431 lines
19 KiB
ArmAsm
431 lines
19 KiB
ArmAsm
///*****************************************************************************
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//*
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//* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
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//*
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//* Licensed under the Apache License, Version 2.0 (the "License");
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//* you may not use this file except in compliance with the License.
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//* You may obtain a copy of the License at:
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//*
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//* http://www.apache.org/licenses/LICENSE-2.0
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//*
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//* Unless required by applicable law or agreed to in writing, software
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//* distributed under the License is distributed on an "AS IS" BASIS,
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//* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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//* See the License for the specific language governing permissions and
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//* limitations under the License.
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//*
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//*****************************************************************************/
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///**
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//*******************************************************************************
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//* ,:file
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//* ihevc_sao_band_offset_chroma.s
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//*
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//* ,:brief
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//* Contains function definitions for inter prediction interpolation.
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//* Functions are coded using NEON intrinsics and can be compiled using@ ARM
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//* RVCT
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//*
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//* ,:author
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//* Parthiban V
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//*
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//* ,:par List of Functions:
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//*
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//*
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//* ,:remarks
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//* None
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//*
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//*******************************************************************************
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//*/
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//void ihevc_sao_band_offset_chroma(UWORD8 *pu1_src,
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// WORD32 src_strd,
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// UWORD8 *pu1_src_left,
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// UWORD8 *pu1_src_top,
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// UWORD8 *pu1_src_top_left,
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// WORD32 sao_band_pos_u,
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// WORD32 sao_band_pos_v,
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// WORD8 *pi1_sao_offset_u,
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// WORD8 *pi1_sao_offset_v,
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// WORD32 wd,
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// WORD32 ht)
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//
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//**************Variables Vs Registers*****************************************
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//x0 => *pu1_src
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//x1 => src_strd
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//x2 => *pu1_src_left
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//x3 => *pu1_src_top
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//x4 => *pu1_src_top_left 40
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//x5 => sao_band_pos_u 44
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//x6 => sao_band_pos_v 48
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//x7 => *pi1_sao_offset_u 52
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//x8 => *pi1_sao_offset_v 56
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//x9 => wd 60
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//x10=> ht 64
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.text
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.p2align 2
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.include "ihevc_neon_macros.s"
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.globl gu1_table_band_idx
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.globl ihevc_sao_band_offset_chroma_av8
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ihevc_sao_band_offset_chroma_av8:
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mov x8,#0
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mov x9,#0
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mov x10,#0
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ldr x8,[sp,#0]
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ldr w9,[sp,#8]
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ldr w10,[sp,#16]
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push_v_regs
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// stmfd sp!, {x4-x12, x14} //stack stores the values of the arguments
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stp x19, x20,[sp,#-16]!
