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_class2.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_class2(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_class2_av8 68 69ihevc_sao_edge_offset_class2_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 MOV x16,x7 // wd 80 MOV x17,x8 // ht 81 82 83 stp x19, x20,[sp,#-16]! 84 stp x21, x22,[sp,#-16]! 85 stp x23, x24,[sp,#-16]! 86 87 SUB x9,x7,#1 //wd - 1 88 89 LDRB w10,[x3,x9] //pu1_src_top[wd - 1] 90 91 MOV x19,x0 //Store pu1_src in sp 92 MOV x21,x2 //Store pu1_src_left in sp 93 MOV x22,x3 //Store pu1_src_top in sp 94 MOV x23,x5 //Store pu1_avail in sp 95 MOV x24,x4 //Store pu1_src_top_left in sp 96 97 98 MOV x9,x7 //Move width to x9 for loop count 99 100 SUB sp,sp,#0xA0 //Decrement the stack pointer to store some temp arr values 101 102 STRB w10,[sp] //u1_src_top_left_tmp = pu1_src_top[wd - 1] 103 SUB x10,x8,#1 //ht-1 104 madd x11, x10, x1, x0 //pu1_src[(ht - 1) * src_strd + col] 105 ADD x12,sp,#0x02 //temp array 106 107AU1_SRC_TOP_LOOP: 108 LD1 {v0.8b},[x11],#8 //pu1_src[(ht - 1) * src_strd + col] 109 SUBS x9,x9,#8 //Decrement the loop count by 8 110 ST1 {v0.8b},[x12],#8 //au1_src_top_tmp[col] = pu1_src[(ht - 1) * src_strd + col] 111 BNE AU1_SRC_TOP_LOOP 112 113PU1_AVAIL_4_LOOP: 114 LDRB w10,[x5,#4] //pu1_avail[4] 115 CMP x10,#0 116 LDRB w9,[x0] //u1_pos_0_0_tmp = pu1_src[0] 117 BEQ PU1_AVAIL_7_LOOP 118 119 LDRB w11,[x4] //pu1_src_top_left[0] 120 ADD x14,x0,x1 //pu1_src + src_strd 121 122 SUBS x12,x9,x11 //pu1_src[0] - pu1_src_top_left[0] 123 LDRB w4,[x14,#1] //pu1_src[1 + src_strd] 124 125 movn x20,#0 126 csel x12, x20, x12,LT 127 MOV x20,#1 128 csel x12, x20, x12,GT //SIGN(pu1_src[0] - pu1_src_top_left[0]) 129 130 ADRP x14, :got:gi1_table_edge_idx //table pointer 131 LDR x14, [x14, #:got_lo12:gi1_table_edge_idx] 132 SUBS x11,x9,x4 //pu1_src[0] - pu1_src[1 + src_strd] 133 134 movn x20,#0 135 csel x11, x20, x11,LT 136 MOV x20,#1 137 csel x11, x20, x11,GT //SIGN(pu1_src[0] - pu1_src[1 + src_strd]) 138 ADD x4,x12,x11 //SIGN(pu1_src[0] - pu1_src_top_left[0]) + SIGN(pu1_src[0] - pu1_src[1 + src_strd]) 139 ADD x4,x4,#2 //edge_idx 140 141 LDRSB x12,[x14,x4] //edge_idx = gi1_table_edge_idx[edge_idx] 142 CMP x12,#0 //0 != edge_idx 143 BEQ PU1_AVAIL_7_LOOP 144 LDRSB x10,[x6,x12] //pi1_sao_offset[edge_idx] 145 ADD x9,x9,x10 //pu1_src[0] + pi1_sao_offset[edge_idx] 146 mov x20,#255 147 cmp x9,x20 148 csel x9, x20, x9, ge //u1_pos_0_0_tmp = CLIP3(pu1_src[0] + pi1_sao_offset[edge_idx], 0, (1 << bit_depth) - 1) 149 150PU1_AVAIL_7_LOOP: 151 LDRB w14,[x5,#7] //pu1_avail[7] 152 CMP x14,#0 153 SUB x10,x7,#1 //wd - 1 154 SUB x11,x8,#1 //ht - 1 155 madd x12, x11, x1, x10 //wd - 1 + (ht - 1) * src_strd 156 ADD x12,x12,x0 //pu1_src[wd - 1 + (ht - 1) * src_strd] 157 LDRB w10,[x12] //u1_pos_wd_ht_tmp = pu1_src[wd - 1 + (ht - 1) * src_strd] 158 BEQ PU1_AVAIL 159 160 SUB x4,x12,x1 //pu1_src[(wd - 1 + (ht - 1) * src_strd) - src_strd] 161 SUB x4,x4,#1 162 LDRB w11,[x4] //Load pu1_src[wd - 1 + (ht - 1) * src_strd - 1 - src_strd] 163 ADD x4,x4,#1 164 ADD x14,x12,x1 //pu1_src[(wd - 1 + (ht - 1) * src_strd) + src_strd] 165 166 SUBS x11,x10,x11 //pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd- 1 - src_strd] 167 LDRB w4,[x14,#1] //Load pu1_src[wd - 1 + (ht - 1) * src_strd + 1 + src_strd] 168 169 movn x20,#0 170 csel x11, x20, x11,LT 171 MOV x20,#1 172 csel x11, x20, x11,GT //SIGN(pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd- 1 - src_strd]) 173 174 SUBS x4,x10,x4 //pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd + 1 + src_strd] 175 movn x20,#0 176 csel x4, x20, x4,LT 177 MOV x20,#1 178 csel x4, x20, x4,GT //SIGN(pu1_src[wd - 1 + (ht - 1) * src_strd] - pu1_src[wd - 1 + (ht - 1) * src_strd + 1 + src_strd]) 179 180 ADD x11,x11,x4 //Add 2 sign value 181 ADD x11,x11,#2 //edge_idx 182 ADRP x14, :got:gi1_table_edge_idx //table pointer 