1 ///***************************************************************************** 2 //* 3 //* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 4 //* 5 //* Licensed under the Apache License, Version 2.0 (the "License"); 6 //* you may not use this file except in compliance with the License. 7 //* You may obtain a copy of the License at: 8 //* 9 //* http://www.apache.org/licenses/LICENSE-2.0 10 //* 11 //* Unless required by applicable law or agreed to in writing, software 12 //* distributed under the License is distributed on an "AS IS" BASIS, 13 //* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 //* See the License for the specific language governing permissions and 15 //* limitations under the License. 16 //* 17 //*****************************************************************************/ 18 ///** 19 //******************************************************************************* 20 //* ,:file 21 //* ihevc_sao_edge_offset_class1.s 22 //* 23 //* ,:brief 24 //* Contains function definitions for inter prediction interpolation. 25 //* Functions are coded using NEON intrinsics and can be compiled using@ ARM 26 //* RVCT 27 //* 28 //* ,:author 29 //* Parthiban V 30 //* 31 //* ,:par List of Functions: 32 //* 33 //* 34 //* ,:remarks 35 //* None 36 //* 37 //******************************************************************************* 38 //*/ 39 //void ihevc_sao_edge_offset_class1(UWORD8 *pu1_src, 40 // WORD32 src_strd, 41 // UWORD8 *pu1_src_left, 42 // UWORD8 *pu1_src_top, 43 // UWORD8 *pu1_src_top_left, 44 // UWORD8 *pu1_src_top_right, 45 // UWORD8 *pu1_src_bot_left, 46 // UWORD8 *pu1_avail, 47 // WORD8 *pi1_sao_offset, 48 // WORD32 wd, 49 // WORD32 ht) 50 //**************Variables Vs Registers***************************************** 51 //x0 => *pu1_src 52 //x1 => src_strd 53 //x2 => *pu1_src_left 54 //x3 => *pu1_src_top 55 //x4 => *pu1_src_top_left 56 //x5 => *pu1_avail 57 //x6 => *pi1_sao_offset 58 //x7 => wd 59 //x8 => ht 60 61 .text 62 .p2align 2 63 64 .include "ihevc_neon_macros.s" 65 66 .globl gi1_table_edge_idx 67 .globl ihevc_sao_edge_offset_class1_av8 68 69 ihevc_sao_edge_offset_class1_av8: 70 71 72 // STMFD sp!, {x4-x12, x14} //stack stores the values of the arguments 73 MOV x5,x7 //Loads pu1_avail 74 75 LDR x6,[sp] //Loads pi1_sao_offset 76 LDR w7,[sp,#8] //Loads wd 77 LDR w8,[sp,#16] //Loads ht 78 79 80 stp x19, x20,[sp,#-16]! 81 82 SUB x9,x7,#1 //wd - 1 83 LDRB w10,[x3,x9] //pu1_src_top[wd - 1] 84 STRB w10,[x4] //*pu1_src_top_left = pu1_src_top[wd - 1] 85 ADD x10,x0,x9 //pu1_src[row * src_strd + wd - 1] 86 MOV x11,x2 //Move pu1_src_left pointer to x11 87 MOV x12,x8 //Move ht to x12 for loop count 88 SRC_LEFT_LOOP: 89 LDRB w14,[x10] //Load pu1_src[row * src_strd + wd - 1] 90 ADD x10,x10,x1 91 STRB w14,[x11],#1 //pu1_src_left[row] 92 SUBS x12, x12,#1 //Decrement the loop count 93 BNE SRC_LEFT_LOOP //If not equal to 0 jump to the src_left_loop 94 95 SUB x12,x8,#1 //ht - 1 96 mul x12, x12, x1 //(ht - 1) * src_strd 97 ADD x12,x12,x0 //pu1_src[(ht - 1) * src_strd] 98 99 LDRB w4,[x5,#2] //pu1_avail[2] 100 CMP x4,#0 //0 == pu1_avail[2] 101 ADD x20,x0,x1 //pu1_src += src_strd 102 csel x0, x20, x0,EQ 103 SUB x20,x8,#1 //ht-- 104 csel x8, x20, x8,EQ 105 106 LDRB w4,[x5,#3] //pu1_avail[3] 107 CMP x4,#0 //0 == pu1_avail[3] 108 SUB x20,x8,#1 //ht-- 109 csel x8, x20, x8,EQ 110 111 movi v0.16b, #2 //const_2 = vdupq_n_s8(2) 112 movi v2.8h, #0 //const_min_clip = vdupq_n_s16(0) 113 movi v4.8h, #255 //const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) 114 ADRP x14, :got:gi1_table_edge_idx //table pointer 115 LDR x14, [x14, #:got_lo12:gi1_table_edge_idx] 116 LD1 {v6.8b},[x14] //edge_idx_tbl = vld1_s8(gi1_table_edge_idx) 117 LD1 {v7.8b},[x6] //offset_tbl = vld1_s8(pi1_sao_offset) 118 119 CMP x7,#16 //Compare wd with 16 120 BLT WIDTH_RESIDUE //If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case 121 122 WIDTH_LOOP_16: 123 LDRB w4,[x5,#2] //pu1_avail[2] 124 CMP x4,#0 //0 == pu1_avail[2] 125 SUB x20,x0,x1 //pu1_src -= src_strd 126 csel x9, x20, x9,EQ 127 csel x9, x3, x9,NE //*pu1_src_top 128 129 MOV x10,x0 //*pu1_src 130 131 LD1 {v1.16b},[x9],#16 //pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 132 LD1 {v3.16b},[x0],#16 //pu1_cur_row = vld1q_u8(pu1_src) 133 134 LD1 {v30.16b},[x12],#16 //vld1q_u8(pu1_src[(ht - 1) * src_strd]) 135 cmhi v5.16b, v3.16b , v1.