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android / platform / external / libhevc / 68e532d83a1b98f6b5e297d71b547ed93a68dfe3 / . / decoder / ihevcd_sao.c
blob: dc852c6476823e20f42de046130b1fb1bbbc35c5 [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
* ihevc_sao.c
*
* @brief
* Contains function definitions for sample adaptive offset process
*
* @author
* Srinivas T
*
* @par List of Functions:
*
* @remarks
* None
*
*******************************************************************************
*/
#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_defs.h"
#include "ihevc_structs.h"
#include "ihevc_macros.h"
#include "ihevc_platform_macros.h"
#include "ihevc_cabac_tables.h"
#include "ihevc_sao.h"
#include "ihevc_mem_fns.h"
#include "ihevc_error.h"
#include "ihevc_common_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_job_queue.h"
#include "ihevcd_utils.h"
#include "ihevc_deblk.h"
#include "ihevc_deblk_tables.h"
#include "ihevcd_profile.h"
#include "ihevcd_sao.h"
#include "ihevcd_debug.h"
#define SAO_SHIFT_CTB 8
/**
* SAO at CTB level is implemented for a shifted CTB(8 pixels in x and y directions)
*/
void ihevcd_sao_ctb(sao_ctxt_t *ps_sao_ctxt)
{
codec_t *ps_codec = ps_sao_ctxt->ps_codec;
UWORD8 *pu1_src_luma;
UWORD8 *pu1_src_chroma;
WORD32 src_strd;
WORD32 ctb_size;
WORD32 log2_ctb_size;
sps_t *ps_sps;
sao_t *ps_sao;
WORD32 row, col;
UWORD8 au1_avail_luma[8];
UWORD8 au1_avail_chroma[8];
WORD32 i;
UWORD8 *pu1_src_top_luma;
UWORD8 *pu1_src_top_chroma;
UWORD8 *pu1_src_left_luma;
UWORD8 *pu1_src_left_chroma;
UWORD8 au1_src_top_right[2];
UWORD8 au1_src_bot_left[2];
UWORD8 *pu1_no_loop_filter_flag;
WORD32 loop_filter_strd;
WORD8 ai1_offset_y[5];
WORD8 ai1_offset_cb[5];
WORD8 ai1_offset_cr[5];
PROFILE_DISABLE_SAO();
ai1_offset_y[0] = 0;
ai1_offset_cb[0] = 0;
ai1_offset_cr[0] = 0;
ps_sps = ps_sao_ctxt->ps_sps;
log2_ctb_size = ps_sps->i1_log2_ctb_size;
ctb_size = (1 << log2_ctb_size);
src_strd = ps_sao_ctxt->ps_codec->i4_strd;
pu1_src_luma = ps_sao_ctxt->pu1_cur_pic_luma + ((ps_sao_ctxt->i4_ctb_x + ps_sao_ctxt->i4_ctb_y * ps_sao_ctxt->ps_codec->i4_strd) << (log2_ctb_size));
pu1_src_chroma = ps_sao_ctxt->pu1_cur_pic_chroma + ((ps_sao_ctxt->i4_ctb_x + ps_sao_ctxt->i4_ctb_y * ps_sao_ctxt->ps_codec->i4_strd / 2) << (log2_ctb_size));
ps_sao = ps_sao_ctxt->ps_pic_sao + ps_sao_ctxt->i4_ctb_x + ps_sao_ctxt->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb;
loop_filter_strd = (ps_sps->i2_pic_width_in_luma_samples + 63) / 64;
/* Current CTB */
{
WORD32 sao_wd_luma;
WORD32 sao_wd_chroma;
WORD32 sao_ht_luma;
WORD32 sao_ht_chroma;
WORD32 remaining_rows;
WORD32 remaining_cols;
remaining_cols = ps_sps->i2_pic_width_in_luma_samples - (ps_sao_ctxt->i4_ctb_x << log2_ctb_size);
sao_wd_luma = MIN(ctb_size, remaining_cols);
sao_wd_chroma = MIN(ctb_size, remaining_cols);
remaining_rows = ps_sps->i2_pic_height_in_luma_samples - (ps_sao_ctxt->i4_ctb_y << log2_ctb_size);
sao_ht_luma = MIN(ctb_size, remaining_rows);
sao_ht_chroma = MIN(ctb_size, remaining_rows) / 2;
pu1_src_top_luma = ps_sao_ctxt->pu1_sao_src_top_luma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size);
pu1_src_top_chroma = ps_sao_ctxt->pu1_sao_src_top_chroma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size);
pu1_src_left_luma = ps_sao_ctxt->pu1_sao_src_left_luma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size);
pu1_src_left_chroma = ps_sao_ctxt->pu1_sao_src_left_chroma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size);
pu1_no_loop_filter_flag = ps_sao_ctxt->pu1_pic_no_loop_filter_flag +
((ps_sao_ctxt->i4_ctb_y * ctb_size) / 8) * loop_filter_strd +
((ps_sao_ctxt->i4_ctb_x * ctb_size) / 64);
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
for(i = 0; i < 8; i++)
{
au1_avail_luma[i] = 255;
au1_avail_chroma[i] = 255;
}
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_luma[0] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[6] = 0;
au1_avail_chroma[0] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[6] = 0;
}
if(ps_sps->i2_pic_wd_in_ctb - 1 == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_luma[1] = 0;
au1_avail_luma[5] = 0;
au1_avail_luma[7] = 0;
au1_avail_chroma[1] = 0;
au1_avail_chroma[5] = 0;
au1_avail_chroma[7] = 0;
}
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_luma[2] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[5] = 0;
au1_avail_chroma[2] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[5] = 0;
}
if(ps_sps->i2_pic_ht_in_ctb - 1 == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_luma[3] = 0;
au1_avail_luma[6] = 0;
au1_avail_luma[7] = 0;
au1_avail_chroma[3] = 0;
au1_avail_chroma[6] = 0;
au1_avail_chroma[7] = 0;
}
if(0 == ps_sao->b3_y_type_idx)
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
ps_sao_ctxt->pu1_sao_src_top_left_luma_curr_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
else
{
UWORD8 au1_src_copy[(MAX_CTB_SIZE + 2) * (MAX_CTB_SIZE + 2)];
UWORD8 *pu1_src_copy = au1_src_copy + (MAX_CTB_SIZE + 2) + 1;
WORD32 tmp_strd = MAX_CTB_SIZE + 2;
WORD32 no_loop_filter_enabled = 0;
/* Check the loop filter flags and copy the original values for back up */
{
UWORD32 u4_no_loop_filter_flag;
WORD32 min_cu = 8;
UWORD8 *pu1_src_tmp = pu1_src_luma;
for(i = 0; i < (sao_ht_luma + min_cu - 1) / min_cu; i++)
{
u4_no_loop_filter_flag = (*(UWORD32 *)(pu1_no_loop_filter_flag + i * loop_filter_strd)) >>
((((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma) / 8) % 8);
u4_no_loop_filter_flag &= (1 << ((sao_wd_luma + (min_cu - 1)) / min_cu)) - 1;
if(u4_no_loop_filter_flag)
{
WORD32 tmp_wd = sao_wd_luma;
no_loop_filter_enabled = 1;
while(tmp_wd > 0)
{
if(CTZ(u4_no_loop_filter_flag))
{
u4_no_loop_filter_flag >>= (CTZ(u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(u4_no_loop_filter_flag) * min_cu;
}
else
{
for(row = 0; row < MIN(min_cu, sao_ht_luma - (i - 1) * min_cu); row++)
{
for(col = 0; col < MIN((WORD32)CTZ(~u4_no_loop_filter_flag) * min_cu, tmp_wd); col++)
{
pu1_src_copy[row * src_strd + col] = pu1_src_tmp[row * tmp_strd + col];
}
}
u4_no_loop_filter_flag >>= (CTZ(~u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(~u4_no_loop_filter_flag) * min_cu;
}
}
pu1_src_tmp -= sao_wd_luma;
}
pu1_src_tmp += min_cu * src_strd;
pu1_src_copy += min_cu * tmp_strd;
}
}
if(1 == ps_sao->b3_y_type_idx)
{
ps_codec->s_func_selector.ihevc_sao_band_offset_luma_fptr(pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
ps_sao_ctxt->pu1_sao_src_top_left_luma_curr_ctb,
ps_sao->b5_y_band_pos,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma);
}
else // if(2 <= ps_sao->b3_y_type_idx)
{
au1_src_top_right[0] = pu1_src_top_luma[sao_wd_luma];
au1_src_bot_left[0] = pu1_src_luma[sao_ht_luma * src_strd - 1];
ps_codec->apf_sao_luma[ps_sao->b3_y_type_idx - 2](pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
ps_sao_ctxt->pu1_sao_src_top_left_luma_curr_ctb,
au1_src_top_right,
au1_src_bot_left,
au1_avail_luma,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma);
}
/* Check the loop filter flags and copy the original values back if they are set */
if(no_loop_filter_enabled)
{
UWORD32 u4_no_loop_filter_flag;
WORD32 min_cu = 8;
UWORD8 *pu1_src_tmp = pu1_src_luma;
for(i = 0; i < (sao_ht_luma + min_cu - 1) / min_cu; i++)
{
u4_no_loop_filter_flag = (*(UWORD32 *)(pu1_no_loop_filter_flag + i * loop_filter_strd)) >> ((((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma) / 8) % 8);
u4_no_loop_filter_flag &= (1 << ((sao_wd_luma + (min_cu - 1)) / min_cu)) - 1;
if(u4_no_loop_filter_flag)
{
WORD32 tmp_wd = sao_wd_luma;
while(tmp_wd > 0)
{
if(CTZ(u4_no_loop_filter_flag))
{
u4_no_loop_filter_flag >>= (CTZ(u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(u4_no_loop_filter_flag) * min_cu;
}
else
{
for(row = 0; row < MIN(min_cu, sao_ht_luma - (i - 1) * min_cu); row++)
{
for(col = 0; col < MIN((WORD32)CTZ(~u4_no_loop_filter_flag) * min_cu, tmp_wd); col++)
{
pu1_src_tmp[row * src_strd + col] = pu1_src_copy[row * tmp_strd + col];
}
}
u4_no_loop_filter_flag >>= (CTZ(~u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(~u4_no_loop_filter_flag) * min_cu;
}
}
pu1_src_tmp -= sao_wd_luma;