183 LDR x14, [x14, #:got_lo12:gi1_table_edge_idx] 184 185 LDRSB x12,[x14,x11] //edge_idx = gi1_table_edge_idx[edge_idx] 186 CMP x12,#0 187 BEQ PU1_AVAIL 188 LDRSB x11,[x6,x12] //pi1_sao_offset[edge_idx] 189 ADD x10,x10,x11 //pu1_src[wd - 1 + (ht - 1) * src_strd] + pi1_sao_offset[edge_idx] 190 mov x20,#255 191 cmp x10,x20 192 csel x10, x20, x10, ge //u1_pos_wd_ht_tmp = CLIP3(pu1_src[wd - 1 + (ht - 1) * src_strd] + pi1_sao_offset[edge_idx], 0, (1 << bit_depth) - 1) 193 194PU1_AVAIL: 195 MOV x12,x8 //Move ht 196 movi v0.16b, #2 //const_2 = vdupq_n_s8(2) 197 LDRB w11,[x5,#3] //pu1_avail[3] 198 199 MOV x14,x2 //Move pu1_src_left to pu1_src_left_cpy 200 movi v2.8h, #0 //const_min_clip = vdupq_n_s16(0) 201 CMP x11,#0 202 203 LDRB w5,[x5,#2] //pu1_avail[2] 204 movi v4.8h, #255 //const_max_clip = vdupq_n_u16((1 << bit_depth) - 1) 205 SUB x20,x12,#1 //ht_tmp-- 206 csel x12, x20, x12,EQ 207 208 CMP x5,#0 209 LD1 {v7.8b},[x6] //offset_tbl = vld1_s8(pi1_sao_offset) 210 ADRP x11, :got:gi1_table_edge_idx //table pointer 211 LDR x11, [x11, #:got_lo12:gi1_table_edge_idx] 212 213 214 ADD x20,x0,x1 //pu1_src += src_strd 215 csel x0, x20, x0,EQ 216 LD1 {v6.8b},[x11] //edge_idx_tbl = vld1_s8(gi1_table_edge_idx) 217 SUB x20,x12,#1 //ht_tmp-- 218 csel x12, x20, x12,EQ 219 220 MOV x6,x7 //move wd to x6 loop_count 221 movi v1.16b, #0xFF //au1_mask = vdupq_n_s8(-1) 222 ADD x20,x14,#1 //pu1_src_left_cpy += 1 223 csel x14, x20, x14,EQ 224 225 MOV x15,x0 226 CMP x7,#16 //Compare wd with 16 227 228 BLT WIDTH_RESIDUE //If not jump to WIDTH_RESIDUE where loop is unrolled for 8 case 229 CMP x8,#4 //Compare ht with 4 230 BLE WD_16_HT_4_LOOP //If jump to WD_16_HT_4_LOOP 231 232WIDTH_LOOP_16: 233 MOV x7,x16 //Loads wd 234 235 MOV x5,x23 //Loads pu1_avail 236 CMP x6,x7 //col == wd 237 LDRb w20, [x5] //pu1_avail[0] 238 csel w8,w20,w8,EQ 239 MOV x20,#-1 240 csel x8, x20, x8,NE //au1_mask = vsetq_lane_s8(-1, au1_mask, 0) 241 242 mov v1.b[0], w8 //au1_mask = vsetq_lane_s8((-1||pu1_avail[0]), au1_mask, 0) 243 CMP x6,#16 //if(col == 16) 244 BNE SKIP_AU1_MASK_VAL 245 LDRB w8,[x5,#1] //pu1_avail[1] 246 mov v1.b[15], w8 //au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) 247 248SKIP_AU1_MASK_VAL: 249 LDRB w11,[x5,#2] //pu1_avail[2] 250 CMP x11,#0 251 252 SUB x20,x0,x1 //pu1_src - src_strd 253 csel x8, x20, x8,EQ 254 csel x8, x3, x8,NE //pu1_src_top_cpy 255 SUB x8,x8,#1 //pu1_src_top_cpy - 1 || pu1_src - src_strd - 1 256 257 MOV x7,x16 //Loads wd 258 LD1 {v3.16b},[x8] //pu1_top_row = vld1q_u8(pu1_src - src_strd - 1) || vld1q_u8(pu1_src_top_cpy - 1) 259 ADD x3,x3,#16 260 261 ADD x5,sp,#0x42 //*au1_src_left_tmp 262 LD1 {v5.16b},[x0] //pu1_cur_row = vld1q_u8(pu1_src) 263 MOV x4,x17 //Loads ht 264 265 SUB x7,x7,x6 //(wd - col) 266 cmhi v17.16b, v5.16b , v3.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 267 MOV x8,x19 //Loads *pu1_src 268 269 ADD x7,x7,#15 //15 + (wd - col) 270 cmhi v16.16b, v3.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 271 ADD x7,x8,x7 //pu1_src[0 * src_strd + 15 + (wd - col)] 272 273 SUB x5,x5,#1 274 SUB v17.16b, v16.16b , v17.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 275 276AU1_SRC_LEFT_LOOP: 277 LDRB w8,[x7] //load the value and increment by src_strd 278 ADD x7,x7,x1 279 STRB w8,[x5,#1]! //store it in the stack pointer 280 SUBS x4,x4,#1 //decrement the loop count 281 BNE AU1_SRC_LEFT_LOOP 282 283 ADD x8,x0,x1 //I Iteration *pu1_src + src_strd 284 movi v18.16b, #0 285 MOV x4,x23 //I Loads pu1_avail 286 287 MOV x7,x12 //row count, move ht_tmp to x7 288 LD1 {v16.16b},[x8] //I pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 289 LDRB w4,[x4,#2] //I pu1_avail[2] 290 291 LDRB w5,[x8,#16] //I pu1_src_cpy[src_strd + 16] 292 mov v18.b[0], w5 //I pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) 293 294 EXT v18.16b, v16.16b , v18.16b,#1 //I pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) 