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 136 137 ST1 { v30.16b},[x3],#16 //vst1q_u8(pu1_src_top[col]) 138 cmhi v17.16b, v1.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 139 140 SUB v16.16b, v17.16b , v5.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 141 MOV x11,x8 //move ht to x11 for loop count 142 143 PU1_SRC_LOOP: 144 ADD x10,x10,x1 //*pu1_src + src_strd 145 LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 146 ADD x6,x10,x1 //II Iteration *pu1_src + src_strd 147 148 cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 149 LD1 {v30.16b},[x6] //II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 150 151 cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 152 SUB x10,x10,x1 153 154 SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 155 Uxtl v26.8h, v18.8b //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 156 157 ADD v5.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) 158 Uxtl2 v28.8h, v18.16b //II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 159 160 ADD v5.16b, v5.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 161 cmhi v22.16b, v18.16b , v30.16b //II vcgtq_u8(pu1_cur_row, pu1_top_row) 162 163 NEG v16.16b, v20.16b //sign_up = vnegq_s8(sign_down) 164 TBL v5.16b, {v6.16b},v5.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 165 cmhi v24.16b, v30.16b , v18.16b //II vcltq_u8(pu1_cur_row, pu1_top_row) 166 167 SUB v1.16b, v24.16b , v22.16b //II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 168 // TBL v13.8b, {v6.16b},v13.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 169 ADD v22.16b, v0.16b , v16.16b //II edge_idx = vaddq_s8(const_2, sign_up) 170 171 172 NEG v16.16b, v1.16b //II sign_up = vnegq_s8(sign_down) 173 TBL v5.16b, {v7.16b},v5.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 174 ADD v22.16b, v22.16b , v1.16b //II edge_idx = vaddq_s8(edge_idx, sign_down) 175 176 177 Uxtl v20.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 178 TBL v22.16b, {v6.16b},v22.16b //II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 179 SADDW v20.8h, v20.8h , v5.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 180 181 SMAX v20.8h, v20.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 182 // TBL v23.8b, {v6.16b},v23.8b //II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 183 UMIN v20.8h, v20.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 184 185 186 Uxtl2 v1.8h, v3.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 187 // TBL v13.8b, {v7.16b},v13.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 188 mov v3.16b, v30.16b //II pu1_cur_row = pu1_next_row 189 190 SADDW2 v1.8h, v1.8h , v5.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 191 TBL v24.16b, {v7.16b},v22.16b //II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 192 SMAX v1.8h, v1.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 193 194 UMIN v1.8h, v1.8h , v4.8h //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 195 // TBL v25.8b, {v7.16b},v23.8b //II offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 196 197 xtn v20.8b, v20.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 198 SADDW v26.8h, v26.8h , v24.8b //II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 199 200 xtn2 v20.16b, v1.