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stp x21, x22,[sp,#-16]!
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stp x23, x24,[sp,#-16]!
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mov x15,x4 // pu1_src_top_left 40
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mov x16,x5 // sao_band_pos_u 44
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mov x17,x6 // sao_band_pos_v 48
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mov x19,x7 // pi1_sao_offset_u 52
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mov x20,x8 // pi1_sao_offset_v 56
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mov x21,x9 // wd 60
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mov x22,x10 // ht 64
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MOV x4, x15 //Loads pu1_src_top_left
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MOV x10, x22 //Loads ht
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MOV x9, x21 //Loads wd
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MOV x11,x10 //Move the ht to x9 for loop counter
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ADD x12,x0,x9 //pu1_src[row * src_strd + (wd)]
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ADRP x14, :got:gu1_table_band_idx
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LDR x14, [x14, #:got_lo12:gu1_table_band_idx]
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SUB x12,x12,#2 //wd-2
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SRC_LEFT_LOOP:
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LDRH w5,[x12] //Load the value
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ADD x12,x12,x1
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SUBS x11,x11,#1 //Decrement the loop counter
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STRH w5,[x2],#2 //Store the value in pu1_src_left pointer
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BNE SRC_LEFT_LOOP
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MOV x5, x16 //Loads sao_band_pos_u
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LD1 {v1.8b},[x14],#8 //band_table_u.val[0]
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ADD x12,x3,x9 //pu1_src_top[wd]
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sub x23,x12,#2
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LDRH w11,[x23]
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LD1 {v2.8b},[x14],#8 //band_table_u.val[1]
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LSL x6,x5,#3 //sao_band_pos_u
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STRH w11,[x4] //store to pu1_src_top_left[0]
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LD1 {v3.8b},[x14],#8 //band_table_u.val[2]
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MOV x7, x19 //Loads pi1_sao_offset_u
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SUB x4,x10,#1 //ht-1
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dup v31.8b,w6 //band_pos_u
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mul x4, x4, x1 //ht-1 * src_strd
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ADD x4,x4,x0 //pu1_src[(ht - 1) * src_strd]
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LD1 {v4.8b},[x14],#8 //band_table_u.val[3]
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MOV x11,x9 //Move the wd to x9 for loop counter
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SRC_TOP_LOOP: //wd is always multiple of 8
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LD1 {v0.8b},[x4],#8 //Load pu1_src[(ht - 1) * src_strd + col]
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SUBS x11,x11,#8 //Decrement the loop counter by 8
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ST1 {v0.8b},[x3],#8 //Store to pu1_src_top[col]
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BNE SRC_TOP_LOOP
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LD1 {v30.8b},[x7] //pi1_sao_offset_u load
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ADD v5.8b, v1.8b , v31.8b //band_table_u.val[0] = vadd_u8(band_table_u.val[0], sao_band_pos_u)
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dup v29.8b, v30.b[1] //vdup_n_u8(pi1_sao_offset_u[1])
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ADD v6.8b, v2.8b , v31.8b //band_table_u.val[1] = vadd_u8(band_table_u.val[1], sao_band_pos_u)
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dup v28.8b, v30.b[2] //vdup_n_u8(pi1_sao_offset_u[2])
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ADD v7.8b, v3.8b , v31.8b //band_table_u.val[2] = vadd_u8(band_table_u.val[2], sao_band_pos_u)
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dup v27.8b, v30.b[3] //vdup_n_u8(pi1_sao_offset_u[3])
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ADD v8.8b, v4.8b , v31.8b //band_table_u.val[3] = vadd_u8(band_table_u.val[3], sao_band_pos_u)
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CMP x5,#28
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dup v26.8b, v30.b[4] //vdup_n_u8(pi1_sao_offset_u[4])
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ADRP x14, :got:gu1_table_band_idx
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LDR x14, [x14, #:got_lo12:gu1_table_band_idx]
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movi v30.8b, #16 //vdup_n_u8(16)
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ADD v1.8b, v5.8b , v29.8b //band_table_u.val[0] = vadd_u8(band_table_u.val[0], vdup_n_u8(pi1_sao_offset_u[1]))
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LD1 {v9.8b},[x14],#8 //band_table_v.val[0]
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ADD v2.8b, v6.8b , v28.8b //band_table_u.val[1] = vadd_u8(band_table_u.val[1], vdup_n_u8(pi1_sao_offset_u[2]))
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LD1 {v10.8b},[x14],#8 //band_table_v.val[1]
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ADD v3.8b, v7.8b , v27.8b //band_table_u.val[2] = vadd_u8(band_table_u.val[2], vdup_n_u8(pi1_sao_offset_u[3]))
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MOV x6, x17 //Loads sao_band_pos_v
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ADD v4.8b, v8.8b , v26.8b //band_table_u.val[3] = vadd_u8(band_table_u.val[3], vdup_n_u8(pi1_sao_offset_u[4]))