295 CMP x4,#0 //I 296 BNE SIGN_UP_CHANGE_DONE //I 297 298SIGN_UP_CHANGE: 299 SUB x2,x12,x7 //I ht_tmp - row 300 LDRB w11,[x0] //I pu1_src_cpy[0] 301 ADD x2,x14,x2 //I pu1_src_left_cpy[ht_tmp - row] 302 SUB x2,x2,#1 303 LDRB w5,[x2] //I load the value 304 ADD x2,x2,#1 305 SUBS x4,x11,x5 //I pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] 306 movn x20,#0 307 csel x4, x20, x4,LT //I 308 MOV x20,#1 309 csel x4, x20, x4,GT //I SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) 310 mov v17.b[0], w4 //I sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) 311 312SIGN_UP_CHANGE_DONE: 313 cmhi v3.16b, v5.16b , v18.16b //I vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) 314 ADD v24.16b, v0.16b , v17.16b //I edge_idx = vaddq_s8(const_2, sign_up) 315 316 cmhi v18.16b, v18.16b , v5.16b //I vcltq_u8(pu1_cur_row, pu1_next_row_tmp) 317 SUB v3.16b, v18.16b , v3.16b //I sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 318 319 ADD v24.16b, v24.16b , v3.16b //I edge_idx = vaddq_s8(edge_idx, sign_down) 320 TBL v18.16b, {v6.16b},v24.16b //I vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 321// TBL v19.8b, {v6.16b},v25.8b //I vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 322 323 AND v18.16b, v18.16b , v1.16b //I edge_idx = vandq_s8(edge_idx, au1_mask) 324 325 NEG v17.16b, v3.16b //I sign_up = vnegq_s8(sign_down) 326 TBL v3.16b, {v7.16b},v18.16b //I offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 327 EXT v17.16b, v17.16b , v17.16b,#15 //I sign_up = vextq_s8(sign_up, sign_up, 15) 328 329 Uxtl v20.8h, v5.8b //I pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 330// TBL v11.8b, {v7.16b},v19.8b //I offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 331 SADDW v20.8h, v20.8h , v3.8b //I pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 332 333 SMAX v20.8h, v20.8h , v2.8h //I pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 334 Uxtl2 v22.8h, v5.16b //I pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 335 336 UMIN v20.8h, v20.8h , v4.8h //I pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 337 mov v5.16b, v16.16b //I pu1_cur_row = pu1_next_row 338 339 SADDW2 v22.8h, v22.8h , v3.16b //I pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 340 xtn v20.8b, v20.8h //I vmovn_s16(pi2_tmp_cur_row.val[0]) 341 342 SMAX v22.8h, v22.8h , v2.8h //I pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 343 SUB x7,x7,#1 //I Decrement the ht_tmp loop count by 1 344 345 UMIN v22.8h, v22.8h , v4.8h //I pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 346 347 xtn2 v20.16b, v22.8h //I vmovn_s16(pi2_tmp_cur_row.val[1]) 348 349PU1_SRC_LOOP: 350 351 ST1 { v20.16b},[x0],x1 //I vst1q_u8(pu1_src_cpy, pu1_cur_row) 352 ADD x8,x0,x1 //II iteration *pu1_src + src_strd 353 354 LD1 {v16.16b},[x8] //II pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 355 ADD x11,x8,x1 //III iteration *pu1_src + src_strd 356 357 LDRB w5,[x8,#16] //II pu1_src_cpy[src_strd + 16] 358 LD1 {v30.16b},[x11] //III pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 359 LDRB w4,[x0] //II pu1_src_cpy[0] 360 361 LDRB w8,[x11,#16] //III pu1_src_cpy[src_strd + 16] 362 mov v28.b[0], w5 //II pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) 363 364 SUB x5,x12,x7 //II ht_tmp - row 365 EXT v22.16b, v16.16b , v28.16b,#1 //II pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) 366 ADD x5,x14,x5 //II pu1_src_left_cpy[ht_tmp - row] 367 368 SUB x5,x5,#1 369 LDRB w5,[x5] //II load the value 370 mov v18.b[0], w8 //III pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) 371 SUB x7,x7,#1 //II Decrement the ht_tmp loop count by 1 372 373 SUBS x4,x4,x5 //II pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] 374 EXT v18.16b, v30.16b , v18.16b,#1 //III pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) 375 LDRB w2,[x0,x1] //III pu1_src_cpy[0] 376 377 cmhi