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) 201 SADDW2 v28.8h, v28.8h , v24.16b //II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 202 203 204 SMAX v26.8h, v26.8h , v2.8h //II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 205 UMIN v26.8h, v26.8h , v4.8h //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 206 207 SMAX v28.8h, v28.8h , v2.8h //II pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 208 UMIN v28.8h, v28.8h , v4.8h //II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 209 ST1 { v20.16b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 210 211 xtn v30.8b, v26.8h //II vmovn_s16(pi2_tmp_cur_row.val[0]) 212 SUBS x11,x11,#2 //II Decrement the ht loop count by 1 213 xtn2 v30.16b, v28.8h //II vmovn_s16(pi2_tmp_cur_row.val[1]) 214 215 ST1 { v30.16b},[x10],x1 //II vst1q_u8(pu1_src_cpy, pu1_cur_row) 216 217 BEQ PU1_SRC_LOOP_END //if 0 == pu1_avail[3] || 0 == pu1_avail[2] ht = ht-- 218 CMP x11,#1 //checking any residue remains 219 BGT PU1_SRC_LOOP //If not equal jump to PU1_SRC_LOOP 220 221 ADD x10,x10,x1 //*pu1_src + src_strd 222 LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 223 cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 224 cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 225 SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 226 SUB x10,x10,x1 227 228 ADD v22.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) 229 ADD v22.16b, v22.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 230 TBL v22.16b, {v6.16b},v22.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 231 // TBL v23.8b, {v6.16b},v23.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 232 233 TBL v24.16b, {v7.16b},v22.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 234 Uxtl v26.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 235 SADDW v26.8h, v26.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 236 SMAX v26.8h, v26.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 237 UMIN v26.8h, v26.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 238 239 // TBL v25.8b, {v7.16b},v23.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 240 Uxtl2 v28.8h, v3.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 241 SADDW2 v28.8h, v28.8h , v24.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 242 SMAX v28.8h, v28.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 243 UMIN v28.8h, v28.8h , v4.8h //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 244 245 xtn v30.8b, v26.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 246 xtn2 v30.16b, v28.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) 247 248 ST1 { v30.16b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 249 250 PU1_SRC_LOOP_END: 251 mov v3.16b, v18.16b //pu1_cur_row = pu1_next_row 252 SUBS x7,x7,#16 //Decrement the wd loop count by 16 253 CMP x7,#8 //Check whether residue remains 254 BEQ WIDTH_RESIDUE //If residue remains jump to residue loop 255 BGT WIDTH_LOOP_16 //If not equal jump to width_loop 256 BLT END_LOOPS //Jump to end function 257 258 259 WIDTH_RESIDUE: 260 LDRB w4,[x5,#2] //pu1_avail[2] 261 CMP x4,#0 //0 == pu1_avail[2] 262 SUB x20,x0,x1 //pu1_src -= src_strd 263 csel x9, x20, x9,EQ 264 csel x9, x3, x9,NE //*pu1_src_top 265 MOV x10,x0 266 267 LD1 {v1.16b},[x9],#16 //pu1_top_row = vld1q_u8(pu1_src_top_cpy || pu1_src - src_strd) 268 LD1 {v3.16b},[x0],#16 //pu1_cur_row = vld1q_u8(pu1_src) 269 270 LD1 {v30.8b},[x12] //vld1_u8(pu1_src[(ht - 1) * src_strd]) 271 ST1 {v30.8b},[x3] //vst1_u8(pu1_src_top[col]) 272 273 cmhi v5.16b, v3.16b , v1.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 274 cmhi v17.16b, v1.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 275 SUB v16.16b, v17.16b , v5.