242 lines
9.4 KiB
ArmAsm
242 lines
9.4 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_luma.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_luma(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,
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@ WORD8 *pi1_sao_offset,
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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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@r0 => *pu1_src
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@r1 => src_strd
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@r2 => *pu1_src_left
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@r3 => *pu1_src_top
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@r4 => *pu1_src_top_left
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@r5 => sao_band_pos
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@r6 => *pi1_sao_offset
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@r7 => wd
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@r8 => ht
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.equ pu1_src_top_left_offset, 104
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.equ sao_band_pos_offset, 108
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.equ pi1_sao_offset, 112
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.equ wd_offset, 116
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.equ ht_offset, 120
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.text
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.p2align 2
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.extern gu1_table_band_idx
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.globl ihevc_sao_band_offset_luma_a9q
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gu1_table_band_idx_addr:
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.long gu1_table_band_idx - ulbl1 - 8
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ihevc_sao_band_offset_luma_a9q:
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STMFD sp!, {r4-r12, r14} @stack stores the values of the arguments
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vpush {d8 - d15}
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LDR r8,[sp,#ht_offset] @Loads ht
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LDR r7,[sp,#wd_offset] @Loads wd
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MOV r9,r8 @Move the ht to r9 for loop counter
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LDR r5,[sp,#sao_band_pos_offset] @Loads sao_band_pos
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ADD r10,r0,r7 @pu1_src[row * src_strd + (wd)]
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LDR r4,[sp,#pu1_src_top_left_offset] @Loads pu1_src_top_left
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SUB r10,r10,#1 @wd-1
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LDR r14, gu1_table_band_idx_addr
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ulbl1:
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add r14,r14,pc
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SRC_LEFT_LOOP:
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LDRB r11,[r10],r1 @Load the value
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SUBS r9,r9,#1 @Decrement the loop counter
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STRB r11,[r2],#1 @Store the value in pu1_src_left pointer
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BNE SRC_LEFT_LOOP
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ADD r9,r3,r7 @pu1_src_top[wd]
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VLD1.8 D1,[r14]! @band_table.val[0]
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LDR r6,[sp,#pi1_sao_offset] @Loads pi1_sao_offset
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LSL r11,r5,#3
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VLD1.8 D2,[r14]! @band_table.val[1]
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LDRB r10,[r9,#-1]
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VDUP.8 D31,r11 @band_pos
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SUB r12,r8,#1 @ht-1
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STRB r10,[r4] @store to pu1_src_top_left[0]
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VLD1.8 D3,[r14]! @band_table.val[2]
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MUL r12,r12,r1 @ht-1 * src_strd
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ADD r4,r12,r0 @pu1_src[(ht - 1) * src_strd]
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VLD1.8 D4,[r14]! @band_table.val[3]
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MOV r9,r7 @Move the wd to r9 for loop counter
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SRC_TOP_LOOP: @wd is always multiple of 8
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VLD1.8 D0,[r4]! @Load pu1_src[(ht - 1) * src_strd + col]
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SUBS r9,r9,#8 @Decrement the loop counter by 8
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VST1.8 D0,[r3]! @Store to pu1_src_top[col]
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BNE SRC_TOP_LOOP
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VLD1.8 D30,[r6] @pi1_sao_offset load
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VADD.I8 D5,D1,D31 @band_table.val[0] = vadd_u8(band_table.val[0], band_pos)
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VDUP.8 D29,D30[1] @vdup_n_u8(pi1_sao_offset[1])
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VADD.I8 D6,D2,D31 @band_table.val[1] = vadd_u8(band_table.val[1], band_pos)
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VDUP.8 D28,D30[2] @vdup_n_u8(pi1_sao_offset[2])
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VADD.I8 D7,D3,D31 @band_table.val[2] = vadd_u8(band_table.val[2], band_pos)
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VDUP.8 D27,D30[3] @vdup_n_u8(pi1_sao_offset[3])
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VADD.I8 D8,D4,D31 @band_table.val[3] = vadd_u8(band_table.val[3], band_pos)
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VDUP.8 D26,D30[4] @vdup_n_u8(pi1_sao_offset[4])
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VADD.I8 D1,D5,D29 @band_table.val[0] = vadd_u8(band_table.val[0], vdup_n_u8(pi1_sao_offset[1]))
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VMOV.I8 D29,#16 @vdup_n_u8(16)