v24.16b, v5.16b , v22.16b //II vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) 378 SUB x5,x12,x7 //III ht_tmp - row 379 380 movn x20,#0 381 csel x4, x20, x4,LT //II 382 cmhi v22.16b, v22.16b , v5.16b //II vcltq_u8(pu1_cur_row, pu1_next_row_tmp) 383 ADD x5,x14,x5 //III pu1_src_left_cpy[ht_tmp - row] 384 385 MOV x20,#1 386 csel x4, x20, x4,GT //II SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) 387 SUB v24.16b, v22.16b , v24.16b //II sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 388 SUB x5,x5,#1 389 LDRB w5,[x5] //III load the value 390 391 SUBS x2,x2,x5 //III pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] 392 mov v17.b[0], w4 //II sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) 393 394 movn x20,#0 395 csel x2, x20, x2,LT //III 396 cmhi v3.16b, v16.16b , v18.16b //III vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) 397 MOV x20,#1 398 csel x2, x20, x2,GT //III SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) 399 400 ADD v22.16b, v0.16b , v17.16b //II edge_idx = vaddq_s8(const_2, sign_up) 401 ADD v22.16b, v22.16b , v24.16b //II edge_idx = vaddq_s8(edge_idx, sign_down) 402 403 cmhi v18.16b, v18.16b , v16.16b //III vcltq_u8(pu1_cur_row, pu1_next_row_tmp) 404 TBL v22.16b, {v6.16b},v22.16b //II vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 405 NEG v17.16b, v24.16b //II sign_up = vnegq_s8(sign_down) 406 407 SUB v3.16b, v18.16b , v3.16b //III sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 408// TBL v23.8b, {v6.16b},v23.8b //II vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 409 EXT v17.16b, v17.16b , v17.16b,#15 //II sign_up = vextq_s8(sign_up, sign_up, 15) 410 411 AND v22.16b, v22.16b , v1.16b //II edge_idx = vandq_s8(edge_idx, au1_mask) 412 mov v17.b[0], w2 //III sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) 413 414 ADD v18.16b, v0.16b , v17.16b //III edge_idx = vaddq_s8(const_2, sign_up) 415 TBL v24.16b, {v7.16b},v22.16b //II offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 416 ADD v18.16b, v18.16b , v3.16b //III edge_idx = vaddq_s8(edge_idx, sign_down) 417 418 Uxtl v26.8h, v5.8b //II pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 419 TBL v18.16b, {v6.16b},v18.16b //III vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 420 NEG v17.16b, v3.16b //III sign_up = vnegq_s8(sign_down) 421 422 SADDW v26.8h, v26.8h , v24.8b //II pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 423// TBL v19.8b, {v6.16b},v19.8b //III vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 424 EXT v17.16b, v17.16b , v17.16b,#15 //III sign_up = vextq_s8(sign_up, sign_up, 15) 425 426 AND v18.16b, v18.16b , v1.16b //III edge_idx = vandq_s8(edge_idx, au1_mask) 427 Uxtl v20.8h, v16.8b //III pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 428 429 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) 430 TBL v3.16b, {v7.16b},v18.16b //III offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 431 SADDW v20.8h, v20.8h , v3.8b //III pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 432 433 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)) 434// TBL v25.8b, {v7.16b},v23.8b //II offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 435 SMAX v20.8h, v20.8h , v2.8h //III pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 436 437 Uxtl2 v28.8h, v5.16b //II pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 438 UMIN v20.8h, v20.8h , v4.8h //III pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[0]), const_max_clip)) 439 440 SADDW2 v28.8h, v28.8h , v24.16b //II pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 441// TBL v11.8b, {v7.16b},v19.8b //III offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 442 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) 443 444 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)) 445 Uxtl2 v18.8h, v16.16b //III pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 