must be initialized.
* Hence, check for the tile beginning here */
if(((0 == ps_codec->s_parse.i4_ctb_tile_x) && (0 == ps_codec->s_parse.i4_ctb_tile_y))
&& (!((ps_tile->u1_pos_x == 0) && (ps_tile->u1_pos_y == 0)))
&& (!((0 == ps_codec->s_parse.i4_ctb_slice_x) && (0 == ps_codec->s_parse.i4_ctb_slice_y))))
{
slice_qp = ps_slice_hdr->i1_slice_qp_delta + ps_pps->i1_pic_init_qp;
slice_qp = CLIP3(slice_qp, 0, 51);
ps_codec->s_parse.u4_qp = slice_qp;
ihevcd_get_tile_pos(ps_pps, ps_sps, ps_codec->s_parse.i4_ctb_x,
ps_codec->s_parse.i4_ctb_y,
&ps_codec->s_parse.i4_ctb_tile_x,
&ps_codec->s_parse.i4_ctb_tile_y,
&tile_idx);
ps_codec->s_parse.ps_tile = ps_pps->ps_tile + tile_idx;
ps_codec->s_parse.i4_cur_tile_idx = tile_idx;
ps_tile_prev = ps_tile - 1;
tile_start_ctb_idx = ps_tile->u1_pos_x
+ ps_tile->u1_pos_y * (ps_sps->i2_pic_wd_in_ctb);
slice_start_ctb_idx = ps_slice_hdr->i2_ctb_x
+ ps_slice_hdr->i2_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
/*For slices that span across multiple tiles*/
if(slice_start_ctb_idx < tile_start_ctb_idx)
{ /* 2 Cases
* 1 - slice spans across frame-width- but does not start from 1st column
* 2 - Slice spans across multiple tiles anywhere is a frame
*/
ps_codec->s_parse.i4_ctb_slice_y = ps_tile->u1_pos_y - ps_slice_hdr->i2_ctb_y;
if(!(((ps_slice_hdr->i2_ctb_x + ps_tile_prev->u2_wd) % ps_sps->i2_pic_wd_in_ctb) == ps_tile->u1_pos_x)) //Case 2
{
if(ps_slice_hdr->i2_ctb_y <= ps_tile->u1_pos_y)
{
//Check if ctb x is before or after
if(ps_slice_hdr->i2_ctb_x > ps_tile->u1_pos_x)
{
ps_codec->s_parse.i4_ctb_slice_y -= 1;
}
}
}
/*ps_codec->s_parse.i4_ctb_slice_y = ps_tile->u1_pos_y - ps_slice_hdr->i2_ctb_y;
if (ps_slice_hdr->i2_ctb_y <= ps_tile->u1_pos_y)
{
//Check if ctb x is before or after
if (ps_slice_hdr->i2_ctb_x > ps_tile->u1_pos_x )
{
ps_codec->s_parse.i4_ctb_slice_y -= 1 ;
}
}*/
}
/* Cabac init is done unconditionally at the start of the tile irrespective
* of whether it is a dependent or an independent slice */
{
ihevcd_cabac_init(&ps_codec->s_parse.s_cabac,
&ps_codec->s_parse.s_bitstrm,
slice_qp,
cabac_init_idc,
&gau1_ihevc_cab_ctxts[cabac_init_idc][slice_qp][0]);
}
}
/* If number of cores is greater than 1, then add job to the queue */
//TODO: Dual core implementation might need a different algo for better load balancing
/* At the start of ctb row parsing in a tile, queue a job for processing the current tile row */
if(0 == ps_codec->s_parse.i4_ctb_tile_x)
{
if(1 < ps_codec->i4_num_cores)
{
proc_job_t s_job;
IHEVCD_ERROR_T ret;