}
pu1_src_tmp += min_cu * src_strd;
pu1_src_copy += min_cu * tmp_strd;
}
}
}
if(0 == ps_sao->b3_cb_type_idx)
{
for(row = 0; row < sao_ht_chroma; row++)
{
pu1_src_left_chroma[2 * row] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 2)];
pu1_src_left_chroma[2 * row + 1] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 1)];
}
ps_sao_ctxt->pu1_sao_src_top_left_chroma_curr_ctb[0] = pu1_src_top_chroma[sao_wd_chroma - 2];
ps_sao_ctxt->pu1_sao_src_top_left_chroma_curr_ctb[1] = pu1_src_top_chroma[sao_wd_chroma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_chroma, &pu1_src_chroma[(sao_ht_chroma - 1) * src_strd], sao_wd_chroma);
}
else
{
UWORD8 au1_src_copy[(MAX_CTB_SIZE + 4) * (MAX_CTB_SIZE + 2)];
UWORD8 *pu1_src_copy = au1_src_copy + (MAX_CTB_SIZE + 4) + 2;
WORD32 tmp_strd = MAX_CTB_SIZE + 4;
WORD32 no_loop_filter_enabled = 0;
/* Check the loop filter flags and copy the original values for back up */
{
UWORD32 u4_no_loop_filter_flag;
WORD32 min_cu = 4;
UWORD8 *pu1_src_tmp = pu1_src_chroma;
for(i = 0; i < (sao_ht_chroma + min_cu - 1) / min_cu; i++)
{
u4_no_loop_filter_flag = (*(UWORD32 *)(pu1_no_loop_filter_flag + i * loop_filter_strd)) >> ((((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma) / 8) % 8);
u4_no_loop_filter_flag &= (1 << ((sao_wd_chroma + (min_cu - 1)) / min_cu)) - 1;
if(u4_no_loop_filter_flag)
{
WORD32 tmp_wd = sao_wd_chroma;
no_loop_filter_enabled = 1;
while(tmp_wd > 0)
{
if(CTZ(u4_no_loop_filter_flag))
{
u4_no_loop_filter_flag >>= (CTZ(u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(u4_no_loop_filter_flag) * min_cu;
}
else
{
for(row = 0; row < MIN(min_cu, sao_ht_chroma - (i - 1) * min_cu); row++)
{
for(col = 0; col < MIN((WORD32)CTZ(~u4_no_loop_filter_flag) * min_cu, tmp_wd); col++)
{
pu1_src_copy[row * src_strd + col] = pu1_src_tmp[row * tmp_strd + col];
}
}
u4_no_loop_filter_flag >>= (CTZ(~u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(~u4_no_loop_filter_flag) * min_cu;
}
}
pu1_src_tmp -= sao_wd_chroma;
}
pu1_src_tmp += min_cu * src_strd;
pu1_src_copy += min_cu * tmp_strd;
}
}
if(1 == ps_sao->b3_cb_type_idx)
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
ps_sao_ctxt->pu1_sao_src_top_left_chroma_curr_ctb,
ps_sao->b5_cb_band_pos,
ps_sao->b5_cr_band_pos,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma
);
}
else // if(2 <= ps_sao->b3_cb_type_idx)
{
au1_src_top_right[0] = pu1_src_top_chroma[sao_wd_chroma];
au1_src_top_right[1] = pu1_src_top_chroma[sao_wd_chroma + 1];
au1_src_bot_left[0] = pu1_src_chroma[sao_ht_chroma * src_strd - 2];
au1_src_bot_left[1] = pu1_src_chroma[sao_ht_chroma * src_strd - 1];
ps_codec->apf_sao_chroma[ps_sao->b3_cb_type_idx - 2](pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
ps_sao_ctxt->pu1_sao_src_top_left_chroma_curr_ctb,
au1_src_top_right,
au1_src_bot_left,
au1_avail_chroma,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma);
}
/* Check the loop filter flags and copy the original values back if they are set */
if(no_loop_filter_enabled)
{
UWORD32 u4_no_loop_filter_flag;
WORD32 min_cu = 4;
UWORD8 *pu1_src_tmp = pu1_src_chroma;
for(i = 0; i < (sao_ht_chroma + min_cu - 1) / min_cu; i++)
{
u4_no_loop_filter_flag = (*(UWORD32 *)(pu1_no_loop_filter_flag + i * loop_filter_strd)) >> ((((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma) / 8) % 8);
u4_no_loop_filter_flag &= (1 << ((sao_wd_chroma + (min_cu - 1)) / min_cu)) - 1;
if(u4_no_loop_filter_flag)
{
WORD32 tmp_wd = sao_wd_chroma;
while(tmp_wd > 0)
{
if(CTZ(u4_no_loop_filter_flag))
{
u4_no_loop_filter_flag >>= (CTZ(u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(u4_no_loop_filter_flag) * min_cu;
}
else
{
for(row = 0; row < MIN(min_cu, sao_ht_chroma - (i - 1) * min_cu); row++)
{
for(col = 0; col < MIN((WORD32)CTZ(~u4_no_loop_filter_flag) * min_cu, tmp_wd); col++)
{
pu1_src_tmp[row * src_strd + col] = pu1_src_copy[row * tmp_strd + col];
}
}
u4_no_loop_filter_flag >>= (CTZ(~u4_no_loop_filter_flag));
pu1_src_tmp += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
pu1_src_copy += MIN((WORD32)CTZ(~u4_no_loop_filter_flag), tmp_wd);
tmp_wd -= CTZ(~u4_no_loop_filter_flag) * min_cu;
}
}
pu1_src_tmp -= sao_wd_chroma;
}
pu1_src_tmp += min_cu * src_strd;
pu1_src_copy += min_cu * tmp_strd;
}
}
}
}
}
void ihevcd_sao_shift_ctb(sao_ctxt_t *ps_sao_ctxt)
{
codec_t *ps_codec = ps_sao_ctxt->ps_codec;
UWORD8 *pu1_src_luma;
UWORD8 *pu1_src_chroma;
WORD32 src_strd;
WORD32 ctb_size;
WORD32 log2_ctb_size;
sps_t *ps_sps;
sao_t *ps_sao;
pps_t *ps_pps;
slice_header_t *ps_slice_hdr, *ps_slice_hdr_base;
tile_t *ps_tile;
UWORD16 *pu1_slice_idx;
UWORD16 *pu1_tile_idx;
WORD32 row, col;
UWORD8 au1_avail_luma[8];
UWORD8 au1_avail_chroma[8];
UWORD8 au1_tile_slice_boundary[8];
UWORD8 au4_ilf_across_tile_slice_enable[8];
WORD32 i;
UWORD8 *pu1_src_top_luma;
UWORD8 *pu1_src_top_chroma;
UWORD8 *pu1_src_left_luma;
UWORD8 *pu1_src_left_chroma;
UWORD8 au1_src_top_right[2];
UWORD8 au1_src_bot_left[2];
UWORD8 *pu1_no_loop_filter_flag;
UWORD8 *pu1_src_backup_luma;
UWORD8 *pu1_src_backup_chroma;
WORD32 backup_strd;
WORD32 loop_filter_strd;
WORD32 no_loop_filter_enabled_luma = 0;
WORD32 no_loop_filter_enabled_chroma = 0;
UWORD8 *pu1_sao_src_top_left_chroma_curr_ctb;
UWORD8 *pu1_sao_src_top_left_luma_curr_ctb;
UWORD8 *pu1_sao_src_luma_top_left_ctb;
UWORD8 *pu1_sao_src_chroma_top_left_ctb;
UWORD8 *pu1_sao_src_top_left_luma_top_right;
UWORD8 *pu1_sao_src_top_left_chroma_top_right;
UWORD8 u1_sao_src_top_left_luma_bot_left;
UWORD8 *pu1_sao_src_top_left_luma_bot_left;
UWORD8 *au1_sao_src_top_left_chroma_bot_left;
UWORD8 *pu1_sao_src_top_left_chroma_bot_left;
/* Only 5 values are used, but arrays are large
enough so that SIMD functions can read 64 bits at a time */
WORD8 ai1_offset_y[8];
WORD8 ai1_offset_cb[8];
WORD8 ai1_offset_cr[8];
WORD32 chroma_yuv420sp_vu = ps_sao_ctxt->is_chroma_yuv420sp_vu;
PROFILE_DISABLE_SAO();
ai1_offset_y[0] = 0;
ai1_offset_cb[0] = 0;
ai1_offset_cr[0] = 0;
ps_sps = ps_sao_ctxt->ps_sps;
ps_pps = ps_sao_ctxt->ps_pps;
ps_tile = ps_sao_ctxt->ps_tile;
log2_ctb_size = ps_sps->i1_log2_ctb_size;
ctb_size = (1 << log2_ctb_size);
src_strd = ps_sao_ctxt->ps_codec->i4_strd;
ps_slice_hdr_base = ps_sao_ctxt->ps_codec->ps_slice_hdr_base;
ps_slice_hdr = ps_slice_hdr_base + (ps_sao_ctxt->i4_cur_slice_idx & (MAX_SLICE_HDR_CNT - 1));
pu1_slice_idx = ps_sao_ctxt->pu1_slice_idx;
pu1_tile_idx = ps_sao_ctxt->pu1_tile_idx;
pu1_src_luma = ps_sao_ctxt->pu1_cur_pic_luma + ((ps_sao_ctxt->i4_ctb_x + ps_sao_ctxt->i4_ctb_y * ps_sao_ctxt->ps_codec->i4_strd) << (log2_ctb_size));
pu1_src_chroma = ps_sao_ctxt->pu1_cur_pic_chroma + ((ps_sao_ctxt->i4_ctb_x + ps_sao_ctxt->i4_ctb_y * ps_sao_ctxt->ps_codec->i4_strd / 2) << (log2_ctb_size));
/*Stores the left value for each row ctbs- Needed for column tiles*/
pu1_sao_src_top_left_luma_curr_ctb = ps_sao_ctxt->pu1_sao_src_top_left_luma_curr_ctb + ((ps_sao_ctxt->i4_ctb_y));
pu1_sao_src_top_left_chroma_curr_ctb = ps_sao_ctxt->pu1_sao_src_top_left_chroma_curr_ctb + (2 * (ps_sao_ctxt->i4_ctb_y));
pu1_sao_src_luma_top_left_ctb = ps_sao_ctxt->pu1_sao_src_luma_top_left_ctb + ((ps_sao_ctxt->i4_ctb_y));
pu1_sao_src_chroma_top_left_ctb = ps_sao_ctxt->pu1_sao_src_chroma_top_left_ctb + (2 * ps_sao_ctxt->i4_ctb_y);
u1_sao_src_top_left_luma_bot_left = ps_sao_ctxt->u1_sao_src_top_left_luma_bot_left; // + ((ps_sao_ctxt->i4_ctb_y));
pu1_sao_src_top_left_luma_bot_left = ps_sao_ctxt->pu1_sao_src_top_left_luma_bot_left + ((ps_sao_ctxt->i4_ctb_y));
au1_sao_src_top_left_chroma_bot_left = ps_sao_ctxt->au1_sao_src_top_left_chroma_bot_left; // + (2 * ps_sao_ctxt->i4_ctb_y);
pu1_sao_src_top_left_chroma_bot_left = ps_sao_ctxt->pu1_sao_src_top_left_chroma_bot_left + (2 * ps_sao_ctxt->i4_ctb_y);
pu1_sao_src_top_left_luma_top_right = ps_sao_ctxt->pu1_sao_src_top_left_luma_top_right + ((ps_sao_ctxt->i4_ctb_x));
pu1_sao_src_top_left_chroma_top_right = ps_sao_ctxt->pu1_sao_src_top_left_chroma_top_right + (2 * ps_sao_ctxt->i4_ctb_x);
ps_sao = ps_sao_ctxt->ps_pic_sao + ps_sao_ctxt->i4_ctb_x + ps_sao_ctxt->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb;
loop_filter_strd = (ps_sps->i2_pic_width_in_luma_samples + 63) >> 6;