446 447 mov v5.16b, v30.16b //III pu1_cur_row = pu1_next_row 448 xtn v26.8b, v26.8h //II vmovn_s16(pi2_tmp_cur_row.val[0]) 449 450 xtn2 v26.16b, v28.8h //II vmovn_s16(pi2_tmp_cur_row.val[1]) 451 SADDW2 v18.8h, v18.8h , v3.16b //III pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 452 453 SMAX v18.8h, v18.8h , v2.8h //III pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 454 xtn v20.8b, v20.8h //III vmovn_s16(pi2_tmp_cur_row.val[0]) 455 456 SUB x7,x7,#1 //III Decrement the ht_tmp loop count by 1 457 UMIN v18.8h, v18.8h , v4.8h //III pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vminq_u16(vreinterpretq_u16_s16(pi2_tmp_cur_row.val[1]), const_max_clip)) 458 CMP x7,#1 //III 459 460 ST1 { v26.16b},[x0],x1 //II vst1q_u8(pu1_src_cpy, pu1_cur_row) 461 xtn2 v20.16b, v18.8h //III vmovn_s16(pi2_tmp_cur_row.val[1]) 462 463 BGT PU1_SRC_LOOP //III If not equal jump to PU1_SRC_LOOP 464 BLT INNER_LOOP_DONE 465 466 ST1 { v20.16b},[x0],x1 //III vst1q_u8(pu1_src_cpy, pu1_cur_row) 467 ADD x8,x0,x1 //*pu1_src + src_strd 468 469 LDRB w2,[x0] //pu1_src_cpy[0] 470 LD1 {v16.16b},[x8] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 471 LDRB w5,[x8,#16] //pu1_src_cpy[src_strd + 16] 472 473 SUB x11,x12,x7 //ht_tmp - row 474 mov v18.b[0], w5 //pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) 475 ADD x11,x14,x11 //pu1_src_left_cpy[ht_tmp - row] 476 477 SUB x11,x11,#1 478 LDRB w5,[x11] //load the value 479 ADD x11,x11,#1 480 EXT v18.16b, v16.16b , v18.16b,#1 //pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) 481 SUBS x4,x2,x5 //pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] 482 483 cmhi v3.16b, v5.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) 484 movn x20,#0 485 csel x4, x20, x4,LT 486 487 MOV x20,#1 488 csel x4, x20, x4,GT //SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) 489 cmhi v18.16b, v18.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_next_row_tmp) 490 491 mov v17.b[0], w4 //sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) 492 SUB v3.16b, v18.16b , v3.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 493 494 ADD v18.16b, v0.16b , v17.16b //edge_idx = vaddq_s8(const_2, sign_up) 495 ADD v18.16b, v18.16b , v3.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 496 497 TBL v18.16b, {v6.16b},v18.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 498 NEG v17.16b, v3.16b //sign_up = vnegq_s8(sign_down) 499 500// TBL v19.8b, {v6.16b},v19.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 501 EXT v17.16b, v17.16b , v17.16b,#15 //sign_up = vextq_s8(sign_up, sign_up, 15) 502 503 AND v18.16b, v18.16b , v1.16b //edge_idx = vandq_s8(edge_idx, au1_mask) 504 505 TBL v3.16b, {v7.16b},v18.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 506 507 Uxtl v20.8h, v5.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 508// TBL v11.8b, {v7.16b},v19.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 509 SADDW v20.8h, v20.8h , v3.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 510 511 SMAX v20.8h, v20.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 512 Uxtl2 v5.8h, v5.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 513 514 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)) 515 SADDW2 v5.8h, v5.8h , v3.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 516 517 SMAX v5.8h, v5.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 518 xtn v20.8b, v20.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 519 520 UMIN v5.8h, v5.8h , 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)) 521 xtn2 v20.16b, v5.