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LSL x11,x6,#3 //sao_band_pos_v
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BLT SAO_BAND_POS_U_0
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SAO_BAND_POS_U_28: //case 28
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cmhs v13.8b, v30.8b , v4.8b //vcle_u8(band_table.val[3], vdup_n_u8(16))
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BNE SAO_BAND_POS_U_29
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ORR v4.8b, v4.8b , v13.8b //band_table.val[3] = vorr_u8(band_table.val[3], au1_cmp)
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B SWITCH_BREAK_U
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SAO_BAND_POS_U_29: //case 29
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CMP x5,#29
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cmhs v14.8b, v30.8b , v3.8b //vcle_u8(band_table.val[2], vdup_n_u8(16))
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BNE SAO_BAND_POS_U_30
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ORR v3.8b, v3.8b , v14.8b //band_table.val[2] = vorr_u8(band_table.val[2], au1_cmp)
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AND v4.8b, v4.8b , v13.8b //band_table.val[3] = vand_u8(band_table.val[3], au1_cmp)
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B SWITCH_BREAK_U
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SAO_BAND_POS_U_30: //case 30
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CMP x5,#30
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cmhs v15.8b, v30.8b , v2.8b //vcle_u8(band_table.val[1], vdup_n_u8(16))
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BNE SAO_BAND_POS_U_31
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ORR v2.8b, v2.8b , v15.8b //band_table.val[1] = vorr_u8(band_table.val[1], au1_cmp)
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AND v3.8b, v3.8b , v14.8b //band_table.val[2] = vand_u8(band_table.val[2], au1_cmp)
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SAO_BAND_POS_U_31: //case 31
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CMP x5,#31
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BNE SWITCH_BREAK_U
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cmhs v16.8b, v30.8b , v1.8b //vcle_u8(band_table.val[0], vdup_n_u8(16))
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ORR v1.8b, v1.8b , v16.8b //band_table.val[0] = vorr_u8(band_table.val[0], au1_cmp)
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AND v2.8b, v2.8b , v15.8b //band_table.val[1] = vand_u8(band_table.val[1], au1_cmp)
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B SWITCH_BREAK_U
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SAO_BAND_POS_U_0:
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CMP x5,#0 //case 0
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BNE SWITCH_BREAK_U
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cmhs v16.8b, v30.8b , v1.8b //vcle_u8(band_table.val[0], vdup_n_u8(16))
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AND v1.8b, v1.8b , v16.8b //band_table.val[0] = vand_u8(band_table.val[0], au1_cmp)
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SWITCH_BREAK_U:
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dup v30.8b,w11 //band_pos_v
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MOV x8, x20 //Loads pi1_sao_offset_v
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LD1 {v11.8b},[x14],#8 //band_table_v.val[2]
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ADD v13.8b, v9.8b , v30.8b //band_table_v.val[0] = vadd_u8(band_table_v.val[0], band_pos_v)
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LD1 {v12.8b},[x14],#8 //band_table_v.val[3]
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ADD v14.8b, v10.8b , v30.8b //band_table_v.val[1] = vadd_u8(band_table_v.val[1], band_pos_v)
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LD1 {v25.8b},[x8] //pi1_sao_offset_v load
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ADD v15.8b, v11.8b , v30.8b //band_table_v.val[2] = vadd_u8(band_table_v.val[2], band_pos_v)
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dup v29.8b, v25.b[1] //vdup_n_u8(pi1_sao_offset_v[1])
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ADD v16.8b, v12.8b , v30.8b //band_table_v.val[3] = vadd_u8(band_table_v.val[3], band_pos_v)
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dup v28.8b, v25.b[2] //vdup_n_u8(pi1_sao_offset_v[2])
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ADD v9.8b, v13.8b , v29.8b //band_table_v.val[0] = vadd_u8(band_table_v.val[0], vdup_n_u8(pi1_sao_offset_v[1]))
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dup v27.8b, v25.b[3] //vdup_n_u8(pi1_sao_offset_v[3])
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ADD v10.8b, v14.8b , v28.8b //band_table_v.val[1] = vadd_u8(band_table_v.val[1], vdup_n_u8(pi1_sao_offset_v[2]))
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dup v26.8b, v25.b[4] //vdup_n_u8(pi1_sao_offset_v[4])
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ADD v11.8b, v15.8b , v27.8b //band_table_v.val[2] = vadd_u8(band_table_v.val[2], vdup_n_u8(pi1_sao_offset_v[3]))
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movi v29.8b, #16 //vdup_n_u8(16)
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ADD v12.8b, v16.8b , v26.8b //band_table_v.val[3] = vadd_u8(band_table_v.val[3], vdup_n_u8(pi1_sao_offset_v[4]))
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AND x12,x9,#0xf
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CMP x6,#28
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BLT SAO_BAND_POS_V_0
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SAO_BAND_POS_V_28: //case 28
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cmhs v17.8b, v29.8b , v12.8b //vcle_u8(band_table.val[3], vdup_n_u8(16))
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BNE SAO_BAND_POS_V_29
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ORR v12.8b, v12.8b , v17.8b //band_table.val[3] = vorr_u8(band_table.val[3], au1_cmp)
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B SWITCH_BREAK_V
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SAO_BAND_POS_V_29: //case 29
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CMP x6,#29