s_job.i4_cmd = CMD_PROCESS;
s_job.i2_ctb_cnt = (WORD16)ps_tile->u2_wd;
s_job.i2_ctb_x = (WORD16)ps_codec->s_parse.i4_ctb_x;
s_job.i2_ctb_y = (WORD16)ps_codec->s_parse.i4_ctb_y;
s_job.i2_slice_idx = (WORD16)ps_codec->s_parse.i4_cur_slice_idx;
s_job.i4_tu_coeff_data_ofst = (UWORD8 *)ps_codec->s_parse.pv_tu_coeff_data -
(UWORD8 *)ps_codec->s_parse.pv_pic_tu_coeff_data;
ret = ihevcd_jobq_queue((jobq_t *)ps_codec->s_parse.pv_proc_jobq, &s_job, sizeof(proc_job_t), 1);
if(ret != (IHEVCD_ERROR_T)IHEVCD_SUCCESS)
return ret;
}
else
{
process_ctxt_t *ps_proc = &ps_codec->as_process[0];
WORD32 tu_coeff_data_ofst = (UWORD8 *)ps_codec->s_parse.pv_tu_coeff_data -
(UWORD8 *)ps_codec->s_parse.pv_pic_tu_coeff_data;
/* If the codec is running in single core mode,
* initialize zeroth process context
* TODO: Dual core mode might need a different implementation instead of jobq
*/
ps_proc->i4_ctb_cnt = ps_tile->u2_wd;
ps_proc->i4_ctb_x = ps_codec->s_parse.i4_ctb_x;
ps_proc->i4_ctb_y = ps_codec->s_parse.i4_ctb_y;
ps_proc->i4_cur_slice_idx = ps_codec->s_parse.i4_cur_slice_idx;
ihevcd_init_proc_ctxt(ps_proc, tu_coeff_data_ofst);
}
}
/* Restore cabac context model from top right CTB if entropy sync is enabled */
if(ps_pps->i1_entropy_coding_sync_enabled_flag)
{
/*TODO Handle single CTB and top-right belonging to a different slice */
if(0 == ps_codec->s_parse.i4_ctb_x)
{
//WORD32 size = sizeof(ps_codec->s_parse.s_cabac.au1_ctxt_models);
WORD32 default_ctxt = 0;
if((0 == ps_codec->s_parse.i4_ctb_slice_y) && (!ps_slice_hdr->i1_dependent_slice_flag))
default_ctxt = 1;
if(1 == ps_sps->i2_pic_wd_in_ctb)
default_ctxt = 1;
ps_codec->s_parse.u4_qp = slice_qp;
if(default_ctxt)
{
//memcpy(&ps_codec->s_parse.s_cabac.au1_ctxt_models, &gau1_ihevc_cab_ctxts[cabac_init_idc][slice_qp][0], size);
ihevcd_cabac_init(&ps_codec->s_parse.s_cabac,
&ps_codec->s_parse.s_bitstrm,
slice_qp,
cabac_init_idc,
&gau1_ihevc_cab_ctxts[cabac_init_idc][slice_qp][0]);
}
else
{
//memcpy(&ps_codec->s_parse.s_cabac.au1_ctxt_models, &ps_codec->s_parse.s_cabac.au1_ctxt_models_sync, size);
ihevcd_cabac_init(&ps_codec->s_parse.s_cabac,
&ps_codec->s_parse.s_bitstrm,
slice_qp,
cabac_init_idc,
(const UWORD8 *)&ps_codec->s_parse.s_cabac.au1_ctxt_models_sync);
}
}
}
if(0 == ps_codec->i4_slice_error)
{
if(ps_slice_hdr->i1_slice_sao_luma_flag || ps_slice_hdr->i1_slice_sao_chroma_flag)
ihevcd_parse_sao(ps_codec);
}
else
{
sao_t *ps_sao = ps_codec->s_parse.ps_pic_sao +
ps_codec->s_parse.i4_ctb_x +
ps_codec->s_parse.i4_ctb_y * ps_sps->i2_pic_wd_in_ctb;