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) 522 523 524INNER_LOOP_DONE: 525 ADD x5,sp,#0x42 //*au1_src_left_tmp 526 ST1 { v20.16b},[x0],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 527 MOV x2,x21 //Loads *pu1_src_left 528 529 MOV x8,x17 //Loads ht 530 SUB x5,x5,#1 531 532 SUB x2,x2,#1 533SRC_LEFT_LOOP: 534 LDRB w7,[x5,#1]! //au1_src_left_tmp[row] 535 SUBS x8,x8,#1 536 STRB w7,[x2,#1]! //pu1_src_left[row] = au1_src_left_tmp[row] 537 BNE SRC_LEFT_LOOP 538 539 SUB x6,x6,#16 //Decrement the wd loop count by 16 540 CMP x6,#8 //Check whether residue remains 541 BLT RE_ASSINING_LOOP //Jump to re-assigning loop 542 MOV x7,x16 //Loads wd 543 MOV x0,x15 //Loads *pu1_src 544 SUB x7,x7,x6 545 ADD x0,x0,x7 546 BGT WIDTH_LOOP_16 //If not equal jump to width_loop 547 BEQ WIDTH_RESIDUE //If residue remains jump to residue loop 548 549 550WD_16_HT_4_LOOP: 551 MOV x7,x16 //Loads wd 552 MOV x5,x23 //Loads pu1_avail 553 CMP x6,x7 //col == wd 554 LDRb w20, [x5] //pu1_avail[0] 555 csel w8,w20,w8,EQ 556 MOV x20,#-1 557 csel x8, x20, x8,NE //au1_mask = vsetq_lane_s8(-1, au1_mask, 0) 558 559 mov v1.b[0], w8 //au1_mask = vsetq_lane_s8((-1||pu1_avail[0]), au1_mask, 0) 560 CMP x6,#16 //if(col == 16) 561 BNE SKIP_AU1_MASK_VAL_WD_16_HT_4 562 LDRB w8,[x5,#1] //pu1_avail[1] 563 mov v1.b[15], w8 //au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) 564 565SKIP_AU1_MASK_VAL_WD_16_HT_4: 566 LDRB w8,[x5,#2] //pu1_avail[2] 567 CMP x8,#0 568 569 SUB x20,x0,x1 //pu1_src - src_strd 570 csel x8, x20, x8,EQ 571 csel x8, x3, x8,NE 572 SUB x8,x8,#1 //pu1_src_top_cpy - 1 || pu1_src - src_strd - 1 573 574 MOV x7,x16 //Loads wd 575 LD1 {v3.16b},[x8] //pu1_top_row = vld1q_u8(pu1_src - src_strd - 1) || vld1q_u8(pu1_src_top_cpy - 1) 576 ADD x3,x3,#16 577 578 ADD x5,sp,#0x42 //*au1_src_left_tmp 579 LD1 {v5.16b},[x0] //pu1_cur_row = vld1q_u8(pu1_src) 580 MOV x4,x17 //Loads ht 581 582 SUB x7,x7,x6 //(wd - col) 583 cmhi v17.16b, v5.16b , v3.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 584 MOV x8,x19 //Loads *pu1_src 585 586 ADD x7,x7,#15 //15 + (wd - col) 587 cmhi v16.16b, v3.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 588 ADD x7,x8,x7 //pu1_src[0 * src_strd + 15 + (wd - col)] 589 590 SUB x5,x5,#1 591 SUB v17.16b, v16.16b , v17.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 592 593AU1_SRC_LEFT_LOOP_WD_16_HT_4: 594 LDRB w8,[x7] //load the value and increment by src_strd 595 ADD x7,x7,x1 596 SUBS x4,x4,#1 //decrement the loop count 597 STRB w8,[x5,#1]! //store it in the stack pointer 598 BNE AU1_SRC_LEFT_LOOP_WD_16_HT_4 599 600 movi v18.16b, #0 601 MOV x7,x12 //row count, move ht_tmp to x7 602 603PU1_SRC_LOOP_WD_16_HT_4: 604 ADD x8,x0,x1 //*pu1_src + src_strd 605 LD1 {v16.16b},[x8] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 606 607 LDRB w5,[x8,#16] //pu1_src_cpy[src_strd + 16] 608 mov v18.b[0], w5 //pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) 609 EXT v18.16b, v16.16b , v18.16b,#1 //pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) 610 611 CMP x7,x12 612 BLT SIGN_UP_CHANGE_WD_16_HT_4 613 MOV x5,x23 //Loads pu1_avail 614 LDRB w5,[x5,#2] //pu1_avail[2] 615 CMP x5,#0 616 BNE SIGN_UP_CHANGE_DONE_WD_16_HT_4 617 618SIGN_UP_CHANGE_WD_16_HT_4: 619 LDRB w8,[x0] //pu1_src_cpy[0] 620 SUB x5,x12,x7 //ht_tmp - row 621 ADD x5,x14,x5 //pu1_src_left_cpy[ht_tmp - row] 622 SUB x5,x5,#1 623 LDRB w5,[x5] //load the value 624 SUBS x8,x8,x5 //pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] 625 movn x20,#0 626 csel x8, x20, x8,LT 627 MOV x20,#1 628 csel x8, x20, x8,GT //SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) 629 mov v17.b[0], w8 //sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) 630 631SIGN_UP_CHANGE_DONE_WD_16_HT_4: 632 cmhi v20.16b, v5.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) 633 cmhi v22.16b, v18.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_next_row_tmp) 634 SUB v24.16b, v22.16b , v20.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 635 636 ADD v26.16b, v0.16b , v17.16b //edge_idx = vaddq_s8(const_2, sign_up) 637 ADD v26.16b, v26.16b , v24.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 638 TBL v26.16b, {v6.16b},v26.