backup_strd = 2 * MAX_CTB_SIZE;
DEBUG_INIT_TMP_BUF(ps_sao_ctxt->pu1_tmp_buf_luma, ps_sao_ctxt->pu1_tmp_buf_chroma);
{
/* Check the loop filter flags and copy the original values for back up */
/* Luma */
/* Done unconditionally since SAO is done on a shifted CTB and the constituent CTBs
* can belong to different slice with their own sao_enable flag */
{
UWORD32 u4_no_loop_filter_flag;
WORD32 loop_filter_bit_pos;
WORD32 log2_min_cu = 3;
WORD32 min_cu = (1 << log2_min_cu);
UWORD8 *pu1_src_tmp_luma = pu1_src_luma;
WORD32 sao_blk_ht = ctb_size - SAO_SHIFT_CTB;
WORD32 sao_blk_wd = ctb_size;
WORD32 remaining_rows;
WORD32 remaining_cols;
remaining_rows = ps_sps->i2_pic_height_in_luma_samples - ((ps_sao_ctxt->i4_ctb_y << log2_ctb_size) + ctb_size - SAO_SHIFT_CTB);
remaining_cols = ps_sps->i2_pic_width_in_luma_samples - ((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) + ctb_size - SAO_SHIFT_CTB);
if(remaining_rows <= SAO_SHIFT_CTB)
sao_blk_ht += remaining_rows;
if(remaining_cols <= SAO_SHIFT_CTB)
sao_blk_wd += remaining_cols;
pu1_src_tmp_luma -= ps_sao_ctxt->i4_ctb_x ? SAO_SHIFT_CTB : 0;
pu1_src_tmp_luma -= ps_sao_ctxt->i4_ctb_y ? SAO_SHIFT_CTB * src_strd : 0;
pu1_src_backup_luma = ps_sao_ctxt->pu1_tmp_buf_luma;
loop_filter_bit_pos = (ps_sao_ctxt->i4_ctb_x << (log2_ctb_size - 3)) +
(ps_sao_ctxt->i4_ctb_y << (log2_ctb_size - 3)) * (loop_filter_strd << 3);
if(ps_sao_ctxt->i4_ctb_x > 0)
loop_filter_bit_pos -= 1;
pu1_no_loop_filter_flag = ps_sao_ctxt->pu1_pic_no_loop_filter_flag +
(loop_filter_bit_pos >> 3);
for(i = -(ps_sao_ctxt->i4_ctb_y ? SAO_SHIFT_CTB : 0) >> log2_min_cu;
i < (sao_blk_ht + (min_cu - 1)) >> log2_min_cu; i++)
{
WORD32 tmp_wd = sao_blk_wd;
u4_no_loop_filter_flag = (*(UWORD32 *)(pu1_no_loop_filter_flag + i * loop_filter_strd)) >>
(loop_filter_bit_pos & 7);
u4_no_loop_filter_flag &= (1 << ((tmp_wd + (min_cu - 1)) >> log2_min_cu)) - 1;
if(u4_no_loop_filter_flag)
{
no_loop_filter_enabled_luma = 1;
while(tmp_wd > 0)
{
if(CTZ(u4_no_loop_filter_flag))
{
pu1_src_tmp_luma += MIN((WORD32)(CTZ(u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
pu1_src_backup_luma += MIN((WORD32)(CTZ(u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
tmp_wd -= CTZ(u4_no_loop_filter_flag) << log2_min_cu;
u4_no_loop_filter_flag >>= (CTZ(u4_no_loop_filter_flag));
}
else
{
for(row = 0; row < min_cu; row++)
{
for(col = 0; col < MIN((WORD32)(CTZ(~u4_no_loop_filter_flag) << log2_min_cu), tmp_wd); col++)
{
pu1_src_backup_luma[row * backup_strd + col] = pu1_src_tmp_luma[row * src_strd + col];
}
}
pu1_src_tmp_luma += MIN(((WORD32)CTZ(~u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
pu1_src_backup_luma += MIN(((WORD32)CTZ(~u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
tmp_wd -= CTZ(~u4_no_loop_filter_flag) << log2_min_cu;
u4_no_loop_filter_flag >>= (CTZ(~u4_no_loop_filter_flag));
}
}
pu1_src_tmp_luma -= sao_blk_wd;
pu1_src_backup_luma -= sao_blk_wd;
}
pu1_src_tmp_luma += (src_strd << log2_min_cu);
pu1_src_backup_luma += (backup_strd << log2_min_cu);
}
}
/* Chroma */
{
UWORD32 u4_no_loop_filter_flag;
WORD32 loop_filter_bit_pos;
WORD32 log2_min_cu = 3;
WORD32 min_cu = (1 << log2_min_cu);
UWORD8 *pu1_src_tmp_chroma = pu1_src_chroma;
WORD32 sao_blk_ht = ctb_size - 2 * SAO_SHIFT_CTB;
WORD32 sao_blk_wd = ctb_size;
WORD32 remaining_rows;
WORD32 remaining_cols;
remaining_rows = ps_sps->i2_pic_height_in_luma_samples - ((ps_sao_ctxt->i4_ctb_y << log2_ctb_size) + ctb_size - 2 * SAO_SHIFT_CTB);
remaining_cols = ps_sps->i2_pic_width_in_luma_samples - ((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) + ctb_size - 2 * SAO_SHIFT_CTB);
if(remaining_rows <= 2 * SAO_SHIFT_CTB)
sao_blk_ht += remaining_rows;
if(remaining_cols <= 2 * SAO_SHIFT_CTB)
sao_blk_wd += remaining_cols;
pu1_src_tmp_chroma -= ps_sao_ctxt->i4_ctb_x ? SAO_SHIFT_CTB * 2 : 0;
pu1_src_tmp_chroma -= ps_sao_ctxt->i4_ctb_y ? SAO_SHIFT_CTB * src_strd : 0;
pu1_src_backup_chroma = ps_sao_ctxt->pu1_tmp_buf_chroma;
loop_filter_bit_pos = (ps_sao_ctxt->i4_ctb_x << (log2_ctb_size - 3)) +
(ps_sao_ctxt->i4_ctb_y << (log2_ctb_size - 3)) * (loop_filter_strd << 3);
if(ps_sao_ctxt->i4_ctb_x > 0)
loop_filter_bit_pos -= 2;
pu1_no_loop_filter_flag = ps_sao_ctxt->pu1_pic_no_loop_filter_flag +
(loop_filter_bit_pos >> 3);
for(i = -(ps_sao_ctxt->i4_ctb_y ? 2 * SAO_SHIFT_CTB : 0) >> log2_min_cu;
i < (sao_blk_ht + (min_cu - 1)) >> log2_min_cu; i++)
{
WORD32 tmp_wd = sao_blk_wd;
u4_no_loop_filter_flag = (*(UWORD32 *)(pu1_no_loop_filter_flag + i * loop_filter_strd)) >>
(loop_filter_bit_pos & 7);
u4_no_loop_filter_flag &= (1 << ((tmp_wd + (min_cu - 1)) >> log2_min_cu)) - 1;
if(u4_no_loop_filter_flag)
{
no_loop_filter_enabled_chroma = 1;
while(tmp_wd > 0)
{
if(CTZ(u4_no_loop_filter_flag))
{
pu1_src_tmp_chroma += MIN(((WORD32)CTZ(u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
pu1_src_backup_chroma += MIN(((WORD32)CTZ(u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
tmp_wd -= CTZ(u4_no_loop_filter_flag) << log2_min_cu;
u4_no_loop_filter_flag >>= (CTZ(u4_no_loop_filter_flag));
}
else
{
for(row = 0; row < min_cu / 2; row++)
{
for(col = 0; col < MIN(((WORD32)CTZ(~u4_no_loop_filter_flag) << log2_min_cu), tmp_wd); col++)
{
pu1_src_backup_chroma[row * backup_strd + col] = pu1_src_tmp_chroma[row * src_strd + col];
}
}
pu1_src_tmp_chroma += MIN(((WORD32)CTZ(~u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
pu1_src_backup_chroma += MIN(((WORD32)CTZ(~u4_no_loop_filter_flag) << log2_min_cu), tmp_wd);
tmp_wd -= CTZ(~u4_no_loop_filter_flag) << log2_min_cu;
u4_no_loop_filter_flag >>= (CTZ(~u4_no_loop_filter_flag));
}
}
pu1_src_tmp_chroma -= sao_blk_wd;
pu1_src_backup_chroma -= sao_blk_wd;
}
pu1_src_tmp_chroma += ((src_strd / 2) << log2_min_cu);
pu1_src_backup_chroma += ((backup_strd / 2) << log2_min_cu);
}
}
}
DEBUG_PROCESS_TMP_BUF(ps_sao_ctxt->pu1_tmp_buf_luma, ps_sao_ctxt->pu1_tmp_buf_chroma);
/* Top-left CTB */
if(ps_sao_ctxt->i4_ctb_x > 0 && ps_sao_ctxt->i4_ctb_y > 0)
{
WORD32 sao_wd_luma = SAO_SHIFT_CTB;
WORD32 sao_wd_chroma = 2 * SAO_SHIFT_CTB;
WORD32 sao_ht_luma = SAO_SHIFT_CTB;
WORD32 sao_ht_chroma = SAO_SHIFT_CTB;
WORD32 ctbx_tl_t = 0, ctbx_tl_l = 0, ctbx_tl_r = 0, ctbx_tl_d = 0, ctbx_tl = 0;
WORD32 ctby_tl_t = 0, ctby_tl_l = 0, ctby_tl_r = 0, ctby_tl_d = 0, ctby_tl = 0;
WORD32 au4_idx_tl[8], idx_tl;
slice_header_t *ps_slice_hdr_top_left;
{
WORD32 top_left_ctb_indx = (ps_sao_ctxt->i4_ctb_y - 1) * ps_sps->i2_pic_wd_in_ctb +
(ps_sao_ctxt->i4_ctb_x - 1);
ps_slice_hdr_top_left = ps_slice_hdr_base + pu1_slice_idx[top_left_ctb_indx];
}
pu1_src_luma -= (sao_wd_luma + sao_ht_luma * src_strd);
pu1_src_chroma -= (sao_wd_chroma + sao_ht_chroma * src_strd);
ps_sao -= (1 + ps_sps->i2_pic_wd_in_ctb);
pu1_src_top_luma = ps_sao_ctxt->pu1_sao_src_top_luma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma;
pu1_src_top_chroma = ps_sao_ctxt->pu1_sao_src_top_chroma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma;
pu1_src_left_luma = ps_sao_ctxt->pu1_sao_src_left_luma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - sao_ht_luma;
pu1_src_left_chroma = ps_sao_ctxt->pu1_sao_src_left_chroma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - (2 * sao_ht_chroma);
if(ps_slice_hdr_top_left->i1_slice_sao_luma_flag)
{
if(0 == ps_sao->b3_y_type_idx)
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
pu1_sao_src_luma_top_left_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
else if(1 == ps_sao->b3_y_type_idx)
{
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
ps_codec->s_func_selector.ihevc_sao_band_offset_luma_fptr(pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
pu1_sao_src_luma_top_left_ctb,
ps_sao->b5_y_band_pos,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma
);
}
else // if(2 <= ps_sao->b3_y_type_idx)
{
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
for(i = 0; i < 8; i++)
{
au1_avail_luma[i] = 255;
au1_tile_slice_boundary[i] = 0;
au4_idx_tl[i] = 0;
au4_ilf_across_tile_slice_enable[i] = 1;
}
/******************************************************************
* Derive the Top-left CTB's neighbor pixel's slice indices.