/* Default values */
ps_sao->b3_y_type_idx = 0;
ps_sao->b3_cb_type_idx = 0;
ps_sao->b3_cr_type_idx = 0;
}
//AEV_TRACE("CTB x", ps_codec->s_parse.i4_ctb_x, 0);
//AEV_TRACE("CTB y", ps_codec->s_parse.i4_ctb_y, 0);
{
WORD32 ctb_indx;
ctb_indx = ps_codec->s_parse.i4_ctb_x + ps_sps->i2_pic_wd_in_ctb * ps_codec->s_parse.i4_ctb_y;
ps_codec->s_parse.s_bs_ctxt.pu1_pic_qp_const_in_ctb[ctb_indx >> 3] |= (1 << (ctb_indx & 7));
{
UWORD16 *pu1_slice_idx = ps_codec->s_parse.pu1_slice_idx;
pu1_slice_idx[ctb_indx] = ps_codec->s_parse.i4_cur_independent_slice_idx;
}
}
if(0 == ps_codec->i4_slice_error)
{
ihevcd_parse_coding_quadtree(ps_codec,
(ps_codec->s_parse.i4_ctb_x << ps_sps->i1_log2_ctb_size),
(ps_codec->s_parse.i4_ctb_y << ps_sps->i1_log2_ctb_size),
ps_sps->i1_log2_ctb_size,
0);
}
else
{
tu_t *ps_tu = ps_codec->s_parse.ps_tu;
pu_t *ps_pu = ps_codec->s_parse.ps_pu;
ps_tu->b1_cb_cbf = 0;
ps_tu->b1_cr_cbf = 0;
ps_tu->b1_y_cbf = 0;
ps_tu->b4_pos_x = 0;
ps_tu->b4_pos_y = 0;
ps_tu->b1_transquant_bypass = 0;
ps_tu->b3_size = (ps_sps->i1_log2_ctb_size - 2);
ps_tu->b7_qp = ps_codec->s_parse.u4_qp;
ps_tu->b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE;
ps_tu->b6_luma_intra_mode = INTRA_PRED_NONE;
ps_tu->b1_first_tu_in_cu = 1;
ps_codec->s_parse.ps_tu++;
ps_codec->s_parse.s_cu.i4_tu_cnt++;
ps_codec->s_parse.i4_pic_tu_idx++;
ps_codec->s_parse.s_cu.i4_pred_mode = PRED_MODE_SKIP;
ps_codec->s_parse.s_cu.i4_part_mode = PART_2Nx2N;
ps_pu->b2_part_idx = 0;
ps_pu->b4_pos_x = 0;
ps_pu->b4_pos_y = 0;
ps_pu->b4_wd = (ctb_size >> 2) - 1;
ps_pu->b4_ht = (ctb_size >> 2) - 1;
ps_pu->b1_intra_flag = 0;
ps_pu->b3_part_mode = ps_codec->s_parse.s_cu.i4_part_mode;
ps_pu->b1_merge_flag = 1;
ps_pu->b3_merge_idx = 0;
ps_codec->s_parse.ps_pu++;
ps_codec->s_parse.i4_pic_pu_idx++;
}
if(0 == ps_codec->i4_slice_error)
end_of_slice_flag = ihevcd_cabac_decode_terminate(&ps_codec->s_parse.s_cabac, &ps_codec->s_parse.s_bitstrm);
else
end_of_slice_flag = 0;
AEV_TRACE("end_of_slice_flag", end_of_slice_flag, ps_codec->s_parse.s_cabac.u4_range);
/* In case of tiles or entropy sync, terminate cabac and copy cabac context backed up at the end of top-right CTB */
if(ps_pps->i1_tiles_enabled_flag || ps_pps->i1_entropy_coding_sync_enabled_flag)
{
WORD32 end_of_tile = 0;
WORD32 end_of_tile_row = 0;
/* Take a back up of cabac context models if entropy sync is enabled */
if(ps_pps->i1_entropy_coding_sync_enabled_flag || ps_pps->i1_tiles_enabled_flag)
{
if(1 == ps_codec->s_parse.i4_ctb_x)