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cmhs v18.8b, v29.8b , v11.8b //vcle_u8(band_table.val[2], vdup_n_u8(16))
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BNE SAO_BAND_POS_V_30
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ORR v11.8b, v11.8b , v18.8b //band_table.val[2] = vorr_u8(band_table.val[2], au1_cmp)
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AND v12.8b, v12.8b , v17.8b //band_table.val[3] = vand_u8(band_table.val[3], au1_cmp)
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B SWITCH_BREAK_V
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SAO_BAND_POS_V_30: //case 30
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CMP x6,#30
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cmhs v19.8b, v29.8b , v10.8b //vcle_u8(band_table.val[1], vdup_n_u8(16))
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BNE SAO_BAND_POS_V_31
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ORR v10.8b, v10.8b , v19.8b //band_table.val[1] = vorr_u8(band_table.val[1], au1_cmp)
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AND v11.8b, v11.8b , v18.8b //band_table.val[2] = vand_u8(band_table.val[2], au1_cmp)
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B SWITCH_BREAK_V
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SAO_BAND_POS_V_31: //case 31
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CMP x6,#31
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BNE SWITCH_BREAK_V
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cmhs v20.8b, v29.8b , v9.8b //vcle_u8(band_table.val[0], vdup_n_u8(16))
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ORR v9.8b, v9.8b , v20.8b //band_table.val[0] = vorr_u8(band_table.val[0], au1_cmp)
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AND v10.8b, v10.8b , v19.8b //band_table.val[1] = vand_u8(band_table.val[1], au1_cmp)
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B SWITCH_BREAK_V
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SAO_BAND_POS_V_0:
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CMP x6,#0 //case 0
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BNE SWITCH_BREAK_V
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cmhs v20.8b, v29.8b , v9.8b //vcle_u8(band_table.val[0], vdup_n_u8(16))
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AND v9.8b, v9.8b , v20.8b //band_table.val[0] = vand_u8(band_table.val[0], au1_cmp)
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SWITCH_BREAK_V:
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CMP x9,#16
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MOV x4,x0 //pu1_src_cpy
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mov v1.d[1],v2.d[0]
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mov v2.d[0],v3.d[0]
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mov v2.d[1],v4.d[0]
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mov v9.d[1],v10.d[0]
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mov v10.d[0],v11.d[0]
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mov v10.d[1],v12.d[0]
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BLT WIDTH_RESIDUE
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WIDTH_LOOP: //Width is assigned to be multiple of 16
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MOV x4,x0 //pu1_src_cpy
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MOV x11,x10 //move ht
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ADD x5,x4,x1
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HEIGHT_LOOP: //unrolled for 4 rows
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ADD x6,x5,x1
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LD2 {v5.8b, v6.8b},[x4] //vld1q_u8(pu1_src_cpy)
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ADD x7,x6,x1
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LD2 {v13.8b, v14.8b},[x5] //vld1q_u8(pu1_src_cpy)
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SUB v7.8b, v5.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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LD2 {v17.8b, v18.8b},[x6] //vld1q_u8(pu1_src_cpy)
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SUB v8.8b, v6.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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LD2 {v21.8b, v22.8b},[x7] //vld1q_u8(pu1_src_cpy)
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SUB v15.8b, v13.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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TBX v5.8b, {v1.16b- v2.16b},v7.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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SUB v16.8b, v14.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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TBX v6.8b, {v9.16b- v10.16b},v8.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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SUB v19.8b, v17.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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TBX v13.8b, {v1.16b- v2.16b},v15.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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SUB v20.8b, v18.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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TBX v14.8b, {v9.16b- v10.16b},v16.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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SUB v23.8b, v21.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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ST2 {v5.8b, v6.8b},[x4] //vst1q_u8(pu1_src_cpy, au1_cur_row)
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SUB v24.8b, v22.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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SUBS x11,x11,#4 //Decrement the ht loop count by 4
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TBX v17.8b, {v1.16b- v2.16b},v19.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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ST2 {v13.8b, v14.8b},[x5] //vst1q_u8(pu1_src_cpy, au1_cur_row)