*
* TL_T
* 4 _2__5________
* 0 | | |
* TL_L | TL | 1 TL_R|
* |____|_______|____
* 6|TL_D|7 | |
* | 3 | | |
* |____|_______| |
* | |
* | |
* |____________|
*
*****************************************************************/
/*In case of slices, unless we encounter multiple slice/tiled clips, don't enter*/
{
if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
{
/*Assuming that sao shift is uniform along x and y directions*/
if((0 == (1 << log2_ctb_size) - sao_wd_luma) && (ps_sao_ctxt->i4_ctb_y > 1) && (ps_sao_ctxt->i4_ctb_x > 1))
{
ctby_tl_t = ps_sao_ctxt->i4_ctb_y - 2;
ctbx_tl_l = ps_sao_ctxt->i4_ctb_x - 2;
}
else if(!(0 == (1 << log2_ctb_size) - sao_wd_luma))
{
ctby_tl_t = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_tl_l = ps_sao_ctxt->i4_ctb_x - 1;
}
ctbx_tl_t = ps_sao_ctxt->i4_ctb_x - 1;
ctby_tl_l = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_tl_r = ps_sao_ctxt->i4_ctb_x;
ctby_tl_r = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_tl_d = ps_sao_ctxt->i4_ctb_x - 1;
ctby_tl_d = ps_sao_ctxt->i4_ctb_y;
ctbx_tl = ps_sao_ctxt->i4_ctb_x - 1;
ctby_tl = ps_sao_ctxt->i4_ctb_y - 1;
}
if(!ps_slice_hdr->i1_first_slice_in_pic_flag)
{
/*Calculate slice indices for neighbor pixels*/
idx_tl = pu1_slice_idx[ctbx_tl + (ctby_tl * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[2] = au4_idx_tl[4] = *(pu1_slice_idx + ctbx_tl_t + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb));
au4_idx_tl[0] = pu1_slice_idx[ctbx_tl_l + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[1] = au4_idx_tl[5] = pu1_slice_idx[ctbx_tl_r + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[3] = au4_idx_tl[6] = pu1_slice_idx[ctbx_tl_d + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[7] = pu1_slice_idx[ctbx_tl_d + 1 + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
if((0 == (1 << log2_ctb_size) - sao_wd_luma))
{
if(ps_sao_ctxt->i4_ctb_x == 1)
{
au4_idx_tl[6] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[6] = pu1_slice_idx[(ctbx_tl_d - 1) + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
}
if(ps_sao_ctxt->i4_ctb_y == 1)
{
au4_idx_tl[5] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[5] = pu1_slice_idx[(ctbx_tl_l + 1) + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[4] = pu1_slice_idx[(ctbx_tl_t - 1) + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb)];
}
au4_idx_tl[7] = pu1_slice_idx[(ctbx_tl_d + 1) + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
}
/* Verify that the neighbor ctbs dont cross pic boundary.
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags.
* Hence, for top and left pixels, current ctb flag is checked. For right and down pixels,
* the respective pixel's flags are checked
*/
if((0 == (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma))
{
au4_ilf_across_tile_slice_enable[4] = 0;
au4_ilf_across_tile_slice_enable[6] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[6] = (ps_slice_hdr_base + au4_idx_tl[6])->i1_slice_loop_filter_across_slices_enabled_flag;
}
if((0 == (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - sao_ht_luma))
{
au4_ilf_across_tile_slice_enable[5] = 0;
au4_ilf_across_tile_slice_enable[4] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[4] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
}
au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[0] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[1] = (ps_slice_hdr_base + au4_idx_tl[1])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[3] = (ps_slice_hdr_base + au4_idx_tl[3])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[7] = (ps_slice_hdr_base + au4_idx_tl[7])->i1_slice_loop_filter_across_slices_enabled_flag;
if(au4_idx_tl[5] > idx_tl)
{
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + au4_idx_tl[5])->i1_slice_loop_filter_across_slices_enabled_flag;
}
/*
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags.
* Hence, for top and left pixels, current ctb flag is checked. For right and down pixels,
* the respective pixel's flags are checked
*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_tl[i] != idx_tl)
{
au1_tile_slice_boundary[i] = 1;
}
else
{
au4_ilf_across_tile_slice_enable[i] = 1;
}
}
ps_codec->s_func_selector.ihevc_memset_mul_8_fptr((UWORD8 *)au4_idx_tl, 0, 8 * sizeof(WORD32));
}
if(ps_pps->i1_tiles_enabled_flag)
{
/* Calculate availability flags at slice boundary */
if(((ps_tile->u1_pos_x == ps_sao_ctxt->i4_ctb_x) || (ps_tile->u1_pos_y == ps_sao_ctxt->i4_ctb_y)) && (!((0 == ps_tile->u1_pos_x) && (0 == ps_tile->u1_pos_y))))
{
/*If ilf across tiles is enabled, boundary availability for tiles is not checked. */
if(!ps_pps->i1_loop_filter_across_tiles_enabled_flag)
{
/*Set the boundary arrays*/
/*Calculate tile indices for neighbor pixels*/
idx_tl = pu1_tile_idx[ctbx_tl + (ctby_tl * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[2] = au4_idx_tl[4] = *(pu1_tile_idx + ctbx_tl_t + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb));
au4_idx_tl[0] = pu1_tile_idx[ctbx_tl_l + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[1] = au4_idx_tl[5] = pu1_tile_idx[ctbx_tl_r + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[3] = au4_idx_tl[6] = pu1_tile_idx[ctbx_tl_d + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[7] = pu1_tile_idx[ctbx_tl_d + 1 + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
if((0 == (1 << log2_ctb_size) - sao_wd_luma))
{
if(ps_sao_ctxt->i4_ctb_x == 1)
{
au4_idx_tl[6] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[6] = pu1_tile_idx[(ctbx_tl_d - 1) + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
}
if(ps_sao_ctxt->i4_ctb_y == 1)
{
au4_idx_tl[5] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[5] = pu1_tile_idx[(ctbx_tl_l + 1) + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[4] = pu1_tile_idx[(ctbx_tl_t - 1) + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb)];
}
au4_idx_tl[7] = pu1_tile_idx[(ctbx_tl_d + 1) + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the tile boundary*/
if(au4_idx_tl[i] != idx_tl)
{
au1_tile_slice_boundary[i] |= 1;
au4_ilf_across_tile_slice_enable[i] &= ps_pps->i1_loop_filter_across_tiles_enabled_flag; //=0
}
}
}
}
}
/*Set availability flags based on tile and slice boundaries*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if((au1_tile_slice_boundary[i]) && !(au4_ilf_across_tile_slice_enable[i]))
{
au1_avail_luma[i] = 0;
}
}
}
}
if(0 == (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma)
{
au1_avail_luma[0] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[6] = 0;
}
if(ps_sps->i2_pic_wd_in_ctb == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_luma[1] = 0;
au1_avail_luma[5] = 0;
au1_avail_luma[7] = 0;
}
//y==1 case
if((0 == (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - sao_ht_luma))
{
au1_avail_luma[2] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[5] = 0;
}
if(ps_sps->i2_pic_ht_in_ctb == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_luma[3] = 0;
au1_avail_luma[6] = 0;
au1_avail_luma[7] = 0;
}
{
au1_src_top_right[0] = pu1_src_top_luma[sao_wd_luma];
u1_sao_src_top_left_luma_bot_left = pu1_src_left_luma[sao_ht_luma];
ps_codec->apf_sao_luma[ps_sao->b3_y_type_idx - 2](pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
pu1_sao_src_luma_top_left_ctb,
au1_src_top_right,
&u1_sao_src_top_left_luma_bot_left,
au1_avail_luma,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma);
}
}
}
else if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
pu1_sao_src_luma_top_left_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
if(ps_slice_hdr_top_left->i1_slice_sao_chroma_flag)
{
if(0 == ps_sao->b3_cb_type_idx)
{
for(row = 0; row < sao_ht_chroma; row++)
{
pu1_src_left_chroma[2 * row] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 2)];
pu1_src_left_chroma[2 * row + 1] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 1)];
}
pu1_sao_src_chroma_top_left_ctb[0] = pu1_src_top_chroma[sao_wd_chroma - 2];
pu1_sao_src_chroma_top_left_ctb[1] = pu1_src_top_chroma[sao_wd_chroma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_chroma, &pu1_src_chroma[(sao_ht_chroma - 1) * src_strd], sao_wd_chroma);
}
else if(1 == ps_sao->b3_cb_type_idx)
{
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
if(chroma_yuv420sp_vu)
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
ps_sao->b5_cr_band_pos,
ps_sao->b5_cb_band_pos,
ai1_offset_cr,
ai1_offset_cb,
sao_wd_chroma,
sao_ht_chroma
);
}
else
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
ps_sao->b5_cb_band_pos,
ps_sao->b5_cr_band_pos,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma
);
}
}
else // if(2 <= ps_sao->b3_cb_type_idx)
{
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
for(i = 0; i < 8; i++)
{
au1_avail_chroma[i] = 255;
au1_tile_slice_boundary[i] = 0;
au4_idx_tl[i] = 0;
au4_ilf_across_tile_slice_enable[i] = 1;
}
/*In case of slices*/
{
if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
if((0 == (1 << log2_ctb_size) - sao_wd_chroma) && (ps_sao_ctxt->i4_ctb_y > 1) && (ps_sao_ctxt->i4_ctb_x > 1))
{
ctby_tl_t = ps_sao_ctxt->i4_ctb_y - 2;
ctbx_tl_l = ps_sao_ctxt->i4_ctb_x - 2;
}
else if(!(0 == (1 << log2_ctb_size) - sao_wd_chroma))
{
ctby_tl_t = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_tl_l = ps_sao_ctxt->i4_ctb_x - 1;
}
ctbx_tl_t = ps_sao_ctxt->i4_ctb_x - 1;
ctby_tl_l = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_tl_r = ps_sao_ctxt->i4_ctb_x;
ctby_tl_r = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_tl_d = ps_sao_ctxt->i4_ctb_x - 1;
ctby_tl_d = ps_sao_ctxt->i4_ctb_y;
ctbx_tl = ps_sao_ctxt->i4_ctb_x - 1;
ctby_tl = ps_sao_ctxt->i4_ctb_y - 1;
if(!ps_slice_hdr->i1_first_slice_in_pic_flag)
{
idx_tl = pu1_slice_idx[ctbx_tl + (ctby_tl * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[2] = au4_idx_tl[4] = *(pu1_slice_idx + ctbx_tl_t + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb));