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VADD.I8 D2,D6,D28 @band_table.val[1] = vadd_u8(band_table.val[1], vdup_n_u8(pi1_sao_offset[2]))
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CMP r5,#28
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VADD.I8 D3,D7,D27 @band_table.val[2] = vadd_u8(band_table.val[2], vdup_n_u8(pi1_sao_offset[3]))
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VADD.I8 D4,D8,D26 @band_table.val[3] = vadd_u8(band_table.val[3], vdup_n_u8(pi1_sao_offset[4]))
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BLT SAO_BAND_POS_0
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SAO_BAND_POS_28: @case 28
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VCLE.U8 D12,D4,D29 @vcle_u8(band_table.val[3], vdup_n_u8(16))
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BNE SAO_BAND_POS_29
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VORR.U8 D4,D4,D12 @band_table.val[3] = vorr_u8(band_table.val[3], au1_cmp)
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B SWITCH_BREAK
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SAO_BAND_POS_29: @case 29
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CMP r5,#29
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VCLE.U8 D11,D3,D29 @vcle_u8(band_table.val[2], vdup_n_u8(16))
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BNE SAO_BAND_POS_30
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VORR.U8 D3,D3,D11 @band_table.val[2] = vorr_u8(band_table.val[2], au1_cmp)
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VAND.U8 D4,D4,D12 @band_table.val[3] = vand_u8(band_table.val[3], au1_cmp)
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B SWITCH_BREAK
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SAO_BAND_POS_30: @case 30
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CMP r5,#30
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VCLE.U8 D10,D2,D29 @vcle_u8(band_table.val[1], vdup_n_u8(16))
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BNE SAO_BAND_POS_31
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VORR.U8 D2,D2,D10 @band_table.val[1] = vorr_u8(band_table.val[1], au1_cmp)
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VAND.U8 D3,D3,D11 @band_table.val[2] = vand_u8(band_table.val[2], au1_cmp)
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B SWITCH_BREAK
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SAO_BAND_POS_31: @case 31
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CMP r5,#31
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BNE SWITCH_BREAK
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VCLE.U8 D9,D1,D29 @vcle_u8(band_table.val[0], vdup_n_u8(16))
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VORR.U8 D1,D1,D9 @band_table.val[0] = vorr_u8(band_table.val[0], au1_cmp)
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VAND.U8 D2,D2,D10 @band_table.val[1] = vand_u8(band_table.val[1], au1_cmp)
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SAO_BAND_POS_0:
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CMP r5,#0 @case 0
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BNE SWITCH_BREAK
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VCLE.U8 D9,D1,D29 @vcle_u8(band_table.val[0], vdup_n_u8(16))
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VAND.U8 D1,D1,D9 @band_table.val[0] = vand_u8(band_table.val[0], au1_cmp)
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SWITCH_BREAK:
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MOV r4,r0 @pu1_src_cpy
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MOV r11,r8 @move ht
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ADD r5,r4,r1
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HEIGHT_LOOP:
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ADD r6,r5,r1
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VLD1.8 D13,[r4] @au1_cur_row = vld1_u8(pu1_src_cpy)
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ADD r10,r6,r1
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VLD1.8 D15,[r5] @au1_cur_row = vld1_u8(pu1_src_cpy)
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VLD1.8 D17,[r6] @au1_cur_row = vld1_u8(pu1_src_cpy)
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VLD1.8 D19,[r10] @au1_cur_row = vld1_u8(pu1_src_cpy)
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VSUB.I8 D14,D13,D31 @vsub_u8(au1_cur_row, band_pos)
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VTBX.8 D13,{D1-D4},D14 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos))
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VSUB.I8 D16,D15,D31 @vsub_u8(au1_cur_row, band_pos)
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VTBX.8 D15,{D1-D4},D16 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos))
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VSUB.I8 D18,D17,D31 @vsub_u8(au1_cur_row, band_pos)
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VTBX.8 D17,{D1-D4},D18 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos))
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VSUB.I8 D20,D19,D31 @vsub_u8(au1_cur_row, band_pos)
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VTBX.8 D19,{D1-D4},D20 @vtbx4_u8(au1_cur_row, band_table, vsub_u8(au1_cur_row, band_pos))
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VST1.8 D13,[r4],r1 @vst1_u8(pu1_src_cpy, au1_cur_row)
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VST1.8 D15,[r5] @vst1_u8(pu1_src_cpy, au1_cur_row)
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SUBS r11,r11,#4 @Decrement the ht loop count by 4
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VST1.8 D17,[r6],r1 @vst1_u8(pu1_src_cpy, au1_cur_row)
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ADD r4,r6,r1
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VST1.8 D19,[r10] @vst1_u8(pu1_src_cpy, au1_cur_row)
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ADD r5,r4,r1
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BNE HEIGHT_LOOP
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SUBS r7,r7,#8 @Decrement the width loop by 8
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ADD r0,r0,#8
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BNE SWITCH_BREAK
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vpop {d8 - d15}
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LDMFD sp!,{r4-r12,r15} @Reload the registers from SP
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