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 639// TBL v27.8b, {v6.16b},v27.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 640 641 AND v26.16b, v26.16b , v1.16b //edge_idx = vandq_s8(edge_idx, au1_mask) 642 643 NEG v17.16b, v24.16b //sign_up = vnegq_s8(sign_down) 644 EXT v17.16b, v17.16b , v17.16b,#15 //sign_up = vextq_s8(sign_up, sign_up, 15) 645 646 TBL v24.16b, {v7.16b},v26.16b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 647 Uxtl v28.8h, v5.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 648 SADDW v28.8h, v28.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 649 SMAX v28.8h, v28.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 650 UMIN v28.8h, v28.8h , 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)) 651 652// TBL v25.8b, {v7.16b},v27.8b //offset = vtbl1_s8(offset_tbl, vget_high_s8(edge_idx)) 653 Uxtl2 v30.8h, v5.16b //pi2_tmp_cur_row.val[1] = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(pu1_cur_row))) 654 SADDW2 v30.8h, v30.8h , v24.16b //pi2_tmp_cur_row.val[1] = vaddw_s8(pi2_tmp_cur_row.val[1], offset) 655 SMAX v30.8h, v30.8h , v2.8h //pi2_tmp_cur_row.val[1] = vmaxq_s16(pi2_tmp_cur_row.val[1], const_min_clip) 656 UMIN v30.8h, v30.8h , 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)) 657 658 xtn v28.8b, v28.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 659 xtn2 v28.16b, v30.8h //vmovn_s16(pi2_tmp_cur_row.val[1]) 660 661 ST1 { v28.16b},[x0],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 662 663 mov v5.16b, v16.16b //pu1_cur_row = pu1_next_row 664 SUBS x7,x7,#1 //Decrement the ht_tmp loop count by 1 665 BNE PU1_SRC_LOOP_WD_16_HT_4 //If not equal jump to PU1_SRC_LOOP_WD_16_HT_4 666 667 MOV x8,x17 //Loads ht 668 ADD x5,sp,#0x42 //*au1_src_left_tmp 669 MOV x2,x21 //Loads *pu1_src_left 670 SUB x5,x5,#1 671 SUB x2,x2,#1 672 673SRC_LEFT_LOOP_WD_16_HT_4: 674 LDRB w7,[x5,#1]! //au1_src_left_tmp[row] 675 STRB w7,[x2,#1]! //pu1_src_left[row] = au1_src_left_tmp[row] 676 SUBS x8,x8,#1 677 BNE SRC_LEFT_LOOP_WD_16_HT_4 678 679 SUBS x6,x6,#16 //Decrement the wd loop count by 16 680 BLE RE_ASSINING_LOOP //Jump to re-assigning loop 681 682 683WIDTH_RESIDUE: 684 MOV x7,x16 //Loads wd 685 MOV x5,x23 //Loads pu1_avail 686 CMP x6,x7 //wd_residue == wd 687 LDRb w20, [x5] //pu1_avail[0] 688 csel w8,w20,w8,EQ 689 690 MOV x20,#-1 691 csel x8, x20, x8,NE 692 mov v1.b[0], w8 //au1_mask = vsetq_lane_s8(-1, au1_mask, 0) 693 694 LDRB w8,[x5,#1] //pu1_avail[1] 695 mov v1.b[7], w8 //au1_mask = vsetq_lane_s8(pu1_avail[1], au1_mask, 15) 696 697PU1_AVAIL_2_RESIDUE: 698 LDRB w11,[x5,#2] //pu1_avail[2] 699 LD1 {v5.16b},[x0] //pu1_cur_row = vld1q_u8(pu1_src) 700 CMP x11,#0 701 702 SUB x20,x0,x1 //pu1_src - src_strd 703 csel x8, x20, x8,EQ 704 csel x8, x3, x8,NE 705 706 SUB x8,x8,#1 707 708 ADD x5,sp,#0x42 //*au1_src_left_tmp 709 LD1 {v3.16b},[x8],#16 //pu1_top_row = vld1q_u8(pu1_src_top_cpy - 1) 710 MOV x7,x16 //Loads wd 711 712 MOV x4,x17 //Loads ht 713 cmhi v17.16b, v5.16b , v3.16b //vcgtq_u8(pu1_cur_row, pu1_top_row) 714 SUB x7,x7,#1 //(wd - 1) 715 716 MOV x8,x19 //Loads *pu1_src 717 cmhi v16.16b, v3.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_top_row) 718 SUB x5,x5,#1 719 720 ADD x7,x8,x7 //pu1_src[0 * src_strd + (wd - 1)] 721 SUB v17.16b, v16.16b , v17.16b //sign_up = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 722 723 724AU1_SRC_LEFT_LOOP_RESIDUE: 725 LDRB w8,[x7] //load the value and increment by src_strd 726 ADD x7,x7,x1 727 SUBS x4,x4,#1 //decrement the loop count 728 STRB w8,[x5,#1]! //store it in the stack pointer 729 BNE AU1_SRC_LEFT_LOOP_RESIDUE 730 731 732 MOV x7,x12 //row count, move ht_tmp to x7 733 734PU1_SRC_LOOP_RESIDUE: 735 movi v18.16b, #0 736 ADD x8,x0,x1 //*pu1_src + src_strd 737 LD1 {v16.16b},[x8] //pu1_next_row = vld1q_u8(pu1_src_cpy + src_strd) 738 739 LDRB w8,[x8,#16] //pu1_src_cpy[src_strd + 16] 740 mov