au4_idx_tl[0] = pu1_slice_idx[ctbx_tl_l + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[1] = au4_idx_tl[5] = pu1_slice_idx[ctbx_tl_r + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[3] = au4_idx_tl[6] = pu1_slice_idx[ctbx_tl_d + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[7] = pu1_slice_idx[ctbx_tl_d + 1 + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
if((0 == (1 << log2_ctb_size) - sao_wd_chroma))
{
if(ps_sao_ctxt->i4_ctb_x == 1)
{
au4_idx_tl[6] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[6] = pu1_slice_idx[(ctbx_tl_d - 1) + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
}
if(ps_sao_ctxt->i4_ctb_y == 1)
{
au4_idx_tl[5] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[5] = pu1_slice_idx[(ctbx_tl_l + 1) + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[4] = pu1_slice_idx[(ctbx_tl_t - 1) + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb)];
}
au4_idx_tl[7] = pu1_slice_idx[(ctbx_tl_d + 1) + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
}
/* Verify that the neighbor ctbs don't cross pic boundary
* Also, the ILF flag belonging to the higher pixel address (between neighbor and current pixels) must be assigned*/
if((0 == (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma))
{
au4_ilf_across_tile_slice_enable[4] = 0;
au4_ilf_across_tile_slice_enable[6] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[6] = (ps_slice_hdr_base + au4_idx_tl[6])->i1_slice_loop_filter_across_slices_enabled_flag;
}
if((0 == (ps_sao_ctxt->i4_ctb_y << (log2_ctb_size - 1)) - sao_ht_chroma))
{
au4_ilf_across_tile_slice_enable[5] = 0;
au4_ilf_across_tile_slice_enable[4] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[4] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + au4_idx_tl[5])->i1_slice_loop_filter_across_slices_enabled_flag;
}
au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[0] = (ps_slice_hdr_base + idx_tl)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[1] = (ps_slice_hdr_base + au4_idx_tl[1])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[3] = (ps_slice_hdr_base + au4_idx_tl[3])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[7] = (ps_slice_hdr_base + au4_idx_tl[7])->i1_slice_loop_filter_across_slices_enabled_flag;
/*
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags
*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_tl[i] != idx_tl)
{
au1_tile_slice_boundary[i] = 1;
}
else
{
au4_ilf_across_tile_slice_enable[i] = 1;
}
}
/*Reset indices*/
for(i = 0; i < 8; i++)
{
au4_idx_tl[i] = 0;
}
}
if(ps_pps->i1_tiles_enabled_flag)
{
/* Calculate availability flags at slice boundary */
if(((ps_tile->u1_pos_x == ps_sao_ctxt->i4_ctb_x) || (ps_tile->u1_pos_y == ps_sao_ctxt->i4_ctb_y)) && (!((0 == ps_tile->u1_pos_x) && (0 == ps_tile->u1_pos_y))))
{
/*If ilf across tiles is enabled, boundary availability for tiles is not checked. */
if(!ps_pps->i1_loop_filter_across_tiles_enabled_flag)
{
/*Set the boundary arrays*/
/*Calculate tile indices for neighbor pixels*/
idx_tl = pu1_tile_idx[ctbx_tl + (ctby_tl * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[2] = au4_idx_tl[4] = *(pu1_tile_idx + ctbx_tl_t + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb));
au4_idx_tl[0] = pu1_tile_idx[ctbx_tl_l + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[1] = au4_idx_tl[5] = pu1_tile_idx[ctbx_tl_r + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[3] = au4_idx_tl[6] = pu1_tile_idx[ctbx_tl_d + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[7] = pu1_tile_idx[ctbx_tl_d + 1 + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
if((0 == (1 << log2_ctb_size) - sao_wd_luma))
{
if(ps_sao_ctxt->i4_ctb_x == 1)
{
au4_idx_tl[6] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[6] = pu1_tile_idx[(ctbx_tl_d - 1) + (ctby_tl_r * ps_sps->i2_pic_wd_in_ctb)];
}
if(ps_sao_ctxt->i4_ctb_y == 1)
{
au4_idx_tl[5] = -1;
au4_idx_tl[4] = -1;
}
else
{
au4_idx_tl[5] = pu1_tile_idx[(ctbx_tl_l + 1) + (ctby_tl_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_tl[4] = pu1_tile_idx[(ctbx_tl_t - 1) + (ctby_tl_t * ps_sps->i2_pic_wd_in_ctb)];
}
au4_idx_tl[7] = pu1_tile_idx[(ctbx_tl_d + 1) + (ctby_tl_d * ps_sps->i2_pic_wd_in_ctb)];
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the tile boundary*/
if(au4_idx_tl[i] != idx_tl)
{
au1_tile_slice_boundary[i] |= 1;
au4_ilf_across_tile_slice_enable[i] &= ps_pps->i1_loop_filter_across_tiles_enabled_flag; //=0
}
}
}
}
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if((au1_tile_slice_boundary[i]) && !(au4_ilf_across_tile_slice_enable[i]))
{
au1_avail_chroma[i] = 0;
}
}
}
}
if(0 == (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma)
{
au1_avail_chroma[0] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[6] = 0;
}
if(ps_sps->i2_pic_wd_in_ctb == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_chroma[1] = 0;
au1_avail_chroma[5] = 0;
au1_avail_chroma[7] = 0;
}
if(0 == (ps_sao_ctxt->i4_ctb_y << (log2_ctb_size - 1)) - sao_ht_chroma)
{
au1_avail_chroma[2] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[5] = 0;
}
if(ps_sps->i2_pic_ht_in_ctb == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_chroma[3] = 0;
au1_avail_chroma[6] = 0;
au1_avail_chroma[7] = 0;
}
{
au1_src_top_right[0] = pu1_src_top_chroma[sao_wd_chroma];
au1_src_top_right[1] = pu1_src_top_chroma[sao_wd_chroma + 1];
au1_sao_src_top_left_chroma_bot_left[0] = pu1_src_left_chroma[2 * sao_ht_chroma];
au1_sao_src_top_left_chroma_bot_left[1] = pu1_src_left_chroma[2 * sao_ht_chroma + 1];
if((ctb_size == 16) && (ps_sao_ctxt->i4_ctb_y != ps_sps->i2_pic_ht_in_ctb - 1))
{
au1_sao_src_top_left_chroma_bot_left[0] = pu1_src_chroma[sao_ht_chroma * src_strd - 2];
au1_sao_src_top_left_chroma_bot_left[1] = pu1_src_chroma[sao_ht_chroma * src_strd - 1];
}
if(chroma_yuv420sp_vu)
{
ps_codec->apf_sao_chroma[ps_sao->b3_cb_type_idx - 2](pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
au1_src_top_right,
au1_sao_src_top_left_chroma_bot_left,
au1_avail_chroma,
ai1_offset_cr,
ai1_offset_cb,
sao_wd_chroma,
sao_ht_chroma);
}
else
{
ps_codec->apf_sao_chroma[ps_sao->b3_cb_type_idx - 2](pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
au1_src_top_right,
au1_sao_src_top_left_chroma_bot_left,
au1_avail_chroma,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma);
}
}
}
}
else if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
for(row = 0; row < sao_ht_chroma; row++)
{
pu1_src_left_chroma[2 * row] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 2)];
pu1_src_left_chroma[2 * row + 1] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 1)];
}
pu1_sao_src_chroma_top_left_ctb[0] = pu1_src_top_chroma[sao_wd_chroma - 2];
pu1_sao_src_chroma_top_left_ctb[1] = pu1_src_top_chroma[sao_wd_chroma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_chroma, &pu1_src_chroma[(sao_ht_chroma - 1) * src_strd], sao_wd_chroma);
}
pu1_src_luma += sao_wd_luma + sao_ht_luma * src_strd;
pu1_src_chroma += sao_wd_chroma + sao_ht_chroma * src_strd;
ps_sao += (1 + ps_sps->i2_pic_wd_in_ctb);
}
/* Top CTB */
if((ps_sao_ctxt->i4_ctb_y > 0))
{
WORD32 sao_wd_luma = ctb_size - SAO_SHIFT_CTB;
WORD32 sao_wd_chroma = ctb_size - 2 * SAO_SHIFT_CTB;
WORD32 sao_ht_luma = SAO_SHIFT_CTB;
WORD32 sao_ht_chroma = SAO_SHIFT_CTB;
WORD32 ctbx_t_t = 0, ctbx_t_l = 0, ctbx_t_r = 0, ctbx_t_d = 0, ctbx_t = 0;
WORD32 ctby_t_t = 0, ctby_t_l = 0, ctby_t_r = 0, ctby_t_d = 0, ctby_t = 0;
WORD32 au4_idx_t[8], idx_t;
WORD32 remaining_cols;
slice_header_t *ps_slice_hdr_top;
{
WORD32 top_ctb_indx = (ps_sao_ctxt->i4_ctb_y - 1) * ps_sps->i2_pic_wd_in_ctb +
(ps_sao_ctxt->i4_ctb_x);
ps_slice_hdr_top = ps_slice_hdr_base + pu1_slice_idx[top_ctb_indx];
}
remaining_cols = ps_sps->i2_pic_width_in_luma_samples - ((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) + sao_wd_luma);
if(remaining_cols <= SAO_SHIFT_CTB)
{
sao_wd_luma += remaining_cols;
}
remaining_cols = ps_sps->i2_pic_width_in_luma_samples - ((ps_sao_ctxt->i4_ctb_x << log2_ctb_size) + sao_wd_chroma);
if(remaining_cols <= 2 * SAO_SHIFT_CTB)
{
sao_wd_chroma += remaining_cols;
}
pu1_src_luma -= (sao_ht_luma * src_strd);
pu1_src_chroma -= (sao_ht_chroma * src_strd);
ps_sao -= (ps_sps->i2_pic_wd_in_ctb);
pu1_src_top_luma = ps_sao_ctxt->pu1_sao_src_top_luma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size);
pu1_src_top_chroma = ps_sao_ctxt->pu1_sao_src_top_chroma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size);
pu1_src_left_luma = ps_sao_ctxt->pu1_sao_src_left_luma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - sao_ht_chroma;
pu1_src_left_chroma = ps_sao_ctxt->pu1_sao_src_left_chroma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - (2 * sao_ht_chroma);
if(0 != sao_wd_luma)
{
if(ps_slice_hdr_top->i1_slice_sao_luma_flag)
{
if(0 == ps_sao->b3_y_type_idx)
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
pu1_sao_src_luma_top_left_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
else if(1 == ps_sao->b3_y_type_idx)
{
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
ps_codec->s_func_selector.ihevc_sao_band_offset_luma_fptr(pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
pu1_sao_src_luma_top_left_ctb,
ps_sao->b5_y_band_pos,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma
);
}
else // if(2 <= ps_sao->b3_y_type_idx)
{
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
ps_codec->s_func_selector.ihevc_memset_mul_8_fptr(au1_avail_luma, 255, 8);
ps_codec->s_func_selector.ihevc_memset_mul_8_fptr(au1_tile_slice_boundary, 0, 8);
ps_codec->s_func_selector.ihevc_memset_mul_8_fptr((UWORD8 *)au4_idx_t, 0, 8 * sizeof(WORD32));
for(i = 0; i < 8; i++)
{
au4_ilf_across_tile_slice_enable[i] = 1;
}
/******************************************************************
* Derive the Top-left CTB's neighbor pixel's slice indices.