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TBX v18.8b, {v9.16b- v10.16b},v20.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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TBX v21.8b, {v1.16b- v2.16b},v23.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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TBX v22.8b, {v9.16b- v10.16b},v24.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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ST2 {v17.8b, v18.8b},[x6],x1 //vst1q_u8(pu1_src_cpy, au1_cur_row)
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ADD x4,x6,x1
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ST2 {v21.8b, v22.8b},[x7] //vst1q_u8(pu1_src_cpy, au1_cur_row)
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ADD x5,x4,x1
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BNE HEIGHT_LOOP
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SUB x9,x9,#16 //Decrement the width loop by 16
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ADD x0,x0,#16
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CMP x9,#8
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BGT WIDTH_LOOP
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BLT END_LOOP
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MOV x4,x0 //pu1_src_cpy
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WIDTH_RESIDUE: //If width is not multiple of 16
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ADD x5,x4,x1
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LD2 {v5.8b, v6.8b},[x4] //vld1q_u8(pu1_src_cpy)
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ADD x6,x5,x1
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ADD x7,x6,x1
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LD2 {v13.8b, v14.8b},[x5] //vld1q_u8(pu1_src_cpy)
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SUB v7.8b, v5.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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LD2 {v17.8b, v18.8b},[x6] //vld1q_u8(pu1_src_cpy)
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SUB v8.8b, v6.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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TBX v5.8b, {v1.16b- v2.16b},v7.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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SUB v15.8b, v13.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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TBX v6.8b, {v9.16b- v10.16b},v8.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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SUB v16.8b, v14.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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LD2 {v21.8b, v22.8b},[x7] //vld1q_u8(pu1_src_cpy)
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SUB v19.8b, v17.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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TBX v13.8b, {v1.16b- v2.16b},v15.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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SUB v20.8b, v18.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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TBX v14.8b, {v9.16b- v10.16b},v16.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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ZIP1 v28.8b, v5.8b, v6.8b
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ZIP2 v6.8b, v5.8b, v6.8b
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mov v5.8b, v28.8b
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TBX v17.8b, {v1.16b- v2.16b},v19.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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SUB v23.8b, v21.8b , v31.8b //vsub_u8(au1_cur_row_deint.val[0], band_pos_u)
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ST1 {v5.8b},[x4] //vst1q_u8(pu1_src_cpy, au1_cur_row)
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ZIP1 v28.8b, v13.8b, v14.8b
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ZIP2 v14.8b, v13.8b, v14.8b
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mov v13.8b, v28.8b
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TBX v18.8b, {v9.16b- v10.16b},v20.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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SUB v24.8b, v22.8b , v30.8b //vsub_u8(au1_cur_row_deint.val[1], band_pos_v)
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ST1 {v13.8b},[x5] //vst1q_u8(pu1_src_cpy, au1_cur_row)
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SUBS x10,x10,#4 //Decrement the ht loop count by 4
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TBX v21.8b, {v1.16b- v2.16b},v23.8b //vtbx4_u8(au1_cur_row_deint.val[0], band_table_u, vsub_u8(au1_cur_row_deint.val[0], band_pos_u))
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ZIP1 v28.8b, v17.8b, v18.8b
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ZIP2 v18.8b, v17.8b, v18.8b
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mov v17.8b, v28.8b
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TBX v22.8b, {v9.16b- v10.16b},v24.8b //vtbx4_u8(au1_cur_row_deint.val[1], band_table_v, vsub_u8(au1_cur_row_deint.val[1], band_pos_v))
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ST1 {v17.8b},[x6],x1 //vst1q_u8(pu1_src_cpy, au1_cur_row)
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ZIP1 v28.8b, v21.8b, v22.8b
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ZIP2 v22.8b, v21.8b, v22.8b
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mov v21.8b, v28.8b
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ADD x4,x6,x1
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ST1 {v21.8b},[x7] //vst1q_u8(pu1_src_cpy, au1_cur_row)
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ADD x5,x4,x1
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BNE WIDTH_RESIDUE
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END_LOOP:
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// LDMFD sp!,{x4-x12,x15} //Reload the registers from SP
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ldp x23, x24,[sp],#16
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ldp x21, x22,[sp],#16
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ldp x19, x20,[sp],#16
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pop_v_regs
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ret
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