v18.b[0], w8 //pu1_next_row_tmp = vsetq_lane_u8(pu1_src_cpy[src_strd + 16], pu1_next_row_tmp, 0) 741 EXT v18.16b, v16.16b , v18.16b,#1 //pu1_next_row_tmp = vextq_u8(pu1_next_row, pu1_next_row_tmp, 1) 742 743 CMP x7,x12 744 BLT SIGN_UP_CHANGE_RESIDUE 745 MOV x5,x23 //Loads pu1_avail 746 LDRB w5,[x5,#2] //pu1_avail[2] 747 CMP x5,#0 748 BNE SIGN_UP_CHANGE_DONE_RESIDUE 749 750SIGN_UP_CHANGE_RESIDUE: 751 LDRB w8,[x0] //pu1_src_cpy[0] 752 SUB x5,x12,x7 //ht_tmp - row 753 754 ADD x5,x14,x5 755 SUB x5,x5,#1 756 LDRB w5,[x5] //load the value 757 SUBS x8,x8,x5 //pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row] 758 movn x20,#0 759 csel x8, x20, x8,LT 760 MOV x20,#1 761 csel x8, x20, x8,GT //SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]) 762 mov v17.b[0], w8 //sign_up = sign_up = vsetq_lane_s8(SIGN(pu1_src_cpy[0] - pu1_src_left_cpy[ht_tmp - 1 - row]), sign_up, 0) 763 764SIGN_UP_CHANGE_DONE_RESIDUE: 765 cmhi v20.16b, v5.16b , v18.16b //vcgtq_u8(pu1_cur_row, pu1_next_row_tmp) 766 cmhi v22.16b, v18.16b , v5.16b //vcltq_u8(pu1_cur_row, pu1_next_row_tmp) 767 SUB v24.16b, v22.16b , v20.16b //sign_down = vreinterpretq_s8_u8(vsubq_u8(cmp_lt, cmp_gt)) 768 769 ADD v26.16b, v0.16b , v17.16b //edge_idx = vaddq_s8(const_2, sign_up) 770 ADD v26.16b, v26.16b , v24.16b //edge_idx = vaddq_s8(edge_idx, sign_down) 771 TBL v26.16b, {v6.16b},v26.16b //vtbl1_s8(edge_idx_tbl, vget_low_s8(edge_idx)) 772// TBL v27.8b, {v6.16b},v27.8b //vtbl1_s8(edge_idx_tbl, vget_high_s8(edge_idx)) 773 774 AND v26.16b, v26.16b , v1.16b //edge_idx = vandq_s8(edge_idx, au1_mask) 775 776 NEG v17.16b, v24.16b //sign_up = vnegq_s8(sign_down) 777 EXT v17.16b, v17.16b , v17.16b,#15 //sign_up = vextq_s8(sign_up, sign_up, 15) 778 779 TBL v24.8b, {v7.16b},v26.8b //offset = vtbl1_s8(offset_tbl, vget_low_s8(edge_idx)) 780 Uxtl v28.8h, v5.8b //pi2_tmp_cur_row.val[0] = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(pu1_cur_row))) 781 SADDW v28.8h, v28.8h , v24.8b //pi2_tmp_cur_row.val[0] = vaddw_s8(pi2_tmp_cur_row.val[0], offset) 782 SMAX v28.8h, v28.8h , v2.8h //pi2_tmp_cur_row.val[0] = vmaxq_s16(pi2_tmp_cur_row.val[0], const_min_clip) 783 UMIN v28.8h, v28.8h , 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)) 784 785 xtn v30.8b, v28.8h //vmovn_s16(pi2_tmp_cur_row.val[0]) 786 787 ST1 {v30.8b},[x0],x1 //vst1q_u8(pu1_src_cpy, pu1_cur_row) 788 mov v5.16b, v16.16b //pu1_cur_row = pu1_next_row 789 SUBS x7,x7,#1 790 BNE PU1_SRC_LOOP_RESIDUE 791 792 MOV x8,x17 //Loads ht 793 ADD x5,sp,#0x42 //*au1_src_left_tmp 794 795 MOV x2,x21 //Loads *pu1_src_left 796 SUB x5,x5,#1 797 798 SUB x2,x2,#1 799 800SRC_LEFT_LOOP_RESIDUE: 801 LDRB w7,[x5,#1]! //au1_src_left_tmp[row] 802 SUBS x8,x8,#1 803 STRB w7,[x2,#1]! //pu1_src_left[row] = au1_src_left_tmp[row] 804 BNE SRC_LEFT_LOOP_RESIDUE 805 806 807RE_ASSINING_LOOP: 808 MOV x8,x17 //Loads ht 809 MOV x7,x16 //Loads wd 810 811 MOV x0,x19 //Loads *pu1_src 812 SUB x8,x8,#1 //ht - 1 813 814 madd x6, x8, x1, x7 //wd - 1 + (ht - 1) * src_strd 815 STRB w9,[x0] //pu1_src_org[0] = u1_pos_0_0_tmp 816 817 MOV x4,x24 //Loads pu1_src_top_left 818 ADD x6,x0,x6 //pu1_src[wd - 1 + (ht - 1) * src_strd] 819 820 ADD x12,sp,#0x02 821 SUB x6,x6,#1 822 STRB w10,[x6] //pu1_src_org[wd - 1 + (ht - 1) * src_strd] = u1_pos_wd_ht_tmp 823 ADD x6,x6,#1 824 825 LDRB w11,[sp] //load u1_src_top_left_tmp from stack pointer 826 MOV x3,x22 //Loads pu1_src_top 827 828 STRB w11,[x4] //*pu1_src_top_left = u1_src_top_left_tmp 829 830SRC_TOP_LOOP: 831 LD1 {v0.8b},[x12],#8 //pu1_src_top[col] = au1_src_top_tmp[col] 832 SUBS x7,x7,#8 //Decrement the width 833 ST1 {v0.8b},[x3],#8 //pu1_src_top[col] = au1_src_top_tmp[col] 834 BNE SRC_TOP_LOOP 835 836END_LOOPS: 837 ADD sp,sp,#0xA0 838 // LDMFD sp!,{x4-x12,x15} //Reload the registers from SP 839 ldp x23, x24,[sp],#16 840 ldp x21, x22,[sp],#16 841 ldp x19, x20,[sp],#16 842 843 ret 844 845 846 847