*
* T_T
* ____________
* | | |
* | T_L| T |T_R
* | | ______|____
* | | T_D | |
* | | | |
* |____|_______| |
* | |
* | |
* |____________|
*
*****************************************************************/
/*In case of slices*/
{
if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
ctbx_t_t = ps_sao_ctxt->i4_ctb_x;
ctby_t_t = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_t_l = ps_sao_ctxt->i4_ctb_x - 1;
ctby_t_l = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_t_r = ps_sao_ctxt->i4_ctb_x;
ctby_t_r = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_t_d = ps_sao_ctxt->i4_ctb_x;
ctby_t_d = ps_sao_ctxt->i4_ctb_y;
ctbx_t = ps_sao_ctxt->i4_ctb_x;
ctby_t = ps_sao_ctxt->i4_ctb_y - 1;
if(!ps_slice_hdr->i1_first_slice_in_pic_flag)
{
/*Calculate neighbor ctb slice indices*/
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au4_idx_t[0] = -1;
au4_idx_t[6] = -1;
au4_idx_t[4] = -1;
}
else
{
au4_idx_t[0] = au4_idx_t[4] = pu1_slice_idx[ctbx_t_l + (ctby_t_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[6] = pu1_slice_idx[ctbx_t_d - 1 + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
}
idx_t = pu1_slice_idx[ctbx_t + (ctby_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[2] = au4_idx_t[5] = pu1_slice_idx[ctbx_t_t + (ctby_t_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[1] = pu1_slice_idx[ctbx_t_r + (ctby_t_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[3] = au4_idx_t[7] = pu1_slice_idx[ctbx_t_d + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
/*Verify that the neighbor ctbs don't cross pic boundary.*/
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au4_ilf_across_tile_slice_enable[4] = 0;
au4_ilf_across_tile_slice_enable[6] = 0;
au4_ilf_across_tile_slice_enable[0] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[4] = au4_ilf_across_tile_slice_enable[0] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[6] = (ps_slice_hdr_base + au4_idx_t[6])->i1_slice_loop_filter_across_slices_enabled_flag;
}
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[1] = (ps_slice_hdr_base + au4_idx_t[1])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[3] = (ps_slice_hdr_base + au4_idx_t[3])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[7] = (ps_slice_hdr_base + au4_idx_t[7])->i1_slice_loop_filter_across_slices_enabled_flag;
if(au4_idx_t[6] < idx_t)
{
au4_ilf_across_tile_slice_enable[6] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
}
/*
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags
*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_t[i] != idx_t)
{
au1_tile_slice_boundary[i] = 1;
/*Check for slice flag at such boundaries*/
}
else
{
au4_ilf_across_tile_slice_enable[i] = 1;
}
}
/*Reset indices*/
for(i = 0; i < 8; i++)
{
au4_idx_t[i] = 0;
}
}
if(ps_pps->i1_tiles_enabled_flag)
{
/* Calculate availability flags at slice boundary */
if(((ps_tile->u1_pos_x == ps_sao_ctxt->i4_ctb_x) || (ps_tile->u1_pos_y == ps_sao_ctxt->i4_ctb_y)) && (!((0 == ps_tile->u1_pos_x) && (0 == ps_tile->u1_pos_y))))
{
/*If ilf across tiles is enabled, boundary availability for tiles is not checked. */
if(!ps_pps->i1_loop_filter_across_tiles_enabled_flag)
{
/*Calculate neighbor ctb slice indices*/
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au4_idx_t[0] = -1;
au4_idx_t[6] = -1;
au4_idx_t[4] = -1;
}
else
{
au4_idx_t[0] = au4_idx_t[4] = pu1_tile_idx[ctbx_t_l + (ctby_t_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[6] = pu1_tile_idx[ctbx_t_d - 1 + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
}
idx_t = pu1_tile_idx[ctbx_t + (ctby_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[2] = au4_idx_t[5] = pu1_tile_idx[ctbx_t_t + (ctby_t_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[1] = pu1_tile_idx[ctbx_t_r + (ctby_t_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[3] = au4_idx_t[7] = pu1_tile_idx[ctbx_t_d + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the tile boundary*/
if(au4_idx_t[i] != idx_t)
{
au1_tile_slice_boundary[i] |= 1;
au4_ilf_across_tile_slice_enable[i] &= ps_pps->i1_loop_filter_across_tiles_enabled_flag;
}
}
}
}
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if((au1_tile_slice_boundary[i]) && !(au4_ilf_across_tile_slice_enable[i]))
{
au1_avail_luma[i] = 0;
}
}
}
}
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_luma[0] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[6] = 0;
}
if(ps_sps->i2_pic_width_in_luma_samples - (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) <= sao_wd_luma)
{
au1_avail_luma[1] = 0;
au1_avail_luma[5] = 0;
au1_avail_luma[7] = 0;
}
if(0 == (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) - sao_ht_luma)
{
au1_avail_luma[2] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[5] = 0;
}
if(ps_sps->i2_pic_ht_in_ctb == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_luma[3] = 0;
au1_avail_luma[6] = 0;
au1_avail_luma[7] = 0;
}
{
au1_src_top_right[0] = pu1_sao_src_top_left_luma_top_right[0];
u1_sao_src_top_left_luma_bot_left = pu1_src_luma[sao_ht_luma * src_strd - 1];
ps_codec->apf_sao_luma[ps_sao->b3_y_type_idx - 2](pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
pu1_sao_src_luma_top_left_ctb,
au1_src_top_right,
&u1_sao_src_top_left_luma_bot_left,
au1_avail_luma,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma);
}
}
}
else if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
pu1_sao_src_luma_top_left_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
}
if(0 != sao_wd_chroma)
{
if(ps_slice_hdr_top->i1_slice_sao_chroma_flag)
{
if(0 == ps_sao->b3_cb_type_idx)
{
for(row = 0; row < sao_ht_chroma; row++)
{
pu1_src_left_chroma[2 * row] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 2)];
pu1_src_left_chroma[2 * row + 1] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 1)];
}
pu1_sao_src_chroma_top_left_ctb[0] = pu1_src_top_chroma[sao_wd_chroma - 2];
pu1_sao_src_chroma_top_left_ctb[1] = pu1_src_top_chroma[sao_wd_chroma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_chroma, &pu1_src_chroma[(sao_ht_chroma - 1) * src_strd], sao_wd_chroma);
}
else if(1 == ps_sao->b3_cb_type_idx)
{
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
if(chroma_yuv420sp_vu)
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
ps_sao->b5_cr_band_pos,
ps_sao->b5_cb_band_pos,
ai1_offset_cr,
ai1_offset_cb,
sao_wd_chroma,
sao_ht_chroma
);
}
else
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
ps_sao->b5_cb_band_pos,
ps_sao->b5_cr_band_pos,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma
);
}
}
else // if(2 <= ps_sao->b3_cb_type_idx)
{
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
for(i = 0; i < 8; i++)
{
au1_avail_chroma[i] = 255;
au1_tile_slice_boundary[i] = 0;
au4_idx_t[i] = 0;
au4_ilf_across_tile_slice_enable[i] = 1;
}
{
if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
ctbx_t_t = ps_sao_ctxt->i4_ctb_x;
ctby_t_t = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_t_l = ps_sao_ctxt->i4_ctb_x - 1;
ctby_t_l = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_t_r = ps_sao_ctxt->i4_ctb_x;
ctby_t_r = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_t_d = ps_sao_ctxt->i4_ctb_x;
ctby_t_d = ps_sao_ctxt->i4_ctb_y;
ctbx_t = ps_sao_ctxt->i4_ctb_x;
ctby_t = ps_sao_ctxt->i4_ctb_y - 1;
if(!ps_slice_hdr->i1_first_slice_in_pic_flag)
{
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au4_idx_t[0] = -1;
au4_idx_t[6] = -1;
au4_idx_t[4] = -1;
}
else
{
au4_idx_t[0] = au4_idx_t[4] = pu1_slice_idx[ctbx_t_l + (ctby_t_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[6] = pu1_slice_idx[ctbx_t_d - 1 + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
}
idx_t = pu1_slice_idx[ctbx_t + (ctby_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[2] = au4_idx_t[5] = pu1_slice_idx[ctbx_t_t + (ctby_t_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[1] = pu1_slice_idx[ctbx_t_r + (ctby_t_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[3] = au4_idx_t[7] = pu1_slice_idx[ctbx_t_d + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
/*Verify that the neighbor ctbs don't cross pic boundary.*/
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au4_ilf_across_tile_slice_enable[4] = 0;
au4_ilf_across_tile_slice_enable[6] = 0;
au4_ilf_across_tile_slice_enable[0] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[4] = au4_ilf_across_tile_slice_enable[0] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[6] = (ps_slice_hdr_base + au4_idx_t[6])->i1_slice_loop_filter_across_slices_enabled_flag;
}
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + au4_idx_t[5])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[1] = (ps_slice_hdr_base + au4_idx_t[1])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[3] = (ps_slice_hdr_base + au4_idx_t[3])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[7] = (ps_slice_hdr_base + au4_idx_t[7])->i1_slice_loop_filter_across_slices_enabled_flag;