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 276 MOV x11,x8 //move ht to x11 for loop count 277 278 PU1_SRC_LOOP_RESIDUE: 279 ADD x10,x10,x1 //*pu1_src + src_strd 280 LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 281 ADD x6,x10,x1 //II Iteration *pu1_src + src_strd 282 283 cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row) 284 LD1 {v30.16b},[x6] //II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 285 286 cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_next_row) 287 SUB x10,x10,x1 288 289 SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 290 Uxtl v26.8h, v18.8b //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 291 292 ADD v5.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) 293 cmhi v22.16b, v18.16b , v30.16b //II vcgtq_u8(pu1_cur_row, pu1_next_row) 294 295 ADD v5.16b, v5.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 296 cmhi v24.16b, v30.16b , v18.16b //II vcltq_u8(pu1_cur_row, pu1_next_row) 297 298 NEG v16.16b, v20.16b //sign_up = vnegq_s8(sign_down) 299 TBL v5.8b, {v6.16b},v5.8b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 300 SUB v20.16b, v24.16b , v22.16b //II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 301 302 ADD v22.16b, v0.16b , v16.16b //II edge_idx = vaddq_s8(const_2, sign_up) 303 TBL v5.8b, {v7.16b},v5.8b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 304 NEG v16.16b, v20.16b //II sign_up = vnegq_s8(sign_down) 305 306 ADD v22.16b, v22.16b , v20.16b //II edge_idx = vaddq_s8(edge_idx, sign_down) 307 Uxtl v20.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 308 309 SADDW v20.8h, v20.8h , v5.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 310 TBL v22.8b, {v6.16b},v22.8b //II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 311 SMAX v20.8h, v20.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 312 313 UMIN v20.8h, v20.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 314 TBL v24.8b, {v7.16b},v22.8b //II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 315 xtn v20.8b, v20.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 316 317 SADDW v26.8h, v26.8h , v24.8b //II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 318 SMAX v26.8h, v26.8h , v2.8h //II pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 319 UMIN v26.8h, v26.8h , v4.8h //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 320 321 mov v3.16b, v30.16b //II pu1_cur_row = pu1_next_row 322 ST1 {v20.8b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 323 xtn v30.8b, v26.8h //II vmovn_s16(pi2_tmp_cur_row.val[0]) 324 325 SUBS x11,x11,#2 //Decrement the ht loop count by 1 326 ST1 {v30.8b},[x10],x1 //II vst1q_u8(pu1_src_cpy, pu1_cur_row) 327 328 BEQ END_LOOPS 329 CMP x11,#1 330 BGT PU1_SRC_LOOP_RESIDUE //If not equal jump to PU1_SRC_LOOP 331 332 333 ADD x10,x10,x1 //*pu1_src + src_strd 334 LD1 {v18.16b},[x10] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 335 cmhi v5.16b, v3.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row) 336 cmhi v17.16b, v18.16b , v3.16b //vcltq_u8(pu1_cur_row, pu1_next_row) 337 SUB v20.16b, v17.16b , v5.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 338 SUB x10,x10,x1 339 340 ADD v22.16b, v0.16b , v16.16b //edge_idx = vaddq_s8(const_2, sign_up) 341 ADD v22.16b, v22.16b , v20.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 342 TBL v22.8b, {v6.16b},v22.8b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 343 344 TBL v24.8b, {v7.16b},v22.8b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 345 Uxtl v26.8h, v3.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 346 SADDW v26.8h, v26.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 347 SMAX v26.8h, v26.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 348 UMIN v26.8h, v26.8h , v4.8h //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 349 350 xtn v30.8b, v26.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 351 352 ST1 {v30.8b},[x10],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 353 354 END_LOOPS: 355 // LDMFD sp!,{x4-x12,x15} //Reload the registers from SP 356 ldp x19, x20,[sp], #16 357 358 ret 359 360 361 362 363 364 365