if(idx_t > au4_idx_t[6])
{
au4_ilf_across_tile_slice_enable[6] = (ps_slice_hdr_base + idx_t)->i1_slice_loop_filter_across_slices_enabled_flag;
}
/*
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags
*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_t[i] != idx_t)
{
au1_tile_slice_boundary[i] = 1;
}
else
{
/*Indicates that the neighbour belongs to same/dependent slice*/
au4_ilf_across_tile_slice_enable[i] = 1;
}
}
/*Reset indices*/
for(i = 0; i < 8; i++)
{
au4_idx_t[i] = 0;
}
}
if(ps_pps->i1_tiles_enabled_flag)
{
/* Calculate availability flags at slice boundary */
if(((ps_tile->u1_pos_x == ps_sao_ctxt->i4_ctb_x) || (ps_tile->u1_pos_y == ps_sao_ctxt->i4_ctb_y)) && (!((0 == ps_tile->u1_pos_x) && (0 == ps_tile->u1_pos_y))))
{
/*If ilf across tiles is enabled, boundary availability for tiles is not checked. */
if(!ps_pps->i1_loop_filter_across_tiles_enabled_flag)
{
/*Calculate neighbor ctb slice indices*/
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au4_idx_t[0] = -1;
au4_idx_t[6] = -1;
au4_idx_t[4] = -1;
}
else
{
au4_idx_t[0] = au4_idx_t[4] = pu1_tile_idx[ctbx_t_l + (ctby_t_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[6] = pu1_tile_idx[ctbx_t_d - 1 + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
}
idx_t = pu1_tile_idx[ctbx_t + (ctby_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[2] = au4_idx_t[5] = pu1_tile_idx[ctbx_t_t + (ctby_t_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[1] = pu1_tile_idx[ctbx_t_r + (ctby_t_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_t[3] = au4_idx_t[7] = pu1_tile_idx[ctbx_t_d + (ctby_t_d * ps_sps->i2_pic_wd_in_ctb)];
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the tile boundary*/
if(au4_idx_t[i] != idx_t)
{
au1_tile_slice_boundary[i] |= 1;
au4_ilf_across_tile_slice_enable[i] &= ps_pps->i1_loop_filter_across_tiles_enabled_flag;
}
}
}
}
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if((au1_tile_slice_boundary[i]) && !(au4_ilf_across_tile_slice_enable[i]))
{
au1_avail_chroma[i] = 0;
}
}
}
}
if(0 == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_chroma[0] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[6] = 0;
}
if(ps_sps->i2_pic_width_in_luma_samples - (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) <= sao_wd_chroma)
{
au1_avail_chroma[1] = 0;
au1_avail_chroma[5] = 0;
au1_avail_chroma[7] = 0;
}
if(0 == (ps_sao_ctxt->i4_ctb_y << (log2_ctb_size - 1)) - sao_ht_chroma)
{
au1_avail_chroma[2] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[5] = 0;
}
if(ps_sps->i2_pic_ht_in_ctb == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_chroma[3] = 0;
au1_avail_chroma[6] = 0;
au1_avail_chroma[7] = 0;
}
{
au1_src_top_right[0] = pu1_sao_src_top_left_chroma_top_right[0];
au1_src_top_right[1] = pu1_sao_src_top_left_chroma_top_right[1];
au1_sao_src_top_left_chroma_bot_left[0] = pu1_src_chroma[sao_ht_chroma * src_strd - 2];
au1_sao_src_top_left_chroma_bot_left[1] = pu1_src_chroma[sao_ht_chroma * src_strd - 1];
if(chroma_yuv420sp_vu)
{
ps_codec->apf_sao_chroma[ps_sao->b3_cb_type_idx - 2](pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
au1_src_top_right,
au1_sao_src_top_left_chroma_bot_left,
au1_avail_chroma,
ai1_offset_cr,
ai1_offset_cb,
sao_wd_chroma,
sao_ht_chroma);
}
else
{
ps_codec->apf_sao_chroma[ps_sao->b3_cb_type_idx - 2](pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_chroma_top_left_ctb,
au1_src_top_right,
au1_sao_src_top_left_chroma_bot_left,
au1_avail_chroma,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma);
}
}
}
}
else if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
for(row = 0; row < sao_ht_chroma; row++)
{
pu1_src_left_chroma[2 * row] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 2)];
pu1_src_left_chroma[2 * row + 1] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 1)];
}
pu1_sao_src_chroma_top_left_ctb[0] = pu1_src_top_chroma[sao_wd_chroma - 2];
pu1_sao_src_chroma_top_left_ctb[1] = pu1_src_top_chroma[sao_wd_chroma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_chroma, &pu1_src_chroma[(sao_ht_chroma - 1) * src_strd], sao_wd_chroma);
}
}
pu1_src_luma += sao_ht_luma * src_strd;
pu1_src_chroma += sao_ht_chroma * src_strd;
ps_sao += (ps_sps->i2_pic_wd_in_ctb);
}
/* Left CTB */
if(ps_sao_ctxt->i4_ctb_x > 0)
{
WORD32 sao_wd_luma = SAO_SHIFT_CTB;
WORD32 sao_wd_chroma = 2 * SAO_SHIFT_CTB;
WORD32 sao_ht_luma = ctb_size - SAO_SHIFT_CTB;
WORD32 sao_ht_chroma = ctb_size / 2 - SAO_SHIFT_CTB;
WORD32 ctbx_l_t = 0, ctbx_l_l = 0, ctbx_l_r = 0, ctbx_l_d = 0, ctbx_l = 0;
WORD32 ctby_l_t = 0, ctby_l_l = 0, ctby_l_r = 0, ctby_l_d = 0, ctby_l = 0;
WORD32 au4_idx_l[8], idx_l;
WORD32 remaining_rows;
slice_header_t *ps_slice_hdr_left;
{
WORD32 left_ctb_indx = (ps_sao_ctxt->i4_ctb_y) * ps_sps->i2_pic_wd_in_ctb +
(ps_sao_ctxt->i4_ctb_x - 1);
ps_slice_hdr_left = ps_slice_hdr_base + pu1_slice_idx[left_ctb_indx];
}
remaining_rows = ps_sps->i2_pic_height_in_luma_samples - ((ps_sao_ctxt->i4_ctb_y << log2_ctb_size) + sao_ht_luma);
if(remaining_rows <= SAO_SHIFT_CTB)
{
sao_ht_luma += remaining_rows;
}
remaining_rows = ps_sps->i2_pic_height_in_luma_samples / 2 - ((ps_sao_ctxt->i4_ctb_y << (log2_ctb_size - 1)) + sao_ht_chroma);
if(remaining_rows <= SAO_SHIFT_CTB)
{
sao_ht_chroma += remaining_rows;
}
pu1_src_luma -= sao_wd_luma;
pu1_src_chroma -= sao_wd_chroma;
ps_sao -= 1;
pu1_src_top_luma = ps_sao_ctxt->pu1_sao_src_top_luma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma;
pu1_src_top_chroma = ps_sao_ctxt->pu1_sao_src_top_chroma + (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma;
pu1_src_left_luma = ps_sao_ctxt->pu1_sao_src_left_luma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size);
pu1_src_left_chroma = ps_sao_ctxt->pu1_sao_src_left_chroma + (ps_sao_ctxt->i4_ctb_y << log2_ctb_size);
if(0 != sao_ht_luma)
{
if(ps_slice_hdr_left->i1_slice_sao_luma_flag)
{
if(0 == ps_sao->b3_y_type_idx)
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
/*Update in next location*/
pu1_sao_src_top_left_luma_curr_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
else if(1 == ps_sao->b3_y_type_idx)
{
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
ps_codec->s_func_selector.ihevc_sao_band_offset_luma_fptr(pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
pu1_sao_src_top_left_luma_curr_ctb,
ps_sao->b5_y_band_pos,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma
);
}
else // if(2 <= ps_sao->b3_y_type_idx)
{
ai1_offset_y[1] = ps_sao->b4_y_offset_1;
ai1_offset_y[2] = ps_sao->b4_y_offset_2;
ai1_offset_y[3] = ps_sao->b4_y_offset_3;
ai1_offset_y[4] = ps_sao->b4_y_offset_4;
for(i = 0; i < 8; i++)
{
au1_avail_luma[i] = 255;
au1_tile_slice_boundary[i] = 0;
au4_idx_l[i] = 0;
au4_ilf_across_tile_slice_enable[i] = 1;
}
/******************************************************************
* Derive the Top-left CTB's neighbour pixel's slice indices.
*
*
* ____________
* | | |
* | L_T| |
* |____|_______|____
* | | | |
* L_L | L | L_R | |
* |____|_______| |
* | |
* L_D | |
* |____________|
*
*****************************************************************/
/*In case of slices or tiles*/
{
if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
ctbx_l_t = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l_t = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_l_l = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l_l = ps_sao_ctxt->i4_ctb_y;
ctbx_l_r = ps_sao_ctxt->i4_ctb_x;
ctby_l_r = ps_sao_ctxt->i4_ctb_y;
ctbx_l_d = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l_d = ps_sao_ctxt->i4_ctb_y;
ctbx_l = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l = ps_sao_ctxt->i4_ctb_y;
if(!ps_slice_hdr->i1_first_slice_in_pic_flag)
{
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au4_idx_l[2] = -1;
au4_idx_l[4] = -1;
au4_idx_l[5] = -1;
}
else
{
au4_idx_l[2] = au4_idx_l[4] = pu1_slice_idx[ctbx_l_t + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[5] = pu1_slice_idx[ctbx_l_t + 1 + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
}
idx_l = au4_idx_l[6] = pu1_slice_idx[ctbx_l + (ctby_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[0] = pu1_slice_idx[ctbx_l_l + (ctby_l_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[1] = au4_idx_l[7] = pu1_slice_idx[ctbx_l_r + (ctby_l_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[3] = pu1_slice_idx[ctbx_l_d + (ctby_l_d * ps_sps->i2_pic_wd_in_ctb)];
/*Verify that the neighbor ctbs don't cross pic boundary.*/
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au4_ilf_across_tile_slice_enable[2] = 0;
au4_ilf_across_tile_slice_enable[4] = 0;
au4_ilf_across_tile_slice_enable[5] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_l)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[5] = au4_ilf_across_tile_slice_enable[4] = au4_ilf_across_tile_slice_enable[2];
}
//TODO: ILF flag checks for [0] and [6] is missing.
au4_ilf_across_tile_slice_enable[1] = (ps_slice_hdr_base + au4_idx_l[1])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[3] = (ps_slice_hdr_base + au4_idx_l[3])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[7] = (ps_slice_hdr_base + au4_idx_l[7])->i1_slice_loop_filter_across_slices_enabled_flag;
if(idx_l < au4_idx_l[5])
{
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + au4_idx_l[5])->i1_slice_loop_filter_across_slices_enabled_flag;
}
/*
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags
*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_l[i] != idx_l)
{
au1_tile_slice_boundary[i] = 1;
}
else
{
au4_ilf_across_tile_slice_enable[i] = 1;
}
}
/*Reset indices*/
for(i = 0; i < 8; i++)
{
au4_idx_l[i] = 0;
}
}
if(ps_pps->i1_tiles_enabled_flag)
{
/* Calculate availability flags at slice boundary */
if(((ps_tile->u1_pos_x == ps_sao_ctxt->i4_ctb_x) || (ps_tile->u1_pos_y == ps_sao_ctxt->i4_ctb_y)) && (!((0 == ps_tile->u1_pos_x) && (0 == ps_tile->u1_pos_y))))
{
/*If ilf across tiles is enabled, boundary availability for tiles is not checked. */
if(!ps_pps->i1_loop_filter_across_tiles_enabled_flag)
{
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au4_idx_l[2] = -1;
au4_idx_l[4] = -1;
au4_idx_l[5] = -1;
}
else
{
au4_idx_l[2] = au4_idx_l[4] = pu1_tile_idx[ctbx_l_t + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[5] = pu1_tile_idx[ctbx_l_t + 1 + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
}
idx_l = au4_idx_l[6] = pu1_tile_idx[ctbx_l + (ctby_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[0] = pu1_tile_idx[ctbx_l_l + (ctby_l_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[1] = au4_idx_l[7] = pu1_tile_idx[ctbx_l_r + (ctby_l_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[3] = pu1_tile_idx[ctbx_l_d + (ctby_l_d * ps_sps->i2_pic_wd_in_ctb)];
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_l[i] != idx_l)
{
au1_tile_slice_boundary[i] |= 1;
au4_ilf_across_tile_slice_enable[i] &= ps_pps->i1_loop_filter_across_tiles_enabled_flag;
}
}
}
}
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if((au1_tile_slice_boundary[i]) && !(au4_ilf_across_tile_slice_enable[i]))
{
au1_avail_luma[i] = 0;
}
}
}
}
if(0 == (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_luma)
{
au1_avail_luma[0] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[6] = 0;
}
if(ps_sps->i2_pic_wd_in_ctb == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_luma[1] = 0;
au1_avail_luma[5] = 0;
au1_avail_luma[7] = 0;
}
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_luma[2] = 0;
au1_avail_luma[4] = 0;
au1_avail_luma[5] = 0;
}
if(ps_sps->i2_pic_height_in_luma_samples - (ps_sao_ctxt->i4_ctb_y << log2_ctb_size) <= sao_ht_luma)
{
au1_avail_luma[3] = 0;
au1_avail_luma[6] = 0;
au1_avail_luma[7] = 0;
}
{
au1_src_top_right[0] = pu1_src_top_luma[sao_wd_luma];
u1_sao_src_top_left_luma_bot_left = pu1_sao_src_top_left_luma_bot_left[0];
ps_codec->apf_sao_luma[ps_sao->b3_y_type_idx - 2](pu1_src_luma,
src_strd,
pu1_src_left_luma,
pu1_src_top_luma,
pu1_sao_src_top_left_luma_curr_ctb,
au1_src_top_right,
&u1_sao_src_top_left_luma_bot_left,
au1_avail_luma,
ai1_offset_y,
sao_wd_luma,
sao_ht_luma);
}
}
}
else if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
/* Update left, top and top-left */
for(row = 0; row < sao_ht_luma; row++)
{
pu1_src_left_luma[row] = pu1_src_luma[row * src_strd + (sao_wd_luma - 1)];
}
/*Update in next location*/
pu1_sao_src_top_left_luma_curr_ctb[0] = pu1_src_top_luma[sao_wd_luma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_luma, &pu1_src_luma[(sao_ht_luma - 1) * src_strd], sao_wd_luma);
}
}
if(0 != sao_ht_chroma)
{
if(ps_slice_hdr_left->i1_slice_sao_chroma_flag)
{
if(0 == ps_sao->b3_cb_type_idx)
{
for(row = 0; row < sao_ht_chroma; row++)
{
pu1_src_left_chroma[2 * row] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 2)];
pu1_src_left_chroma[2 * row + 1] = pu1_src_chroma[row * src_strd + (sao_wd_chroma - 1)];
}
pu1_sao_src_top_left_chroma_curr_ctb[0] = pu1_src_top_chroma[sao_wd_chroma - 2];
pu1_sao_src_top_left_chroma_curr_ctb[1] = pu1_src_top_chroma[sao_wd_chroma - 1];
ps_codec->s_func_selector.ihevc_memcpy_fptr(pu1_src_top_chroma, &pu1_src_chroma[(sao_ht_chroma - 1) * src_strd], sao_wd_chroma);
}
else if(1 == ps_sao->b3_cb_type_idx)
{
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
if(chroma_yuv420sp_vu)
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_top_left_chroma_curr_ctb,
ps_sao->b5_cr_band_pos,
ps_sao->b5_cb_band_pos,
ai1_offset_cr,
ai1_offset_cb,
sao_wd_chroma,
sao_ht_chroma
);
}
else
{
ps_codec->s_func_selector.ihevc_sao_band_offset_chroma_fptr(pu1_src_chroma,
src_strd,
pu1_src_left_chroma,
pu1_src_top_chroma,
pu1_sao_src_top_left_chroma_curr_ctb,
ps_sao->b5_cb_band_pos,
ps_sao->b5_cr_band_pos,
ai1_offset_cb,
ai1_offset_cr,
sao_wd_chroma,
sao_ht_chroma
);
}
}
else // if(2 <= ps_sao->b3_cb_type_idx)
{
ai1_offset_cb[1] = ps_sao->b4_cb_offset_1;
ai1_offset_cb[2] = ps_sao->b4_cb_offset_2;
ai1_offset_cb[3] = ps_sao->b4_cb_offset_3;
ai1_offset_cb[4] = ps_sao->b4_cb_offset_4;
ai1_offset_cr[1] = ps_sao->b4_cr_offset_1;
ai1_offset_cr[2] = ps_sao->b4_cr_offset_2;
ai1_offset_cr[3] = ps_sao->b4_cr_offset_3;
ai1_offset_cr[4] = ps_sao->b4_cr_offset_4;
for(i = 0; i < 8; i++)
{
au1_avail_chroma[i] = 255;
au1_tile_slice_boundary[i] = 0;
au4_idx_l[i] = 0;
au4_ilf_across_tile_slice_enable[i] = 1;
}
/*In case of slices*/
{
if((!ps_slice_hdr->i1_first_slice_in_pic_flag) || (ps_pps->i1_tiles_enabled_flag))
{
ctbx_l_t = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l_t = ps_sao_ctxt->i4_ctb_y - 1;
ctbx_l_l = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l_l = ps_sao_ctxt->i4_ctb_y;
ctbx_l_r = ps_sao_ctxt->i4_ctb_x;
ctby_l_r = ps_sao_ctxt->i4_ctb_y;
ctbx_l_d = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l_d = ps_sao_ctxt->i4_ctb_y;
ctbx_l = ps_sao_ctxt->i4_ctb_x - 1;
ctby_l = ps_sao_ctxt->i4_ctb_y;
if(!ps_slice_hdr->i1_first_slice_in_pic_flag)
{
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au4_idx_l[2] = -1;
au4_idx_l[4] = -1;
au4_idx_l[5] = -1;
}
else
{
au4_idx_l[2] = au4_idx_l[4] = pu1_slice_idx[ctbx_l_t + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[5] = pu1_slice_idx[ctbx_l_t + 1 + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
}
idx_l = au4_idx_l[6] = pu1_slice_idx[ctbx_l + (ctby_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[0] = pu1_slice_idx[ctbx_l_l + (ctby_l_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[1] = au4_idx_l[7] = pu1_slice_idx[ctbx_l_r + (ctby_l_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[3] = pu1_slice_idx[ctbx_l_d + (ctby_l_d * ps_sps->i2_pic_wd_in_ctb)];
/*Verify that the neighbour ctbs dont cross pic boundary.*/
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au4_ilf_across_tile_slice_enable[2] = 0;
au4_ilf_across_tile_slice_enable[4] = 0;
au4_ilf_across_tile_slice_enable[5] = 0;
}
else
{
au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_l)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[5] = au4_ilf_across_tile_slice_enable[4] = au4_ilf_across_tile_slice_enable[2];
}
if(au4_idx_l[5] > idx_l)
{
au4_ilf_across_tile_slice_enable[5] = (ps_slice_hdr_base + au4_idx_l[5])->i1_slice_loop_filter_across_slices_enabled_flag;
}
// au4_ilf_across_tile_slice_enable[5] = au4_ilf_across_tile_slice_enable[2] = (ps_slice_hdr_base + idx_l)->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[1] = (ps_slice_hdr_base + au4_idx_l[1])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[3] = (ps_slice_hdr_base + au4_idx_l[3])->i1_slice_loop_filter_across_slices_enabled_flag;
au4_ilf_across_tile_slice_enable[7] = (ps_slice_hdr_base + au4_idx_l[7])->i1_slice_loop_filter_across_slices_enabled_flag;
/*
* Between each neighbor and the current CTB, the i1_slice_loop_filter_across_slices_enabled_flag
* of the pixel having a greater address is checked. Accordingly, set the availability flags
*/
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_l[i] != idx_l)
{
au1_tile_slice_boundary[i] = 1;
}
else
{
au4_ilf_across_tile_slice_enable[i] = 1;
}
}
/*Reset indices*/
for(i = 0; i < 8; i++)
{
au4_idx_l[i] = 0;
}
}
if(ps_pps->i1_tiles_enabled_flag)
{
/* Calculate availability flags at slice boundary */
if(((ps_tile->u1_pos_x == ps_sao_ctxt->i4_ctb_x) || (ps_tile->u1_pos_y == ps_sao_ctxt->i4_ctb_y)) && (!((0 == ps_tile->u1_pos_x) && (0 == ps_tile->u1_pos_y))))
{
/*If ilf across tiles is enabled, boundary availability for tiles is not checked. */
if(!ps_pps->i1_loop_filter_across_tiles_enabled_flag)
{
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au4_idx_l[2] = -1;
au4_idx_l[4] = -1;
au4_idx_l[5] = -1;
}
else
{
au4_idx_l[2] = au4_idx_l[4] = pu1_tile_idx[ctbx_l_t + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[5] = pu1_tile_idx[ctbx_l_t + 1 + (ctby_l_t * ps_sps->i2_pic_wd_in_ctb)];
}
idx_l = au4_idx_l[6] = pu1_tile_idx[ctbx_l + (ctby_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[0] = pu1_tile_idx[ctbx_l_l + (ctby_l_l * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[1] = au4_idx_l[7] = pu1_tile_idx[ctbx_l_r + (ctby_l_r * ps_sps->i2_pic_wd_in_ctb)];
au4_idx_l[3] = pu1_tile_idx[ctbx_l_d + (ctby_l_d * ps_sps->i2_pic_wd_in_ctb)];
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if(au4_idx_l[i] != idx_l)
{
au1_tile_slice_boundary[i] |= 1;
au4_ilf_across_tile_slice_enable[i] &= ps_pps->i1_loop_filter_across_tiles_enabled_flag; //=0
}
}
}
}
}
for(i = 0; i < 8; i++)
{
/*Sets the edges that lie on the slice/tile boundary*/
if((au1_tile_slice_boundary[i]) && !(au4_ilf_across_tile_slice_enable[i]))
{
au1_avail_chroma[i] = 0;
}
}
}
}
if(0 == (ps_sao_ctxt->i4_ctb_x << log2_ctb_size) - sao_wd_chroma)
{
au1_avail_chroma[0] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[6] = 0;
}
if(ps_sps->i2_pic_wd_in_ctb == ps_sao_ctxt->i4_ctb_x)
{
au1_avail_chroma[1] = 0;
au1_avail_chroma[5] = 0;
au1_avail_chroma[7] = 0;
}
if(0 == ps_sao_ctxt->i4_ctb_y)
{
au1_avail_chroma[2] = 0;
au1_avail_chroma[4] = 0;
au1_avail_chroma[5] = 0;
}
if(ps_sps->i2_pic_height_in_luma_samples / <